これをできるだけ単純化しようとしましたが、それでもエラーが発生します。ポストリクエストを受信すると、すぐにフォークするはずの機能を実行する単純なhttpサーバー(ボトル)があります。親プロセスは単純にジョブ ID を返し、子プロセスが同じデータ (URL のリスト) を処理している間に終了します。入力関数と出力関数をすべて削除し、データをハードコーディングしましたが、プログラムはまだクラッシュしています。おもしろいのは、プログラムを変更して、http サーバーを起動し、ボトルが実行されるのを待つのではなく、コマンド ラインで直接実行することです。すべて正常に動作します。
#!/usr/bin/python
#This is a comment
import sys, time, bottle, os
from threading import Thread
from Queue import Queue
from bottle import route, run, request, abort
num_fetch_threads = 2
url_queue = Queue()
def fetchURLContent(i, q):
while True:
#print '%s: Looking for URLs in queue' % i
url = q.get()
#print 'URL found: %s' % url[0]
q.task_done()
time.sleep(1)
@route('/', method='POST') # or @route('/login', method='POST')
def main():
urls = ['http://www.yahoo.com', 'http://www.google.com']
newpid = os.fork()
if newpid == 0:
for i in range(num_fetch_threads):
worker = Thread(target=fetchURLContent, args=(i, url_queue))
worker.setDaemon(True)
worker.start()
print 'Queuing: ', url
for url in urls:
url_queue.put(url)
time.sleep(2)
print 'main thread waiting...'
url_queue.join()
print 'Done'
else:
print "Your job id is 5"
return
def webServer():
run(host='33.33.33.10', port=8080)
if __name__ == "__main__":
print 'Listening on 8080...'
webServer()
表示されるエラー メッセージは次のとおりです。
Listening on 8080...
Bottle v0.11.3 server starting up (using WSGIRefServer())...
Listening on http://33.33.33.10:8080/
Hit Ctrl-C to quit.
33.33.33.1 - - [19/Oct/2012 21:21:24] "POST / HTTP/1.1" 200 0
Traceback (most recent call last):
File "/usr/lib/python2.7/wsgiref/handlers.py", line 86, in run
self.finish_response()
File "/usr/lib/python2.7/wsgiref/handlers.py", line 128, in finish_response
self.finish_content()
File "/usr/lib/python2.7/wsgiref/handlers.py", line 246, in finish_content
self.send_headers()
9 url_queue = Queue()
File "/usr/lib/python2.7/wsgiref/handlers.py", line 268, in send_headers
self.send_preamble()
File "/usr/lib/python2.7/wsgiref/handlers.py", line 189, in send_preamble
self._write('HTTP/%s %s\r\n' % (self.http_version,self.status))
File "/usr/lib/python2.7/wsgiref/handlers.py", line 389, in _write
self.stdout.write(data)
File "/usr/lib/python2.7/socket.py", line 324, in write
self.flush()
File "/usr/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
----------------------------------------
Exception happened during processing of request from ('33.33.33.1', 57615)
Traceback (most recent call last):
File "/usr/lib/python2.7/SocketServer.py", line 284, in _handle_request_noblock
self.process_request(request, client_address)
File "/usr/lib/python2.7/SocketServer.py", line 310, in process_request
self.finish_request(request, client_address)
File "/usr/lib/python2.7/SocketServer.py", line 323, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python2.7/SocketServer.py", line 640, in __init__
self.finish()
File "/usr/lib/python2.7/SocketServer.py", line 693, in finish
self.wfile.flush()
File "/usr/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
----------------------------------------
何か案は?