Package voldemort.store.readonly

Examples of voldemort.store.readonly.ReadOnlyStorageMetadata

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        } catch(VoldemortException e) {}
        metadataFile.delete();

        // Missing metadata checksum type
        metadataFile = new File(testSourceDirectory, ".metadata");
        ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
        metadata.add(ReadOnlyStorageMetadata.FORMAT, ReadOnlyStorageFormat.READONLY_V2.getCode());
        FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());

        fetchedFile = fetcher.fetch(testSourceDirectory.getAbsolutePath(),
                                    testDestinationDirectory.getAbsolutePath() + "3");
        assertNotNull(fetchedFile);
        assertEquals(fetchedFile.getAbsolutePath(), testDestinationDirectory.getAbsolutePath()
                                                    + "3");
        metadataFile.delete();

        // Incorrect checksum type + missing checksum
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM_TYPE, "blah");
        FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
        fetchedFile = fetcher.fetch(testSourceDirectory.getAbsolutePath(),
                                    testDestinationDirectory.getAbsolutePath() + "4");
        assertNotNull(fetchedFile);
        assertEquals(fetchedFile.getAbsolutePath(), testDestinationDirectory.getAbsolutePath()
                                                    + "4");
        metadataFile.delete();

        // Incorrect metadata checksum
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM_TYPE, CheckSum.toString(CheckSumType.MD5));
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM, "1234");
        FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
        fetchedFile = fetcher.fetch(testSourceDirectory.getAbsolutePath(),
                                    testDestinationDirectory.getAbsolutePath() + "5");
        assertNull(fetchedFile);
        metadataFile.delete();

        // Correct metadata checksum - MD5
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM,
                     new String(Hex.encodeHex(CheckSumTests.calculateCheckSum(testSourceDirectory.listFiles(),
                                                                              CheckSumType.MD5))));
        FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
        fetchedFile = fetcher.fetch(testSourceDirectory.getAbsolutePath(),
                                    testDestinationDirectory.getAbsolutePath() + "6");
        assertNotNull(fetchedFile);
        assertEquals(fetchedFile.getAbsolutePath(), testDestinationDirectory.getAbsolutePath()
                                                    + "6");

        // Correct metadata checksum - ADLER32
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM_TYPE, CheckSum.toString(CheckSumType.ADLER32));
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM,
                     new String(Hex.encodeHex(CheckSumTests.calculateCheckSum(testSourceDirectory.listFiles(),
                                                                              CheckSumType.ADLER32))));
        FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
        fetchedFile = fetcher.fetch(testSourceDirectory.getAbsolutePath(),
                                    testDestinationDirectory.getAbsolutePath() + "7");
        assertNotNull(fetchedFile);
        assertEquals(fetchedFile.getAbsolutePath(), testDestinationDirectory.getAbsolutePath()
                                                    + "7");

        // Correct metadata checksum - CRC32
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM_TYPE, CheckSum.toString(CheckSumType.CRC32));
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM,
                     new String(Hex.encodeHex(CheckSumTests.calculateCheckSum(testSourceDirectory.listFiles(),
                                                                              CheckSumType.CRC32))));
        FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
        fetchedFile = fetcher.fetch(testSourceDirectory.getAbsolutePath(),
                                    testDestinationDirectory.getAbsolutePath() + "8");
        assertNotNull(fetchedFile);
        assertEquals(fetchedFile.getAbsolutePath(), testDestinationDirectory.getAbsolutePath()
                                                    + "8");
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        // Check if metadata file exists
        File metadataFile = new File(nodeFile, ".metadata");
        Assert.assertTrue(metadataFile.exists());

        ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata(metadataFile);
        if(saveKeys)
            Assert.assertEquals(metadata.get(ReadOnlyStorageMetadata.FORMAT),
                                ReadOnlyStorageFormat.READONLY_V2.getCode());
        else
            Assert.assertEquals(metadata.get(ReadOnlyStorageMetadata.FORMAT),
                                ReadOnlyStorageFormat.READONLY_V1.getCode());

        Assert.assertEquals(metadata.get(ReadOnlyStorageMetadata.CHECKSUM_TYPE),
                            CheckSum.toString(CheckSumType.MD5));

        // Check contents of checkSum file
        byte[] md5 = Hex.decodeHex(((String) metadata.get(ReadOnlyStorageMetadata.CHECKSUM)).toCharArray());
        byte[] checkSumBytes = CheckSumTests.calculateCheckSum(nodeFile.listFiles(),
                                                               CheckSumType.MD5);
        Assert.assertEquals(0, ByteUtils.compare(checkSumBytes, md5));

        // check if fetching works
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        HdfsFetcher fetcher = new HdfsFetcher();

        File metadataFile = new File(testSourceDirectory, ".metadata");

        ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
        metadata.add(ReadOnlyStorageMetadata.FORMAT, ReadOnlyStorageFormat.READONLY_V2.getCode());

        metadata.add(ReadOnlyStorageMetadata.CHECKSUM_TYPE, CheckSum.toString(CheckSumType.MD5));
        // Correct metadata checksum - MD5
        metadata.add(ReadOnlyStorageMetadata.CHECKSUM,
                     new String(Hex.encodeHex(CheckSumTests.calculateCheckSum(testSourceDirectory.listFiles(),
                                                                              CheckSumType.MD5))));
        FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());

        File tempDest = new File(testDestinationDirectory.getAbsolutePath() + "1");
        if(tempDest.exists()) {

            deleteDir(tempDest);
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        // 3) Write a json string
        fs.delete(testPath, true);
        fs.create(testPath);

        ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
        metadata.add(ReadOnlyStorageMetadata.FORMAT, ReadOnlyStorageFormat.READONLY_V2.getCode());

        // Write file contents
        new FileOutputStream(testPath.toString()).write(metadata.toJsonString().getBytes());

        ReadOnlyStorageMetadata readMetadata = new ReadOnlyStorageMetadata(HadoopStoreBuilderUtils.readFileContents(fs,
                                                                                                                    testPath,
                                                                                                                    1024));
        Assert.assertEquals(readMetadata.get(ReadOnlyStorageMetadata.FORMAT),
                            ReadOnlyStorageFormat.READONLY_V2.getCode());
    }
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                                 long indexSize,
                                 long dataSize,
                                 HashMap<Integer, List<Integer>> buckets,
                                 File versionDir) throws IOException {

        ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
        metadata.add(ReadOnlyStorageMetadata.FORMAT, ReadOnlyStorageFormat.READONLY_V2.getCode());

        File metadataFile = new File(versionDir, ".metadata");
        BufferedWriter writer = new BufferedWriter(new FileWriter(metadataFile));
        writer.write(metadata.toJsonString());
        writer.close();

        for(Entry<Integer, List<Integer>> entry: buckets.entrySet()) {
            int replicaType = entry.getKey();
            for(int partitionId: entry.getValue()) {
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                        // Read metadata into local file
                        File copyLocation = new File(dest, status.getPath().getName());
                        copyFileWithCheckSum(fs, status.getPath(), copyLocation, stats, null);

                        // Open the local file to initialize checksum
                        ReadOnlyStorageMetadata metadata;
                        try {
                            metadata = new ReadOnlyStorageMetadata(copyLocation);
                        } catch(IOException e) {
                            logger.error("Error reading metadata file ", e);
                            throw new VoldemortException(e);
                        }

                        // Read checksum
                        String checkSumTypeString = (String) metadata.get(ReadOnlyStorageMetadata.CHECKSUM_TYPE);
                        String checkSumString = (String) metadata.get(ReadOnlyStorageMetadata.CHECKSUM);

                        if(checkSumTypeString != null && checkSumString != null) {

                            try {
                                origCheckSum = Hex.decodeHex(checkSumString.toCharArray());
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                // because
                // for new nodes the stores don't start with any metadata file

                File metadataFile = new File(destinationDirPath, ".metadata");
                if(!metadataFile.exists()) {
                    ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
                    metadata.add(ReadOnlyStorageMetadata.FORMAT,
                                 ReadOnlyStorageFormat.READONLY_V2.getCode());
                    FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
                }

                VAdminProto.FetchPartitionFilesRequest fetchPartitionFileRequest = VAdminProto.FetchPartitionFilesRequest.newBuilder()
                                                                                                                         .setStoreName(storeName)
                                                                                                                         .addAllPartitionIds(partitionIds)
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                                 long indexSize,
                                 long dataSize,
                                 HashMap<Integer, List<Integer>> buckets,
                                 File versionDir) throws IOException {

        ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
        metadata.add(ReadOnlyStorageMetadata.FORMAT, ReadOnlyStorageFormat.READONLY_V2.getCode());

        File metadataFile = new File(versionDir, ".metadata");
        BufferedWriter writer = new BufferedWriter(new FileWriter(metadataFile));
        writer.write(metadata.toJsonString());
        writer.close();

        for(Entry<Integer, List<Integer>> entry: buckets.entrySet()) {
            int replicaType = entry.getKey();
            for(int partitionId: entry.getValue()) {
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                                             copyLocation,
                                             stats,
                                             null);

                        // Open the local file to initialize checksum
                        ReadOnlyStorageMetadata metadata;
                        try {
                            metadata = new ReadOnlyStorageMetadata(copyLocation);
                        } catch(IOException e) {
                            logger.error("Error reading metadata file ", e);
                            throw new VoldemortException(e);
                        }

                        // Read checksum
                        String checkSumTypeString = (String) metadata.get(ReadOnlyStorageMetadata.CHECKSUM_TYPE);
                        String checkSumString = (String) metadata.get(ReadOnlyStorageMetadata.CHECKSUM);

                        if(checkSumTypeString != null && checkSumString != null) {

                            try {
                                origCheckSum = Hex.decodeHex(checkSumString.toCharArray());
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        if (!Utils.isReadableDir(directory)) {
            throw new VoldemortException(directory.getAbsolutePath() + " is not a readable directory.");
        }
      
        File metadataFile = new File(baseDir, ".metadata");
        ReadOnlyStorageMetadata metadata = new ReadOnlyStorageMetadata();
       
        // Check if metadata file exists. If not, create one with RO2 format.
        if (!metadataFile.exists()) {
            metadata.add(ReadOnlyStorageMetadata.FORMAT, ReadOnlyStorageFormat.READONLY_V2.getCode());
            try {
                FileUtils.writeStringToFile(metadataFile, metadata.toJsonString());
            } catch(IOException e) {
                logger.error("Cannot create metadata file ", e);
                throw new IOException("Unable to create metadata file " + metadataFile);
            }
        }
        // Read metadata file to populate metadata object
        if (Utils.isReadableFile(metadataFile)) {
            try {
                metadata = new ReadOnlyStorageMetadata(metadataFile);
            } catch(IOException e) {
                logger.warn("Cannot read metadata file, assuming default values");
            }
        }

        this.storageFormat = ReadOnlyStorageFormat.fromCode((String) metadata.get(ReadOnlyStorageMetadata.FORMAT,
                                                                                  ReadOnlyStorageFormat.READONLY_V2.getCode()));
        this.indexFileSizes = new ArrayList<Integer>();
        this.dataFileSizes = new ArrayList<Integer>();
        this.indexFiles = new ArrayList<MappedByteBuffer>();
        this.mappedIndexFileReader = new ArrayList<MappedFileReader>();
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Related Classes of voldemort.store.readonly.ReadOnlyStorageMetadata

  • voldemort.client.AdminServiceBasicTest
  • voldemort.client.protocol.admin.AdminClient$ReadOnlySpecificOperations
  • voldemort.client.rebalance.AdminRebalanceTest
  • voldemort.serialization.json.JsonReader
  • voldemort.serialization.json.JsonWriter
  • voldemort.server.protocol.hadoop.RestHadoopFetcher
  • voldemort.store.readonly.chunk.ChunkedFileSet
  • voldemort.store.readonly.fetcher.HdfsFetcher
  • voldemort.store.readonly.fetcher.HDFSFetcherAdvancedTest
  • voldemort.store.readonly.fetcher.HdfsFetcherTest
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