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* the Apache License, Version 2.0 (the "License"); you may
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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,
* software distributed under the License is distributed on an
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package org.elasticsearch.index.deletionpolicy;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.TextField;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.store.RAMDirectory;
import org.elasticsearch.common.lucene.Lucene;
import org.elasticsearch.index.Index;
import org.elasticsearch.index.shard.ShardId;
import org.elasticsearch.test.ESTestCase;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.apache.lucene.index.DirectoryReader.listCommits;
import static org.elasticsearch.common.settings.Settings.Builder.EMPTY_SETTINGS;
import static org.hamcrest.Matchers.equalTo;
/**
* A set of tests for {@link org.elasticsearch.index.deletionpolicy.SnapshotDeletionPolicy}.
*/
public class SnapshotDeletionPolicyTests extends ESTestCase {
protected final ShardId shardId = new ShardId(new Index("index"), 1);
private RAMDirectory dir;
private SnapshotDeletionPolicy deletionPolicy;
private IndexWriter indexWriter;
@Override
@Before
public void setUp() throws Exception {
super.setUp();
dir = new RAMDirectory();
deletionPolicy = new SnapshotDeletionPolicy(new KeepOnlyLastDeletionPolicy(shardId, EMPTY_SETTINGS));
indexWriter = new IndexWriter(dir, new IndexWriterConfig(Lucene.STANDARD_ANALYZER)
.setIndexDeletionPolicy(deletionPolicy)
.setOpenMode(IndexWriterConfig.OpenMode.CREATE));
}
@Override
@After
public void tearDown() throws Exception {
super.tearDown();
indexWriter.close();
dir.close();
}
private Document testDocument() {
Document document = new Document();
document.add(new TextField("test", "1", Field.Store.YES));
return document;
}
@Test
public void testSimpleSnapshot() throws Exception {
// add a document and commit, resulting in one commit point
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
// add another document and commit, resulting again in one commit point
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
// snapshot the last commit, and then add a document and commit, now we should have two commit points
SnapshotIndexCommit snapshot = deletionPolicy.snapshot();
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(2));
// release the commit, add a document and commit, now we should be back to one commit point
snapshot.close();
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
}
@Test
public void testMultiSnapshot() throws Exception {
// add a document and commit, resulting in one commit point
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
// take two snapshots
SnapshotIndexCommit snapshot1 = deletionPolicy.snapshot();
SnapshotIndexCommit snapshot2 = deletionPolicy.snapshot();
// we should have two commits points
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(2));
// release one snapshot, we should still have two commit points
snapshot1.close();
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(2));
// release the second snapshot, we should be back to one commit
snapshot2.close();
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
}
@Test
public void testMultiReleaseException() throws Exception {
// add a document and commit, resulting in one commit point
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
// snapshot the last commit, and release it twice, the seconds should throw an exception
SnapshotIndexCommit snapshot = deletionPolicy.snapshot();
snapshot.close();
snapshot.close();
}
@Test
public void testSimpleSnapshots() throws Exception {
// add a document and commit, resulting in one commit point
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
// add another document and commit, resulting again in one commint point
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
// snapshot the last commit, and then add a document and commit, now we should have two commit points
SnapshotIndexCommit snapshot = deletionPolicy.snapshot();
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(2));
// now, take a snapshot of all the commits
SnapshotIndexCommits snapshots = deletionPolicy.snapshots();
assertThat(snapshots.size(), equalTo(2));
// release the snapshot, add a document and commit
// we should have 3 commits points since we are holding onto the first two with snapshots
// and we are using the keep only last
snapshot.close();
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(3));
// now release the snapshots, we should be back to a single commit point
snapshots.close();
indexWriter.addDocument(testDocument());
indexWriter.commit();
assertThat(listCommits(dir).size(), equalTo(1));
}
}