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体验新版 GitCode,发现更多精彩内容 >>
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提交
d2f52f28
编写于
7月 18, 2019
作者:
wu-sheng
提交者:
GitHub
7月 18, 2019
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差异文件
Make #finish more stable in async APIs (#3115)
* Make finish more stable in async APIs
上级
5b039e97
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
43 addition
and
35 deletion
+43
-35
apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/TracingContext.java
...che/skywalking/apm/agent/core/context/TracingContext.java
+43
-35
未找到文件。
apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/context/TracingContext.java
浏览文件 @
d2f52f28
...
...
@@ -18,14 +18,27 @@
package
org.apache.skywalking.apm.agent.core.context
;
import
java.util.*
;
import
java.util.LinkedList
;
import
java.util.List
;
import
java.util.concurrent.atomic.AtomicInteger
;
import
java.util.concurrent.locks.ReentrantLock
;
import
org.apache.skywalking.apm.agent.core.boot.ServiceManager
;
import
org.apache.skywalking.apm.agent.core.conf.Config
;
import
org.apache.skywalking.apm.agent.core.context.trace.*
;
import
org.apache.skywalking.apm.agent.core.dictionary.*
;
import
org.apache.skywalking.apm.agent.core.logging.api.*
;
import
org.apache.skywalking.apm.agent.core.context.trace.AbstractSpan
;
import
org.apache.skywalking.apm.agent.core.context.trace.AbstractTracingSpan
;
import
org.apache.skywalking.apm.agent.core.context.trace.EntrySpan
;
import
org.apache.skywalking.apm.agent.core.context.trace.ExitSpan
;
import
org.apache.skywalking.apm.agent.core.context.trace.LocalSpan
;
import
org.apache.skywalking.apm.agent.core.context.trace.NoopExitSpan
;
import
org.apache.skywalking.apm.agent.core.context.trace.NoopSpan
;
import
org.apache.skywalking.apm.agent.core.context.trace.TraceSegment
;
import
org.apache.skywalking.apm.agent.core.context.trace.TraceSegmentRef
;
import
org.apache.skywalking.apm.agent.core.context.trace.WithPeerInfo
;
import
org.apache.skywalking.apm.agent.core.dictionary.DictionaryManager
;
import
org.apache.skywalking.apm.agent.core.dictionary.DictionaryUtil
;
import
org.apache.skywalking.apm.agent.core.dictionary.PossibleFound
;
import
org.apache.skywalking.apm.agent.core.logging.api.ILog
;
import
org.apache.skywalking.apm.agent.core.logging.api.LogManager
;
import
org.apache.skywalking.apm.agent.core.sampling.SamplingService
;
import
org.apache.skywalking.apm.util.StringUtil
;
...
...
@@ -76,6 +89,8 @@ public class TracingContext implements AbstractTracerContext {
private
volatile
boolean
isRunningInAsyncMode
;
private
volatile
ReentrantLock
asyncFinishLock
;
private
volatile
boolean
running
;
/**
* Initialize all fields with default value.
*/
...
...
@@ -84,6 +99,7 @@ public class TracingContext implements AbstractTracerContext {
this
.
spanIdGenerator
=
0
;
samplingService
=
ServiceManager
.
INSTANCE
.
findService
(
SamplingService
.
class
);
isRunningInAsyncMode
=
false
;
running
=
true
;
}
/**
...
...
@@ -402,9 +418,7 @@ public class TracingContext implements AbstractTracerContext {
throw
new
IllegalStateException
(
"Stopping the unexpected span = "
+
span
);
}
if
(
checkFinishConditions
())
{
finish
();
}
finish
();
return
activeSpanStack
.
isEmpty
();
}
...
...
@@ -425,46 +439,40 @@ public class TracingContext implements AbstractTracerContext {
@Override
public
void
asyncStop
(
AsyncSpan
span
)
{
asyncSpanCounter
.
addAndGet
(-
1
);
if
(
checkFinishConditions
())
{
finish
();
}
finish
();
}
private
boolean
checkFinishConditions
()
{
/**
* Finish this context, and notify all {@link TracingContextListener}s, managed by {@link
* TracingContext.ListenerManager}
*/
private
void
finish
()
{
if
(
isRunningInAsyncMode
)
{
asyncFinishLock
.
lock
();
}
try
{
if
(
activeSpanStack
.
isEmpty
()
&&
(!
isRunningInAsyncMode
||
asyncSpanCounter
.
get
()
==
0
))
{
return
true
;
if
(
activeSpanStack
.
isEmpty
()
&&
running
&&
(!
isRunningInAsyncMode
||
asyncSpanCounter
.
get
()
==
0
))
{
TraceSegment
finishedSegment
=
segment
.
finish
(
isLimitMechanismWorking
());
/**
* Recheck the segment if the segment contains only one span.
* Because in the runtime, can't sure this segment is part of distributed trace.
*
* @see {@link #createSpan(String, long, boolean)}
*/
if
(!
segment
.
hasRef
()
&&
segment
.
isSingleSpanSegment
())
{
if
(!
samplingService
.
trySampling
())
{
finishedSegment
.
setIgnore
(
true
);
}
}
TracingContext
.
ListenerManager
.
notifyFinish
(
finishedSegment
);
running
=
false
;
}
}
finally
{
if
(
isRunningInAsyncMode
)
{
asyncFinishLock
.
unlock
();
}
}
return
false
;
}
/**
* Finish this context, and notify all {@link TracingContextListener}s, managed by {@link
* TracingContext.ListenerManager}
*/
private
void
finish
()
{
TraceSegment
finishedSegment
=
segment
.
finish
(
isLimitMechanismWorking
());
/**
* Recheck the segment if the segment contains only one span.
* Because in the runtime, can't sure this segment is part of distributed trace.
*
* @see {@link #createSpan(String, long, boolean)}
*/
if
(!
segment
.
hasRef
()
&&
segment
.
isSingleSpanSegment
())
{
if
(!
samplingService
.
trySampling
())
{
finishedSegment
.
setIgnore
(
true
);
}
}
TracingContext
.
ListenerManager
.
notifyFinish
(
finishedSegment
);
}
/**
...
...
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