xenadmin/XenModel/Actions/Host/RunPluginAction.cs

/* Copyright (c) Citrix Systems, Inc. 
 * All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
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 *     following disclaimer. 
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 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
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using System;
using System.Collections.Generic;
using XenAdmin.Network;
using XenAPI;


namespace XenAdmin.Actions
{
    public class RunPluginAction : PureAsyncAction
    {
        private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

        public class Failed : Exception
        {
            public object Result;
            public Failed(object result) : base(result.ToString())
            {
                Result = result;
            }
        }

        private string Plugin;
        private string Function;
        private Dictionary<string, string> Args;

        public RunPluginAction(IXenConnection connection, Host host, string plugin, string function, Dictionary<string, string> args, bool hide_from_logs)
            : base(connection, string.Format(Messages.PLUGIN_TITLE, plugin),hide_from_logs)
        {
            Host = host;
            Plugin = plugin;
            Function = function;
            Args = args;
        }

        protected override void Run()
        {
            Description = string.Format(Messages.PLUGIN_CALLING, Plugin);
            Result = XenAPI.Host.call_plugin(Session, Host.opaque_ref, Plugin, Function, Args);

            if (Result == "True")
            {
                Description = string.Format(Messages.PLUGIN_SUCCEED, Plugin);
                return;
            }

            if (Result.StartsWith("True"))
            {
                Description = string.Format(Messages.PLUGIN_SUCCEED, Plugin);
                Result = Result.Remove(0, 4);
                return;
            }

            log.WarnFormat("Plugin call {0}.{1}({2}) on {3} failed with {4}", Plugin, Function, ArgString(), Host.uuid, Result);
            Exception = new Failed(Result);
        }

        private string ArgString()
        {
            List<string> l = new List<string>();
            foreach (string key in Args.Keys)
            {
                l.Add(key + "=" + Args[key]);
            }
            return string.Join(", ", l.ToArray());
        }
    }
}