Azure Functions .NET samples (#1939)

dotnet/samples/AzureFunctions/06_LongRunningTools/Program.cs

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+// Copyright (c) Microsoft. All rights reserved.
+
+using Azure;
+using Azure.AI.OpenAI;
+using Azure.Identity;
+using LongRunningTools;
+using Microsoft.Agents.AI;
+using Microsoft.Agents.AI.Hosting.AzureFunctions;
+using Microsoft.Azure.Functions.Worker.Builder;
+using Microsoft.Extensions.AI;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using OpenAI;
+
+// Get the Azure OpenAI endpoint and deployment name from environment variables.
+string endpoint = Environment.GetEnvironmentVariable("AZURE_OPENAI_ENDPOINT")
+    ?? throw new InvalidOperationException("AZURE_OPENAI_ENDPOINT is not set.");
+string deploymentName = Environment.GetEnvironmentVariable("AZURE_OPENAI_DEPLOYMENT")
+    ?? throw new InvalidOperationException("AZURE_OPENAI_DEPLOYMENT is not set.");
+
+// Use Azure Key Credential if provided, otherwise use Azure CLI Credential.
+string? azureOpenAiKey = Environment.GetEnvironmentVariable("AZURE_OPENAI_KEY");
+AzureOpenAIClient client = !string.IsNullOrEmpty(azureOpenAiKey)
+    ? new AzureOpenAIClient(new Uri(endpoint), new AzureKeyCredential(azureOpenAiKey))
+    : new AzureOpenAIClient(new Uri(endpoint), new AzureCliCredential());
+
+// Agent used by the orchestration to write content.
+const string WriterAgentName = "Writer";
+const string WriterAgentInstructions =
+    """
+    You are a professional content writer who creates high-quality articles on various topics.
+    You write engaging, informative, and well-structured content that follows best practices for readability and accuracy.
+    """;
+
+AIAgent writerAgent = client.GetChatClient(deploymentName).CreateAIAgent(WriterAgentInstructions, WriterAgentName);
+
+// Agent that can start content generation workflows using tools
+const string PublisherAgentName = "Publisher";
+const string PublisherAgentInstructions =
+    """
+    You are a publishing agent that can manage content generation workflows.
+    You have access to tools to start, monitor, and raise events for content generation workflows.
+    """;
+
+using IHost app = FunctionsApplication
+    .CreateBuilder(args)
+    .ConfigureFunctionsWebApplication()
+    .ConfigureDurableAgents(options =>
+    {
+        // Add the writer agent used by the orchestration
+        options.AddAIAgent(writerAgent);
+
+        // Define the agent that can start orchestrations from tool calls
+        options.AddAIAgentFactory(PublisherAgentName, sp =>
+        {
+            // Initialize the tools to be used by the agent.
+            Tools publisherTools = new(sp.GetRequiredService<ILogger<Tools>>());
+
+            return client.GetChatClient(deploymentName).CreateAIAgent(
+                instructions: PublisherAgentInstructions,
+                name: PublisherAgentName,
+                services: sp,
+                tools: [
+                    AIFunctionFactory.Create(publisherTools.StartContentGenerationWorkflow),
+                    AIFunctionFactory.Create(publisherTools.GetWorkflowStatusAsync),
+                    AIFunctionFactory.Create(publisherTools.SubmitHumanApprovalAsync),
+                ]);
+        });
+    })
+    .Build();
+
+app.Run();