private void DeleteOldResults()
{
// get the list of input tasks
string[] strTasks = RegistryUtils.GetRegistryKeyValueNames(RegistryInputKey);
List <string> tasks = new List <string>();
foreach (string strTask in strTasks)
{
if (!string.IsNullOrEmpty(strTask) && strTask.StartsWith(TaskPrefix) && strTask != CurrentTaskName)
{
//save only WebsitePanel tasks
tasks.Add(strTask);
}
}
// get the list of task results
int deletedResults = 0;
string[] strResults = RegistryUtils.GetRegistryKeyValueNames(RegistryOutputKey);
foreach (string strResult in strResults)
{
if (!string.IsNullOrEmpty(strResult) && strResult.StartsWith(TaskPrefix) && strResult != CurrentTaskName)
{
// check if task result exists in the input tasks
if (!tasks.Contains(strResult))
{
DeleteRegistryKeyValue(RegistryOutputKey, strResult);
ServiceLog.WriteInfo(string.Format("Deleted activity result: {0}", strResult));
deletedResults++;
}
}
}
if (deletedResults > 0)
{
ServiceLog.WriteEnd(string.Format("{0} result(s) deleted", deletedResults));
}
}
private void ProcessTasks()
{
// delete old results
DeleteOldResults();
//process all tasks
while (true)
{
//load completed tasks results
string[] strResults = RegistryUtils.GetRegistryKeyValueNames(RegistryOutputKey);
List <string> results = new List <string>();
foreach (string strResult in strResults)
{
if (!string.IsNullOrEmpty(strResult) && strResult.StartsWith(TaskPrefix) && strResult != CurrentTaskName)
{
//save only WebsitePanel tasks
results.Add(strResult);
}
}
// sorted list of tasks - will be sorted by the TaskID (time in ticks)
SortedList <long, string> tasks = new SortedList <long, string>();
//load task definitions from input registry key
string[] strTasks = RegistryUtils.GetRegistryKeyValueNames(RegistryInputKey);
foreach (string strTask in strTasks)
{
if (results.Contains(strTask))
{
continue; // skip completed tasks
}
if (!string.IsNullOrEmpty(strTask) && strTask.StartsWith(TaskPrefix))
{
// extract Task ID parameter
int idx = strTask.LastIndexOf('-');
if (idx == -1)
{
continue;
}
string strTaskId = strTask.Substring(idx + 1);
long taskId = 0;
try
{
taskId = Int64.Parse(strTaskId);
}
catch
{
continue; // wrong task format
}
//save only WebsitePanel tasks
if (!tasks.ContainsKey(taskId))
{
tasks.Add(taskId, strTask);
}
}
}
if (tasks.Count == 0)
{
if (rebootRequired)
{
ServiceLog.WriteInfo("Reboot required");
RebootSystem();
return;
}
//start timers
StartPollTimer(); //starts task processing after poll interval
StartIdleTimer(); //stops service if idle
//no tasks - exit!
return;
}
else
{
//stop idle timer as we need to process tasks
StopIdleTimer();
}
ExecutionContext context = null;
foreach (long tid in tasks.Keys)
{
//find first correct task
string taskDefinition = tasks[tid];
string taskParameters = RegistryUtils.GetRegistryKeyStringValue(RegistryInputKey, taskDefinition);
if (taskDefinition.LastIndexOf("-") == -1 || taskDefinition.LastIndexOf('-') == taskDefinition.Length - 1)
{
ServiceLog.WriteError(string.Format("Task was deleted from queue as its definition is invalid : {0}", taskDefinition));
DeleteRegistryKeyValue(RegistryInputKey, taskDefinition);
//go to next task
continue;
}
string taskName = taskDefinition.Substring(0, taskDefinition.LastIndexOf("-")).Substring(TaskPrefix.Length);
string taskId = taskDefinition.Substring(taskDefinition.LastIndexOf('-') + 1);
if (!provisioningModules.ContainsKey(taskName))
{
ServiceLog.WriteError(string.Format("Task was deleted from queue as its definition was not found : {0}", taskName));
DeleteRegistryKeyValue(RegistryInputKey, taskDefinition);
//go to next task
continue;
}
//prepare execution context for correct task
context = new ExecutionContext();
context.ActivityID = taskId;
context.ActivityName = taskName;
ParseParameters(context.Parameters, taskParameters);
context.ActivityDefinition = taskDefinition;
break;
}
if (context != null)
{
string type = provisioningModules[context.ActivityName];
ExecutionResult res = null;
DateTime start = DateTime.Now;
try
{
//load module and run task
ServiceLog.WriteStart(string.Format("Starting '{0}' module...", context.ActivityName));
context.Progress = 0;
res = ModuleLoader.Run(type, ref context);
context.Progress = 100;
ServiceLog.WriteEnd(string.Format("'{0}' module finished.", context.ActivityName));
}
catch (Exception ex)
{
ServiceLog.WriteError("Unhandled exception:", ex);
res = new ExecutionResult();
res.ResultCode = -1;
res.ErrorMessage = string.Format("Unhandled exception : {0}", ex);
}
DateTime end = DateTime.Now;
SaveExecutionResult(context.ActivityDefinition, res, start, end);
//DeleteRegistryKeyValue(RegistryInputKey, context.ActivityDefinition);
if (res.RebootRequired)
{
rebootRequired = true;
}
}
}
}