unicorn Ruby/Rack server user+dev discussion/patches/pulls/bugs/help
 help / color / mirror / code / Atom feed
From: Cenon Del Rosario <cdelrosario@publishing.nine.com.au>
To: unicorn-public@yhbt.net
Subject: Formatting unicorn logs in json format for $stderr
Date: Tue, 6 Jul 2021 17:22:27 +1000	[thread overview]
Message-ID: <CAKZvEvJ2aYd=aZ-tY8JOUMTGbLJ2PDfMZULCFkJi9_7FdLeZ7A@mail.gmail.com> (raw)


I am using rails 3.2.22 / ruby 2.1.8 and am trying to reformat the
unicorn log output from stderr into json format and have had partial

I have a basic json formatter:
class JsonLogFormatter < Logger::Formatter
  def call(severity, datetime, progname, msg)
    log_msg = {
      time: "#{datetime}",
      severity: "#{severity}",
      source: "#{progname}"
    msg.is_a?(Hash) ? log_msg.merge!(msg) : log_msg.merge!(message: "#{msg}")

I have this in my unicorn config:
Logger.new($stderr).tap do |newlgr|
  newlgr.formatter = JsonLogFormatter.new

I have this in my application.rb:
Logger.new(STDOUT).tap do |logr|
  JsonLogFormatter.new.tap do |frmtr|
    logr.formatter = frmtr
    Rails.logger = config.logger = logr

For the most part it works and I get the stdout and stderr in json but
I also see some other non-json formatted messages, for example:
{"time":"2021-07-06 17:14:01
+1000","severity":"INFO","source":"","message":"Started GET \"/admin\"
for at 2021-07-06 17:14:01 +1000"} - - [06/Jul/2021 17:14:01] "GET /admin HTTP/1.1" 301 102 0.4243

It seems that rails logs are working and then the unicorn process
itself is outputting its own logs because I can see duplicates of the
same log message one in json and the other in plain text.

Just want to know if there is a way to get this working consistently?

Thank you,
Cenon Del Rosario

The information contained in this e-mail message and any accompanying files 
is or may be confidential. If you are not the intended recipient, any use, 
dissemination, reliance, forwarding, printing or copying of this e-mail or 
any attached files is unauthorised. This e-mail is subject to copyright. No 
part of it should be reproduced, adapted or communicated without the 
written consent of the copyright owner. If you have received this e-mail in 
error please advise the sender immediately by return e-mail or telephone 
and delete all copies. Nine Group does not guarantee the accuracy or 
completeness of any information contained in this e-mail or attached files. 
Internet communications are not secure, therefore Nine Group does not 
accept legal responsibility for the contents of this message or attached 

             reply	other threads:[~2021-07-06  7:23 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-06  7:22 Cenon Del Rosario [this message]
2021-07-06 10:41 ` Formatting unicorn logs in json format for $stderr Eric Wong
2021-07-06 23:21   ` Cenon Del Rosario
2021-07-06 23:38     ` Eric Wong
2021-07-07  0:04       ` Cenon Del Rosario
2021-07-07  0:16         ` Eric Wong
2021-07-07  7:01           ` Cenon Del Rosario

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

  List information: https://yhbt.net/unicorn/

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='CAKZvEvJ2aYd=aZ-tY8JOUMTGbLJ2PDfMZULCFkJi9_7FdLeZ7A@mail.gmail.com' \
    --to=cdelrosario@publishing.nine.com.au \
    --cc=unicorn-public@yhbt.net \


* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox


This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).