/**
* Copyright (c) 2013, impossibl.com
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of impossibl.com nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.impossibl.postgres.protocol.v30;
import com.impossibl.postgres.protocol.Command;
import com.impossibl.postgres.protocol.Notice;
import com.impossibl.postgres.protocol.v30.ProtocolImpl.ExecutionTimerTask;
import com.impossibl.postgres.utils.BlockingReadTimeoutException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import static java.lang.Long.MAX_VALUE;
import static java.util.Collections.emptyList;
public abstract class CommandImpl implements Command {
protected long networkTimeout;
protected Throwable exception;
protected Notice error;
protected List<Notice> notices;
@Override
public long getNetworkTimeout() {
return networkTimeout;
}
@Override
public void setNetworkTimeout(long timeout) {
this.networkTimeout = timeout;
}
@Override
public Notice getError() {
return error;
}
public void setError(Notice error) {
this.error = error;
}
@Override
public Throwable getException() {
return exception;
}
public void setException(Throwable cause) {
this.exception = cause;
}
public void addNotice(Notice notice) {
if (notices == null)
notices = new ArrayList<>();
notices.add(notice);
}
@Override
public List<Notice> getWarnings() {
if (notices == null)
return emptyList();
List<Notice> warnings = new ArrayList<>();
for (Notice notice : notices) {
if (notice.isWarning())
warnings.add(notice);
}
return warnings;
}
public void waitFor(ProtocolListener listener) throws IOException {
long networkTimeout = this.networkTimeout;
if (networkTimeout < 1) {
networkTimeout = MAX_VALUE;
}
synchronized (listener) {
while (!listener.isComplete() && !listener.isAborted() && networkTimeout > 0) {
long start = System.currentTimeMillis();
try {
listener.wait(networkTimeout);
}
catch (InterruptedException e) {
// Ignore
}
networkTimeout -= (System.currentTimeMillis() - start);
if (networkTimeout < 1) {
throw new BlockingReadTimeoutException("network timeout reached");
}
}
}
}
static class CancelExecutionTimerTask extends ExecutionTimerTask {
ProtocolImpl protocol;
public CancelExecutionTimerTask(ProtocolImpl protocol) {
this.protocol = protocol;
}
@Override
public void run() {
protocol.sendCancelRequest();
}
}
public void enableCancelTimer(final ProtocolImpl protocol, long timeout) {
if (timeout < 1)
return;
protocol.enableExecutionTimer(new CancelExecutionTimerTask(protocol), timeout);
}
public abstract void execute(ProtocolImpl protocol) throws IOException;
}