Java Request.getHdr方法代码示例

import org.apache.zookeeper.server.Request; //导入方法依赖的package包/类
public void processRequest(Request request) {
    if (!finished) {
        // Before sending the request, check if the request requires a
        // global session and what we have is a local session. If so do
        // an upgrade.
        Request upgradeRequest = null;
        try {
            upgradeRequest = zks.checkUpgradeSession(request);
        } catch (KeeperException ke) {
            if (request.getHdr() != null) {
                request.getHdr().setType(OpCode.error);
                request.setTxn(new ErrorTxn(ke.code().intValue()));
            }
            request.setException(ke);
            LOG.info("Error creating upgrade request",  ke);
        } catch (IOException ie) {
            LOG.error("Unexpected error in upgrade", ie);
        }
        if (upgradeRequest != null) {
            queuedRequests.add(upgradeRequest);
        }
        queuedRequests.add(request);
    }
}
 

import org.apache.zookeeper.server.Request; //导入方法依赖的package包/类
public void processRequest(Request request) throws RequestProcessorException {
    next.processRequest(request);

    // The only requests that should be on toBeApplied are write
    // requests, for which we will have a hdr. We can't simply use
    // request.zxid here because that is set on read requests to equal
    // the zxid of the last write op.
    if (request.getHdr() != null) {
        long zxid = request.getHdr().getZxid();
        Iterator<Proposal> iter = leader.toBeApplied.iterator();
        if (iter.hasNext()) {
            Proposal p = iter.next();
            if (p.request != null && p.request.zxid == zxid) {
                iter.remove();
                return;
            }
        }
        LOG.error("Committed request not found on toBeApplied: "
                  + request);
    }
}
 

import org.apache.zookeeper.server.Request; //导入方法依赖的package包/类
/**
 * Simply queue the request, which will be processed in FIFO order.
 */
public void processRequest(Request request) {
    if (!finished) {
        Request upgradeRequest = null;
        try {
            upgradeRequest = zks.checkUpgradeSession(request);
        } catch (KeeperException ke) {
            if (request.getHdr() != null) {
                request.getHdr().setType(OpCode.error);
                request.setTxn(new ErrorTxn(ke.code().intValue()));
            }
            request.setException(ke);
            LOG.info("Error creating upgrade request",  ke);
        } catch (IOException ie) {
            LOG.error("Unexpected error in upgrade", ie);
        }
        if (upgradeRequest != null) {
            queuedRequests.add(upgradeRequest);
        }
        queuedRequests.add(request);
    }
}
 

import org.apache.zookeeper.server.Request; //导入方法依赖的package包/类
@Override
public void processRequest(Request request)
        throws RequestProcessorException {
    // Check if this is a local session and we are trying to create
    // an ephemeral node, in which case we upgrade the session
    Request upgradeRequest = null;
    try {
        upgradeRequest = lzks.checkUpgradeSession(request);
    } catch (KeeperException ke) {
        if (request.getHdr() != null) {
            LOG.debug("Updating header");
            request.getHdr().setType(OpCode.error);
            request.setTxn(new ErrorTxn(ke.code().intValue()));
        }
        request.setException(ke);
        LOG.info("Error creating upgrade request " + ke.getMessage());
    } catch (IOException ie) {
        LOG.error("Unexpected error in upgrade", ie);
    }
    if (upgradeRequest != null) {
        nextProcessor.processRequest(upgradeRequest);
    }

    nextProcessor.processRequest(request);
}
 

import org.apache.zookeeper.server.Request; //导入方法依赖的package包/类
public void processRequest(Request request) throws RequestProcessorException {
    // LOG.warn("Ack>>> cxid = " + request.cxid + " type = " +
    // request.type + " id = " + request.sessionId);
    // request.addRQRec(">prop");


    /* In the following IF-THEN-ELSE block, we process syncs on the leader.
     * If the sync is coming from a follower, then the follower
     * handler adds it to syncHandler. Otherwise, if it is a client of
     * the leader that issued the sync command, then syncHandler won't
     * contain the handler. In this case, we add it to syncHandler, and
     * call processRequest on the next processor.
     */

    if (request instanceof LearnerSyncRequest){
        zks.getLeader().processSync((LearnerSyncRequest)request);
    } else {
        nextProcessor.processRequest(request);
        if (request.getHdr() != null) {
            // We need to sync and get consensus on any transactions
            try {
                zks.getLeader().propose(request);
            } catch (XidRolloverException e) {
                throw new RequestProcessorException(e.getMessage(), e);
            }
            syncProcessor.processRequest(request);
        }
    }
}
 

import org.apache.zookeeper.server.Request; //导入方法依赖的package包/类
@Override
public void processRequest(Request request)
        throws RequestProcessorException {
    commitProcessor.processRequest(request);
    if (request.getHdr() != null) {
        // fake propose request
        proposals.add(request);
    }
}