AWS ECS Detector: set cloud.{account.id,availability_zone,region,resource_id}

CHANGELOG.md

@@ -2,6 +2,11 @@
 
 ## Unreleased
 
+### Resource providers
+
+- Add support `cloud.account.id`, `cloud.availability_zone`, `cloud.region` and `cloud.resource_id`
+  ([#1171](https://github.com/open-telemetry/opentelemetry-java-contrib/pull/1171))
+
 ## Version 1.33.0 (2024-02-21)
 
 ### Compressors

aws-resources/src/main/java/io/opentelemetry/contrib/aws/resource/EcsResource.java

@@ -99,6 +99,39 @@ static void fetchMetadata(
     }
   }
 
+  private static Optional<String> getAccountId(@Nullable String arn) {
+    return getArnPart(arn, ArnPart.ACCOUNT);
+  }
+
+  private static Optional<String> getRegion(@Nullable String arn) {
+    return getArnPart(arn, ArnPart.REGION);
+  }
+
+  private static enum ArnPart {
+    REGION(3),
+    ACCOUNT(4);
+
+    final int partIndex;
+
+    private ArnPart(int partIndex) {
+      this.partIndex = partIndex;
+    }
+  }
+
+  private static Optional<String> getArnPart(@Nullable String arn, ArnPart arnPart) {
+    if (arn == null) {
+      return Optional.empty();
+    }
+
+    String[] arnParts = arn.split(":");
+
+    if (arnPart.partIndex >= arnParts.length) {
+      return Optional.empty();
+    }
+
+    return Optional.of(arnParts[arnPart.partIndex]);
+  }
+
   // Suppression is required for CONTAINER_IMAGE_TAG until we are ready to upgrade.
   @SuppressWarnings("deprecation")
   static void parseResponse(
@@ -109,17 +142,27 @@ static void parseResponse(
       return;
     }
 
+    // Either the container ARN or the task ARN, they both contain the
+    // account id and region tokens we need later for the cloud.account.id
+    // and cloud.region attributes.
+    String arn = null;
+
     while (parser.nextToken() != JsonToken.END_OBJECT) {
       String value = parser.nextTextValue();
       switch (parser.currentName()) {
+        case "AvailabilityZone":
+          attrBuilders.put(ResourceAttributes.CLOUD_AVAILABILITY_ZONE, value);
+          break;
         case "DockerId":
           attrBuilders.put(ResourceAttributes.CONTAINER_ID, value);
           break;
         case "DockerName":
           attrBuilders.put(ResourceAttributes.CONTAINER_NAME, value);
           break;
         case "ContainerARN":
+          arn = value;
           attrBuilders.put(ResourceAttributes.AWS_ECS_CONTAINER_ARN, value);
+          attrBuilders.put(ResourceAttributes.CLOUD_RESOURCE_ID, value);
           logArnBuilder.setContainerArn(value);
           break;
         case "Image":
@@ -149,6 +192,7 @@ static void parseResponse(
           logArnBuilder.setRegion(value);
           break;
         case "TaskARN":
+          arn = value;
           attrBuilders.put(ResourceAttributes.AWS_ECS_TASK_ARN, value);
           break;
         case "LaunchType":
@@ -165,6 +209,10 @@ static void parseResponse(
           break;
       }
     }
+
+    getRegion(arn).ifPresent(region -> attrBuilders.put(ResourceAttributes.CLOUD_REGION, region));
+    getAccountId(arn)
+        .ifPresent(accountId -> attrBuilders.put(ResourceAttributes.CLOUD_ACCOUNT_ID, accountId));
   }
 
   private EcsResource() {}
@@ -196,9 +244,7 @@ void setLogStreamName(@Nullable String logStreamName) {
     }
 
     void setContainerArn(@Nullable String containerArn) {
-      if (containerArn != null) {
-        account = containerArn.split(":")[4];
-      }
+      account = getAccountId(containerArn).orElse(null);
     }
 
     Optional<String> getLogGroupArn() {

aws-resources/src/test/java/io/opentelemetry/contrib/aws/resource/EcsResourceTest.java

@@ -53,6 +53,9 @@ void testCreateAttributesV3() throws IOException {
         .containsOnly(
             entry(ResourceAttributes.CLOUD_PROVIDER, "aws"),
             entry(ResourceAttributes.CLOUD_PLATFORM, "aws_ecs"),
+            entry(ResourceAttributes.CLOUD_ACCOUNT_ID, "012345678910"),
+            entry(ResourceAttributes.CLOUD_REGION, "us-east-2"),
+            entry(ResourceAttributes.CLOUD_AVAILABILITY_ZONE, "us-east-2b"),
             entry(ResourceAttributes.CONTAINER_NAME, "ecs-nginx-5-nginx-curl-ccccb9f49db0dfe0d901"),
             entry(
                 ResourceAttributes.CONTAINER_ID,
@@ -89,6 +92,12 @@ void testCreateAttributesV4() throws IOException {
         .containsOnly(
             entry(ResourceAttributes.CLOUD_PROVIDER, "aws"),
             entry(ResourceAttributes.CLOUD_PLATFORM, "aws_ecs"),
+            entry(ResourceAttributes.CLOUD_ACCOUNT_ID, "111122223333"),
+            entry(ResourceAttributes.CLOUD_REGION, "us-west-2"),
+            entry(
+                ResourceAttributes.CLOUD_RESOURCE_ID,
+                "arn:aws:ecs:us-west-2:111122223333:container/0206b271-b33f-47ab-86c6-a0ba208a70a9"),
+            entry(ResourceAttributes.CLOUD_AVAILABILITY_ZONE, "us-west-2d"),
             entry(ResourceAttributes.CONTAINER_NAME, "ecs-curltest-26-curl-cca48e8dcadd97805600"),
             entry(
                 ResourceAttributes.CONTAINER_ID,