/**
* 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.curator.connection;
import com.google.common.base.Preconditions;
import org.apache.curator.CuratorZookeeperClient;
import org.apache.curator.RetryLoop;
import org.apache.curator.utils.ThreadUtils;
import java.util.concurrent.Callable;
/**
* Curator's standard connection handling since 3.0.0
*
* @since 3.0.0
*/
public class StandardConnectionHandlingPolicy implements ConnectionHandlingPolicy
{
private final int expirationPercent;
public StandardConnectionHandlingPolicy()
{
this(100);
}
public StandardConnectionHandlingPolicy(int expirationPercent)
{
Preconditions.checkArgument((expirationPercent > 0) && (expirationPercent <= 100), "expirationPercent must be > 0 and <= 100");
this.expirationPercent = expirationPercent;
}
@Override
public int getSimulatedSessionExpirationPercent()
{
return expirationPercent;
}
@Override
public <T> T callWithRetry(CuratorZookeeperClientclient, Callable<T> proc) throws Exception
{
client.internalBlockUntilConnectedOrTimedOut();
T result = null;
RetryLoopretryLoop = client.newRetryLoop();
while ( retryLoop.shouldContinue() )
{
try
{
result = proc.call();
retryLoop.markComplete();
}
catch ( Exceptione )
{
ThreadUtils.checkInterrupted(e);
retryLoop.takeException(e);
}
}
return result;
}
@Override
public CheckTimeoutsResultcheckTimeouts(Callable<String> hasNewConnectionString, long connectionStartMs, int sessionTimeoutMs, int connectionTimeoutMs) throws Exception
{
if ( hasNewConnectionString.call() != null )
{
return CheckTimeoutsResult.NEW_CONNECTION_STRING;
}
return CheckTimeoutsResult.NOP;
}
}