org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent.Type Java Examples

The following examples show how to use org.apache.curator.framework.recipes.cache.PathChildrenCacheEvent.Type. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: AgentServiceImpl.java    From flow-platform-x with Apache License 2.0 6 votes vote down vote up 
private void initAgentsFromZk() {
    for (Agent agent : agentDao.findAll()) {
        String zkPath = getPath(agent);
        String zkLockPath = getLockPath(agent);

        // set to offline if zk node not exist
        if (!zk.exist(zkPath)) {
            agent.setStatus(Status.OFFLINE);
            agentDao.save(agent);
            zk.delete(zkLockPath, false);
            continue;
        }

        // sync status and lock node
        Status status = getStatusFromZk(agent);
        agent.setStatus(status);
        agentDao.save(agent);
        syncLockNode(agent, Type.CHILD_ADDED);
    }
}
Example #2
Source File: AgentServiceImpl.java    From flow-platform-x with Apache License 2.0 6 votes vote down vote up 
private void initAgentsFromZk() {
    for (Agent agent : agentDao.findAll()) {
        String zkPath = getPath(agent);
        String zkLockPath = getLockPath(agent);

        // set to offline if zk node not exist
        if (!zk.exist(zkPath)) {
            agent.setStatus(Status.OFFLINE);
            agentDao.save(agent);
            zk.delete(zkLockPath, false);
            continue;
        }

        // sync status and lock node
        Status status = getStatusFromZk(agent);
        agent.setStatus(status);
        agentDao.save(agent);
        syncLockNode(agent, Type.CHILD_ADDED);
    }
}
Example #3
Source File: AgentServiceImpl.java    From flow-platform-x with Apache License 2.0 5 votes vote down vote up 
private void handleAgentStatusChange(PathChildrenCacheEvent event) {
    String path = event.getData().getPath();

    // do not handle event from lock node
    if (path.endsWith(LockPathSuffix)) {
        log.debug("Lock node '{}' event '{}' received", path, event.getType());
        return;
    }

    String agentId = getAgentIdFromPath(path);
    Agent agent = get(agentId);

    if (event.getType() == Type.CHILD_ADDED) {
        syncLockNode(agent, Type.CHILD_ADDED);
        updateAgentStatus(agent, Status.IDLE);
        log.debug("Event '{}' of agent '{}' with status '{}'", event.getType(), agent.getName(), Status.IDLE);
        return;
    }

    if (event.getType() == Type.CHILD_REMOVED) {
        syncLockNode(agent, Type.CHILD_REMOVED);
        updateAgentStatus(agent, Status.OFFLINE);
        log.debug("Event '{}' of agent '{}' with status '{}'", event.getType(), agent.getName(),
                Status.OFFLINE);
        return;
    }

    if (event.getType() == Type.CONNECTION_RECONNECTED) {
        Status status = getStatusFromZk(agent);
        updateAgentStatus(agent, status);
        log.debug("Event '{}' of agent '{}' with status '{}'", event.getType(), agent.getName(), status);
    }
}
Example #4
Source File: CuratorMaster.java    From zookeeper-book-example with Apache License 2.0 5 votes vote down vote up 
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    if(event.getType() == PathChildrenCacheEvent.Type.CHILD_REMOVED) {
        /*
         * Obtain just the worker's name
         */
        try{
            getAbsentWorkerTasks(event.getData().getPath().replaceFirst("/workers/", ""));
        } catch (Exception e) {
            LOG.error("Exception while trying to re-assign tasks", e);
        }
    } 
}
Example #5
Source File: CuratorMaster.java    From zookeeper-book-example with Apache License 2.0 5 votes vote down vote up 
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    if(event.getType() == PathChildrenCacheEvent.Type.CHILD_ADDED) {
        try{
            assignTask(event.getData().getPath().replaceFirst("/tasks/", ""),
                    event.getData().getData());
        } catch (Exception e) {
            LOG.error("Exception when assigning task.", e);
        }   
    }
}
Example #6
Source File: CuratorMasterLatch.java    From zookeeper-book-example with Apache License 2.0 5 votes vote down vote up 
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    if(event.getType() == PathChildrenCacheEvent.Type.CHILD_REMOVED) {
        /*
         * Obtain just the worker's name
         */
        try{
            getAbsentWorkerTasks(event.getData().getPath().replaceFirst("/workers/", ""));
        } catch (Exception e) {
            LOG.error("Exception while trying to re-assign tasks", e);
        }
    } 
}
Example #7
Source File: CuratorMasterLatch.java    From zookeeper-book-example with Apache License 2.0 5 votes vote down vote up 
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    if(event.getType() == PathChildrenCacheEvent.Type.CHILD_ADDED) {
        try{
            assignTask(event.getData().getPath().replaceFirst("/tasks/", ""),
                    event.getData().getData());
        } catch (Exception e) {
            LOG.error("Exception when assigning task.", e);
        }   
    }
}
Example #8
Source File: CuratorMasterSelector.java    From zookeeper-book-example with Apache License 2.0 5 votes vote down vote up 
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    if(event.getType() == PathChildrenCacheEvent.Type.CHILD_REMOVED) {
        /*
         * Obtain just the worker's name
         */
        try{
            getAbsentWorkerTasks(event.getData().getPath().replaceFirst("/workers/", ""));
        } catch (Exception e) {
            LOG.error("Exception while trying to re-assign tasks", e);
        }
    } 
}
Example #9
Source File: CuratorMasterSelector.java    From zookeeper-book-example with Apache License 2.0 5 votes vote down vote up 
public void childEvent(CuratorFramework client, PathChildrenCacheEvent event) {
    if(event.getType() == PathChildrenCacheEvent.Type.CHILD_ADDED) {
        try{
            assignTask(event.getData().getPath().replaceFirst("/tasks/", ""),
                    event.getData().getData());
        } catch (Exception e) {
            LOG.error("Exception when assigning task.", e);
        }   
    }
}