ApplicationInsights-dotnet/NETCORE/src/Shared/Vendoring/OpenTelemetry.Resources.Azure/AzureContainerAppsResourceDetector.cs at fea1d3bcf9da28de715c0915cf1d1db27ca07082 · microsoft/ApplicationInsights-dotnet · GitHub

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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

namespace Microsoft.ApplicationInsights.Shared.Vendoring.OpenTelemetry.Resources.Azure
{
    using System;
    using System.Collections.Generic;
    using global::OpenTelemetry.Resources;

    /// <summary>
    /// Resource detector for Azure Container Apps environment.
    /// </summary>
    internal sealed class AzureContainerAppsResourceDetector : IResourceDetector
    {
        internal static readonly IReadOnlyDictionary<string, string> AzureContainerAppResourceAttributes = new Dictionary<string, string>
    {
        { ResourceSemanticConventions.AttributeServiceInstance, ResourceAttributeConstants.AzureContainerAppsReplicaNameEnvVar },
        { ResourceSemanticConventions.AttributeServiceVersion, ResourceAttributeConstants.AzureContainerAppsRevisionEnvVar },
    };

        internal static readonly IReadOnlyDictionary<string, string> AzureContainerAppJobResourceAttributes = new Dictionary<string, string>
    {
        { ResourceSemanticConventions.AttributeServiceInstance, ResourceAttributeConstants.AzureContainerAppsReplicaNameEnvVar },
        { ResourceSemanticConventions.AttributeServiceVersion, ResourceAttributeConstants.AzureContainerAppJobExecutionNameEnvVar },
    };

        /// <inheritdoc/>
        public Resource Detect()
        {
            List<KeyValuePair<string, object>> attributeList = new List<KeyValuePair<string, object>>();
            try
            {
                var containerAppName = Environment.GetEnvironmentVariable(ResourceAttributeConstants.AzureContainerAppsNameEnvVar);
                var containerAppJobName = Environment.GetEnvironmentVariable(ResourceAttributeConstants.AzureContainerAppJobNameEnvVar);

                if (containerAppName != null)
                {
                    AddBaseAttributes(attributeList, containerAppName);

                    AddResourceAttributes(attributeList, AzureContainerAppResourceAttributes);
                }
                else if (containerAppJobName != null)
                {
                    AddBaseAttributes(attributeList, containerAppJobName);

                    AddResourceAttributes(attributeList, AzureContainerAppJobResourceAttributes);
                }
            }
            catch
            {
                // TODO: log exception.
                return Resource.Empty;
            }

            return new Resource(attributeList);
        }

        private static void AddResourceAttributes(List<KeyValuePair<string, object>> attributeList, IReadOnlyDictionary<string, string> resourceAttributes)
        {
            foreach (var kvp in resourceAttributes)
            {
                var attributeValue = Environment.GetEnvironmentVariable(kvp.Value);
                if (attributeValue != null)
                {
                    attributeList.Add(new KeyValuePair<string, object>(kvp.Key, attributeValue));
                }
            }
        }

        private static void AddBaseAttributes(List<KeyValuePair<string, object>> attributeList, string serviceName)
        {
            attributeList.Add(new KeyValuePair<string, object>(ResourceSemanticConventions.AttributeServiceName, serviceName));
            attributeList.Add(new KeyValuePair<string, object>(ResourceSemanticConventions.AttributeCloudProvider, ResourceAttributeConstants.AzureCloudProviderValue));
            attributeList.Add(new KeyValuePair<string, object>(ResourceSemanticConventions.AttributeCloudPlatform, ResourceAttributeConstants.AzureContainerAppsPlatformValue));
        }
    }
}