Azure Monitor Logs OpenTelemetry Exporter

Supported .NET Versions:

Package is targeting .NET 7 and above.

Background:

AzureMonitorLogs Exporter is an open-source project that provides a simple and efficient way to export telemetry data from your application to Azure Log Analytics. The project is based on open telemetry dotnet implementation, adding a dedicated exporter targeting Log Analytics.

Suported instrumentation

Signal	Status
Traces	Supported
Logs	Not supported
Metrics	Not supported

Supported protocols and main traits:

Data Collector api:

Requirements for usage:

• Azure log analytics Workspace is provisioned and known.
• Workspace immutable id.
• Workspace shared key, either primary or secondary.
• Exporter will target user specified custom log table, creating it on the fly, when required.

Important to note - It is recommended not to use an existing custom log table, in order to avoid data loss.

Ingestion api:

Requirements for usage:

• Azure log analytics Workspace is provisioned and known.
• Workspace immutable id.
• Application is provisioned and known, representing the to be instrumented service.
• Dcr and Dce.
• Application was granted the appropriate permission to Dcr.
• A log analytics custom log table was provisioned in advance, targeting open telemetry trace schema.
• Dcr stream definition depicting schema must match destination custom log table schema.

Important to note - Ingestion api tutorial on how to set Application and Permissions

Expected custom log table schema:

Column	Type
TimeGenerated	datetime
Name	string
TraceId	string
TraceId	string
SpanId	string
ParentId	string
StartTime	datetime
EndTime	datetime
Attributes	dynamic

Getting started

Scope decleration:

using OpenTelemetry;
using OpenTelemetry.Exporter.AzureMonitorLogs;
using OpenTelemetry.Trace;

Data collector api:

Adding azure log analytics exporter:

using var tracerProvider = Sdk.CreateTracerProviderBuilder()
.AddAzureMonitorLogsExporter(o =>
{
    o.WorkspaceId = //Workspace immutable id.
    o.SharedKey = //workspace shared key, can be either primary or secondary.
    o.TableName = //destination custom log table.
})
.Build();

Ingestion api:

Adding azure log analytics exporter:

using var tracerProvider = Sdk.CreateTracerProviderBuilder()
.AddAzureMonitorLogsExporter(o =>
{
    o.WorkspaceId = //Workspace immutable id.
    o.ClientId = //Application client id.
    o.ClientSecret = //Application client secret.
    o.TenantId = //AAD Tenant id.
    o.AuthorityBaseUri = //AAD base url, for example - https://login.microsoftonline.com.
    o.Audience = //Azure Resource Manager target audience, for example - https://monitor.azure.com/.default
    o.DceUri = //dce uri, for example - https://yyyyyyy.{region}.ingest.monitor.azure.com
    o.DcrImmutableId = //dcr immutable id, for example - dcr-yyyyxxxxaaaaazzzz00000
    o.TableName = //destination custom log table.
})
.Build();

Examples:

Console application example