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* http://www.apache.org/licenses/LICENSE-2.0
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package org.elasticsearch.cluster.serialization;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.ClusterModule;
import org.elasticsearch.cluster.ClusterName;
import org.elasticsearch.cluster.ClusterState;
import org.elasticsearch.cluster.Diff;
import org.elasticsearch.cluster.ESAllocationTestCase;
import org.elasticsearch.cluster.RestoreInProgress;
import org.elasticsearch.cluster.SnapshotDeletionsInProgress;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.node.DiscoveryNodes;
import org.elasticsearch.cluster.routing.RoutingTable;
import org.elasticsearch.cluster.routing.allocation.AllocationService;
import org.elasticsearch.common.UUIDs;
import org.elasticsearch.common.collect.ImmutableOpenMap;
import org.elasticsearch.common.io.stream.BytesStreamOutput;
import org.elasticsearch.common.io.stream.NamedWriteableAwareStreamInput;
import org.elasticsearch.common.io.stream.NamedWriteableRegistry;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.snapshots.Snapshot;
import org.elasticsearch.snapshots.SnapshotId;
import java.util.Collections;
import static org.elasticsearch.test.VersionUtils.randomVersionBetween;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.notNullValue;
import static org.hamcrest.Matchers.nullValue;
public class ClusterSerializationTests extends ESAllocationTestCase {
public void testClusterStateSerialization() throws Exception {
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(10).numberOfReplicas(1))
.build();
RoutingTable routingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.build();
DiscoveryNodes nodes = DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")).add(newNode("node3")).localNodeId("node1").masterNodeId("node2").build();
ClusterState clusterState = ClusterState.builder(new ClusterName("clusterName1")).nodes(nodes).metaData(metaData).routingTable(routingTable).build();
AllocationService strategy = createAllocationService();
clusterState = ClusterState.builder(clusterState).routingTable(strategy.reroute(clusterState, "reroute").routingTable()).build();
ClusterState serializedClusterState = ClusterState.Builder.fromBytes(ClusterState.Builder.toBytes(clusterState), newNode("node1"),
new NamedWriteableRegistry(ClusterModule.getNamedWriteables()));
assertThat(serializedClusterState.getClusterName().value(), equalTo(clusterState.getClusterName().value()));
assertThat(serializedClusterState.routingTable().toString(), equalTo(clusterState.routingTable().toString()));
}
public void testRoutingTableSerialization() throws Exception {
MetaData metaData = MetaData.builder()
.put(IndexMetaData.builder("test").settings(settings(Version.CURRENT)).numberOfShards(10).numberOfReplicas(1))
.build();
RoutingTable routingTable = RoutingTable.builder()
.addAsNew(metaData.index("test"))
.build();
DiscoveryNodes nodes = DiscoveryNodes.builder().add(newNode("node1")).add(newNode("node2")).add(newNode("node3")).build();
ClusterState clusterState = ClusterState.builder(ClusterName.CLUSTER_NAME_SETTING.getDefault(Settings.EMPTY)).nodes(nodes)
.metaData(metaData).routingTable(routingTable).build();
AllocationService strategy = createAllocationService();
RoutingTable source = strategy.reroute(clusterState, "reroute").routingTable();
BytesStreamOutput outStream = new BytesStreamOutput();
source.writeTo(outStream);
StreamInput inStream = outStream.bytes().streamInput();
RoutingTable target = RoutingTable.readFrom(inStream);
assertThat(target.toString(), equalTo(source.toString()));
}
public void testSnapshotDeletionsInProgressSerialization() throws Exception {
boolean includeRestore = randomBoolean();
ClusterState.Builder builder = ClusterState.builder(ClusterState.EMPTY_STATE)
.putCustom(SnapshotDeletionsInProgress.TYPE,
SnapshotDeletionsInProgress.newInstance(
new SnapshotDeletionsInProgress.Entry(
new Snapshot("repo1", new SnapshotId("snap1", UUIDs.randomBase64UUID())),
randomNonNegativeLong(), randomNonNegativeLong())
));
if (includeRestore) {
builder.putCustom(RestoreInProgress.TYPE,
new RestoreInProgress(
new RestoreInProgress.Entry(
new Snapshot("repo2", new SnapshotId("snap2", UUIDs.randomBase64UUID())),
RestoreInProgress.State.STARTED,
Collections.singletonList("index_name"),
ImmutableOpenMap.of()
)
));
}
ClusterState clusterState = builder.incrementVersion().build();
Diff<ClusterState> diffs = clusterState.diff(ClusterState.EMPTY_STATE);
// serialize with current version
BytesStreamOutput outStream = new BytesStreamOutput();
diffs.writeTo(outStream);
StreamInput inStream = outStream.bytes().streamInput();
inStream = new NamedWriteableAwareStreamInput(inStream, new NamedWriteableRegistry(ClusterModule.getNamedWriteables()));
Diff<ClusterState> serializedDiffs = ClusterState.readDiffFrom(inStream, clusterState.nodes().getLocalNode());
ClusterState stateAfterDiffs = serializedDiffs.apply(ClusterState.EMPTY_STATE);
assertThat(stateAfterDiffs.custom(RestoreInProgress.TYPE), includeRestore ? notNullValue() : nullValue());
assertThat(stateAfterDiffs.custom(SnapshotDeletionsInProgress.TYPE), notNullValue());
// serialize with old version
outStream = new BytesStreamOutput();
outStream.setVersion(Version.CURRENT.minimumCompatibilityVersion());
diffs.writeTo(outStream);
inStream = outStream.bytes().streamInput();
inStream = new NamedWriteableAwareStreamInput(inStream, new NamedWriteableRegistry(ClusterModule.getNamedWriteables()));
serializedDiffs = ClusterState.readDiffFrom(inStream, clusterState.nodes().getLocalNode());
stateAfterDiffs = serializedDiffs.apply(ClusterState.EMPTY_STATE);
assertThat(stateAfterDiffs.custom(RestoreInProgress.TYPE), includeRestore ? notNullValue() : nullValue());
assertThat(stateAfterDiffs.custom(SnapshotDeletionsInProgress.TYPE), nullValue());
// remove the custom and try serializing again with old version
clusterState = ClusterState.builder(clusterState).removeCustom(SnapshotDeletionsInProgress.TYPE).incrementVersion().build();
outStream = new BytesStreamOutput();
diffs.writeTo(outStream);
inStream = outStream.bytes().streamInput();
inStream = new NamedWriteableAwareStreamInput(inStream, new NamedWriteableRegistry(ClusterModule.getNamedWriteables()));
serializedDiffs = ClusterState.readDiffFrom(inStream, clusterState.nodes().getLocalNode());
stateAfterDiffs = serializedDiffs.apply(stateAfterDiffs);
assertThat(stateAfterDiffs.custom(RestoreInProgress.TYPE), includeRestore ? notNullValue() : nullValue());
assertThat(stateAfterDiffs.custom(SnapshotDeletionsInProgress.TYPE), nullValue());
}
}