Class: Kamal::EnvFile

Inherits:
Object
  • Object
show all
Defined in:
lib/kamal/env_file.rb

Overview

Encode an env hash as a string where secret values have been looked up and all values escaped for Docker.

Instance Method Summary collapse

Constructor Details

#initialize(env) ⇒ EnvFile

Returns a new instance of EnvFile.



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# File 'lib/kamal/env_file.rb', line 3

def initialize(env)
  @env = env
end

Instance Method Details

#to_s ⇒ Object Also known as: to_str 



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# File 'lib/kamal/env_file.rb', line 7

def to_s
  env_file = StringIO.new.tap do |contents|
    if (secrets = @env["secret"]).present?
      @env.fetch("secret", @env)&.each do |key|
        contents << docker_env_file_line(key, ENV.fetch(key))
      end

      @env["clear"]&.each do |key, value|
        contents << docker_env_file_line(key, value)
      end
    else
      @env.fetch("clear", @env)&.each do |key, value|
        contents << docker_env_file_line(key, value)
      end
    end
  end.string

  # Ensure the file has some contents to avoid the SSHKIT empty file warning
  env_file.presence || "\n"
end