+# Note
+# in spring 2010, an attempt was made to use pycurl instead of forking curl
+# it turned out, however, that after around 10 cycles of the nodemanager,
+# attempts to call GetSlivers were failing with a curl error 60
+# we are thus reverting to the version from tag curlwrapper.py-NodeManager-2.0-8
+# the (broken) pycurl version can be found in tags 2.0-9 and 2.0-10
+
from subprocess import PIPE, Popen
+from select import select
+import xmlrpclib
+import signal
+import os
+
+import logger
+verbose=False
+#verbose=True
-class CurlException(Exception): pass
+class Sopen(Popen):
+ def kill(self, signal = signal.SIGTERM):
+ os.kill(self.pid, signal)
-def retrieve(url, cacert=None, postdata=None, timeout=300):
- options = ('/usr/bin/curl', '--fail', '--silent')
- if cacert: options += ('--cacert', cacert)
- if postdata: options += ('--data', '@-')
- if timeout: options += ('--max-time', str(timeout))
- p = Popen(options + (url,), stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
+def retrieve(url, cacert=None, postdata=None, timeout=90):
+# command = ('/usr/bin/curl', '--fail', '--silent')
+ command = ('/usr/bin/curl', '--fail', )
+ if cacert: command += ('--cacert', cacert)
+ if postdata: command += ('--data', '@-')
+ if timeout:
+ command += ('--max-time', str(timeout))
+ command += ('--connect-timeout', str(timeout))
+ command += (url,)
+ if verbose:
+ print 'Invoking ',command
+ if postdata: print 'with postdata=',postdata
+ p = Sopen(command , stdin=PIPE, stdout=PIPE, stderr=PIPE, close_fds=True)
if postdata: p.stdin.write(postdata)
p.stdin.close()
+ sout, sin, serr = select([p.stdout,p.stderr],[],[], timeout)
+ if len(sout) == 0 and len(sin) == 0 and len(serr) == 0:
+ logger.verbose("curlwrapper: timed out after %s" % timeout)
+ p.kill(signal.SIGKILL)
data = p.stdout.read()
err = p.stderr.read()
rc = p.wait()
- if rc != 0: raise CurlException(err)
- else: return data
+ if rc != 0:
+ # when this triggers, the error sometimes doesn't get printed
+ logger.log ("curlwrapper: retrieve, got stderr <%s>"%err)
+ raise xmlrpclib.ProtocolError(url, rc, err, postdata)
+ else:
+ return data