def do_dinit(self, args):
'''
Initialize DEJE interactivity.
This command must be used before any of the other d*
commands. It reads from a few of the values in variable
storage as initialization parameters:
* idcache - EJTP identity cache
* identity - location of EJTP identity in cache
* docname - Name of the document for network sync
* docserialized - serialized version of document
The dinit command can be run more than once, but it's
a bit of a reset, and may cause data loss in the
stateful parts of the protocol. But it's also the only
way to update the parameters used by the DEJE code -
for example, any changes to the 'idcache' variable after
initialization will have no effect.
'''
try:
params = self.get_vars(
'idcache',
'identity',
'docname',
'docserialized'
)
except KeyError as e:
self.fail('Need to set variable %r' % e.args[0])
cache = IdentityCache()
try:
cache.deserialize(params['idcache'])
except:
self.fail('Could not deserialize data in idcache')
try:
ident = cache.find_by_location(params['identity'])
except KeyError:
loc_string = strict(params['identity']).export()
self.fail('No identity in cache for ' + loc_string)
owner = Owner(ident)
owner.identities = cache
owner.client.rcv_callback = self.on_ejtp
self.write_json = owner.client.write_json
owner.client.write_json = self.write_json_wrapped
if type(params['docname']) != str:
json_str = strict(params['docname']).export()
self.fail('Not a valid docname: ' + json_str)
doc = Document(params['docname'], owner=owner)
try:
doc.deserialize(params['docserialized'])
except Exception as e:
self.fail('Failed to deserialize data:\n%r' % e)
doc.signals['enact-event'].connect(self.on_event)
doc.debug = self.debug
# Wait until everything that could fail has gone right
self.interface.owner = owner
self.interface.document = doc
self.output('DEJE initialized')
