Rename db.client.connections.* to db.client.connection.*

Solves open-telemetry#967

.chloggen/db_client_connection_metric.yaml

@@ -10,7 +10,9 @@ change_type: breaking
 component: db
 
 # A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
-note: Rename `db.client.connections.usage` to `db.client.connections.count`.
+note: >
+  Rename `db.client.connections.*` namespace to `db.client.connection.*` and
+  rename `db.client.connection.usage` to `db.client.connection.count`.
 
 # Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
 # The values here must be integers.

model/metrics/database-metrics.yaml

@@ -108,16 +108,3 @@ groups:
     attributes:
       - ref: db.client.connections.pool.name
         requirement_level: required
-
-  - id: metric.db.client.connections.usage
-    type: metric
-    metric_name: db.client.connections.usage
-    stability: experimental
-    brief: "Deprecated, use `db.client.connections.count` instead."
-    instrument: updowncounter
-    unit: "{connection}"
-    attributes:
-      - ref: db.client.connections.state
-        requirement_level: required
-      - ref: db.client.connections.pool.name
-        requirement_level: required

model/metrics/deprecated/database.yaml

@@ -0,0 +1,110 @@
+groups:
+  - id: db.client.deprecated.client.connections.usage
+    type: metric
+    metric_name: db.client.connections.usage
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.count`."
+    brief: "Deprecated, use `db.client.connection.count` instead."
+    instrument: updowncounter
+    unit: "{connection}"
+    attributes:
+      - ref: db.client.connections.state
+        requirement_level: required
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.idle.max
+    type: metric
+    metric_name: db.client.connections.idle.max
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.idle.max`."
+    brief: "Deprecated, use `db.client.connection.idle.max` instead."
+    instrument: updowncounter
+    unit: "{connection}"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.idle.min
+    type: metric
+    metric_name: db.client.connections.idle.min
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.idle.min`."
+    brief: "Deprecated, use `db.client.connection.idle.min` instead."
+    instrument: updowncounter
+    unit: "{connection}"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.max
+    type: metric
+    metric_name: db.client.connections.max
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.max`."
+    brief: "Deprecated, use `db.client.connection.max` instead."
+    instrument: updowncounter
+    unit: "{connection}"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.pending_requests
+    type: metric
+    metric_name: db.client.connections.pending_requests
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.pending_requests`."
+    brief: "Deprecated, use `db.client.connection.pending_requests` instead."
+    instrument: updowncounter
+    unit: "{request}"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.timeouts
+    type: metric
+    metric_name: db.client.connections.timeouts
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.timeouts`."
+    brief: "Deprecated, use `db.client.connection.timeouts` instead."
+    instrument: counter
+    unit: "{timeout}"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.create_time
+    type: metric
+    metric_name: db.client.connections.create_time
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.create_time`."
+    brief: "Deprecated, use `db.client.connection.create_time` instead."
+    instrument: histogram
+    unit: "ms"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.wait_time
+    type: metric
+    metric_name: db.client.connections.wait_time
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.wait_time`."
+    brief: "Deprecated, use `db.client.connection.wait_time` instead."
+    instrument: histogram
+    unit: "ms"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required
+
+  - id: db.client.deprecated.client.connections.use_time
+    type: metric
+    metric_name: db.client.connections.use_time
+    stability: experimental
+    deprecated: "Replaced by `db.client.connection.use_time`."
+    brief: "Deprecated, use `db.client.connection.use_time` instead."
+    instrument: histogram
+    unit: "ms"
+    attributes:
+      - ref: db.client.connections.pool.name
+        requirement_level: required

schema-next.yaml

@@ -6,7 +6,15 @@ versions:
       changes:
         # https://github.com/open-telemetry/semantic-conventions/pull/966
         - rename_metrics:
-            db.client.connections.usage: db.client.connections.count
+            db.client.connections.usage: db.client.connection.count
+            db.client.connections.idle.max: db.client.connection.idle.max
+            db.client.connections.idle.min: db.client.connection.idle.min
+            db.client.connections.max: db.client.connection.max
+            db.client.connections.pending_requests: db.client.connection.pending_requests
+            db.client.connections.timeouts: db.client.connection.timeouts
+            db.client.connections.create_time: db.client.connection.create_time
+            db.client.connections.wait_time: db.client.connection.wait_time
+            db.client.connections.use_time: db.client.connection.use_time
         # https://github.com/open-telemetry/semantic-conventions/pull/909
         - rename_attributes:
             attribute_map: