| /** |
| * 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.metron.enrichment.converter; |
| |
| import com.google.common.base.Function; |
| import com.google.common.collect.Iterables; |
| import org.apache.hadoop.hbase.Cell; |
| import org.apache.hadoop.hbase.client.Get; |
| import org.apache.hadoop.hbase.client.Put; |
| import org.apache.hadoop.hbase.client.Result; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.metron.enrichment.lookup.LookupKV; |
| import org.apache.metron.enrichment.lookup.LookupKey; |
| import org.apache.metron.enrichment.lookup.LookupValue; |
| |
| import javax.annotation.Nullable; |
| import java.io.IOException; |
| import java.util.*; |
| |
| |
| public abstract class AbstractConverter<KEY_T extends LookupKey, VALUE_T extends LookupValue> implements HbaseConverter<KEY_T,VALUE_T> { |
| public static Function<Cell, Map.Entry<byte[], byte[]>> CELL_TO_ENTRY = new Function<Cell, Map.Entry<byte[], byte[]>>() { |
| |
| @Nullable |
| @Override |
| public Map.Entry<byte[], byte[]> apply(@Nullable Cell cell) { |
| return new AbstractMap.SimpleEntry<>(cell.getQualifier(), cell.getValue()); |
| } |
| }; |
| @Override |
| public Put toPut(String columnFamily, KEY_T key, VALUE_T values) throws IOException { |
| Put put = new Put(key.toBytes()); |
| byte[] cf = Bytes.toBytes(columnFamily); |
| for(Map.Entry<byte[], byte[]> kv : values.toColumns()) { |
| put.add(cf, kv.getKey(), kv.getValue()); |
| } |
| return put; |
| } |
| |
| public LookupKV<KEY_T, VALUE_T> fromPut(Put put, String columnFamily, KEY_T key, VALUE_T value) throws IOException { |
| key.fromBytes(put.getRow()); |
| byte[] cf = Bytes.toBytes(columnFamily); |
| value.fromColumns(Iterables.transform(put.getFamilyCellMap().get(cf), CELL_TO_ENTRY)); |
| return new LookupKV<>(key, value); |
| } |
| |
| @Override |
| public Result toResult(String columnFamily, KEY_T key, VALUE_T values) throws IOException { |
| Put put = toPut(columnFamily, key, values); |
| return Result.create(put.getFamilyCellMap().get(Bytes.toBytes(columnFamily))); |
| } |
| |
| public LookupKV<KEY_T, VALUE_T> fromResult(Result result, String columnFamily, KEY_T key, VALUE_T value) throws IOException { |
| if(result == null || result.getRow() == null) { |
| return null; |
| } |
| key.fromBytes(result.getRow()); |
| byte[] cf = Bytes.toBytes(columnFamily); |
| NavigableMap<byte[], byte[]> cols = result.getFamilyMap(cf); |
| value.fromColumns(cols.entrySet()); |
| return new LookupKV<>(key, value); |
| } |
| @Override |
| public Get toGet(String columnFamily, KEY_T key) { |
| Get ret = new Get(key.toBytes()); |
| ret.addFamily(Bytes.toBytes(columnFamily)); |
| return ret; |
| } |
| |
| public static Iterable<Map.Entry<byte[], byte[]>> toEntries(byte[]... kvs) { |
| if(kvs.length % 2 != 0) { |
| throw new IllegalStateException("Must be an even size"); |
| } |
| List<Map.Entry<byte[], byte[]>> ret = new ArrayList<>(kvs.length/2); |
| for(int i = 0;i < kvs.length;i += 2) { |
| ret.add(new AbstractMap.SimpleImmutableEntry<>(kvs[i], kvs[i+1])) ; |
| } |
| return ret; |
| } |
| } |