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70 lines
2.3 KiB
C#

// Copyright (c) Microsoft. All rights reserved.
using System.Text.Json;
using A2A;
using Microsoft.SemanticKernel;
using Microsoft.SemanticKernel.Agents;
using Microsoft.SemanticKernel.Agents.A2A;
namespace GettingStarted.A2A;
/// <summary>
/// This example demonstrates similarity between using <see cref="A2AAgent"/>
/// and other agent types.
/// </summary>
public class Step01_A2AAgent(ITestOutputHelper output) : BaseAgentsTest(output)
{
[Fact]
public async Task UseA2AAgent()
{
// Create an A2A agent instance
var url = TestConfiguration.A2A.AgentUrl;
using var httpClient = CreateHttpClient();
var client = new A2AClient(url, httpClient);
var cardResolver = new A2ACardResolver(url, httpClient);
var agentCard = await cardResolver.GetAgentCardAsync();
Console.WriteLine(JsonSerializer.Serialize(agentCard, s_jsonSerializerOptions));
var agent = new A2AAgent(client, agentCard);
// Invoke the A2A agent
await foreach (AgentResponseItem<ChatMessageContent> response in agent.InvokeAsync("List the latest invoices for Contoso?"))
{
this.WriteAgentChatMessage(response);
}
}
[Fact]
public async Task UseA2AAgentStreaming()
{
// Create an A2A agent instance
var url = TestConfiguration.A2A.AgentUrl;
using var httpClient = CreateHttpClient();
var client = new A2AClient(url, httpClient);
var cardResolver = new A2ACardResolver(url, httpClient);
var agentCard = await cardResolver.GetAgentCardAsync();
Console.WriteLine(JsonSerializer.Serialize(agentCard, s_jsonSerializerOptions));
var agent = new A2AAgent(client, agentCard);
// Invoke the A2A agent
var responseItems = agent.InvokeStreamingAsync("List the latest invoices for Contoso?");
await WriteAgentStreamMessageAsync(responseItems);
}
#region private
private bool EnableLogging { get; set; } = false;
private HttpClient CreateHttpClient()
{
if (this.EnableLogging)
{
var handler = new LoggingHandler(new HttpClientHandler(), this.Output);
return new HttpClient(handler);
}
return new HttpClient();
}
private static readonly JsonSerializerOptions s_jsonSerializerOptions = new() { WriteIndented = true };
#endregion
}