-
Notifications
You must be signed in to change notification settings - Fork 7
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Merge pull request #109 from ligangty/master
Remove weft dependency
- Loading branch information
Showing
12 changed files
with
306 additions
and
29 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <project xmlns="http://maven.apache.org/POM/4.0.0" | ||
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | ||
| xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> | ||
| <modelVersion>4.0.0</modelVersion> | ||
| <parent> | ||
| <groupId>org.commonjava.util</groupId> | ||
| <artifactId>o11yphant</artifactId> | ||
| <version>1.9.2-SNAPSHOT</version> | ||
| </parent> | ||
|
|
||
| <artifactId>o11yphant-common</artifactId> | ||
|
|
||
| </project> |
275 changes: 275 additions & 0 deletions
275
common/src/main/java/org/commonjava/o11yphant/common/thread/ThreadContext.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,275 @@ | ||
| /** | ||
| * Copyright (C) 2013-2022 Red Hat, Inc. (https://github.com/Commonjava/weft) | ||
| * | ||
| * 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 org.commonjava.o11yphant.common.thread; | ||
|
|
||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
| import org.slf4j.MDC; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
| import java.util.function.BiConsumer; | ||
| import java.util.function.BiFunction; | ||
| import java.util.function.Consumer; | ||
| import java.util.function.Function; | ||
|
|
||
| /** | ||
| * (Copied from weft: https://github.com/Commonjava/weft) | ||
| * | ||
| * This {@link ThreadContext} keeps a count of the number of threads referencing it, and can run finalization logic | ||
| * when that number hits 0. | ||
| * | ||
| * Created by jdcasey on 1/3/17. | ||
| */ | ||
| public class ThreadContext | ||
| implements Map<String, Object> | ||
| { | ||
| private static ThreadLocal<ThreadContext> THREAD_LOCAL = new ThreadLocal<>(); | ||
|
|
||
| private final Map<String, Object> contextMap = new ConcurrentHashMap<>(); | ||
|
|
||
| private Map<String, String> mdcMap; // mapped diagnostic context | ||
|
|
||
| private int refs = 1; | ||
|
|
||
| private List<Consumer<ThreadContext>> finalizers = new ArrayList<>(); | ||
|
|
||
| public static ThreadContext getContext( boolean create ) | ||
| { | ||
| ThreadContext threadContext = THREAD_LOCAL.get(); | ||
| if ( threadContext == null && create ) | ||
| { | ||
| threadContext = new ThreadContext(); | ||
| THREAD_LOCAL.set( threadContext ); | ||
| } | ||
|
|
||
| if ( threadContext != null ) | ||
| { | ||
| threadContext.mdcMap = MDC.getCopyOfContextMap(); | ||
| } | ||
|
|
||
| return threadContext; | ||
| } | ||
|
|
||
| public static ThreadContext setContext( ThreadContext ctx ) | ||
| { | ||
| ThreadContext oldCtx = swapContext( ctx ); | ||
| if ( ctx != null && ctx.mdcMap != null ) | ||
| { | ||
| MDC.setContextMap(ctx.mdcMap); | ||
| } | ||
| return oldCtx; | ||
| } | ||
|
|
||
| private static ThreadContext swapContext( final ThreadContext ctx ) | ||
| { | ||
| ThreadContext oldCtx = THREAD_LOCAL.get(); | ||
| if ( oldCtx != null ) | ||
| { | ||
| Logger logger = LoggerFactory.getLogger( ThreadContext.class ); | ||
| oldCtx.refs--; | ||
| logger.trace( "context refs: {}", oldCtx.refs ); | ||
| oldCtx.runFinalizersIfDone(); | ||
| } | ||
|
|
||
| if ( ctx != null ) | ||
| { | ||
| THREAD_LOCAL.set( ctx ); | ||
| ctx.refs++; | ||
| } | ||
| else | ||
| { | ||
| THREAD_LOCAL.remove(); | ||
| } | ||
|
|
||
| return oldCtx; | ||
| } | ||
|
|
||
| /** | ||
| * Provide some finalizer logic to handle the scenario where the number of "live" threads referencing this context | ||
| * drops to 0. Before this happens, any contextual information in this ThreadContext may be needed by running threads, | ||
| * and it's not safe to clean up. However, since the context may contain {@link java.io.Closeable} instances and | ||
| * the like, it's important to have some point where they will be cleaned up. | ||
| * @since 1.5 | ||
| * @param finalizer | ||
| */ | ||
| public synchronized void registerFinalizer( Consumer<ThreadContext> finalizer ) | ||
| { | ||
| if ( !this.finalizers.contains( finalizer ) ) | ||
| { | ||
| Logger logger = LoggerFactory.getLogger( getClass() ); | ||
| logger.debug( "Registering finalizer: {} on ThreadContext: {}", finalizer, this ); | ||
| this.finalizers.add( finalizer ); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * If the thread reference count on this context drops to zero, run any finalization logic that might be registered. | ||
| */ | ||
| private synchronized void runFinalizersIfDone() | ||
| { | ||
| Logger logger = LoggerFactory.getLogger( getClass() ); | ||
| if ( refs < 1 && finalizers != null ) | ||
| { | ||
| logger.debug( "Running finalizers for ThreadContext: {}", this ); | ||
| finalizers.forEach( c->{ | ||
| if ( c != null ) | ||
| { | ||
| logger.debug( "Running finalizer: {} for ThreadContext: {}", c, this ); | ||
|
|
||
| try | ||
| { | ||
| c.accept( this ); | ||
| } | ||
| catch ( Throwable t ) | ||
| { | ||
| logger.error( "Caught error while running finalizer: " + c + " on ThreadContext: " + this, t ); | ||
| } | ||
|
|
||
| logger.trace( "Finalizer: {} done for ThreadContext: {}", c, this ); | ||
| } | ||
| } ); | ||
| } | ||
| } | ||
|
|
||
| public static void clearContext() | ||
| { | ||
| swapContext( null ); | ||
| MDC.clear(); | ||
| } | ||
|
|
||
| private ThreadContext(){} | ||
|
|
||
| public int size() | ||
| { | ||
| return contextMap.size(); | ||
| } | ||
|
|
||
| public boolean isEmpty() | ||
| { | ||
| return contextMap.isEmpty(); | ||
| } | ||
|
|
||
| public void putAll( Map<? extends String, ?> map ) | ||
| { | ||
| contextMap.putAll( map ); | ||
| } | ||
|
|
||
| public Collection<Object> values() | ||
| { | ||
| return contextMap.values(); | ||
| } | ||
|
|
||
| public Object merge( String key, Object value, BiFunction<? super Object, ? super Object, ?> remappingFunction ) | ||
| { | ||
| return contextMap.merge( key, value, remappingFunction ); | ||
| } | ||
|
|
||
| public Set<String> keySet() | ||
| { | ||
| return contextMap.keySet(); | ||
| } | ||
|
|
||
| public void forEach( BiConsumer<? super String, ? super Object> action ) | ||
| { | ||
| contextMap.forEach( action ); | ||
| } | ||
|
|
||
| public Object computeIfPresent( String key, BiFunction<? super String, ? super Object, ?> remappingFunction ) | ||
| { | ||
| return contextMap.computeIfPresent( key, remappingFunction ); | ||
| } | ||
|
|
||
| public void clear() | ||
| { | ||
| contextMap.clear(); | ||
| } | ||
|
|
||
| public boolean containsValue( Object o ) | ||
| { | ||
| return contextMap.containsValue( o ); | ||
| } | ||
|
|
||
| public Object put( String s, Object o ) | ||
| { | ||
| return contextMap.put( s, o ); | ||
| } | ||
|
|
||
| public void replaceAll( BiFunction<? super String, ? super Object, ?> function ) | ||
| { | ||
| contextMap.replaceAll( function ); | ||
| } | ||
|
|
||
| public Object get( Object o ) | ||
| { | ||
| return contextMap.get( o ); | ||
| } | ||
|
|
||
| public boolean containsKey( Object o ) | ||
| { | ||
| return contextMap.containsKey( o ); | ||
| } | ||
|
|
||
| public Set<Entry<String, Object>> entrySet() | ||
| { | ||
| return contextMap.entrySet(); | ||
| } | ||
|
|
||
| public boolean replace( String key, Object oldValue, Object newValue ) | ||
| { | ||
| return contextMap.replace( key, oldValue, newValue ); | ||
| } | ||
|
|
||
| public Object computeIfAbsent( String key, Function<? super String, ?> mappingFunction ) | ||
| { | ||
| return contextMap.computeIfAbsent( key, mappingFunction ); | ||
| } | ||
|
|
||
| public Object compute( String key, BiFunction<? super String, ? super Object, ?> remappingFunction ) | ||
| { | ||
| return contextMap.compute( key, remappingFunction ); | ||
| } | ||
|
|
||
| public Object putIfAbsent( String key, Object value ) | ||
| { | ||
| return contextMap.putIfAbsent( key, value ); | ||
| } | ||
|
|
||
| public Object remove( Object o ) | ||
| { | ||
| return contextMap.remove( o ); | ||
| } | ||
|
|
||
| public Object getOrDefault( Object key, Object defaultValue ) | ||
| { | ||
| return contextMap.getOrDefault( key, defaultValue ); | ||
| } | ||
|
|
||
| public boolean remove( Object key, Object value ) | ||
| { | ||
| return contextMap.remove( key, value ); | ||
| } | ||
|
|
||
| public Object replace( String key, Object value ) | ||
| { | ||
| return contextMap.replace( key, value ); | ||
| } | ||
|
|
||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.