constructor()

in packages/synthetics-sdk-api/src/auto_instrumentation.ts [89:135]
38 lines of code
3 McCabe index (conditional complexity)

  constructor(args: { googleAuthOptions?: GoogleAuthOptions } = {}) {
    this.authArgs = args.googleAuthOptions || {};

    this.provider = new NodeTracerProvider({
      sampler: new AlwaysOnSampler(),
    });
    const exporter = new TraceExporter();
    this.provider.addSpanProcessor(new BatchSpanProcessor(exporter));
    this.provider.register();

    // add node auto instrumentation
    registerInstrumentations({
      instrumentations: [
        getNodeAutoInstrumentations({
          '@opentelemetry/instrumentation-winston': {
            logHook: (span: Span, record: Record<string, string | boolean>) => {
              // If the auto instrumentation has detected a project id, convert
              // otel fields that are automatically added to the record to use
              // structured logging fields instead.
              if (this.gcpProjectId) {
                record[LOGGING_TRACE_KEY] = `projects/${
                  this.gcpProjectId
                }/traces/${span.spanContext().traceId}`;
                record[LOGGING_SPAN_KEY] = span.spanContext().spanId;
                record[LOGGING_SAMPLED_KEY] =
                  span.spanContext().traceFlags === TraceFlags.SAMPLED;
                record[LOGGING_SEVERITY_KEY] =
                  levelToSeverityMap[String(record.level)] ?? 'DEFAULT';
                delete record['span_id'];
                delete record['trace_flags'];
                delete record['level'];
                delete record['trace_id'];
              }
            },
          },
        }),
      ],
    });

    // Require dependencies after instrumentation is registered,
    // otherwise they wont be instrumented.
    const winston = require('winston');
    const logger = winston.createLogger({
      transports: [new winston.transports.Console()],
    });
    this.logger = logger;
  }