/**
* Indices deleted.
*
* @return the list
*/
public List<String> indicesDeleted() {
if (previousState == null) {
return ImmutableList.of();
}
if (!metaDataChanged()) {
return ImmutableList.of();
}
List<String> deleted = null;
for (String index : previousState.metaData().indices().keySet()) {
if (!state.metaData().hasIndex(index)) {
if (deleted == null) {
deleted = Lists.newArrayList();
}
deleted.add(index);
}
}
return deleted == null ? ImmutableList.<String> of() : deleted;
}
/**
* Indices created.
*
* @return the list
*/
public List<String> indicesCreated() {
if (previousState == null) {
return Lists.newArrayList(state.metaData().indices().keySet());
}
if (!metaDataChanged()) {
return ImmutableList.of();
}
List<String> created = null;
for (String index : state.metaData().indices().keySet()) {
if (!previousState.metaData().hasIndex(index)) {
if (created == null) {
created = Lists.newArrayList();
}
created.add(index);
}
}
return created == null ? ImmutableList.<String> of() : created;
}
protected List<String> buildShardList(CloudSolrClient cloudSolrServer) {
ZkStateReader zkStateReader = cloudSolrServer.getZkStateReader();
ClusterState clusterState = zkStateReader.getClusterState();
String[] collections = null;
if (clusterState.hasCollection(collection)) {
collections = new String[] {collection};
} else {
// might be a collection alias?
Aliases aliases = zkStateReader.getAliases();
String aliasedCollections = aliases.getCollectionAlias(collection);
if (aliasedCollections == null)
throw new IllegalArgumentException("Collection " + collection + " not found!");
collections = aliasedCollections.split(",");
}
Set<String> liveNodes = clusterState.getLiveNodes();
Random random = new Random(5150);
List<String> shards = new ArrayList<String>();
for (String coll : collections) {
for (Slice slice : clusterState.getSlices(coll)) {
List<String> replicas = new ArrayList<String>();
for (Replica r : slice.getReplicas()) {
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() + " does not have any active replicas!");
String replicaUrl =
(numReplicas == 1) ? replicas.get(0) : replicas.get(random.nextInt(replicas.size()));
shards.add(replicaUrl);
}
}
return shards;
}
/**
* Index meta data changed.
*
* @param current the current
* @return true, if successful
*/
public boolean indexMetaDataChanged(IndexMetaData current) {
MetaData previousMetaData = previousState.metaData();
if (previousMetaData == null) {
return true;
}
IndexMetaData previousIndexMetaData = previousMetaData.index(current.index());
if (previousIndexMetaData == current) {
return false;
}
return true;
}
/**
* Index routing table changed.
*
* @param index the index
* @return true, if successful
*/
public boolean indexRoutingTableChanged(String index) {
if (!state.routingTable().hasIndex(index) && !previousState.routingTable().hasIndex(index)) {
return false;
}
if (state.routingTable().hasIndex(index) && previousState.routingTable().hasIndex(index)) {
return state.routingTable().index(index) != previousState.routingTable().index(index);
}
return true;
}
/**
* Routing table changed.
*
* @return true, if successful
*/
public boolean routingTableChanged() {
return state.routingTable() != previousState.routingTable();
}
/**
* Instantiates a new cluster changed event.
*
* @param source the source
* @param state the state
* @param previousState the previous state
*/
public ClusterChangedEvent(String source, ClusterState state, ClusterState previousState) {
this.source = source;
this.state = state;
this.previousState = previousState;
this.nodesDelta = state.nodes().delta(previousState.nodes());
}
/**
* Local node master.
*
* @return true, if successful
*/
public boolean localNodeMaster() {
return state.nodes().localNodeMaster();
}
/**
* Blocks changed.
*
* @return true, if successful
*/
public boolean blocksChanged() {
return state.blocks() != previousState.blocks();
}
/**
* Meta data changed.
*
* @return true, if successful
*/
public boolean metaDataChanged() {
return state.metaData() != previousState.metaData();
}
