JaegerTracingManager.java
/*
* Copyright (c) 2019, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you under the Apache License,
* Version 2.0 (the "License"); you may not use this file except
* in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.synapse.aspects.flow.statistics.opentracing.management;
import io.jaegertracing.Configuration;
import io.jaegertracing.internal.JaegerTracer;
import org.apache.synapse.aspects.flow.statistics.opentracing.management.handling.span.JaegerSpanHandler;
import org.apache.synapse.aspects.flow.statistics.opentracing.management.scoping.TracingScopeManager;
import java.io.BufferedReader;
import java.io.FileReader;
/**
* Coordinates the Jaeger span handler with the tracer.
*/
public class JaegerTracingManager implements OpenTracingManager {
private static final String SERVICE_NAME = "wso2-synapse";
/**
* The common tracer object.
*/
private JaegerTracer tracer;
/**
* Controls Jaeger spans.
*/
private JaegerSpanHandler handler;
public JaegerTracingManager(Configuration.SamplerConfiguration sampler,
Configuration.ReporterConfiguration reporter) {
initializeTracer(sampler, reporter);
resolveHandler();
}
/**
* Initializes the tracer object.
*
* @param sampler Jaeger sampler configuration.
* @param reporter Jaeger reporter configuration.
*/
private void initializeTracer(Configuration.SamplerConfiguration sampler,
Configuration.ReporterConfiguration reporter) {
String serviceName = getServiceName();
this.tracer = new Configuration(serviceName)
.withSampler(sampler)
.withReporter(reporter)
.getTracer();
}
@Override
public void resolveHandler() {
this.handler = new JaegerSpanHandler(tracer, new TracingScopeManager());
}
@Override
public JaegerSpanHandler getHandler() {
return this.handler;
}
private static String getServiceName() {
return SERVICE_NAME;
}
}