"""Credential request message handler."""
from .....indy.issuer import IndyIssuerError
from .....ledger.error import LedgerError
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_problem_report import ProblemReportReason
from ..messages.credential_request import CredentialRequest
[docs]class CredentialRequestHandler(BaseHandler):
"""Message handler class for credential requests."""
[docs] async def handle(self, context: RequestContext, responder: BaseResponder):
"""
Message handler logic for credential requests.
Args:
context: request context
responder: responder callback
"""
r_time = get_timer()
self._logger.debug("CredentialRequestHandler called with context %s", context)
assert isinstance(context.message, CredentialRequest)
self._logger.info(
"Received credential request message: %s",
context.message.serialize(as_string=True),
)
if not context.connection_ready:
raise HandlerException("No connection established for credential request")
credential_manager = CredentialManager(context.profile)
cred_ex_record = await credential_manager.receive_request(
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="CredentialRequestHandler.handle.END",
perf_counter=r_time,
)
# If auto_issue is enabled, respond immediately
if cred_ex_record.auto_issue:
if (
cred_ex_record.credential_proposal_dict
and cred_ex_record.credential_proposal_dict.credential_proposal
):
credential_issue_message = None
try:
(
cred_ex_record,
credential_issue_message,
) = await credential_manager.issue_credential(
cred_ex_record=cred_ex_record,
comment=context.message.comment,
)
await responder.send_reply(credential_issue_message)
except (
BaseModelError,
CredentialManagerError,
IndyIssuerError,
LedgerError,
StorageError,
) as err:
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( # them: be vague
problem_report_for_record(
cred_ex_record,
ProblemReportReason.ISSUANCE_ABANDONED.value,
)
)
trace_event(
context.settings,
credential_issue_message,
outcome="CredentialRequestHandler.issue.END",
perf_counter=r_time,
)
else:
self._logger.warning(
"Operation set for auto-issue but credential exchange record "
f"{cred_ex_record.credential_exchange_id} "
"has no attribute values"
)