| /* |
| * 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.spark.bulkwriter.blobupload; |
| |
| import java.io.IOException; |
| import java.math.BigInteger; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.fasterxml.jackson.databind.ObjectMapper; |
| import com.fasterxml.jackson.databind.ObjectWriter; |
| import org.apache.cassandra.bridge.SSTableSummary; |
| |
| /** |
| * Manifest of all SSTables in the bundle |
| * It is a variant of {@link HashMap}, for the convenience of json serialization |
| */ |
| public class BundleManifest extends HashMap<String, BundleManifest.Entry> |
| { |
| public static final ObjectWriter OBJECT_WRITER = new ObjectMapper().writerWithDefaultPrettyPrinter(); |
| |
| private static final long serialVersionUID = 6593130321276240266L; |
| |
| public void addEntry(Entry manifestEntry) |
| { |
| super.put(manifestEntry.key, manifestEntry); |
| } |
| |
| public void persistTo(Path filePath) throws IOException |
| { |
| Files.createFile(filePath); |
| OBJECT_WRITER.writeValue(filePath.toFile(), this); |
| } |
| |
| /** |
| * Manifest of a single SSTable |
| * componentsChecksum include checksums of individual SSTable components |
| * startToken and endToken represents the token range of the SSTable |
| */ |
| public static class Entry |
| { |
| // uniquely identify a manifest entry |
| private final String key; |
| private final Map<String, String> componentsChecksum; |
| private final BigInteger startToken; |
| private final BigInteger endToken; |
| |
| @VisibleForTesting |
| Entry(String key, BigInteger startToken, BigInteger endToken) |
| { |
| this.key = key; |
| this.startToken = startToken; |
| this.endToken = endToken; |
| this.componentsChecksum = new HashMap<>(); |
| } |
| |
| public Entry(SSTableSummary summary) |
| { |
| this.key = summary.sstableId; |
| this.startToken = summary.firstToken; |
| this.endToken = summary.lastToken; |
| this.componentsChecksum = new HashMap<>(); |
| } |
| |
| public void addComponentChecksum(String component, String checksum) |
| { |
| componentsChecksum.put(component, checksum); |
| } |
| |
| @JsonProperty("components_checksum") |
| public Map<String, String> componentsChecksum() |
| { |
| return componentsChecksum; |
| } |
| |
| @JsonProperty("start_token") |
| public BigInteger startToken() |
| { |
| return startToken; |
| } |
| |
| @JsonProperty("end_token") |
| public BigInteger endToken() |
| { |
| return endToken; |
| } |
| } |
| } |