This is an automated email from the ASF dual-hosted git repository. tomekr pushed a commit to branch startupmanager in repository https://gitbox.apache.org/repos/asf/sling-whiteboard.git
commit a6ef6f50c8458d3b5445c6c1340fafe3a1564e89 Author: Tomek Rękawek <tom...@apache.org> AuthorDate: Thu Nov 22 16:43:04 2018 +0100 startup manager bundle contribution --- startupmanager/.gitignore | 17 ++ startupmanager/CODE_OF_CONDUCT.md | 22 +++ startupmanager/CONTRIBUTING.md | 24 +++ startupmanager/LICENSE | 202 +++++++++++++++++++++ startupmanager/README.md | 5 + startupmanager/pom.xml | 78 ++++++++ .../sling/launchpad/startupmanager/Activator.java | 95 ++++++++++ .../startupmanager/MBeanStartupListener.java | 101 +++++++++++ .../startupmanager/StartupListenerTracker.java | 122 +++++++++++++ 9 files changed, 666 insertions(+) diff --git a/startupmanager/.gitignore b/startupmanager/.gitignore new file mode 100644 index 0000000..5b783ed --- /dev/null +++ b/startupmanager/.gitignore @@ -0,0 +1,17 @@ +/target +.idea +.classpath +.metadata +.project +.settings +.externalToolBuilders +maven-eclipse.xml +*.swp +*.iml +*.ipr +*.iws +*.bak +.vlt +.DS_Store +jcr.log +atlassian-ide-plugin.xml diff --git a/startupmanager/CODE_OF_CONDUCT.md b/startupmanager/CODE_OF_CONDUCT.md new file mode 100644 index 0000000..0fa18e5 --- /dev/null +++ b/startupmanager/CODE_OF_CONDUCT.md @@ -0,0 +1,22 @@ +<!--/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + ~ Licensed to the Apache Software Foundation (ASF) under one + ~ or more contributor license agreements. See the NOTICE file + ~ distributed with this work for additional information + ~ regarding copyright ownership. The ASF licenses this file + ~ to you 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. + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/--> +Apache Software Foundation Code of Conduct +==== + +Being an Apache project, Apache Sling adheres to the Apache Software Foundation's [Code of Conduct](https://www.apache.org/foundation/policies/conduct.html). diff --git a/startupmanager/CONTRIBUTING.md b/startupmanager/CONTRIBUTING.md new file mode 100644 index 0000000..ac82a1a --- /dev/null +++ b/startupmanager/CONTRIBUTING.md @@ -0,0 +1,24 @@ +<!--/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + ~ Licensed to the Apache Software Foundation (ASF) under one + ~ or more contributor license agreements. See the NOTICE file + ~ distributed with this work for additional information + ~ regarding copyright ownership. 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See the NOTICE file + distributed with this work for additional information + regarding copyright ownership. The ASF licenses this file + to you 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. +--> +<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/maven-v4_0_0.xsd"> + + <modelVersion>4.0.0</modelVersion> + + <parent> + <groupId>org.apache.sling</groupId> + <artifactId>sling</artifactId> + <version>26</version> + <relativePath /> + </parent> + + <artifactId>org.apache.sling.launchpad.startupmanager</artifactId> + <version>1.0.0-SNAPSHOT</version> + <packaging>bundle</packaging> + + <name>Apache Sling Launchpad Startup Manager</name> + <description>This module manages the StartupListeners</description> + + <properties> + <sling.java.version>7</sling.java.version> + </properties> + + <build> + <plugins> + <plugin> + <groupId>org.apache.felix</groupId> + <artifactId>maven-bundle-plugin</artifactId> + <extensions>true</extensions> + <configuration> + <instructions> + <Bundle-Activator> + org.apache.sling.launchpad.startupmanager.Activator + </Bundle-Activator> + </instructions> + </configuration> + </plugin> + </plugins> + </build> + + <dependencies> + <dependency> + <groupId>org.osgi</groupId> + <artifactId>osgi.core</artifactId> + <version>6.0.0</version> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.apache.sling</groupId> + <artifactId>org.apache.sling.launchpad.api</artifactId> + <version>1.2.0</version> + <scope>provided</scope> + </dependency> + <dependency> + <groupId>org.slf4j</groupId> + <artifactId>slf4j-api</artifactId> + <scope>provided</scope> + </dependency> + </dependencies> +</project> diff --git a/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/Activator.java b/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/Activator.java new file mode 100644 index 0000000..bddfc1a --- /dev/null +++ b/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/Activator.java @@ -0,0 +1,95 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you 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.apache.sling.launchpad.startupmanager; + +import org.apache.sling.launchpad.api.StartupListener; +import org.osgi.framework.BundleActivator; +import org.osgi.framework.BundleContext; +import org.osgi.framework.ServiceRegistration; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.management.Attribute; +import javax.management.AttributeList; +import javax.management.MBeanServer; +import javax.management.MalformedObjectNameException; +import javax.management.ObjectName; +import java.lang.management.ManagementFactory; +import java.util.Hashtable; + +public class Activator implements BundleActivator { + + private static final Logger log = LoggerFactory.getLogger(Activator.class); + + private ServiceRegistration<?> mbeanServerReg; + + private ServiceRegistration<StartupListener> mbeanStartupListenerReg; + + private StartupListenerTracker startupListenerTracker; + + @Override + public void start(final BundleContext bundleContext) { + startupListenerTracker = new StartupListenerTracker(bundleContext); + mbeanServerReg = registerMBeanServer(bundleContext); + try { + mbeanStartupListenerReg = bundleContext.registerService(StartupListener.class, new MBeanStartupListener(), new Hashtable<String, Object>()); + } catch (MalformedObjectNameException e) { + log.error("Can't instantiate MBeanStartupListener"); + } + } + + @Override + public void stop(final BundleContext context) { + if (mbeanStartupListenerReg != null) { + mbeanStartupListenerReg.unregister(); + mbeanStartupListenerReg = null; + } + if (mbeanServerReg != null) { + mbeanServerReg.unregister(); + mbeanServerReg = null; + } + if (startupListenerTracker != null) { + startupListenerTracker.close(); + startupListenerTracker = null; + } + } + + private ServiceRegistration<?> registerMBeanServer(final BundleContext bundleContext) { + // register the platform MBeanServer + MBeanServer platformMBeanServer = ManagementFactory.getPlatformMBeanServer(); + Hashtable<String, Object> mbeanProps = new Hashtable<String, Object>(); + try { + ObjectName beanName = ObjectName.getInstance("JMImplementation:type=MBeanServerDelegate"); + AttributeList attrs = platformMBeanServer.getAttributes(beanName, + new String[] { "MBeanServerId", "SpecificationName", + "SpecificationVersion", "SpecificationVendor", + "ImplementationName", "ImplementationVersion", + "ImplementationVendor" }); + for (Object object : attrs) { + Attribute attr = (Attribute) object; + if (attr.getValue() != null) { + mbeanProps.put(attr.getName(), attr.getValue().toString()); + } + } + } catch (Exception je) { + log.error("start: Cannot set service properties of Platform MBeanServer service, registering without", je); + } + return bundleContext.registerService(MBeanServer.class.getName(), platformMBeanServer, mbeanProps); + } +} \ No newline at end of file diff --git a/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/MBeanStartupListener.java b/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/MBeanStartupListener.java new file mode 100644 index 0000000..a2f6fc4 --- /dev/null +++ b/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/MBeanStartupListener.java @@ -0,0 +1,101 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.sling.launchpad.startupmanager; + +import java.lang.management.ManagementFactory; + +import javax.management.MBeanServer; +import javax.management.MalformedObjectNameException; +import javax.management.ObjectName; + +import org.apache.sling.launchpad.api.StartupListener; +import org.apache.sling.launchpad.api.StartupMode; + +/** + * The startup listener is listening for startup events. + * + * It notifies a JMX MBean when the startup is completed and about the + * progress. + */ +public class MBeanStartupListener + implements StartupListener { + + /** The launcher mbean name. */ + private static final String NAME_LAUNCHER = "org.apache.sling.launchpad:type=Launcher"; + + /** JMX Server. */ + private final MBeanServer jmxServer; + + /** Name of the launcher mbean. */ + private final ObjectName launcherName; + + /** Marker if the mbean is available. */ + private boolean available; + + /** + * Create a new MBean helper. + * @throws MalformedObjectNameException if the format of the object name does not correspond to a valid ObjectName. + */ + public MBeanStartupListener() throws MalformedObjectNameException { + this.launcherName = new ObjectName(NAME_LAUNCHER); + this.jmxServer = ManagementFactory.getPlatformMBeanServer(); + // we check for the launcher mbean + try { + this.jmxServer.getMBeanInfo(launcherName); + available = true; + } catch (final Exception ignore) { + available = false; + // ignore + } + } + + /** + * @see org.apache.sling.launchpad.api.StartupListener#inform(org.apache.sling.launchpad.api.StartupMode, boolean) + */ + @Override + public void inform(StartupMode mode, boolean finished) { + // nothing to do + } + + /** + * @see org.apache.sling.launchpad.api.StartupListener#startupFinished(org.apache.sling.launchpad.api.StartupMode) + */ + @Override + public void startupFinished(StartupMode mode) { + if ( this.available ) { + try { + this.jmxServer.invoke(launcherName, "startupFinished", null, null); + } catch (final Exception e) { + // we ignore this + } + } + } + + /** + * @see org.apache.sling.launchpad.api.StartupListener#startupProgress(float) + */ + @Override + public void startupProgress(float ratio) { + if ( this.available ) { + try { + this.jmxServer.invoke(launcherName, "startupProgress", new Object[]{ratio}, new String[]{Float.class.getName()}); + } catch (final Exception e) { + // we ignore this + } + } + } +} \ No newline at end of file diff --git a/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/StartupListenerTracker.java b/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/StartupListenerTracker.java new file mode 100644 index 0000000..532acf6 --- /dev/null +++ b/startupmanager/src/main/java/org/apache/sling/launchpad/startupmanager/StartupListenerTracker.java @@ -0,0 +1,122 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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.apache.sling.launchpad.startupmanager; + +import org.apache.sling.launchpad.api.StartupHandler; +import org.apache.sling.launchpad.api.StartupListener; +import org.apache.sling.launchpad.api.StartupMode; +import org.osgi.framework.Bundle; +import org.osgi.framework.BundleContext; +import org.osgi.framework.BundleEvent; +import org.osgi.framework.BundleListener; +import org.osgi.framework.FrameworkEvent; +import org.osgi.framework.FrameworkListener; +import org.osgi.framework.ServiceReference; +import org.osgi.util.tracker.ServiceTracker; +import org.osgi.util.tracker.ServiceTrackerCustomizer; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +public class StartupListenerTracker implements FrameworkListener, BundleListener { + + private static final Logger log = LoggerFactory.getLogger(StartupListenerTracker.class); + + private final StartupMode startupMode; + + private final BundleContext bundleContext; + + private final ServiceTracker<StartupListener, StartupListener> tracker; + + private volatile boolean frameworkStarted; + + StartupListenerTracker(final BundleContext bundleContext) { + this.bundleContext = bundleContext; + + final ServiceReference<StartupHandler> startupHandlerServiceReference = bundleContext.getServiceReference(StartupHandler.class); + final StartupHandler startupHandler = bundleContext.getService(startupHandlerServiceReference); + startupMode = startupHandler.getMode(); + bundleContext.ungetService(startupHandlerServiceReference); + + tracker = new ServiceTracker<>(bundleContext, StartupListener.class, + new ServiceTrackerCustomizer<StartupListener, StartupListener>() { + @Override + public void removedService(final ServiceReference<StartupListener> reference, final StartupListener service) { + bundleContext.ungetService(reference); + } + + @Override + public void modifiedService(final ServiceReference<StartupListener> reference, final StartupListener service) { + // nothing to do + } + + @Override + public StartupListener addingService(final ServiceReference<StartupListener> reference) { + final StartupListener listener = bundleContext.getService(reference); + if (listener != null) { + try { + listener.inform(startupHandler.getMode(), frameworkStarted); + } catch (final Throwable t) { + log.error("Error calling StartupListener {}", listener, t); + } + } + return listener; + } + }); + tracker.open(); + bundleContext.addFrameworkListener(this); + bundleContext.addBundleListener(this); + } + + public void close() { + bundleContext.removeFrameworkListener(this); + bundleContext.removeBundleListener(this); + tracker.close(); + } + + @Override + public void frameworkEvent(FrameworkEvent event) { + if (event.getType() == FrameworkEvent.STARTED) { + frameworkStarted = true; + log.info("Startup finished"); + for (StartupListener listener : tracker.getServices(new StartupListener[0])) { + listener.startupFinished(startupMode); + } + } + } + + @Override + public void bundleChanged(BundleEvent event) { + if (event.getType() == BundleEvent.STARTED && !frameworkStarted) { + Bundle[] allBundles = bundleContext.getBundles(); + int total = allBundles.length; + int started = 0; + for (Bundle b : allBundles) { + if (b.getState() == Bundle.ACTIVE) { + started++; + } + } + float ratio = 0; + if (total > 0) { + ratio = (float) started / total; + } + log.info("Startup progress: {}% (bundles {}/{})", new Object[] {(int) (ratio * 100), started, total}); + for (StartupListener listener : tracker.getServices(new StartupListener[0])) { + listener.startupProgress(ratio); + } + } + } +}