Example usage for org.apache.zookeeper KeeperException getResults

Introduction

In this page you can find the example usage for org.apache.zookeeper KeeperException getResults.

Prototype

public List<OpResult> getResults() 

Source Link

Document

If this exception was thrown by a multi-request then the (partial) results and error codes can be retrieved using this getter.

Usage

From source file:com.twitter.distributedlog.impl.federated.FederatedZKLogMetadataStore.java

License:Apache License

void createLogInNamespaceSync(URI uri, String logName)
        throws InterruptedException, IOException, KeeperException {
    Transaction txn = zkc.get().transaction();
    // we don't have the zk version yet. set it to 0 instead of -1, to prevent non CAS operation.
    int zkVersion = null == zkSubnamespacesVersion.get() ? 0 : zkSubnamespacesVersion.get();
    txn.setData(zkSubnamespacesPath, uri.getPath().getBytes(UTF_8), zkVersion);
    String logPath = uri.getPath() + "/" + logName;
    txn.create(logPath, new byte[0], zkc.getDefaultACL(), CreateMode.PERSISTENT);
    try {//from w ww . j  a v a  2s  .  c o  m
        txn.commit();
        // if the transaction succeed, the zk version is advanced
        setZkSubnamespacesVersion(zkVersion + 1);
    } catch (KeeperException ke) {
        List<OpResult> opResults = ke.getResults();
        OpResult createResult = opResults.get(1);
        if (createResult instanceof OpResult.ErrorResult) {
            OpResult.ErrorResult errorResult = (OpResult.ErrorResult) createResult;
            if (Code.NODEEXISTS.intValue() == errorResult.getErr()) {
                throw new LogExistsException("Log " + logName + " already exists");
            }
        }
        OpResult setResult = opResults.get(0);
        if (setResult instanceof OpResult.ErrorResult) {
            OpResult.ErrorResult errorResult = (OpResult.ErrorResult) setResult;
            if (Code.BADVERSION.intValue() == errorResult.getErr()) {
                throw KeeperException.create(Code.BADVERSION);
            }
        }
        throw new ZKException("ZK exception in creating log " + logName + " in " + uri, ke);
    }
}

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From source file:org.midonet.midolman.state.ZkManager.java

License:Apache License

private String getMultiErrorMessage(List<Op> ops, KeeperException ex) {
    List<OpResult> results = ex.getResults();
    if (results == null || results.isEmpty()) {
        return "executing multi ops: " + ex.getMessage();
    }/*  w  w w  .  j  a v a2s.  c o  m*/

    StringBuilder msg = new StringBuilder("executing multi ops: ");

    // Use counter to iterate through op and result lists in parallel.
    for (int i = 0; i < results.size(); i++) {
        OpResult result = results.get(i);
        if (result instanceof OpResult.ErrorResult) {
            int errorCode = ((OpResult.ErrorResult) result).getErr();
            if (errorCode != 0) {
                Op operation = ops.get(i);
                msg.append("\r\n\t\t");
                msg.append(operation.getPath());
                msg.append(" failed with error code: ");
                msg.append(errorCode);
            }
        }
    }

    return msg.toString();
}

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From source file:org.midonet.midolman.state.ZkNatBlockAllocator.java

License:Apache License

private void ensureIpPath(final NatRange natRange, final Callback<NatBlock, Exception> callback) {
    String path = paths.getNatIpPath(natRange.deviceId, natRange.ip);
    final List<Op> dirs = new ArrayList<>(NatBlock.TOTAL_BLOCKS + 1);
    dirs.add(Op.create(path, null, acl, CreateMode.PERSISTENT));
    initializeBlockDirectories(dirs, natRange);
    reactor.submit(new Runnable() {
        @Override/* ww  w  .j  a  va 2s  . c  om*/
        public void run() {
            try {
                zk.getZooKeeper().multi(dirs);
                allocateBlockInRange(natRange, callback);
            } catch (InterruptedException ignored) {
            } catch (KeeperException e) {
                int error = e.getResults().get(0).getType();
                if (error == KeeperException.Code.NODEEXISTS.intValue()) {
                    allocateBlockInRange(natRange, callback);
                } else {
                    callback.onError(e);
                }
            }
        }
    });
}

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From source file:org.midonet.midolman.state.ZkUtil.java

License:Apache License

/**
 * Retrieve the Op object corresponding to the erroneous OpResult.
 * Error results and ops arguments must have the same size.
 *
 * @param ex KeeperException to get the OpResult list from
 * @param ops Op list submitted to mutli
 * @return Op that failed//  w  ww. ja  v  a  2  s.c o  m
 */
public static Op getErrorOp(KeeperException ex, List<Op> ops) {
    Preconditions.checkNotNull(ex);
    Preconditions.checkNotNull(ops);
    return getErrorOp(ex.getResults(), ops);
}

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