def _build_reply_templates():
"""
:return: Accept and Failure message templates
"""
accepted = CGraph()
failure = CGraph()
response_node = BNode()
agent_node = BNode()
accepted.add((response_node, RDF.type, STOA.Root))
accepted.add((response_node, RDF.type, STOA.Accepted))
accepted.add((agent_node, RDF.type, FOAF.Agent))
accepted.add((response_node, STOA.responseNumber, Literal("0", datatype=XSD.unsignedLong)))
accepted.add((response_node, STOA.submittedBy, agent_node))
accepted.add(
(agent_node, STOA.agentId, LIT_AGENT_ID))
accepted.bind('types', TYPES)
accepted.bind('stoa', STOA)
accepted.bind('foaf', FOAF)
for triple in accepted:
failure.add(triple)
failure.set((response_node, RDF.type, STOA.Failure))
for (prefix, ns) in accepted.namespaces():
failure.bind(prefix, ns)
return accepted, failure
def build_reply(template, reply_to, comment=None):
"""
:param template: A specific message template graph
:param reply_to: Recipient Agent UUID
:param comment: Optional comment
:return: The reply graph
"""
reply_graph = CGraph()
root_node = None
for (s, p, o) in template:
if o == STOA.Root:
root_node = s
else:
reply_graph.add((s, p, o))
reply_graph.add((root_node, STOA.responseTo, Literal(reply_to, datatype=TYPES.UUID)))
reply_graph.set((root_node, STOA.submittedOn, Literal(datetime.now())))
reply_graph.set((root_node, STOA.messageId, Literal(str(uuid.uuid4()), datatype=TYPES.UUID)))
if comment is not None:
reply_graph.set((root_node, RDFS.comment, Literal(comment, datatype=XSD.string)))
for (prefix, ns) in template.namespaces():
reply_graph.bind(prefix, ns)
return reply_graph
