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Posted to commits@sling.apache.org by pa...@apache.org on 2018/12/05 13:48:21 UTC
[sling-org-apache-sling-launchpad-startupmanager] 01/08: startup
manager bundle contribution
This is an automated email from the ASF dual-hosted git repository.
pauls pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/sling-org-apache-sling-launchpad-startupmanager.git
commit 916f034957164ed68c76f50b6eca97977ba33861
Author: Tomek Rękawek <to...@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. 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.
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/-->
+Contributing
+====
+
+Thanks for choosing to contribute!
+
+You will find all the necessary details about how you can do this at https://sling.apache.org/contributing.html.
diff --git a/startupmanager/LICENSE b/startupmanager/LICENSE
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/startupmanager/LICENSE
@@ -0,0 +1,202 @@
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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diff --git a/startupmanager/README.md b/startupmanager/README.md
new file mode 100644
index 0000000..64ed185
--- /dev/null
+++ b/startupmanager/README.md
@@ -0,0 +1,5 @@
+[<img src="http://sling.apache.org/res/logos/sling.png"/>](http://sling.apache.org)
+
+# Apache Sling Launchpad Startup Manager
+
+This module is part of the [Apache Sling](https://sling.apache.org) project.
diff --git a/startupmanager/pom.xml b/startupmanager/pom.xml
new file mode 100644
index 0000000..80e6d6b
--- /dev/null
+++ b/startupmanager/pom.xml
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ 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.
+-->
+<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);
+ }
+ }
+ }
+}