Examples with STATE_NOT_RECOVERED_BLOCK org.opensearch.gateway.GatewayService.STATE_NOT_RECOVERED_BLOCK used on opensource projects

Example 1 with STATE_NOT_RECOVERED_BLOCK

use of org.opensearch.gateway.GatewayService.STATE_NOT_RECOVERED_BLOCK in project OpenSearch by opensearch-project.

the class JoinTaskExecutor method execute.

@Override
public ClusterTasksResult<Task> execute(ClusterState currentState, List<Task> joiningNodes) throws Exception {
    final ClusterTasksResult.Builder<Task> results = ClusterTasksResult.builder();
    final DiscoveryNodes currentNodes = currentState.nodes();
    boolean nodesChanged = false;
    ClusterState.Builder newState;
    if (joiningNodes.size() == 1 && joiningNodes.get(0).isFinishElectionTask()) {
        return results.successes(joiningNodes).build(currentState);
    } else if (currentNodes.getMasterNode() == null && joiningNodes.stream().anyMatch(Task::isBecomeMasterTask)) {
        assert joiningNodes.stream().anyMatch(Task::isFinishElectionTask) : "becoming a master but election is not finished " + joiningNodes;
        // use these joins to try and become the master.
        // Note that we don't have to do any validation of the amount of joining nodes - the commit
        // during the cluster state publishing guarantees that we have enough
        newState = becomeMasterAndTrimConflictingNodes(currentState, joiningNodes);
        nodesChanged = true;
    } else if (currentNodes.isLocalNodeElectedMaster() == false) {
        logger.trace("processing node joins, but we are not the master. current master: {}", currentNodes.getMasterNode());
        throw new NotMasterException("Node [" + currentNodes.getLocalNode() + "] not master for join request");
    } else {
        newState = ClusterState.builder(currentState);
    }
    DiscoveryNodes.Builder nodesBuilder = DiscoveryNodes.builder(newState.nodes());
    assert nodesBuilder.isLocalNodeElectedMaster();
    Version minClusterNodeVersion = newState.nodes().getMinNodeVersion();
    Version maxClusterNodeVersion = newState.nodes().getMaxNodeVersion();
    // we only enforce major version transitions on a fully formed clusters
    final boolean enforceMajorVersion = currentState.getBlocks().hasGlobalBlock(STATE_NOT_RECOVERED_BLOCK) == false;
    // processing any joins
    Map<String, String> joiniedNodeNameIds = new HashMap<>();
    for (final Task joinTask : joiningNodes) {
        if (joinTask.isBecomeMasterTask() || joinTask.isFinishElectionTask()) {
        // noop
        } else if (currentNodes.nodeExistsWithSameRoles(joinTask.node()) && !currentNodes.nodeExistsWithBWCVersion(joinTask.node())) {
            logger.debug("received a join request for an existing node [{}]", joinTask.node());
        } else {
            final DiscoveryNode node = joinTask.node();
            try {
                if (enforceMajorVersion) {
                    ensureMajorVersionBarrier(node.getVersion(), minClusterNodeVersion);
                }
                ensureNodesCompatibility(node.getVersion(), minClusterNodeVersion, maxClusterNodeVersion);
                // we do this validation quite late to prevent race conditions between nodes joining and importing dangling indices
                // we have to reject nodes that don't support all indices we have in this cluster
                ensureIndexCompatibility(node.getVersion(), currentState.getMetadata());
                nodesBuilder.add(node);
                nodesChanged = true;
                minClusterNodeVersion = Version.min(minClusterNodeVersion, node.getVersion());
                maxClusterNodeVersion = Version.max(maxClusterNodeVersion, node.getVersion());
                if (node.isMasterNode()) {
                    joiniedNodeNameIds.put(node.getName(), node.getId());
                }
            } catch (IllegalArgumentException | IllegalStateException e) {
                results.failure(joinTask, e);
                continue;
            }
        }
        results.success(joinTask);
    }
    if (nodesChanged) {
        rerouteService.reroute("post-join reroute", Priority.HIGH, ActionListener.wrap(r -> logger.trace("post-join reroute completed"), e -> logger.debug("post-join reroute failed", e)));
        if (joiniedNodeNameIds.isEmpty() == false) {
            Set<CoordinationMetadata.VotingConfigExclusion> currentVotingConfigExclusions = currentState.getVotingConfigExclusions();
            Set<CoordinationMetadata.VotingConfigExclusion> newVotingConfigExclusions = currentVotingConfigExclusions.stream().map(e -> {
                // Update nodeId in VotingConfigExclusion when a new node with excluded node name joins
                if (CoordinationMetadata.VotingConfigExclusion.MISSING_VALUE_MARKER.equals(e.getNodeId()) && joiniedNodeNameIds.containsKey(e.getNodeName())) {
                    return new CoordinationMetadata.VotingConfigExclusion(joiniedNodeNameIds.get(e.getNodeName()), e.getNodeName());
                } else {
                    return e;
                }
            }).collect(Collectors.toSet());
            // if VotingConfigExclusions did get updated
            if (newVotingConfigExclusions.equals(currentVotingConfigExclusions) == false) {
                CoordinationMetadata.Builder coordMetadataBuilder = CoordinationMetadata.builder(currentState.coordinationMetadata()).clearVotingConfigExclusions();
                newVotingConfigExclusions.forEach(coordMetadataBuilder::addVotingConfigExclusion);
                Metadata newMetadata = Metadata.builder(currentState.metadata()).coordinationMetadata(coordMetadataBuilder.build()).build();
                return results.build(allocationService.adaptAutoExpandReplicas(newState.nodes(nodesBuilder).metadata(newMetadata).build()));
            }
        }
        return results.build(allocationService.adaptAutoExpandReplicas(newState.nodes(nodesBuilder).build()));
    } else {
        // for the joining node to finalize its join and set us as a master
        return results.build(newState.build());
    }
}