/*
* 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.nifi.hbase;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.nifi.controller.AbstractControllerService;
import org.apache.nifi.hbase.put.PutColumn;
import org.apache.nifi.hbase.put.PutFlowFile;
import org.apache.nifi.hbase.scan.Column;
import org.apache.nifi.hbase.scan.ResultCell;
import org.apache.nifi.hbase.scan.ResultHandler;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class MockHBaseClientService extends AbstractControllerService implements HBaseClientService {
private Map<String,ResultCell[]> results = new HashMap<>();
private Map<String, List<PutFlowFile>> flowFilePuts = new HashMap<>();
private boolean throwException = false;
private int numScans = 0;
@Override
public void put(String tableName, Collection<PutFlowFile> puts) throws IOException {
if (throwException) {
throw new IOException("exception");
}
this.flowFilePuts.put(tableName, new ArrayList<>(puts));
}
@Override
public void put(String tableName, byte[] startRow, Collection<PutColumn> columns) throws IOException {
throw new UnsupportedOperationException();
}
@Override
public void scan(String tableName, byte[] startRow, byte[] endRow, Collection<Column> columns, ResultHandler handler) throws IOException {
if (throwException) {
throw new IOException("exception");
}
for (final Map.Entry<String,ResultCell[]> entry : results.entrySet()) {
List<ResultCell> matchedCells = new ArrayList<>();
if (columns == null || columns.isEmpty()) {
Arrays.stream(entry.getValue()).forEach(e -> matchedCells.add(e));
} else {
for (Column column : columns) {
String colFam = new String(column.getFamily(), StandardCharsets.UTF_8);
String colQual = new String(column.getQualifier(), StandardCharsets.UTF_8);
for (ResultCell cell : entry.getValue()) {
String cellFam = new String(cell.getFamilyArray(), StandardCharsets.UTF_8);
String cellQual = new String(cell.getQualifierArray(), StandardCharsets.UTF_8);
if (colFam.equals(cellFam) && colQual.equals(cellQual)) {
matchedCells.add(cell);
}
}
}
}
handler.handle(entry.getKey().getBytes(StandardCharsets.UTF_8), matchedCells.toArray(new ResultCell[matchedCells.size()]));
}
numScans++;
}
@Override
public void scan(String tableName, Collection<Column> columns, String filterExpression, long minTime, ResultHandler handler) throws IOException {
if (throwException) {
throw new IOException("exception");
}
// pass all the staged data to the handler
for (final Map.Entry<String,ResultCell[]> entry : results.entrySet()) {
handler.handle(entry.getKey().getBytes(StandardCharsets.UTF_8), entry.getValue());
}
numScans++;
}
public void addResult(final String rowKey, final Map<String, String> cells, final long timestamp) {
final byte[] rowArray = rowKey.getBytes(StandardCharsets.UTF_8);
final ResultCell[] cellArray = new ResultCell[cells.size()];
int i = 0;
for (final Map.Entry<String, String> cellEntry : cells.entrySet()) {
final ResultCell cell = new ResultCell();
cell.setRowArray(rowArray);
cell.setRowOffset(0);
cell.setRowLength((short) rowArray.length);
final String cellValue = cellEntry.getValue();
final byte[] valueArray = cellValue.getBytes(StandardCharsets.UTF_8);
cell.setValueArray(valueArray);
cell.setValueOffset(0);
cell.setValueLength(valueArray.length);
final byte[] familyArray = "nifi".getBytes(StandardCharsets.UTF_8);
cell.setFamilyArray(familyArray);
cell.setFamilyOffset(0);
cell.setFamilyLength((byte) familyArray.length);
final String qualifier = cellEntry.getKey();
final byte[] qualifierArray = qualifier.getBytes(StandardCharsets.UTF_8);
cell.setQualifierArray(qualifierArray);
cell.setQualifierOffset(0);
cell.setQualifierLength(qualifierArray.length);
cell.setTimestamp(timestamp);
cellArray[i++] = cell;
}
results.put(rowKey, cellArray);
}
public Map<String, List<PutFlowFile>> getFlowFilePuts() {
return flowFilePuts;
}
public void setThrowException(boolean throwException) {
this.throwException = throwException;
}
public int getNumScans() {
return numScans;
}
@Override
public byte[] toBytes(final boolean b) {
return new byte[] { b ? (byte) -1 : (byte) 0 };
}
@Override
public byte[] toBytes(long l) {
byte [] b = new byte[8];
for (int i = 7; i > 0; i--) {
b[i] = (byte) l;
l >>>= 8;
}
b[0] = (byte) l;
return b;
}
@Override
public byte[] toBytes(final double d) {
return toBytes(Double.doubleToRawLongBits(d));
}
@Override
public byte[] toBytes(final String s) {
return s.getBytes(StandardCharsets.UTF_8);
}
@Override
public byte[] toBytesBinary(String s) {
return Bytes.toBytesBinary(s);
}
}