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refactor(event_handler): refactoring proxy events #8125

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Merged
leandrodamascena merged 3 commits into from
Apr 7, 2026
+15 −21
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refactor(event_handler): refactoring proxy events #8125

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2203397
chore: refactoring proxy events
leandrodamascena Apr 7, 2026
76a3a0c
Merge branch 'develop' into refactor/8120-dispatch-dict-proxy-event
leandrodamascena Apr 7, 2026
5c3b0ac
chore: refactoring proxy events
leandrodamascena Apr 7, 2026
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36 changes: 15 additions & 21 deletions aws_lambda_powertools/event_handler/api_gateway.py
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Original file line number Diff line number Diff line change
Expand Up @@ -113,6 +113,17 @@ class ProxyEventType(Enum):
LambdaFunctionUrlEvent = "LambdaFunctionUrlEvent"


_PROXY_EVENT_MAP: dict[Enum, tuple[type[BaseProxyEvent], str]] = {
ProxyEventType.APIGatewayProxyEvent: (APIGatewayProxyEvent, "API Gateway REST API"),
ProxyEventType.APIGatewayProxyEventV2: (APIGatewayProxyEventV2, "API Gateway HTTP API"),
ProxyEventType.BedrockAgentEvent: (BedrockAgentEvent, "Bedrock Agent"),
ProxyEventType.LambdaFunctionUrlEvent: (LambdaFunctionUrlEvent, "Lambda Function URL"),
ProxyEventType.VPCLatticeEvent: (VPCLatticeEvent, "VPC Lattice"),
ProxyEventType.VPCLatticeEventV2: (VPCLatticeEventV2, "VPC LatticeV2"),
ProxyEventType.ALBEvent: (ALBEvent, "ALB"),
}


class CORSConfig:
"""CORS Config

Expand Down Expand Up @@ -2498,28 +2509,11 @@ def _compile_regex(rule: str, base_regex: str = _ROUTE_REGEX):
rule_regex: str = re.sub(_DYNAMIC_ROUTE_PATTERN, _NAMED_GROUP_BOUNDARY_PATTERN, rule)
return re.compile(base_regex.format(rule_regex))

def _to_proxy_event(self, event: dict) -> BaseProxyEvent: # noqa: PLR0911 # ignore many returns
def _to_proxy_event(self, event: dict) -> BaseProxyEvent:
"""Convert the event dict to the corresponding data class"""
if self._proxy_type == ProxyEventType.APIGatewayProxyEvent:
logger.debug("Converting event to API Gateway REST API contract")
return APIGatewayProxyEvent(event, self._json_body_deserializer)
if self._proxy_type == ProxyEventType.APIGatewayProxyEventV2:
logger.debug("Converting event to API Gateway HTTP API contract")
return APIGatewayProxyEventV2(event, self._json_body_deserializer)
if self._proxy_type == ProxyEventType.BedrockAgentEvent:
logger.debug("Converting event to Bedrock Agent contract")
return BedrockAgentEvent(event, self._json_body_deserializer)
if self._proxy_type == ProxyEventType.LambdaFunctionUrlEvent:
logger.debug("Converting event to Lambda Function URL contract")
return LambdaFunctionUrlEvent(event, self._json_body_deserializer)
if self._proxy_type == ProxyEventType.VPCLatticeEvent:
logger.debug("Converting event to VPC Lattice contract")
return VPCLatticeEvent(event, self._json_body_deserializer)
if self._proxy_type == ProxyEventType.VPCLatticeEventV2:
logger.debug("Converting event to VPC LatticeV2 contract")
return VPCLatticeEventV2(event, self._json_body_deserializer)
logger.debug("Converting event to ALB contract")
return ALBEvent(event, self._json_body_deserializer)
event_class, label = _PROXY_EVENT_MAP.get(self._proxy_type, (ALBEvent, "ALB"))
logger.debug("Converting event to %s contract", label)
return event_class(event, self._json_body_deserializer)

def _resolve(self) -> ResponseBuilder:
"""Resolves the response or return the not found response"""
Expand Down
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