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package com.sun.enterprise.glassfish.bootstrap.osgi;
import com.sun.enterprise.glassfish.bootstrap.MainHelper;
import com.sun.enterprise.glassfish.bootstrap.Constants;
import org.glassfish.embeddable.BootstrapProperties;
import org.glassfish.embeddable.GlassFishException;
import org.glassfish.embeddable.GlassFishRuntime;
import org.glassfish.embeddable.spi.RuntimeBuilder;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleException;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.launch.Framework;
import java.io.*;
import java.util.List;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import static com.sun.enterprise.glassfish.bootstrap.Constants.HK2_CACHE_DIR;
import static com.sun.enterprise.glassfish.bootstrap.Constants.INHABITANTS_CACHE;
import static com.sun.enterprise.glassfish.bootstrap.osgi.Constants.*;
import static com.sun.enterprise.glassfish.bootstrap.osgi.Constants.PROVISIONING_OPTIONS_PREFIX;
import static org.osgi.framework.Constants.FRAMEWORK_STORAGE_CLEAN;
import static org.osgi.framework.Constants.FRAMEWORK_STORAGE_CLEAN_ONFIRSTINIT;
import com.sun.enterprise.glassfish.bootstrap.LogFacade;
/**
* This RuntimeBuilder can only handle GlassFish_Platform of following types:
* <p/>
* {@link Constants.Platform#Felix},
* {@link Constants.Platform#Equinox},
* and {@link Constants.Platform#Knopflerfish}.
* <p/>
* <p/>It can't handle GenericOSGi platform,
* because it reads framework configuration from a framework specific file when it calls
* {@link MainHelper#buildStartupContext(java.util.Properties)}.
* <p/>
* This class is responsible for
* a) setting up OSGi framework,
* b) installing glassfish bundles,
* c) starting a configured list of bundles
* d) obtaining a reference to GlassFishRuntime OSGi service.
* <p/>
* Steps #b & #c are handled via {@link BundleProvisioner}.
* We specify our provisioning bundle details in the properties object that's used to boostrap
* the system. BundleProvisioner installs and starts such bundles,
* <p/>
* If caller does not pass in a properly populated properties object, we assume that we are
* running against an existing installation of glassfish and set appropriate default values.
* <p/>
* <p/>
* This class is registered as a provider of RuntimeBuilder using META-INF/services file.
*
* @author Sanjeeb.Sahoo@Sun.COM
*/
public final class OSGiGlassFishRuntimeBuilder implements RuntimeBuilder {
/*
* Not a thread safe class.
*/
private Framework framework;
private Logger logger = LogFacade.BOOTSTRAP_LOGGER;
private Properties oldProvisioningOptions;
private Properties newProvisioningOptions;
// These two should be a part of an external interface of HK2, but they are not, so we have to duplicate them here.
private OSGiFrameworkLauncher fwLauncher;
/**
* Default constructor needed for meta-inf/service lookup to work
*/
public OSGiGlassFishRuntimeBuilder() {}
public GlassFishRuntime build(BootstrapProperties bsProps) throws GlassFishException {
try {
MainHelper.buildStartupContext(bsProps.getProperties());
Properties properties = bsProps.getProperties();
// Set the builder name so that when we check for nonEmbedded() inside GlassFishMainActivator,
// we can identify the environment.
properties.setProperty(Constants.BUILDER_NAME_PROPERTY, getClass().getName());
// Step 0: Locate and launch a framework
long t0 = System.currentTimeMillis();
fwLauncher = new OSGiFrameworkLauncher(properties);
framework = fwLauncher.launchOSGiFrameWork();
long t1 = System.currentTimeMillis();
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "build", "Launched {0}", new Object[]{framework});
// Step 1: install/update/delete bundles
if (newFramework()) {
storeProvisioningOptions(properties);
} else {
reconfigure(properties); // this will reconfigure if any provisioning options have changed.
}
BundleProvisioner bundleProvisioner = BundleProvisioner.createBundleProvisioner(
framework.getBundleContext(), properties);
List<Long> bundleIds = bundleProvisioner.installBundles();
if (bundleProvisioner.hasAnyThingChanged()) {
bundleProvisioner.refresh();
deleteHK2Cache(properties); // clean hk2 cache so that updated bundle details will go in there.
// Save the bundle ids for use during restart.
storeBundleIds(bundleIds.toArray(new Long[bundleIds.size()]));
}
if (bundleProvisioner.isSystemBundleUpdationRequired()) {
logger.log(Level.INFO, LogFacade.UPDATING_SYSTEM_BUNDLE);
framework.update();
framework.waitForStop(0);
framework.init();
bundleProvisioner.setBundleContext(framework.getBundleContext());
}
// Step 2: Start bundles
bundleProvisioner.startBundles();
long t2 = System.currentTimeMillis();
// Step 3: Start the framework, so bundles will get activated as per their start levels
framework.start();
long t3 = System.currentTimeMillis();
printStats(bundleProvisioner, t0, t1, t2, t3);
// Step 4: Obtain reference to GlassFishRuntime and return the same
return getGlassFishRuntime();
} catch (Exception e) {
throw new GlassFishException(e);
}
}
public boolean handles(BootstrapProperties bsProps) {
// See GLASSFISH-16743 for the reason behind additional check
final String builderName = bsProps.getProperty(Constants.BUILDER_NAME_PROPERTY);
if (builderName != null && !builderName.equals(getClass().getName())) {
return false;
}
/*
* This builder can't handle GOSGi platform, because we read framework configuration from a framework
* specific file in MainHelper.buildStartupContext(properties);
*/
String platformStr = bsProps.getProperty(Constants.PLATFORM_PROPERTY_KEY);
if (platformStr != null && platformStr.trim().length() != 0) {
try {
Constants.Platform platform = Constants.Platform.valueOf(platformStr);
switch (platform) {
case Felix:
case Equinox:
case Knopflerfish:
return true;
}
} catch (IllegalArgumentException ex) {
// might be a plugged-in custom platform.
}
}
return false;
}
private GlassFishRuntime getGlassFishRuntime() throws GlassFishException {
final ServiceReference reference =
framework.getBundleContext().getServiceReference(GlassFishRuntime.class.getName());
if (reference != null) {
GlassFishRuntime embeddedGfr = (GlassFishRuntime) framework.getBundleContext().getService(reference);
return new OSGiGlassFishRuntime(embeddedGfr, framework);
}
throw new GlassFishException("No GlassFishRuntime available");
}
private void deleteHK2Cache(Properties properties) throws GlassFishException {
// This is a HACK - thanks to some weired optimization trick
// done for GlassFish. HK2 maintains a cache of inhabitants and
// that needs to be recreated when there is a change in modules dir.
final String cacheDir = properties.getProperty(HK2_CACHE_DIR);
if (cacheDir != null) {
File inhabitantsCache = new File(cacheDir, INHABITANTS_CACHE);
if (inhabitantsCache.exists()) {
if (!inhabitantsCache.delete()) {
throw new GlassFishException("cannot delete cache:" +
inhabitantsCache.getAbsolutePath());
}
}
}
}
private void printStats(BundleProvisioner bundleProvisioner, long t0, long t1, long t2, long t3) {
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "build",
"installed = {0}, updated = {1}, uninstalled = {2}",
new Object[]{bundleProvisioner.getNoOfInstalledBundles(),
bundleProvisioner.getNoOfUpdatedBundles(),
bundleProvisioner.getNoOfUninstalledBundles()});
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "build",
"Total time taken (in ms) to initialize framework = {0}, " +
"to install/update/delete/start bundles = {1}, " +
"to start framework= {2}",
new Object[]{t1 - t0, t2 - t1, t3 - t2});
}
private boolean newFramework() {
return framework.getBundleContext().getBundles().length == 1;
}
/**
* This method helps in situations where glassfish installation directory has been moved or
* certain initial provisoning options have changed, etc. If such thing has happened, it uninstalls
* all the bundles that were installed from GlassFish installation location.
*/
private void reconfigure(Properties properties) throws Exception {
if (hasBeenReconfigured(properties)) {
logger.log(Level.INFO, LogFacade.PROVISIONING_OPTIONS_CHANGED);
framework.stop();
framework.waitForStop(0);
properties.setProperty(FRAMEWORK_STORAGE_CLEAN,
FRAMEWORK_STORAGE_CLEAN_ONFIRSTINIT);
fwLauncher = new OSGiFrameworkLauncher(properties);
framework = fwLauncher.launchOSGiFrameWork();
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "reconfigure", "Launched {0}",
new Object[]{framework});
storeProvisioningOptions(properties);
}
}
private boolean hasBeenReconfigured(Properties properties) {
try {
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "hasBeenReconfigured", "oldProvisioningOptions = {0}",
new Object[]{getOldProvisioningOptions()});
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "hasBeenReconfigured", "newProvisioningOptions = {0}",
new Object[]{getNewProvisioningOptions(properties)});
return !getNewProvisioningOptions(properties).equals(getOldProvisioningOptions());
} catch (IOException e) {
e.printStackTrace();
return true;
}
}
/**
* @return properties used by BundleProvisioner
*/
private Properties getNewProvisioningOptions(Properties properties) {
if (newProvisioningOptions == null) {
Properties props = new Properties();
for (String key : properties.stringPropertyNames()) {
if (key.startsWith(PROVISIONING_OPTIONS_PREFIX)) {
props.setProperty(key, properties.getProperty(key));
}
}
newProvisioningOptions = props;
}
return newProvisioningOptions;
}
private void storeBundleIds(Long[] bundleIds) {
ObjectOutputStream os = null;
try {
File f = framework.getBundleContext().getDataFile(BUNDLEIDS_FILENAME);
// GLASSFISH-19623: f can be null
if (f == null) {
logger.log(Level.WARNING, LogFacade.CANT_STORE_BUNDLEIDS);
return;
}
os = new ObjectOutputStream(new FileOutputStream(f));
os.writeObject(bundleIds);
os.flush();
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "storeBundleIds", "Stored bundle ids in {0}",
new Object[]{f.getAbsolutePath()});
} catch (IOException e) {
e.printStackTrace();
} finally {
if (os != null) {
try {
os.close();
} catch (IOException e) {
// ignored
}
}
}
}
private void storeProvisioningOptions(Properties properties) {
FileOutputStream os = null;
try {
File f = framework.getBundleContext().getDataFile(PROVISIONING_OPTIONS_FILENAME);
// GLASSFISH-19623: f can be null
if (f == null) {
logger.log(Level.WARNING, LogFacade.CANT_STORE_PROVISIONING_OPTIONS);
return;
}
os = new FileOutputStream(f);
getNewProvisioningOptions(properties).store(os, "");
os.flush();
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "storeProvisioningOptions", "Stored provisioning options in {0}",
new Object[]{f.getAbsolutePath()});
} catch (IOException e) {
e.printStackTrace();
} finally {
if (os != null) {
try {
os.close();
} catch (IOException e) {
// ignored
}
}
}
}
private Properties getOldProvisioningOptions() throws IOException {
if (oldProvisioningOptions == null) {
Properties options = new Properties();
try {
File f = framework.getBundleContext().getDataFile(PROVISIONING_OPTIONS_FILENAME);
if (f != null && f.exists()) { // GLASSFISH-19623: f can be null
options.load(new FileInputStream(f));
logger.logp(Level.FINE, "OSGiGlassFishRuntimeBuilder", "getOldProvisioningOptions",
"Read provisioning options from {0}", new Object[]{f.getAbsolutePath()});
oldProvisioningOptions = options;
}
} catch (Exception e) {
e.printStackTrace();
}
}
return oldProvisioningOptions;
}
}