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• nestjs-jaeger-tracing-master
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      • index.ts
      • packet.utils.ts
      • tracing.serializer.ts
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      • inject.decorator.ts
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      • except-tracing.decorator.ts
      • tracing-context.decorator.ts
    • interceptors
      • index.ts
      • tracing.interceptor.ts
    • index.ts
    • tracer
      • tracer-provider.ts
      • index.ts
    • tracing.module.ts
    • interfaces
      • exporter-config.interfaces.ts
      • tracing-module-options.interface.ts
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      • tracing.interface.ts
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      • tracing-module-async-options.interface.ts
    • constants.ts
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import { createParamDecorator, ExecutionContext } from '@nestjs/common';
import { GqlContextType, GqlExecutionContext } from '@nestjs/graphql';

import { TracingData, TracingObject } from '../interfaces';

export const Tracing = createParamDecorator(
  (key: keyof TracingData, context: ExecutionContext) => {
    const contextType = context.getType<GqlContextType>();
    let tracingData: TracingData;
    if (contextType === 'graphql') {
      const ctx = GqlExecutionContext.create(context);
      tracingData = ctx.getContext<TracingObject>().tracing;
    }
    if (contextType === 'http') {
      const ctx = context.switchToHttp();
      tracingData = ctx.getRequest<TracingObject>().tracing;
    }
    if (contextType === 'rpc') {
      const ctx = context.switchToRpc();
      tracingData = ctx.getContext<TracingObject>().tracing;
    }
    return key ? tracingData && tracingData[key] : tracingData;
  },
);