Examples with ACTIVE com.facebook.presto.spi.NodeState.ACTIVE used on opensource projects

Example 1 with ACTIVE

use of com.facebook.presto.spi.NodeState.ACTIVE in project presto by prestodb.

the class DiscoveryNodeManager method refreshNodesInternal.

private synchronized PrestoNode refreshNodesInternal() {
    lastUpdateTimestamp = System.nanoTime();
    // This is currently a blacklist.
    // TODO: make it a whitelist (a failure-detecting service selector) and maybe build in support for injecting this in airlift
    Set<ServiceDescriptor> services = serviceSelector.selectAllServices().stream().filter(service -> !failureDetector.getFailed().contains(service)).collect(toImmutableSet());
    PrestoNode currentNode = null;
    ImmutableSet.Builder<Node> activeNodesBuilder = ImmutableSet.builder();
    ImmutableSet.Builder<Node> inactiveNodesBuilder = ImmutableSet.builder();
    ImmutableSet.Builder<Node> shuttingDownNodesBuilder = ImmutableSet.builder();
    ImmutableSet.Builder<Node> coordinatorsBuilder = ImmutableSet.builder();
    ImmutableSetMultimap.Builder<ConnectorId, Node> byConnectorIdBuilder = ImmutableSetMultimap.builder();
    for (ServiceDescriptor service : services) {
        URI uri = getHttpUri(service);
        NodeVersion nodeVersion = getNodeVersion(service);
        boolean coordinator = isCoordinator(service);
        if (uri != null && nodeVersion != null) {
            PrestoNode node = new PrestoNode(service.getNodeId(), uri, nodeVersion, coordinator);
            NodeState nodeState = getNodeState(node);
            // record current node
            if (node.getNodeIdentifier().equals(nodeInfo.getNodeId())) {
                currentNode = node;
                checkState(currentNode.getNodeVersion().equals(expectedNodeVersion), "INVARIANT: current node version (%s) should be equal to %s", currentNode.getNodeVersion(), expectedNodeVersion);
            }
            switch(nodeState) {
                case ACTIVE:
                    activeNodesBuilder.add(node);
                    if (coordinator) {
                        coordinatorsBuilder.add(node);
                    }
                    // record available active nodes organized by connector id
                    String connectorIds = service.getProperties().get("connectorIds");
                    if (connectorIds != null) {
                        connectorIds = connectorIds.toLowerCase(ENGLISH);
                        for (String connectorId : CONNECTOR_ID_SPLITTER.split(connectorIds)) {
                            byConnectorIdBuilder.put(new ConnectorId(connectorId), node);
                        }
                    }
                    // always add system connector
                    byConnectorIdBuilder.put(new ConnectorId(GlobalSystemConnector.NAME), node);
                    break;
                case INACTIVE:
                    inactiveNodesBuilder.add(node);
                    break;
                case SHUTTING_DOWN:
                    shuttingDownNodesBuilder.add(node);
                    break;
                default:
                    throw new IllegalArgumentException("Unknown node state " + nodeState);
            }
        }
    }
    if (allNodes != null) {
        // log node that are no longer active (but not shutting down)
        SetView<Node> missingNodes = difference(allNodes.getActiveNodes(), Sets.union(activeNodesBuilder.build(), shuttingDownNodesBuilder.build()));
        for (Node missingNode : missingNodes) {
            log.info("Previously active node is missing: %s (last seen at %s)", missingNode.getNodeIdentifier(), missingNode.getHostAndPort());
        }
    }
    allNodes = new AllNodes(activeNodesBuilder.build(), inactiveNodesBuilder.build(), shuttingDownNodesBuilder.build());
    activeNodesByConnectorId = byConnectorIdBuilder.build();
    coordinators = coordinatorsBuilder.build();
    checkState(currentNode != null, "INVARIANT: current node not returned from service selector");
    return currentNode;
}