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/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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.jboss.modules;
import java.lang.instrument.ClassFileTransformer;
import java.security.AllPermission;
import java.security.PermissionCollection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.jboss.modules.filter.PathFilters;
/**
* A {@code Module} specification which is used by a {@code ModuleLoader} to define new modules.
*
* @apiviz.exclude
*
* @author David M. Lloyd
*/
public abstract class ModuleSpec {
private final String name;
ModuleSpec(final String name) {
this.name = name;
}
/**
* Get a builder for a new module specification.
*
* @param moduleIdentifier the module identifier
* @return the builder
* @deprecated Use {@link #build(String)} instead.
*/
@Deprecated
public static Builder build(final ModuleIdentifier moduleIdentifier) {
return build(moduleIdentifier.toString());
}
/**
* Get a builder for a new module specification.
*
* @param name the module name
* @return the builder
*/
public static Builder build(final String name) {
return build(name, true);
}
static Builder build(final String name, final boolean addBaseDep) {
if (name == null) {
throw new IllegalArgumentException("name is null");
}
final Builder builder = new Builder() {
private String mainClass;
private AssertionSetting assertionSetting = AssertionSetting.INHERIT;
private final List resourceLoaders = new ArrayList(0);
private final List dependencies = new ArrayList();
private final Map properties = new LinkedHashMap(0);
private final Map> provides = new HashMap<>(0);
private LocalLoader fallbackLoader;
private ModuleClassLoaderFactory moduleClassLoaderFactory;
private ClassTransformer classFileTransformer;
private PermissionCollection permissionCollection;
private Version version;
@Override
public Builder setFallbackLoader(final LocalLoader fallbackLoader) {
this.fallbackLoader = fallbackLoader;
return this;
}
@Override
public Builder setMainClass(final String mainClass) {
this.mainClass = mainClass;
return this;
}
@Override
public Builder setAssertionSetting(final AssertionSetting assertionSetting) {
this.assertionSetting = assertionSetting == null ? AssertionSetting.INHERIT : assertionSetting;
return this;
}
@Override
public Builder addDependency(final DependencySpec dependencySpec) {
dependencies.add(dependencySpec);
return this;
}
@Override
public Builder addResourceRoot(final ResourceLoaderSpec resourceLoader) {
resourceLoaders.add(resourceLoader);
return this;
}
@Override
public Builder setModuleClassLoaderFactory(final ModuleClassLoaderFactory moduleClassLoaderFactory) {
this.moduleClassLoaderFactory = moduleClassLoaderFactory;
return this;
}
@Deprecated
@Override
public Builder setClassFileTransformer(final ClassFileTransformer classFileTransformer) {
this.classFileTransformer = new JLIClassTransformer(classFileTransformer);
return this;
}
@Override
public Builder setClassFileTransformer(final ClassTransformer transformer) {
this.classFileTransformer = transformer;
return this;
}
@Override
public Builder addProperty(final String name, final String value) {
properties.put(name, value);
return this;
}
@Override
public Builder setPermissionCollection(PermissionCollection permissionCollection) {
this.permissionCollection = permissionCollection;
return this;
}
@Override
public Builder setVersion(Version version) {
this.version = version;
return this;
}
@Override
public Builder addProvide(final String serviceTypeName, final String serviceImplClassName) {
List infos = provides.get(serviceTypeName);
if (infos == null) {
provides.put(serviceTypeName, infos = new ArrayList<>(1));
}
infos.add(serviceImplClassName);
return this;
}
@Override
public Version getVersion() {
return version;
}
@Override
public ModuleSpec create() {
final List resourceLoaders;
if (provides.isEmpty()) {
resourceLoaders = this.resourceLoaders;
} else {
resourceLoaders = new ArrayList<>(this.resourceLoaders.size() + 1);
resourceLoaders.add(new ResourceLoaderSpec(
ResourceLoaders.createServiceResourceLoader(provides), PathFilters.acceptAll()
));
resourceLoaders.addAll(this.resourceLoaders);
}
return new ConcreteModuleSpec(name, mainClass, assertionSetting, resourceLoaders.toArray(ResourceLoaderSpec.NO_RESOURCE_LOADERS), dependencies.toArray(dependencies.toArray(DependencySpec.NO_DEPENDENCIES)), fallbackLoader, moduleClassLoaderFactory, classFileTransformer, properties, permissionCollection, version);
}
@Override
public String getName() {
return name;
}
};
if (addBaseDep) builder.addDependency(ModuleDependencySpec.JAVA_BASE);
return builder;
}
/**
* Get a builder for a new module alias specification.
*
* @param moduleIdentifier the module identifier
* @param aliasTarget the alias target identifier
* @return the builder
* @deprecated Use {@link #buildAlias(String, String)} instead.
*/
@Deprecated
public static AliasBuilder buildAlias(final ModuleIdentifier moduleIdentifier, final ModuleIdentifier aliasTarget) {
return buildAlias(moduleIdentifier.toString(), aliasTarget.toString());
}
/**
* Get a builder for a new module alias specification.
*
* @param name the module name
* @param aliasName the alias target name
* @return the builder
*/
public static AliasBuilder buildAlias(final String name, final String aliasName) {
if (name == null) {
throw new IllegalArgumentException("name is null");
}
if (aliasName == null) {
throw new IllegalArgumentException("aliasName is null");
}
return new AliasBuilder() {
public ModuleSpec create() {
return new AliasModuleSpec(name, aliasName);
}
public String getName() {
return null;
}
public String getAliasName() {
return null;
}
};
}
/**
* Get the module identifier for the module which is specified by this object.
*
* @return the module identifier
* @deprecated Use {@link #getName()} instead.
*/
public ModuleIdentifier getModuleIdentifier() {
return ModuleIdentifier.fromString(name);
}
/**
* Get the module name for the module which is specified by this object.
*
* @return the module name
*/
public String getName() {
return name;
}
/**
* A builder for new concrete module specifications.
*
* @apiviz.exclude
*/
public interface Builder {
/**
* Set the main class for this module, or {@code null} for none.
*
* @param mainClass the main class name
* @return this builder
*/
ModuleSpec.Builder setMainClass(String mainClass);
/**
* Set the default assertion setting for this module.
*
* @param assertionSetting the assertion setting
* @return this builder
*/
ModuleSpec.Builder setAssertionSetting(AssertionSetting assertionSetting);
/**
* Add a dependency specification.
*
* @param dependencySpec the dependency specification
* @return this builder
*/
ModuleSpec.Builder addDependency(DependencySpec dependencySpec);
/**
* Add a local resource root, from which this module will load class definitions and resources.
*
* @param resourceLoader the resource loader for the root
* @return this builder
*/
ModuleSpec.Builder addResourceRoot(ResourceLoaderSpec resourceLoader);
/**
* Create the module specification from this builder.
*
* @return the module specification
*/
ModuleSpec create();
/**
* Get the identifier of the module being defined by this builder.
*
* @return the module identifier
* @deprecated use {@link #getName()} instead
*/
@Deprecated
default ModuleIdentifier getIdentifier() {
return ModuleIdentifier.fromString(getName());
}
/**
* Get the name of the module being defined by this builder.
*
* @return the module name
*/
String getName();
/**
* Sets a "fall-back" loader that will attempt to load a class if all other mechanisms
* are unsuccessful.
*
* @param fallbackLoader the fall-back loader
* @return this builder
*/
ModuleSpec.Builder setFallbackLoader(final LocalLoader fallbackLoader);
/**
* Set the module class loader factory to use to create the module class loader for this module.
*
* @param moduleClassLoaderFactory the factory
* @return this builder
*/
ModuleSpec.Builder setModuleClassLoaderFactory(ModuleClassLoaderFactory moduleClassLoaderFactory);
/**
* Set the class file transformer to use for this module.
*
* @param classFileTransformer the class file transformer
* @return this builder
* @deprecated Use {@link #setClassFileTransformer(ClassTransformer)} instead.
*/
@Deprecated
ModuleSpec.Builder setClassFileTransformer(ClassFileTransformer classFileTransformer);
/**
* Set the class file transformer function to use for this module. If the given function returns {@code null}
* then no transformation will take place. The function may accept and return a direct or heap byte buffer.
*
* @param transformer the class file transformer (must not be {@code null})
* @return this builder
*/
ModuleSpec.Builder setClassFileTransformer(ClassTransformer transformer);
/**
* Add a property to this module specification.
*
* @param name the property name
* @param value the property value
* @return this builder
*/
ModuleSpec.Builder addProperty(String name, String value);
/**
* Set the permission collection for this module specification. If none is given, a collection implying
* {@link AllPermission} is assumed.
*
* @param permissionCollection the permission collection
* @return this builder
*/
ModuleSpec.Builder setPermissionCollection(PermissionCollection permissionCollection);
/**
* Set the version for this module specification, or {@code null} to set no version for this module.
*
* @param version the module version
* @return this builder
*/
ModuleSpec.Builder setVersion(Version version);
/**
* Declare that this module provides a service with the given type name with the implementation class with
* the given class name.
*
* @param serviceTypeName the service type name (must not be {@code null})
* @param serviceImplClassName the service implementation class name (must not be {@code null})
* @return this builder
*/
ModuleSpec.Builder addProvide(String serviceTypeName, String serviceImplClassName);
/**
* Get the version for this module specification, or {@code null} if none was set.
*
* @return the currently-set version, or {@code null} if none was set
*/
Version getVersion();
}
/**
* A builder for new alias module specifications.
*/
public interface AliasBuilder {
/**
* Create the module specification from this builder.
*
* @return the module specification
*/
ModuleSpec create();
/**
* Get the identifier of the module being defined by this builder.
*
* @return the module identifier
* @deprecated Use {@link #getName()} instead.
*/
@Deprecated
default ModuleIdentifier getIdentifier() {
return ModuleIdentifier.fromString(getName());
}
/**
* Get the name of the module being defined by this builder.
*
* @return the module name
*/
String getName();
/**
* Get the identifier of the module being referenced by this builder.
*
* @return the module identifier
* @deprecated Use {@link #getAliasName()} instead.
*/
@Deprecated
default ModuleIdentifier getAliasTarget() {
return ModuleIdentifier.fromString(getAliasName());
}
/**
* Get the name of the module being referenced by this builder.
*
* @return the module name
*/
String getAliasName();
}
static final class ServiceInfo {
private final String serviceTypeName;
private final String implClassName;
ServiceInfo(final String serviceTypeName, final String implClassName) {
this.serviceTypeName = serviceTypeName;
this.implClassName = implClassName;
}
String getServiceTypeName() {
return serviceTypeName;
}
String getImplClassName() {
return implClassName;
}
}
}
