Deploy to Render with yaml fix

Template Source

Review the code before running this template on your machine.

# Code for Render build script file
#
#
#
#
# These are the default steps that the script takes
BUILD_STEPS = [
    "#!/usr/bin/env bash\n\n",
    "# exit on error\n",
    "set -o errexit\n\n",
    "bundle install\n",
    "SECRET_KEY_BASE_DUMMY=1 bundle exec rails assets:precompile\n",
    "SECRET_KEY_BASE_DUMMY=1 bundle exec rails assets:clean\n",
    "bundle exec rails db:migrate"
  ]

# Render will look for this file in the application structure
BUILD_SCRIPT_FILE_PATH = "./bin/render-build.sh"

# Method for creating the build script file
def generate_build_script_file(build_script_path)
  File.open(build_script_path, "w") do |f|
    BUILD_STEPS.each do |step|
      f.write(step)
    end
  end
end

# Ask user if they want to overwrite the render-build.sh file
# if it already exists. If yes, overwrite the current file. Otherwise
# do nothing but ensure that the file is executable.
begin
  if File.exist?(BUILD_SCRIPT_FILE_PATH)
    if yes?("Detected bin/render-build, would like you to overwrite it? [y/n]")
      generate_build_script_file(BUILD_SCRIPT_FILE_PATH)
    end
  else
    generate_build_script_file(BUILD_SCRIPT_FILE_PATH)
  end
ensure
  # Make the render-build.sh file executable
  FileUtils.chmod("a+x", BUILD_SCRIPT_FILE_PATH)
end

# Code for Render yaml config file
#
#
#
#
# This sets up a render configuration hash that is later
# output to a file as yaml
RENDER_CONFIG = {
  "databases" => {
    "name" => "postgres",
    "databaseName" => "",
    "user" => "",
    "plan" => "free"
  },
  services: [{
    "type" => "web",
    "name" => "rails",
    "plan" => "free",
    "env" => "ruby",
    "buildCommand" => BUILD_SCRIPT_FILE_PATH,
    "startCommand" => "bundle exec rails s",
    "envVars" => [
      {
        "key" => "DATABASE_URL", 
        "fromDatabase" => { 
          "name" => "postgres", 
          "property" => "connectionString" 
        }
      },
      {
        "key" => "RAILS_MASTER_KEY",
        "sync" => false
      }, 
      {
        "key" => "WEB_CONCURRENCY",
        "value" => 2
      }
    ]
  }, 
  {
    "type" => "redis",
    "name" => "redis",
    "plan" => "free",
    "ipAllowList" => [],
    "maxmemoryPolicy" => "noeviction"
  }]
}

# Render will look for this file in the application structure
RENDER_YAML_FILE = "./render.yaml"

# Method for creating the Render configuration file
def generate_render_yaml_file(render_yaml_filename_str)
  File.open(render_yaml_filename_str, "w") do |f|
    YAML.dump(RENDER_CONFIG, f)
  end
end

# Here is where we output the above configuration
# as yaml to the "./render.yaml" file
if File.exist? RENDER_YAML_FILE
  if yes?("Detected render.yaml, would like you to overwrite it? [y/n]")
    generate_render_yaml_file(RENDER_YAML_FILE)
  end
else
  generate_render_yaml_file(RENDER_YAML_FILE)
end

# Code for modifying puma.rb file
#
#
#
#
# Uncomment the necessary lines inside ./config/puma.rb
File.open("./config/puma.rb", "r+") do |f|
  lines = f.readlines
  
  updated_puma_config = lines.map do |line| 
    line.sub!(/^# /, "").sub!("2", "4") if line.match?(/^# (workers|preload)/)
    line
  end
  
  f.rewind
  f.write(updated_puma_config.join)
end

say("****** Update databaseName and user in render.yaml ******")

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