How to add path field to every document in an ElasticSearch index?

Question

While pushing logs from local to ES using file input plugin, a path field gets added which contains the actual path of the log file which the document was created from. But this field doesn't show up when using the AWS s3 input plugin. How do I add it?

My s3 input plugin:

s3 {
      "access_key_id" => "***"
      "secret_access_key" => "***"
      "backup_to_dir" => "/home/xyz/aws_s3_backup_data/"
      "bucket" => "bucket"
      "prefix" => "folder/dir/"
   }

Answer 1

看起来他们将其添加为[@metadata][s3][key] ，尽管它不在文档中。