From c24a335aac2d52721788f99562a8b33d2f857c79 Mon Sep 17 00:00:00 2001 From: Matthew Wear Date: Thu, 18 Jan 2024 19:24:04 -0800 Subject: [PATCH] Introduce health check extension based on component status reporting --- .chloggen/healthcheck-v2.yaml | 27 + .github/CODEOWNERS | 1 + .github/ISSUE_TEMPLATE/bug_report.yaml | 1 + .github/ISSUE_TEMPLATE/feature_request.yaml | 1 + .github/ISSUE_TEMPLATE/other.yaml | 1 + cmd/otelcontribcol/builder-config.yaml | 2 + cmd/otelcontribcol/components.go | 2 + cmd/otelcontribcol/extensions_test.go | 9 + cmd/otelcontribcol/go.mod | 3 + extension/healthcheckextensionv2/Makefile | 1 + extension/healthcheckextensionv2/README.md | 337 +++++++ extension/healthcheckextensionv2/config.go | 27 + .../healthcheckextensionv2/config_test.go | 69 ++ extension/healthcheckextensionv2/extension.go | 169 ++++ .../healthcheckextensionv2/extension_test.go | 118 +++ extension/healthcheckextensionv2/factory.go | 57 ++ .../healthcheckextensionv2/factory_test.go | 53 ++ extension/healthcheckextensionv2/go.mod | 79 ++ extension/healthcheckextensionv2/go.sum | 639 +++++++++++++ .../internal/grpc/config.go | 11 + .../internal/grpc/grpc.go | 117 +++ .../internal/grpc/grpc_test.go | 437 +++++++++ .../internal/grpc/server.go | 84 ++ .../internal/http/config.go | 23 + .../internal/http/handlers.go | 98 ++ .../internal/http/serialization.go | 155 +++ .../internal/http/server.go | 103 ++ .../internal/http/server_test.go | 889 ++++++++++++++++++ .../internal/http/testdata/config.json | 1 + .../internal/http/testdata/config.yaml | 23 + .../internal/metadata/generated_status.go | 22 + .../internal/status/aggregator.go | 268 ++++++ .../internal/status/aggregator_test.go | 351 +++++++ .../internal/testhelpers/helpers.go | 75 ++ .../healthcheckextensionv2/metadata.yaml | 9 + reports/distributions/contrib.yaml | 1 + versions.yaml | 1 + 37 files changed, 4264 insertions(+) create mode 100755 .chloggen/healthcheck-v2.yaml create mode 100644 extension/healthcheckextensionv2/Makefile create mode 100644 extension/healthcheckextensionv2/README.md create mode 100644 extension/healthcheckextensionv2/config.go create mode 100644 extension/healthcheckextensionv2/config_test.go create mode 100644 extension/healthcheckextensionv2/extension.go create mode 100644 extension/healthcheckextensionv2/extension_test.go create mode 100644 extension/healthcheckextensionv2/factory.go create mode 100644 extension/healthcheckextensionv2/factory_test.go create mode 100644 extension/healthcheckextensionv2/go.mod create mode 100644 extension/healthcheckextensionv2/go.sum create mode 100644 extension/healthcheckextensionv2/internal/grpc/config.go create mode 100644 extension/healthcheckextensionv2/internal/grpc/grpc.go create mode 100644 extension/healthcheckextensionv2/internal/grpc/grpc_test.go create mode 100644 extension/healthcheckextensionv2/internal/grpc/server.go create mode 100644 extension/healthcheckextensionv2/internal/http/config.go create mode 100644 extension/healthcheckextensionv2/internal/http/handlers.go create mode 100644 extension/healthcheckextensionv2/internal/http/serialization.go create mode 100644 extension/healthcheckextensionv2/internal/http/server.go create mode 100644 extension/healthcheckextensionv2/internal/http/server_test.go create mode 100644 extension/healthcheckextensionv2/internal/http/testdata/config.json create mode 100644 extension/healthcheckextensionv2/internal/http/testdata/config.yaml create mode 100644 extension/healthcheckextensionv2/internal/metadata/generated_status.go create mode 100644 extension/healthcheckextensionv2/internal/status/aggregator.go create mode 100644 extension/healthcheckextensionv2/internal/status/aggregator_test.go create mode 100644 extension/healthcheckextensionv2/internal/testhelpers/helpers.go create mode 100644 extension/healthcheckextensionv2/metadata.yaml diff --git a/.chloggen/healthcheck-v2.yaml b/.chloggen/healthcheck-v2.yaml new file mode 100755 index 0000000000000..4fd7e5a381161 --- /dev/null +++ b/.chloggen/healthcheck-v2.yaml @@ -0,0 +1,27 @@ +# Use this changelog template to create an entry for release notes. + +# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix' +change_type: 'new_component' + +# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver) +component: healthcheckextensionv2 + +# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`). +note: Health Check Extension V2 is meant to be a replacement for the current Health Check Extension. It is based off of component status reporting and provides HTTP and gRPC services health check services. + +# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists. +issues: [26661] + +# (Optional) One or more lines of additional information to render under the primary note. +# These lines will be padded with 2 spaces and then inserted directly into the document. +# Use pipe (|) for multiline entries. +subtext: + +# If your change doesn't affect end users or the exported elements of any package, +# you should instead start your pull request title with [chore] or use the "Skip Changelog" label. +# Optional: The change log or logs in which this entry should be included. +# e.g. '[user]' or '[user, api]' +# Include 'user' if the change is relevant to end users. +# Include 'api' if there is a change to a library API. +# Default: '[user]' +change_logs: [] diff --git a/.github/CODEOWNERS b/.github/CODEOWNERS index 0d924990caa9a..334151c0e8ca1 100644 --- a/.github/CODEOWNERS +++ b/.github/CODEOWNERS @@ -93,6 +93,7 @@ extension/encoding/textencodingextension/ @open-telemetry/collect extension/encoding/zipkinencodingextension/ @open-telemetry/collector-contrib-approvers @MovieStoreGuy @dao-jun extension/headerssetterextension/ @open-telemetry/collector-contrib-approvers @jpkrohling extension/healthcheckextension/ @open-telemetry/collector-contrib-approvers @jpkrohling +extension/healthcheckextensionv2/ @open-telemetry/collector-contrib-approvers @mwear extension/httpforwarder/ @open-telemetry/collector-contrib-approvers @atoulme @rmfitzpatrick extension/jaegerremotesampling/ @open-telemetry/collector-contrib-approvers @yurishkuro @frzifus extension/oauth2clientauthextension/ @open-telemetry/collector-contrib-approvers @pavankrish123 @jpkrohling diff --git a/.github/ISSUE_TEMPLATE/bug_report.yaml b/.github/ISSUE_TEMPLATE/bug_report.yaml index 3c5571d62beb6..4e05df502d02e 100644 --- a/.github/ISSUE_TEMPLATE/bug_report.yaml +++ b/.github/ISSUE_TEMPLATE/bug_report.yaml @@ -92,6 +92,7 @@ body: - extension/encoding/zipkinencoding - extension/headerssetter - extension/healthcheck + - extension/healthcheckextensionv2 - extension/httpforwarder - extension/jaegerremotesampling - extension/oauth2clientauth diff --git a/.github/ISSUE_TEMPLATE/feature_request.yaml b/.github/ISSUE_TEMPLATE/feature_request.yaml index f6528a4d6ce58..d09467c5b5394 100644 --- a/.github/ISSUE_TEMPLATE/feature_request.yaml +++ b/.github/ISSUE_TEMPLATE/feature_request.yaml @@ -86,6 +86,7 @@ body: - extension/encoding/zipkinencoding - extension/headerssetter - extension/healthcheck + - extension/healthcheckextensionv2 - extension/httpforwarder - extension/jaegerremotesampling - extension/oauth2clientauth diff --git a/.github/ISSUE_TEMPLATE/other.yaml b/.github/ISSUE_TEMPLATE/other.yaml index 2513df46b356d..59741dff1c6ce 100644 --- a/.github/ISSUE_TEMPLATE/other.yaml +++ b/.github/ISSUE_TEMPLATE/other.yaml @@ -86,6 +86,7 @@ body: - extension/encoding/zipkinencoding - extension/headerssetter - extension/healthcheck + - extension/healthcheckextensionv2 - extension/httpforwarder - extension/jaegerremotesampling - extension/oauth2clientauth diff --git a/cmd/otelcontribcol/builder-config.yaml b/cmd/otelcontribcol/builder-config.yaml index 8b384b39af08b..b0bbe08e9469c 100644 --- a/cmd/otelcontribcol/builder-config.yaml +++ b/cmd/otelcontribcol/builder-config.yaml @@ -14,6 +14,7 @@ extensions: - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension v0.92.0 - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension v0.92.0 - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension v0.92.0 + - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2 v0.92.0 - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/httpforwarder v0.92.0 - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/jaegerremotesampling v0.92.0 - gomod: github.com/open-telemetry/opentelemetry-collector-contrib/extension/oauth2clientauthextension v0.92.0 @@ -266,6 +267,7 @@ replaces: - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/couchdbreceiver => ../../receiver/couchdbreceiver - github.com/open-telemetry/opentelemetry-collector-contrib/processor/resourcedetectionprocessor => ../../processor/resourcedetectionprocessor - github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension => ../../extension/healthcheckextension + - github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2 => ../../extension/healthcheckextensionv2 - github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension => ../../extension/headerssetterextension - github.com/open-telemetry/opentelemetry-collector-contrib/exporter/googlemanagedprometheusexporter => ../../exporter/googlemanagedprometheusexporter - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/aerospikereceiver => ../../receiver/aerospikereceiver diff --git a/cmd/otelcontribcol/components.go b/cmd/otelcontribcol/components.go index af00cae75ead2..88519420b1b39 100644 --- a/cmd/otelcontribcol/components.go +++ b/cmd/otelcontribcol/components.go @@ -82,6 +82,7 @@ import ( zipkinencodingextension "github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/zipkinencodingextension" headerssetterextension "github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension" healthcheckextension "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension" + healthcheckextensionv2 "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2" httpforwarder "github.com/open-telemetry/opentelemetry-collector-contrib/extension/httpforwarder" jaegerremotesampling "github.com/open-telemetry/opentelemetry-collector-contrib/extension/jaegerremotesampling" oauth2clientauthextension "github.com/open-telemetry/opentelemetry-collector-contrib/extension/oauth2clientauthextension" @@ -221,6 +222,7 @@ func components() (otelcol.Factories, error) { bearertokenauthextension.NewFactory(), headerssetterextension.NewFactory(), healthcheckextension.NewFactory(), + healthcheckextensionv2.NewFactory(), httpforwarder.NewFactory(), jaegerremotesampling.NewFactory(), oauth2clientauthextension.NewFactory(), diff --git a/cmd/otelcontribcol/extensions_test.go b/cmd/otelcontribcol/extensions_test.go index 40a30a1d073d7..9f3b597f57599 100644 --- a/cmd/otelcontribcol/extensions_test.go +++ b/cmd/otelcontribcol/extensions_test.go @@ -25,6 +25,7 @@ import ( "github.com/open-telemetry/opentelemetry-collector-contrib/extension/bearertokenauthextension" "github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension" "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension" + healthcheckextensionv2 "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2" "github.com/open-telemetry/opentelemetry-collector-contrib/extension/httpforwarder" "github.com/open-telemetry/opentelemetry-collector-contrib/extension/jaegerremotesampling" "github.com/open-telemetry/opentelemetry-collector-contrib/extension/oauth2clientauthextension" @@ -59,6 +60,14 @@ func TestDefaultExtensions(t *testing.T) { return cfg }, }, + { + extension: "healthcheckv2", + getConfigFn: func() component.Config { + cfg := extFactories["healthcheckv2"].CreateDefaultConfig().(*healthcheckextensionv2.Config) + cfg.HTTPSettings.Endpoint = endpoint + return cfg + }, + }, { extension: "pprof", getConfigFn: func() component.Config { diff --git a/cmd/otelcontribcol/go.mod b/cmd/otelcontribcol/go.mod index bb1e259b69940..efd4b6170ea7e 100644 --- a/cmd/otelcontribcol/go.mod +++ b/cmd/otelcontribcol/go.mod @@ -67,6 +67,7 @@ require ( github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/zipkinencodingextension v0.92.0 github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension v0.92.0 github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension v0.92.0 + github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2 v0.92.0 github.com/open-telemetry/opentelemetry-collector-contrib/extension/httpforwarder v0.92.0 github.com/open-telemetry/opentelemetry-collector-contrib/extension/jaegerremotesampling v0.92.0 github.com/open-telemetry/opentelemetry-collector-contrib/extension/oauth2clientauthextension v0.92.0 @@ -825,6 +826,8 @@ replace github.com/open-telemetry/opentelemetry-collector-contrib/processor/reso replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension => ../../extension/healthcheckextension +replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2 => ../../extension/healthcheckextensionv2 + replace github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension => ../../extension/headerssetterextension replace github.com/open-telemetry/opentelemetry-collector-contrib/exporter/googlemanagedprometheusexporter => ../../exporter/googlemanagedprometheusexporter diff --git a/extension/healthcheckextensionv2/Makefile b/extension/healthcheckextensionv2/Makefile new file mode 100644 index 0000000000000..ded7a36092dc3 --- /dev/null +++ b/extension/healthcheckextensionv2/Makefile @@ -0,0 +1 @@ +include ../../Makefile.Common diff --git a/extension/healthcheckextensionv2/README.md b/extension/healthcheckextensionv2/README.md new file mode 100644 index 0000000000000..792b9c63122f0 --- /dev/null +++ b/extension/healthcheckextensionv2/README.md @@ -0,0 +1,337 @@ +# Health Check Extension - V2 + + +| Status | | +| ------------- |-----------| +| Stability | [development] | +| Distributions | [contrib] | +| Issues | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aextension%2Fhealthcheckextensionv2%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aextension%2Fhealthcheckextensionv2) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aextension%2Fhealthcheckextensionv2%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aextension%2Fhealthcheckextensionv2) | +| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner) | [@mwear](https://www.github.com/mwear) | + +[development]: https://github.com/open-telemetry/opentelemetry-collector#development +[contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib + + +Health Check Extension - V2 provides HTTP and gRPC healthcheck services. The services can be used +separately or together depending on your needs. The source of health for both services is component +status reporting, a collector feature, that allows individual components to report their health via +`StatusEvent`s. The health check extension aggregates the component `StatusEvent`s into overall +collector health and pipeline health and exposes this data through its services. + +Below is a table enumerating component statuses and their meanings. These will be mapped to +appropriate status codes for the protocol. + +| Status | Meaning | +|-------------------|------------------------------------------------------------------------| +| Starting | The component is starting. | +| OK | The component is running without issue. | +| RecoverableError | The component has experienced a transient error and may recover. | +| PermanentError | The component has detected a condition at runtime that will need human intervention to fix. The collector will continue to run in a degraded mode. | +| FatalError | The collector has experienced a fatal runtime error and will shutdown. | +| Stopping | The component is in the process of shutting down. | +| Stopped | The component has completed shutdown. | + +Adoption of status reporting by collector components is still a work in progress. As more components +report status, this extension will become more accurate and useful. + +## Configuration + +Below is sample configuration for both the HTTP and gRPC services. + +```yaml +extensions: + healthcheckv2: + recovery_duration: 1m + http: + endpoint: "127.0.0.1:13133" + status: + detailed: true + enabled: true + path: "/health/status" + config: + enabled: true + path: "/health/config" + grpc: + endpoint: "127.0.0.1:13132" + transport: "tcp" +``` + +### Recovery Duration + +Recovery duration is a setting shared by both the HTTP and gRPC services. Component status reporting +has a `RecoverableError` status to indicate a likely transient failure. The recovery duration is the +time given for a `RecoverableError` to recover before being considered unhealthy by the extension. +During the recovery duration a `RecoverableError` will be considered healthy. If the error does not +recover after the recovery duration has elapsed, it will be considered unhealthy. + +## HTTP Service + +### Status Endpoint + +The HTTP service provides a status endpoint that can be probed for overall collector status and +per-pipeline status. The endpoint is located at `/status` by default, but can be configured using +the `http.status.path` setting. Requests to `/status` will return the overall collector status. To +probe pipeline status, pass the pipeline name as a query parameter, e.g. `/status?pipeline=traces`. +The HTTP status code returned maps to the overall collector or pipeline status, with the mapping +described below. + +#### Mapping of Component Status to HTTP Status + +Component statuses are aggregated into overall collector status and overall pipeline status. In each +case, you can consider the aggregated status to be the sum of its parts. The mapping from component +status to HTTP status is as follows: + +| Status | HTTP Status Code | +|-------------------|----------------------------------------------------------| +| Starting | 503 - Service Unavailable | +| OK | 200 - OK | +| RecoverableError | 200 when elapsed time < recovery duration; 500 otherwise | +| PermanentError | 500 - Internal Server Error | +| FatalError | 500 - Internal Server Error | +| Stopping | 503 - Service Unavailable | +| Stopped | 503 - Service Unavailable | + + +#### Response Body + +The response body contains either a detailed, or non-detailed view into collector or pipeline health +in JSON format. The level of detail applies to the contents of the response body and is controlled +by the `http.status.detailed` configuration option. + + +##### Collector Health + +The detailed response body for collector health will include the overall status for the +collector, the overall status for each pipeline in the collector, and the statuses for the +individual components in each pipeline. The non-detailed response will only contain the overall +collector health. + +###### Detailed Response Example + +Assuming the health check extension is configured with `http.status.endpoint` set to +`127.0.0.1:13133` a request to `http:127.0.0.1:13133/status` will have a +response body such as: + +```json +{ + "start_time": "2024-01-18T17:27:12.570394-08:00", + "healthy": true, + "status": "StatusRecoverableError", + "error": "rpc error: code = ResourceExhausted desc = resource exhausted", + "status_time": "2024-01-18T17:27:32.572301-08:00", + "components": { + "extensions": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.570428-08:00", + "components": { + "extension:healthcheckv2": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.570428-08:00" + } + } + }, + "pipeline:metrics/grpc": { + "healthy": true, + "status": "StatusRecoverableError", + "error": "rpc error: code = ResourceExhausted desc = resource exhausted", + "status_time": "2024-01-18T17:27:32.572301-08:00", + "components": { + "exporter:otlp/staging": { + "healthy": true, + "status": "StatusRecoverableError", + "error": "rpc error: code = ResourceExhausted desc = resource exhausted", + "status_time": "2024-01-18T17:27:32.572301-08:00" + }, + "processor:batch": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571132-08:00" + }, + "receiver:otlp": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571576-08:00" + } + } + }, + "pipeline:traces/http": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571625-08:00", + "components": { + "exporter:otlphttp/staging": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571615-08:00" + }, + "processor:batch": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571621-08:00" + }, + "receiver:otlp": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571625-08:00" + } + } + } + } +} +``` + +Note the following based on this response: +- The overall status is `StatusRecoverableError` but the status healthy because + the recovery duration has not yet passed. +- `pipeline:metrics/grpc` has a matching status, as does `exporter:otlp/staging`. This implicates + the exporter as the root cause for the pipeline and overall collector status. +- `pipeline:traces/http` is completely healthy. + +###### Non-detailed Response example + +If the same request is made to a collector with `http.status.detailed` to `false`, you will only get +the overall status. The pipeline and component level statuses will be omitted. + +``` +{ + "start_time": "2024-01-18T17:39:15.87324-08:00", + "healthy": true, + "status": "StatusRecoverableError", + "error": "rpc error: code = ResourceExhausted desc = resource exhausted", + "status_time": "2024-01-18T17:39:35.875024-08:00" +} +``` + +###### Pipeline Health + +The detailed response body for pipeline health is essentially a zoomed in version of the detailed +collector response. It contains the overall status for the pipeline and the statuses of the +individual components. The non-detailed response body contains only the overall status for the +pipeline. + +###### Detailed Response Example + +Assuming the health check extension is configured with `http.status.endpoint` set to +`127.0.0.1:13133` a request to `http:127.0.0.1:13133/status?pipeline=traces/http` will have a +response body such as: + + +```json +{ + "start_time": "2024-01-18T17:27:12.570394-08:00", + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571625-08:00", + "components": { + "exporter:otlphttp/staging": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571615-08:00" + }, + "processor:batch": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571621-08:00" + }, + "receiver:otlp": { + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:27:12.571625-08:00" + } + } +} +``` + +###### Non-detailed Response example + +If the same request is made to a collector with `http.status.detailed` to `false`, you will only get +the overall status. The component level statuses will be omitted. + +```json +{ + "start_time": "2024-01-18T17:39:15.87324-08:00", + "healthy": true, + "status": "StatusOK", + "status_time": "2024-01-18T17:39:15.874236-08:00" +} +``` + +### Collector Config Endpoint + +The HTTP service optionally exposes an endpoint that provides the collector configuration. Note, +the configuration returned is unfiltered and may contain sensitive information. As such, the +configuration is disabled by default. Enable it using the `http.config.enabled` setting. By +default the path will be `/config`, but it can be changed using the `http.config.path` setting. + +### gRPC Service + +The health check extension provides an implementation of the [grpc_health_v1 service]. The service +was chosen for compatibility with existing gRPC health checks, however, it does not provide the +additional detail available with the HTTP service. Additionally, the gRPC service has a less +nuanced view of the world with only two reportable statuses: `HealthCheckResponse_SERVING` and +`HealthCheckResponse_NOT_SERVING`. + +#### Mapping of ComponentStatus to HealthCheckResponse_ServingStatus + +The HTTP and gRCP services use the same method of component status aggregation to derive +overall collector health and pipeline health from individual status events. The component +statuses map to the following `HealthCheckResponse_ServingStatus`es. + +| Status | HealthCheckResponse_ServingStatus | +|-------------------|--------------------------------------------------------------------| +| Starting | HealthCheckResponse_NOT_SERVING | +| OK | HealthCheckResponse_SERVING | +| RecoverableError | HealthCheckResponse_SERVING when elapsed time < recovery duration; HealthCheckResponse_NOT_SERVING otherwise | +| PermanentError | HealthCheckResponse_NOT_SERVING | +| FatalError | HealthCheckResponse_NOT_SERVING | +| Stopping | HealthCheckResponse_NOT_SERVING | +| Stopped | HealthCheckResponse_NOT_SERVING | + + +#### HealthCheckRequest + +The gRPC service exposes two RPCs: `Check` and `Watch` (more about those below). Each takes a +`HealthCheckRequest` argument. The `HealthCheckRequest` message is defined as: + +```protobuf +message HealthCheckRequest { + string service = 1; +} +``` + +To query for overall collector health, use the empty string `""` as the `service` name. To query for +pipeline health, use the pipeline name as the `service`. + +#### Check RPC + +The `Check` RPC is defined as: + +```protobuf +rpc Check(HealthCheckRequest) returns (HealthCheckResponse) +``` + +If the service is unknown the RPC will return an error with status `NotFound`. Otherwise it will +return a `HealthCheckResponse` with the serving status as mapped in the table above. + +#### Watch Streaming RPC + +The `Watch` RPC is defined as: + +```protobuf +rpc Watch(HealthCheckRequest) returns (stream HealthCheckResponse) +``` + +The `Watch` RPC will initiate a stream for the given `service`. If the service is known at the time +the RPC is made, its current status will be sent and changes in status will be sent thereafter. If +the service is unknown, a response with a status of `HealthCheckResponse_SERVICE_UNKNOWN`` will be +sent. The stream will remain open, and if and when the service starts reporting, its status will +begin streaming. + +### Future + +There are plans to provide the ability to export status events as OTLP logs adhering to the event +semantic conventions. + +[grpc_health_v1 service]: https://github.com/grpc/grpc-proto/blob/master/grpc/health/v1/health.proto \ No newline at end of file diff --git a/extension/healthcheckextensionv2/config.go b/extension/healthcheckextensionv2/config.go new file mode 100644 index 0000000000000..5ecc5721f8777 --- /dev/null +++ b/extension/healthcheckextensionv2/config.go @@ -0,0 +1,27 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package healthcheckextensionv2 // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2" + +import ( + "errors" + "time" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/grpc" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" +) + +// Config has the configuration for the extension enabling the health check +// extension, used to report the health status of the service. +type Config struct { + RecoveryDuration time.Duration `mapstructure:"recovery_duration"` + GRPCSettings *grpc.Settings `mapstructure:"grpc"` + HTTPSettings *http.Settings `mapstructure:"http"` +} + +func (c *Config) Validate() error { + if c.GRPCSettings == nil && c.HTTPSettings == nil { + return errors.New("healthcheck extension must be configured for HTTP or gRPC") + } + return nil +} diff --git a/extension/healthcheckextensionv2/config_test.go b/extension/healthcheckextensionv2/config_test.go new file mode 100644 index 0000000000000..71516b9ad5301 --- /dev/null +++ b/extension/healthcheckextensionv2/config_test.go @@ -0,0 +1,69 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package healthcheckextensionv2 // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2" + +import ( + "testing" + + "github.com/stretchr/testify/assert" + "go.opentelemetry.io/collector/config/configgrpc" + "go.opentelemetry.io/collector/config/confighttp" + "go.opentelemetry.io/collector/config/confignet" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/grpc" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" +) + +func TestConfig(t *testing.T) { + grpcSettings := &grpc.Settings{ + GRPCServerSettings: configgrpc.GRPCServerSettings{ + NetAddr: confignet.NetAddr{ + Endpoint: "127.0.0.1:5000", + Transport: "tcp", + }, + }, + } + httpSettings := &http.Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: "127.0.0.1:5001", + }, + } + + for _, tc := range []struct { + name string + config *Config + valid bool + }{ + { + name: "GRPC Settings Only", + config: &Config{ + GRPCSettings: grpcSettings, + }, + valid: true, + }, + { + name: "HTTP Settings Only", + config: &Config{ + HTTPSettings: httpSettings, + }, + valid: true, + }, + { + name: "GRPC and HTTP Settings", + config: &Config{ + GRPCSettings: grpcSettings, + HTTPSettings: httpSettings, + }, + valid: true, + }, + { + name: "Neither GRPC nor HTTP Settings", + config: &Config{}, + valid: false, + }, + } { + err := tc.config.Validate() + assert.Equal(t, tc.valid, err == nil) + } +} diff --git a/extension/healthcheckextensionv2/extension.go b/extension/healthcheckextensionv2/extension.go new file mode 100644 index 0000000000000..a3b94313a5a98 --- /dev/null +++ b/extension/healthcheckextensionv2/extension.go @@ -0,0 +1,169 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package healthcheckextensionv2 // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2" + +import ( + "context" + + "go.opentelemetry.io/collector/component" + "go.opentelemetry.io/collector/confmap" + "go.opentelemetry.io/collector/extension" + "go.uber.org/multierr" + "go.uber.org/zap" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/grpc" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" +) + +type healthCheckExtension struct { + config Config + telemetry component.TelemetrySettings + aggregator *status.Aggregator + subcomponents []component.Component + eventCh chan *eventSourcePair + readyCh chan struct{} +} + +type eventSourcePair struct { + source *component.InstanceID + event *component.StatusEvent +} + +// Start implements the component.Component interface. +func (hc *healthCheckExtension) Start(ctx context.Context, host component.Host) error { + hc.telemetry.Logger.Info("Starting health check extension V2", zap.Any("config", hc.config)) + + for _, comp := range hc.subcomponents { + if err := comp.Start(ctx, host); err != nil { + return err + } + } + + return nil +} + +// Shutdown implements the component.Component interface. +func (hc *healthCheckExtension) Shutdown(ctx context.Context) error { + // Preemptively send the stopped event, so it can be exported before shutdown. + hc.telemetry.ReportStatus(component.NewStatusEvent(component.StatusStopped)) + + close(hc.eventCh) + hc.aggregator.Close() + + var err error + for _, comp := range hc.subcomponents { + err = multierr.Append(err, comp.Shutdown(ctx)) + } + + return err +} + +// ComponentStatusChanged implements the extension.StatusWatcher interface. +func (hc *healthCheckExtension) ComponentStatusChanged(source *component.InstanceID, event *component.StatusEvent) { + defer func() { + // There can be late arriving events after shutdown. We need to close + // the event channel so that this function doesn't block and that we + // free all resources, but attempting to write to a closed channel will + // panic; log and recover. + if r := recover(); r != nil { + hc.telemetry.Logger.Info("healthcheck: discarding event received after shutdown") + } + }() + hc.eventCh <- &eventSourcePair{source: source, event: event} +} + +// NotifyConfig implements the extension.ConfigWatcher interface. +func (hc *healthCheckExtension) NotifyConfig(ctx context.Context, conf *confmap.Conf) error { + var err error + for _, comp := range hc.subcomponents { + if cw, ok := comp.(extension.ConfigWatcher); ok { + err = multierr.Append(err, cw.NotifyConfig(ctx, conf)) + } + } + return err +} + +// Ready implements the extension.PipelineWatcher interface. +func (hc *healthCheckExtension) Ready() error { + close(hc.readyCh) + return nil +} + +// NotReady implements the extension.PipelineWatcher interface. +func (hc *healthCheckExtension) NotReady() error { + return nil +} + +func newExtension(config Config, set extension.CreateSettings) *healthCheckExtension { + var comps []component.Component + aggregator := status.NewAggregator() + + if config.GRPCSettings != nil { + srvGRPC := grpc.NewServer( + config.GRPCSettings, + set.TelemetrySettings, + config.RecoveryDuration, + aggregator, + ) + comps = append(comps, srvGRPC) + } + + if config.HTTPSettings != nil { + srvHTTP := http.NewServer(config.HTTPSettings, set.TelemetrySettings, config.RecoveryDuration, aggregator) + comps = append(comps, srvHTTP) + } + + hc := &healthCheckExtension{ + config: config, + subcomponents: comps, + telemetry: set.TelemetrySettings, + aggregator: aggregator, + eventCh: make(chan *eventSourcePair), + readyCh: make(chan struct{}), + } + + // Start processing events in the background so that our status watcher doesn't + // block others before the extension starts. + go hc.eventLoop() + + return hc +} + +func (hc *healthCheckExtension) eventLoop() { + // Record events with component.StatusStarting, but queue other events until + // PipelineWatcher.Ready is called. This prevents aggregate statuses from + // flapping between StatusStarting and StatusOK as components are started + // individually by the service. + var eventQueue []*eventSourcePair + for loop := true; loop; { + select { + case esp, ok := <-hc.eventCh: + if !ok { + loop = false + break + } + if esp.event.Status() != component.StatusStarting { + eventQueue = append(eventQueue, esp) + continue + } + hc.aggregator.RecordStatus(esp.source, esp.event) + case <-hc.readyCh: + for _, esp := range eventQueue { + hc.aggregator.RecordStatus(esp.source, esp.event) + } + eventQueue = nil + loop = false + } + } + + // After PipelineWatcher.Ready, record statuses as they are received. + for { + esp, ok := <-hc.eventCh + if !ok { + break + } + hc.aggregator.RecordStatus(esp.source, esp.event) + } +} diff --git a/extension/healthcheckextensionv2/extension_test.go b/extension/healthcheckextensionv2/extension_test.go new file mode 100644 index 0000000000000..1549ea1eaca5c --- /dev/null +++ b/extension/healthcheckextensionv2/extension_test.go @@ -0,0 +1,118 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package healthcheckextensionv2 + +import ( + "context" + "fmt" + "io" + "net/http" + "os" + "path/filepath" + "testing" + "time" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/collector/component" + "go.opentelemetry.io/collector/component/componenttest" + "go.opentelemetry.io/collector/confmap/confmaptest" + "go.opentelemetry.io/collector/extension/extensiontest" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/testhelpers" + "github.com/open-telemetry/opentelemetry-collector-contrib/internal/common/testutil" +) + +func TestComponentStatus(t *testing.T) { + cfg := createDefaultConfig().(*Config) + cfg.HTTPSettings.Endpoint = testutil.GetAvailableLocalAddress(t) + + ext := newExtension(*cfg, extensiontest.NewNopCreateSettings()) + + // Status before Start will be StatusNone + assert.Equal(t, ext.aggregator.CollectorStatus().Status(), component.StatusNone) + + require.NoError(t, ext.Start(context.Background(), componenttest.NewNopHost())) + + traces := testhelpers.NewPipelineMetadata("traces") + + // StatusStarting will be sent immediately. + for _, id := range traces.InstanceIDs() { + ext.ComponentStatusChanged(id, component.NewStatusEvent(component.StatusStarting)) + } + + // StatusOK will be queued until the PipelineWatcher Ready method is called. + for _, id := range traces.InstanceIDs() { + ext.ComponentStatusChanged(id, component.NewStatusEvent(component.StatusOK)) + } + + // Note the use of assert.Eventually here and throughout this test is because + // status events are processed asynchronously in the background. + assert.Eventually(t, func() bool { + return ext.aggregator.CollectorStatus().Status() == component.StatusStarting + }, time.Second, 10*time.Millisecond) + + require.NoError(t, ext.Ready()) + + assert.Eventually(t, func() bool { + return ext.aggregator.CollectorStatus().Status() == component.StatusOK + }, time.Second, 10*time.Millisecond) + + // StatusStopping will be sent immediately. + for _, id := range traces.InstanceIDs() { + ext.ComponentStatusChanged(id, component.NewStatusEvent(component.StatusStopping)) + } + + assert.Eventually(t, func() bool { + return ext.aggregator.CollectorStatus().Status() == component.StatusStopping + }, time.Second, 10*time.Millisecond) + + require.NoError(t, ext.NotReady()) + require.NoError(t, ext.Shutdown(context.Background())) + + // Events sent after shutdown will be discarded + for _, id := range traces.InstanceIDs() { + ext.ComponentStatusChanged(id, component.NewStatusEvent(component.StatusStopped)) + } + + assert.Equal(t, component.StatusStopping, ext.aggregator.CollectorStatus().Status()) +} + +func TestNotifyConfig(t *testing.T) { + confMap, err := confmaptest.LoadConf(filepath.Join("internal", "http", "testdata", "config.yaml")) + require.NoError(t, err) + confJSON, err := os.ReadFile(filepath.Clean(filepath.Join("internal", "http", "testdata", "config.json"))) + require.NoError(t, err) + + endpoint := testutil.GetAvailableLocalAddress(t) + + cfg := createDefaultConfig().(*Config) + cfg.HTTPSettings.Endpoint = endpoint + cfg.HTTPSettings.Config.Enabled = true + cfg.HTTPSettings.Config.Path = "/config" + + ext := newExtension(*cfg, extensiontest.NewNopCreateSettings()) + + require.NoError(t, ext.Start(context.Background(), componenttest.NewNopHost())) + t.Cleanup(func() { require.NoError(t, ext.Shutdown(context.Background())) }) + + client := &http.Client{} + url := fmt.Sprintf("http://%s/config", endpoint) + + var resp *http.Response + + resp, err = client.Get(url) + require.NoError(t, err) + assert.Equal(t, http.StatusServiceUnavailable, resp.StatusCode) + + require.NoError(t, ext.NotifyConfig(context.Background(), confMap)) + + resp, err = client.Get(url) + require.NoError(t, err) + assert.Equal(t, http.StatusOK, resp.StatusCode) + + body, err := io.ReadAll(resp.Body) + require.NoError(t, err) + assert.Equal(t, confJSON, body) +} diff --git a/extension/healthcheckextensionv2/factory.go b/extension/healthcheckextensionv2/factory.go new file mode 100644 index 0000000000000..e72dd796639ba --- /dev/null +++ b/extension/healthcheckextensionv2/factory.go @@ -0,0 +1,57 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +//go:generate mdatagen metadata.yaml + +package healthcheckextensionv2 // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2" + +import ( + "context" + "time" + + "go.opentelemetry.io/collector/component" + "go.opentelemetry.io/collector/config/confighttp" + "go.opentelemetry.io/collector/extension" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/metadata" +) + +const ( + // Use 0.0.0.0 to make the health check endpoint accessible + // in container orchestration environments like Kubernetes. + defaultEndpoint = "0.0.0.0:13133" +) + +// NewFactory creates a factory for HealthCheck extension. +func NewFactory() extension.Factory { + return extension.NewFactory( + metadata.Type, + createDefaultConfig, + createExtension, + metadata.ExtensionStability, + ) +} + +func createDefaultConfig() component.Config { + return &Config{ + RecoveryDuration: time.Minute, + HTTPSettings: &http.Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: defaultEndpoint, + }, + Status: http.StatusSettings{ + Detailed: true, + PathSettings: http.PathSettings{ + Enabled: true, + Path: "/", + }, + }, + }, + } +} + +func createExtension(_ context.Context, set extension.CreateSettings, cfg component.Config) (extension.Extension, error) { + config := cfg.(*Config) + return newExtension(*config, set), nil +} diff --git a/extension/healthcheckextensionv2/factory_test.go b/extension/healthcheckextensionv2/factory_test.go new file mode 100644 index 0000000000000..156e2568301db --- /dev/null +++ b/extension/healthcheckextensionv2/factory_test.go @@ -0,0 +1,53 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package healthcheckextensionv2 + +import ( + "context" + "testing" + "time" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/collector/component/componenttest" + "go.opentelemetry.io/collector/config/confighttp" + "go.opentelemetry.io/collector/extension/extensiontest" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" + "github.com/open-telemetry/opentelemetry-collector-contrib/internal/common/testutil" +) + +func TestFactory_CreateDefaultConfig(t *testing.T) { + cfg := createDefaultConfig() + assert.Equal(t, &Config{ + RecoveryDuration: time.Minute, + HTTPSettings: &http.Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: defaultEndpoint, + }, + Status: http.StatusSettings{ + Detailed: true, + PathSettings: http.PathSettings{ + Enabled: true, + Path: "/", + }, + }, + Config: http.PathSettings{}, + }, + }, cfg) + + assert.NoError(t, componenttest.CheckConfigStruct(cfg)) + ext, err := createExtension(context.Background(), extensiontest.NewNopCreateSettings(), cfg) + require.NoError(t, err) + require.NotNil(t, ext) +} + +func TestFactory_CreateExtension(t *testing.T) { + cfg := createDefaultConfig().(*Config) + cfg.HTTPSettings.Endpoint = testutil.GetAvailableLocalAddress(t) + + ext, err := createExtension(context.Background(), extensiontest.NewNopCreateSettings(), cfg) + require.NoError(t, err) + require.NotNil(t, ext) +} diff --git a/extension/healthcheckextensionv2/go.mod b/extension/healthcheckextensionv2/go.mod new file mode 100644 index 0000000000000..1d2429cec028c --- /dev/null +++ b/extension/healthcheckextensionv2/go.mod @@ -0,0 +1,79 @@ +module github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2 + +go 1.20 + +require ( + github.com/open-telemetry/opentelemetry-collector-contrib/internal/common v0.92.0 + github.com/stretchr/testify v1.8.4 + go.opentelemetry.io/collector/component v0.92.1-0.20240118172122-8131d31601b8 + go.opentelemetry.io/collector/config/configgrpc v0.92.1-0.20240118172122-8131d31601b8 + go.opentelemetry.io/collector/config/confighttp v0.92.1-0.20240118172122-8131d31601b8 + go.opentelemetry.io/collector/config/confignet v0.92.1-0.20240118172122-8131d31601b8 + go.opentelemetry.io/collector/confmap v0.92.1-0.20240118172122-8131d31601b8 + go.opentelemetry.io/collector/extension v0.92.1-0.20240118172122-8131d31601b8 + go.opentelemetry.io/otel/metric v1.22.0 + go.opentelemetry.io/otel/trace v1.22.0 + go.uber.org/multierr v1.11.0 + go.uber.org/zap v1.26.0 + google.golang.org/grpc v1.60.1 +) + +require ( + cloud.google.com/go/compute/metadata v0.2.4-0.20230617002413-005d2dfb6b68 // indirect + contrib.go.opencensus.io/exporter/prometheus v0.4.2 // indirect + github.com/beorn7/perks v1.0.1 // indirect + github.com/cespare/xxhash/v2 v2.2.0 // indirect + github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect + github.com/felixge/httpsnoop v1.0.4 // indirect + github.com/fsnotify/fsnotify v1.7.0 // indirect + github.com/go-kit/log v0.2.1 // indirect + github.com/go-logfmt/logfmt v0.5.1 // indirect + github.com/go-logr/logr v1.4.1 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/golang/protobuf v1.5.3 // indirect + github.com/golang/snappy v0.0.4 // indirect + github.com/hashicorp/go-version v1.6.0 // indirect + github.com/klauspost/compress v1.17.4 // indirect + github.com/knadh/koanf/maps v0.1.1 // indirect + github.com/knadh/koanf/providers/confmap v0.1.0 // indirect + github.com/knadh/koanf/v2 v2.0.1 // indirect + github.com/mitchellh/copystructure v1.2.0 // indirect + github.com/mitchellh/mapstructure v1.5.1-0.20231216201459-8508981c8b6c // indirect + github.com/mitchellh/reflectwalk v1.0.2 // indirect + github.com/mostynb/go-grpc-compression v1.2.2 // indirect + github.com/pmezard/go-difflib v1.0.0 // indirect + github.com/prometheus/client_golang v1.18.0 // indirect + github.com/prometheus/client_model v0.5.0 // indirect + github.com/prometheus/common v0.46.0 // indirect + github.com/prometheus/procfs v0.12.0 // indirect + github.com/prometheus/statsd_exporter v0.22.7 // indirect + github.com/rs/cors v1.10.1 // indirect + go.opencensus.io v0.24.0 // indirect + go.opentelemetry.io/collector v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/config/configauth v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/config/configcompression v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/config/configopaque v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/config/configtelemetry v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/config/configtls v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/config/internal v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/extension/auth v0.92.1-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/featuregate v1.0.2-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/collector/pdata v1.0.2-0.20240118172122-8131d31601b8 // indirect + go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.47.0 // indirect + go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.46.1 // indirect + go.opentelemetry.io/otel v1.22.0 // indirect + go.opentelemetry.io/otel/exporters/prometheus v0.44.1-0.20231201153405-6027c1ae76f2 // indirect + go.opentelemetry.io/otel/sdk v1.22.0 // indirect + go.opentelemetry.io/otel/sdk/metric v1.22.0 // indirect + golang.org/x/net v0.20.0 // indirect + golang.org/x/sys v0.16.0 // indirect + golang.org/x/text v0.14.0 // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20240108191215-35c7eff3a6b1 // indirect + google.golang.org/protobuf v1.32.0 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) + +replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/common => ../../internal/common diff --git a/extension/healthcheckextensionv2/go.sum b/extension/healthcheckextensionv2/go.sum new file mode 100644 index 0000000000000..a2d6d77b44701 --- /dev/null +++ b/extension/healthcheckextensionv2/go.sum @@ -0,0 +1,639 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= 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h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0= +rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA= diff --git a/extension/healthcheckextensionv2/internal/grpc/config.go b/extension/healthcheckextensionv2/internal/grpc/config.go new file mode 100644 index 0000000000000..aecc17cf28167 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/grpc/config.go @@ -0,0 +1,11 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package grpc // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/grpc" + +import "go.opentelemetry.io/collector/config/configgrpc" + +type Settings struct { + configgrpc.GRPCServerSettings `mapstructure:",squash"` + Debug bool `mapstructure:"debug"` +} diff --git a/extension/healthcheckextensionv2/internal/grpc/grpc.go b/extension/healthcheckextensionv2/internal/grpc/grpc.go new file mode 100644 index 0000000000000..9ea9b6ab7afb9 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/grpc/grpc.go @@ -0,0 +1,117 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package grpc // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/grpc" + +import ( + "context" + "time" + + "go.opentelemetry.io/collector/component" + "google.golang.org/grpc/codes" + healthpb "google.golang.org/grpc/health/grpc_health_v1" + "google.golang.org/grpc/status" +) + +func (s *Server) Check(_ context.Context, req *healthpb.HealthCheckRequest) (*healthpb.HealthCheckResponse, error) { + var err error + var ev *component.StatusEvent + + if req.Service == "" { + ev = s.aggregator.CollectorStatus() + } else { + ev, err = s.aggregator.PipelineStatus(req.Service) + } + + if err != nil { + return nil, status.Error(codes.NotFound, "unknown service") + } + + return &healthpb.HealthCheckResponse{ + Status: s.toServingStatus(ev), + }, nil +} + +func (s *Server) Watch(req *healthpb.HealthCheckRequest, stream healthpb.Health_WatchServer) error { + sub, err := s.aggregator.Subscribe(req.Service) + if err != nil { + return err + } + defer s.aggregator.Unsubscribe(sub) + + var lastServingStatus healthpb.HealthCheckResponse_ServingStatus = -1 + + failureTicker := time.NewTicker(s.recoveryDuration) + failureTicker.Stop() + + for { + select { + case ev, ok := <-sub: + if !ok { + return status.Error(codes.Canceled, "Server shutting down.") + } + + var sst healthpb.HealthCheckResponse_ServingStatus + + switch { + case ev == nil: + sst = healthpb.HealthCheckResponse_SERVICE_UNKNOWN + case ev.Status() == component.StatusRecoverableError: + failureTicker.Reset(s.recoveryDuration) + sst = lastServingStatus + if lastServingStatus == -1 { + sst = healthpb.HealthCheckResponse_SERVING + } + default: + failureTicker.Stop() + sst = statusToServingStatusMap[ev.Status()] + } + + if lastServingStatus == sst { + continue + } + + lastServingStatus = sst + + err := stream.Send(&healthpb.HealthCheckResponse{Status: sst}) + if err != nil { + return status.Error(codes.Canceled, "Stream has ended.") + } + case <-failureTicker.C: + failureTicker.Stop() + if lastServingStatus == healthpb.HealthCheckResponse_NOT_SERVING { + continue + } + lastServingStatus = healthpb.HealthCheckResponse_NOT_SERVING + err := stream.Send( + &healthpb.HealthCheckResponse{ + Status: healthpb.HealthCheckResponse_NOT_SERVING, + }, + ) + if err != nil { + return status.Error(codes.Canceled, "Stream has ended.") + } + case <-stream.Context().Done(): + return status.Error(codes.Canceled, "Stream has ended.") + } + } +} + +var statusToServingStatusMap = map[component.Status]healthpb.HealthCheckResponse_ServingStatus{ + component.StatusNone: healthpb.HealthCheckResponse_NOT_SERVING, + component.StatusStarting: healthpb.HealthCheckResponse_NOT_SERVING, + component.StatusOK: healthpb.HealthCheckResponse_SERVING, + component.StatusRecoverableError: healthpb.HealthCheckResponse_SERVING, + component.StatusPermanentError: healthpb.HealthCheckResponse_NOT_SERVING, + component.StatusFatalError: healthpb.HealthCheckResponse_NOT_SERVING, + component.StatusStopping: healthpb.HealthCheckResponse_NOT_SERVING, + component.StatusStopped: healthpb.HealthCheckResponse_NOT_SERVING, +} + +func (s *Server) toServingStatus(ev *component.StatusEvent) healthpb.HealthCheckResponse_ServingStatus { + if ev.Status() == component.StatusRecoverableError && + time.Now().Compare(ev.Timestamp().Add(s.recoveryDuration)) == 1 { + return healthpb.HealthCheckResponse_NOT_SERVING + } + return statusToServingStatusMap[ev.Status()] +} diff --git a/extension/healthcheckextensionv2/internal/grpc/grpc_test.go b/extension/healthcheckextensionv2/internal/grpc/grpc_test.go new file mode 100644 index 0000000000000..d41bb3879a4fc --- /dev/null +++ b/extension/healthcheckextensionv2/internal/grpc/grpc_test.go @@ -0,0 +1,437 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package grpc + +import ( + "context" + "testing" + "time" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/collector/component" + "go.opentelemetry.io/collector/component/componenttest" + "go.opentelemetry.io/collector/config/configgrpc" + "go.opentelemetry.io/collector/config/confignet" + "google.golang.org/grpc" + "google.golang.org/grpc/codes" + "google.golang.org/grpc/credentials/insecure" + healthpb "google.golang.org/grpc/health/grpc_health_v1" + grpcstatus "google.golang.org/grpc/status" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/testhelpers" + "github.com/open-telemetry/opentelemetry-collector-contrib/internal/common/testutil" +) + +func TestCheck(t *testing.T) { + addr := testutil.GetAvailableLocalAddress(t) + settings := &Settings{ + GRPCServerSettings: configgrpc.GRPCServerSettings{ + NetAddr: confignet.NetAddr{ + Endpoint: addr, + Transport: "tcp", + }, + }, + } + server := NewServer( + settings, + componenttest.NewNopTelemetrySettings(), + 10*time.Millisecond, + status.NewAggregator(), + ) + traces := testhelpers.NewPipelineMetadata("traces") + metrics := testhelpers.NewPipelineMetadata("metrics") + + require.NoError(t, server.Start(context.Background(), componenttest.NewNopHost())) + t.Cleanup(func() { require.NoError(t, server.Shutdown(context.Background())) }) + + cc, err := grpc.Dial( + addr, + grpc.WithTransportCredentials(insecure.NewCredentials()), + grpc.WithBlock(), + ) + require.NoError(t, err) + defer func() { + assert.NoError(t, cc.Close()) + }() + + client := healthpb.NewHealthClient(cc) + + // ts is a sequence of test steps + for _, ts := range []struct { + step func() + eventually bool + service string + expectedStatus healthpb.HealthCheckResponse_ServingStatus + expectedErr error + }{ + { + service: "", + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: traces.PipelineID.String(), + expectedErr: grpcstatus.Error(codes.NotFound, "unknown service"), + }, + { + service: metrics.PipelineID.String(), + expectedErr: grpcstatus.Error(codes.NotFound, "unknown service"), + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + traces.InstanceIDs(), + component.StatusStarting, + ) + testhelpers.SeedAggregator( + server.aggregator, + metrics.InstanceIDs(), + component.StatusStarting, + ) + }, + service: "", + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + traces.InstanceIDs(), + component.StatusOK, + ) + testhelpers.SeedAggregator( + server.aggregator, + metrics.InstanceIDs(), + component.StatusOK, + ) + }, + service: "", + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + step: func() { + // metrics and overall status will be NOT_SERVING + server.aggregator.RecordStatus( + metrics.ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + }, + service: "", + eventually: true, + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + step: func() { + // metrics and overall status will recover and resume SERVING + server.aggregator.RecordStatus( + metrics.ExporterID, + component.NewStatusEvent(component.StatusOK), + ) + }, + service: "", + eventually: true, + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + traces.InstanceIDs(), + component.StatusStopping, + ) + testhelpers.SeedAggregator( + server.aggregator, + metrics.InstanceIDs(), + component.StatusStopping, + ) + }, + service: "", + eventually: true, + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + traces.InstanceIDs(), + component.StatusStopped, + ) + testhelpers.SeedAggregator( + server.aggregator, + metrics.InstanceIDs(), + component.StatusStopped, + ) + }, + service: "", + eventually: true, + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + } { + if ts.step != nil { + ts.step() + } + + if ts.eventually { + assert.Eventually(t, func() bool { + resp, err := client.Check( + context.Background(), + &healthpb.HealthCheckRequest{Service: ts.service}, + ) + require.NoError(t, err) + return ts.expectedStatus == resp.Status + }, time.Second, 10*time.Millisecond) + } else { + resp, err := client.Check( + context.Background(), + &healthpb.HealthCheckRequest{Service: ts.service}, + ) + require.Equal(t, ts.expectedErr, err) + if ts.expectedErr != nil { + continue + } + assert.Equal(t, ts.expectedStatus, resp.Status) + } + } +} + +func TestWatch(t *testing.T) { + var err error + addr := testutil.GetAvailableLocalAddress(t) + settings := &Settings{ + GRPCServerSettings: configgrpc.GRPCServerSettings{ + NetAddr: confignet.NetAddr{ + Endpoint: addr, + Transport: "tcp", + }, + }, + } + server := NewServer( + settings, + componenttest.NewNopTelemetrySettings(), + 10*time.Millisecond, + status.NewAggregator(), + ) + traces := testhelpers.NewPipelineMetadata("traces") + metrics := testhelpers.NewPipelineMetadata("metrics") + + require.NoError(t, server.Start(context.Background(), componenttest.NewNopHost())) + t.Cleanup(func() { require.NoError(t, server.Shutdown(context.Background())) }) + + cc, err := grpc.Dial( + addr, + grpc.WithTransportCredentials(insecure.NewCredentials()), + grpc.WithBlock(), + ) + require.NoError(t, err) + defer func() { + assert.NoError(t, cc.Close()) + }() + + client := healthpb.NewHealthClient(cc) + watchers := make(map[string]healthpb.Health_WatchClient) + + // ts is a sequence of test steps + for _, ts := range []struct { + step func() + service string + expectedStatus healthpb.HealthCheckResponse_ServingStatus + }{ + { + service: "", + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVICE_UNKNOWN, + }, + { + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVICE_UNKNOWN, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + traces.InstanceIDs(), + component.StatusStarting, + ) + }, + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + metrics.InstanceIDs(), + component.StatusStarting, + ) + }, + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + traces.InstanceIDs(), + component.StatusOK, + ) + }, + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + metrics.InstanceIDs(), + component.StatusOK, + ) + }, + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + service: "", + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + step: func() { + // metrics and overall status will be NOT_SERVING + server.aggregator.RecordStatus( + metrics.ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + }, + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: "", + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + step: func() { + // metrics and overall status will recover and resume SERVING + server.aggregator.RecordStatus( + metrics.ExporterID, + component.NewStatusEvent(component.StatusOK), + ) + }, + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + service: "", + expectedStatus: healthpb.HealthCheckResponse_SERVING, + }, + { + step: func() { + // This will be the last status change for traces (stopping changes to NOT_SERVING) + // Stopped results in the same serving status, and repeat statuses are not streamed. + testhelpers.SeedAggregator( + server.aggregator, + traces.InstanceIDs(), + component.StatusStopping, + ) + }, + service: traces.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + service: "", + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + { + step: func() { + // This will be the last status change for metrics (stopping changes to NOT_SERVING) + // Stopped results in the same serving status, and repeat statuses are not streamed. + testhelpers.SeedAggregator( + server.aggregator, + metrics.InstanceIDs(), + component.StatusStopping, + ) + }, + service: metrics.PipelineID.String(), + expectedStatus: healthpb.HealthCheckResponse_NOT_SERVING, + }, + } { + + if ts.step != nil { + ts.step() + } + + watcher, ok := watchers[ts.service] + if !ok { + watcher, err = client.Watch( + context.Background(), + &healthpb.HealthCheckRequest{Service: ts.service}, + ) + require.NoError(t, err) + watchers[ts.service] = watcher + } + + var resp *healthpb.HealthCheckResponse + // Note Recv blocks until there is a new item in the stream + resp, err = watcher.Recv() + require.NoError(t, err) + assert.Equal(t, ts.expectedStatus, resp.Status) + } + + // closing the aggregator will gracefully terminate streams of status events + server.aggregator.Close() + + // Ensure watchers receive the cancelation when streams are closed by the server + for _, watcher := range watchers { + _, err = watcher.Recv() + assert.Equal(t, grpcstatus.Error(codes.Canceled, "Server shutting down."), err) + } +} diff --git a/extension/healthcheckextensionv2/internal/grpc/server.go b/extension/healthcheckextensionv2/internal/grpc/server.go new file mode 100644 index 0000000000000..4de2d39d209e2 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/grpc/server.go @@ -0,0 +1,84 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package grpc // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/grpc" + +import ( + "context" + "errors" + "time" + + "go.opentelemetry.io/collector/component" + "go.uber.org/zap" + "google.golang.org/grpc" + healthpb "google.golang.org/grpc/health/grpc_health_v1" + "google.golang.org/grpc/reflection" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" +) + +type Server struct { + healthpb.UnimplementedHealthServer + serverGRPC *grpc.Server + aggregator *status.Aggregator + settings *Settings + telemetry component.TelemetrySettings + recoveryDuration time.Duration + doneCh chan struct{} +} + +func NewServer( + settings *Settings, + telemetry component.TelemetrySettings, + failureDuration time.Duration, + aggregator *status.Aggregator, +) *Server { + return &Server{ + settings: settings, + telemetry: telemetry, + aggregator: aggregator, + recoveryDuration: failureDuration, + doneCh: make(chan struct{}), + } +} + +// Start implements the component.Component interface. +func (s *Server) Start(_ context.Context, host component.Host) error { + s.telemetry.Logger.Info( + "Starting GRPC healthcheck server", + zap.String("endpoint", s.settings.NetAddr.Endpoint), + ) + + var err error + s.serverGRPC, err = s.settings.ToServer(host, s.telemetry) + if err != nil { + return err + } + + healthpb.RegisterHealthServer(s.serverGRPC, s) + if s.settings.Debug { + reflection.Register(s.serverGRPC) + } + + ln, err := s.settings.ToListener() + + go func() { + defer close(s.doneCh) + + if err = s.serverGRPC.Serve(ln); err != nil && !errors.Is(err, grpc.ErrServerStopped) { + s.telemetry.ReportStatus(component.NewPermanentErrorEvent(err)) + } + }() + + return nil +} + +// Shutdown implements the component.Component interface. +func (s *Server) Shutdown(context.Context) error { + if s.serverGRPC == nil { + return nil + } + s.serverGRPC.GracefulStop() + <-s.doneCh + return nil +} diff --git a/extension/healthcheckextensionv2/internal/http/config.go b/extension/healthcheckextensionv2/internal/http/config.go new file mode 100644 index 0000000000000..3a7e94c386724 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/http/config.go @@ -0,0 +1,23 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package http // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" + +import "go.opentelemetry.io/collector/config/confighttp" + +type Settings struct { + confighttp.HTTPServerSettings `mapstructure:",squash"` + + Config PathSettings `mapstructure:"config"` + Status StatusSettings `mapstructure:"status"` +} + +type PathSettings struct { + Enabled bool `mapstructure:"enabled"` + Path string `mapstructure:"path"` +} + +type StatusSettings struct { + PathSettings `mapstructure:",squash"` + Detailed bool `mapstructure:"detailed"` +} diff --git a/extension/healthcheckextensionv2/internal/http/handlers.go b/extension/healthcheckextensionv2/internal/http/handlers.go new file mode 100644 index 0000000000000..77fec1084a7b1 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/http/handlers.go @@ -0,0 +1,98 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package http // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" + +import ( + "encoding/json" + "net/http" + + "go.opentelemetry.io/collector/component" +) + +func (s *Server) statusHandler() http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { + var err error + var sst *serializableStatus + pipeline := r.URL.Query().Get("pipeline") + + if pipeline == "" { + sst = s.collectorSerializableStatus() + } else { + sst, err = s.pipelineSerializableStatus(pipeline) + if err != nil { + w.WriteHeader(http.StatusNotFound) + return + } + } + + w.Header().Set("Content-Type", "application/json") + w.WriteHeader(s.toHTTPStatus(sst)) + + body, _ := json.Marshal(sst) + _, _ = w.Write(body) + }) +} + +func (s *Server) configHandler() http.Handler { + return http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) { + conf := s.colconf.Load() + + if conf == nil { + w.WriteHeader(http.StatusServiceUnavailable) + return + } + + w.Header().Set("Content-Type", "application/json") + w.WriteHeader(http.StatusOK) + _, _ = w.Write(conf.([]byte)) + }) +} + +func (s *Server) collectorSerializableStatus() *serializableStatus { + if s.settings.Status.Detailed { + details := s.aggregator.CollectorStatusDetailed() + return toCollectorSerializableStatus(details, s.startTimestamp, s.recoveryDuration) + } + + return toSerializableStatus( + s.aggregator.CollectorStatus(), + s.startTimestamp, + s.recoveryDuration, + ) +} + +func (s *Server) pipelineSerializableStatus(pipeline string) (*serializableStatus, error) { + if s.settings.Status.Detailed { + details, err := s.aggregator.PipelineStatusDetailed(pipeline) + if err != nil { + return nil, err + } + return toPipelineSerializableStatus(details, s.startTimestamp, s.recoveryDuration), nil + } + + ev, err := s.aggregator.PipelineStatus(pipeline) + if err != nil { + return nil, err + } + + return toSerializableStatus(ev, s.startTimestamp, s.recoveryDuration), nil +} + +var responseCodes = map[component.Status]int{ + component.StatusNone: http.StatusServiceUnavailable, + component.StatusStarting: http.StatusServiceUnavailable, + component.StatusOK: http.StatusOK, + component.StatusRecoverableError: http.StatusOK, + component.StatusPermanentError: http.StatusInternalServerError, + component.StatusFatalError: http.StatusInternalServerError, + component.StatusStopping: http.StatusServiceUnavailable, + component.StatusStopped: http.StatusServiceUnavailable, +} + +func (s *Server) toHTTPStatus(sst *serializableStatus) int { + if sst.Status() == component.StatusRecoverableError && !sst.Healthy { + return http.StatusInternalServerError + } + return responseCodes[sst.Status()] +} diff --git a/extension/healthcheckextensionv2/internal/http/serialization.go b/extension/healthcheckextensionv2/internal/http/serialization.go new file mode 100644 index 0000000000000..cdb87b863d554 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/http/serialization.go @@ -0,0 +1,155 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package http // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" + +import ( + "fmt" + "time" + + "go.opentelemetry.io/collector/component" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" +) + +type serializableStatus struct { + StartTimestamp *time.Time `json:"start_time,omitempty"` + *SerializableEvent + ComponentStatuses map[string]*serializableStatus `json:"components,omitempty"` +} + +// SerializableEvent is exported for json.Unmarshal +type SerializableEvent struct { + Healthy bool `json:"healthy"` + StatusString string `json:"status"` + Error string `json:"error,omitempty"` + Timestamp time.Time `json:"status_time"` +} + +var stringToStatusMap = map[string]component.Status{ + "StatusNone": component.StatusNone, + "StatusStarting": component.StatusStarting, + "StatusOK": component.StatusOK, + "StatusRecoverableError": component.StatusRecoverableError, + "StatusPermanentError": component.StatusPermanentError, + "StatusFatalError": component.StatusFatalError, + "StatusStopping": component.StatusStopping, + "StatusStopped": component.StatusStopped, +} + +func (ev *SerializableEvent) Status() component.Status { + if st, ok := stringToStatusMap[ev.StatusString]; ok { + return st + } + return component.StatusNone +} + +func toSerializableEvent( + ev *component.StatusEvent, + now time.Time, + recoveryDuration time.Duration, +) *SerializableEvent { + se := &SerializableEvent{ + Healthy: isHealthy(ev, now, recoveryDuration), + StatusString: ev.Status().String(), + Timestamp: ev.Timestamp(), + } + if ev.Err() != nil { + se.Error = ev.Err().Error() + } + return se +} + +var extsKey = "extensions" + +func toSerializableStatus( + ev *component.StatusEvent, + startTimestamp time.Time, + recoveryDuration time.Duration, +) *serializableStatus { + return &serializableStatus{ + StartTimestamp: &startTimestamp, + SerializableEvent: toSerializableEvent(ev, time.Now(), recoveryDuration), + } +} + +func toCollectorSerializableStatus( + details *status.CollectorStatusDetails, + startTimestamp time.Time, + recoveryDuration time.Duration, +) *serializableStatus { + now := time.Now() + s := &serializableStatus{ + StartTimestamp: &startTimestamp, + SerializableEvent: toSerializableEvent(details.OverallStatus, now, recoveryDuration), + ComponentStatuses: make(map[string]*serializableStatus), + } + + for compID, ev := range details.PipelineStatusMap { + key := compID.String() + if key != extsKey { + key = "pipeline:" + key + } + cs := &serializableStatus{ + SerializableEvent: toSerializableEvent(ev, now, recoveryDuration), + ComponentStatuses: make(map[string]*serializableStatus), + } + s.ComponentStatuses[key] = cs + for instance, ev := range details.ComponentStatusMap[compID] { + key := fmt.Sprintf("%s:%s", kindToString(instance.Kind), instance.ID) + cs.ComponentStatuses[key] = &serializableStatus{ + SerializableEvent: toSerializableEvent(ev, now, recoveryDuration), + } + } + } + + return s +} + +func toPipelineSerializableStatus( + details *status.PipelineStatusDetails, + startTimestamp time.Time, + recoveryDuration time.Duration, +) *serializableStatus { + now := time.Now() + s := &serializableStatus{ + StartTimestamp: &startTimestamp, + SerializableEvent: toSerializableEvent(details.OverallStatus, now, recoveryDuration), + ComponentStatuses: make(map[string]*serializableStatus), + } + + for instance, ev := range details.ComponentStatusMap { + key := fmt.Sprintf("%s:%s", kindToString(instance.Kind), instance.ID) + s.ComponentStatuses[key] = &serializableStatus{ + SerializableEvent: toSerializableEvent(ev, now, recoveryDuration), + } + } + + return s +} + +func isHealthy(ev *component.StatusEvent, now time.Time, recoveryDuration time.Duration) bool { + if ev.Status() == component.StatusRecoverableError && + now.Compare(ev.Timestamp().Add(recoveryDuration)) == -1 { + return true + } + + return !component.StatusIsError(ev.Status()) +} + +// TODO: implemnent Stringer on Kind in core +func kindToString(k component.Kind) string { + switch k { + case component.KindReceiver: + return "receiver" + case component.KindProcessor: + return "processor" + case component.KindExporter: + return "exporter" + case component.KindExtension: + return "extension" + case component.KindConnector: + return "connector" + } + return "" +} diff --git a/extension/healthcheckextensionv2/internal/http/server.go b/extension/healthcheckextensionv2/internal/http/server.go new file mode 100644 index 0000000000000..7868b60e2a18a --- /dev/null +++ b/extension/healthcheckextensionv2/internal/http/server.go @@ -0,0 +1,103 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package http // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/http" + +import ( + "context" + "encoding/json" + "errors" + "fmt" + "net/http" + "sync/atomic" + "time" + + "go.opentelemetry.io/collector/component" + "go.opentelemetry.io/collector/confmap" + "go.uber.org/zap" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" +) + +type Server struct { + telemetry component.TelemetrySettings + settings *Settings + recoveryDuration time.Duration + mux *http.ServeMux + serverHTTP *http.Server + colconf atomic.Value + aggregator *status.Aggregator + startTimestamp time.Time + done chan struct{} +} + +func NewServer( + settings *Settings, + telemetry component.TelemetrySettings, + recoveryDuration time.Duration, + aggregator *status.Aggregator, +) *Server { + srv := &Server{ + telemetry: telemetry, + settings: settings, + aggregator: aggregator, + recoveryDuration: recoveryDuration, + done: make(chan struct{}), + } + + srv.mux = http.NewServeMux() + if settings.Status.Enabled { + srv.mux.Handle(settings.Status.Path, srv.statusHandler()) + } + if settings.Config.Enabled { + srv.mux.Handle(settings.Config.Path, srv.configHandler()) + } + + return srv +} + +// Start implements the component.Component interface. +func (s *Server) Start(_ context.Context, host component.Host) error { + var err error + s.startTimestamp = time.Now() + + s.serverHTTP, err = s.settings.ToServer(host, s.telemetry, s.mux) + if err != nil { + return err + } + + ln, err := s.settings.ToListener() + if err != nil { + return fmt.Errorf("failed to bind to address %s: %w", s.settings.Endpoint, err) + } + + go func() { + defer close(s.done) + if err = s.serverHTTP.Serve(ln); !errors.Is(err, http.ErrServerClosed) && err != nil { + s.telemetry.ReportStatus(component.NewPermanentErrorEvent(err)) + } + }() + + return nil +} + +// Shutdown implements the component.Component interface. +func (s *Server) Shutdown(context.Context) error { + if s.serverHTTP == nil { + return nil + } + s.serverHTTP.Close() + <-s.done + return nil +} + +// NotifyConfig implements the extension.ConfigWatcher interface. +func (s *Server) NotifyConfig(_ context.Context, conf *confmap.Conf) error { + confBytes, err := json.Marshal(conf.ToStringMap()) + if err != nil { + s.telemetry.Logger.Warn("could not marshal config", zap.Error(err)) + return err + } + s.colconf.Store(confBytes) + return nil +} diff --git a/extension/healthcheckextensionv2/internal/http/server_test.go b/extension/healthcheckextensionv2/internal/http/server_test.go new file mode 100644 index 0000000000000..a68d1271dd149 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/http/server_test.go @@ -0,0 +1,889 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package http + +import ( + "context" + "encoding/json" + "fmt" + "io" + "net/http" + "os" + "path/filepath" + "testing" + "time" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/collector/component" + "go.opentelemetry.io/collector/component/componenttest" + "go.opentelemetry.io/collector/config/confighttp" + "go.opentelemetry.io/collector/confmap/confmaptest" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/testhelpers" + "github.com/open-telemetry/opentelemetry-collector-contrib/internal/common/testutil" +) + +type componentStatusExpectation struct { + healthy bool + status component.Status + err error + nestedStatus map[string]*componentStatusExpectation +} + +type teststep struct { + step func() + queryParams string + eventually bool + expectedStatusCode int + expectedComponentStatus *componentStatusExpectation +} + +func TestStatus(t *testing.T) { + // server and pipeline are reassigned before each test and are available for + // use in the teststesp + var server *Server + var pipelines map[string]*testhelpers.PipelineMetadata + + tests := []struct { + name string + settings *Settings + pipelines map[string]*testhelpers.PipelineMetadata + teststeps []teststep + }{ + { + name: "Collector Status", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{Enabled: false}, + Status: StatusSettings{ + Detailed: false, + PathSettings: PathSettings{ + Enabled: true, + Path: "/status", + }, + }, + }, + pipelines: testhelpers.NewPipelines("traces"), + teststeps: []teststep{ + { + step: func() { + testhelpers.SeedAggregator(server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusStarting, + ) + }, + expectedStatusCode: http.StatusServiceUnavailable, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusStarting, + }, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusOK, + ) + }, + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + }, + eventually: true, + expectedStatusCode: http.StatusInternalServerError, + expectedComponentStatus: &componentStatusExpectation{ + healthy: false, + status: component.StatusRecoverableError, + err: assert.AnError, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewStatusEvent(component.StatusOK), + ) + }, + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + }, + }, + }, + }, + { + name: "Collector Status - Detailed", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{Enabled: false}, + Status: StatusSettings{ + Detailed: true, + PathSettings: PathSettings{ + Enabled: true, + Path: "/status", + }, + }, + }, + pipelines: testhelpers.NewPipelines("traces"), + teststeps: []teststep{ + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusStarting, + ) + }, + expectedStatusCode: http.StatusServiceUnavailable, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusStarting, + nestedStatus: map[string]*componentStatusExpectation{ + "pipeline:traces": { + healthy: true, + status: component.StatusStarting, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusStarting, + }, + "processor:batch": { + healthy: true, + status: component.StatusStarting, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusStarting, + }, + }, + }, + }, + }, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusOK, + ) + }, + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "pipeline:traces": { + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusOK, + }, + }, + }, + }, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + }, + eventually: true, + expectedStatusCode: http.StatusInternalServerError, + expectedComponentStatus: &componentStatusExpectation{ + healthy: false, + status: component.StatusRecoverableError, + err: assert.AnError, + nestedStatus: map[string]*componentStatusExpectation{ + "pipeline:traces": { + healthy: false, + status: component.StatusRecoverableError, + err: assert.AnError, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: false, + status: component.StatusRecoverableError, + err: assert.AnError, + }, + }, + }, + }, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewStatusEvent(component.StatusOK), + ) + }, + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "pipeline:traces": { + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusOK, + }, + }, + }, + }, + }, + }, + }, + }, + { + name: "Pipeline Status", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{Enabled: false}, + Status: StatusSettings{ + Detailed: false, + PathSettings: PathSettings{ + Enabled: true, + Path: "/status", + }, + }, + }, + pipelines: testhelpers.NewPipelines("traces"), + teststeps: []teststep{ + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusStarting, + ) + }, + queryParams: "pipeline=traces", + expectedStatusCode: http.StatusServiceUnavailable, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusStarting, + }, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusOK, + ) + }, + queryParams: "pipeline=traces", + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + }, + queryParams: "pipeline=traces", + eventually: true, + expectedStatusCode: http.StatusInternalServerError, + expectedComponentStatus: &componentStatusExpectation{ + healthy: false, + status: component.StatusRecoverableError, + err: assert.AnError, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewStatusEvent(component.StatusOK), + ) + }, + queryParams: "pipeline=traces", + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + }, + }, + }, + }, + { + name: "Pipeline Status - Detailed", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{Enabled: false}, + Status: StatusSettings{ + Detailed: true, + PathSettings: PathSettings{ + Enabled: true, + Path: "/status", + }, + }, + }, + pipelines: testhelpers.NewPipelines("traces"), + teststeps: []teststep{ + { + step: func() { + testhelpers.SeedAggregator(server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusStarting, + ) + }, + queryParams: "pipeline=traces", + expectedStatusCode: http.StatusServiceUnavailable, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusStarting, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusStarting, + }, + "processor:batch": { + healthy: true, + status: component.StatusStarting, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusStarting, + }, + }, + }, + }, + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusOK, + ) + }, + queryParams: "pipeline=traces", + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusOK, + }, + }, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + }, + queryParams: "pipeline=traces", + eventually: true, + expectedStatusCode: http.StatusInternalServerError, + expectedComponentStatus: &componentStatusExpectation{ + healthy: false, + status: component.StatusRecoverableError, + err: assert.AnError, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: false, + status: component.StatusRecoverableError, + err: assert.AnError, + }, + }, + }, + }, + { + step: func() { + server.aggregator.RecordStatus( + pipelines["traces"].ExporterID, + component.NewStatusEvent(component.StatusOK), + ) + }, + queryParams: "pipeline=traces", + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusOK, + }, + }, + }, + }, + }, + }, + { + name: "Multiple Pipelines", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{Enabled: false}, + Status: StatusSettings{ + Detailed: true, + PathSettings: PathSettings{ + Enabled: true, + Path: "/status", + }, + }, + }, + pipelines: testhelpers.NewPipelines("traces", "metrics"), + teststeps: []teststep{ + { + step: func() { + // traces will be StatusOK + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusOK, + ) + testhelpers.SeedAggregator( + server.aggregator, + pipelines["metrics"].InstanceIDs(), + component.StatusOK, + ) + // metrics and overall status will be PermanentError + server.aggregator.RecordStatus( + pipelines["metrics"].ExporterID, + component.NewPermanentErrorEvent(assert.AnError), + ) + }, + expectedStatusCode: http.StatusInternalServerError, + expectedComponentStatus: &componentStatusExpectation{ + healthy: false, + status: component.StatusPermanentError, + err: assert.AnError, + nestedStatus: map[string]*componentStatusExpectation{ + "pipeline:traces": { + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusOK, + }, + }, + }, + "pipeline:metrics": { + healthy: false, + status: component.StatusPermanentError, + err: assert.AnError, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:metrics/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:metrics/out": { + healthy: false, + status: component.StatusPermanentError, + err: assert.AnError, + }, + }, + }, + }, + }, + }, + { + queryParams: "pipeline=traces", + expectedStatusCode: http.StatusOK, + expectedComponentStatus: &componentStatusExpectation{ + healthy: true, + status: component.StatusOK, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:traces/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:traces/out": { + healthy: true, + status: component.StatusOK, + }, + }, + }, + }, + { + queryParams: "pipeline=metrics", + expectedStatusCode: http.StatusInternalServerError, + expectedComponentStatus: &componentStatusExpectation{ + healthy: false, + status: component.StatusPermanentError, + err: assert.AnError, + nestedStatus: map[string]*componentStatusExpectation{ + "receiver:metrics/in": { + healthy: true, + status: component.StatusOK, + }, + "processor:batch": { + healthy: true, + status: component.StatusOK, + }, + "exporter:metrics/out": { + healthy: false, + status: component.StatusPermanentError, + err: assert.AnError, + }, + }, + }, + }, + }, + }, + { + name: "Pipeline Non-existent", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{Enabled: false}, + Status: StatusSettings{ + Detailed: false, + PathSettings: PathSettings{ + Enabled: true, + Path: "/status", + }, + }, + }, + pipelines: testhelpers.NewPipelines("traces"), + teststeps: []teststep{ + { + step: func() { + testhelpers.SeedAggregator( + server.aggregator, + pipelines["traces"].InstanceIDs(), + component.StatusOK, + ) + }, + queryParams: "pipeline=nonexistent", + expectedStatusCode: http.StatusNotFound, + }, + }, + }, + { + name: "Status Disabled", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{Enabled: false}, + Status: StatusSettings{ + PathSettings: PathSettings{ + Enabled: false, + }, + }, + }, + teststeps: []teststep{ + { + expectedStatusCode: http.StatusNotFound, + }, + }, + }, + } + + for _, tc := range tests { + t.Run(tc.name, func(t *testing.T) { + pipelines = tc.pipelines + server = NewServer( + tc.settings, + componenttest.NewNopTelemetrySettings(), + 20*time.Millisecond, + status.NewAggregator(), + ) + + require.NoError(t, server.Start(context.Background(), componenttest.NewNopHost())) + defer func() { require.NoError(t, server.Shutdown(context.Background())) }() + + client := &http.Client{} + url := fmt.Sprintf("http://%s%s", tc.settings.Endpoint, tc.settings.Status.Path) + + for _, ts := range tc.teststeps { + if ts.step != nil { + ts.step() + } + + stepURL := url + if ts.queryParams != "" { + stepURL = fmt.Sprintf("%s?%s", stepURL, ts.queryParams) + } + + var err error + var resp *http.Response + + if ts.eventually { + assert.Eventually(t, func() bool { + resp, err = client.Get(stepURL) + require.NoError(t, err) + return ts.expectedStatusCode == resp.StatusCode + }, time.Second, 10*time.Millisecond) + } else { + resp, err = client.Get(stepURL) + require.NoError(t, err) + assert.Equal(t, ts.expectedStatusCode, resp.StatusCode) + } + + if ts.expectedComponentStatus != nil { + body, err := io.ReadAll(resp.Body) + require.NoError(t, err) + + st := &serializableStatus{} + require.NoError(t, json.Unmarshal(body, st)) + + if tc.settings.Status.Detailed { + assertStatusDetailed(t, ts.expectedComponentStatus, st) + } else { + assertStatusSimple(t, ts.expectedComponentStatus, st) + } + } + } + }) + } +} + +func assertStatusDetailed( + t *testing.T, + expected *componentStatusExpectation, + actual *serializableStatus, +) { + assert.Equal(t, expected.healthy, actual.Healthy) + assert.Equal(t, expected.status, actual.Status()) + assert.Equal(t, !component.StatusIsError(expected.status), actual.Healthy) + if expected.err != nil { + assert.Equal(t, expected.err.Error(), actual.Error) + } + assertNestedStatus(t, expected.nestedStatus, actual.ComponentStatuses) +} + +func assertNestedStatus( + t *testing.T, + expected map[string]*componentStatusExpectation, + actual map[string]*serializableStatus, +) { + for k, expectation := range expected { + st, ok := actual[k] + require.True(t, ok, "status for key: %s not found", k) + assert.Equal(t, expectation.healthy, st.Healthy) + assert.Equal(t, expectation.status, st.Status()) + assert.Equal(t, !component.StatusIsError(expectation.status), st.Healthy) + if expectation.err != nil { + assert.Equal(t, expectation.err.Error(), st.Error) + } + assertNestedStatus(t, expectation.nestedStatus, st.ComponentStatuses) + } +} + +func assertStatusSimple( + t *testing.T, + expected *componentStatusExpectation, + actual *serializableStatus, +) { + assert.Equal(t, expected.status, actual.Status()) + assert.Equal(t, !component.StatusIsError(expected.status), actual.Healthy) + if expected.err != nil { + assert.Equal(t, expected.err.Error(), actual.Error) + } + assert.Nil(t, actual.ComponentStatuses) +} + +func TestConfig(t *testing.T) { + var server *Server + confMap, err := confmaptest.LoadConf(filepath.Join("testdata", "config.yaml")) + require.NoError(t, err) + confJSON, err := os.ReadFile(filepath.Clean(filepath.Join("testdata", "config.json"))) + require.NoError(t, err) + + for _, tc := range []struct { + name string + settings *Settings + setup func() + expectedStatusCode int + expectedBody []byte + }{ + { + name: "config not notified", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{ + Enabled: true, + Path: "/config", + }, + Status: StatusSettings{ + PathSettings: PathSettings{ + Enabled: false, + }, + }, + }, + expectedStatusCode: http.StatusServiceUnavailable, + expectedBody: []byte{}, + }, + { + name: "config notified", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{ + Enabled: true, + Path: "/config", + }, + Status: StatusSettings{ + PathSettings: PathSettings{ + Enabled: false, + }, + }, + }, + setup: func() { + require.NoError(t, server.NotifyConfig(context.Background(), confMap)) + }, + expectedStatusCode: http.StatusOK, + expectedBody: confJSON, + }, + { + name: "config disabled", + settings: &Settings{ + HTTPServerSettings: confighttp.HTTPServerSettings{ + Endpoint: testutil.GetAvailableLocalAddress(t), + }, + Config: PathSettings{ + Enabled: false, + }, + Status: StatusSettings{ + PathSettings: PathSettings{ + Enabled: false, + }, + }, + }, + expectedStatusCode: http.StatusNotFound, + expectedBody: []byte("404 page not found\n"), + }, + } { + t.Run(tc.name, func(t *testing.T) { + server = NewServer( + tc.settings, + componenttest.NewNopTelemetrySettings(), + 20*time.Millisecond, + status.NewAggregator(), + ) + + require.NoError(t, server.Start(context.Background(), componenttest.NewNopHost())) + defer func() { require.NoError(t, server.Shutdown(context.Background())) }() + + client := &http.Client{} + url := fmt.Sprintf("http://%s%s", tc.settings.Endpoint, tc.settings.Config.Path) + + if tc.setup != nil { + tc.setup() + } + + resp, err := client.Get(url) + require.NoError(t, err) + assert.Equal(t, tc.expectedStatusCode, resp.StatusCode) + + body, err := io.ReadAll(resp.Body) + require.NoError(t, err) + assert.Equal(t, tc.expectedBody, body) + }) + } + +} diff --git a/extension/healthcheckextensionv2/internal/http/testdata/config.json b/extension/healthcheckextensionv2/internal/http/testdata/config.json new file mode 100644 index 0000000000000..55dc317f7c4da --- /dev/null +++ b/extension/healthcheckextensionv2/internal/http/testdata/config.json @@ -0,0 +1 @@ +{"exporters":{"nop":null,"nop/myexporter":null},"extensions":{"nop":null,"nop/myextension":null},"processors":{"nop":null,"nop/myprocessor":null},"receivers":{"nop":null,"nop/myreceiver":null},"service":{"extensions":["nop"],"pipelines":{"traces":{"exporters":["nop"],"processors":["nop"],"receivers":["nop"]}}}} \ No newline at end of file diff --git a/extension/healthcheckextensionv2/internal/http/testdata/config.yaml b/extension/healthcheckextensionv2/internal/http/testdata/config.yaml new file mode 100644 index 0000000000000..38227d7a68bc4 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/http/testdata/config.yaml @@ -0,0 +1,23 @@ +receivers: + nop: + nop/myreceiver: + +processors: + nop: + nop/myprocessor: + +exporters: + nop: + nop/myexporter: + +extensions: + nop: + nop/myextension: + +service: + extensions: [nop] + pipelines: + traces: + receivers: [nop] + processors: [nop] + exporters: [nop] diff --git a/extension/healthcheckextensionv2/internal/metadata/generated_status.go b/extension/healthcheckextensionv2/internal/metadata/generated_status.go new file mode 100644 index 0000000000000..0a5dc799fff52 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/metadata/generated_status.go @@ -0,0 +1,22 @@ +// Code generated by mdatagen. DO NOT EDIT. + +package metadata + +import ( + "go.opentelemetry.io/collector/component" + "go.opentelemetry.io/otel/metric" + "go.opentelemetry.io/otel/trace" +) + +const ( + Type = "healthcheckv2" + ExtensionStability = component.StabilityLevelDevelopment +) + +func Meter(settings component.TelemetrySettings) metric.Meter { + return settings.MeterProvider.Meter("otelcol") +} + +func Tracer(settings component.TelemetrySettings) trace.Tracer { + return settings.TracerProvider.Tracer("otelcol") +} diff --git a/extension/healthcheckextensionv2/internal/status/aggregator.go b/extension/healthcheckextensionv2/internal/status/aggregator.go new file mode 100644 index 0000000000000..d44be13524102 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/status/aggregator.go @@ -0,0 +1,268 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package status // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" + +import ( + "fmt" + "sync" + + "go.opentelemetry.io/collector/component" +) + +// CollectorStatusDetails holds a snapshot of the current overall collector status, the overall +// pipeline statuses, and the statuses of the individual components within the pipelines. +type CollectorStatusDetails struct { + OverallStatus *component.StatusEvent + PipelineStatusMap map[component.ID]*component.StatusEvent + ComponentStatusMap map[component.ID]map[*component.InstanceID]*component.StatusEvent +} + +// PipelineStatusDetails holds a snapshot of the current overall pipeline status, and the statuses +// of the individual components in the pipeline. +type PipelineStatusDetails struct { + OverallStatus *component.StatusEvent + ComponentStatusMap map[*component.InstanceID]*component.StatusEvent +} + +type componentIDCache struct { + mu sync.RWMutex + componentIDMap map[string]component.ID +} + +func (c *componentIDCache) lookup(name string) (component.ID, error) { + compID, ok := func() (component.ID, bool) { + c.mu.RLock() + defer c.mu.RUnlock() + id, ok := c.componentIDMap[name] + return id, ok + }() + + if ok { + return compID, nil + } + + err := compID.UnmarshalText([]byte(name)) + if err == nil { + c.mu.Lock() + c.componentIDMap[name] = compID + c.mu.Unlock() + } + + return compID, err +} + +// Extensions are treated as a pseudo pipeline and extsID is used as a map key +var extsID = component.NewID("extensions") +var extsIDMap = map[component.ID]struct{}{extsID: {}} + +// The empty string is an alias for the overall collector health when subscribing to +// status events. +const emptyStream = "" + +// CollectorID is used as a key in the subscriptions map +var collectorID = component.NewID("__collector__") + +// Aggregator records individual status events for components and aggregates statuses for the +// pipelines they belong to and the collector overall. +type Aggregator struct { + mu sync.RWMutex + componentIDCache *componentIDCache + overallStatus *component.StatusEvent + pipelineStatusMap map[component.ID]*component.StatusEvent + componentStatusMap map[component.ID]map[*component.InstanceID]*component.StatusEvent + subscriptions map[component.ID][]chan *component.StatusEvent +} + +// NewAggregator returns a *status.Aggregator. +func NewAggregator() *Aggregator { + return &Aggregator{ + overallStatus: &component.StatusEvent{}, + pipelineStatusMap: make(map[component.ID]*component.StatusEvent), + componentStatusMap: make(map[component.ID]map[*component.InstanceID]*component.StatusEvent), + componentIDCache: &componentIDCache{ + componentIDMap: make(map[string]component.ID), + }, + subscriptions: make(map[component.ID][]chan *component.StatusEvent), + } +} + +// CollectorStatus returns the overall status for the collector. +func (a *Aggregator) CollectorStatus() *component.StatusEvent { + a.mu.RLock() + defer a.mu.RUnlock() + + return a.overallStatus +} + +// CollectorStatusDetailed returns a snapshot of the current overall collector status, pipeline +// statuses, and individual component statuses. +func (a *Aggregator) CollectorStatusDetailed() *CollectorStatusDetails { + a.mu.RLock() + defer a.mu.RUnlock() + + details := &CollectorStatusDetails{ + OverallStatus: a.overallStatus, + PipelineStatusMap: make(map[component.ID]*component.StatusEvent), + ComponentStatusMap: make(map[component.ID]map[*component.InstanceID]*component.StatusEvent), + } + + for compID, ev := range a.pipelineStatusMap { + details.PipelineStatusMap[compID] = ev + } + + for compID, eventMap := range a.componentStatusMap { + details.ComponentStatusMap[compID] = make(map[*component.InstanceID]*component.StatusEvent) + for instID, ev := range eventMap { + details.ComponentStatusMap[compID][instID] = ev + } + } + + return details +} + +// PipelineStatus returns the current overall pipeline status. An error will be returned if the +// pipeline is not found, or if there was an error marshaling the name to a component.ID. +func (a *Aggregator) PipelineStatus(name string) (*component.StatusEvent, error) { + compID, err := a.componentIDCache.lookup(name) + if err != nil { + return nil, err + } + + a.mu.RLock() + defer a.mu.RUnlock() + + ev, ok := a.pipelineStatusMap[compID] + if !ok { + return nil, fmt.Errorf("pipeline not found: %s", name) + } + + return ev, nil +} + +// PipelineStatusDetailed returns the current overall pipeline status and the invidiual statuses of +// the components within the pipeline. An error will be returned if the pipeline is not found, or if +// there was an error marshaling the name to a component.ID. +func (a *Aggregator) PipelineStatusDetailed(name string) (*PipelineStatusDetails, error) { + compID, err := a.componentIDCache.lookup(name) + if err != nil { + return nil, err + } + + a.mu.RLock() + defer a.mu.RUnlock() + + ev, ok := a.pipelineStatusMap[compID] + if !ok { + return nil, fmt.Errorf("pipeline not found: %s", name) + } + + details := &PipelineStatusDetails{ + OverallStatus: ev, + ComponentStatusMap: make(map[*component.InstanceID]*component.StatusEvent), + } + + for instanceID, ev := range a.componentStatusMap[compID] { + details.ComponentStatusMap[instanceID] = ev + } + + return details, nil +} + +// RecordStatus stores and aggregates a StatusEvent for the given component instance. +func (a *Aggregator) RecordStatus(source *component.InstanceID, event *component.StatusEvent) { + compIDs := source.PipelineIDs + // extensions are treated as a pseudo-pipeline + if source.Kind == component.KindExtension { + compIDs = extsIDMap + } + + a.mu.Lock() + defer a.mu.Unlock() + + for compID := range compIDs { + var compStatuses map[*component.InstanceID]*component.StatusEvent + compStatuses, ok := a.componentStatusMap[compID] + if !ok { + compStatuses = make(map[*component.InstanceID]*component.StatusEvent) + } + compStatuses[source] = event + a.componentStatusMap[compID] = compStatuses + + pipelineStatus := component.AggregateStatusEvent(compStatuses) + a.pipelineStatusMap[compID] = pipelineStatus + a.notifySubscribers(compID, pipelineStatus) + } + + overallStatus := component.AggregateStatusEvent(a.pipelineStatusMap) + a.overallStatus = overallStatus + a.notifySubscribers(collectorID, overallStatus) +} + +// Subscribe allows you to subscribe to a stream of events for a pipline by passing in the +// pipeline name. The empty string can be used as an alias to subscribe to the collector health +// overall. It is possible to subscribe to a pipeline that has not yet reported. An initial nil +// will be sent on the channel and events will start streaming if and when it starts reporting. +func (a *Aggregator) Subscribe(name string) (<-chan *component.StatusEvent, error) { + a.mu.Lock() + defer a.mu.Unlock() + + var compID component.ID + var ev *component.StatusEvent + + if name == emptyStream { + compID = collectorID + ev = a.overallStatus + } else { + var err error + compID, err = a.componentIDCache.lookup(name) + if err != nil { + return nil, err + } + ev = a.pipelineStatusMap[compID] + } + + eventCh := make(chan *component.StatusEvent, 1) + a.subscriptions[compID] = append(a.subscriptions[compID], eventCh) + eventCh <- ev + + return eventCh, nil +} + +// Unbsubscribe removes a stream from further status updates. +func (a *Aggregator) Unsubscribe(eventCh <-chan *component.StatusEvent) { + a.mu.Lock() + defer a.mu.Unlock() + + for compID, subs := range a.subscriptions { + for i, sub := range subs { + if sub == eventCh { + a.subscriptions[compID] = append(subs[:i], subs[i+1:]...) + return + } + } + } +} + +// Close terminates all existing subscriptions. +func (a *Aggregator) Close() { + a.mu.Lock() + defer a.mu.Unlock() + + for _, subs := range a.subscriptions { + for _, sub := range subs { + close(sub) + } + } +} + +func (a *Aggregator) notifySubscribers(compID component.ID, event *component.StatusEvent) { + for _, sub := range a.subscriptions[compID] { + // clear unread events + select { + case <-sub: + default: + } + sub <- event + } +} diff --git a/extension/healthcheckextensionv2/internal/status/aggregator_test.go b/extension/healthcheckextensionv2/internal/status/aggregator_test.go new file mode 100644 index 0000000000000..a105f2e9c2235 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/status/aggregator_test.go @@ -0,0 +1,351 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package status_test + +import ( + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/collector/component" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/testhelpers" +) + +func TestCollectorStatus(t *testing.T) { + agg := status.NewAggregator() + traces := testhelpers.NewPipelineMetadata("traces") + + t.Run("zero value", func(t *testing.T) { + assert.Equal(t, component.StatusNone, agg.CollectorStatus().Status()) + }) + + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusOK) + + t.Run("pipeline statuses all successful", func(t *testing.T) { + assert.Equal(t, component.StatusOK, agg.CollectorStatus().Status()) + }) + + agg.RecordStatus( + traces.ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + + t.Run("pipeline with recoverable error", func(t *testing.T) { + assertErrorEventsMatch(t, + component.StatusRecoverableError, + assert.AnError, + agg.CollectorStatus(), + ) + }) + + agg.RecordStatus( + traces.ExporterID, + component.NewPermanentErrorEvent(assert.AnError), + ) + + t.Run("pipeline with permanent error", func(t *testing.T) { + assertErrorEventsMatch(t, + component.StatusPermanentError, + assert.AnError, + agg.CollectorStatus(), + ) + }) +} + +func TestCollectorStatusDetailed(t *testing.T) { + agg := status.NewAggregator() + traces := testhelpers.NewPipelineMetadata("traces") + + t.Run("zero value", func(t *testing.T) { + dst := agg.CollectorStatusDetailed() + assertEventsMatch(t, component.StatusNone, agg.CollectorStatus(), dst.OverallStatus) + assert.Empty(t, dst.PipelineStatusMap) + assert.Empty(t, dst.ComponentStatusMap) + }) + + // Seed aggregator with successful statuses for pipeline. + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusOK) + + t.Run("pipeline statuses all successful", func(t *testing.T) { + dst := agg.CollectorStatusDetailed() + + // CollectorStatus, OverAllStatus, and PipelineStatus match. + assertEventsMatch(t, + component.StatusOK, + agg.CollectorStatus(), + dst.OverallStatus, + dst.PipelineStatusMap[traces.PipelineID], + ) + + // Component statuses match + assertEventsMatch(t, + component.StatusOK, + collectEvents(dst.ComponentStatusMap[traces.PipelineID], traces.InstanceIDs()...)..., + ) + }) + + // Record an error in the traces exporter + agg.RecordStatus( + traces.ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + + t.Run("pipeline with exporter error", func(t *testing.T) { + dst := agg.CollectorStatusDetailed() + + // CollectorStatus, OverAllStatus, and PipelineStatus match. + assertErrorEventsMatch( + t, + component.StatusRecoverableError, + assert.AnError, + agg.CollectorStatus(), + dst.OverallStatus, + dst.PipelineStatusMap[traces.PipelineID], + ) + + // Component statuses match + assertEventsMatch(t, + component.StatusOK, + collectEvents( + dst.ComponentStatusMap[traces.PipelineID], traces.ReceiverID, traces.ProcessorID, + )..., + ) + assertErrorEventsMatch(t, + component.StatusRecoverableError, + assert.AnError, + dst.ComponentStatusMap[traces.PipelineID][traces.ExporterID], + ) + }) + +} + +func TestPipelineStatus(t *testing.T) { + agg := status.NewAggregator() + traces := testhelpers.NewPipelineMetadata("traces") + + t.Run("non existent pipeline", func(t *testing.T) { + st, err := agg.PipelineStatus("doesnotexist") + assert.Nil(t, st) + assert.Error(t, err) + }) + + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusOK) + + t.Run("pipeline exists / status successful", func(t *testing.T) { + st, err := agg.PipelineStatus(traces.PipelineID.String()) + require.NoError(t, err) + assertEventsMatch(t, component.StatusOK, agg.CollectorStatus(), st) + }) + + agg.RecordStatus( + traces.ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + + t.Run("pipeline exists / exporter error", func(t *testing.T) { + st, err := agg.PipelineStatus(traces.PipelineID.String()) + require.NoError(t, err) + assertErrorEventsMatch(t, + component.StatusRecoverableError, + assert.AnError, + agg.CollectorStatus(), + st, + ) + }) +} + +func TestPipelineStatusDetailed(t *testing.T) { + agg := status.NewAggregator() + traces := testhelpers.NewPipelineMetadata("traces") + + t.Run("non existent pipeline", func(t *testing.T) { + dst, err := agg.PipelineStatusDetailed("doesnotexist") + assert.Nil(t, dst) + assert.Error(t, err) + }) + + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusOK) + + t.Run("pipeline exists / status successful", func(t *testing.T) { + dst, err := agg.PipelineStatusDetailed(traces.PipelineID.String()) + require.NoError(t, err) + + // CollectorStatus, OverAllStatus, match. + assertEventsMatch(t, + component.StatusOK, + agg.CollectorStatus(), + dst.OverallStatus, + ) + + // Component statuses match + assertEventsMatch(t, + component.StatusOK, + collectEvents(dst.ComponentStatusMap, traces.InstanceIDs()...)..., + ) + }) + + agg.RecordStatus( + traces.ExporterID, + component.NewRecoverableErrorEvent(assert.AnError), + ) + + t.Run("pipeline exists / exporter error", func(t *testing.T) { + dst, err := agg.PipelineStatusDetailed(traces.PipelineID.String()) + require.NoError(t, err) + + // CollectorStatus, OverAllStatus, match. + assertErrorEventsMatch(t, + component.StatusRecoverableError, + assert.AnError, + agg.CollectorStatus(), + dst.OverallStatus, + ) + + // Component statuses match + assertEventsMatch(t, + component.StatusOK, + collectEvents(dst.ComponentStatusMap, traces.ReceiverID, traces.ProcessorID)..., + ) + assertErrorEventsMatch(t, + component.StatusRecoverableError, + assert.AnError, + dst.ComponentStatusMap[traces.ExporterID], + ) + + }) +} + +func TestStreaming(t *testing.T) { + agg := status.NewAggregator() + defer agg.Close() + + traces := testhelpers.NewPipelineMetadata("traces") + metrics := testhelpers.NewPipelineMetadata("metrics") + + traceEvents, err := agg.Subscribe(traces.PipelineID.String()) + require.NoError(t, err) + metricEvents, err := agg.Subscribe(metrics.PipelineID.String()) + require.NoError(t, err) + allEvents, err := agg.Subscribe("") + require.NoError(t, err) + + assert.Nil(t, <-traceEvents) + assert.Nil(t, <-metricEvents) + assert.NotNil(t, <-allEvents) + + // Start pipelines + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusStarting) + assertEventsRecvdMatch(t, component.StatusStarting, traceEvents, allEvents) + testhelpers.SeedAggregator(agg, metrics.InstanceIDs(), component.StatusStarting) + assertEventsRecvdMatch(t, component.StatusStarting, metricEvents, allEvents) + + // Successful start + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusOK) + assertEventsRecvdMatch(t, component.StatusOK, traceEvents) + // All is still in StatusStarting until the metrics pipeline reports OK + assertEventsRecvdMatch(t, component.StatusStarting, allEvents) + testhelpers.SeedAggregator(agg, metrics.InstanceIDs(), component.StatusOK) + assertEventsRecvdMatch(t, component.StatusOK, metricEvents, allEvents) + + // Traces Pipeline RecoverableError + agg.RecordStatus(traces.ExporterID, component.NewRecoverableErrorEvent(assert.AnError)) + assertErrorEventsRecvdMatch(t, + component.StatusRecoverableError, + assert.AnError, + traceEvents, + allEvents, + ) + + // Traces Pipeline Recover + agg.RecordStatus(traces.ExporterID, component.NewStatusEvent(component.StatusOK)) + assertEventsRecvdMatch(t, + component.StatusOK, + traceEvents, + allEvents, + ) + + // Stopping + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusStopping) + assertEventsRecvdMatch(t, component.StatusStopping, traceEvents, allEvents) + testhelpers.SeedAggregator(agg, metrics.InstanceIDs(), component.StatusStopping) + assertEventsRecvdMatch(t, component.StatusStopping, metricEvents, allEvents) + + // Stopped + testhelpers.SeedAggregator(agg, traces.InstanceIDs(), component.StatusStopped) + // All is not stopped until the metrics pipeline is stopped + assertEventsRecvdMatch(t, component.StatusStopped, traceEvents) + testhelpers.SeedAggregator(agg, metrics.InstanceIDs(), component.StatusStopped) + assertEventsRecvdMatch(t, component.StatusStopped, metricEvents, allEvents) +} + +// assertEventMatches ensures one or more events share the expected status and are +// otherwise equal, ignoring timestamp. +func assertEventsMatch( + t *testing.T, + expectedStatus component.Status, + events ...*component.StatusEvent, +) { + err0 := events[0].Err() + for _, ev := range events { + assert.Equal(t, expectedStatus, ev.Status()) + assert.Equal(t, err0, ev.Err()) + } +} + +// assertErrorEventMatches compares one or more status events with the expected +// status and expected error. +func assertErrorEventsMatch( + t *testing.T, + expectedStatus component.Status, + expectedErr error, + events ...*component.StatusEvent, +) { + assert.True(t, component.StatusIsError(expectedStatus)) + for _, ev := range events { + assert.Equal(t, expectedStatus, ev.Status()) + assert.Equal(t, expectedErr, ev.Err()) + } +} + +// collectEvents returns a slice of events collected from the componentMap using +// the provided instanceIDs +func collectEvents( + componentMap map[*component.InstanceID]*component.StatusEvent, + instanceIDs ...*component.InstanceID, +) (result []*component.StatusEvent) { + for _, id := range instanceIDs { + result = append(result, componentMap[id]) + } + return +} + +func assertEventsRecvdMatch(t *testing.T, + expectedStatus component.Status, + chans ...<-chan *component.StatusEvent, +) { + var err0 error + for i, evCh := range chans { + ev := <-evCh + if i == 0 { + err0 = ev.Err() + } + assert.Equal(t, expectedStatus, ev.Status()) + assert.Equal(t, err0, ev.Err()) + } +} + +func assertErrorEventsRecvdMatch(t *testing.T, + expectedStatus component.Status, + expectedErr error, + chans ...<-chan *component.StatusEvent, +) { + assert.True(t, component.StatusIsError(expectedStatus)) + for _, evCh := range chans { + ev := <-evCh + assert.Equal(t, expectedStatus, ev.Status()) + assert.Equal(t, expectedErr, ev.Err()) + } +} diff --git a/extension/healthcheckextensionv2/internal/testhelpers/helpers.go b/extension/healthcheckextensionv2/internal/testhelpers/helpers.go new file mode 100644 index 0000000000000..a5516244b6b43 --- /dev/null +++ b/extension/healthcheckextensionv2/internal/testhelpers/helpers.go @@ -0,0 +1,75 @@ +// Copyright The OpenTelemetry Authors +// SPDX-License-Identifier: Apache-2.0 + +package testhelpers // import "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/testhelpers" + +import ( + "go.opentelemetry.io/collector/component" + + "github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2/internal/status" +) + +// PipelineMetadata groups together component and instance IDs for a hypothetical pipeline used +// for testing purposes. +type PipelineMetadata struct { + PipelineID component.ID + ReceiverID *component.InstanceID + ProcessorID *component.InstanceID + ExporterID *component.InstanceID +} + +// InstanceIDs returns a slice of instanceIDs for components within the hypothetical pipeline. +func (p *PipelineMetadata) InstanceIDs() []*component.InstanceID { + return []*component.InstanceID{p.ReceiverID, p.ProcessorID, p.ExporterID} +} + +// Returns a metadata for a hypothetical pipeline. +func NewPipelineMetadata(typeVal component.Type) *PipelineMetadata { + pipelineID := component.NewID(typeVal) + return &PipelineMetadata{ + PipelineID: pipelineID, + ReceiverID: &component.InstanceID{ + ID: component.NewIDWithName(typeVal, "in"), + Kind: component.KindReceiver, + PipelineIDs: map[component.ID]struct{}{ + pipelineID: {}, + }, + }, + ProcessorID: &component.InstanceID{ + ID: component.NewID("batch"), + Kind: component.KindProcessor, + PipelineIDs: map[component.ID]struct{}{ + pipelineID: {}, + }, + }, + ExporterID: &component.InstanceID{ + ID: component.NewIDWithName(typeVal, "out"), + Kind: component.KindExporter, + PipelineIDs: map[component.ID]struct{}{ + pipelineID: {}, + }, + }, + } +} + +// Returns a map of hypothetical pipelines identified by their stringified typeVal. +func NewPipelines(typeVals ...component.Type) map[string]*PipelineMetadata { + result := make(map[string]*PipelineMetadata, len(typeVals)) + for _, val := range typeVals { + result[string(val)] = NewPipelineMetadata(val) + } + return result +} + +// SeedAggregator records a status event for each instanceID. +func SeedAggregator( + agg *status.Aggregator, + instanceIDs []*component.InstanceID, + statuses ...component.Status, +) { + for _, st := range statuses { + for _, id := range instanceIDs { + agg.RecordStatus(id, component.NewStatusEvent(st)) + } + } +} diff --git a/extension/healthcheckextensionv2/metadata.yaml b/extension/healthcheckextensionv2/metadata.yaml new file mode 100644 index 0000000000000..075e00471d6aa --- /dev/null +++ b/extension/healthcheckextensionv2/metadata.yaml @@ -0,0 +1,9 @@ +type: healthcheckv2 + +status: + class: extension + stability: + development: [extension] + distributions: [contrib] + codeowners: + active: [mwear] diff --git a/reports/distributions/contrib.yaml b/reports/distributions/contrib.yaml index 966721f8abee9..e248a730d955e 100644 --- a/reports/distributions/contrib.yaml +++ b/reports/distributions/contrib.yaml @@ -68,6 +68,7 @@ components: - file_storage - headers_setter - health_check + - healthcheckv2 - host_observer - http_forwarder - jaegerremotesampling diff --git a/versions.yaml b/versions.yaml index 1763ac6bb674e..ffa27153add8d 100644 --- a/versions.yaml +++ b/versions.yaml @@ -80,6 +80,7 @@ module-sets: - github.com/open-telemetry/opentelemetry-collector-contrib/extension/encoding/otlpencodingextension - github.com/open-telemetry/opentelemetry-collector-contrib/extension/headerssetterextension - github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextension + - github.com/open-telemetry/opentelemetry-collector-contrib/extension/healthcheckextensionv2 - github.com/open-telemetry/opentelemetry-collector-contrib/extension/httpforwarder - github.com/open-telemetry/opentelemetry-collector-contrib/extension/jaegerremotesampling - github.com/open-telemetry/opentelemetry-collector-contrib/extension/oauth2clientauthextension