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+====== Deadline Basic ======
+  * Deadline is a render manage application, it needs to install on all render client and all render slave and also the main deadline database server machine.
+  * Deadline needs all machine can access a common network shared drive, one for all project, one for its repo which holds all the config and setting and tools under Deadline.
+  * The "Deadline Repo" location is important,
+    * under its repo/, it has
+      * repo/api/python: for use python to control the whole deadline system and its network
+      * repo/settings: connection.ini contains all the server info, like IP address, database info
+  * There are several applications under it to form the Deadline system
+    * Deadline Monitor: the overview list app to view and submit job in one location
+      * Tool (check Super user mode) > Configure Repository Option > web service settings : shows it listening port for web RESTful api info
+====== Python Scripting for Deadline ======
+  * command in windows <code dos>
+cd "c:\Program Files\Thinkbox\Deadline10\bin"
+deadlinecommand.exe --version
+REM get job detail and put into text
+"D:\App\Deadline\bin\deadlinecommand.exe" -getjob 5cb6d7a04a99da2b84ad7cbe > d:\zTmp\result.txt
+REM get slave names of a pool, return a list of slave machine names
+"D:\App\Deadline\bin\deadlinecommand.exe" -getslavenamesinpool movie_nuke Assigned
+REM job list
+"D:\App\Deadline\bin\deadlinecommand.exe" -getjobsfilter username=tester
+</code>
+  * Python can be used for commanding the Deadline system, also can be used to Post-render/Pre-render script for triggering under render job events
+====== Get Submission Info ======
+  * mel process (SubmitMayaToDeadline.mel)
+    - submit job label (9163 line) > SetupSubmission()
+    - submit job label (next to Pipeline tool) @ 10743 > DeadlineSubmitterOnOk() > SetupSubmission()
+  * for commandline
+<code python>
+# get deadline cmd exe path
+dl_cmd = os.path.normpath( os.path.join(os.environ['DEADLINE_PATH'], 'deadlinecommand.exe') )
+# use deadline cmd to get deadline system info
+cmd = r'"{0}" -JSON -GetSubmissionInfo Pools Groups MaxPriority TaskLimit UserHomeDir RepoDir:submission/Maya/Main RepoDir:submission/Integration/Main'.format(dl_cmd)
+# note: the original mel code, put " 2> nul" at the end of the cmd, which means no err output, and only 1st output/the result to the string.
+# so they don't need 2 variable like bellow to catch the return values.
+info=subprocess.Popen(cmd,stdout=subprocess.PIPE, stdin=subprocess.PIPE, stderr=subprocess.PIPE)
+out, err = info.communicate()
+exitcode = info.returncode
+# read data
+import json
+dl_data = json.loads(out)
+deadlineSubmissionInfo=dl_data['result']
+# pool list
+pool_list = deadlineSubmissionInfo['Pools']
+</code>
+  * for existing maya deadline scene, the attribute is stored at defaultRenderGlobals <code python>
+# for existing deadline scene
+cmds.getAttr('defaultRenderGlobals.DeadlineMayaRepoPath')
+# all the attribute saving is at SavePersistentDeadlineOptions() in mel
+</code>
+  * other maya info <code python>
+# current renderer
+renderer = cmds.getAttr('defaultRenderGlobals.currentRenderer') # arnold
+# current render layer
+currentRenderLayer = cmds.editRenderLayerGlobals(q=1, currentRenderLayer=1)
+# render animation?
+render_animation = cmds.getAttr("defaultRenderGlobals.animation") # true
+# Get frame list 1-3 style
+frameList = str( int(cmds.currentTime(q=1)) )
+if render_animation:
+    fromFrame = int( cmds.getAttr('defaultRenderGlobals.startFrame') )
+    toFrame = int( cmds.getAttr('defaultRenderGlobals.endFrame') )
+    byFrame = int( cmds.getAttr('defaultRenderGlobals.byFrameStep') )
+    frameList = fromFrame
+    if fromFrame != toFrame:
+        frameList = "{0}-{1}".format(frameList, toFrame)
+        if byFrame > 1:
+            frameList = "{0}x{1}".format(frameList, byFrame)
+</code>