ECS task change - arrays

Question

I am trying to check the last status of an ECS task, if it is STOPPED then it has to trigger lambda using cloudwatch event. I am getting below error message while validating the JSON event.
Error message:
Event pattern contains invalid element (can only be Strings enclosed in quotes, numbers, and the unquoted keywords true, false, and null)
**Code**:
{
"source": [
"aws.ecs"
],
"detail-type": [
"ECS Task State Change"
],
"detail": {
"clusterArn": [
"arn:aws:ecs:us-west-2:17025:cluster/ecs-w2"
],
"lastStatus": [
"STOPPED"
],
"overrides": {
"containerOverrides":
{
"environment":
{
"name": ["job_grp_nm"],
"value": ["QA_INTEGRATION"]
},
{
"name": ["secrets_targetdb"],
"value": ["7034908/Snowflake/facilitiesNDI/QA"]
},
"name": ["suite-dev"]
}
}
}
}
Please let me know what's wrong with the code.

Answer 1

There are two things wrong:
The values should be expressed as array of string, e.g. ["value"]
Your environment can be an array of objects.
So it should be:
{
"source": [
"aws.ecs"
],
"detail-type": [
"ECS Task State Change"
],
"detail": {
"clusterArn": [
"arn:aws:ecs:us-west-2:17025:cluster/ecs-w2"
],
"lastStatus": [
"STOPPED"
],
"overrides": {
"containerOverrides":
{
"environment":
{
"name": ["job_grp_nm"],
"value": ["QA_INTEGRATION"]
},
"name": ["suite-dev"]
}
}
}
}
The above should be accepted, but I can't verify if this will correctly match your event.