xenadmin/XenModel/Actions/PureAsyncAction.cs

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/* Copyright (c) Citrix Systems Inc.
* 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.
*
* 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 HOLDER 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.
*/
using XenAdmin.Core;
using XenAdmin.Network;
using XenAPI;
namespace XenAdmin.Actions
{
// A PureAsyncAction is one for which we can determine the set of API calls it will make by doing
// an initial dummy run through the action using an RbacCollectorProxy.
// In order to achieve this, it must have the following properties:
// * No side effects (other than through the API).
// * It doesn't destroy its own variables as it runs.
// * No dialogs.
// * No waits. This generally rules out object creation actions.
// * No HTTP calls.
// * No new threads.
// * No API calls which are allowed to fail.
public abstract class PureAsyncAction : AsyncAction
{
protected PureAsyncAction(IXenConnection connection, string title, string description, bool SuppressHistory)
: base(connection, title, description, SuppressHistory)
{
}
protected PureAsyncAction(IXenConnection connection, string title, string description)
: base(connection, title, description)
{
}
protected PureAsyncAction(IXenConnection connection, string title)
: base(connection, title)
{
}
protected PureAsyncAction(IXenConnection connection, string title, bool suppress_history)
: base(connection, title, suppress_history)
{
}
public override RbacMethodList GetApiMethodsToRoleCheck
{
get
{
System.Diagnostics.Trace.Assert(ApiMethodsToRoleCheck.Count == 0); // shouldn't set ApiMethodsToRoleCheck for PureAsyncAction: it will be ignored
RbacMethodList rbacMethods = new RbacMethodList();
Session = new Session(RbacCollectorProxy.GetProxy(rbacMethods), Connection);
base.SuppressProgressReport = true;
Run();
base.SuppressProgressReport = false;
return rbacMethods;
}
}
}
}