class HelloWorldProcess(Process):
text = models.CharField(_('Message'), max_length=50)
approved = models.BooleanField(_('Approved'), default=False)
class Meta:
verbose_name = _("World Request")
verbose_name_plural = _('World Requests')
class HelloWorldFlow(Flow):
"""
Hello world
This process demonstrates hello world approval request flow.
"""
process_class = HelloWorldProcess
process_title = _('Hello world')
process_description = _(
'This process demonstrates hello world approval request flow.')
lock_impl = lock.select_for_update_lock
summary_template = _("'{{ process.text }}' message to the world")
start = (flow.Start(flow_views.CreateProcessView,
fields=['text'],
task_title=_('New message')).Permission(
auto_create=True).Next(this.approve))
approve = (flow.View(
flow_views.UpdateProcessView,
fields=['approved'],
task_title=_('Approve'),
task_description=_("{{ process.text }} approvement required"),
task_result_summary=_(
"Messsage was {{ process.approved|yesno:'Approved,Rejected' }}")).
Permission(auto_create=True).Next(this.check_approve))
check_approve = (flow.If(
cond=lambda act: act.process.approved,
task_title=_('Approvement check'),
).Then(this.send).Else(this.end))
send = (flow.Handler(
this.send_hello_world_request,
task_title=_('Send message'),
).Next(this.end))
end = flow.End(task_title=_('End'), )
def send_hello_world_request(self, activation):
with open(os.devnull, "w") as world:
world.write(activation.process.text)
class ResearchFlow(Flow):
process_class = ResearchProcess
process_title = _("Research Assistant Process")
process_description = _(
"This process helps researchers to find and analyze papers")
lock_impl = lock.select_for_update_lock
summary_template = ("Research: '{{ process.research.name }}'")
start = (flow.Start(views.StartView).Permission(auto_create=True).Next(
this.select_bases))
select_bases = (flow.View(
views.BasesView).Permission(auto_create=True).Next(this.search_params))
search_params = (flow.View(
views.SearchParams).Permission(auto_create=True).Next(this.approve))
approve = (flow.View(
flow_views.UpdateProcessView,
fields=['approved'],
task_title=('Approve'),
task_description=("Research {{ process.text }} approvement required"),
task_result_summary=(
"Messsage was {{ process.approved }}")).Permission(
auto_create=True).Next(this.check_approve))
check_approve = (flow.If(cond=lambda act: act.process.approved,
task_title=_('Approvement check')).Then(
this.get_metadata).Else(this.end))
get_metadata = (flow.Handler(this.get_papers_metadata,
task_title="Getting papers metadata").Next(
this.paper_review))
paper_review = (flow.View(views.paper_review).Permission(
auto_create=True).Next(this.check_papers_for_review))
check_papers_for_review = (flow.If(
cond=lambda act: len(act.process.research.papers.all()) == act.process.
research.papers_metadata_analized,
task_title=_('Approvement check'),
).Then(this.end).Else(this.paper_review))
end = flow.End(task_title=_('End'))
def get_papers_metadata(self, activation):
#import ipdb; ipdb.set_trace()
logger.info("Starting get metadata function")
research = activation.process.research
search_params = {
'search_string': research.search_params_string,
'date': research.search_params_date
}
papers = {}
try:
os.environ["SD_TOKEN"]
except KeyError:
print(
"Please set the environment variable SD_TOKEN as token for ScienceDirect API"
)
sys.exit(1)
token = os.environ["SD_TOKEN"]
search_bases = research.search_bases.iterator()
for base in search_bases:
if base.name == "ACM Digital Library":
logging.info("Getting ACM papers metadata")
acm_search = acm.Acm()
papers.update(acm_search.search(search_params))
elif base.name == "ScienceDirect":
logging.info("Getting ScienceDirect papers metadata")
sd_search = science_direct.ScienceDirect(token)
papers.update(sd_search.search(search_params))
for doi in papers.keys():
paper = papers[doi]
paper.save()
logging.info("Adding paper {}".format(paper.title))
research.papers.add(paper)
class Meta:
verbose_name = _("World Request")
verbose_name_plural = _('World Requests')
class Meta:
proxy = True
verbose_name = _("World Request")
verbose_name_plural = _('World Requests')