/**
* 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.hadoop.hbase.client;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HRegionLocation;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.client.HConnectionManager.HConnectionImplementation;
import org.apache.hadoop.hbase.client.HConnectionManager.HConnectionKey;
import org.apache.hadoop.hbase.ipc.HRegionInterface;
import org.mockito.Mockito;
/**
* {@link HConnection} testing utility.
*/
public class HConnectionTestingUtility {
/*
* Not part of {@link HBaseTestingUtility} because this class is not
* in same package as {@link HConnection}. Would have to reveal ugly
* {@link HConnectionManager} innards to HBaseTestingUtility to give it access.
*/
/**
* Get a Mocked {@link HConnection} that goes with the passed <code>conf</code>
* configuration instance. Minimally the mock will return
* <code>conf</conf> when {@link HConnection#getConfiguration()} is invoked.
* Be sure to shutdown the connection when done by calling
* {@link HConnectionManager#deleteConnection(Configuration, boolean)} else it
* will stick around; this is probably not what you want.
* @param conf configuration
* @return HConnection object for <code>conf</code>
* @throws ZooKeeperConnectionException
*/
public static HConnection getMockedConnection(final Configuration conf)
throws ZooKeeperConnectionException {
HConnectionKey connectionKey = new HConnectionKey(conf);
synchronized (HConnectionManager.HBASE_INSTANCES) {
HConnectionImplementation connection =
HConnectionManager.HBASE_INSTANCES.get(connectionKey);
if (connection == null) {
connection = Mockito.mock(HConnectionImplementation.class);
Mockito.when(connection.getConfiguration()).thenReturn(conf);
HConnectionManager.HBASE_INSTANCES.put(connectionKey, connection);
}
return connection;
}
}
/**
* Calls {@link #getMockedConnection(Configuration)} and then mocks a few
* more of the popular {@link HConnection} methods so they do 'normal'
* operation (see return doc below for list). Be sure to shutdown the
* connection when done by calling
* {@link HConnectionManager#deleteConnection(Configuration, boolean)} else it
* will stick around; this is probably not what you want.
* @param implementation An {@link HRegionInterface} instance; you'll likely
* want to pass a mocked HRS; can be null.
*
* @param conf Configuration to use
* @param implementation An HRegionInterface; can be null but is usually
* itself a mock.
* @param sn ServerName to include in the region location returned by this
* <code>implementation</code>
* @param hri HRegionInfo to include in the location returned when
* getRegionLocation is called on the mocked connection
* @return Mock up a connection that returns a {@link Configuration} when
* {@link HConnection#getConfiguration()} is called, a 'location' when
* {@link HConnection#getRegionLocation(byte[], byte[], boolean)} is called,
* and that returns the passed {@link HRegionInterface} instance when
* {@link HConnection#getHRegionConnection(String, int)}
* is called (Be sure call
* {@link HConnectionManager#deleteConnection(org.apache.hadoop.conf.Configuration, boolean)}
* when done with this mocked Connection.
* @throws IOException
*/
public static HConnection getMockedConnectionAndDecorate(final Configuration conf,
final HRegionInterface implementation, final ServerName sn, final HRegionInfo hri)
throws IOException {
HConnection c = HConnectionTestingUtility.getMockedConnection(conf);
Mockito.doNothing().when(c).close();
// Make it so we return a particular location when asked.
final HRegionLocation loc = new HRegionLocation(hri, sn.getHostname(), sn.getPort());
Mockito.when(c.getRegionLocation((byte[]) Mockito.any(),
(byte[]) Mockito.any(), Mockito.anyBoolean())).
thenReturn(loc);
Mockito.when(c.locateRegion((byte[]) Mockito.any(), (byte[]) Mockito.any())).
thenReturn(loc);
if (implementation != null) {
// If a call to getHRegionConnection, return this implementation.
Mockito.when(c.getHRegionConnection(Mockito.anyString(), Mockito.anyInt())).
thenReturn(implementation);
}
return c;
}
/**
* Get a Mockito spied-upon {@link HConnection} that goes with the passed
* <code>conf</code> configuration instance.
* Be sure to shutdown the connection when done by calling
* {@link HConnectionManager#deleteConnection(Configuration, boolean)} else it
* will stick around; this is probably not what you want.
* @param conf configuration
* @return HConnection object for <code>conf</code>
* @throws ZooKeeperConnectionException
* @see http://mockito.googlecode.com/svn/branches/1.6/javadoc/org/mockito/Mockito.html#spy(T)
*/
public static HConnection getSpiedConnection(final Configuration conf)
throws ZooKeeperConnectionException {
HConnectionKey connectionKey = new HConnectionKey(conf);
synchronized (HConnectionManager.HBASE_INSTANCES) {
HConnectionImplementation connection =
HConnectionManager.HBASE_INSTANCES.get(connectionKey);
if (connection == null) {
connection = Mockito.spy(new HConnectionImplementation(conf, true));
HConnectionManager.HBASE_INSTANCES.put(connectionKey, connection);
}
return connection;
}
}
/**
* @return Count of extant connection instances
*/
public static int getConnectionCount() {
synchronized (HConnectionManager.HBASE_INSTANCES) {
return HConnectionManager.HBASE_INSTANCES.size();
}
}
}