/*
* 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.jcr.base;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Dictionary;
import javax.jcr.Credentials;
import javax.jcr.LoginException;
import javax.jcr.NoSuchWorkspaceException;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;
import javax.jcr.Value;
import javax.jcr.Workspace;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.sling.jcr.api.SlingRepository;
import org.apache.sling.jcr.base.util.RepositoryAccessor;
import org.apache.sling.serviceusermapping.ServiceUserMapper;
import org.osgi.framework.Bundle;
import org.osgi.framework.ServiceFactory;
import org.osgi.framework.ServiceRegistration;
import org.osgi.service.component.ComponentContext;
import org.osgi.service.log.LogService;
import org.slf4j.LoggerFactory;
import aQute.bnd.annotation.ProviderType;
/**
* The <code>AbstractSlingRepository</code> is an abstract implementation of the
* {@link SlingRepository} interface which provides default support for attached
* repositories as well as ensuring live repository connection, reconnecting if
* needed. Implementations of the <code>SlingRepository</code> interface may
* wish to extend this class to benefit from a default implementation.
* <p>
* As of version 2.2 (bundle version 2.2.0) the registration of repository
* services based on this abstract base class works differently. To be able to
* know the calling bundle to implement the
* {@link #loginService(String, String)} method the service is registered as a
* service factory. Yet this component is registered as a non-service component
* with Declarative Services handling its registration itself so the the
* {@code ServiceFactory} cannot simply create instances of this class. The
* solution is for the service factory to create a proxy to the actual component
* object. All method calls are just routed through with the exception of the
* {@link #loginService(String, String)} method which is routed to a new
* internal method taking the calling bundle as an additional argument.
* <p>
* The changes to support this new registration mechanism are as follows:
* <ul>
* <li>The {@link #registerService()} method is now final.</li>
* <li>The {@link #getServiceRegistrationInterfaces()} and
* {@link #getServiceRegistrationProperties()} methods have been added and can
* be overwritten by implementations of this class. The
* {@link #registerService()} method calls these new methods to get the
* interfaces and properties for the service registration.</li>
* </ul>
* Implementations of this class overwriting the {@link #registerService()}
* method must replace this overwritten method with overwriting the new
* {@link #getServiceRegistrationInterfaces()} and/or
* {@link #getServiceRegistrationProperties()} methods.
*
* @deprecated as of API version 2.3 (bundle version 2.3). Use
* {@link AbstractSlingRepositoryManager} and
* {@link AbstractSlingRepository2} instead.
*/
@Deprecated
@ProviderType
@Component(componentAbstract=true)
public abstract class AbstractSlingRepository
extends AbstractNamespaceMappingRepository
implements SlingRepository, Runnable {
public static final String DEFAULT_ANONYMOUS_USER = "anonymous";
public static final String DEFAULT_ANONYMOUS_PASS = "anonymous";
public static final String DEFAULT_ADMIN_USER = "admin";
public static final String DEFAULT_ADMIN_PASS = "admin";
// For backwards compatibility loginAdministrative is still enabled
// In future releases, this default may change to false.
public static final boolean DEFAULT_LOGIN_ADMIN_ENABLED = true;
@Property
public static final String PROPERTY_DEFAULT_WORKSPACE = "defaultWorkspace";
@Property(value=DEFAULT_ANONYMOUS_USER)
public static final String PROPERTY_ANONYMOUS_USER = "anonymous.name";
@Property(value=DEFAULT_ANONYMOUS_PASS)
public static final String PROPERTY_ANONYMOUS_PASS = "anonymous.password";
@Property(value=DEFAULT_ADMIN_USER)
public static final String PROPERTY_ADMIN_USER = "admin.name";
@Property(value=DEFAULT_ADMIN_PASS)
public static final String PROPERTY_ADMIN_PASS = "admin.password";
@Property(boolValue = DEFAULT_LOGIN_ADMIN_ENABLED)
public static final String PROPERTY_LOGIN_ADMIN_ENABLED = "admin.login.enabled";
/**
* The default value for the number of seconds to wait between two
* consecutive checks while the repository is active (value is 10).
*/
public static final int DEFAULT_POLL_ACTIVE = 10;
/**
* The default value for the number of seconds to wait between two
* consecutive checks while the repository is not active (value is 10).
*/
public static final int DEFAULT_POLL_INACTIVE = 10;
@Property(intValue=DEFAULT_POLL_ACTIVE)
public static final String PROPERTY_POLL_ACTIVE = "poll.active";
@Property(intValue=DEFAULT_POLL_INACTIVE)
public static final String PROPERTY_POLL_INACTIVE = "poll.inactive";
/** The minimum number of seconds allowed for any of the two poll times */
public static final int MIN_POLL = 2;
@Reference
private LogService log;
@Reference()
private ServiceUserMapper serviceUserMapper;
private ComponentContext componentContext;
private Repository repository;
private ServiceRegistration repositoryService;
private String defaultWorkspace;
private String anonUser;
private char[] anonPass;
private String adminUser;
private char[] adminPass;
private boolean disableLoginAdministrative;
// the poll interval used while the repository is not active
private long pollTimeInActiveSeconds;
// the poll interval used while the repository is active
private long pollTimeActiveSeconds;
// whether the repository checker task should be active. this field
// is managed by the startRepositoryPinger and stopRepositoryPinger methods
private boolean running;
// the background thread constantly checking the repository
private Thread repositoryPinger;
protected AbstractSlingRepository() {
}
/**
* Returns the default workspace, which may be <code>null</code> meaning
* to use the repository provided default workspace. Declared final to make
* sure the SLING-256 rule is enforced.
*/
public final String getDefaultWorkspace() {
return defaultWorkspace;
}
private void setDefaultWorkspace(String defaultWorkspace) {
// normalize the default workspace name: trim leading and trailing
// blanks and set to null in case the trimmed name is empty
if (defaultWorkspace != null) {
defaultWorkspace = defaultWorkspace.trim();
if (defaultWorkspace.length() == 0) {
defaultWorkspace = null;
}
}
log(LogService.LOG_DEBUG,
"setDefaultWorkspace: Setting the default workspace to "
+ defaultWorkspace);
this.defaultWorkspace = defaultWorkspace;
}
/**
* Logs in as an anonymous user. This implementation simply returns the
* result of calling {@link #login(Credentials, String)}
*/
public Session login() throws LoginException, RepositoryException {
return this.login(null, null);
}
public final Session loginAdministrative(String workspace) throws RepositoryException {
if (this.disableLoginAdministrative) {
log(LogService.LOG_ERROR, "SlingRepository.loginAdministrative is disabled. Please use SlingRepository.loginService.");
throw new LoginException();
}
log(LogService.LOG_WARNING,
"SlingRepository.loginAdministrative is deprecated. Please use SlingRepository.loginService.");
return loginAdministrativeInternal(workspace);
}
/**
* This method always throws {@code LoginException} because it does
* not directly have the calling bundle at its disposition to decide
* on the required service name.
* <p>
* This method is final and cannot be overwritten by extensions. See the
* class comments for full details on how this works.
*
* @since 2.2 (bundle version 2.2.0)
*/
public final Session loginService(String subServiceName, String workspace) throws LoginException,
RepositoryException {
log(LogService.LOG_ERROR,
"loginService: Cannot get using Bundle because this SlingRepository service is not a ServiceFactory");
throw new LoginException();
}
public Session login(Credentials credentials) throws LoginException,
RepositoryException {
return this.login(credentials, null);
}
public Session login(String workspace) throws LoginException,
NoSuchWorkspaceException, RepositoryException {
return this.login(null, workspace);
}
public Session login(Credentials credentials, String workspace)
throws LoginException, NoSuchWorkspaceException,
RepositoryException {
// if already stopped, don't retrieve a session
if (this.componentContext == null || this.getRepository() == null) {
throw new RepositoryException("Sling Repository not ready");
}
if (credentials == null) {
credentials = getAnonCredentials(this.anonUser);
}
// check the workspace
if (workspace == null) {
workspace = this.getDefaultWorkspace();
}
try {
log(LogService.LOG_DEBUG, "login: Logging in to workspace '"
+ workspace + "'");
Session session = getRepository().login(credentials, workspace);
// if the defualt workspace is null, acquire a session from the pool
// and use the workspace used as the new default workspace
if (workspace == null) {
String defaultWorkspace = session.getWorkspace().getName();
log(LogService.LOG_DEBUG, "login: Using " + defaultWorkspace
+ " as the default workspace instead of 'null'");
setDefaultWorkspace(defaultWorkspace);
}
return this.getNamespaceAwareSession(session);
} catch (NoSuchWorkspaceException nswe) {
// if the desired workspace is the default workspace, try to create
// (but not if using the repository-supplied default workspace)
if (workspace != null
&& workspace.equals(this.getDefaultWorkspace())
&& this.createWorkspace(workspace)) {
return this.getRepository().login(credentials, workspace);
}
// otherwise (any workspace) or if workspace creation fails
// just forward the original exception
throw nswe;
} catch (RuntimeException re) {
// SLING-702: Jackrabbit throws IllegalStateException if the
// repository has already been shut down ...
throw new RepositoryException(re.getMessage(), re);
}
}
/**
* Actual implementation of the {@link #loginService(String, String)} method
* taking into account the bundle calling this method.
* <p>
* This method is final and cannot be overwritten by extensions. See the
* class comments for full details on how this works.
*
* @param usingBundle The bundle requesting access
* @param subServiceName Subservice name (may be {@code null})
* @param workspace The workspace to access
* @return The session authenticated with the service user
* @throws LoginException If authentication fails or if no user is defined
* for the requesting service (bundle)
* @throws RepositoryException If a general error occurrs creating the
* session
*
* @since 2.2 (bundle version 2.2.0)
*/
final Session loginService(final Bundle usingBundle, final String subServiceName, final String workspace)
throws LoginException, RepositoryException {
final String userName = this.serviceUserMapper.getServiceUserID(usingBundle, subServiceName);
if (userName == null) {
throw new LoginException("Cannot derive user name for bundle "
+ usingBundle + " and sub service " + subServiceName);
}
final SimpleCredentials creds = new SimpleCredentials(userName, new char[0]);
Session admin = null;
try {
admin = this.loginAdministrativeInternal(workspace);
return admin.impersonate(creds);
} finally {
if (admin != null) {
admin.logout();
}
}
}
/**
* Actual (unprotected) implementation of administrative login.
* <p>
* This methods is internally used to administratively login.
*
* @param workspace The workspace to login to (or {@code null} to use the
* {@link #getDefaultWorkspace() default workspace}.
* @return The administrative session
* @throws RepositoryException if an error occurrs.
*/
protected Session loginAdministrativeInternal(String workspace) throws RepositoryException {
Credentials sc = getAdministrativeCredentials(this.adminUser);
return this.login(sc, workspace);
}
/**
* @param anonUser the user name of the anon user.
* @return a Credentials implementation that represents the anon user.
*/
protected Credentials getAnonCredentials(String anonUser) {
// NB: this method is overridden in the Jackrabbit Service bundle to avoid using the anon password. SLING-1282
return new SimpleCredentials(anonUser, anonPass);
}
/**
* @param adminUser the name of the administrative user.
* @return a Credentials implementation that represents the administrative user.
*/
protected Credentials getAdministrativeCredentials(String adminUser){
// NB: this method is overridden in the Jackrabbit Service bundle to avoid using the admin password. SLING-1282
return new SimpleCredentials(adminUser, adminPass);
}
/*
* (non-Javadoc)
*
* @see javax.jcr.Repository#getDescriptor(java.lang.String)
*/
public String getDescriptor(String name) {
Repository repo = getRepository();
if (repo != null) {
return repo.getDescriptor(name);
}
log(LogService.LOG_ERROR, "getDescriptor: Repository not available");
return null;
}
/*
* (non-Javadoc)
*
* @see javax.jcr.Repository#getDescriptorKeys()
*/
public String[] getDescriptorKeys() {
Repository repo = getRepository();
if (repo != null) {
return repo.getDescriptorKeys();
}
log(LogService.LOG_ERROR, "getDescriptorKeys: Repository not available");
return new String[0];
}
/**
* {@inheritDoc}
*/
public Value getDescriptorValue(String key) {
Repository repo = getRepository();
if (repo != null) {
return repo.getDescriptorValue(key);
}
log(LogService.LOG_ERROR, "getDescriptorValue: Repository not available");
return null;
}
/**
* {@inheritDoc}
*/
public Value[] getDescriptorValues(String key) {
Repository repo = getRepository();
if (repo != null) {
return repo.getDescriptorValues(key);
}
log(LogService.LOG_ERROR, "getDescriptorValues: Repository not available");
return null;
}
/**
* {@inheritDoc}
*/
public boolean isSingleValueDescriptor(String key) {
Repository repo = getRepository();
if (repo != null) {
return repo.isSingleValueDescriptor(key);
}
log(LogService.LOG_ERROR, "isSingleValueDescriptor: Repository not available");
return false;
}
/**
* {@inheritDoc}
*/
public boolean isStandardDescriptor(String key) {
Repository repo = getRepository();
if (repo != null) {
return repo.isStandardDescriptor(key);
}
log(LogService.LOG_ERROR, "isStandardDescriptor: Repository not available");
return false;
}
// ---------- logging ------------------------------------------------------
protected void log(int level, String message) {
this.log(level, message, null);
}
protected void log(int level, String message, Throwable t) {
LogService log = this.log;
if (log != null) {
if (componentContext != null) {
log.log(componentContext.getServiceReference(), level, message,
t);
} else {
log.log(level, message, t);
}
}
}
// ---------- Repository Access -------------------------------------------
/**
* Returns a new instance of the {@link RepositoryAccessor} class to access
* a repository over RMI or through JNDI.
* <p>
* Extensions of this method may return an extension of the
* {@link RepositoryAccessor} class if the provide extended functionality.
*/
protected RepositoryAccessor getRepositoryAccessor() {
return new RepositoryAccessor();
}
/**
* Acquires the repository by calling the
* {@link org.apache.sling.jcr.base.util.RepositoryAccessor#getRepositoryFromURL(String)}
* with the value of the
* {@link org.apache.sling.jcr.base.util.RepositoryAccessor#REPOSITORY_URL_OVERRIDE_PROPERTY}
* framework or configuration property. If the property exists and a
* repository can be accessed using this property, that repository is
* returned. Otherwise <code>null</code> is returned.
* <p>
* Extensions of this class may overwrite this method with implementation
* specific acquisition semantics and may call this base class method or not
* as the implementation sees fit.
* <p>
* This method does not throw any <code>Throwable</code> but instead just
* returns <code>null</code> if not repository is available. Any problems
* trying to acquire the repository must be caught and logged as
* appropriate.
*
* @return The acquired JCR <code>Repository</code> or <code>null</code>
* if not repository can be acquired.
*/
protected Repository acquireRepository() {
// if the environment provides a repository override URL, other settings
// are ignored
String overrideUrl = (String) componentContext.getProperties().get(
RepositoryAccessor.REPOSITORY_URL_OVERRIDE_PROPERTY);
if (overrideUrl == null) {
overrideUrl = componentContext.getBundleContext().getProperty(
RepositoryAccessor.REPOSITORY_URL_OVERRIDE_PROPERTY);
}
if (overrideUrl != null && overrideUrl.length() > 0) {
log(LogService.LOG_INFO,
"acquireRepository: Will not use embedded repository due to property "
+ RepositoryAccessor.REPOSITORY_URL_OVERRIDE_PROPERTY + "="
+ overrideUrl + ", acquiring repository using that URL");
return getRepositoryAccessor().getRepositoryFromURL(overrideUrl);
}
log(LogService.LOG_DEBUG,
"acquireRepository: No existing repository to access");
return null;
}
/**
* This method is called after a repository has been acquired by
* {@link #acquireRepository()} but before the repository is registered as a
* service.
* <p>
* Implementations may overwrite this method but MUST call this base class
* implementation first.
*
* @param repository The JCR <code>Repository</code> to setup.
*/
protected void setupRepository(Repository repository) {
this.setup(componentContext.getBundleContext());
}
/**
* Registers this component as an OSGi service with the types provided by
* the {@link #getServiceRegistrationInterfaces()} method and properties
* provided by the {@link #getServiceRegistrationProperties()} method.
* <p>
* As of version 2.2 (bundle version 2.2.0) this method is final and cannot
* be overwritten because the mechanism of service registration using a
* service factory is required to fully implement the
* {@link #loginService(String, String)} method. See the class comments for
* full details on how this works.
*
* @return The OSGi <code>ServiceRegistration</code> object representing the
* registered service.
*/
protected final ServiceRegistration registerService() {
final Dictionary<String, Object> props = getServiceRegistrationProperties();
final String[] interfaces = getServiceRegistrationInterfaces();
return componentContext.getBundleContext().registerService(interfaces, new ServiceFactory() {
public Object getService(Bundle bundle, ServiceRegistration registration) {
return SlingRepositoryProxyHandler.createProxy(interfaces, AbstractSlingRepository.this, bundle);
}
public void ungetService(Bundle bundle, ServiceRegistration registration, Object service) {
// nothing to do (GC does the work for us)
}
}, props);
}
/**
* Return the service registration properties to be used to register the
* repository service in {@link #registerService()}.
* <p>
* This method may be overwritten to return additional service registration
* properties. But it is strongly recommended to always include the
* properties returned from this method.
*
* @return The service registration properties to be used to register the
* repository service in {@link #registerService()}
*
* @since 2.2 (bundle version 2.2.0)
*/
@SuppressWarnings("unchecked")
protected Dictionary<String, Object> getServiceRegistrationProperties() {
return componentContext.getProperties();
}
/**
* Returns the service types to be used to register the repository service
* in {@link #registerService()}. All interfaces returned must be accessible
* to the class loader of the class of this instance.
* <p>
* This method may be overwritten to return additional types but the types
* returned from this base implementation must always be included.
*
* @return The service types to be used to register the repository service
* in {@link #registerService()}
*
* @since 2.2 (bundle version 2.2.0)
*/
protected String[] getServiceRegistrationInterfaces() {
return new String[] {
SlingRepository.class.getName(), Repository.class.getName()
};
}
/**
* Returns the repository underlying this instance or <code>null</code> if
* no repository is currently being available.
*/
protected Repository getRepository() {
return repository;
}
/**
* Checks that the given <code>repository</code> is still available. This
* implementation tries to get the <code>Repository.SPEC_NAME_DESC</code>
* descriptor from the repository and returns <code>true</code> if the
* returned value is not <code>null</code>.
* <p>
* Extensions of this class may overwrite this method to implement different
* access checks. The contract of this method must be obeyed, though in a
* sense, the <code>true</code> must only be returned if
* <code>repository</code> is actually usable.
*
* @param repository The JCR <code>Repository</code> to check for
* availability.
* @return <code>true</code> if <code>repository</code> is not
* <code>null</code> and accessible.
*/
protected boolean pingRepository(Repository repository) {
if (repository != null) {
try {
return repository.getDescriptor(Repository.SPEC_NAME_DESC) != null;
} catch (Throwable t) {
log(LogService.LOG_DEBUG, "pingRepository: Repository "
+ repository + " does not seem to be available any more", t);
}
}
// fall back to unavailable
return false;
}
/** Ping our current repository and check that admin login (required by Sling) works. */
protected boolean pingAndCheck() {
if(repository == null) {
throw new IllegalStateException("Repository is null");
}
boolean result = false;
if(pingRepository(repository)) {
try {
final Session s = loginAdministrativeInternal(getDefaultWorkspace());
s.logout();
result = true;
} catch(RepositoryException re) {
log.log(LogService.LOG_INFO, "pingAndCheck; loginAdministrative failed", re);
}
}
return result;
}
/**
* Unregisters the service represented by the
* <code>serviceRegistration</code>.
* <p>
* This method may be overwritten by extensions of this class as long as it
* is made sure, the given service registration is unregistered.
*/
protected void unregisterService(ServiceRegistration serviceRegistration) {
serviceRegistration.unregister();
}
/**
* Performs any cleanups before the repository is actually disposed off by
* the {@link #disposeRepository(Repository)} method.
* <p>
* This method is meant for cleanup tasks before the repository is actually
* disposed off. Extensions of this class may overwrite but must call this
* base class implementation.
*
* @param repository
*/
protected void tearDown(Repository repository) {
this.tearDown();
}
/**
* Disposes off the given <code>repository</code>. This base class
* implementation does nothing. Extensions should overwrite if any special
* disposal operation is required.
*
* @param repository
*/
protected void disposeRepository(Repository repository) {
// nothing to do here ...
}
// --------- SCR integration -----------------------------------------------
protected ComponentContext getComponentContext() {
return this.componentContext;
}
/**
* This method must be called if overwritten by implementations !!
*
* @throws nothing, but allow derived classes to throw any Exception
*/
protected void activate(final ComponentContext componentContext) throws Exception {
this.componentContext = componentContext;
@SuppressWarnings("unchecked")
Dictionary<String, Object> properties = componentContext.getProperties();
setDefaultWorkspace(this.getProperty(properties,
PROPERTY_DEFAULT_WORKSPACE, null));
this.anonUser = this.getProperty(properties, PROPERTY_ANONYMOUS_USER,
DEFAULT_ANONYMOUS_USER);
this.anonPass = this.getProperty(properties, PROPERTY_ANONYMOUS_PASS,
DEFAULT_ANONYMOUS_PASS).toCharArray();
this.adminUser = this.getProperty(properties, PROPERTY_ADMIN_USER,
DEFAULT_ADMIN_USER);
this.adminPass = this.getProperty(properties, PROPERTY_ADMIN_PASS,
DEFAULT_ADMIN_PASS).toCharArray();
this.disableLoginAdministrative = !this.getProperty(properties, PROPERTY_LOGIN_ADMIN_ENABLED,
DEFAULT_LOGIN_ADMIN_ENABLED);
setPollTimeActive(getIntProperty(properties, PROPERTY_POLL_ACTIVE));
setPollTimeInActive(getIntProperty(properties, PROPERTY_POLL_INACTIVE));
// immediately try to start the repository while activating
// this component instance
try {
if (startRepository()) {
log(LogService.LOG_INFO, "Repository started successfully");
} else {
log(LogService.LOG_WARNING,
"Repository startup failed, will try later");
}
} catch (Throwable t) {
log(LogService.LOG_WARNING,
"activate: Unexpected problem starting repository", t);
}
// launch the background repository checker now
startRepositoryPinger();
}
/**
* This method must be called if overwritten by implementations !!
*
* @param componentContext
*/
protected void deactivate(final ComponentContext componentContext) {
// stop the background thread
stopRepositoryPinger();
// ensure the repository is really disposed off
if (repository != null || repositoryService != null) {
log(LogService.LOG_INFO,
"deactivate: Repository still running, forcing shutdown");
try {
stopRepository();
} catch (Throwable t) {
log(LogService.LOG_WARNING,
"deactivate: Unexpected problem stopping repository", t);
}
}
this.componentContext = null;
}
protected void bindLog(LogService log) {
this.log = log;
}
protected void unbindLog(LogService log) {
if (this.log == log) {
this.log = null;
}
}
// ---------- internal -----------------------------------------------------
private String getProperty(Dictionary<String, Object> properties,
String name, String defaultValue) {
Object prop = properties.get(name);
return (prop instanceof String) ? (String) prop : defaultValue;
}
private int getIntProperty(Dictionary<String, Object> properties,
String name) {
Object prop = properties.get(name);
if (prop instanceof Number) {
return ((Number) prop).intValue();
} else if (prop != null) {
try {
return Integer.decode(String.valueOf(prop)).intValue();
} catch (NumberFormatException nfe) {
// don't really care
}
}
return -1;
}
private boolean getProperty(Dictionary<String, Object> properties, String name, boolean defaultValue) {
Object prop = properties.get(name);
if (prop instanceof Boolean) {
return ((Boolean) prop).booleanValue();
} else if (prop instanceof String) {
return Boolean.valueOf((String) prop);
}
return defaultValue;
}
private boolean createWorkspace(String workspace) {
this.log(LogService.LOG_INFO, "createWorkspace: Requested workspace "
+ workspace + " does not exist, trying to create");
Session tmpSession = null;
try {
Credentials sc = getAdministrativeCredentials(this.adminUser);
tmpSession = this.getRepository().login(sc);
Workspace defaultWs = tmpSession.getWorkspace();
defaultWs.createWorkspace(workspace);
return true;
} catch (Throwable t) {
this.log(LogService.LOG_ERROR,
"createWorkspace: Cannot create requested workspace "
+ workspace, t);
} finally {
if (tmpSession != null) {
tmpSession.logout();
}
}
// fall back to failure
return false;
}
// ---------- Background operation checking repository availability --------
private void setPollTimeActive(int seconds) {
if (seconds < MIN_POLL) {
seconds = DEFAULT_POLL_ACTIVE;
}
pollTimeActiveSeconds = seconds;
}
private void setPollTimeInActive(int seconds) {
if (seconds < MIN_POLL) {
seconds = DEFAULT_POLL_INACTIVE;
}
pollTimeInActiveSeconds = seconds;
}
private void startRepositoryPinger() {
if (repositoryPinger == null) {
// make sure the ping will be running
running = true;
// create and start the thread
repositoryPinger = new Thread(this, "Repository Pinger");
repositoryPinger.start();
}
}
private void stopRepositoryPinger() {
// make sure the thread is terminating
running = false;
// nothing to do if the thread is not running at all
Thread rpThread = repositoryPinger;
if (rpThread == null) {
return;
}
// clear the repositoryPinger thread field
repositoryPinger = null;
// notify the thread for it to be able to shut down
synchronized (rpThread) {
rpThread.notifyAll();
}
// wait at most 10 seconds for the thread to terminate
try {
rpThread.join(10000L);
} catch (InterruptedException ie) {
// don't care here
}
// consider it an error if the thread is still running !!
if (rpThread.isAlive()) {
log(LogService.LOG_ERROR,
"stopRepositoryPinger: Timed waiting for thread " + rpThread
+ " to terminate");
}
}
private boolean startRepository() {
try {
log(LogService.LOG_DEBUG,
"startRepository: calling acquireRepository()");
Repository newRepo = acquireRepository();
if (newRepo != null) {
// ensure we really have the repository
log(LogService.LOG_DEBUG,
"startRepository: got a Repository, calling pingRepository()");
if (pingRepository(newRepo)) {
repository = newRepo;
if(pingAndCheck()) {
log(LogService.LOG_DEBUG,
"startRepository: pingRepository() and pingAndCheck() successful, calling setupRepository()");
setupRepository(newRepo);
log(LogService.LOG_DEBUG,
"startRepository: calling registerService()");
repositoryService = registerService();
log(LogService.LOG_DEBUG,
"registerService() successful, registration="
+ repositoryService);
return true;
}
// ping succeeded but pingAndCheck fail, we have to drop
// the repository in this situation and restart from
// scratch later
log(
LogService.LOG_DEBUG,
"pingRepository() successful but pingAndCheck() fails, calling disposeRepository()");
// drop reference
repository = null;
} else {
// otherwise let go of the repository and fail startup
log(LogService.LOG_DEBUG,
"startRepository: pingRepository() failed, calling disposeRepository()");
}
// ping or pingAndCheck failed: dispose off repository
disposeRepository(newRepo);
}
} catch (Throwable t) {
// consider an uncaught problem an error
log(
LogService.LOG_ERROR,
"startRepository: Uncaught Throwable trying to access Repository, calling stopRepository()",
t);
// repository might be partially started, stop anything left
stopRepository();
}
return false;
}
private void stopRepository() {
if (repositoryService != null) {
try {
log(LogService.LOG_DEBUG,
"Unregistering SlingRepository service, registration="
+ repositoryService);
unregisterService(repositoryService);
} catch (Throwable t) {
log(
LogService.LOG_INFO,
"stopRepository: Uncaught problem unregistering the repository service",
t);
}
repositoryService = null;
}
if (repository != null) {
Repository oldRepo = repository;
repository = null;
try {
tearDown(oldRepo);
} catch (Throwable t) {
log(
LogService.LOG_INFO,
"stopRepository: Uncaught problem tearing down the repository",
t);
}
try {
disposeRepository(oldRepo);
} catch (Throwable t) {
log(
LogService.LOG_INFO,
"stopRepository: Uncaught problem disposing the repository",
t);
}
}
}
public void run() {
// start polling with a small value to be faster at system startup
// we'll increase the polling time after each try
long pollTimeMsec = 100L;
final long MSEC = 1000L;
final int pollTimeFactor = 2;
Object waitLock = repositoryPinger;
try {
while (running) {
// wait first before starting to check
synchronized (waitLock) {
try {
// no debug logging, see SLING-505
// log(LogService.LOG_DEBUG, "Waiting " + pollTime + " seconds before checking repository");
waitLock.wait(pollTimeMsec);
} catch (InterruptedException ie) {
// don't care, go ahead
}
}
long newPollTime = pollTimeMsec;
if (running) {
Repository repo = repository;
boolean ok = false;
if (repo == null) {
// No Repository yet, try to start
if (startRepository()) {
log(LogService.LOG_INFO, "Repository started successfully");
ok = true;
newPollTime = pollTimeActiveSeconds * MSEC;
} else {
// ramp up poll time, up to the max of our configured times
newPollTime = Math.min(pollTimeMsec * pollTimeFactor, Math.max(pollTimeInActiveSeconds, pollTimeActiveSeconds) * MSEC);
}
} else if (pingAndCheck()) {
ok = true;
newPollTime = pollTimeActiveSeconds * MSEC;
} else {
// Repository disappeared
log(LogService.LOG_INFO,
"run: Repository not accessible anymore, unregistering service");
stopRepository();
newPollTime = pollTimeInActiveSeconds * MSEC;
}
if(newPollTime != pollTimeMsec) {
pollTimeMsec = newPollTime;
log(LogService.LOG_DEBUG,
"Repository Pinger interval set to " + pollTimeMsec + " msec, repository is "
+ (ok ? "available" : "NOT available")
);
}
}
}
// thread is terminating due to "running" being set to false
log(LogService.LOG_INFO, "Repository Pinger stopping on request");
} catch (Throwable t) {
// try to log the cause for thread termination
log(LogService.LOG_ERROR, "Repository Pinger caught unexpected issue", t);
} finally {
// whatever goes on, make sure the repository is disposed of
// at the end of the thread....
log(LogService.LOG_INFO, "Stopping repository on shutdown");
stopRepository();
}
}
/**
* The <code>SlingRepositoryProxyHandler</code> class implements a proxy for all
* service interfaces under which the {@link AbstractSlingRepository}
* implementation is registered.
* <p>
* All calls a directly handed through to the object except for the
* {@code loginService} call which is routed through
* {@code AbstractSlingRepository.loginService(Bundle, String, String)} method
* to influence logging in by the calling bundle.
*
* @since 2.2 (bundle version 2.2.0)
*/
private static class SlingRepositoryProxyHandler implements InvocationHandler {
// The name of the method to re-route
private static final String LOGIN_SERVICE_NAME = "loginService";
// The delegatee object to which all calls are routed
private final AbstractSlingRepository delegatee;
// The bundle using this proxy service instance
private final Bundle usingBundle;
/**
* Creates a new proxy instance for the given {@code delegatee} object. The
* proxy is handled by a new instance of this
* {@code SlingRepositoryProxyHandler} handler.
*
* @param interfaceNames The list of interfaces to implement and expose in
* the proxy
* @param delegatee The object to which to route all method calls
* @param usingBundle The bundle making use of the proxy
* @return The proxy to be used by client code or {@code null} if not all
* service interfaces can be loaded by the class loader of the
* {@code delegatee} object.
*/
static Object createProxy(final String[] interfaceNames, final AbstractSlingRepository delegatee,
final Bundle usingBundle) {
// get the interface classes to create the proxy
final ClassLoader cl = delegatee.getClass().getClassLoader();
final Class<?>[] interfaces = new Class<?>[interfaceNames.length];
for (int i = 0; i < interfaces.length; i++) {
try {
interfaces[i] = cl.loadClass(interfaceNames[i]);
} catch (ClassNotFoundException e) {
LoggerFactory.getLogger(SlingRepositoryProxyHandler.class).error(
"createProxy: Cannot load interface class " + interfaceNames[i], e);
return null;
}
}
// create the proxy
final InvocationHandler handler = new SlingRepositoryProxyHandler(delegatee, usingBundle);
return Proxy.newProxyInstance(cl, interfaces, handler);
}
private SlingRepositoryProxyHandler(final AbstractSlingRepository delegatee, final Bundle usingBundle) {
this.delegatee = delegatee;
this.usingBundle = usingBundle;
}
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
if (SlingRepositoryProxyHandler.LOGIN_SERVICE_NAME.equals(method.getName()) && args != null && args.length == 2) {
return this.delegatee.loginService(this.usingBundle, (String) args[0], (String) args[1]);
}
// otherwise forward to the AbstractSlingRepository implementation
try {
return method.invoke(this.delegatee, args);
} catch (InvocationTargetException ite) {
throw ite.getTargetException();
}
}
}
}