Semantic Conventions for Microsoft Cosmos DB

Status: Experimental

The Semantic Conventions for Microsoft Cosmos DB extend and override the Database Semantic Conventions that describe common database operations attributes in addition to the Semantic Conventions described on this page.

Call-level attributes

db.system MUST be set to "cosmosdb".

Cosmos DB instrumentation includes call-level (public API) surface spans and network spans. Depending on the connection mode (Gateway or Direct), network-level spans may also be created.

[1]: when performing one of the operations in this list

[2]: when response was received and contained sub-code.

[3]: The user-agent value is generated by SDK which is a combination of
sdk_version : Current version of SDK. e.g. ‘cosmos-netstandard-sdk/3.23.0’
direct_pkg_version : Direct package version used by Cosmos DB SDK. e.g. ‘3.23.1’
number_of_client_instances : Number of cosmos client instances created by the application. e.g. ‘1’
type_of_machine_architecture : Machine architecture. e.g. ‘X64’
operating_system : Operating System. e.g. ‘Linux 5.4.0-1098-azure 104 18’
runtime_framework : Runtime Framework. e.g. ‘.NET Core 3.1.32’
failover_information : Generated key to determine if region failover enabled. Format Reg-{D (Disabled discovery)}-S(application region)|L(List of preferred regions)|N(None, user did not configure it). Default value is “NS”.

db.cosmosdb.connection_mode MUST be one of the following:

db.cosmosdb.operation_type has the following list of well-known values. If one of them applies, then the respective value MUST be used, otherwise a custom value MAY be used.

In addition to Cosmos DB attributes, all spans include az.namespace attribute representing Azure Resource Provider namespace that MUST be equal to Microsoft.DocumentDB.

Example