{AzureMonitorDistro] Added Azure Container Apps resource detector. (#41803)

* Added Azure Container Apps resource detector.

* Update changelog

Author: rajkumar-rangaraj

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/CHANGELOG.md

@@ -4,12 +4,19 @@
 
 ### Features Added
 
+* Added Azure Container Apps resource detector.
+  ([#41803](https://github.com/Azure/azure-sdk-for-net/pull/41803))
+
 ### Breaking Changes
 
 ### Bugs Fixed
 
 ### Other Changes
 
+* Updated the vendored code in the `OpenTelemetry.ResourceDetectors.Azure`
+  resource detector to include the Azure Container Apps resource detector.
+  ([#41803](https://github.com/Azure/azure-sdk-for-net/pull/41803))
+
 ## 1.1.0 (2024-01-25)
 
 ### Other Changes

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/OpenTelemetryBuilderExtensions.cs

@@ -90,6 +90,7 @@ public static OpenTelemetryBuilder UseAzureMonitor(this OpenTelemetryBuilder bui
             Action<ResourceBuilder> configureResource = (r) => r
                 .AddAttributes(new[] { new KeyValuePair<string, object>("telemetry.distro.name", "Azure.Monitor.OpenTelemetry.AspNetCore") })
                 .AddDetector(new AppServiceResourceDetector())
+                .AddDetector(new AzureContainerAppsResourceDetector())
                 .AddDetector(new AzureVMResourceDetector());
 
             builder.ConfigureResource(configureResource);

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/Vendoring/OpenTelemetry.ResourceDetectors.Azure/AppServiceResourceDetector.cs

@@ -1,18 +1,5 @@
-// <copyright file="AppServiceResourceDetector.cs" company="OpenTelemetry Authors">
 // Copyright The OpenTelemetry Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// </copyright>
+// SPDX-License-Identifier: Apache-2.0
 
 #nullable enable
 
@@ -82,7 +69,7 @@ public Resource Detect()
         string websiteResourceGroup = Environment.GetEnvironmentVariable(ResourceAttributeConstants.AppServiceResourceGroupEnvVar);
         string websiteOwnerName = Environment.GetEnvironmentVariable(ResourceAttributeConstants.AppServiceOwnerNameEnvVar) ?? string.Empty;
 
-        int idx = websiteOwnerName.IndexOf('+');
+        int idx = websiteOwnerName.IndexOf("+", StringComparison.Ordinal);
         string subscriptionId = idx > 0 ? websiteOwnerName.Substring(0, idx) : websiteOwnerName;
 
         if (string.IsNullOrEmpty(websiteResourceGroup) || string.IsNullOrEmpty(subscriptionId))

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/Vendoring/OpenTelemetry.ResourceDetectors.Azure/AzureContainerAppsResourceDetector.cs

@@ -0,0 +1,55 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+using System;
+using System.Collections.Generic;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+
+namespace OpenTelemetry.ResourceDetectors.Azure;
+
+/// <summary>
+/// Resource detector for Azure Container Apps environment.
+/// </summary>
+internal sealed class AzureContainerAppsResourceDetector : IResourceDetector
+{
+    internal static readonly IReadOnlyDictionary<string, string> AzureContainerResourceAttributes = new Dictionary<string, string>
+    {
+        { ResourceSemanticConventions.AttributeServiceInstance, ResourceAttributeConstants.AzureContainerAppsReplicaNameEnvVar },
+        { ResourceSemanticConventions.AttributeServiceVersion, ResourceAttributeConstants.AzureContainerAppsRevisionEnvVar },
+    };
+
+    /// <inheritdoc/>
+    public Resource Detect()
+    {
+        List<KeyValuePair<string, object>> attributeList = new();
+
+        try
+        {
+            var containerAppName = Environment.GetEnvironmentVariable(ResourceAttributeConstants.AzureContainerAppsNameEnvVar);
+
+            if (containerAppName != null)
+            {
+                attributeList.Add(new KeyValuePair<string, object>(ResourceSemanticConventions.AttributeServiceName, containerAppName));
+                attributeList.Add(new KeyValuePair<string, object>(ResourceSemanticConventions.AttributeCloudProvider, ResourceAttributeConstants.AzureCloudProviderValue));
+                attributeList.Add(new KeyValuePair<string, object>(ResourceSemanticConventions.AttributeCloudPlatform, ResourceAttributeConstants.AzureContainerAppsPlatformValue));
+
+                foreach (var kvp in AzureContainerResourceAttributes)
+                {
+                    var attributeValue = Environment.GetEnvironmentVariable(kvp.Value);
+                    if (attributeValue != null)
+                    {
+                        attributeList.Add(new KeyValuePair<string, object>(kvp.Key, attributeValue));
+                    }
+                }
+            }
+        }
+        catch
+        {
+            // TODO: log exception.
+            return Resource.Empty;
+        }
+
+        return new Resource(attributeList);
+    }
+}

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/Vendoring/OpenTelemetry.ResourceDetectors.Azure/AzureVMResourceDetector.cs

@@ -1,18 +1,5 @@
-// <copyright file="AzureVMResourceDetector.cs" company="OpenTelemetry Authors">
 // Copyright The OpenTelemetry Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// </copyright>
+// SPDX-License-Identifier: Apache-2.0
 
 #nullable enable
 

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/Vendoring/OpenTelemetry.ResourceDetectors.Azure/AzureVmMetaDataRequestor.cs

@@ -1,18 +1,5 @@
-// <copyright file="AzureVmMetaDataRequestor.cs" company="OpenTelemetry Authors">
 // Copyright The OpenTelemetry Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// </copyright>
+// SPDX-License-Identifier: Apache-2.0
 
 #nullable enable
 

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/Vendoring/OpenTelemetry.ResourceDetectors.Azure/AzureVmMetadataResponse.cs

@@ -1,23 +1,9 @@
-// <copyright file="AzureVmMetadataResponse.cs" company="OpenTelemetry Authors">
 // Copyright The OpenTelemetry Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// </copyright>
+// SPDX-License-Identifier: Apache-2.0
 
 #nullable enable
 
 using System.Text.Json.Serialization;
-using OpenTelemetry.Resources;
 using OpenTelemetry.Trace;
 
 namespace OpenTelemetry.ResourceDetectors.Azure;

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/Vendoring/OpenTelemetry.ResourceDetectors.Azure/ResourceAttributeConstants.cs

@@ -1,18 +1,5 @@
-// <copyright file="ResourceAttributeConstants.cs" company="OpenTelemetry Authors">
 // Copyright The OpenTelemetry Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// </copyright>
+// SPDX-License-Identifier: Apache-2.0
 
 namespace OpenTelemetry.ResourceDetectors.Azure;
 
@@ -35,8 +22,14 @@ internal sealed class ResourceAttributeConstants
     internal const string AppServiceSlotNameEnvVar = "WEBSITE_SLOT_NAME";
     internal const string AppServiceStampNameEnvVar = "WEBSITE_HOME_STAMPNAME";
 
+    // Azure Container Apps environment variables
+    internal const string AzureContainerAppsNameEnvVar = "CONTAINER_APP_NAME";
+    internal const string AzureContainerAppsReplicaNameEnvVar = "CONTAINER_APP_REPLICA_NAME";
+    internal const string AzureContainerAppsRevisionEnvVar = "CONTAINER_APP_REVISION";
+
     // Azure resource attributes constant values
     internal const string AzureAppServicePlatformValue = "azure_app_service";
     internal const string AzureCloudProviderValue = "azure";
     internal const string AzureVmCloudPlatformValue = "azure_vm";
+    internal const string AzureContainerAppsPlatformValue = "azure_container_apps";
 }

sdk/monitor/Azure.Monitor.OpenTelemetry.AspNetCore/src/Vendoring/Shared/ResourceSemanticConventions.cs

@@ -1,22 +1,9 @@
-// <copyright file="ResourceSemanticConventions.cs" company="OpenTelemetry Authors">
 // Copyright The OpenTelemetry Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// </copyright>
+// SPDX-License-Identifier: Apache-2.0
 
 #nullable enable
 
-namespace OpenTelemetry.Resources;
+namespace OpenTelemetry.Trace;
 
 internal static class ResourceSemanticConventions
 {