| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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.apache.cassandra.io.sstable; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.*; |
| |
| import org.apache.cassandra.db.*; |
| import org.apache.cassandra.db.columniterator.OnDiskAtomIterator; |
| import org.apache.cassandra.io.sstable.format.SSTableReader; |
| import org.apache.cassandra.io.sstable.format.SSTableWriter; |
| import org.apache.cassandra.service.ActiveRepairService; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| |
| import org.apache.cassandra.Util; |
| import static org.junit.Assert.assertEquals; |
| |
| public class SSTableUtils |
| { |
| // first configured keyspace and cf |
| public static String KEYSPACENAME = "Keyspace1"; |
| public static String CFNAME = "Standard1"; |
| |
| public SSTableUtils(String ksname, String cfname) |
| { |
| KEYSPACENAME = ksname; |
| CFNAME = cfname; |
| } |
| |
| /**/ |
| public static ColumnFamily createCF(long mfda, int ldt, Cell... cols) |
| { |
| return createCF(KEYSPACENAME, CFNAME, mfda, ldt, cols); |
| } |
| |
| public static ColumnFamily createCF(String ksname, String cfname, long mfda, int ldt, Cell... cols) |
| { |
| ColumnFamily cf = ArrayBackedSortedColumns.factory.create(ksname, cfname); |
| cf.delete(new DeletionInfo(mfda, ldt)); |
| for (Cell col : cols) |
| cf.addColumn(col); |
| return cf; |
| } |
| |
| public static File tempSSTableFile(String keyspaceName, String cfname) throws IOException |
| { |
| return tempSSTableFile(keyspaceName, cfname, 0); |
| } |
| |
| public static File tempSSTableFile(String keyspaceName, String cfname, int generation) throws IOException |
| { |
| File tempdir = File.createTempFile(keyspaceName, cfname); |
| if(!tempdir.delete() || !tempdir.mkdir()) |
| throw new IOException("Temporary directory creation failed."); |
| tempdir.deleteOnExit(); |
| File cfDir = new File(tempdir, keyspaceName + File.separator + cfname); |
| cfDir.mkdirs(); |
| cfDir.deleteOnExit(); |
| File datafile = new File(new Descriptor(cfDir, keyspaceName, cfname, generation, Descriptor.Type.FINAL).filenameFor("Data.db")); |
| if (!datafile.createNewFile()) |
| throw new IOException("unable to create file " + datafile); |
| datafile.deleteOnExit(); |
| return datafile; |
| } |
| |
| public static void assertContentEquals(SSTableReader lhs, SSTableReader rhs) throws Exception |
| { |
| try (ISSTableScanner slhs = lhs.getScanner(); |
| ISSTableScanner srhs = rhs.getScanner()) |
| { |
| while (slhs.hasNext()) |
| { |
| OnDiskAtomIterator ilhs = slhs.next(); |
| assert srhs.hasNext() : "LHS contained more rows than RHS"; |
| OnDiskAtomIterator irhs = srhs.next(); |
| assertContentEquals(ilhs, irhs); |
| } |
| assert !srhs.hasNext() : "RHS contained more rows than LHS"; |
| } |
| } |
| |
| public static void assertContentEquals(OnDiskAtomIterator lhs, OnDiskAtomIterator rhs) |
| { |
| assertEquals(lhs.getKey(), rhs.getKey()); |
| // check metadata |
| ColumnFamily lcf = lhs.getColumnFamily(); |
| ColumnFamily rcf = rhs.getColumnFamily(); |
| if (lcf == null) |
| { |
| if (rcf == null) |
| return; |
| throw new AssertionError("LHS had no content for " + rhs.getKey()); |
| } |
| else if (rcf == null) |
| throw new AssertionError("RHS had no content for " + lhs.getKey()); |
| assertEquals(lcf.deletionInfo(), rcf.deletionInfo()); |
| // iterate columns |
| while (lhs.hasNext()) |
| { |
| Cell clhs = (Cell)lhs.next(); |
| assert rhs.hasNext() : "LHS contained more columns than RHS for " + lhs.getKey(); |
| Cell crhs = (Cell)rhs.next(); |
| |
| assertEquals("Mismatched columns for " + lhs.getKey(), clhs, crhs); |
| } |
| assert !rhs.hasNext() : "RHS contained more columns than LHS for " + lhs.getKey(); |
| } |
| |
| /** |
| * @return A Context with chainable methods to configure and write a SSTable. |
| */ |
| public static Context prepare() |
| { |
| return new Context(); |
| } |
| |
| public static class Context |
| { |
| private String ksname = KEYSPACENAME; |
| private String cfname = CFNAME; |
| private Descriptor dest = null; |
| private boolean cleanup = true; |
| private int generation = 0; |
| |
| Context() {} |
| |
| public Context ks(String ksname) |
| { |
| this.ksname = ksname; |
| return this; |
| } |
| |
| public Context cf(String cfname) |
| { |
| this.cfname = cfname; |
| return this; |
| } |
| |
| /** |
| * Set an alternate path for the written SSTable: if unset, the SSTable will |
| * be cleaned up on JVM exit. |
| */ |
| public Context dest(Descriptor dest) |
| { |
| this.dest = dest; |
| this.cleanup = false; |
| return this; |
| } |
| |
| /** |
| * Sets the generation number for the generated SSTable. Ignored if "dest()" is set. |
| */ |
| public Context generation(int generation) |
| { |
| this.generation = generation; |
| return this; |
| } |
| |
| public SSTableReader write(Set<String> keys) throws IOException |
| { |
| Map<String, ColumnFamily> map = new HashMap<String, ColumnFamily>(); |
| for (String key : keys) |
| { |
| ColumnFamily cf = ArrayBackedSortedColumns.factory.create(ksname, cfname); |
| cf.addColumn(new BufferCell(Util.cellname(key), ByteBufferUtil.bytes(key), 0)); |
| map.put(key, cf); |
| } |
| return write(map); |
| } |
| |
| public SSTableReader write(SortedMap<DecoratedKey, ColumnFamily> sorted) throws IOException |
| { |
| final Iterator<Map.Entry<DecoratedKey, ColumnFamily>> iter = sorted.entrySet().iterator(); |
| return write(sorted.size(), new Appender() |
| { |
| @Override |
| public boolean append(SSTableWriter writer) throws IOException |
| { |
| if (!iter.hasNext()) |
| return false; |
| Map.Entry<DecoratedKey, ColumnFamily> entry = iter.next(); |
| writer.append(entry.getKey(), entry.getValue()); |
| return true; |
| } |
| }); |
| } |
| |
| public SSTableReader write(Map<String, ColumnFamily> entries) throws IOException |
| { |
| SortedMap<DecoratedKey, ColumnFamily> sorted = new TreeMap<DecoratedKey, ColumnFamily>(); |
| for (Map.Entry<String, ColumnFamily> entry : entries.entrySet()) |
| sorted.put(Util.dk(entry.getKey()), entry.getValue()); |
| |
| return write(sorted); |
| } |
| |
| public SSTableReader write(int expectedSize, Appender appender) throws IOException |
| { |
| File datafile = (dest == null) ? tempSSTableFile(ksname, cfname, generation) : new File(dest.filenameFor(Component.DATA)); |
| SSTableWriter writer = SSTableWriter.create(Descriptor.fromFilename(datafile.getAbsolutePath()), expectedSize, ActiveRepairService.UNREPAIRED_SSTABLE, 0); |
| while (appender.append(writer)) { /* pass */ } |
| SSTableReader reader = writer.finish(true); |
| // mark all components for removal |
| if (cleanup) |
| for (Component component : reader.components) |
| new File(reader.descriptor.filenameFor(component)).deleteOnExit(); |
| return reader; |
| } |
| } |
| |
| public static abstract class Appender |
| { |
| /** Called with an open writer until it returns false. */ |
| public abstract boolean append(SSTableWriter writer) throws IOException; |
| } |
| } |