AWS API Gateway Lambda错误正则表达式 [英] AWS API Gateway Lambda Error Regex

问题描述

我有用Python 2.7编写的Lambda函数，该函数是从API网关触发的，

I have Lambda function written in Python 2.7 which is triggered from API Gateway,

我希望当Lambda失败并且我不想使用Lambda代理时，API网关返回400个代码，所以我试图设置API网关集成响应.

I want API Gateway to return 400 code when Lambda fails and I don't want to use Lambda Proxy so I'm trying to set API Gateway Integration Response.

Lambda函数失败时，它将返回:

When Lambda function fails it returns:

{
    "stackTrace": [
        [
            "/var/task/lambda_function.py",
            12,
            "lambda_handler",
            "raise Exception('failure')"
        ]
    ],
    "errorType": "Exception",
    "errorMessage": "failure"
}

Lambda错误正则表达式和主体映射模板:

Lambda Error Regex and Body Mapping template:

..与CLI相同:

aws apigateway get-integration-response --rest-api-id bz47krygwa --resource-id 788q0w --http-method ANY --status-code 400 --region us-west-1
{
    "statusCode": "400",
    "selectionPattern": ".*\"failure\".*",
    "responseTemplates": {
        "application/json": "#set($inputRoot = $input.path('$.errorMessage'))\n$inputRoot"
    }
}

..但是它不能正常工作，仍然返回200个代码:

..but it doesn't work correctly and still returns 200 code:

请提供任何修复建议?

推荐答案

答案很简单-从Lambda错误正则表达式中删除双引号就可以了，

Answer turned out to be very simple - removing double quotes from Lambda Error Regex did the trick,

此外，人体贴图"模板也可以删除:

moreover Body Mapping template could also be removed:

..并且按预期工作:

..and it works as expected:

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