Examples with NetView org.apache.geode.distributed.internal.membership.NetView used on opensource projects

Example 56 with NetView

use of org.apache.geode.distributed.internal.membership.NetView in project geode by apache.

the class GMSJoinLeave method processLeaveRequest.

/**
   * Process a Leave request from another member. This may cause this member to become the new
   * membership coordinator. If this is the coordinator a new view will be triggered.
   *
   * @param incomingRequest the request to be processed
   */
private void processLeaveRequest(LeaveRequestMessage incomingRequest) {
    logger.info("received leave request from {} for {}", incomingRequest.getSender(), incomingRequest.getMemberID());
    NetView v = currentView;
    if (v == null) {
        recordViewRequest(incomingRequest);
        return;
    }
    InternalDistributedMember mbr = incomingRequest.getMemberID();
    if (logger.isDebugEnabled()) {
        logger.debug("JoinLeave.processLeaveRequest invoked.  isCoordinator=" + isCoordinator + "; isStopping=" + isStopping + "; cancelInProgress=" + services.getCancelCriterion().isCancelInProgress());
    }
    if (!v.contains(mbr) && mbr.getVmViewId() < v.getViewId()) {
        logger.debug("ignoring leave request from old member");
        return;
    }
    if (incomingRequest.getMemberID().equals(this.localAddress)) {
        logger.info("I am being told to leave the distributed system by {}", incomingRequest.getSender());
        forceDisconnect(incomingRequest.getReason());
        return;
    }
    if (!isCoordinator && !isStopping && !services.getCancelCriterion().isCancelInProgress()) {
        logger.debug("Checking to see if I should become coordinator");
        NetView check = new NetView(v, v.getViewId() + 1);
        check.remove(incomingRequest.getMemberID());
        synchronized (removedMembers) {
            check.removeAll(removedMembers);
            check.addCrashedMembers(removedMembers);
        }
        synchronized (leftMembers) {
            leftMembers.add(mbr);
            check.removeAll(leftMembers);
        }
        if (check.getCoordinator().equals(localAddress)) {
            synchronized (viewInstallationLock) {
                becomeCoordinator(incomingRequest.getMemberID());
            }
        }
    } else {
        if (!isStopping && !services.getCancelCriterion().isCancelInProgress()) {
            recordViewRequest(incomingRequest);
            this.viewProcessor.processLeaveRequest(incomingRequest.getMemberID());
            this.prepareProcessor.processLeaveRequest(incomingRequest.getMemberID());
        }
    }
}

Example 57 with NetView

use of org.apache.geode.distributed.internal.membership.NetView in project geode by apache.

the class GMSJoinLeave method processViewMessage.

private void processViewMessage(final InstallViewMessage m) {
    NetView view = m.getView();
    // If our current view doesn't contaion sender then we wanrt to ignore that view.
    if (currentView != null && !currentView.contains(m.getSender())) {
        // this may happen when we locator re-join and it take over coordinator's responsibility.
        if (this.preparedView == null || !this.preparedView.contains(m.getSender())) {
            logger.info("Ignoring the view {} from member {}, which is not in my current view {} ", view, m.getSender(), currentView);
            return;
        }
    }
    if (currentView != null && view.getViewId() < currentView.getViewId()) {
        // ignore old views
        ackView(m);
        return;
    }
    boolean viewContainsMyUnjoinedAddress = false;
    if (!this.isJoined) {
        // should install the view so join() can finish its work
        for (InternalDistributedMember mbr : view.getMembers()) {
            if (localAddress.compareTo(mbr) == 0) {
                viewContainsMyUnjoinedAddress = true;
                break;
            }
        }
    }
    if (m.isPreparing()) {
        if (this.preparedView != null && this.preparedView.getViewId() >= view.getViewId()) {
            services.getMessenger().send(new ViewAckMessage(m.getSender(), this.preparedView));
        } else {
            this.preparedView = view;
            if (viewContainsMyUnjoinedAddress) {
                // this will notifyAll the joinResponse
                installView(view);
            }
            ackView(m);
        }
    } else {
        // !preparing
        if (isJoined && currentView != null && !view.contains(this.localAddress)) {
            logger.fatal("This member is no longer in the membership view.  My ID is {} and the new view is {}", localAddress, view);
            forceDisconnect("This node is no longer in the membership view");
        } else {
            if (isJoined || viewContainsMyUnjoinedAddress) {
                installView(view);
            }
            if (!m.isRebroadcast()) {
                // no need to ack a rebroadcast view
                ackView(m);
            }
        }
    }
}

Example 58 with NetView

use of org.apache.geode.distributed.internal.membership.NetView in project geode by apache.

the class GMSJoinLeave method findCoordinator.

/**
   * This contacts the locators to find out who the current coordinator is. All locators are
   * contacted. If they don't agree then we choose the oldest coordinator and return it.
   */
private boolean findCoordinator() {
    SearchState state = searchState;
    assert this.localAddress != null;
    // the coordinator
    if (!state.hasContactedAJoinedLocator && state.view != null) {
        return findCoordinatorFromView();
    }
    String dhalgo = services.getConfig().getDistributionConfig().getSecurityUDPDHAlgo();
    FindCoordinatorRequest request = new FindCoordinatorRequest(this.localAddress, state.alreadyTried, state.viewId, services.getMessenger().getPublicKey(localAddress), services.getMessenger().getRequestId(), dhalgo);
    Set<InternalDistributedMember> possibleCoordinators = new HashSet<InternalDistributedMember>();
    Set<InternalDistributedMember> coordinatorsWithView = new HashSet<InternalDistributedMember>();
    long giveUpTime = System.currentTimeMillis() + ((long) services.getConfig().getLocatorWaitTime() * 1000L);
    int connectTimeout = (int) services.getConfig().getMemberTimeout() * 2;
    boolean anyResponses = false;
    logger.debug("sending {} to {}", request, locators);
    state.hasContactedAJoinedLocator = false;
    state.locatorsContacted = 0;
    do {
        for (InetSocketAddress addr : locators) {
            try {
                Object o = tcpClientWrapper.sendCoordinatorFindRequest(addr, request, connectTimeout);
                FindCoordinatorResponse response = (o instanceof FindCoordinatorResponse) ? (FindCoordinatorResponse) o : null;
                if (response != null) {
                    if (response.getRejectionMessage() != null) {
                        throw new GemFireConfigException(response.getRejectionMessage());
                    }
                    setCoordinatorPublicKey(response);
                    state.locatorsContacted++;
                    if (!state.hasContactedAJoinedLocator && response.getSenderId() != null && response.getSenderId().getVmViewId() >= 0) {
                        logger.debug("Locator's address indicates it is part of a distributed system " + "so I will not become membership coordinator on this attempt to join");
                        state.hasContactedAJoinedLocator = true;
                    }
                    if (response.getCoordinator() != null) {
                        anyResponses = true;
                        NetView v = response.getView();
                        int viewId = v == null ? -1 : v.getViewId();
                        if (viewId > state.viewId) {
                            state.viewId = viewId;
                            state.view = v;
                            state.registrants.clear();
                            if (response.getRegistrants() != null) {
                                state.registrants.addAll(response.getRegistrants());
                            }
                        }
                        if (viewId > -1) {
                            coordinatorsWithView.add(response.getCoordinator());
                        }
                        possibleCoordinators.add(response.getCoordinator());
                    }
                }
            } catch (IOException | ClassNotFoundException problem) {
            }
        }
    } while (!anyResponses && System.currentTimeMillis() < giveUpTime);
    if (possibleCoordinators.isEmpty()) {
        return false;
    }
    if (coordinatorsWithView.size() > 0) {
        // lets check current coordinators in view only
        possibleCoordinators = coordinatorsWithView;
    }
    Iterator<InternalDistributedMember> it = possibleCoordinators.iterator();
    if (possibleCoordinators.size() == 1) {
        state.possibleCoordinator = it.next();
    } else {
        InternalDistributedMember oldest = it.next();
        while (it.hasNext()) {
            InternalDistributedMember candidate = it.next();
            if (oldest.compareTo(candidate) > 0) {
                oldest = candidate;
            }
        }
        state.possibleCoordinator = oldest;
    }
    InternalDistributedMember coord = null;
    boolean coordIsNoob = true;
    for (; it.hasNext(); ) {
        InternalDistributedMember mbr = it.next();
        if (!state.alreadyTried.contains(mbr)) {
            boolean mbrIsNoob = (mbr.getVmViewId() < 0);
            if (mbrIsNoob) {
                // member has not yet joined
                if (coordIsNoob && (coord == null || coord.compareTo(mbr) > 0)) {
                    coord = mbr;
                }
            } else {
                // member has already joined
                if (coordIsNoob || mbr.getVmViewId() > coord.getVmViewId()) {
                    coord = mbr;
                    coordIsNoob = false;
                }
            }
        }
    }
    return true;
}

Example 59 with NetView

use of org.apache.geode.distributed.internal.membership.NetView in project geode by apache.

the class GMSJoinLeave method remove.

@Override
public void remove(InternalDistributedMember m, String reason) {
    NetView v = this.currentView;
    services.getCancelCriterion().checkCancelInProgress(null);
    if (v != null && v.contains(m)) {
        Set<InternalDistributedMember> filter = new HashSet<>();
        filter.add(m);
        RemoveMemberMessage msg = new RemoveMemberMessage(v.getPreferredCoordinators(filter, getMemberID(), 5), m, reason);
        msg.setSender(this.localAddress);
        processRemoveRequest(msg);
        if (!this.isCoordinator) {
            msg.resetRecipients();
            msg.setRecipients(v.getPreferredCoordinators(Collections.emptySet(), localAddress, 10));
            services.getMessenger().send(msg);
        }
    } else {
        RemoveMemberMessage msg = new RemoveMemberMessage(m, m, reason);
        services.getMessenger().send(msg);
    }
}

Example 60 with NetView

use of org.apache.geode.distributed.internal.membership.NetView in project geode by apache.

the class GMSMembershipManager method join.

/**
   * Joins the distributed system
   *
   * @throws GemFireConfigException - configuration error
   * @throws SystemConnectException - problem joining
   */
private void join() {
    services.setShutdownCause(null);
    services.getCancelCriterion().cancel(null);
    latestViewWriteLock.lock();
    try {
        try {
            // added for bug #44373
            this.isJoining = true;
            // connect
            long start = System.currentTimeMillis();
            boolean ok = services.getJoinLeave().join();
            if (!ok) {
                throw new GemFireConfigException("Unable to join the distributed system.  " + "Operation either timed out, was stopped or Locator does not exist.");
            }
            long delta = System.currentTimeMillis() - start;
            logger.info(LogMarker.DISTRIBUTION, LocalizedMessage.create(LocalizedStrings.GroupMembershipService_JOINED_TOOK__0__MS, delta));
            NetView initialView = services.getJoinLeave().getView();
            latestView = new NetView(initialView, initialView.getViewId());
            listener.viewInstalled(latestView);
        } catch (RuntimeException ex) {
            throw ex;
        } catch (Exception ex) {
            if (ex.getCause() != null && ex.getCause().getCause() instanceof SystemConnectException) {
                throw (SystemConnectException) (ex.getCause().getCause());
            }
            throw new DistributionException(LocalizedStrings.GroupMembershipService_AN_EXCEPTION_WAS_THROWN_WHILE_JOINING.toLocalizedString(), ex);
        } finally {
            this.isJoining = false;
        }
    } finally {
        latestViewWriteLock.unlock();
    }
}