private void getShardLeaders() {
Set<Entry<String, Map<String, Slice>>> collections = collectionStates.entrySet();
for (Entry<String, Map<String, Slice>> collection : collections) {
Map<String, Slice> state = collection.getValue();
Set<Entry<String, Slice>> slices = state.entrySet();
for (Entry<String, Slice> sliceEntry : slices) {
Slice slice = sliceEntry.getValue();
Map<String, ZkNodeProps> shards = slice.getShards();
Set<Entry<String, ZkNodeProps>> shardsEntries = shards.entrySet();
for (Entry<String, ZkNodeProps> shardEntry : shardsEntries) {
ZkNodeProps props = shardEntry.getValue();
if (props.containsKey(ZkStateReader.LEADER_PROP)) {
Map<String, ZkNodeProps> leadersForCollection = leaders.get(collection.getKey());
if (leadersForCollection == null) {
leadersForCollection = new HashMap<String, ZkNodeProps>();
leaders.put(collection.getKey(), leadersForCollection);
}
leadersForCollection.put(sliceEntry.getKey(), props);
}
}
}
}
}
@Test
public void testReadShards() throws Exception {
String zkDir = dataDir.getAbsolutePath() + File.separator + "zookeeper/server1/data";
ZkTestServer server = null;
SolrZkClient zkClient = null;
ZkController zkController = null;
try {
server = new ZkTestServer(zkDir);
server.run();
AbstractZkTestCase.makeSolrZkNode(server.getZkHost());
zkClient = new SolrZkClient(server.getZkAddress(), TIMEOUT);
String shardsPath = "/collections/collection1/shards/shardid1";
zkClient.makePath(shardsPath);
addShardToZk(zkClient, shardsPath, SHARD1, URL1);
addShardToZk(zkClient, shardsPath, SHARD2, URL2);
addShardToZk(zkClient, shardsPath, SHARD3, URL3);
if (DEBUG) {
zkClient.printLayoutToStdOut();
}
zkController =
new ZkController(server.getZkAddress(), TIMEOUT, 1000, "localhost", "8983", "solr");
zkController.getZkStateReader().updateCloudState(true);
CloudState cloudInfo = zkController.getCloudState();
Map<String, Slice> slices = cloudInfo.getSlices("collection1");
assertNotNull(slices);
for (Slice slice : slices.values()) {
Map<String, ZkNodeProps> shards = slice.getShards();
if (DEBUG) {
for (String shardName : shards.keySet()) {
ZkNodeProps props = shards.get(shardName);
System.out.println("shard:" + shardName);
System.out.println("props:" + props.toString());
}
}
assertNotNull(shards.get(SHARD1));
assertNotNull(shards.get(SHARD2));
assertNotNull(shards.get(SHARD3));
ZkNodeProps props = shards.get(SHARD1);
assertEquals(URL1, props.get(ZkStateReader.URL_PROP));
assertEquals(TEST_NODE_NAME, props.get(ZkStateReader.NODE_NAME));
props = shards.get(SHARD2);
assertEquals(URL2, props.get(ZkStateReader.URL_PROP));
assertEquals(TEST_NODE_NAME, props.get(ZkStateReader.NODE_NAME));
props = shards.get(SHARD3);
assertEquals(URL3, props.get(ZkStateReader.URL_PROP));
assertEquals(TEST_NODE_NAME, props.get(ZkStateReader.NODE_NAME));
}
} finally {
if (zkClient != null) {
zkClient.close();
}
if (zkController != null) {
zkController.close();
}
if (server != null) {
server.shutdown();
}
}
}