-
Notifications
You must be signed in to change notification settings - Fork 9
/
TestTraceContextHandler.java
90 lines (74 loc) · 3.52 KB
/
TestTraceContextHandler.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
/*
* Copyright (c) 2017-2018 eBay Inc.
*
* 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.ebay.opentracing.basic;
import io.opentracing.References;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
class TestTraceContextHandler implements TraceContextHandler<TestTraceContext> {
private static final AtomicInteger SERIAL = new AtomicInteger();
@Override
public InternalSpanContext<TestTraceContext> createNew() {
String traceId = "Trace-" + SERIAL.incrementAndGet();
String spanId = "Span-" + SERIAL.incrementAndGet();
TestTraceContext traceContext = new TestTraceContext(traceId, spanId);
return new InternalSpanContext<>(traceContext, new BaggageBuilder().build());
}
@Override
public InternalSpanContext<TestTraceContext> createForContext(Map<String, List<InternalSpanContext<TestTraceContext>>> references) {
List<InternalSpanContext<TestTraceContext>> childOfList = references.get(References.CHILD_OF);
if (childOfList == null) {
childOfList = Collections.emptyList();
}
List<InternalSpanContext<TestTraceContext>> followsFromList = references.get(References.FOLLOWS_FROM);
if (followsFromList == null) {
followsFromList = Collections.emptyList();
}
AtomicReference<String> traceIdRef = new AtomicReference<>();
List<Baggage> baggageList = new ArrayList<>(childOfList.size() + followsFromList.size());
addFromInternalSpanContext(traceIdRef, baggageList, childOfList);
addFromInternalSpanContext(traceIdRef, baggageList, followsFromList);
String traceId = traceIdRef.get();
if (traceId == null) {
traceId = "Trace-" + SERIAL.incrementAndGet();
}
String spanId = "Span-" + SERIAL.incrementAndGet();
TestTraceContext traceContext = new TestTraceContext(traceId, spanId);
Baggage baggage = new BaggageBuilder()
.inheritAll(baggageList)
.build();
return new InternalSpanContext<>(traceContext, baggage);
}
private void addFromInternalSpanContext(
AtomicReference<String> traceIdRef,
List<Baggage> baggageList,
List<InternalSpanContext<TestTraceContext>> list) {
String traceId = traceIdRef.get();
for (InternalSpanContext<TestTraceContext> internalSpanContext : list) {
TestTraceContext traceContext = internalSpanContext.getTraceContext();
Baggage baggage = internalSpanContext.getBaggage();
baggageList.add(baggage);
String parentTraceId = traceContext.getTraceId();
String previousTraceId = traceIdRef.getAndSet(traceId);
if (previousTraceId != null && !previousTraceId.equals(parentTraceId)) {
throw new IllegalStateException("Cannot be a member of multiple trace IDs");
}
}
}
}