97 lines
3.5 KiB
C#
97 lines
3.5 KiB
C#
// <copyright file="OtlpHttpTraceExportClient.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.IO;
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using System.Net;
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using System.Net.Http;
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using System.Net.Http.Headers;
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using System.Runtime.CompilerServices;
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#if NET5_0_OR_GREATER
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using System.Threading;
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#endif
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using System.Threading.Tasks;
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using Google.Protobuf;
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using OtlpCollector = Opentelemetry.Proto.Collector.Trace.V1;
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namespace OpenTelemetry.Exporter.OpenTelemetryProtocol.Implementation.ExportClient
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{
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/// <summary>Class for sending OTLP trace export request over HTTP.</summary>
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internal sealed class OtlpHttpTraceExportClient : BaseOtlpHttpExportClient<OtlpCollector.ExportTraceServiceRequest>
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{
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internal const string MediaContentType = "application/x-protobuf";
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private readonly Uri exportTracesUri;
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public OtlpHttpTraceExportClient(OtlpExporterOptions options, HttpClient httpClient)
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: base(options, httpClient)
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{
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this.exportTracesUri = this.Options.Endpoint;
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}
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protected override HttpRequestMessage CreateHttpRequest(OtlpCollector.ExportTraceServiceRequest exportRequest)
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{
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var request = new HttpRequestMessage(HttpMethod.Post, this.exportTracesUri);
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foreach (var header in this.Headers)
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{
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request.Headers.Add(header.Key, header.Value);
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}
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request.Content = new ExportRequestContent(exportRequest);
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return request;
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}
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internal sealed class ExportRequestContent : HttpContent
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{
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private static readonly MediaTypeHeaderValue ProtobufMediaTypeHeader = new(MediaContentType);
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private readonly OtlpCollector.ExportTraceServiceRequest exportRequest;
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public ExportRequestContent(OtlpCollector.ExportTraceServiceRequest exportRequest)
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{
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this.exportRequest = exportRequest;
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this.Headers.ContentType = ProtobufMediaTypeHeader;
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}
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#if NET5_0_OR_GREATER
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protected override void SerializeToStream(Stream stream, TransportContext context, CancellationToken cancellationToken)
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{
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this.SerializeToStreamInternal(stream);
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}
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#endif
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protected override Task SerializeToStreamAsync(Stream stream, TransportContext context)
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{
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this.SerializeToStreamInternal(stream);
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return Task.CompletedTask;
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}
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protected override bool TryComputeLength(out long length)
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{
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// We can't know the length of the content being pushed to the output stream.
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length = -1;
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return false;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private void SerializeToStreamInternal(Stream stream)
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{
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this.exportRequest.WriteTo(stream);
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}
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}
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}
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}
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