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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) [2018-2020] Payara Foundation and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://github.com/payara/Payara/blob/master/LICENSE.txt
* See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at glassfish/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* The Payara Foundation designates this particular file as subject to the "Classpath"
* exception as provided by the Payara Foundation in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
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*/
package fish.payara.opentracing.span;
import fish.payara.notification.requesttracing.RequestTraceSpan;
import fish.payara.notification.requesttracing.RequestTraceSpanLog;
import fish.payara.nucleus.requesttracing.RequestTracingService;
import io.opentracing.SpanContext;
import io.opentracing.tag.Tag;
import java.time.Instant;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.TimeUnit;
import javax.annotation.PostConstruct;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.internal.api.Globals;
/**
* Implementation of the OpenTracing Span class. These Spans get recorded by the Request Tracing Service.
*
* @author Andrew Pielage
*/
public class Span extends RequestTraceSpan implements io.opentracing.Span {
private final String applicationName;
/**
* Constructor that creates a RequestTraceSpan object and sets the application name that this Span was created from.
*
* @param operationName The name of the span
* @param applicationName The name of the application that this Span was created from
*/
public Span(String operationName, String applicationName) {
super(operationName);
this.applicationName = applicationName;
}
/**
* Returns the name of the application that this Span was created from.
*
* @return The name of the application that this Span was created from.
*/
public String getApplicationName() {
return applicationName;
}
@Override
public io.opentracing.SpanContext context() {
return (SpanContext) getSpanContext();
}
@Override
public io.opentracing.Span setTag(String tagName, String tagValue) {
// Pass through to the Request Tracing Service
addSpanTag(tagName, tagValue);
return this;
}
@Override
public io.opentracing.Span setTag(String tagName, boolean tagValue) {
// Pass through to the Request Tracing Service
addSpanTag(tagName, Boolean.toString(tagValue));
return this;
}
@Override
public io.opentracing.Span setTag(String tagName, Number tagValue) {
// Pass through to the Request Tracing Service
addSpanTag(tagName, String.valueOf(tagValue));
return this;
}
@Override
public io.opentracing.Span setTag(Tag tag, T tagValue) {
// Pass through to the Request Tracing Service
addSpanTag(tag, String.valueOf(tagValue));
return this;
}
@Override
public io.opentracing.Span log(Map map) {
// Create a RequestTracingSpanLog, add all of the map entries, and pass it through to the Request Tracing Service
RequestTraceSpanLog spanLog = new RequestTraceSpanLog();
for (Map.Entry entry : map.entrySet()) {
spanLog.addLogEntry(entry.getKey(), String.valueOf(entry.getValue()));
}
addSpanLog(spanLog);
return this;
}
@Override
public io.opentracing.Span log(long timestampMicroseconds, Map map) {
// Create a RequestTracingSpanLog, add all of the map entries, and pass it through to the Request Tracing Service
RequestTraceSpanLog spanLog = new RequestTraceSpanLog(convertTimestampMicrosToTimestampMillis(timestampMicroseconds));
for (Map.Entry entry : map.entrySet()) {
spanLog.addLogEntry(entry.getKey(), String.valueOf(entry.getValue()));
}
addSpanLog(spanLog);
return this;
}
@Override
public io.opentracing.Span log(String logEvent) {
// Create a RequestTracingSpanLog and pass it through to the Request Tracing Service
RequestTraceSpanLog spanLog = new RequestTraceSpanLog(logEvent);
addSpanLog(spanLog);
return this;
}
@Override
public io.opentracing.Span log(long timestampMicroseconds, String logEvent) {
// Create a RequestTracingSpanLog and pass it through to the Request Tracing Service
RequestTraceSpanLog spanLog = new RequestTraceSpanLog(
convertTimestampMicrosToTimestampMillis(timestampMicroseconds),
logEvent);
addSpanLog(spanLog);
return this;
}
@Override
public io.opentracing.Span setBaggageItem(String key, String value) {
// Pass through to the Request Tracing Service
getSpanContext().addBaggageItem(key, value);
return this;
}
@Override
public String getBaggageItem(String key) {
// Pass through to the Request Tracing Service
return getSpanContext().getBaggageItems().get(key);
}
@Override
public io.opentracing.Span setOperationName(String operationName) {
// Pass through to the Request Tracing Service
setEventName(operationName);
return this;
}
@Override
public void finish() {
// Pass through to the Request Tracing Service
RequestTracingService requestTracingService = getRequestTracingService();
if (requestTracingService != null) {
requestTracingService.traceSpan(this);
}
}
@Override
public void finish(long finishMicros) {
// Convert the timestamp to that required by the Request Tracing Service
long finishMillis = convertTimestampMicrosToTimestampMillis(finishMicros);
// Pass through to the Request Tracing Service
RequestTracingService requestTracingService = getRequestTracingService();
if (requestTracingService != null) {
requestTracingService.traceSpan(this, finishMillis);
}
}
/**
* Sets the start time of the Span.
*
* @param startTimeMicros The start time of the Span in Microseconds
*/
public void setStartTime(long startTimeMicros) {
// Convert the timestamp to that required by the Request Tracing Service and pass through
super.setStartInstant(Instant.ofEpochMilli(convertTimestampMicrosToTimestampMillis(startTimeMicros)));
}
/**
* Helper method that converts a Microsecond timestamp into a Millisecond one.
*
* @param timestampMicroseconds The microseconds timestamp to convert
* @return The timestamp in Milliseconds
*/
private long convertTimestampMicrosToTimestampMillis(long timestampMicroseconds) {
return TimeUnit.MILLISECONDS.convert(timestampMicroseconds, TimeUnit.MICROSECONDS);
}
/**
* Helper method that gets the Request Tracing Service if this instance does not have it.
*/
private RequestTracingService getRequestTracingService() {
RequestTracingService requestTracingService = null;
ServiceLocator serviceLocator = Globals.getDefaultBaseServiceLocator();
if (serviceLocator != null) {
ServiceHandle serviceHandle = serviceLocator.getServiceHandle(
RequestTracingService.class);
if (serviceHandle != null && serviceHandle.isActive()) {
requestTracingService = serviceHandle.getService();
}
}
return requestTracingService;
}
}