[chore] add new metric with input_type configuration

cmd/mdatagen/internal/samplereceiver/documentation.md

@@ -42,6 +42,24 @@ The metric will be will be removed soon.
 | ---- | ----------- | ---------- | ----------------------- | --------- |
 | s | Sum | Double | Delta | false |
 
+### metric.input_type
+
+Monotonic cumulative sum int metric with string input_type enabled by default.
+
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
+| ---- | ----------- | ---------- | ----------------------- | --------- |
+| s | Sum | Int | Cumulative | true |
+
+#### Attributes
+
+| Name | Description | Values |
+| ---- | ----------- | ------ |
+| string_attr | Attribute with any string value. | Any Str |
+| state | Integer attribute with overridden name. | Any Int |
+| enum_attr | Attribute with a known set of string values. | Str: ``red``, ``green``, ``blue`` |
+| slice_attr | Attribute with a slice value. | Any Slice |
+| map_attr | Attribute with a map value. | Any Map |
+
 ## Optional Metrics
 
 The following metrics are not emitted by default. Each of them can be enabled by applying the following configuration:

cmd/mdatagen/internal/samplereceiver/internal/metadata/testdata/config.yaml

@@ -5,6 +5,8 @@ all_set:
       enabled: true
     default.metric.to_be_removed:
       enabled: true
+    metric.input_type:
+      enabled: true
     optional.metric:
       enabled: true
     optional.metric.empty_unit:
@@ -32,6 +34,8 @@ none_set:
       enabled: false
     default.metric.to_be_removed:
       enabled: false
+    metric.input_type:
+      enabled: false
     optional.metric:
       enabled: false
     optional.metric.empty_unit:

cmd/mdatagen/internal/samplereceiver/metadata.yaml

@@ -137,3 +137,14 @@ metrics:
       aggregation_temporality: delta
     warnings:
       if_enabled: This metric is deprecated and will be removed soon.
+
+  metric.input_type:
+    enabled: true
+    description: Monotonic cumulative sum int metric with string input_type enabled by default.
+    unit: s
+    sum:
+      value_type: int
+      input_type: string
+      monotonic: true
+      aggregation_temporality: cumulative
+    attributes: [ string_attr, overridden_int_attr, enum_attr, slice_attr, map_attr ]

cmd/mdatagen/loader_test.go

@@ -217,6 +217,18 @@ func TestLoadMetadata(t *testing.T) {
 							Mono:                   Mono{Monotonic: false},
 						},
 					},
+					"metric.input_type": {
+						Enabled:     true,
+						Description: "Monotonic cumulative sum int metric with string input_type enabled by default.",
+						Unit:        strPtr("s"),
+						Sum: &sum{
+							MetricValueType:        MetricValueType{pmetric.NumberDataPointValueTypeInt},
+							MetricInputType:        MetricInputType{InputType: "string"},
+							AggregationTemporality: AggregationTemporality{Aggregation: pmetric.AggregationTemporalityCumulative},
+							Mono:                   Mono{Monotonic: true},
+						},
+						Attributes: []attributeName{"string_attr", "overridden_int_attr", "enum_attr", "slice_attr", "map_attr"},
+					},
 				},
 				ScopeName:       "go.opentelemetry.io/collector/internal/receiver/samplereceiver",
 				ShortFolderName: "sample",