Support multiline

[runningman84]

It would be great to be able to specify some kind of multiline regex

This is the alloy configuration to do this:

          // Process logs and apply multiline handling
          loki.process "multiline_processor" {
            forward_to = [loki.write.endpoint.receiver]

            stage.multiline {
              firstline = "^\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}\\.\\d{3}"  // Match timestamp lines
              max_wait_time = "3s"  // Wait up to 3 seconds for additional lines
            }
          }

[amorey]

Can you describe the use case a bit more? If you have multi-line statements in your logs and you want to view them as multiple lines in the UI you can choose the "wrap" option from the console log settings (gear icon above the logging window).