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ParsingContext.java
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ParsingContext.java
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/*
* Copyright (c) 2010, 2024 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019 Payara Foundation and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.hk2.classmodel.reflect;
import org.glassfish.hk2.classmodel.reflect.impl.ModelClassVisitor;
import org.glassfish.hk2.classmodel.reflect.impl.TypeBuilder;
import org.glassfish.hk2.classmodel.reflect.impl.TypesCtr;
import org.glassfish.hk2.classmodel.reflect.impl.TypesImpl;
import org.glassfish.hk2.classmodel.reflect.util.CommonModelRegistry;
import org.glassfish.hk2.classmodel.reflect.util.ParsingConfig;
import org.glassfish.hk2.classmodel.reflect.util.ResourceLocator;
import org.objectweb.asm.ClassVisitor;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.locks.ReentrantLock;
import java.net.URI;
import java.util.logging.Logger;
/**
* Parsing context for parsing jars and directories and getting a classmodel back
*
* @author Jerome Dochez
*/
public class ParsingContext {
/**
* Context builder
*/
public static class Builder {
Logger logger=Logger.getLogger("org.glassfish.hk2.classmodel");
ExecutorService executorService=null;
ArchiveSelector archiveSelector=null;
ParsingConfig config=null;
ResourceLocator locator=null;
/**
* Returns the configured or default logger for the class-model library.
*
* @return the current logger associated with this builder, either
* set using {@link #logger(java.util.logging.Logger)} method, either
* using the default logger for this library.
*/
public Logger logger() {
return logger;
}
/**
* Sets the logger to be used during the parsing activity.
*
* @param logger a logger instance
* @return itself
*/
public Builder logger(Logger logger) {
this.logger = logger;
return this;
}
/**
* Sets the executor service to be used to spawn threads during the
* parsing activity. The parsing activity is an asynchronous process
* that can choose to spawn threads to handle sub part of the handling
* process.
*
* @param service the executor service to be used during the parsing
* activity
* @return itself
*/
public Builder executorService(ExecutorService service) {
this.executorService = service;
return this;
}
/**
* Sets the archive selector that can selects which jar should be parsed
* during the parsing activity. This is particularly useful when the
* parser is configured to parse an entire directory of jars but only
* needs to actually parse those jars depending on some environmental
* condition or if the jar shows a particular stigma (like a jar entry
* existence).
*
* @param selector the archive selector.
* @return itself
*/
public Builder archiveSelector(ArchiveSelector selector) {
this.archiveSelector = selector;
return this;
}
/**
* Sets the resource locator that can be used to load and parse extra
* types that were referenced during the parsing but could not be parsed
* due to their absence from the input archive set. The parser will call
* the {@link ResourceLocator} to give a chance to the caller to selectively
* add such unvisited types to the parsing activity
*
* @param locator a resource locator instance
* @return itself
*/
public Builder locator(ResourceLocator locator) {
this.locator = locator;
return this;
}
/**
* Sets the parsing config that can be used to select which types should
* be exhaustively visited (fields + methods visits) or not.
*
* @param config the config instance
* @return itself
*/
public Builder config(ParsingConfig config) {
this.config = config;
return this;
}
/**
* Build the final ParsingContext with the provided configuration.
*
* @return the @{link ParsingContext} instance
*/
public ParsingContext build() {
return new ParsingContext(this);
}
}
final TypesCtr types = new TypesCtr();
final ExecutorService executorService;
final ArchiveSelector archiveSelector;
final Logger logger;
final ParsingConfig config;
final ResourceLocator locator;
final ReentrantLock lock = new ReentrantLock();
private ParsingContext(Builder builder) {
// Runtime runtime = Runtime.getRuntime();
this.executorService = builder.executorService;
this.archiveSelector = builder.archiveSelector;
this.logger = builder.logger;
this.locator = builder.locator;
this.config = builder.config!=null?builder.config:new ParsingConfig() {
final Set<String> emptyList = Collections.emptySet();
@Override
public Set<String> getAnnotationsOfInterest() {
return emptyList;
}
@Override
public Set<String> getTypesOfInterest() {
return emptyList;
}
@Override
public boolean modelUnAnnotatedMembers() {
return false;
}
};
}
Map<URI, TypeBuilder> builders = new HashMap<URI, TypeBuilder>();
public TypeBuilder getTypeBuilder(URI definingURI) {
lock.lock();
try {
TypeBuilder builder = builders.get(definingURI);
if (builder==null) {
builder = new TypesImpl(types, definingURI);
builders.put(definingURI, builder);
}
return builder;
} finally {
lock.unlock();
}
}
/**
* Return the holder instance of all the visited types. This should only
* be called once the {@link org.glassfish.hk2.classmodel.reflect.Parser#awaitTermination()}
* has returned.
*
* @return the visited types.
*/
public Types getTypes() {
return types;
}
public ResourceLocator getLocator() {
return locator != null ? locator :
CommonModelRegistry.getInstance().canLoadResources() ? CommonModelRegistry.getInstance() : null;
}
public ClassVisitor getClassVisitor(URI uri, String entryName) {
return new ModelClassVisitor(this, uri, entryName, false);
}
public ClassVisitor getClassVisitor(URI uri, String entryName, boolean isApplicationClass) {
return new ModelClassVisitor(this, uri, entryName, isApplicationClass);
}
public ParsingConfig getConfig() {
return config;
}
}