Source code for luna_python_matcher.app.handlers.matcher_body_handler

""" Matcher handler. """

from typing import Type

from sanic.response import HTTPResponse
from vlutils.descriptors.data import DescriptorType

from app.handlers.base_handler import BaseMatcherHandler
from app_common.handlers.schemas import BodyMatch
from classes import enums
from classes.candidate_batch import CandidateBatch
from classes.enums import MatchSource
from classes.filters import EventFilters, FaceFilters
from classes.match_processing import MatchLPMProcessor
from classes.python_matcher_match_tools import EventsDBFaceTool, PythonMatcherMatchTool
from crutches_on_wheels.cow.web.query_getters import uuidGetter

CANDIDATE_FILTERS_MAP = {MatchSource.faces.value: FaceFilters, MatchSource.events.value: EventFilters}


class BodyMatcherHandler(BaseMatcherHandler):
    """
    Matcher handler allows to submit tasks to a service that searches for bodies similar to a given reference by
    matching them.

    Resource: "/{api_version}/matcher/bodies"
    """

    @staticmethod
    def getPythonMatcherMatchTool(candidateBatch: CandidateBatch) -> Type[PythonMatcherMatchTool]:
        """
        Get match tool.

        Args:
            candidateBatch: prepared candidate batch from request, not suitable for matcher match tool
        Returns:
            matchTool - faces db / events db match tool
        """
        if candidateBatch.origin == enums.MatchSource.events:
            return EventsDBFaceTool
        else:
            raise NotImplementedError(f"Cannot work with '{candidateBatch.origin}' as candidate.")

    async def post(self) -> HTTPResponse:
        """
        Match events or raw descriptors by bodies. See `spec_matcher`_.

        .. _spec_matcher:
            _static/api.html#operation/matching

        Returns:
            response with matching results
        """
        inputJson: dict = self.request.json
        self.validateMatchJson(inputJson, fastjsonSchema=BodyMatch.schema)

        accountId = self.getQueryParam("account_id", uuidGetter)

        candidates, references = await self.getMatchStructuresFromRequest(
            inputJson=inputJson,
            accountId=accountId,
            descriptorVersion=self.config.defaultHumanDescriptorVersion,
            descriptorType=DescriptorType.body,
        )

        matching = MatchLPMProcessor(
            eventsDBContext=self.eventsDBContext,
            facesDBContext=self.facesDBContext,
            attributesDBContext=self.attributesDBContext,
            candidates=candidates,
            references=references,
            accountId=accountId,
            storageTime=self.config.storageTime,
            requestId=self.request.requestId,
        )
        matchResults = await matching.match()

        return self.success(200, outputJson=matchResults)