CODEWITHSUNDEEP
amazon-web-servicesamazon-cloudwatch
Karthik
Karthik

Reputation: 979

How to create JSON from AWS cloudwatch Input Transformer

Goal: I want to trigger notification to slack on any phase change in codebuild. I have a lambda that does for me and it expects a request as follows: 

{
"channel":"#XYZ",
"message":"TESTING <project_name> from <build-status> to <current-phase>"
}

So I try create a event from cloudwatch events and trigger my lambda:

So I try to use Input Transformer

In which the place holders are values of input path from cloudwatch

{
    "project_name": "$.detail.project-name",
    "current-phase": "$.detail.current-phase",
    "build-status": "$.detail.build-status",
}

But on adding this i get the error

There was an error while saving rule input_transformer_test. Details: InputTemplate for target Id64936775145825 contains placeholder within quotes..

What am i doing wrong here ?

Upvotes: 3

Views: 6989

Answers (2)

user6836723
user6836723

Reputation: 1

Since this is json, you dont need to put the values in quotes.

Only string notations needs to be put in quotes.

Upvotes: 0

Yong Tao
Yong Tao

Reputation: 346

<project_name>, <build-status>, <current-phase> needed to be passed as separate values. You cannot use them for string interpolation. [doc]

You will need to modify you lambda input format and construct your message inside the lambda function.

{
"channel":"#XYZ",
 "project_name": <project_name>,
 "current-phase": <current-phase>,
  "build-status": <build-status>
}

Upvotes: 4

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