Question 95659 in Amazon Web Sevices Question posted in
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How do i pass a string as payload to aws lambda function using aws cli? – Amazon web services

I am trying to use the below aws cli command to invoke the lambda function.

aws lambda invoke  --invocation-type RequestResponse  --function-name HelloWorldJava  --payload "world" outputfile.txt

But Iam getting below error.

Invalid base64: ""world""

The book I am referring to is using the same method.

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3

Answers


  1. 0

    You need to pass payload as a json-string – https://docs.aws.amazon.com/cli/latest/reference/lambda/invoke.html#examples

    –payload (blob)

    The JSON that you want to provide to your Lambda function as input.

    You can enter the JSON directly. For example, –payload ‘{ "key":
    "value" }’ . You can also specify a file path. For example, –payload
    file://payload.json .

    aws lambda invoke 
    --function-name my-function 
    --payload '{ "name": "Bob" }' 
    response.json
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  2. 0

    Your payload has to be JSON according to the docs, but I think there is no hard requirement for that. When you want to pass in a string value directly (JSON or otherwise) you also need to be sure that you pass --cli-binary-format raw-in-base64-out.

    So you command should be:

    aws lambda invoke  --invocation-type RequestResponse  --function-name HelloWorldJava --cli-binary-format raw-in-base64-out --payload "world" outputfile.txt
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  3. 0

    Configurations

    • Mac OS
    • VS code

    Error

    --payload (blob)

    The JSON that you want to provide to your Lambda function as input.

    You can enter the JSON directly. For example, --payload '{ "key": "value" }' . You can also specify a file path. For example, --payload file://payload.json .

    source

    Correction

    you need to clarify with this command:

    --cli-binary-format raw-in-base64-out

    Method

    Run this code

    aws lambda invoke 
> --invocation-type RequestResponse 
> --function-name HelloWorldJava 
> --cli-binary-format raw-in-base64-out 
> --payload "world" outputfile.txt

    Run your code again

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