"""Credential issue message handler."""
from .....indy.holder import IndyHolderError
from .....messaging.base_handler import BaseHandler, HandlerException
from .....messaging.models.base import BaseModelError
from .....messaging.request_context import RequestContext
from .....messaging.responder import BaseResponder
from .....storage.error import StorageError
from .....utils.tracing import trace_event, get_timer
from .. import problem_report_for_record
from ..manager import CredentialManager, CredentialManagerError
from ..messages.credential_issue import CredentialIssue
from ..messages.credential_problem_report import ProblemReportReason
[docs]class CredentialIssueHandler(BaseHandler):
"""Message handler class for credential offers."""
[docs] async def handle(self, context: RequestContext, responder: BaseResponder):
"""
Message handler logic for credential offers.
Args:
context: request context
responder: responder callback
"""
r_time = get_timer()
self._logger.debug("CredentialHandler called with context %s", context)
assert isinstance(context.message, CredentialIssue)
self._logger.info(
"Received credential message: %s", context.message.serialize(as_string=True)
)
if not context.connection_ready:
raise HandlerException("No connection established for credential issue")
credential_manager = CredentialManager(context.profile)
cred_ex_record = await credential_manager.receive_credential(
context.message, context.connection_record.connection_id
) # mgr only finds, saves record: on exception, saving state null is hopeless
r_time = trace_event(
context.settings,
context.message,
outcome="CredentialIssueHandler.handle.END",
perf_counter=r_time,
)
# Automatically move to next state if flag is set
if context.settings.get("debug.auto_store_credential"):
try:
cred_ex_record = await credential_manager.store_credential(
cred_ex_record
)
except (
BaseModelError,
CredentialManagerError,
IndyHolderError,
StorageError,
) as err:
# treat failure to store as mangled on receipt hence protocol error
self._logger.exception(err)
if cred_ex_record:
async with context.session() as session:
await cred_ex_record.save_error_state(
session,
reason=err.roll_up, # us: be specific
)
await responder.send_reply(
problem_report_for_record(
cred_ex_record,
ProblemReportReason.ISSUANCE_ABANDONED.value, # them: vague
)
)
credential_ack_message = await credential_manager.send_credential_ack(
cred_ex_record
)
trace_event(
context.settings,
credential_ack_message,
outcome="CredentialIssueHandler.handle.STORE",
perf_counter=r_time,
)