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| 1 | +import * as grpc from '@grpc/grpc-js'; |
| 2 | +import { SpanDao } from '../dao/Trace'; |
| 3 | +import { SocketManager } from '../trpc/socket'; |
| 4 | +import { opentelemetry } from './opentelemetry/proto/collector/trace/v1/trace_service'; |
| 5 | +import * as traceProto from './opentelemetry/proto/trace/v1/trace'; |
| 6 | +import { SpanProcessor } from './processor'; |
| 7 | + |
| 8 | +/** |
| 9 | + * gRPC server implementation for OpenTelemetry TraceService |
| 10 | + */ |
| 11 | +export class OtelGrpcServer { |
| 12 | + private server: grpc.Server; |
| 13 | + private port: number; |
| 14 | + |
| 15 | + constructor(port: number = 4317) { |
| 16 | + this.port = port; |
| 17 | + this.server = new grpc.Server(); |
| 18 | + this.setupService(); |
| 19 | + } |
| 20 | + |
| 21 | + private setupService(): void { |
| 22 | + // Create TraceService implementation |
| 23 | + const traceServiceImpl = { |
| 24 | + Export: this.handleExport.bind(this), |
| 25 | + }; |
| 26 | + |
| 27 | + // Add the service to the server |
| 28 | + this.server.addService( |
| 29 | + opentelemetry.proto.collector.trace.v1 |
| 30 | + .UnimplementedTraceServiceService.definition, |
| 31 | + traceServiceImpl, |
| 32 | + ); |
| 33 | + } |
| 34 | + |
| 35 | + /** |
| 36 | + * Handle Export RPC call |
| 37 | + */ |
| 38 | + private async handleExport( |
| 39 | + call: grpc.ServerUnaryCall< |
| 40 | + opentelemetry.proto.collector.trace.v1.ExportTraceServiceRequest, |
| 41 | + opentelemetry.proto.collector.trace.v1.ExportTraceServiceResponse |
| 42 | + >, |
| 43 | + callback: grpc.sendUnaryData<opentelemetry.proto.collector.trace.v1.ExportTraceServiceResponse>, |
| 44 | + ): Promise<void> { |
| 45 | + try { |
| 46 | + console.debug('[OTEL gRPC] Received ExportTraceServiceRequest'); |
| 47 | + |
| 48 | + const request = call.request; |
| 49 | + const resourceSpans = request.resource_spans || []; |
| 50 | + |
| 51 | + if (resourceSpans.length === 0) { |
| 52 | + console.warn('[OTEL gRPC] Empty resource_spans in request'); |
| 53 | + const response = |
| 54 | + new opentelemetry.proto.collector.trace.v1.ExportTraceServiceResponse(); |
| 55 | + callback(null, response); |
| 56 | + return; |
| 57 | + } |
| 58 | + |
| 59 | + // Convert ResourceSpans to plain objects for processing |
| 60 | + const resourceSpansArray = resourceSpans.map( |
| 61 | + (rs: traceProto.opentelemetry.proto.trace.v1.ResourceSpans) => |
| 62 | + rs.toObject(), |
| 63 | + ); |
| 64 | + |
| 65 | + // Process spans using the existing processor |
| 66 | + const spans = |
| 67 | + SpanProcessor.batchProcessOTLPTraces(resourceSpansArray); |
| 68 | + |
| 69 | + // Save spans to the database |
| 70 | + await SpanDao.saveSpans(spans); |
| 71 | + |
| 72 | + // Broadcast spans to the run room |
| 73 | + SocketManager.broadcastSpanDataToRunRoom(spans); |
| 74 | + |
| 75 | + console.debug( |
| 76 | + `[OTEL gRPC] Successfully processed ${spans.length} spans`, |
| 77 | + ); |
| 78 | + |
| 79 | + // Create success response |
| 80 | + const response = |
| 81 | + new opentelemetry.proto.collector.trace.v1.ExportTraceServiceResponse(); |
| 82 | + callback(null, response); |
| 83 | + } catch (error: unknown) { |
| 84 | + console.error('[OTEL gRPC] Error processing traces:', error); |
| 85 | + const errorMessage = |
| 86 | + error instanceof Error ? error.message : 'Unknown error'; |
| 87 | + |
| 88 | + const response = |
| 89 | + new opentelemetry.proto.collector.trace.v1.ExportTraceServiceResponse(); |
| 90 | + const partialSuccess = |
| 91 | + new opentelemetry.proto.collector.trace.v1.ExportTracePartialSuccess(); |
| 92 | + partialSuccess.error_message = errorMessage; |
| 93 | + response.partial_success = partialSuccess; |
| 94 | + |
| 95 | + callback( |
| 96 | + { |
| 97 | + code: grpc.status.INTERNAL, |
| 98 | + details: errorMessage, |
| 99 | + metadata: new grpc.Metadata(), |
| 100 | + }, |
| 101 | + response, |
| 102 | + ); |
| 103 | + } |
| 104 | + } |
| 105 | + |
| 106 | + /** |
| 107 | + * Start the gRPC server |
| 108 | + */ |
| 109 | + public start(): Promise<void> { |
| 110 | + return new Promise((resolve, reject) => { |
| 111 | + this.server.bindAsync( |
| 112 | + `0.0.0.0:${this.port}`, |
| 113 | + grpc.ServerCredentials.createInsecure(), |
| 114 | + (error: Error | null, port: number) => { |
| 115 | + if (error) { |
| 116 | + console.error( |
| 117 | + `[OTEL gRPC] Failed to start server on port ${this.port}:`, |
| 118 | + error, |
| 119 | + ); |
| 120 | + reject(error); |
| 121 | + return; |
| 122 | + } |
| 123 | + |
| 124 | + this.server.start(); |
| 125 | + console.log( |
| 126 | + `[OTEL gRPC] Server started on port ${port} (0.0.0.0:${this.port})`, |
| 127 | + ); |
| 128 | + resolve(); |
| 129 | + }, |
| 130 | + ); |
| 131 | + }); |
| 132 | + } |
| 133 | + |
| 134 | + /** |
| 135 | + * Stop the gRPC server |
| 136 | + */ |
| 137 | + public stop(): Promise<void> { |
| 138 | + return new Promise((resolve, reject) => { |
| 139 | + this.server.tryShutdown((error?: Error) => { |
| 140 | + if (error) { |
| 141 | + console.error( |
| 142 | + '[OTEL gRPC] Error shutting down server:', |
| 143 | + error, |
| 144 | + ); |
| 145 | + reject(error); |
| 146 | + } else { |
| 147 | + console.log('[OTEL gRPC] Server stopped'); |
| 148 | + resolve(); |
| 149 | + } |
| 150 | + }); |
| 151 | + }); |
| 152 | + } |
| 153 | + |
| 154 | + /** |
| 155 | + * Force shutdown the gRPC server |
| 156 | + */ |
| 157 | + public forceShutdown(): void { |
| 158 | + this.server.forceShutdown(); |
| 159 | + console.log('[OTEL gRPC] Server force shutdown'); |
| 160 | + } |
| 161 | +} |
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