add configurations for OpenTelemetry

Author: ks6088ts

docs/index.md

@@ -6,6 +6,7 @@
 
 ## Azure Functions
 
+- [Azure Functions で OpenTelemetry を使用する](https://learn.microsoft.com/ja-jp/azure/azure-functions/opentelemetry-howto?tabs=app-insights&pivots=programming-language-python)
 - [Using FastAPI Framework with Azure Functions](https://learn.microsoft.com/en-us/samples/azure-samples/fastapi-on-azure-functions/fastapi-on-azure-functions/)
 - [ks6088ts-labs/azure-functions-python](https://github.com/ks6088ts-labs/azure-functions-python)
 
@@ -19,6 +20,7 @@
 ## Application Insights
 
 - [Application Insights の概要 - OpenTelemetry の可観測性](https://learn.microsoft.com/ja-jp/azure/azure-monitor/app/app-insights-overview)
+- [Azure Monitor OpenTelemetry を設定する](https://learn.microsoft.com/ja-jp/azure/azure-monitor/app/opentelemetry-configuration?tabs=python)
 - [open-telemetry/opentelemetry-python > Basic Trace](https://github.com/open-telemetry/opentelemetry-python/tree/main/docs/examples/basic_tracer)
 - [FastAPI のテレメトリデータを Azure Application Insights に送る](https://qiita.com/hoto17296/items/2f366dfabdbe3d1d4e97)
 - [【Azure Functions】 - Application Insights のログが表示されない問題](https://zenn.dev/headwaters/articles/ff19f7e1b99b44)

host.json

@@ -1,5 +1,6 @@
 {
   "version": "2.0",
+  "telemetryMode": "OpenTelemetry",
   "extensions": {
     "http": {
       "routePrefix": ""

local.settings.json

@@ -2,6 +2,9 @@
   "IsEncrypted": false,
   "Values": {
     "APPLICATIONINSIGHTS_CONNECTION_STRING": "InstrumentationKey=YOUR_INSTRUMENTATION_KEY;IngestionEndpoint=https://japaneast-1.in.applicationinsights.azure.com/;LiveEndpoint=https://japaneast.livediagnostics.monitor.azure.com/;ApplicationId=YOUR_APPLICATION_ID",
+    "OTEL_RESOURCE_ATTRIBUTES": "service.namespace=my-namespace,service.instance.id=my-instance",
+    "OTEL_SERVICE_NAME": "my-helloworld-service",
+    "OTEL_TRACES_SAMPLER_ARG": "1",
     "FUNCTIONS_WORKER_RUNTIME": "python",
     "AzureWebJobsFeatureFlags": "EnableWorkerIndexing",
     "AzureWebJobsStorage": ""

template_fastapi/app.py

@@ -40,6 +40,7 @@ def server_request_hook(span: Span, scope: dict):
 
     configure_azure_monitor(
         connection_string=AZURE_CONNECTION_STRING,
+        # enable_live_metrics=True,
         server_request_hook=server_request_hook,
     )
     FastAPIInstrumentor.instrument_app(app)