Example usage for org.apache.solr.common.cloud ZkStateReader ALIASES

Introduction

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

Prototype

String ALIASES

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Usage

From source file:com.cloudera.cdk.morphline.solr.ZooKeeperDownloader.java

License:Apache License

/**
 * Returns config value given collection name
 * Borrowed heavily from Solr's ZKController.
 *///from w  w  w.  j a va  2 s  .  c  o m
public String readConfigName(SolrZkClient zkClient, String collection)
        throws KeeperException, InterruptedException {
    if (collection == null) {
        throw new IllegalArgumentException("collection must not be null");
    }
    String configName = null;

    // first check for alias
    byte[] aliasData = zkClient.getData(ZkStateReader.ALIASES, null, null, true);
    Aliases aliases = ClusterState.load(aliasData);
    String alias = aliases.getCollectionAlias(collection);
    if (alias != null) {
        List<String> aliasList = StrUtils.splitSmart(alias, ",", true);
        if (aliasList.size() > 1) {
            throw new IllegalArgumentException(
                    "collection cannot be an alias that maps to multiple collections");
        }
        collection = aliasList.get(0);
    }

    String path = ZkStateReader.COLLECTIONS_ZKNODE + "/" + collection;
    if (LOG.isInfoEnabled()) {
        LOG.info("Load collection config from:" + path);
    }
    byte[] data = zkClient.getData(path, null, null, true);

    if (data != null) {
        ZkNodeProps props = ZkNodeProps.load(data);
        configName = props.getStr(ZkController.CONFIGNAME_PROP);
    }

    if (configName != null && !zkClient.exists(ZkController.CONFIGS_ZKNODE + "/" + configName, true)) {
        LOG.error("Specified config does not exist in ZooKeeper:" + configName);
        throw new IllegalArgumentException("Specified config does not exist in ZooKeeper:" + configName);
    }

    return configName;
}

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From source file:uk.bl.wa.apache.solr.hadoop.ZooKeeperInspector.java

License:Apache License

private String checkForAlias(SolrZkClient zkClient, String collection)
        throws KeeperException, InterruptedException {
    byte[] aliasData = zkClient.getData(ZkStateReader.ALIASES, null, null, true);
    Aliases aliases = ClusterState.load(aliasData);
    String alias = aliases.getCollectionAlias(collection);
    if (alias != null) {
        List<String> aliasList = StrUtils.splitSmart(alias, ",", true);
        if (aliasList.size() > 1) {
            throw new IllegalArgumentException(
                    "collection cannot be an alias that maps to multiple collections");
        }/* w  w w .  j a  v a  2  s .c o  m*/
        collection = aliasList.get(0);
    }
    return collection;
}

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