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

  # Load preset resources and render
  preset = Kdep::Preset.new(config["preset"], deploy_dir)
  resources = preset.resources

  repo_root = File.dirname(kdep_dir)
  output_dir = File.join(deploy_dir, ".rendered")

  writer = Kdep::Writer.new(output_dir)
  writer.clean
  renderer = Kdep::Renderer.new(config, deploy_dir)

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

  # Get sorted rendered files
  rendered_files = Dir.glob(File.join(output_dir, "*.yml")).sort

  if rendered_files.empty?
    @ui.info("No rendered files to diff")
    return
  end

  # Diff each file against live cluster state
  has_diffs = false
  errors = []

  rendered_files.each do |file_path|
    begin
      diff_output = Kdep::Kubectl.diff(file_path)
      if diff_output
        has_diffs = true
        @ui.info("--- #{File.basename(file_path)} ---")
        @ui.info(diff_output)
      end
    rescue Kdep::Kubectl::Error => e
      errors << { "file" => File.basename(file_path), "error" => e.message }
      @ui.error("#{File.basename(file_path)}: #{e.message}")
    end
  end

  unless has_diffs || errors.any?
    @ui.info("No changes -- cluster state matches rendered manifests.")
  end
end