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/*
* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch licenses this file to you under
* the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License.
* 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,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.elasticsearch.bwcompat;
import org.apache.lucene.util.LuceneTestCase;
import org.apache.lucene.util.TestUtil;
import org.elasticsearch.Version;
import org.elasticsearch.VersionTests;
import org.elasticsearch.cluster.metadata.IndexMetaData;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.common.io.FileSystemUtils;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.gateway.MetaDataStateFormat;
import org.elasticsearch.plugins.Plugin;
import org.elasticsearch.test.ESIntegTestCase;
import org.elasticsearch.test.InternalSettingsPlugin;
import org.elasticsearch.test.OldIndexUtils;
import org.elasticsearch.test.VersionUtils;
import org.junit.AfterClass;
import org.junit.Before;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Locale;
import java.util.SortedSet;
import java.util.TreeSet;
import static org.elasticsearch.test.OldIndexUtils.getIndexDir;
// needs at least 2 nodes since it bumps replicas to 1
@ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST, numDataNodes = 0)
@LuceneTestCase.SuppressFileSystems("ExtrasFS")
public class OldIndexBackwardsCompatibilityIT extends ESIntegTestCase {
// TODO: test for proper exception on unsupported indexes (maybe via separate test?)
// We have a 0.20.6.zip etc for this.
@Override
protected Collection<Class<? extends Plugin>> nodePlugins() {
return Arrays.asList(InternalSettingsPlugin.class);
}
List<String> indexes;
List<String> unsupportedIndexes;
static String singleDataPathNodeName;
static String multiDataPathNodeName;
static Path singleDataPath;
static Path[] multiDataPath;
@Before
public void initIndexesList() throws Exception {
indexes = OldIndexUtils.loadDataFilesList("index", getBwcIndicesPath());
unsupportedIndexes = OldIndexUtils.loadDataFilesList("unsupported", getBwcIndicesPath());
}
@AfterClass
public static void tearDownStatics() {
singleDataPathNodeName = null;
multiDataPathNodeName = null;
singleDataPath = null;
multiDataPath = null;
}
@Override
public Settings nodeSettings(int ord) {
return OldIndexUtils.getSettings();
}
public void testAllVersionsTested() throws Exception {
SortedSet<String> expectedVersions = new TreeSet<>();
for (Version v : VersionUtils.allReleasedVersions()) {
// The current version is in the "released" list even though it isn't released for historical reasons
if (v == Version.CURRENT) continue;
if (v.isRelease() == false) continue; // no guarantees for prereleases
if (v.before(Version.CURRENT.minimumIndexCompatibilityVersion())) continue; // we can only support one major version backward
if (v.equals(Version.CURRENT)) continue; // the current version is always compatible with itself
expectedVersions.add("index-" + v.toString() + ".zip");
}
for (String index : indexes) {
if (expectedVersions.remove(index) == false) {
logger.warn("Old indexes tests contain extra index: {}", index);
}
}
if (expectedVersions.isEmpty() == false) {
StringBuilder msg = new StringBuilder("Old index tests are missing indexes:");
for (String expected : expectedVersions) {
msg.append("\n" + expected);
}
fail(msg.toString());
}
}
private static final Version VERSION_5_1_0_UNRELEASED = Version.fromString("5.1.0");
public void testUnreleasedVersion() {
VersionTests.assertUnknownVersion(VERSION_5_1_0_UNRELEASED);
}
private Path getNodeDir(String indexFile) throws IOException {
Path unzipDir = createTempDir();
Path unzipDataDir = unzipDir.resolve("data");
// decompress the index
Path backwardsIndex = getBwcIndicesPath().resolve(indexFile);
try (InputStream stream = Files.newInputStream(backwardsIndex)) {
TestUtil.unzip(stream, unzipDir);
}
// check it is unique
assertTrue(Files.exists(unzipDataDir));
Path[] list = FileSystemUtils.files(unzipDataDir);
if (list.length != 1) {
throw new IllegalStateException("Backwards index must contain exactly one cluster");
}
int zipIndex = indexFile.indexOf(".zip");
final Version version = Version.fromString(indexFile.substring("index-".length(), zipIndex));
if (version.before(Version.V_5_0_0_alpha1)) {
// the bwc scripts packs the indices under this path
return list[0].resolve("nodes/0/");
} else {
// after 5.0.0, data folders do not include the cluster name
return list[0].resolve("0");
}
}
public void testOldClusterStates() throws Exception {
// dangling indices do not load the global state, only the per-index states
// so we make sure we can read them separately
MetaDataStateFormat<MetaData> globalFormat = new MetaDataStateFormat<MetaData>(XContentType.JSON, "global-") {
@Override
public void toXContent(XContentBuilder builder, MetaData state) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public MetaData fromXContent(XContentParser parser) throws IOException {
return MetaData.Builder.fromXContent(parser);
}
};
MetaDataStateFormat<IndexMetaData> indexFormat = new MetaDataStateFormat<IndexMetaData>(XContentType.JSON, "state-") {
@Override
public void toXContent(XContentBuilder builder, IndexMetaData state) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public IndexMetaData fromXContent(XContentParser parser) throws IOException {
return IndexMetaData.Builder.fromXContent(parser);
}
};
Collections.shuffle(indexes, random());
for (String indexFile : indexes) {
String indexName = indexFile.replace(".zip", "").toLowerCase(Locale.ROOT).replace("unsupported-", "index-");
Path nodeDir = getNodeDir(indexFile);
logger.info("Parsing cluster state files from index [{}]", indexName);
final MetaData metaData = globalFormat.loadLatestState(logger, xContentRegistry(), nodeDir);
assertNotNull(metaData);
final Version version = Version.fromString(indexName.substring("index-".length()));
final Path dataDir;
if (version.before(Version.V_5_0_0_alpha1)) {
dataDir = nodeDir.getParent().getParent();
} else {
dataDir = nodeDir.getParent();
}
final Path indexDir = getIndexDir(logger, indexName, indexFile, dataDir);
assertNotNull(indexFormat.loadLatestState(logger, xContentRegistry(), indexDir));
}
}
}
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