opendev
/
gear
Code Issues Proposed changes

Initial commit. 

Change-Id: Ia612b44511b19e22a73cb6d4662fc02207af9321
This commit is contained in:
James E. Blair 2013-04-05 12:08:58 -07:00
parent 6044080423
commit b6097dc7ed
4 changed files with 825 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
.gitignore vendored Normal file
View File

@ -0,0 +1,8 @@
*.egg-info
*.pyc
.tox
AUTHORS
build/*
ChangeLog
doc/build/*
dist/

202
LICENSE Normal file
View File

@ -0,0 +1,202 @@
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

557
gear/__init__.py Normal file
View File

@ -0,0 +1,557 @@
# Copyright 2013 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import struct
import socket
import threading
import select
import os
import time
import logging
import constants
PRECEDENCE_NORMAL=0
PRECEDENCE_LOW=1
PRECEDENCE_HIGH=2
class ConnectionError(Exception):
pass
class InvalidDataError(Exception):
pass
class ConfigurationError(Exception):
pass
class NoConnectedServersError(Exception):
pass
class UnknownJobError(Exception):
pass
class Connection(object):
log = logging.getLogger("gear.Connection")
def __init__(self, host, port):
self.host = host
self.port = port
self._init()
def _init(self):
self.conn = None
self.connected = False
self.pending_jobs = []
self.related_jobs = {}
def __repr__(self):
return '<gear.Connection 0x%x host: %s port: %s>' % (
id(self), self.host, self.port)
def connect(self):
self.log.debug("Connecting to %s port %s" % (self.host, self.port))
s = None
for res in socket.getaddrinfo(self.host, self.port,
socket.AF_UNSPEC, socket.SOCK_STREAM):
af, socktype, proto, canonname, sa = res
try:
s = socket.socket(af, socktype, proto)
except socket.error as msg:
s = None
continue
try:
s.connect(sa)
except socket.error as msg:
s.close()
s = None
continue
break
if s is None:
self.log.debug("Error connecting to %s port %s" % (
self.host, self.port))
raise ConnectionError("Unable to open socket")
self.log.debug("Connected to %s port %s" % (self.host, self.port))
self.conn = s
self.connected = True
def disconnect(self):
self.log.debug("Disconnected from %s port %s" % (self.host, self.port))
self._init()
def reconnect(self):
self.disconnect()
self.connect()
def sendPacket(self, packet):
self.conn.send(packet.toBinary())
def readPacket(self):
packet = b''
datalen = 0
code = None
ptype = None
while True:
c = self.conn.recv(1)
if not c:
return None
packet += c
if len(packet) == 12:
code, ptype, datalen = struct.unpack('!4sii', packet)
elif len(packet) == datalen+12:
return Packet(code, ptype, packet[12:], connection=self)
class Packet(object):
log = logging.getLogger("gear.Packet")
def __init__(self, code, ptype, data, connection=None):
if code[0] != '\x00':
raise InvalidDataError("First byte of packet must be 0")
self.code = code
self.ptype = ptype
self.data = data
self.connection = connection
def __repr__(self):
ptype = constants.types.get(self.ptype, 'UNKNOWN')
return '<gear.Packet 0x%x type: %s>' % (id(self), ptype)
def toBinary(self):
b = struct.pack('!4sii', self.code, self.ptype, len(self.data))
b += self.data
return b
def getArgument(self, index):
return self.data.split('\x00')[index]
def getJob(self):
handle = self.getArgument(0)
job = self.connection.related_jobs.get(handle)
if not job:
raise UnknownJobError()
return job
class Client(object):
log = logging.getLogger("gear.Client")
def __init__(self):
self.active_connections = []
self.inactive_connections = []
self.connection_index = -1
# A lock and notification mechanism to handle not having any
# current connections
self.connections_condition = threading.Condition()
# A pipe to wake up the poll loop in case it needs to restart
self.wake_read, self.wake_write = os.pipe()
self.poll_thread = threading.Thread(name="Gearman client poll",
target=self._doPollLoop)
self.poll_thread.start()
self.connect_thread = threading.Thread(name="Gearman client connect",
target=self._doConnectLoop)
self.connect_thread.start()
def __repr__(self):
return '<gear.Client 0x%x>' % id(self)
def addServer(self, host, port=4730):
"""Add a server to the client's connection pool.
Any number of Gearman servers may be added to a client. The
client will connect to all of them and send jobs to them in a
round-robin fashion. When servers are disconnected, the
client will automatically remove them from the pool,
continuously try to reconnect to them, and return them to the
pool when reconnected. New servers may be added at any time.
This is a non-blocking call that will return regardless of
whether the initial connection succeeded. If you need to
ensure that a connection is ready before proceeding, see
:py:meth:`waitForServer`.
:arg str host: The hostname or IP address of the server.
:arg int port: The port on which the gearman server is listening.
"""
self.log.debug("Adding server %s port %s" % (host, port))
self.connections_condition.acquire()
try:
for conn in self.active_connections + self.inactive_connections:
if conn.host == host and conn.port == port:
raise ConfigurationError("Host/port already specified")
conn = Connection(host, port)
self.inactive_connections.append(conn)
self.connections_condition.notifyAll()
finally:
self.connections_condition.release()
def waitForServer(self):
"""Wait for at least one server to be connected.
Block until at least one gearman server is connected.
"""
connected = False
while True:
self.connections_condition.acquire()
while not self.active_connections:
self.log.debug("Waiting for at least one active connection")
self.connections_condition.wait()
if self.active_connections:
self.log.debug("Active connection found")
connected = True
self.connections_condition.release()
if connected:
return
def _doConnectLoop(self):
# Outer run method of the reconnection thread
while True:
self.connections_condition.acquire()
while not self.inactive_connections:
self.log.debug("Waiting for change in available servers "
"to reconnect")
self.connections_condition.wait()
self.connections_condition.release()
self.log.debug("Checking if servers need to be reconnected")
try:
if not self._connectLoop():
# Nothing happened
time.sleep(2)
except:
self.log.exception("Exception in connect loop:")
def _connectLoop(self):
# Inner method of the reconnection loop, triggered by
# a connection change
success = False
for conn in self.inactive_connections[:]:
self.log.debug("Trying to reconnect %s" % conn)
try:
conn.reconnect()
except ConnectionError:
self.log.debug("Unable to connect to %s" % conn)
continue
except:
self.log.error("Exception while connecting to %s" % conn)
continue
self.connections_condition.acquire()
self.inactive_connections.remove(conn)
self.active_connections.append(conn)
self.connections_condition.notifyAll()
os.write(self.wake_write, '1\n')
self.connections_condition.release()
success = True
return success
def _lostConnection(self, conn):
# Called as soon as a connection is detected as faulty. Remove
# it and return ASAP and let the connection thread deal with it.
self.log.debug("Marking %s as disconnected" % conn)
self.connections_condition.acquire()
self.active_connections.remove(conn)
self.inactive_connections.append(conn)
self.connections_condition.notifyAll()
self.connections_condition.release()
def getConnection(self):
"""Return a connected server.
Finds the next scheduled connected server in the round-robin
rotation and returns it. It is not usually necessary to use
this method external to the library, as more consumer-oriented
methods such as submitJob already use it internally, but is
available nonetheless if necessary.
"""
conn = None
try:
self.connections_condition.acquire()
if not self.active_connections:
raise NoConnectedServersError("No connected Gearman servers")
self.connection_index += 1
if self.connection_index >= len(self.active_connections):
self.connection_index = 0
conn = self.active_connections[self.connection_index]
finally:
self.connections_condition.release()
return conn
def _doPollLoop(self):
# Outer run method of poll thread.
while True:
self.connections_condition.acquire()
while not self.active_connections:
self.log.debug("Waiting for change in available servers "
"to poll")
self.connections_condition.wait()
self.connections_condition.release()
try:
self._pollLoop()
except:
self.log.exception("Exception in poll loop:")
def _pollLoop(self):
# Inner method of poll loop
self.log.debug("Preparing to poll")
poll = select.poll()
bitmask = (select.POLLIN | select.POLLERR |
select.POLLHUP | select.POLLNVAL)
# Reverse mapping of fd -> connection
conn_dict = {}
for conn in self.active_connections:
poll.register(conn.conn.fileno(), bitmask)
conn_dict[conn.conn.fileno()] = conn
# Register the wake pipe so that we can break if we need to
# reconfigure connections
poll.register(self.wake_read, bitmask)
while True:
self.log.debug("Polling %s connections" %
len(self.active_connections))
ret = poll.poll()
for fd, event in ret:
if fd == self.wake_read:
self.log.debug("Woken by pipe")
while True:
if os.read(self.wake_read, 1) == '\n':
break
return
if event & select.POLLIN:
self.log.debug("Processing input on %s" % conn)
p = conn_dict[fd].readPacket()
if p:
self.handlePacket(p)
else:
self.log.debug("Received no data on %s" % conn)
self._lostConnection(conn_dict[fd])
return
else:
self.log.debug("Received error event on %s" % conn)
self._lostConnection(conn_dict[fd])
return
def submitJob(self, job, background=False, precedence=PRECEDENCE_NORMAL):
"""Submit a job to a Gearman server.
Submits the provided job to the next server in this client's
round-robin connection pool.
If the job is a foreground job, updates will be made to the
supplied :py:class:`Job` object as they are received.
:arg Job job: The :py:class:`Job` to submit.
:arg bool background: Whether the job should be backgrounded.
:arg int precedence: Whether the job should have normal, low, or
high precedence. One of gear.PRECEDENCE_NORMAL,
gear.PRECEDENCE_LOW, gear.PRECEDENCE_HIGH
"""
data = '%s\x00%s\x00%s' % (job.name, job.unique, job.arguments)
if background:
if precedence == PRECEDENCE_NORMAL:
cmd = constants.SUBMIT_JOB_BG
elif precedence == PRECEDENCE_LOW:
cmd = constants.SUBMIT_JOB_LOW_BG
elif precedence == PRECEDENCE_HIGH:
cmd = constants.SUBMIT_JOB_HIGH_BG
else:
raise ConfigurationError("Invalid precedence value")
else:
if precedence == PRECEDENCE_NORMAL:
cmd = constants.SUBMIT_JOB
elif precedence == PRECEDENCE_LOW:
cmd = constants.SUBMIT_JOB_LOW
elif precedence == PRECEDENCE_HIGH:
cmd = constants.SUBMIT_JOB_HIGH
else:
raise ConfigurationError("Invalid precedence value")
p = Packet(constants.REQ, cmd, data)
while True:
conn = self.getConnection()
conn.pending_jobs.append(job)
try:
conn.sendPacket(p)
return
except:
self.log.exception("Exception while submitting job %s to %s" %
(job, conn))
conn.pending_jobs.remove(job)
# If we can't send the packet, discard the connection and
# try again
self._lostConnection(conn_dict[fd])
def handlePacket(self, packet):
"""Handle a packet received from a Gearman server.
This method is called whenever a packet is received from any
of this client's connections. It normally calls the handle
method appropriate for the specific packet.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
self.log.debug("Received packet %s" % packet)
if packet.ptype == constants.JOB_CREATED:
self.handleJobCreated(packet)
elif packet.ptype == constants.WORK_COMPLETE:
self.handleWorkComplete(packet)
def handleJobCreated(self, packet):
"""Handle a JOB_CREATED packet.
Updates the appropriate :py:class:`Job` with the newly
returned job handle.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.connection.pending_jobs.pop(0)
job.handle = packet.data
packet.connection.related_jobs[job.handle] = job
def handleWorkComplete(self, packet):
"""Handle a WORK_COMPLETE packet.
Updates the referenced :py:class:`Job` with the returned data
and removes it from the list of jobs associated with the
connection.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.getJob()
job.data += packet.getArgument(1)
job.complete = True
job.failure = False
del packet.connection.related_jobs[job.handle]
def handleWorkFail(self, packet):
"""Handle a WORK_FAIL packet.
Updates the referenced :py:class:`Job` with the returned data
and removes it from the list of jobs associated with the
connection.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.getJob()
job.complete = True
job.failure = True
del packet.connection.related_jobs[job.handle]
def handleWorkException(self, packet):
"""Handle a WORK_Exception packet.
Updates the referenced :py:class:`Job` with the returned data
and removes it from the list of jobs associated with the
connection.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.getJob()
job.exception = packet.getArgument(1)
job.complete = True
job.failure = True
del packet.connection.related_jobs[job.handle]
def handleWorkData(self, packet):
"""Handle a WORK_DATA packet.
Updates the referenced :py:class:`Job` with the returned data.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.getJob()
job.data += packet.getArgument(1)
def handleWorkWarning(self, packet):
"""Handle a WORK_WARNING packet.
Updates the referenced :py:class:`Job` with the returned data.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.getJob()
job.data += packet.getArgument(1)
job.warning = True
def handleWorkStatus(self, packet):
"""Handle a WORK_STATUS packet.
Updates the referenced :py:class:`Job` with the returned data.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.getJob()
job.numerator = packet.getArgument(1)
job.denominator = packet.getArgument(1)
try:
job.percent_complete = float(job.numerator)/float(job.denominator)
except:
job.percent_complete = None
def handleStatusRes(self, packet):
"""Handle a STATUS_RES packet.
Updates the referenced :py:class:`Job` with the returned data.
:arg Packet packet: The :py:class:`Packet` that was received.
"""
job = packet.getJob()
job.known = (packet.getArgument(1) == 1)
job.running = (packet.getArgument(2) == 1)
job.numerator = packet.getArgument(3)
job.denominator = packet.getArgument(4)
try:
job.percent_complete = float(job.numerator)/float(job.denominator)
except:
job.percent_complete = None
class Job(object):
log = logging.getLogger("gear.Job")
def __init__(self, name, arguments, unique):
self.name = name
self.arguments = arguments
self.unique = unique
self.handle = None
self.data = b''
self.exception = None
self.warning = False
self.complete = False
self.failure = False
self.numerator = None
self.denominator = None
self.percent_complete = None
self.known = None
self.running = None
def __repr__(self):
return '<gear.Job 0x%x handle: %s name: %s unique: %s>' % (
id(self), self.handle, self.name, self.unique)

58
gear/constants.py Normal file
View File

@ -0,0 +1,58 @@
# Copyright 2013 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
types = {
1: 'CAN_DO',
2: 'CANT_DO',
3: 'RESET_ABILITIES',
4: 'PRE_SLEEP',
#unused
6: 'NOOP',
7: 'SUBMIT_JOB',
8: 'JOB_CREATED',
9: 'GRAB_JOB',
10: 'NO_JOB',
11: 'JOB_ASSIGN',
12: 'WORK_STATUS',
13: 'WORK_COMPLETE',
14: 'WORK_FAIL',
15: 'GET_STATUS',
16: 'ECHO_REQ',
17: 'ECHO_RES',
18: 'SUBMIT_JOB_BG',
19: 'ERROR',
20: 'STATUS_RES',
21: 'SUBMIT_JOB_HIGH',
22: 'SET_CLIENT_ID',
23: 'CAN_DO_TIMEOUT',
24: 'ALL_YOURS',
25: 'WORK_EXCEPTION',
26: 'OPTION_REQ',
27: 'OPTION_RES',
28: 'WORK_DATA',
29: 'WORK_WARNING',
30: 'GRAB_JOB_UNIQ',
31: 'JOB_ASSIGN_UNIQ',
32: 'SUBMIT_JOB_HIGH_BG',
33: 'SUBMIT_JOB_LOW',
34: 'SUBMIT_JOB_LOW_BG',
35: 'SUBMIT_JOB_SCHED',
36: 'SUBMIT_JOB_EPOCH',
}
for i, name in types.items():
globals()[name]=i
REQ = '\x00REQ'
RES = '\x00RES'