blender/release/scripts/io/netrender/slave.py

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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
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#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
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#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# ##### END GPL LICENSE BLOCK #####
import sys, os, platform, shutil
import http, http.client, http.server, urllib
import subprocess, time
from netrender.utils import *
import netrender.model
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BLENDER_PATH = sys.argv[0]
CANCEL_POLL_SPEED = 2
MAX_TIMEOUT = 10
INCREMENT_TIMEOUT = 1
if platform.system() == 'Windows' and platform.version() >= '5': # Error mode is only available on Win2k or higher, that's version 5
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import ctypes
def SetErrorMode():
val = ctypes.windll.kernel32.SetErrorMode(0x0002)
ctypes.windll.kernel32.SetErrorMode(val | 0x0002)
return val
def RestoreErrorMode(val):
ctypes.windll.kernel32.SetErrorMode(val)
else:
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def SetErrorMode():
return 0
def RestoreErrorMode(val):
pass
def clearSlave(path):
shutil.rmtree(path)
def slave_Info():
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sysname, nodename, release, version, machine, processor = platform.uname()
slave = netrender.model.RenderSlave()
slave.name = nodename
slave.stats = sysname + " " + release + " " + machine + " " + processor
return slave
def testCancel(conn, job_id, frame_number):
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conn.request("HEAD", "/status", headers={"job-id":job_id, "job-frame": str(frame_number)})
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# cancelled if job isn't found anymore
if conn.getresponse().status == http.client.NO_CONTENT:
return True
else:
return False
def testFile(conn, job_id, slave_id, file_index, JOB_PREFIX, file_path, main_path = None):
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job_full_path = prefixPath(JOB_PREFIX, file_path, main_path)
if not os.path.exists(job_full_path):
temp_path = JOB_PREFIX + "slave.temp.blend"
conn.request("GET", fileURL(job_id, file_index), headers={"slave-id":slave_id})
response = conn.getresponse()
if response.status != http.client.OK:
return None # file for job not returned by server, need to return an error code to server
f = open(temp_path, "wb")
buf = response.read(1024)
while buf:
f.write(buf)
buf = response.read(1024)
f.close()
os.renames(temp_path, job_full_path)
return job_full_path
def render_slave(engine, netsettings, threads):
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timeout = 1
engine.update_stats("", "Network render node initiation")
conn = clientConnection(netsettings.server_address, netsettings.server_port)
if conn:
conn.request("POST", "/slave", repr(slave_Info().serialize()))
response = conn.getresponse()
slave_id = response.getheader("slave-id")
NODE_PREFIX = netsettings.path + "slave_" + slave_id + os.sep
if not os.path.exists(NODE_PREFIX):
os.mkdir(NODE_PREFIX)
while not engine.test_break():
conn.request("GET", "/job", headers={"slave-id":slave_id})
response = conn.getresponse()
if response.status == http.client.OK:
timeout = 1 # reset timeout on new job
job = netrender.model.RenderJob.materialize(eval(str(response.read(), encoding='utf8')))
JOB_PREFIX = NODE_PREFIX + "job_" + job.id + os.sep
if not os.path.exists(JOB_PREFIX):
os.mkdir(JOB_PREFIX)
if job.type == netrender.model.JOB_BLENDER:
job_path = job.files[0].filepath # path of main file
main_path, main_file = os.path.split(job_path)
job_full_path = testFile(conn, job.id, slave_id, 0, JOB_PREFIX, job_path)
print("Fullpath", job_full_path)
print("File:", main_file, "and %i other files" % (len(job.files) - 1,))
engine.update_stats("", "Render File "+ main_file+ " for job "+ job.id)
for rfile in job.files[1:]:
print("\t", rfile.filepath)
testFile(conn, job.id, slave_id, rfile.index, JOB_PREFIX, rfile.filepath, main_path)
# announce log to master
logfile = netrender.model.LogFile(job.id, slave_id, [frame.number for frame in job.frames])
conn.request("POST", "/log", bytes(repr(logfile.serialize()), encoding='utf8'))
response = conn.getresponse()
first_frame = job.frames[0].number
# start render
start_t = time.time()
if job.type == netrender.model.JOB_BLENDER:
frame_args = []
for frame in job.frames:
print("frame", frame.number)
frame_args += ["-f", str(frame.number)]
val = SetErrorMode()
process = subprocess.Popen([BLENDER_PATH, "-b", "-noaudio", job_full_path, "-t", str(threads), "-o", JOB_PREFIX + "######", "-E", "BLENDER_RENDER", "-F", "MULTILAYER"] + frame_args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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RestoreErrorMode(val)
elif job.type == netrender.model.JOB_PROCESS:
command = job.frames[0].command
val = SetErrorMode()
process = subprocess.Popen(command.split(" "), stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
RestoreErrorMode(val)
headers = {"slave-id":slave_id}
cancelled = False
stdout = bytes()
run_t = time.time()
while not cancelled and process.poll() == None:
stdout += process.stdout.read(1024)
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current_t = time.time()
cancelled = engine.test_break()
if current_t - run_t > CANCEL_POLL_SPEED:
# update logs if needed
if stdout:
# (only need to update on one frame, they are linked
conn.request("PUT", logURL(job.id, first_frame), stdout, headers=headers)
response = conn.getresponse()
stdout = bytes()
run_t = current_t
if testCancel(conn, job.id, first_frame):
cancelled = True
# read leftovers if needed
stdout += process.stdout.read()
if cancelled:
# kill process if needed
if process.poll() == None:
process.terminate()
continue # to next frame
total_t = time.time() - start_t
avg_t = total_t / len(job.frames)
status = process.returncode
print("status", status)
# flush the rest of the logs
if stdout:
# (only need to update on one frame, they are linked
conn.request("PUT", logURL(job.id, first_frame), stdout, headers=headers)
if conn.getresponse().status == http.client.NO_CONTENT:
continue
headers = {"job-id":job.id, "slave-id":slave_id, "job-time":str(avg_t)}
if status == 0: # non zero status is error
headers["job-result"] = str(DONE)
for frame in job.frames:
headers["job-frame"] = str(frame.number)
if job.type == netrender.model.JOB_BLENDER:
# send image back to server
filename = JOB_PREFIX + "%06d" % frame.number + ".exr"
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# thumbnail first
if netsettings.slave_thumb:
thumbname = thumbnail(filename)
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f = open(thumbname, 'rb')
conn.request("PUT", "/thumb", f, headers=headers)
f.close()
conn.getresponse()
f = open(filename, 'rb')
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conn.request("PUT", "/render", f, headers=headers)
f.close()
if conn.getresponse().status == http.client.NO_CONTENT:
continue
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elif job.type == netrender.model.JOB_PROCESS:
conn.request("PUT", "/render", headers=headers)
if conn.getresponse().status == http.client.NO_CONTENT:
continue
else:
headers["job-result"] = str(ERROR)
for frame in job.frames:
headers["job-frame"] = str(frame.number)
# send error result back to server
conn.request("PUT", "/render", headers=headers)
if conn.getresponse().status == http.client.NO_CONTENT:
continue
else:
if timeout < MAX_TIMEOUT:
timeout += INCREMENT_TIMEOUT
for i in range(timeout):
time.sleep(1)
if engine.test_break():
break
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conn.close()
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if netsettings.slave_clear:
clearSlave(NODE_PREFIX)
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if __name__ == "__main__":
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pass