Add an example to detect azure resource providers

azure-resource-detector/build.gradle.kts

@@ -0,0 +1,50 @@
+plugins {
+    id("java")
+    id("application")
+}
+
+group = "com.example"
+description = "OpenTelemetry Example for Azure Resource Detector"
+val moduleName by extra { "io.opentelemetry.examples.azure-resource-detector" }
+
+val autoconfConfig = listOf(
+    "-Dotel.traces.exporter=logging-otlp",
+    "-Dotel.metrics.exporter=none",
+    "-Dotel.logs.exporter=none",
+    "-Dotel.java.global-autoconfigure.enabled=true"
+)
+
+repositories {
+  mavenCentral()
+  mavenLocal()
+}
+
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(8))
+    }
+}
+
+application {
+    mainClass = "io.opentelemetry.example.azure.resource.detector.AzureResourceDetectorExample"
+    applicationDefaultJvmArgs = autoconfConfig
+}
+
+dependencies {
+    implementation("io.opentelemetry:opentelemetry-api:1.37.0")
+    implementation("io.opentelemetry:opentelemetry-sdk-extension-autoconfigure:1.37.0")
+    implementation("io.opentelemetry:opentelemetry-exporter-logging-otlp:1.37.0")
+    implementation("io.opentelemetry.contrib:opentelemetry-azure-resources:1.34.0-alpha-SNAPSHOT")
+}
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation(platform("org.junit:junit-bom:5.9.1"))
+    testImplementation("org.junit.jupiter:junit-jupiter")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}

azure-resource-detector/src/main/java/io/opentelemetry/example/azure/resource/detector/AzureResourceDetectorExample.java

@@ -0,0 +1,63 @@
+package io.opentelemetry.example.azure.resource.detector;
+
+import io.opentelemetry.api.trace.Span;
+import io.opentelemetry.context.Scope;
+import io.opentelemetry.contrib.azure.resource.AzureAppServiceResourceProvider;
+import io.opentelemetry.contrib.azure.resource.AzureContainersResourceProvider;
+import io.opentelemetry.contrib.azure.resource.AzureEnvVarPlatform;
+import io.opentelemetry.contrib.azure.resource.AzureFunctionsResourceProvider;
+import io.opentelemetry.sdk.OpenTelemetrySdk;
+import io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk;
+import io.opentelemetry.sdk.common.CompletableResultCode;
+import java.util.concurrent.TimeUnit;
+
+public class AzureResourceDetectorExample {
+  private static final String INSTRUMENTATION_SCOPE_NAME =
+      AzureResourceDetectorExample.class.getName();
+
+  public static void main(String[] args) {
+    // Get the autoconfigured OpenTelemetry SDK
+    OpenTelemetrySdk openTelemetrySdk =
+        AutoConfiguredOpenTelemetrySdk.initialize().getOpenTelemetrySdk();
+
+    AzureEnvVarPlatform detect = AzureEnvVarPlatform.detect(System.getenv());
+    if (detect == AzureEnvVarPlatform.APP_SERVICE) {
+      // Shows the resource attributes detected by the Azure App Service Resource Provider
+      System.out.println("Detecting Azure App Service resource");
+      AzureAppServiceResourceProvider resourceProvider = new AzureAppServiceResourceProvider();
+      System.out.println(resourceProvider.getAttributes() + "\n");
+    } else if (detect == AzureEnvVarPlatform.FUNCTIONS) {
+      // Shows the resource attributes detected by the Azure Function Resource Provider
+      System.out.println("Detecting Azure Function resource");
+      AzureFunctionsResourceProvider resourceProvider = new AzureFunctionsResourceProvider();
+      System.out.println(resourceProvider.getAttributes() + "\n");
+    } else if (detect == AzureEnvVarPlatform.CONTAINER_APP) {
+      // Shows the resource attributes detected by the Azure Container Insights Resource Provider
+      System.out.println("Detecting Azure Container App resource");
+      AzureContainersResourceProvider resourceProvider = new AzureContainersResourceProvider();
+      System.out.println(resourceProvider.getAttributes() + "\n");
+    }
+
+    // Shows the attributes attached to the Resource that was set for TracerProvider
+    // via the autoconfiguration SPI.
+    System.out.println("Detecting resource: Azure resources");
+    Span span =
+        openTelemetrySdk
+            .getTracer(INSTRUMENTATION_SCOPE_NAME)
+            .spanBuilder("azure-resource-detector")
+            .startSpan();
+    try (Scope ignored = span.makeCurrent()) {
+      // Simulate work: this could be simulating a network request or an expensive disk operation
+      Thread.sleep(500);
+    } catch (InterruptedException e) {
+      throw new RuntimeException(e);
+    } finally {
+      span.end();
+    }
+    // Flush all buffered traces
+    CompletableResultCode completableResultCode =
+        openTelemetrySdk.getSdkTracerProvider().shutdown();
+    // wait till export finishes
+    completableResultCode.join(10000, TimeUnit.MILLISECONDS);
+  }
+}

settings.gradle.kts

@@ -45,6 +45,7 @@ gradleEnterprise {
 rootProject.name = "opentelemetry-java-examples"
 include(
     ":opentelemetry-examples-autoconfigure",
+    ":opentelemetry-examples-azure-resource-detector",
     ":opentelemetry-examples-file-configuration",
     ":opentelemetry-examples-http",
     ":opentelemetry-examples-jaeger",
@@ -69,4 +70,4 @@ rootProject.children.forEach {
     it.projectDir = file(
         "$rootDir/${it.name}".replace("opentelemetry-examples-", "")
     )
-}
+}