Examples with Coordination org.osgi.service.coordinator.Coordination used on opensource projects

Example 6 with Coordination

use of org.osgi.service.coordinator.Coordination in project tesb-rt-se by Talend.

the class CoordinationEndInterceptor method handleMessage.

@Override
public void handleMessage(Message message) throws Fault {
    Coordination coordination = message.getExchange().get(Coordination.class);
    coordination.end();
}

Example 7 with Coordination

use of org.osgi.service.coordinator.Coordination in project tesb-rt-se by Talend.

the class BookRepositoryTest method testEMLifecycleWithCoordination.

/**
 * Test EntityManager life cycle can be extended by outer Coordination
 */
@Test
public void testEMLifecycleWithCoordination() throws Exception {
    Coordination coordination = coordinator.begin("coord", 10000);
    Book book = createBook("My title");
    try {
        bookRepository.add(book);
        Book book2 = bookRepository.getBook(book.getId());
        Format format = book2.getFormats().get(0);
        Assert.assertEquals(book.getFormats().get(0).getFile().toString(), format.getFile().toString());
    } finally {
        bookRepository.delete(book.getId());
        coordination.end();
    }
}

Example 8 with Coordination

use of org.osgi.service.coordinator.Coordination in project aries by apache.

the class StartAction method run.

@Override
public Object run() {
    // Protect against re-entry now that cycles are supported.
    if (!Activator.getInstance().getLockingStrategy().set(State.STARTING, target)) {
        return null;
    }
    try {
        AffectedResources affectedResources;
        // If necessary, install the dependencies.
        if (State.INSTALLING.equals(target.getState()) && !Utils.isProvisionDependenciesInstall(target)) {
            // Acquire the global write lock while installing dependencies.
            Activator.getInstance().getLockingStrategy().writeLock();
            try {
                // We are now protected against installs, starts, stops, and uninstalls.
                // We need a separate coordination when installing
                // dependencies because cleaning up the temporary export
                // sharing policies must be done while holding the write lock.
                Coordination c = Utils.createCoordination(target);
                try {
                    installDependencies(target, c);
                    // Associated subsystems must be computed after all dependencies
                    // are installed because some of the dependencies may be
                    // subsystems. This is safe to do while only holding the read
                    // lock since we know that nothing can be added or removed.
                    affectedResources = computeAffectedResources(target);
                    for (BasicSubsystem subsystem : affectedResources.subsystems()) {
                        if (State.INSTALLING.equals(subsystem.getState()) && !Utils.isProvisionDependenciesInstall(subsystem)) {
                            installDependencies(subsystem, c);
                        }
                    }
                    // Downgrade to the read lock in order to prevent
                    // installs and uninstalls but allow starts and stops.
                    Activator.getInstance().getLockingStrategy().readLock();
                } catch (Throwable t) {
                    c.fail(t);
                } finally {
                    // This will clean up the temporary export sharing
                    // policies. Must be done while holding the write lock.
                    c.end();
                }
            } finally {
                // Release the global write lock as soon as possible.
                Activator.getInstance().getLockingStrategy().writeUnlock();
            }
        } else {
            // Acquire the read lock in order to prevent installs and
            // uninstalls but allow starts and stops.
            Activator.getInstance().getLockingStrategy().readLock();
        }
        try {
            // and uninstalls.
            if (Restriction.INSTALL_ONLY.equals(restriction)) {
                return null;
            }
            // Compute associated subsystems here in case (1) they weren't
            // computed previously while holding the write lock or (2) they
            // were computed previously and more were subsequently added.
            // This is safe to do while only holding the read lock since we
            // know that nothing can be added or removed.
            affectedResources = computeAffectedResources(target);
            // Acquire the global mutual exclusion lock while acquiring the
            // state change locks of affected subsystems.
            Activator.getInstance().getLockingStrategy().lock();
            try {
                // We are now protected against cycles.
                // Acquire the state change locks of affected subsystems.
                Activator.getInstance().getLockingStrategy().lock(affectedResources.subsystems());
            } finally {
                // Release the global mutual exclusion lock as soon as possible.
                Activator.getInstance().getLockingStrategy().unlock();
            }
            Coordination coordination = this.coordination;
            try {
                coordination = createCoordination();
                // We are now protected against other starts and stops of the affected subsystems.
                if (!isTargetStartable(instigator, requestor, target)) {
                    return null;
                }
                // Resolve if necessary.
                if (State.INSTALLED.equals(target.getState()))
                    resolve(instigator, target, target, coordination, affectedResources.subsystems());
                if (Restriction.RESOLVE_ONLY.equals(restriction))
                    return null;
                target.setState(State.STARTING);
                // Be sure to set the state back to RESOLVED if starting fails.
                coordination.addParticipant(new Participant() {

                    @Override
                    public void ended(Coordination coordination) throws Exception {
                    // Nothing.
                    }

                    @Override
                    public void failed(Coordination coordination) throws Exception {
                        target.setState(State.RESOLVED);
                    }
                });
                SubsystemContentHeader header = target.getSubsystemManifest().getSubsystemContentHeader();
                if (header != null)
                    Collections.sort(affectedResources.resources(), new StartResourceComparator(header));
                for (Resource resource : affectedResources.resources()) startResource(resource, coordination);
                target.setState(State.ACTIVE);
            } catch (Throwable t) {
                // We catch exceptions and fail the coordination here to
                // ensure we are still holding the state change locks when
                // the participant sets the state to RESOLVED.
                coordination.fail(t);
            } finally {
                try {
                    // of this start action.
                    if (coordination.getName().equals(Utils.computeCoordinationName(target))) {
                        coordination.end();
                    }
                } finally {
                    // Release the state change locks of affected subsystems.
                    Activator.getInstance().getLockingStrategy().unlock(affectedResources.subsystems());
                }
            }
        } finally {
            // Release the read lock.
            Activator.getInstance().getLockingStrategy().readUnlock();
        }
    } catch (CoordinationException e) {
        Throwable t = e.getCause();
        if (t == null) {
            throw new SubsystemException(e);
        }
        if (t instanceof SecurityException) {
            throw (SecurityException) t;
        }
        if (t instanceof SubsystemException) {
            throw (SubsystemException) t;
        }
        throw new SubsystemException(t);
    } finally {
        // Protection against re-entry no longer required.
        Activator.getInstance().getLockingStrategy().unset(State.STARTING, target);
    }
    return null;
}

Example 9 with Coordination

use of org.osgi.service.coordinator.Coordination in project aries by apache.

the class BasicSubsystem method setDeploymentManifest.

synchronized void setDeploymentManifest(DeploymentManifest value) throws IOException {
    deploymentManifest = value;
    Coordination coordination = Activator.getInstance().getCoordinator().peek();
    if (logger.isDebugEnabled())
        logger.debug("Setting deployment manifest for subsystem {} using coordination {}", getSymbolicName(), coordination == null ? null : coordination.getName());
    if (coordination == null) {
        saveDeploymentManifest();
    } else {
        Map<Class<?>, Object> variables = coordination.getVariables();
        synchronized (variables) {
            @SuppressWarnings("unchecked") Set<BasicSubsystem> dirtySubsystems = (Set<BasicSubsystem>) variables.get(SaveManifestParticipant.class);
            if (dirtySubsystems == null) {
                // currently no dirty subsystems found;
                // create a list to hold them and store it as a variable
                dirtySubsystems = new HashSet<BasicSubsystem>();
                variables.put(SaveManifestParticipant.class, dirtySubsystems);
                // add the save manifest participant
                coordination.addParticipant(new SaveManifestParticipant());
            }
            dirtySubsystems.add(this);
        }
    }
}

Example 10 with Coordination

use of org.osgi.service.coordinator.Coordination in project felix by apache.

the class CoordinationImpl method getEnclosingCoordination.

/**
 * @see org.osgi.service.coordinator.Coordination#getEnclosingCoordination()
 */
public Coordination getEnclosingCoordination() {
    this.owner.checkPermission(name, CoordinationPermission.ADMIN);
    Coordination c = this.owner.getEnclosingCoordination(this);
    if (c != null) {
        c = ((CoordinationImpl) c).holderRef.get();
    }
    return c;
}