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@@ -1,11 +1,11 @@ |
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/*
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* Copyright 2012 Decebal Suiu
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*
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this work except in compliance with
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* the License. You may obtain a copy of the License in the LICENSE file, or at:
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*
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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@@ -19,6 +19,7 @@ import java.util.ArrayList; |
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Map;
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@@ -42,7 +43,7 @@ import ro.fortsoft.pf4j.util.ZipFileFilter; |
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public class DefaultPluginManager implements PluginManager {
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private static final Logger log = LoggerFactory.getLogger(DefaultPluginManager.class);
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public static final String DEFAULT_PLUGINS_DIRECTORY = "plugins";
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public static final String DEVELOPMENT_PLUGINS_DIRECTORY = "../plugins";
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@@ -52,11 +53,11 @@ public class DefaultPluginManager implements PluginManager { |
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private File pluginsDirectory;
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private ExtensionFinder extensionFinder;
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private PluginDescriptorFinder pluginDescriptorFinder;
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private PluginClasspath pluginClasspath;
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/**
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* A map of plugins this manager is responsible for (the key is the 'pluginId').
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*/
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@@ -81,35 +82,35 @@ public class DefaultPluginManager implements PluginManager { |
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* A list with resolved plugins (resolved dependency).
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*/
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private List<PluginWrapper> resolvedPlugins;
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/**
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* A list with started plugins.
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*/
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private List<PluginWrapper> startedPlugins;
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private List<String> enabledPlugins;
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private List<String> disabledPlugins;
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/**
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* A compound class loader of resolved plugins.
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* A compound class loader of resolved plugins.
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*/
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protected CompoundClassLoader compoundClassLoader;
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/**
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* Cache value for the runtime mode. No need to re-read it because it wont change at
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* runtime.
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*/
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private RuntimeMode runtimeMode;
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/**
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* The plugins directory is supplied by System.getProperty("pf4j.pluginsDir", "plugins").
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*/
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public DefaultPluginManager() {
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this.pluginsDirectory = createPluginsDirectory();
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initialize();
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}
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/**
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* Constructs DefaultPluginManager which the given plugins directory.
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*
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@@ -118,7 +119,7 @@ public class DefaultPluginManager implements PluginManager { |
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*/
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public DefaultPluginManager(File pluginsDirectory) {
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this.pluginsDirectory = pluginsDirectory;
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initialize();
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}
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@@ -145,7 +146,7 @@ public class DefaultPluginManager implements PluginManager { |
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public List<PluginWrapper> getStartedPlugins() {
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return startedPlugins;
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}
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/**
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* Start all active plugins.
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*/
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@@ -163,6 +164,34 @@ public class DefaultPluginManager implements PluginManager { |
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}
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}
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/**
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* Start the specified plugin and it's dependencies.
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*/
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@Override
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public PluginState startPlugin(String pluginId) {
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if (!plugins.containsKey(pluginId)) {
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throw new IllegalArgumentException(String.format("Unknown pluginId %s", pluginId));
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}
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PluginWrapper pluginWrapper = plugins.get(pluginId);
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PluginDescriptor pluginDescriptor = pluginWrapper.getDescriptor();
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if (pluginWrapper.getPluginState().equals(PluginState.STARTED)) {
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log.debug("Already started plugin '{}:{}'", pluginDescriptor.getPluginId(), pluginDescriptor.getVersion());
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return PluginState.STARTED;
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}
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for (PluginDependency dependency : pluginDescriptor.getDependencies()) {
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startPlugin(dependency.getPluginId());
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}
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try {
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log.info("Start plugin '{}:{}'", pluginDescriptor.getPluginId(), pluginDescriptor.getVersion());
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pluginWrapper.getPlugin().start();
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pluginWrapper.setPluginState(PluginState.STARTED);
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startedPlugins.add(pluginWrapper);
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} catch (PluginException e) {
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log.error(e.getMessage(), e);
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}
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return pluginWrapper.getPluginState();
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}
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/**
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* Stop all active plugins.
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*/
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@@ -170,17 +199,49 @@ public class DefaultPluginManager implements PluginManager { |
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public void stopPlugins() {
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// stop started plugins in reverse order
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Collections.reverse(startedPlugins);
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for (PluginWrapper pluginWrapper : startedPlugins) {
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Iterator<PluginWrapper> itr = startedPlugins.iterator();
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while (itr.hasNext()) {
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PluginWrapper pluginWrapper = itr.next();
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PluginDescriptor pluginDescriptor = pluginWrapper.getDescriptor();
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try {
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log.info("Stop plugin '{}'", pluginWrapper.getDescriptor().getPluginId());
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log.info("Stop plugin '{}:{}'", pluginDescriptor.getPluginId(), pluginDescriptor.getVersion());
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pluginWrapper.getPlugin().stop();
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pluginWrapper.setPluginState(PluginState.STOPPED);
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itr.remove();
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} catch (PluginException e) {
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log.error(e.getMessage(), e);
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}
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}
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}
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/**
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* Stop the specified plugin and it's dependencies.
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*/
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@Override
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public PluginState stopPlugin(String pluginId) {
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if (!plugins.containsKey(pluginId)) {
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throw new IllegalArgumentException(String.format("Unknown pluginId %s", pluginId));
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}
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PluginWrapper pluginWrapper = plugins.get(pluginId);
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PluginDescriptor pluginDescriptor = pluginWrapper.getDescriptor();
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if (pluginWrapper.getPluginState().equals(PluginState.STOPPED)) {
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log.debug("Already stopped plugin '{}:{}'", pluginDescriptor.getPluginId(), pluginDescriptor.getVersion());
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return PluginState.STOPPED;
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}
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for (PluginDependency dependency : pluginDescriptor.getDependencies()) {
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stopPlugin(dependency.getPluginId());
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}
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try {
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log.info("Stop plugin '{}:{}'", pluginDescriptor.getPluginId(), pluginDescriptor.getVersion());
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pluginWrapper.getPlugin().stop();
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pluginWrapper.setPluginState(PluginState.STOPPED);
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startedPlugins.remove(pluginWrapper);
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} catch (PluginException e) {
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log.error(e.getMessage(), e);
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}
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return pluginWrapper.getPluginState();
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}
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/**
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* Load plugins.
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*/
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@@ -248,24 +309,24 @@ public class DefaultPluginManager implements PluginManager { |
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for (ExtensionWrapper<T> extensionWrapper : extensionsWrapper) {
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extensions.add(extensionWrapper.getInstance());
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}
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return extensions;
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}
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@Override
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public RuntimeMode getRuntimeMode() {
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if (runtimeMode == null) {
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// retrieves the runtime mode from system
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// retrieves the runtime mode from system
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String modeAsString = System.getProperty("pf4j.mode", RuntimeMode.DEPLOYMENT.toString());
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runtimeMode = RuntimeMode.byName(modeAsString);
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log.info("PF4J runtime mode is '{}'", runtimeMode);
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}
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return runtimeMode;
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}
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/**
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* Retrieves the {@link PluginWrapper} that loaded the given class 'clazz'.
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*/
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@@ -276,63 +337,63 @@ public class DefaultPluginManager implements PluginManager { |
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return plugin;
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}
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}
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return null;
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}
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/**
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* Add the possibility to override the PluginDescriptorFinder.
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* By default if getRuntimeMode() returns RuntimeMode.DEVELOPMENT than a
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* PropertiesPluginDescriptorFinder is returned else this method returns
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* Add the possibility to override the PluginDescriptorFinder.
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* By default if getRuntimeMode() returns RuntimeMode.DEVELOPMENT than a
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* PropertiesPluginDescriptorFinder is returned else this method returns
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* DefaultPluginDescriptorFinder.
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*/
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protected PluginDescriptorFinder createPluginDescriptorFinder() {
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if (RuntimeMode.DEVELOPMENT.equals(getRuntimeMode())) {
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return new PropertiesPluginDescriptorFinder();
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}
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return new DefaultPluginDescriptorFinder(pluginClasspath);
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}
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/**
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* Add the possibility to override the ExtensionFinder.
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* Add the possibility to override the ExtensionFinder.
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*/
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protected ExtensionFinder createExtensionFinder() {
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return new DefaultExtensionFinder(compoundClassLoader);
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}
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/**
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* Add the possibility to override the PluginClassPath.
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* By default if getRuntimeMode() returns RuntimeMode.DEVELOPMENT than a
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* DevelopmentPluginClasspath is returned else this method returns
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* Add the possibility to override the PluginClassPath.
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* By default if getRuntimeMode() returns RuntimeMode.DEVELOPMENT than a
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* DevelopmentPluginClasspath is returned else this method returns
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* PluginClasspath.
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*/
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protected PluginClasspath createPluginClasspath() {
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if (RuntimeMode.DEVELOPMENT.equals(getRuntimeMode())) {
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return new DevelopmentPluginClasspath();
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}
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return new PluginClasspath();
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}
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protected boolean isPluginDisabled(String pluginId) {
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if (enabledPlugins.isEmpty()) {
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return disabledPlugins.contains(pluginId);
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}
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return !enabledPlugins.contains(pluginId);
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}
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protected FileFilter createHiddenPluginFilter() {
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return new HiddenFilter();
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}
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/**
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* Add the possibility to override the plugins directory.
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* If a "pf4j.pluginsDir" system property is defined than this method returns
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* that directory.
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* If getRuntimeMode() returns RuntimeMode.DEVELOPMENT than a
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* DEVELOPMENT_PLUGINS_DIRECTORY ("../plugins") is returned else this method returns
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* If getRuntimeMode() returns RuntimeMode.DEVELOPMENT than a
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* DEVELOPMENT_PLUGINS_DIRECTORY ("../plugins") is returned else this method returns
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* DEFAULT_PLUGINS_DIRECTORY ("plugins").
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* @return
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*/
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@@ -345,10 +406,10 @@ public class DefaultPluginManager implements PluginManager { |
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pluginsDir = DEFAULT_PLUGINS_DIRECTORY;
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}
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}
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return new File(pluginsDir);
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}
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private void initialize() {
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plugins = new HashMap<String, PluginWrapper>();
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pluginClassLoaders = new HashMap<String, PluginClassLoader>();
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@@ -358,7 +419,7 @@ public class DefaultPluginManager implements PluginManager { |
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startedPlugins = new ArrayList<PluginWrapper>();
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disabledPlugins = new ArrayList<String>();
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compoundClassLoader = new CompoundClassLoader();
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pluginClasspath = createPluginClasspath();
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pluginDescriptorFinder = createPluginDescriptorFinder();
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extensionFinder = createExtensionFinder();
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@@ -367,7 +428,7 @@ public class DefaultPluginManager implements PluginManager { |
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// create a list with plugin identifiers that should be only accepted by this manager (whitelist from plugins/enabled.txt file)
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enabledPlugins = FileUtils.readLines(new File(pluginsDirectory, "enabled.txt"), true);
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log.info("Enabled plugins: {}", enabledPlugins);
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// create a list with plugin identifiers that should not be accepted by this manager (blacklist from plugins/disabled.txt file)
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disabledPlugins = FileUtils.readLines(new File(pluginsDirectory, "disabled.txt"), true);
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log.info("Disabled plugins: {}", disabledPlugins);
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@@ -406,7 +467,7 @@ public class DefaultPluginManager implements PluginManager { |
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PluginLoader pluginLoader = new PluginLoader(this, pluginDescriptor, pluginDirectory, pluginClasspath);
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pluginLoader.load();
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log.debug("Loaded plugin '{}'", pluginPath);
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// create the plugin wrapper
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log.debug("Creating wrapper for plugin '{}'", pluginPath);
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PluginWrapper pluginWrapper = new PluginWrapper(pluginDescriptor, pluginPath, pluginLoader.getPluginClassLoader());
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@@ -456,5 +517,5 @@ public class DefaultPluginManager implements PluginManager { |
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log.info("Plugin '{}' resolved", pluginWrapper.getDescriptor().getPluginId());
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}
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}
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}
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