100 lines
3.2 KiB
Python
100 lines
3.2 KiB
Python
import gevent, time, logging, shutil, os
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from Peer import Peer
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from Debug import Debug
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class Worker:
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def __init__(self, manager, peer):
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self.manager = manager
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self.peer = peer
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self.task = None
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self.key = None
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self.running = False
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self.thread = None
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def __str__(self):
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return "Worker %s %s" % (self.manager.site.address_short, self.key)
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def __repr__(self):
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return "<%s>" % self.__str__()
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# Downloader thread
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def downloader(self):
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self.peer.hash_failed = 0 # Reset hash error counter
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while self.running:
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# Try to pickup free file download task
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task = self.manager.getTask(self.peer)
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if not task: # Die, no more task
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self.manager.log.debug("%s: No task found, stopping" % self.key)
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break
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if not task["time_started"]: task["time_started"] = time.time() # Task started now
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if task["workers_num"] > 0: # Wait a bit if someone already working on it
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self.manager.log.debug("%s: Someone already working on %s, sleeping 1 sec..." % (self.key, task["inner_path"]))
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time.sleep(1)
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self.manager.log.debug("%s: %s, task done after sleep: %s" % (self.key, task["inner_path"], task["done"]))
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if task["done"] == False:
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self.task = task
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site = task["site"]
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task["workers_num"] += 1
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try:
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buff = self.peer.getFile(site.address, task["inner_path"])
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except Exception, err:
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self.manager.log.debug("%s: getFile error: err" % (self.key, err))
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buff = None
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if self.running == False: # Worker no longer needed or got killed
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self.manager.log.debug("%s: No longer needed, returning: %s" % (self.key, task["inner_path"]))
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break
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if buff: # Download ok
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correct = site.content_manager.verifyFile(task["inner_path"], buff)
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else: # Download error
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correct = False
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if correct == True or correct == None: # Hash ok or same file
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self.manager.log.debug("%s: Hash correct: %s" % (self.key, task["inner_path"]))
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if correct == True and task["done"] == False: # Save if changed and task not done yet
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buff.seek(0)
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file_path = site.storage.getPath(task["inner_path"])
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site.storage.write(task["inner_path"], buff)
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if task["done"] == False: self.manager.doneTask(task)
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task["workers_num"] -= 1
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self.task = None
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else: # Hash failed
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self.manager.log.debug("%s: Hash failed: %s, failed peers: %s" % (self.key, task["inner_path"], len(task["failed"])))
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task["failed"].append(self.peer)
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self.task = None
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self.peer.hash_failed += 1
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if self.peer.hash_failed >= max(len(self.manager.tasks), 3): # More fails than tasks number but atleast 3: Broken peer
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break
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task["workers_num"] -= 1
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time.sleep(1)
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self.peer.onWorkerDone()
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self.running = False
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self.manager.removeWorker(self)
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# Start the worker
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def start(self):
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self.running = True
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self.thread = gevent.spawn(self.downloader)
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# Skip current task
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def skip(self):
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self.manager.log.debug("%s: Force skipping" % self.key)
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if self.thread:
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self.thread.kill(exception=Debug.Notify("Worker stopped"))
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self.start()
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# Force stop the worker
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def stop(self):
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self.manager.log.debug("%s: Force stopping" % self.key)
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self.running = False
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if self.thread:
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self.thread.kill(exception=Debug.Notify("Worker stopped"))
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del self.thread
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self.manager.removeWorker(self)
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