Module mydata_did.patched_protocols.present_proof.v1_0.handlers.presentation_handler

Presentation message handler.

"""Presentation message handler."""
from aries_cloudagent.messaging.base_handler import (
    BaseHandler,
    BaseResponder,
    RequestContext,
)
from aries_cloudagent.utils.tracing import trace_event, get_timer
from mydata_did.patched_protocols.present_proof.v1_0.models.presentation_exchange import (
    V10PresentationExchange
)
from dexa_sdk.managers.ada_manager import V2ADAManager
from ..manager import PresentationManager
from ..messages.presentation import Presentation


class PresentationHandler(BaseHandler):
    """Message handler class for presentations."""

    async def handle(self, context: RequestContext, responder: BaseResponder):
        """
        Message handler logic for presentations.

        Args:
            context: request context
            responder: responder callback

        """
        r_time = get_timer()

        self._logger.debug("PresentationHandler called with context %s", context)
        assert isinstance(context.message, Presentation)
        self._logger.info(
            "Received presentation message: %s",
            context.message.serialize(as_string=True),
        )

        presentation_manager = PresentationManager(context)

        presentation_exchange_record: V10PresentationExchange = \
            await presentation_manager.receive_presentation()

        # Initialise ADA manager
        manager = V2ADAManager(context)

        # Process the decorator for data agreement accept message if available.
        await manager.process_decorator_with_da_accept_message(
            context.message._decorators,
            presentation_exchange_record,
            context.connection_record
        )

        r_time = trace_event(
            context.settings,
            context.message,
            outcome="PresentationHandler.handle.END",
            perf_counter=r_time,
        )

        if context.settings.get("debug.auto_verify_presentation"):
            await presentation_manager.verify_presentation(presentation_exchange_record)

            trace_event(
                context.settings,
                presentation_exchange_record,
                outcome="PresentationHandler.handle.VERIFY",
                perf_counter=r_time,
            )

Classes

class PresentationHandler

Message handler class for presentations.

Initialize a BaseHandler instance.

Expand source code

class PresentationHandler(BaseHandler):
    """Message handler class for presentations."""

    async def handle(self, context: RequestContext, responder: BaseResponder):
        """
        Message handler logic for presentations.

        Args:
            context: request context
            responder: responder callback

        """
        r_time = get_timer()

        self._logger.debug("PresentationHandler called with context %s", context)
        assert isinstance(context.message, Presentation)
        self._logger.info(
            "Received presentation message: %s",
            context.message.serialize(as_string=True),
        )

        presentation_manager = PresentationManager(context)

        presentation_exchange_record: V10PresentationExchange = \
            await presentation_manager.receive_presentation()

        # Initialise ADA manager
        manager = V2ADAManager(context)

        # Process the decorator for data agreement accept message if available.
        await manager.process_decorator_with_da_accept_message(
            context.message._decorators,
            presentation_exchange_record,
            context.connection_record
        )

        r_time = trace_event(
            context.settings,
            context.message,
            outcome="PresentationHandler.handle.END",
            perf_counter=r_time,
        )

        if context.settings.get("debug.auto_verify_presentation"):
            await presentation_manager.verify_presentation(presentation_exchange_record)

            trace_event(
                context.settings,
                presentation_exchange_record,
                outcome="PresentationHandler.handle.VERIFY",
                perf_counter=r_time,
            )

Ancestors

• aries_cloudagent.messaging.base_handler.BaseHandler
• abc.ABC

Methods

async def handle(self, context: aries_cloudagent.messaging.request_context.RequestContext, responder: aries_cloudagent.messaging.responder.BaseResponder)

Message handler logic for presentations.

Args

context

request context

responder

responder callback

Expand source code

async def handle(self, context: RequestContext, responder: BaseResponder):
    """
    Message handler logic for presentations.

    Args:
        context: request context
        responder: responder callback

    """
    r_time = get_timer()

    self._logger.debug("PresentationHandler called with context %s", context)
    assert isinstance(context.message, Presentation)
    self._logger.info(
        "Received presentation message: %s",
        context.message.serialize(as_string=True),
    )

    presentation_manager = PresentationManager(context)

    presentation_exchange_record: V10PresentationExchange = \
        await presentation_manager.receive_presentation()

    # Initialise ADA manager
    manager = V2ADAManager(context)

    # Process the decorator for data agreement accept message if available.
    await manager.process_decorator_with_da_accept_message(
        context.message._decorators,
        presentation_exchange_record,
        context.connection_record
    )

    r_time = trace_event(
        context.settings,
        context.message,
        outcome="PresentationHandler.handle.END",
        perf_counter=r_time,
    )

    if context.settings.get("debug.auto_verify_presentation"):
        await presentation_manager.verify_presentation(presentation_exchange_record)

        trace_event(
            context.settings,
            presentation_exchange_record,
            outcome="PresentationHandler.handle.VERIFY",
            perf_counter=r_time,
        )