Example usage for org.apache.solr.common.cloud ZkCoreNodeProps getNodeName

Introduction

In this page you can find the example usage for org.apache.solr.common.cloud ZkCoreNodeProps getNodeName.

Prototype

public String getNodeName() 

Source Link

Usage

From source file:de.qaware.chronix.storage.solr.ChronixSolrCloudStorage.java

License:Apache License

/**
 * Returns the list of shards of the default collection.
 *
 * @param zkHost            ZooKeeper URL
 * @param chronixCollection Solr collection name for chronix time series data
 * @return the list of shards of the default collection
 *///w ww.j a  v a 2  s  . co m
public List<String> getShardList(String zkHost, String chronixCollection) throws IOException {

    CloudSolrClient cloudSolrClient = new CloudSolrClient(zkHost);
    List<String> shards = new ArrayList<>();

    try {
        cloudSolrClient.connect();

        ZkStateReader zkStateReader = cloudSolrClient.getZkStateReader();

        ClusterState clusterState = zkStateReader.getClusterState();

        String[] collections;
        if (clusterState.hasCollection(chronixCollection)) {
            collections = new String[] { chronixCollection };
        } else {
            // might be a collection alias?
            Aliases aliases = zkStateReader.getAliases();
            String aliasedCollections = aliases.getCollectionAlias(chronixCollection);
            if (aliasedCollections == null)
                throw new IllegalArgumentException("Collection " + chronixCollection + " not found!");
            collections = aliasedCollections.split(",");
        }

        Set<String> liveNodes = clusterState.getLiveNodes();
        Random random = new Random(5150);

        for (String coll : collections) {
            for (Slice slice : clusterState.getSlices(coll)) {
                List<String> replicas = new ArrayList<>();
                for (Replica r : slice.getReplicas()) {
                    if (r.getState().equals(Replica.State.ACTIVE)) {
                        ZkCoreNodeProps replicaCoreProps = new ZkCoreNodeProps(r);
                        if (liveNodes.contains(replicaCoreProps.getNodeName()))
                            replicas.add(replicaCoreProps.getCoreUrl());
                    }
                }
                int numReplicas = replicas.size();
                if (numReplicas == 0)
                    throw new IllegalStateException("Shard " + slice.getName() + " in collection " + coll
                            + " does not have any active replicas!");

                String replicaUrl = (numReplicas == 1) ? replicas.get(0)
                        : replicas.get(random.nextInt(replicas.size()));
                shards.add(replicaUrl);
            }
        }
    } finally {
        cloudSolrClient.close();
    }

    return shards;
}

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From source file:org.opencommercesearch.CloudSearchServer.java

License:Apache License

/**
 * Reloads the core//from  ww  w. j a va2  s.c o  m
 *
 * @param collectionName
 *            the cored to be reloaded
 *
 * @throws SearchServerException
 *          if an error occurs while reloading the core
 *
 */
public void reloadCollection(String collectionName, Locale locale) throws SearchServerException {
    CoreAdminRequest adminRequest = new CoreAdminRequest();
    adminRequest.setCoreName(collectionName);
    adminRequest.setAction(CoreAdminAction.RELOAD);

    CloudSolrServer server = getSolrServer(collectionName, locale);
    ZkStateReader zkStateReader = server.getZkStateReader();
    if (zkStateReader == null) {
        //if the zkStateReader is null it means we haven't connect to this collection
        server.connect();
        zkStateReader = server.getZkStateReader();
    }

    ClusterState clusterState = zkStateReader.getClusterState();
    Set<String> liveNodes = clusterState.getLiveNodes();

    if (liveNodes == null || liveNodes.size() == 0) {
        if (isLoggingInfo()) {
            logInfo("No live nodes found, 0 cores were reloaded");
        }
        return;
    }

    Map<String, Slice> slices = clusterState.getSlicesMap(collectionName);
    if (slices.size() == 0) {
        if (isLoggingInfo()) {
            logInfo("No slices found, 0 cores were reloaded");
        }
    }

    for (Slice slice : slices.values()) {
        for (ZkNodeProps nodeProps : slice.getReplicas()) {
            ZkCoreNodeProps coreNodeProps = new ZkCoreNodeProps(nodeProps);
            String node = coreNodeProps.getNodeName();
            if (!liveNodes.contains(coreNodeProps.getNodeName())
                    || !coreNodeProps.getState().equals(ZkStateReader.ACTIVE)) {
                if (isLoggingInfo()) {
                    logInfo("Node " + node + " is not live, unable to reload core " + collectionName);
                }
                continue;
            }

            if (isLoggingInfo()) {
                logInfo("Reloading core " + collectionName + " on " + node);
            }
            HttpClient httpClient = server.getLbServer().getHttpClient();
            HttpSolrServer nodeServer = new HttpSolrServer(coreNodeProps.getBaseUrl(), httpClient,
                    getResponseParser());
            try {
                CoreAdminResponse adminResponse = adminRequest.process(nodeServer);
                if (isLoggingInfo()) {
                    logInfo("Reladed core " + collectionName + ", current status is "
                            + adminResponse.getCoreStatus());
                }
            } catch (SolrServerException ex) {
                if (ex.getCause() instanceof SocketTimeoutException) {
                    //if we experience a socket timeout out don't kill the entire process. Try to reload the other nodes
                    if (isLoggingError()) {
                        logError("Reloading core failed due to socket timeout for node [" + node
                                + "] and collection [" + collectionName + "]");
                    }
                } else {
                    throw create(CORE_RELOAD_EXCEPTION, ex);
                }
            } catch (IOException ex) {
                throw create(CORE_RELOAD_EXCEPTION, ex);
            }
        }
    }
}

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