content: /*
   * 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.bookkeeper.bookie;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.Unpooled;
  import java.io.File;
  import java.io.IOException;
  import java.util.concurrent.CompletableFuture;
  import org.apache.bookkeeper.bookie.BookieException.Code;
  import org.apache.bookkeeper.bookie.LedgerDirsManager.NoWritableLedgerDirException;
  import org.apache.bookkeeper.conf.ServerConfiguration;
  import org.apache.bookkeeper.conf.TestBKConfiguration;
  import org.junit.After;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  /**
   * Test a single bookie at readonly mode.
   */
  public class SingleBookieInitializationTest {
  
      @Rule
      public final TemporaryFolder testDir = new TemporaryFolder();
  
      private File journalDir;
      private File ledgerDir;
      private ServerConfiguration conf;
      private Bookie bookie;
  
      @Before
      public void setUp() throws Exception {
          this.journalDir = testDir.newFolder("journal");
          this.ledgerDir = testDir.newFolder("ledgers");
  
          this.conf = TestBKConfiguration.newServerConfiguration();
          this.conf.setJournalDirsName(new String[] { journalDir.getAbsolutePath() });
          this.conf.setLedgerDirNames(new String[] { ledgerDir.getAbsolutePath() });
          this.conf.setMetadataServiceUri(null);
      }
  
      @After
      public void tearDown() throws Exception {
          if (null != this.bookie) {
              this.bookie.shutdown();
          }
      }
  
      private static String generateDataString(long ledger, long entry) {
          return ("ledger-" + ledger + "-" + entry);
      }
  
      private static ByteBuf generateEntry(long ledger, long entry) {
          byte[] data = generateDataString(ledger, entry).getBytes();
          ByteBuf bb = Unpooled.buffer(8 + 8 + data.length);
          bb.writeLong(ledger);
          bb.writeLong(entry);
          bb.writeBytes(data);
          return bb;
      }
  
      @Test
      public void testInitBookieNoWritableDirsButHasEnoughSpaces() throws Exception {
          float usage = 1.0f - ((float) ledgerDir.getUsableSpace()) / ledgerDir.getTotalSpace();
          conf.setDiskUsageThreshold(usage / 2);
          conf.setDiskUsageWarnThreshold(usage / 3);
          conf.setMinUsableSizeForEntryLogCreation(Long.MIN_VALUE);
          conf.setLedgerStorageClass(InterleavedLedgerStorage.class.getName());
  
          bookie = new TestBookieImpl(conf);
          bookie.start();
  
          CompletableFuture<Integer> writeFuture = new CompletableFuture<>();
          bookie.addEntry(
              generateEntry(1L, 2L),
              false,
              (rc, ledgerId, entryId, addr, ctx) -> writeFuture.complete(rc),
              null,
              new byte[0]
          );
          assertEquals(Code.OK, writeFuture.get().intValue());
      }
  
      @Test
      public void testInitBookieNoWritableDirsAndNoEnoughSpaces() throws Exception {
          float usage = 1.0f - ((float) ledgerDir.getUsableSpace()) / ledgerDir.getTotalSpace();
          conf.setDiskUsageThreshold(usage / 2);
          conf.setDiskUsageWarnThreshold(usage / 3);
          conf.setMinUsableSizeForEntryLogCreation(Long.MAX_VALUE);
          conf.setLedgerStorageClass(InterleavedLedgerStorage.class.getName());
  
          bookie = new TestBookieImpl(conf);
          bookie.start();
  
          try {
              bookie.addEntry(
                  generateEntry(1L, 2L),
                  false,
                  (rc, ledgerId, entryId, addr, ctx) -> {},
                  null,
                  new byte[0]
              );
              fail("Should fail on creating new entry log file"
                  + " since there is no enough disk space to accommodate writes");
          } catch (IOException ioe) {
              // expected
              assertTrue(ioe.getCause() instanceof NoWritableLedgerDirException);
          }
      }
  
  }
  