forked from open-telemetry/opentelemetry-collector-contrib
/
in_process_collector.go
135 lines (116 loc) · 3.22 KB
/
in_process_collector.go
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
package testbed // import "github.com/open-telemetry/opentelemetry-collector-contrib/testbed/testbed"
import (
"context"
"fmt"
"os"
"sync"
"time"
"github.com/shirou/gopsutil/v3/process"
"go.opentelemetry.io/collector/component"
"go.opentelemetry.io/collector/confmap"
"go.opentelemetry.io/collector/confmap/provider/fileprovider"
"go.opentelemetry.io/collector/otelcol"
)
// inProcessCollector implements the OtelcolRunner interfaces running a single otelcol as a go routine within the
// same process as the test executor.
type inProcessCollector struct {
factories otelcol.Factories
configStr string
svc *otelcol.Collector
stopped bool
configFile string
wg sync.WaitGroup
}
// NewInProcessCollector creates a new inProcessCollector using the supplied component factories.
func NewInProcessCollector(factories otelcol.Factories) OtelcolRunner {
return &inProcessCollector{
factories: factories,
}
}
func (ipp *inProcessCollector) PrepareConfig(configStr string) (configCleanup func(), err error) {
configCleanup = func() {
// NoOp
}
ipp.configStr = configStr
return configCleanup, err
}
func (ipp *inProcessCollector) Start(_ StartParams) error {
var err error
confFile, err := os.CreateTemp(os.TempDir(), "conf-")
if err != nil {
return err
}
if _, err = confFile.Write([]byte(ipp.configStr)); err != nil {
os.Remove(confFile.Name())
return err
}
ipp.configFile = confFile.Name()
fmp := fileprovider.NewWithSettings(confmap.ProviderSettings{})
configProvider, err := otelcol.NewConfigProvider(
otelcol.ConfigProviderSettings{
ResolverSettings: confmap.ResolverSettings{
URIs: []string{ipp.configFile},
Providers: map[string]confmap.Provider{fmp.Scheme(): fmp},
},
})
if err != nil {
return err
}
settings := otelcol.CollectorSettings{
BuildInfo: component.NewDefaultBuildInfo(),
Factories: func() (otelcol.Factories, error) { return ipp.factories, nil },
ConfigProvider: configProvider,
SkipSettingGRPCLogger: true,
}
ipp.svc, err = otelcol.NewCollector(settings)
if err != nil {
return err
}
ipp.wg.Add(1)
go func() {
defer ipp.wg.Done()
if appErr := ipp.svc.Run(context.Background()); appErr != nil {
// TODO: Pass this to the error handler.
panic(appErr)
}
}()
for {
switch state := ipp.svc.GetState(); state {
case otelcol.StateStarting:
time.Sleep(time.Second)
case otelcol.StateRunning:
return nil
default:
return fmt.Errorf("unable to start, otelcol state is %d", state)
}
}
}
func (ipp *inProcessCollector) Stop() (stopped bool, err error) {
if !ipp.stopped {
ipp.stopped = true
ipp.svc.Shutdown()
os.Remove(ipp.configFile)
}
ipp.wg.Wait()
stopped = ipp.stopped
return stopped, err
}
func (ipp *inProcessCollector) WatchResourceConsumption() error {
return nil
}
func (ipp *inProcessCollector) GetProcessMon() *process.Process {
return nil
}
func (ipp *inProcessCollector) GetTotalConsumption() *ResourceConsumption {
return &ResourceConsumption{
CPUPercentAvg: 0,
CPUPercentMax: 0,
RAMMiBAvg: 0,
RAMMiBMax: 0,
}
}
func (ipp *inProcessCollector) GetResourceConsumption() string {
return ""
}