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* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
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package org.elasticsearch.index.shard;
import org.elasticsearch.Version;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.routing.AllocationId;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.env.NodeEnvironment;
import org.elasticsearch.index.Index;
import org.elasticsearch.test.ESTestCase;
import org.elasticsearch.test.IndexSettingsModule;
import java.io.IOException;
import java.nio.file.Path;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.is;
public class ShardPathTests extends ESTestCase {
public void testLoadShardPath() throws IOException {
try (NodeEnvironment env = newNodeEnvironment(Settings.builder().build())) {
Settings.Builder builder = Settings.builder().put(IndexMetaData.SETTING_INDEX_UUID, "0xDEADBEEF")
.put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT);
Settings settings = builder.build();
ShardId shardId = new ShardId("foo", "0xDEADBEEF", 0);
Path[] paths = env.availableShardPaths(shardId);
Path path = randomFrom(paths);
ShardStateMetaData.FORMAT.write(new ShardStateMetaData(true, "0xDEADBEEF", AllocationId.newInitializing()), path);
ShardPath shardPath = ShardPath.loadShardPath(logger, env, shardId, IndexSettingsModule.newIndexSettings(shardId.getIndex(), settings));
assertEquals(path, shardPath.getDataPath());
assertEquals("0xDEADBEEF", shardPath.getShardId().getIndex().getUUID());
assertEquals("foo", shardPath.getShardId().getIndexName());
assertEquals(path.resolve("translog"), shardPath.resolveTranslog());
assertEquals(path.resolve("index"), shardPath.resolveIndex());
}
}
public void testFailLoadShardPathOnMultiState() throws IOException {
try (NodeEnvironment env = newNodeEnvironment(Settings.builder().build())) {
final String indexUUID = "0xDEADBEEF";
Settings.Builder builder = Settings.builder().put(IndexMetaData.SETTING_INDEX_UUID, indexUUID)
.put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT);
Settings settings = builder.build();
ShardId shardId = new ShardId("foo", indexUUID, 0);
Path[] paths = env.availableShardPaths(shardId);
assumeTrue("This test tests multi data.path but we only got one", paths.length > 1);
ShardStateMetaData.FORMAT.write(new ShardStateMetaData(true, indexUUID, AllocationId.newInitializing()), paths);
Exception e = expectThrows(IllegalStateException.class, () ->
ShardPath.loadShardPath(logger, env, shardId, IndexSettingsModule.newIndexSettings(shardId.getIndex(), settings)));
assertThat(e.getMessage(), containsString("more than one shard state found"));
}
}
public void testFailLoadShardPathIndexUUIDMissmatch() throws IOException {
try (NodeEnvironment env = newNodeEnvironment(Settings.builder().build())) {
Settings.Builder builder = Settings.builder().put(IndexMetaData.SETTING_INDEX_UUID, "foobar")
.put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT);
Settings settings = builder.build();
ShardId shardId = new ShardId("foo", "foobar", 0);
Path[] paths = env.availableShardPaths(shardId);
Path path = randomFrom(paths);
ShardStateMetaData.FORMAT.write(new ShardStateMetaData(true, "0xDEADBEEF", AllocationId.newInitializing()), path);
Exception e = expectThrows(IllegalStateException.class, () ->
ShardPath.loadShardPath(logger, env, shardId, IndexSettingsModule.newIndexSettings(shardId.getIndex(), settings)));
assertThat(e.getMessage(), containsString("expected: foobar on shard path"));
}
}
public void testIllegalCustomDataPath() {
Index index = new Index("foo", "foo");
final Path path = createTempDir().resolve(index.getUUID()).resolve("0");
Exception e = expectThrows(IllegalArgumentException.class, () -> new ShardPath(true, path, path, new ShardId(index, 0)));
assertThat(e.getMessage(), is("shard state path must be different to the data path when using custom data paths"));
}
public void testValidCtor() {
Index index = new Index("foo", "foo");
final Path path = createTempDir().resolve(index.getUUID()).resolve("0");
ShardPath shardPath = new ShardPath(false, path, path, new ShardId(index, 0));
assertFalse(shardPath.isCustomDataPath());
assertEquals(shardPath.getDataPath(), path);
assertEquals(shardPath.getShardStatePath(), path);
}
public void testGetRootPaths() throws IOException {
boolean useCustomDataPath = randomBoolean();
final Settings indexSettings;
final Settings nodeSettings;
final String indexUUID = "0xDEADBEEF";
Settings.Builder indexSettingsBuilder = Settings.builder()
.put(IndexMetaData.SETTING_INDEX_UUID, indexUUID)
.put(IndexMetaData.SETTING_VERSION_CREATED, Version.CURRENT);
final Path customPath;
if (useCustomDataPath) {
final Path path = createTempDir();
indexSettings = indexSettingsBuilder.put(IndexMetaData.SETTING_DATA_PATH, "custom").build();
nodeSettings = Settings.builder().put(Environment.PATH_SHARED_DATA_SETTING.getKey(), path.toAbsolutePath().toAbsolutePath())
.build();
customPath = path.resolve("custom").resolve("0");
} else {
customPath = null;
indexSettings = indexSettingsBuilder.build();
nodeSettings = Settings.EMPTY;
}
try (NodeEnvironment env = newNodeEnvironment(nodeSettings)) {
ShardId shardId = new ShardId("foo", indexUUID, 0);
Path[] paths = env.availableShardPaths(shardId);
Path path = randomFrom(paths);
ShardStateMetaData.FORMAT.write(new ShardStateMetaData(true, indexUUID, AllocationId.newInitializing()), path);
ShardPath shardPath = ShardPath.loadShardPath(logger, env, shardId,
IndexSettingsModule.newIndexSettings(shardId.getIndex(), indexSettings, nodeSettings));
boolean found = false;
for (Path p : env.nodeDataPaths()) {
if (p.equals(shardPath.getRootStatePath())) {
found = true;
break;
}
}
assertTrue("root state paths must be a node path but wasn't: " + shardPath.getRootStatePath(), found);
found = false;
if (useCustomDataPath) {
assertNotEquals(shardPath.getRootDataPath(), shardPath.getRootStatePath());
assertEquals(customPath, shardPath.getRootDataPath());
} else {
assertNull(customPath);
for (Path p : env.nodeDataPaths()) {
if (p.equals(shardPath.getRootDataPath())) {
found = true;
break;
}
}
assertTrue("root state paths must be a node path but wasn't: " + shardPath.getRootDataPath(), found);
}
}
}
}