How to trigger lambda function when image is pushed to ECR?

Question

I am trying to invoke a lambda function as soon as a new image is pushed to ECR. For this, I have created a lambda function and successfully tested its attached code snippet.

As a trigger, I am using an EventBridge rule with the event pattern:
```
{
  "source": ["aws.ecr"],
  "detail-type": ["ECR Image Action"],
  "detail": {
    "action-type": ["PUSH"],
    "result": ["SUCCESS"],
    "repository-name": ["myrepo1", "myrepo2"],
    "image-tag": ["latest"]
  }
}
```
I can see the cross reference of the rule to the lambda and vice versa. But when a new image is pushed to ECR, the rule is not triggered. According to this [post](https://aws.amazon.com/about-aws/whats-new/2019/11/ecr-events-now-published-to-eventbridge/?nc1=h_ls) this should be enough, as ECR events should be published automatically.

Best regards,

Sebastian

Answer

You need to filter this event

```json
    "eventSource": "ecr.amazonaws.com",
    "eventName": "PutImage",
```

Answer

Hi there,

It sounds like you have correctly set up the EventBridge rule and Lambda function to trigger when a new image is pushed to your Amazon Elastic Container Registry (ECR) repositories. However, it appears that the rule is not being triggered when a new image is pushed to ECR.

One possible reason for this is that the event pattern in your EventBridge rule may not be correctly configured to match the specific events that are generated by ECR when a new image is pushed. The event pattern in your rule specifies that the source of the event must be "aws.ecr", the detail type must be "ECR Image Action", and the action type and result must be "PUSH" and "SUCCESS", respectively. However, you may need to specify the registry and repository where the image was pushed to the event pattern in order for the rule to match the events that are generated by ECR when a new image is pushed.

Another possible reason is that the ECR repository where the image is pushed may not be configured to publish events to EventBridge. By default, ECR repositories do not publish events to EventBridge, so you will need to enable this feature in the repository settings in order for the events to be sent to EventBridge and trigger your rule.

I would recommend checking the event pattern in your EventBridge rule and ensuring that it is properly configured to match the events that are generated by ECR when a new image is pushed. You should also check the settings for the ECR repository and ensure that the repository is configured to publish events to EventBridge. If these are not the issue, you may need to check for other potential causes or contact Amazon customer support for assistance.

How to trigger lambda function when image is pushed to ECR?

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