feat: add certificate metrics to agent for NGINXaaS

internal/collector/certificatereceiver/metadata.yaml

@@ -0,0 +1,44 @@
+type: certificate
+scope_name: otelcol/certificatereceiver
+
+status:
+  class: receiver
+  stability:
+    beta: [metrics]
+  distributions: [contrib]
+
+resource_attributes:
+  instance.id:
+    description: The nginx instance id.
+    type: string
+    enabled: true
+
+attributes:
+  file_path:
+    description: "The full file path of the certificate."
+    type: string
+  public_key_algorithm:
+    description: "The public key algorithm."
+    type: string
+  serial_number:
+    description: "The serial number of the certificate."
+    type: string
+  subject.common_name:
+    description: "The Common Name of the certificate."
+    type: string
+
+metrics:
+  nginx.certificate.expiry:
+    enabled: true
+    description: "The Unix timestamp (in seconds) at which an SSL/TLS certificate expires"
+    stability:
+      level: development
+    gauge:
+      value_type: int
+    unit: "s"
+    attributes:
+      - file_path
+      - public_key_algorithm
+      - serial_number
+      - subject.common_name
+

internal/collector/containermetricsreceiver/internal/scraper/cpuscraper/documentation.md

@@ -16,26 +16,26 @@ metrics:
 
 Number of available logical CPUs.
 
-| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
-| ---- | ----------- | ---------- | ----------------------- | --------- |
-| {cpu} | Sum | Int | Cumulative | false |
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic | Stability |
+| ---- | ----------- | ---------- | ----------------------- | --------- | --------- |
+| {cpu} | Sum | Int | Cumulative | false | Development |
 
 ### system.cpu.utilization
 
 Difference in system.cpu.time since the last measurement per logical CPU, divided by the elapsed time (value in interval [0,1]).
 
-| Unit | Metric Type | Value Type |
-| ---- | ----------- | ---------- |
-| 1 | Gauge | Double |
+| Unit | Metric Type | Value Type | Stability |
+| ---- | ----------- | ---------- | --------- |
+| 1 | Gauge | Double | Development |
 
 #### Attributes
 
-| Name | Description | Values |
-| ---- | ----------- | ------ |
-| state | CPU usage type. | Str: ``idle``, ``interrupt``, ``nice``, ``softirq``, ``steal``, ``system``, ``user``, ``wait`` |
+| Name | Description | Values | Requirement Level |
+| ---- | ----------- | ------ | -------- |
+| state | CPU usage type. | Str: ``idle``, ``interrupt``, ``nice``, ``softirq``, ``steal``, ``system``, ``user``, ``wait`` | Recommended |
 
 ## Resource Attributes
 
 | Name | Description | Values | Enabled |
 | ---- | ----------- | ------ | ------- |
-| resource.id | The resource id. | Any Str | false |
+| resource.id | The resource id. | Any Str | true |

internal/collector/containermetricsreceiver/internal/scraper/cpuscraper/metadata.yaml

@@ -12,6 +12,7 @@ resource_attributes:
   resource.id:
     description: The resource id.
     type: string
+    enabled: true
 
 attributes:
   state:
@@ -20,19 +21,23 @@ attributes:
     enum: [idle, interrupt, nice, softirq, steal, system, user, wait]
 
 metrics:
-  system.cpu.utilization:
-    enabled: true
-    description: Difference in system.cpu.time since the last measurement per logical CPU, divided by the elapsed time (value in interval [0,1]).
-    unit: "1"
-    gauge:
-      value_type: double
-    attributes: [ state ]
   system.cpu.logical.count:
     enabled: true
     description: Number of available logical CPUs.
+    stability:
+      level: development
     unit: "{cpu}"
     sum:
       value_type: int
       monotonic: false
       aggregation_temporality: cumulative
+  system.cpu.utilization:
+    enabled: true
+    description: Difference in system.cpu.time since the last measurement per logical CPU, divided by the elapsed time (value in interval [0,1]).
+    stability:
+      level: development
+    unit: "1"
+    gauge:
+      value_type: double
+    attributes: [ state ]
 

internal/collector/containermetricsreceiver/internal/scraper/memoryscraper/documentation.md

@@ -16,18 +16,18 @@ metrics:
 
 Bytes of memory in use.
 
-| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic |
-| ---- | ----------- | ---------- | ----------------------- | --------- |
-| By | Sum | Int | Cumulative | false |
+| Unit | Metric Type | Value Type | Aggregation Temporality | Monotonic | Stability |
+| ---- | ----------- | ---------- | ----------------------- | --------- | --------- |
+| By | Sum | Int | Cumulative | false | Development |
 
 #### Attributes
 
-| Name | Description | Values |
-| ---- | ----------- | ------ |
-| state | Breakdown of memory usage by type. | Str: ``buffered``, ``cached``, ``inactive``, ``free``, ``slab_reclaimable``, ``slab_unreclaimable``, ``used`` |
+| Name | Description | Values | Requirement Level |
+| ---- | ----------- | ------ | -------- |
+| state | Breakdown of memory usage by type. | Str: ``buffered``, ``cached``, ``inactive``, ``free``, ``slab_reclaimable``, ``slab_unreclaimable``, ``used`` | Recommended |
 
 ## Resource Attributes
 
 | Name | Description | Values | Enabled |
 | ---- | ----------- | ------ | ------- |
-| resource.id | The resource id. | Any Str | false |
+| resource.id | The resource id. | Any Str | true |

internal/collector/containermetricsreceiver/internal/scraper/memoryscraper/metadata.yaml

@@ -12,6 +12,7 @@ resource_attributes:
   resource.id:
     description: The resource id.
     type: string
+    enabled: true
 
 attributes:
   state:
@@ -23,6 +24,8 @@ metrics:
   system.memory.usage:
     enabled: true
     description: Bytes of memory in use.
+    stability:
+      level: development
     unit: By
     sum:
       value_type: int