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import sys, os, platform
import http, http.client, http.server, urllib
import subprocess, time
from netrender.utils import *
import netrender.model
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
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:
def SetErrorMode():
return 0
def RestoreErrorMode(val):
pass
def slave_Info():
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):
conn.request("HEAD", "/status", headers={"job-id":job_id, "job-frame": str(frame_number)})
response = conn.getresponse()
# cancelled if job isn't found anymore
if response.status == http.client.NO_CONTENT:
return True
else:
return False
def testFile(conn, job_id, slave_id, JOB_PREFIX, file_path, main_path = None):
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", "/file", headers={"job-id": job_id, "slave-id":slave_id, "job-file":file_path})
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, scene):
netsettings = scene.network_render
timeout = 1
engine.update_stats("", "Network render node initiation")
conn = clientConnection(scene)
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)
job_path = job.files[0][0] # data in files have format (path, start, end)
main_path, main_file = os.path.split(job_path)
job_full_path = testFile(conn, job.id, slave_id, 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 file_path, start, end in job.files[1:]:
print("\t", file_path)
testFile(conn, job.id, slave_id, JOB_PREFIX, file_path, main_path)
frame_args = []
for frame in job.frames:
print("frame", frame.number)
frame_args += ["-f", str(frame.number)]
# announce log to master
logfile = netrender.model.LogFile(job.id, [frame.number for frame in job.frames])
conn.request("POST", "/log", bytes(repr(logfile.serialize()), encoding='utf8'), headers={"slave-id":slave_id})
response = conn.getresponse()
first_frame = job.frames[0].number
# start render
start_t = time.time()
val = SetErrorMode()
process = subprocess.Popen([sys.argv[0], "-b", job_full_path, "-o", JOB_PREFIX + "######", "-E", "BLENDER_RENDER", "-F", "MULTILAYER"] + frame_args, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
RestoreErrorMode(val)
headers = {"job-id":job.id, "slave-id":slave_id}
cancelled = False
stdout = bytes()
run_t = time.time()
while process.poll() == None and not cancelled:
stdout += process.stdout.read(32)
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
headers["job-frame"] = str(first_frame)
conn.request("PUT", "/log", stdout, headers=headers)
response = conn.getresponse()
stdout = bytes()
run_t = current_t
if testCancel(conn, job.id, first_frame):
cancelled = True
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
headers["job-frame"] = str(first_frame)
conn.request("PUT", "/log", stdout, headers=headers)
response = conn.getresponse()
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)
# send result back to server
f = open(JOB_PREFIX + "%06d" % frame.number + ".exr", 'rb')
conn.request("PUT", "/render", f, headers=headers)
f.close()
response = conn.getresponse()
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)
response = conn.getresponse()
else:
if timeout < MAX_TIMEOUT:
timeout += INCREMENT_TIMEOUT
for i in range(timeout):
time.sleep(1)
if engine.test_break():
conn.close()
return
conn.close()
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