Examples with ComponentInfo com.cosylab.acs.maci.ComponentInfo used on opensource projects

Example 31 with ComponentInfo

use of com.cosylab.acs.maci.ComponentInfo in project ACS by ACS-Community.

the class ManagerImpl method getCollocatedComponent.

/**
	 * @see com.cosylab.acs.maci.Manager#getCollocatedComponent(int, com.cosylab.acs.maci.ComponentSpec, boolean, URI)
	 */
/// @todo MF not supported
public ComponentInfo getCollocatedComponent(int id, ComponentSpec componentSpec, boolean markAsDefault, URI targetComponentURI) throws AcsJCannotGetComponentEx, AcsJNoPermissionEx, AcsJIncompleteComponentSpecEx, AcsJInvalidComponentSpecEx, AcsJComponentSpecIncompatibleWithActiveComponentEx {
    try {
        // check if null
        if (componentSpec == null) {
            AcsJNullPointerEx ex = new AcsJNullPointerEx();
            ex.setVariable("componentSpec");
            throw ex;
        }
        // check componentSpec components are null
        if (componentSpec.getName() == null) {
            AcsJNullPointerEx ex = new AcsJNullPointerEx();
            ex.setVariable("componentSpec.Name");
            throw ex;
        }
        if (componentSpec.getType() == null) {
            AcsJNullPointerEx ex = new AcsJNullPointerEx();
            ex.setVariable("componentSpec.Type");
            throw ex;
        }
        if (componentSpec.getCode() == null) {
            AcsJNullPointerEx ex = new AcsJNullPointerEx();
            ex.setVariable("componentSpec.Code");
            throw ex;
        }
        if (componentSpec.getContainer() == null) {
            AcsJNullPointerEx ex = new AcsJNullPointerEx();
            ex.setVariable("componentSpec.Container");
            throw ex;
        }
        // check for empty componentSpec.name
        if (componentSpec.getName().length() == 0) {
            AcsJBadParameterEx ex = new AcsJBadParameterEx();
            ex.setParameter("componentSpec.Name");
            ex.setParameterValue("EMPTY");
            ex.setReason("Non empty Component Name expected");
            throw ex;
        }
        // check if null
        if (targetComponentURI == null) {
            AcsJNullPointerEx ex = new AcsJNullPointerEx();
            ex.setVariable("targetComponentURI");
            throw ex;
        }
        if (!componentSpec.getContainer().equals(ComponentSpec.COMPSPEC_ANY)) {
            AcsJBadParameterEx ex = new AcsJBadParameterEx();
            ex.setParameter("componentSpec.Container");
            ex.setParameterValue(componentSpec.getContainer());
            ex.setReason("COMPSPEC_ANY expected");
            throw ex;
        }
    } catch (AcsJNullPointerEx e) {
        AcsJInvalidComponentSpecEx ex = new AcsJInvalidComponentSpecEx(e);
        throw ex;
    } catch (AcsJBadParameterEx e) {
        AcsJInvalidComponentSpecEx ex = new AcsJInvalidComponentSpecEx(e);
        throw ex;
    }
    // check handle and NONE permissions
    // Throws AcsJNoPermissionEx that is let flying up
    securityCheck(id, AccessRights.NONE);
    /****************************************************************/
    /// @todo temporary quick implementation (does not look in the CDB if component is not activated)
    String name = extractName(targetComponentURI);
    int h = 0;
    ComponentInfo targetComponentInfo = null;
    componentsLock.lock();
    try {
        h = components.first();
        while (h != 0) {
            ComponentInfo componentInfo = (ComponentInfo) components.get(h);
            if (componentInfo.getName().equals(name)) {
                targetComponentInfo = componentInfo;
                break;
            }
            h = components.next(h);
        }
    } finally {
        componentsLock.unlock();
    }
    // if not found, check the CDB
    if (targetComponentInfo == null) {
        DAOProxy componentsDAO = getComponentsDAOProxy();
        if (componentsDAO != null) {
            // read container name
            String containerName = readStringCharacteristics(componentsDAO, name + "/Container", true);
            if (containerName != null)
                componentSpec.setContainer(containerName);
        }
    } else
        componentSpec.setContainer(targetComponentInfo.getContainerName());
    // failed to detemine a target container
    if (componentSpec.getContainer().equals(ComponentSpec.COMPSPEC_ANY)) {
        AcsJIncompleteComponentSpecEx ex = new AcsJIncompleteComponentSpecEx();
        ex.setCURL(name);
        ex.setContainerName(componentSpec.getContainer());
        throw ex;
    }
    // request for component
    // same exceptions are let flying up.
    ComponentInfo componentInfo = null;
    try {
        componentInfo = internalRequestDynamicComponent(id, componentSpec);
    } catch (AcsJSyncLockFailedEx e) {
        AcsJCannotGetComponentEx ex = new AcsJCannotGetComponentEx();
        ex.setCURL(name);
        ex.setReason("Failed to get Synchronisation lock");
        throw ex;
    }
    // update default components table
    if (componentInfo != null && markAsDefault) {
        synchronized (defaultComponents) {
            // !!! ACID 3
            executeCommand(new DefaultComponentCommandPut(componentInfo.getType(), componentInfo));
        //defaultComponents.put(componentInfo.getType(), componentInfo.getName());
        }
        logger.log(Level.INFO, "'" + componentInfo.getName() + "' has been marked as a default component of type '" + componentInfo.getType() + "'.");
    }
    if (componentInfo == null) {
        AcsJCannotGetComponentEx ex = new AcsJCannotGetComponentEx();
        ex.setCURL(name);
        throw ex;
    }
    return componentInfo;
}

Example 32 with ComponentInfo

use of com.cosylab.acs.maci.ComponentInfo in project ACS by ACS-Community.

the class ManagerImpl method registerComponent.

/**
	 * @see com.cosylab.acs.maci.Manager#registerComponent(int, URI, String, Component)
	 */
public int registerComponent(int id, URI curl, String type, Component component) throws AcsJNoPermissionEx, AcsJBadParameterEx {
    // check for null
    if (curl == null) {
        AcsJBadParameterEx af = new AcsJBadParameterEx();
        af.setParameter("curl");
        af.setParameterValue("null");
        throw af;
    }
    if (type == null) {
        AcsJBadParameterEx af = new AcsJBadParameterEx();
        af.setParameter("type");
        af.setParameterValue("null");
        throw af;
    }
    if (component == null) {
        AcsJBadParameterEx af = new AcsJBadParameterEx();
        af.setParameter("component");
        af.setParameterValue("null");
        throw af;
    }
    // Just rethrow the exception
    try {
        checkCURL(curl, false);
    } catch (AcsJBadParameterEx e) {
        throw e;
    }
    // check handle and REGISTER_COMPONENT permissions
    securityCheck(id, AccessRights.REGISTER_COMPONENT);
    /****************************************************************/
    // extract name
    String name = extractName(curl);
    int h = 0;
    componentsLock.lock();
    try {
        // check if Component is already registred
        // if it is, return existing info
        h = components.first();
        while (h != 0) {
            ComponentInfo registeredComponentInfo = (ComponentInfo) components.get(h);
            if (registeredComponentInfo.getName().equals(name)) {
                if (registeredComponentInfo.getType().equals(type)) {
                    // it is already activated, add manager as an owner and return handle
                    if (!registeredComponentInfo.getClients().contains(this.getHandle())) {
                        // ACID - !!!
                        executeCommand(new ComponentCommandClientAdd(registeredComponentInfo.getHandle() & HANDLE_MASK, this.getHandle()));
                    //registredComponentInfo.getClients().add(this.getHandle());
                    }
                    return registeredComponentInfo.getHandle();
                } else {
                    AcsJNoPermissionEx npe = new AcsJNoPermissionEx();
                    npe.setReason("Component with name '" + name + "' but different type already registered.");
                    npe.setID(HandleHelper.toString(id));
                    npe.setProtectedResource(name);
                    throw npe;
                }
            }
            h = components.next(h);
        }
        // allocate new handle
        // !!! ACID 2
        Integer objHandle = (Integer) executeCommand(new ComponentCommandAllocate());
        int handle;
        //int handle = components.allocate();
        if (objHandle == null || (handle = objHandle.intValue()) == 0) {
            NoResourcesException af = new NoResourcesException("Generation of new handle failed, too many components registred.");
            throw af;
        }
        // generate external handle
        h = handle | COMPONENT_MASK;
        // add generated key
        h |= (random.nextInt(0x100)) << 16;
        // create new component info
        ComponentInfo componentInfo = new ComponentInfo(h, name, type, null, component);
        // no container
        componentInfo.setContainer(0);
        componentInfo.setContainerName(null);
        // components can register other components
        componentInfo.setAccessRights(AccessRights.REGISTER_COMPONENT);
        // set Manager as client of the Component (to keep it immortal)
        componentInfo.getClients().add(this.getHandle());
        // set interfaces
        // NOTE: this could block since it is a remote call
        componentInfo.setInterfaces(component.implementedInterfaces());
        // !!! ACID - register AddComponentCommand
        executeCommand(new ComponentCommandSet(handle, componentInfo));
    // store info
    //components.set(handle, componentInfo);
    } finally {
        componentsLock.unlock();
    }
    // bind to remote directory
    // NOTE: this could block since it is a remote call
    //bind(convertToHiearachical(name), "O", component);
    logger.log(Level.INFO, "Component '" + name + "' registered.");
    return h;
}

Example 33 with ComponentInfo

use of com.cosylab.acs.maci.ComponentInfo in project ACS by ACS-Community.

the class ManagerImpl method makeComponentImmortal.

/**
	 * @see com.cosylab.acs.maci.Manager#makeComponentImmortal(int, java.net.URI, boolean)
	 */
public void makeComponentImmortal(int id, URI curl, boolean immortalState) throws AcsJCannotGetComponentEx, AcsJNoPermissionEx, AcsJBadParameterEx {
    // extract name
    String name = extractName(curl);
    // let same exception flying up
    try {
        checkCURL(curl);
    } catch (AcsJBadParameterEx e) {
        throw e;
    }
    // check handle and NONE permissions
    securityCheck(id, AccessRights.NONE);
    /****************************************************************/
    int h;
    ComponentInfo componentInfo = null;
    componentsLock.lock();
    try {
        h = components.first();
        while (h != 0) {
            componentInfo = (ComponentInfo) components.get(h);
            if (componentInfo.getName().equals(name)) {
                h = componentInfo.getHandle();
                break;
            }
            h = components.next(h);
        }
        // component not yet activated check
        if (h == 0) {
            NoResourcesException af = new NoResourcesException("Component not activated.");
            throw af;
        }
        // if not an owner of the component, check administrator rights
        if (!componentInfo.getClients().contains(id)) {
            securityCheck(id, AccessRights.INTROSPECT_MANAGER);
        }
        if (immortalState) {
            // finally, add manager as an owner
            if (!componentInfo.getClients().contains(this.getHandle())) {
                // ACID - !!!
                executeCommand(new ComponentCommandClientAdd(componentInfo.getHandle() & HANDLE_MASK, this.getHandle()));
            //componentInfo.getClients().add(this.getHandle());
            }
            logger.log(Level.INFO, "Component " + name + " was made immortal.");
        }
    } finally {
        componentsLock.unlock();
    }
    // this must be done outside component sync. block
    if (!immortalState) {
        logger.log(Level.INFO, "Component " + name + " was made mortal.");
        // finally, can happen that the manager is the only owner
        // so release could be necessary
        internalReleaseComponent(this.getHandle(), h, false);
    }
/****************************************************************/
}

Example 34 with ComponentInfo

use of com.cosylab.acs.maci.ComponentInfo in project ACS by ACS-Community.

the class ManagerImpl method containerInternalStateMerge.

/**
	 * Retrieve container's internal state and merge it with manager's.
	 * NOTE: this method should not be run in separate thread since states
	 * should be merged synchronously.
	 * Merge is split to two parts:
	 *
	 * <h2>Container -> Manager</h2>
	 *
	 * If container component handle is also allocated in manager state and components information match,
	 * then we have a perfect fit and no action is required. If they do not match, container is rejected.
	 * If container component handle is not allocated in the manager state and no component with
	 * same name is found in manager state, component information is transferred to the manager,
	 * owtherwise container is rejected.
	 * <p>
	 * NOTE: The second option allows components without owners to be activated.
	 * </p>
	 * <p>
	 * NOTE: Container is rejected due to its state inconsistency which will probably cause
	 * problems in the future. Container has to be restarted.<br/>
	 * (A more sophisticated algorithm could give manager "the power to shape up" container state.)
	 * </p>
	 * <p>
	 * NOTE: Container -> Manager has to work in the way transactions do, i.e. in case of rejection
	 * manager state should no be affected.
	 * </p>
	 *
	 * <h2>Manager -> Container</h2>
	 *
	 * If <code>recoverContainer</code> is <code>true</code>, all components known to the manager to
	 * be activated on this particular container and listed as activated by the container
	 * will be marked as unavailable to be reactivated later by
	 * <code>containerPostLoginActivation</code> method.
	 * If <code>recoverContainer</code> is <code>false</code>, all there information will be discared
	 * (components removed from container component list, deallocated, and removed from their owners list).
	 *
	 * @param	containerInfo	container info for which to perform merge, non-<code>null</code>.
	 * @param	recoverContainer	if <code>true</code> manager state will be 'transferred' to container.
	 */
private void containerInternalStateMerge(ContainerInfo containerInfo, boolean recoverContainer) throws AcsJNoPermissionEx {
    assert (containerInfo != null);
    // firstly, query containers state
    ComponentInfo[] infos = null;
    try {
        infos = containerInfo.getContainer().get_component_info(new int[0]);
    } catch (Throwable ex) {
        logger.log(Level.SEVERE, "Failed to query state of container '" + containerInfo.getName() + "'.", ex);
    }
    boolean requireTopologySort = false;
    // copy elements
    IntArray managerContainersComponents;
    synchronized (containerInfo.getComponents()) {
        managerContainersComponents = new IntArray(containerInfo.getComponents().toArray());
    }
    if (infos != null && infos.length > 0) {
        componentsLock.lock();
        try {
            // phase 1: check for state consistency
            for (int i = 0; i < infos.length; i++) {
                // check if info is valid
                if (infos[i].getHandle() == 0 || (infos[i].getHandle() & COMPONENT_MASK) != COMPONENT_MASK || infos[i].getName() == null || infos[i].getType() == null || infos[i].getCode() == null || infos[i].getComponent() == null || infos[i].getContainer() == 0 || infos[i].getInterfaces() == null) {
                    // bad info
                    // NO_PERMISSION
                    AcsJNoPermissionEx npe = new AcsJNoPermissionEx();
                    npe.setReason("Inconsistent container state - component information is not valid, rejecting container.");
                    npe.setID(containerInfo.getName());
                    npe.setProtectedResource(infos[i].getName());
                    throw npe;
                }
                int handle = infos[i].getHandle() & HANDLE_MASK;
                if (components.isAllocated(handle)) {
                    // handle is allocated
                    // check if components information match
                    ComponentInfo componentInfo = (ComponentInfo) components.get(handle);
                    if (componentInfo == null || componentInfo.getHandle() != infos[i].getHandle() || !componentInfo.getName().equals(infos[i].getName()) || (componentInfo.getContainer() != 0 && componentInfo.getContainer() != infos[i].getContainer())) {
                        // information does not match, reject container
                        // NO_PERMISSION
                        AcsJNoPermissionEx npe = new AcsJNoPermissionEx();
                        npe.setReason("Inconsistent container state - components information do not match, rejecting container.");
                        npe.setID(containerInfo.getName());
                        if (componentInfo != null) {
                            npe.setProtectedResource(componentInfo.getName());
                        }
                        throw npe;
                    }
                } else {
                    // handle is not allocated
                    // check if component with same name is already registered
                    int h = components.first();
                    while (h != 0) {
                        ComponentInfo componentInfo = (ComponentInfo) components.get(h);
                        if (componentInfo.getName().equals(infos[i].getName())) {
                            // yes it does, reject container
                            // NO_PERMISSION
                            AcsJNoPermissionEx npe = new AcsJNoPermissionEx();
                            npe.setReason("Inconsistent container state - component with name '" + componentInfo.getName() + "' already registered with different handle, rejecting container.");
                            npe.setID(containerInfo.getName());
                            npe.setProtectedResource(componentInfo.getName());
                            throw npe;
                        }
                        h = components.next(h);
                    }
                }
            }
            // phase 2: do the transfer
            for (int i = 0; i < infos.length; i++) {
                int handle = infos[i].getHandle() & HANDLE_MASK;
                if (components.isAllocated(handle)) {
                    // handle is allocated and info match
                    // just in case component is not persistent, update the reference
                    // is always non-null - checked already above
                    ComponentInfo componentInfo = (ComponentInfo) components.get(handle);
                    componentInfo.setComponent(infos[i].getComponent());
                    componentInfo.setContainer(infos[i].getContainer());
                    componentInfo.setContainerName(infos[i].getContainerName());
                    // remove if unavailable and notify
                    synchronized (unavailableComponents) {
                        // !!! ACID 3
                        executeCommand(new UnavailableComponentCommandRemove(componentInfo.getName()));
                    //unavailableComponents.remove(componentInfo.getName());
                    }
                    int[] clients = componentInfo.getClients().toArray();
                    notifyComponentAvailable(0, clients, new ComponentInfo[] { componentInfo });
                } else {
                    // handle is not allocated
                    // transfer component
                    // create new ComponentInfo (we do not trust containers)
                    ComponentInfo info = new ComponentInfo(infos[i].getHandle(), infos[i].getName(), infos[i].getType(), infos[i].getCode(), infos[i].getComponent());
                    info.setContainer(infos[i].getContainer());
                    info.setContainerName(infos[i].getContainerName());
                    info.setInterfaces(infos[i].getInterfaces());
                    info.setAccessRights(0);
                    // if it has a CDB entry or if there is no CDB available
                    if (!hasCDBEntry(info)) {
                        info.setDynamic(true);
                        info.setDynamicContainerName(containerInfo.getName());
                    }
                    // !!! ACID 3
                    // allocate and store
                    executeCommand(new ComponentCommandAllocateHandle(handle));
                    //components.allocate(handle);
                    executeCommand(new ComponentCommandSet(handle, info));
                    //components.set(handle, info);
                    requireTopologySort = true;
                }
                // we handled this component
                managerContainersComponents.remove(infos[i].getHandle());
                // add to container component list
                synchronized (containerInfo.getComponents()) {
                    // !!! ACID 3
                    if (!containerInfo.getComponents().contains(infos[i].getHandle()))
                        executeCommand(new ContainerInfoCommandComponentAdd(containerInfo.getHandle() & HANDLE_MASK, infos[i].getHandle()));
                //containerInfo.getComponents().add(infos[i].getHandle());
                }
            }
        } finally {
            componentsLock.unlock();
        }
    }
    // managerContainersComponents contains component handles not handled yet
    for (int i = 0; i < managerContainersComponents.size(); i++) {
        int componentHandle = managerContainersComponents.get(i);
        // remove component handle from container component list
        // will be added when actually activated
        // !!! ACID 3
        executeCommand(new ContainerInfoCommandComponentRemove(containerInfo.getHandle() & HANDLE_MASK, componentHandle));
        //containerInfo.getComponents().remove(componentHandle);
        // marked as unavailable to be reactivated later (or discarded)
        componentsLock.lock();
        try {
            int handle = componentHandle & HANDLE_MASK;
            if (components.isAllocated(handle)) {
                ComponentInfo componentInfo = (ComponentInfo) components.get(handle);
                // what if null (very not likely to happen, but possible)
                if (componentInfo == null) {
                    // internal error, this should not happen
                    logger.log(Level.SEVERE, "Internal state is not consistent (no ComponentInfo).");
                    continue;
                }
                // notify component owners about Component deactivation
                makeUnavailable(componentInfo);
                if (!recoverContainer) {
                    // discard all Component information
                    // remove from its owners list ...
                    int[] owners = componentInfo.getClients().toArray();
                    for (int j = 0; j < owners.length; j++) removeComponentOwner(componentHandle, owners[j]);
                    // !!! ACID 3
                    // ... and deallocate
                    executeCommand(new ComponentCommandDeallocate(handle, componentInfo.getHandle(), WhyUnloadedReason.REMOVED));
                    //components.deallocate(handle);
                    requireTopologySort = true;
                }
            } else {
                // internal error, this should not happen
                logger.log(Level.SEVERE, "Internal state is not consistent.");
            }
        } finally {
            componentsLock.unlock();
        }
    }
    if (requireTopologySort)
        topologySortManager.notifyTopologyChange(containerInfo.getHandle());
}

Example 35 with ComponentInfo

use of com.cosylab.acs.maci.ComponentInfo in project ACS by ACS-Community.

the class ManagerImpl method internalRestartComponent.

/**
	 * Internal method for restarting components.
	 *
	 * @param	owner	owner of the component.
	 * @param	curl	CURL of the component to be restarted.
	 * @return			Newly restarted component, <code>null</code> if failed.
	 */
private Component internalRestartComponent(int owner, URI curl) throws AcsJNoPermissionEx {
    // resolve handle from curl
    int h = 0;
    String name = extractName(curl);
    componentsLock.lock();
    try {
        h = components.first();
        while (h != 0) {
            ComponentInfo componentInfo = (ComponentInfo) components.get(h);
            if (componentInfo.getName().equals(name)) {
                h = componentInfo.getHandle();
                break;
            }
            h = components.next(h);
        }
    } finally {
        componentsLock.unlock();
    }
    // if found, delegate operation, otherwise do nothing
    if (h != 0)
        return internalRestartComponent(owner, h);
    else
        return null;
}