Examples with ReplyHeader org.apache.zookeeper.proto.ReplyHeader used on opensource projects

Example 26 with ReplyHeader

use of org.apache.zookeeper.proto.ReplyHeader in project zookeeper by apache.

the class ZooKeeper method getChildren.

/**
     * The asynchronous version of getChildren.
     *
     * @see #getChildren(String, Watcher)
     */
public void getChildren(final String path, Watcher watcher, ChildrenCallback cb, Object ctx) {
    final String clientPath = path;
    PathUtils.validatePath(clientPath);
    // the watch contains the un-chroot path
    WatchRegistration wcb = null;
    if (watcher != null) {
        wcb = new ChildWatchRegistration(watcher, clientPath);
    }
    final String serverPath = prependChroot(clientPath);
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.getChildren);
    GetChildrenRequest request = new GetChildrenRequest();
    request.setPath(serverPath);
    request.setWatch(watcher != null);
    GetChildrenResponse response = new GetChildrenResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb, clientPath, serverPath, ctx, wcb);
}

Example 27 with ReplyHeader

use of org.apache.zookeeper.proto.ReplyHeader in project zookeeper by apache.

the class ZooKeeperAdmin method reconfigure.

/**
     * Reconfigure - add/remove servers. Return the new configuration.
     * @param joiningServers
     *                a comma separated list of servers being added (incremental reconfiguration)
     * @param leavingServers
     *                a comma separated list of servers being removed (incremental reconfiguration)
     * @param newMembers
     *                a comma separated list of new membership (non-incremental reconfiguration)
     * @param fromConfig
     *                version of the current configuration
     *                (optional - causes reconfiguration to throw an exception if configuration is no longer current)
     * @param stat the stat of /zookeeper/config znode will be copied to this
     *             parameter if not null.
     * @return new configuration
     * @throws InterruptedException If the server transaction is interrupted.
     * @throws KeeperException If the server signals an error with a non-zero error code.
     */
public byte[] reconfigure(String joiningServers, String leavingServers, String newMembers, long fromConfig, Stat stat) throws KeeperException, InterruptedException {
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.reconfig);
    ReconfigRequest request = new ReconfigRequest(joiningServers, leavingServers, newMembers, fromConfig);
    GetDataResponse response = new GetDataResponse();
    ReplyHeader r = cnxn.submitRequest(h, request, response, null);
    if (r.getErr() != 0) {
        throw KeeperException.create(KeeperException.Code.get(r.getErr()), "");
    }
    if (stat != null) {
        DataTree.copyStat(response.getStat(), stat);
    }
    return response.getData();
}

Example 28 with ReplyHeader

use of org.apache.zookeeper.proto.ReplyHeader in project zookeeper by apache.

the class ZooKeeper method setACL.

/**
     * The asynchronous version of setACL.
     *
     * @see #setACL(String, List, int)
     */
public void setACL(final String path, List<ACL> acl, int version, StatCallback cb, Object ctx) {
    final String clientPath = path;
    PathUtils.validatePath(clientPath);
    final String serverPath = prependChroot(clientPath);
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.setACL);
    SetACLRequest request = new SetACLRequest();
    request.setPath(serverPath);
    request.setAcl(acl);
    request.setVersion(version);
    SetACLResponse response = new SetACLResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb, clientPath, serverPath, ctx, null);
}

Example 29 with ReplyHeader

use of org.apache.zookeeper.proto.ReplyHeader in project zookeeper by apache.

the class ZooKeeper method create.

/**
     * same as {@link #create(String, byte[], List, CreateMode, Stat)} but
     * allows for specifying a TTL when mode is {@link CreateMode#PERSISTENT_WITH_TTL}
     * or {@link CreateMode#PERSISTENT_SEQUENTIAL_WITH_TTL}. If the znode has not been modified
     * within the given TTL, it will be deleted once it has no children. The TTL unit is
     * milliseconds and must be greater than 0 and less than or equal to
     * {@link EphemeralType#MAX_TTL}.
     */
public String create(final String path, byte[] data, List<ACL> acl, CreateMode createMode, Stat stat, long ttl) throws KeeperException, InterruptedException {
    final String clientPath = path;
    PathUtils.validatePath(clientPath, createMode.isSequential());
    EphemeralType.validateTTL(createMode, ttl);
    final String serverPath = prependChroot(clientPath);
    RequestHeader h = new RequestHeader();
    setCreateHeader(createMode, h);
    Create2Response response = new Create2Response();
    if (acl != null && acl.size() == 0) {
        throw new KeeperException.InvalidACLException();
    }
    Record record = makeCreateRecord(createMode, serverPath, data, acl, ttl);
    ReplyHeader r = cnxn.submitRequest(h, record, response, null);
    if (r.getErr() != 0) {
        throw KeeperException.create(KeeperException.Code.get(r.getErr()), clientPath);
    }
    if (stat != null) {
        DataTree.copyStat(response.getStat(), stat);
    }
    if (cnxn.chrootPath == null) {
        return response.getPath();
    } else {
        return response.getPath().substring(cnxn.chrootPath.length());
    }
}

Example 30 with ReplyHeader

use of org.apache.zookeeper.proto.ReplyHeader in project zookeeper by apache.

the class ZooKeeper method getConfig.

/**
     * The asynchronous version of getConfig.
     *
     * @see #getConfig(Watcher, Stat)
     */
public void getConfig(Watcher watcher, DataCallback cb, Object ctx) {
    final String configZnode = ZooDefs.CONFIG_NODE;
    // the watch contains the un-chroot path
    WatchRegistration wcb = null;
    if (watcher != null) {
        wcb = new DataWatchRegistration(watcher, configZnode);
    }
    RequestHeader h = new RequestHeader();
    h.setType(ZooDefs.OpCode.getData);
    GetDataRequest request = new GetDataRequest();
    request.setPath(configZnode);
    request.setWatch(watcher != null);
    GetDataResponse response = new GetDataResponse();
    cnxn.queuePacket(h, new ReplyHeader(), request, response, cb, configZnode, configZnode, ctx, wcb);
}