[ovirt-devel] add a ***Command for a button
Oved Ourfali
oourfali at redhat.com
Fri Aug 8 08:20:58 UTC 2014
Hi Didn't do a too deep code review, but from a first glance
You need to add a new VdcActionType that is called BackupInfo, and use that when you call RunAction. Hope it helps,
Oved On Aug 8, 2014 11:11 AM, =?UTF-8?B?5Yqb5rOiIOeOiw==?= <wlbleaboy at 126.com> wrote:
Hi, everyone:
I added a button on the Template Tab, in the client side, It’s OK,
Added the button’s callback like this:
=======================================================================
private void backup()
{
BackupInfoParameters param = new BackupInfoParameters();
Frontend.RunAction(VdcActionType.Unknown, param, new
IFrontendActionAsyncCallback() {
@Override
public void executed(FrontendActionAsyncResult result) {
}
});
}
=======================================================================
The BackupInfoCommand.java is :
=======================================================================
package org.ovirt.engine.core.bll;
import org.ovirt.engine.core.bll.utils.PermissionSubject;
import org.ovirt.engine.core.common.action.BackupInfoParameters;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
/**
* Created by leaboy on 8/7/14.
*/
public class BackupInfoCommand <T extends BackupInfoParameters> extends
CommandBase<T>{
public BackupInfoCommand(T parameters){
super(parameters);
}
@Override
public List<PermissionSubject> getPermissionCheckSubjects() {
return Collections.emptyList();
}
@Override
protected boolean canDoAction() {
return true;
}
@Override
protected void executeCommand() {
int a;
a = 1;
try{
Runtime.getRuntime().exec("touch /tmp/tmp.txt");
}catch (IOException e){
e.printStackTrace();
}
}
}
=======================================================================
And the BackupInfoParameters.java is:
=======================================================================
package org.ovirt.engine.core.common.action;
/**
* Created by leaboy on 8/7/14.
*/
public class BackupInfoParameters extends VdcActionParametersBase implements
java.io.Serializable{
private static final long serialVersionUID = -1363077467684414051L;
private VdcActionType _actionType;
//public BackupInfoParameters(){}
public BackupInfoParameters(){_actionType = VdcActionType.Unknown;}
public VdcActionType getActionType() {
return _actionType;
}
}
=======================================================================
Built the code success, but when I clicked the button, got a dialog with the
error info:
Error while executing action: A Request to the Server failed with the
following Status Code: 500
I debug it , find the error is raised at :
protected VdcReturnValueBase evaluateCorrelationId(CommandBase<?>
commandBase) {
VdcReturnValueBase returnValue = null;
// Evaluate and set the correlationId on the parameters, fails on
invalid correlation id
returnValue =
ExecutionHandler.evaluateCorrelationId(commandBase.getParameters());
if (returnValue != null) {
log.warnFormat("CanDoAction of action {0} failed. Reasons: {1}",
commandBase.getActionType(),
StringUtils.join(returnValue.getCanDoActionMessages(),
','));
}
// Set the correlation-id on the command
commandBase.setCorrelationId(commandBase.getParameters().getCorrelationId())
;
return returnValue;
}
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