Aws s3 在非临时文件的新文件上触发 lambda

Question

i want to launch a lambda for any new complete file, the process is quite simple:

1. i upload files to s3
2. for every new files in the directory I launch a lambda

unfortunately, i see that my lambdas invokes on _temporary/* files, which are files that are not fully uploaded to s3. what can i do?

thanks!

Answer 1

There is no concept of a "partially uploaded" file in Amazon S3. Either the whole object is created, or the object is not created. Nor does Amazon S3 have a concept of "temporary" or _temporary/ files. If they exist, it is because your application is uploading those files.

When creating an Amazon S3 event, you can specify a Prefix . The event will only be triggered for objects matching that prefix.

Alternatively, you could add a line of code at the start of the AWS Lambda function that checks the Key of the object and exits if it does not need to perform any actions on the object.