Class: Kdep::Commands::Diff

Inherits:
Object
  • Object
show all
Defined in:
lib/kdep/commands/diff.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(global_options:, command_options:, args:) ⇒ Diff

Returns a new instance of Diff.



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# File 'lib/kdep/commands/diff.rb', line 14

def initialize(global_options:, command_options:, args:)
  @global_options = global_options
  @command_options = command_options
  @args = args
  @ui = Kdep::UI.new(color: false)
end

Class Method Details

.option_parser ⇒ Object 



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# File 'lib/kdep/commands/diff.rb', line 6

def self.option_parser
  OptionParser.new do |opts|
    opts.banner = "Usage: kdep diff [deploy] [env]"
    opts.separator ""
    opts.separator "Shows differences between rendered manifests and live cluster state."
  end
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/kdep/commands/diff.rb', line 21

def execute
  deploy_name = @args[0]
  env = @args[1]

  # Discover kdep/ directory
  discovery = Kdep::Discovery.new
  kdep_dir = discovery.find_kdep_dir

  unless kdep_dir
    @ui.error("No kdep/ directory found")
    exit 1
  end

  # Resolve deploy directory
  deploy_dir = resolve_deploy_dir(kdep_dir, deploy_name, discovery)
  unless deploy_dir
    exit 1
  end

  # Load config
  config = Kdep::Config.new(deploy_dir, env).load

  # Validate context before any cluster operation
  begin
    Kdep::ContextGuard.new(config["context"]).validate!
  rescue Kdep::Kubectl::Error => e
    @ui.error(e.message)
    exit 1
  end

  # Inject tag from state.yml if present (to_fix.md #1)
  if (state_tag = Kdep::State.tag(deploy_dir))
    config["tag"] = state_tag
  else
    @ui.warn("No state.yml in #{deploy_dir} -- diff will compare preset default tag against live cluster.")
  end

  # Render into a temp dir so we never clobber .rendered/ (owned by bump/render)
  require "tmpdir"
  Dir.mktmpdir("kdep-diff-") do |tmpdir|
    preset = Kdep::Preset.new(config["preset"], deploy_dir)
    writer = Kdep::Writer.new(tmpdir)
    renderer = Kdep::Renderer.new(config, deploy_dir)

    preset.resources.each_with_index do |resource_name, idx|
      begin
        content = renderer.render_resource(resource_name)
      rescue => e
        @ui.error("#{resource_name}: #{e.message}")
        next
      end
      writer.write(resource_name, content, idx + 1)
    end

    rendered_files = Dir.glob(File.join(tmpdir, "*.yml")).sort
    run_diff(rendered_files)
  end
end