100 lines
3.3 KiB
C#
100 lines
3.3 KiB
C#
// <copyright file="Program.cs" company="OpenTelemetry Authors">
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// Copyright The OpenTelemetry Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// </copyright>
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Net.Http;
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using System.Text;
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using System.Threading.Tasks;
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using OpenTracing.Propagation;
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using OpenTracing.Util;
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namespace Examples.ConsoleApp;
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internal class Program
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{
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private static async Task<int> Main()
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{
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Console.WriteLine("Ensure right version of DiagnosticSource is installed");
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Console.WriteLine(typeof(ActivitySource).Assembly.FullName);
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await OpenTracingLibrary.Wrapper.WithOpenTracingSpanAsync("client", RunAsync);
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return 0;
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}
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private static async Task RunAsync()
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{
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using var client = new HttpClient();
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await HttpGet("https://www.example.com/default-handler");
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await HttpGet("http://127.0.0.1:8080/api/mongo");
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await HttpGet("http://127.0.0.1:8080/api/redis");
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await HttpGet("http://127.0.0.1:8080/api/metrics");
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const string requestUrl = "https://www.example.com/";
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var request = new HttpRequestMessage
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{
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RequestUri = new Uri(requestUrl),
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Method = HttpMethod.Post,
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Content = new StringContent(string.Empty, Encoding.UTF8),
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};
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var tracer = GlobalTracer.Instance;
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using (var scope = tracer.BuildSpan("Client POST " + request.RequestUri)
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.WithTag("span.kind", "client")
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.StartActive())
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{
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var contextPropagationHeaders = new Dictionary<string, string>();
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var contextCarrier = new TextMapInjectAdapter(contextPropagationHeaders);
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tracer.Inject(scope.Span.Context, BuiltinFormats.TextMap, contextCarrier);
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foreach (var kvp in contextPropagationHeaders)
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{
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request.Headers.Add(kvp.Key, kvp.Value);
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}
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try
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{
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using var response = await client.SendAsync(request);
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await response.Content.ReadAsStringAsync();
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}
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catch (HttpRequestException e)
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{
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Console.WriteLine($"HttpRequestException occurred while calling {requestUrl}, {e}");
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}
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scope.Span.SetTag("custom.opentracing", "manual span");
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}
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}
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private static async Task HttpGet(string url)
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{
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try
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{
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using var client = new HttpClient();
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Console.WriteLine($"Calling {url}");
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await client.GetAsync(url);
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Console.WriteLine($"Called {url}");
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}
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catch (HttpRequestException e)
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{
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Console.WriteLine($"HttpRequestException occurred while calling {url}, {e}");
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}
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}
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}
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