POST JSON object to aws lambda

Question

How can I post a json object to aws lambda function through aws API gateway ?

p.s.- My goal is to write the lambda function in python and then post it to aws SQS.

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Answer 1

Yes you can,

If you trigger the Lambda function from API Gateway using the Lambda Proxy integration the request will call the function with a payload that looks like that below. As you can see all you need to do is parse the JSON body attribute.

  {
    "resource": /path",
    "path": "/path",
    "httpMethod": "PUT",
    "headers": {
      "Accept": "*/*",
      "Accept-Encoding": "gzip, deflate, sdch, br",
      "Accept-Language": "en-US,en;q=0.8,pl;q=0.6,en-GB;q=0.4",
      "Cache-Control": "no-cache",
      "CloudFront-Forwarded-Proto": "https",
      "CloudFront-Is-Desktop-Viewer": "true",
      "CloudFront-Is-Mobile-Viewer": "false",
      "CloudFront-Is-SmartTV-Viewer": "false",
      "CloudFront-Is-Tablet-Viewer": "false",
      "CloudFront-Viewer-Country": "PL",
      "Content-Type": "application/json",
      "DNT": "1",
      "Host": "api.stockflare.com",
      "Origin": "http://localhost:3000",
      "Pragma": "no-cache",
      "Referer": "http://localhost:3000/databank",
      "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
      "Via": "1.1 XXXXX.cloudfront.net (CloudFront)",
      "X-Amz-Cf-Id": "XXXXXX==",
      "X-Amzn-Trace-Id": "Root=XXXXXX",
      "X-Forwarded-For": "XXXXX",
      "X-Forwarded-Port": "443",
      "X-Forwarded-Proto": "https"
    },
    "queryStringParameters": null,
    "pathParameters": null,
    "stageVariables": null,
    "requestContext": {
      "path": "/path",
      "accountId": "XXXXX",
      "resourceId": "p0flbp",
      "stage": "v1",
      "requestId": "XXXXX",
      "identity": {
        "cognitoIdentityPoolId": null,
        "accountId": null,
        "cognitoIdentityId": null,
        "caller": null,
        "apiKey": "",
        "sourceIp": "XXXXXX",
        "accessKey": null,
        "cognitoAuthenticationType": null,
        "cognitoAuthenticationProvider": null,
        "userArn": null,
        "userAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/57.0.2987.133 Safari/537.36",
        "user": null
      },
      "resourcePath": "/path",
      "httpMethod": "PUT",
      "apiId": "XXXXXX"
    },
    "body": "{\"fields\":[\"forecast_pe\"],\"countries\":[\"_all\",\"amer\",\"apac\",\"emea\"],\"sectors\":[\"50\",\"51\"]}",
    "isBase64Encoded": false
  }