Examples with PhiAccrualFailureDetector io.atomix.cluster.impl.PhiAccrualFailureDetector used on opensource projects

Example 1 with PhiAccrualFailureDetector

use of io.atomix.cluster.impl.PhiAccrualFailureDetector in project atomix by atomix.

the class HeartbeatMembershipProtocol method sendHeartbeat.

/**
 * Sends a heartbeat to the given peer.
 */
private CompletableFuture<Void> sendHeartbeat(GossipMember member) {
    return bootstrapService.getMessagingService().sendAndReceive(member.address(), HEARTBEAT_MESSAGE, SERIALIZER.encode(localMember)).whenCompleteAsync((response, error) -> {
        if (error == null) {
            Collection<GossipMember> remoteMembers = SERIALIZER.decode(response);
            for (GossipMember remoteMember : remoteMembers) {
                if (!remoteMember.id().equals(localMember.id())) {
                    updateMember(remoteMember, remoteMember.id().equals(member.id()));
                }
            }
        } else {
            LOGGER.debug("{} - Sending heartbeat to {} failed", localMember.id(), member, error);
            if (member.isReachable()) {
                member.setReachable(false);
                post(new GroupMembershipEvent(GroupMembershipEvent.Type.REACHABILITY_CHANGED, member));
            }
            PhiAccrualFailureDetector failureDetector = failureDetectors.computeIfAbsent(member.id(), n -> new PhiAccrualFailureDetector());
            double phi = failureDetector.phi();
            if (phi >= config.getPhiFailureThreshold() || (phi == 0.0 && System.currentTimeMillis() - failureDetector.lastUpdated() > config.getFailureTimeout().toMillis())) {
                if (members.remove(member.id()) != null) {
                    failureDetectors.remove(member.id());
                    post(new GroupMembershipEvent(GroupMembershipEvent.Type.MEMBER_REMOVED, member));
                }
            }
        }
    }, heartbeatScheduler).exceptionally(e -> null).thenApply(v -> null);
}