Cosmos DB: Added regions_contacted as new dimension

.chloggen/users_sourabhjain_moreoperationmetrics.yaml

@@ -0,0 +1,22 @@
+# Use this changelog template to create an entry for release notes.
+#
+# If your change doesn't affect end users you should instead start
+# your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
+component: db
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Added `db.cosmosdb.regions_contacted` attribute to Cosmos DB metrics and traces.
+
+# 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.
+issues: [1525]
+
+# (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:

docs/attributes-registry/db.md

@@ -195,6 +195,7 @@ This group defines attributes for Azure Cosmos DB.
 | <a id="db-cosmosdb-client-id" href="#db-cosmosdb-client-id">`db.cosmosdb.client_id`</a> | string | Unique Cosmos client instance id. | `3ba4827d-4422-483f-b59f-85b74211c11d` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | <a id="db-cosmosdb-connection-mode" href="#db-cosmosdb-connection-mode">`db.cosmosdb.connection_mode`</a> | string | Cosmos client connection mode. | `gateway`; `direct` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | <a id="db-cosmosdb-consistency-level" href="#db-cosmosdb-consistency-level">`db.cosmosdb.consistency_level`</a> | string | Account or request [consistency level](https://learn.microsoft.com/azure/cosmos-db/consistency-levels). | `Eventual`; `ConsistentPrefix`; `BoundedStaleness`; `Strong`; `Session` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+| <a id="db-cosmosdb-regions-contacted" href="#db-cosmosdb-regions-contacted">`db.cosmosdb.regions_contacted`</a> | string[] | List of regions contacted by the Azure Cosmos DB operation. Format of region name would be similar to the "displayname" mentioned [here](https://learn.microsoft.com/en-us/rest/api/subscription/subscriptions/list-locations?view=rest-subscription-2021-10-01&tabs=HTTP#location) | `["North Central US"]` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | <a id="db-cosmosdb-request-charge" href="#db-cosmosdb-request-charge">`db.cosmosdb.request_charge`</a> | double | Request units consumed for the operation. | `46.18`; `1.0` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | <a id="db-cosmosdb-request-content-length" href="#db-cosmosdb-request-content-length">`db.cosmosdb.request_content_length`</a> | int | Request payload size in bytes. |  | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
 | <a id="db-cosmosdb-sub-status-code" href="#db-cosmosdb-sub-status-code">`db.cosmosdb.sub_status_code`</a> | int | Cosmos DB sub status code. | `1000`; `1002` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |