Which mode is best for a special configuration file, specifically logstash

Question

I'm using logstash and its configuration file (documented here) looks like this:

input {
  file {
    path => "/some/path/to/file"
    option => 1
  }
}
filter {
  if [var] == "string" {
    action {
      array_option => [ "val1", "val2", "val3" ]
      object_option => {
        str_option => "string"
      }
    }
  }
}
# this is a comment
output {
  stdout
}

I'm looking for a helpful emacs mode that works well with files like this. The conf-mode does good highlighting, but I can't get it to indent properly. Any suggestions?

Answer 1

Although ruby-mode works pretty well, there were some problems. After trying several other modes, I found this json-mode to work perfectly.

Answer 2

Technically it's a custom grammar: https://stackoverflow.com/questions/21442715/what-is-the-format-of-logstash-config-file

This is supposed to be just for logstash configs: https://github.com/Wilfred/logstash-conf.el

I came across this answer looking for something for Atom. Nothing exists as far as I can tell, but similarly the Ruby and JSON modes in Atom do an OK job of highlighting and indenting (auto-indent also works).