/// <summary>
/// Tries to create a new task machine.
/// </summary>
/// <param name="userTask">Task</param>
internal static void TryCreateTaskMachine(Task userTask)
{
PSharpRuntime.Assert(PSharpRuntime.TaskScheduler is TaskWrapperScheduler, "Unable to wrap " +
"the task in a machine, because the task wrapper scheduler is not enabled.\n");
TaskMachine taskMachine = new TaskMachine(PSharpRuntime.TaskScheduler as TaskWrapperScheduler, userTask);
MachineId mid = taskMachine.Id;
Output.Log("<CreateLog> TaskMachine({0}) is created.", mid.MVal);
Task task = new Task(() =>
{
PSharpRuntime.BugFinder.NotifyTaskStarted();
taskMachine.Run();
PSharpRuntime.BugFinder.NotifyTaskCompleted();
});
lock (PSharpRuntime.Lock)
{
PSharpRuntime.MachineTasks.Add(task);
}
PSharpRuntime.BugFinder.NotifyNewTaskCreated(task.Id, taskMachine);
if (PSharpRuntime.Configuration.ScheduleIntraMachineConcurrency)
{
task.Start(PSharpRuntime.TaskScheduler);
}
else
{
task.Start();
}
PSharpRuntime.BugFinder.WaitForTaskToStart(task.Id);
PSharpRuntime.BugFinder.Schedule();
}
/// <summary>
/// Setup the session with a configuration Node.
/// </summary>
protected void OnConfigLoad(Configuration config)
{
_lock.Take();
// skip if no longer running
if (!Running)
{
_lock.Release();
return;
}
// persist the config node
Node node = config.Node;
// setup updater watch
_updater = new Watch(1000, true, Update, false);
// number of crawlers to initialize with
_crawlerCount = node.Default((ThreadHandle.HandleCount + 1) / 2, "Crawler_Count");
// url control parameters
UrlControl.UrlBufferSize = node.Default(20, "Url_Buffer");
// parse control parameters
ParseControl.HostNewScore = node.Default(50, "Host_New_Score");
ParseControl.HostParseScore = node.Default(-20, "Host_Parse_Score");
ParseControl.HostAttemptScore = node.Default(-40, "Host_Attempt_Score");
ParseControl.HostAssetScore = node.Default(10, "Host_Asset_Score");
ParseControl.HostMaxScore = node.Default(1000, "Host_Max_Score");
// crawler parameters
CrawlerUrlBufferSize = node.Default(1000, "Url_Crawl_Buffer");
CrawlerByteBuffer = node.Default(4096, "Byte_Buffer");
CrawlerMaxBytes = (int)node.Default(Global.Kilobyte * 100, "Max_Bytes");
CrawlerMinBytes = (int)node.Default(Global.Kilobyte * 55, "Min_Bytes");
CrawlerMaxConnectTimeout = node.Default(5000, "Max_Connect_Timeout");
CrawlerMinConnectTimeout = node.Default(3000, "Min_Connect_Timeout");
CrawlerMaxProcessTimeout = node.Default(10000, "Max_Process_Timeout");
CrawlerMinProcessTimeout = node.Default(7000, "Min_Process_Timeout");
CrawlerMaxCookieCount = node.Default(8, "Max_Cookie_Count");
CrawlerMaxCookieSize = node.Default(3435, "Max_Cookie_Size");
// were any identities specified?
if (node["Identities"].ArraySet)
{
// iterate the defined headers
foreach (Node identityNode in node["Identities"].Array)
{
if (identityNode.DictionarySet)
{
// start the name value collection
Identity identity = new Identity(true);
// iterate the headers in the identity
foreach (KeyValuePair <string, Node> entry in identityNode.Dictionary)
{
identity.Add(entry.Key, entry.Value.String);
}
}
}
}
// have the url root files been set?
if (node["Files"].ArraySet)
{
// yes, add the root file paths to the file extractor
foreach (Node pathNode in node["Files"].Array)
{
if (!pathNode["Parsed"].Bool)
{
_lock.Release();
AddUrlFile(pathNode.String);
_lock.Take();
}
}
}
// run the task machine to start the session
TaskMachine tm = new TaskMachine();
tm.AddOnDone(() => _updater.Run = true);
tm.Add("Set up parse control", ParseControl.Start);
tm.Add("Set up URL control", UrlControl.Start);
#if INFO
tm.OnTask = new ActionSet <string>(s => Log.Info(s));
#endif
tm.Run();
config.Save();
_lock.Release();
Log.Debug("Crawler session configuration loaded.");
}