all files / src/reporters/ composite_reporter.js

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// @flow
// Copyright (c) 2016 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
 
import Span from '../span.js';
 
export default class CompositeReporter {
    _reporters: Array<Reporter>
 
    constructor(reporters: Array<Reporter>) {
        this._reporters = reporters;
    }
 
    name(): string {
        return 'CompositeReporter';
    }
 
    report(span: Span): void {
        this._reporters.forEach((r) => {
            r.report(span);
        });
    }
 
    compositeCallback(callback: ?Function): ?Function {
        let count = 0;
        return () => {
            count++;
            if (count >= this._reporters.length) {
                if (callback) {
                    callback();
                }
            }
        }
    }
 
    close(callback: ?Function): void {
        let modifiedCallback: ?Function  = this.compositeCallback(callback);
        this._reporters.forEach((r) => {
            r.close(modifiedCallback);
        });
    }
 
    setProcess(serviceName: string, tags: Array<Tag>): void {
        this._reporters.forEach((r) => {
            if (r.setProcess) {
                r.setProcess(serviceName, tags);
            }
        });
    }
}