com.google.cloud.trace.v1.util.TraceBuffer Maven / Gradle / Ivy
// Copyright 2016 Google Inc. All rights reserved.
//
// Licensed 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 com.google.cloud.trace.v1.util;
import com.google.devtools.cloudtrace.v1.Trace;
import com.google.devtools.cloudtrace.v1.TraceSpan;
import com.google.devtools.cloudtrace.v1.Traces;
import java.util.HashMap;
import java.util.Map;
/**
* A class that buffers trace messages. Trace messages added to this buffer are combined with
* existing trace messages when they contain the same trace identifiers, by combining the spans of
* the matching trace messages.
*
* @see Traces
* @see Trace
*/
public class TraceBuffer {
private final HashMap traceMap;
/**
* Creates a trace buffer.
*/
public TraceBuffer() {
this.traceMap = new HashMap();
}
/**
* Adds a trace message to this trace buffer.
*
* @param trace a trace message to add this trace buffer.
*/
public void put(Trace trace) {
TraceKey traceKey = new TraceKey(trace.getProjectId(), trace.getTraceId());
SpanBuffer spans = traceMap.get(traceKey);
if (spans == null) {
spans = new SpanBuffer();
traceMap.put(traceKey, spans);
}
for (TraceSpan span : trace.getSpansList()) {
spans.put(span);
}
}
/**
* Returns all of the trace messages in this trace buffer.
*
* @return an iterable containing the trace messages in this trace buffer.
*/
public Traces getTraces() {
Traces.Builder tracesBuilder = Traces.newBuilder();
for (Map.Entry entry : traceMap.entrySet()) {
Trace.Builder traceBuilder = Trace.newBuilder()
.setProjectId(entry.getKey().getProjectId())
.setTraceId(entry.getKey().getTraceId());
for (TraceSpan.Builder spanBuilder : entry.getValue().getSpans()) {
traceBuilder.addSpans(spanBuilder);
}
tracesBuilder.addTraces(traceBuilder);
}
return tracesBuilder.build();
}
/**
* Returns true if the TraceBuffer is empty.
*/
public boolean isEmpty() {
return traceMap.isEmpty();
}
}