def fireTaskWorker(task_name,task_inputs_key):
print "Starting task request..."
# get job_package and burn it
job_package = pickle.loads(redisHandles.r_job_handle.get(task_inputs_key))
redisHandles.r_job_handle.delete(task_inputs_key)
# check if task in available tasks, else abort
try:
task_handle = getattr(actions, task_name)
except:
return utilities.applicationError("Task not found, or user not authorized to perform. Return to <a href='/userPage'>user page</a>.")
# get username from session (will pull from user auth session later)
username = session['username']
# get user-selectedd objects
stime = time.time()
userSelectedPIDs = models.user_pids.query.filter_by(username=username,status=True)
PIDlist = [PID.PID for PID in userSelectedPIDs]
etime = time.time()
ttime = (etime - stime) * 1000
print "Took this long to create list from SQL query",ttime,"ms"
# instantiate job number
''' pulling from incrementing redis counter, considering MySQL '''
job_num = jobs.jobStart()
# begin job and set estimated tasks
print "Antipcating",userSelectedPIDs.count(),"tasks...."
redisHandles.r_job_handle.set("job_{job_num}_est_count".format(job_num=job_num),userSelectedPIDs.count())
# augment job_package
job_package['job_num'] = job_num
# send to celeryTaskFactory in actions.py
'''
iterates through PIDs and creates secondary async tasks for each
passing username, task_name, and job_package containing all the update handles
'celery_task_id' below contains celery task key, that contains all eventual children objects
'''
celery_task_id = actions.celeryTaskFactory.delay(job_num=job_num,task_name=task_name,job_package=job_package,PIDlist=PIDlist)
# send job to user_jobs SQL table
db.session.add(models.user_jobs(job_num, username, celery_task_id, "init", task_name))
db.session.commit()
print "Started job #",job_num,"Celery task #",celery_task_id
return redirect("/userJobs")
def objPreview(PIDnum):
object_package = {}
# GET CURRENT OBJECTS
PIDlet = jobs.genPIDlet(int(PIDnum))
if PIDlet == False:
return utilities.applicationError("PIDnum is out of range or invalid. Object-at-a-Glance is displeased.")
PIDlet['pURL'] = "/objPreview/"+str(int(PIDnum)-1)
PIDlet['nURL'] = "/objPreview/"+str(int(PIDnum)+1)
# WSUDOR handle
obj_handle = WSUDOR_ContentTypes.WSUDOR_Object(PIDlet['cPID'])
# General Metadata
solr_params = {'q':utilities.escapeSolrArg(PIDlet['cPID']), 'rows':1}
solr_results = solr_handle.search(**solr_params)
solr_package = solr_results.documents[0]
object_package['solr_package'] = solr_package
# COMPONENTS
object_package['components_package'] = []
riquery = fedora_handle.risearch.spo_search(subject=None, predicate="info:fedora/fedora-system:def/relations-external#isMemberOf", object="info:fedora/"+PIDlet['cPID'])
for s,p,o in riquery:
object_package['components_package'].append(s.encode('utf-8'))
if len(object_package['components_package']) == 0:
object_package.pop('components_package')
# RDF RELATIONSHIPS
riquery = fedora_handle.risearch.spo_search(subject="info:fedora/"+PIDlet['cPID'], predicate=None, object=None)
# parse
riquery_filtered = []
for s,p,o in riquery:
riquery_filtered.append((p,o))
riquery_filtered.sort()
object_package['rdf_package'] = riquery_filtered
# DATASTREAMS
ds_list = obj_handle.ohandle.ds_list
object_package['datastream_package'] = ds_list
# Object size of datastreams
size_dict = obj_handle.objSizeDict
object_package['size_dict'] = size_dict
object_package['size_dict_json'] = json.dumps(size_dict)
# OAI
OAI_dict = {}
#identifer
try:
riquery = fedora_handle.risearch.spo_search(subject="info:fedora/"+PIDlet['cPID'], predicate="http://www.openarchives.org/OAI/2.0/itemID", object=None)
OAI_ID = riquery.objects().next().encode('utf-8')
OAI_dict['ID'] = OAI_ID
except:
print "No OAI Identifier found."
# sets
OAI_dict['sets'] = []
try:
riquery = fedora_handle.risearch.spo_search(subject="info:fedora/"+PIDlet['cPID'], predicate="http://digital.library.wayne.edu/fedora/objects/wayne:WSUDOR-Fedora-Relations/datastreams/RELATIONS/content/isMemberOfOAISet", object=None)
for each in riquery.objects():
OAI_dict['sets'].append(each)
except:
print "No OAI sets found."
object_package['OAI_package'] = OAI_dict
print object_package['OAI_package']
# RENDER
return render_template("objPreview.html",PIDnum=(int(PIDnum)+1),PIDlet=PIDlet,object_package=object_package,localConfig=localConfig)
