basic poc w/ loki

.env

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+RAILS_ENV=development

.gitattributes

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+# See https://git-scm.com/docs/gitattributes for more about git attribute files.
+
+# Mark the database schema as having been generated.
+db/schema.rb linguist-generated
+
+# Mark any vendored files as having been vendored.
+vendor/* linguist-vendored

.gitignore

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+# See https://help.github.com/articles/ignoring-files for more about ignoring files.
+#
+# If you find yourself ignoring temporary files generated by your text editor
+# or operating system, you probably want to add a global ignore instead:
+#   git config --global core.excludesfile '~/.gitignore_global'
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Ignore pidfiles, but keep the directory.
+/tmp/pids/*
+!/tmp/pids/
+!/tmp/pids/.keep
+
+# Ignore uploaded files in development.
+/storage/*
+!/storage/.keep
+/tmp/storage/*
+!/tmp/storage/
+!/tmp/storage/.keep
+
+# Ignore master key for decrypting credentials and more.
+/config/master.key

.ruby-version

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+ruby-3.2.2

Caddyfile

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+:80 {
+#   tls {
+#     dns cloudflare
+#   }
+  reverse_proxy rails_app:3000
+}
+
+:443 {
+  tls {
+    dns cloudflare
+  }
+  reverse_proxy rails_app:3000
+}
+

Caddyfile.dev

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+{
+  auto_https disable_redirects
+  debug
+}
+
+:80 {
+  reverse_proxy rails_app:3000
+  log {
+    level DEBUG
+  }
+}

Dockerfile

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+# === Base Stage ===
+FROM ruby:3.2-alpine AS base
+WORKDIR /app
+RUN apk add --no-cache build-base postgresql-dev tzdata
+
+# === Dependencies Stage ===
+FROM base AS deps
+COPY Gemfile Gemfile.lock ./
+RUN bundle install --jobs 4 --retry 3
+
+# === Development Stage ===
+FROM deps AS dev
+COPY . .
+CMD ["rails", "server", "-b", "0.0.0.0"]
+
+# === Staging Stage ===
+FROM deps AS stg
+COPY . .
+RUN RAILS_ENV=staging bundle exec rake assets:precompile
+CMD ["rails", "server", "-e", "staging", "-b", "0.0.0.0"]
+
+# === Production Stage ===
+FROM deps AS prod
+COPY . .
+RUN RAILS_ENV=production bundle exec rake assets:precompile
+CMD ["rails", "server", "-e", "production", "-b", "0.0.0.0"]

Gemfile

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+source "https://rubygems.org"
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
+ruby "3.2.2"
+
+# Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
+gem "rails", "~> 7.0.8"
+
+# Use postgresql as the database for Active Record
+gem "pg", "~> 1.1"
+
+# Use the Puma web server [https://github.com/puma/puma]
+gem "puma", "~> 5.0"
+
+# Build JSON APIs with ease [https://github.com/rails/jbuilder]
+gem "jbuilder"
+
+# Use Redis adapter to run Action Cable in production
+gem "redis", "~> 4.0"
+
+# Use Kredis to get higher-level data types in Redis [https://github.com/rails/kredis]
+# gem "kredis"
+
+# Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
+# gem "bcrypt", "~> 3.1.7"
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem "tzinfo-data", platforms: %i[ mingw mswin x64_mingw jruby ]
+
+# Reduces boot times through caching; required in config/boot.rb
+gem "bootsnap", require: false
+
+# Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
+# gem "image_processing", "~> 1.2"
+
+# Use Rack CORS for handling Cross-Origin Resource Sharing (CORS), making cross-origin AJAX possible
+gem "rack-cors"
+
+# add ´prometheus_exporter´ gem
+gem 'prometheus-client'
+# strucutre logs
+gem 'lograge'
+
+group :development, :test do
+  # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
+  gem "debug", platforms: %i[ mri mingw x64_mingw ]
+end
+
+group :development do
+  # Speed up commands on slow machines / big apps [https://github.com/rails/spring]
+  # gem "spring"
+end
+

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    actioncable (7.0.8)
+      actionpack (= 7.0.8)
+      activesupport (= 7.0.8)
+      nio4r (~> 2.0)
+      websocket-driver (>= 0.6.1)
+    actionmailbox (7.0.8)
+      actionpack (= 7.0.8)
+      activejob (= 7.0.8)
+      activerecord (= 7.0.8)
+      activestorage (= 7.0.8)
+      activesupport (= 7.0.8)
+      mail (>= 2.7.1)
+      net-imap
+      net-pop
+      net-smtp
+    actionmailer (7.0.8)
+      actionpack (= 7.0.8)
+      actionview (= 7.0.8)
+      activejob (= 7.0.8)
+      activesupport (= 7.0.8)
+      mail (~> 2.5, >= 2.5.4)
+      net-imap
+      net-pop
+      net-smtp
+      rails-dom-testing (~> 2.0)
+    actionpack (7.0.8)
+      actionview (= 7.0.8)
+      activesupport (= 7.0.8)
+      rack (~> 2.0, >= 2.2.4)
+      rack-test (>= 0.6.3)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.0, >= 1.2.0)
+    actiontext (7.0.8)
+      actionpack (= 7.0.8)
+      activerecord (= 7.0.8)
+      activestorage (= 7.0.8)
+      activesupport (= 7.0.8)
+      globalid (>= 0.6.0)
+      nokogiri (>= 1.8.5)
+    actionview (7.0.8)
+      activesupport (= 7.0.8)
+      builder (~> 3.1)
+      erubi (~> 1.4)
+      rails-dom-testing (~> 2.0)
+      rails-html-sanitizer (~> 1.1, >= 1.2.0)
+    activejob (7.0.8)
+      activesupport (= 7.0.8)
+      globalid (>= 0.3.6)
+    activemodel (7.0.8)
+      activesupport (= 7.0.8)
+    activerecord (7.0.8)
+      activemodel (= 7.0.8)
+      activesupport (= 7.0.8)
+    activestorage (7.0.8)
+      actionpack (= 7.0.8)
+      activejob (= 7.0.8)
+      activerecord (= 7.0.8)
+      activesupport (= 7.0.8)
+      marcel (~> 1.0)
+      mini_mime (>= 1.1.0)
+    activesupport (7.0.8)
+      concurrent-ruby (~> 1.0, >= 1.0.2)
+      i18n (>= 1.6, < 2)
+      minitest (>= 5.1)
+      tzinfo (~> 2.0)
+    bootsnap (1.16.0)
+      msgpack (~> 1.2)
+    builder (3.2.4)
+    concurrent-ruby (1.2.2)
+    crass (1.0.6)
+    date (3.3.3)
+    debug (1.8.0)
+      irb (>= 1.5.0)
+      reline (>= 0.3.1)
+    erubi (1.12.0)
+    globalid (1.2.1)
+      activesupport (>= 6.1)
+    i18n (1.14.1)
+      concurrent-ruby (~> 1.0)
+    io-console (0.6.0)
+    irb (1.8.1)
+      rdoc
+      reline (>= 0.3.8)
+    loofah (2.21.3)
+      crass (~> 1.0.2)
+      nokogiri (>= 1.12.0)
+    mail (2.8.1)
+      mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
+    marcel (1.0.2)
+    method_source (1.0.0)
+    mini_mime (1.1.5)
+    minitest (5.20.0)
+    msgpack (1.7.2)
+    net-imap (0.3.7)
+      date
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.2.1)
+      timeout
+    net-smtp (0.4.0)
+      net-protocol
+    nio4r (2.5.9)
+    nokogiri (1.15.4-x86_64-linux)
+      racc (~> 1.4)
+    pg (1.5.4)
+    psych (5.1.0)
+      stringio
+    puma (5.6.7)
+      nio4r (~> 2.0)
+    racc (1.7.1)
+    rack (2.2.8)
+    rack-test (2.1.0)
+      rack (>= 1.3)
+    rails (7.0.8)
+      actioncable (= 7.0.8)
+      actionmailbox (= 7.0.8)
+      actionmailer (= 7.0.8)
+      actionpack (= 7.0.8)
+      actiontext (= 7.0.8)
+      actionview (= 7.0.8)
+      activejob (= 7.0.8)
+      activemodel (= 7.0.8)
+      activerecord (= 7.0.8)
+      activestorage (= 7.0.8)
+      activesupport (= 7.0.8)
+      bundler (>= 1.15.0)
+      railties (= 7.0.8)
+    rails-dom-testing (2.2.0)
+      activesupport (>= 5.0.0)
+      minitest
+      nokogiri (>= 1.6)
+    rails-html-sanitizer (1.6.0)
+      loofah (~> 2.21)
+      nokogiri (~> 1.14)
+    railties (7.0.8)
+      actionpack (= 7.0.8)
+      activesupport (= 7.0.8)
+      method_source
+      rake (>= 12.2)
+      thor (~> 1.0)
+      zeitwerk (~> 2.5)
+    rake (13.0.6)
+    rdoc (6.5.0)
+      psych (>= 4.0.0)
+    reline (0.3.8)
+      io-console (~> 0.5)
+    stringio (3.0.8)
+    thor (1.2.2)
+    timeout (0.4.0)
+    tzinfo (2.0.6)
+      concurrent-ruby (~> 1.0)
+    websocket-driver (0.7.6)
+      websocket-extensions (>= 0.1.0)
+    websocket-extensions (0.1.5)
+    zeitwerk (2.6.12)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  bootsnap
+  debug
+  pg (~> 1.1)
+  puma (~> 5.0)
+  rails (~> 7.0.8)
+  tzinfo-data
+
+RUBY VERSION
+   ruby 3.2.2p53
+
+BUNDLED WITH
+   2.4.10

README.md

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+# README
+
+This README would normally document whatever steps are necessary to get the
+application up and running.
+
+Things you may want to cover:
+
+* Ruby version
+
+* System dependencies
+
+* Configuration
+
+* Database creation
+
+* Database initialization
+
+* How to run the test suite
+
+* Services (job queues, cache servers, search engines, etc.)
+
+* Deployment instructions
+
+* ...

Rakefile

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+# Add your own tasks in files placed in lib/tasks ending in .rake,
+# for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
+
+require_relative "config/application"
+
+Rails.application.load_tasks

app/channels/application_cable/channel.rb

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+module ApplicationCable
+  class Channel < ActionCable::Channel::Base
+  end
+end

app/channels/application_cable/connection.rb

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+module ApplicationCable
+  class Connection < ActionCable::Connection::Base
+  end
+end

app/controllers/application_controller.rb

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+class ApplicationController < ActionController::API
+end

app/jobs/application_job.rb

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+class ApplicationJob < ActiveJob::Base
+  # Automatically retry jobs that encountered a deadlock
+  # retry_on ActiveRecord::Deadlocked
+
+  # Most jobs are safe to ignore if the underlying records are no longer available
+  # discard_on ActiveJob::DeserializationError
+end

app/mailers/application_mailer.rb

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+class ApplicationMailer < ActionMailer::Base
+  default from: "[email protected]"
+  layout "mailer"
+end

app/models/application_record.rb

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+class ApplicationRecord < ActiveRecord::Base
+  primary_abstract_class
+end