Class: KairosMcp::SkillSetManager

Inherits:
Object
  • Object
show all
Defined in:
lib/kairos_mcp/skillset_manager.rb

Overview

Manages SkillSet plugins in .kairos/skillsets/

Handles discovery, loading, dependency resolution, enable/disable state, and layer-aware governance (blockchain recording, RAG indexing).

Constant Summary collapse

SAFE_NAME_PATTERN = 
/\A[a-zA-Z0-9][a-zA-Z0-9_-]*\z/
MAX_NAME_LENGTH = 
64
CORE_SKILLSETS =

SkillSets with no external dependencies, safe for automatic installation. Others (multiuser, service_grant, hestia, mmp, skillset_exchange, mcp_client) require PostgreSQL or networking and must be installed explicitly.

%w[
  plugin_projector agent llm_client autoexec autonomos
  skillset_creator knowledge_creator introspection dream
  document_authoring synoptis
].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(skillsets_dir: nil) ⇒ SkillSetManager

Returns a new instance of SkillSetManager.



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# File 'lib/kairos_mcp/skillset_manager.rb', line 25

def initialize(skillsets_dir: nil)
  @skillsets_dir = skillsets_dir || KairosMcp.skillsets_dir
  @config_path = File.join(@skillsets_dir, 'config.yml')
  @config = load_config
end

Instance Attribute Details

#skillsets_dir ⇒ Object (readonly)

Returns the value of attribute skillsets_dir.



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# File 'lib/kairos_mcp/skillset_manager.rb', line 23

def skillsets_dir
  @skillsets_dir
end

Instance Method Details

#all_skillsets ⇒ Object

All discovered SkillSets (enabled and disabled)



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# File 'lib/kairos_mcp/skillset_manager.rb', line 32

def all_skillsets
  discover_skillsets
end

#available_skillsets ⇒ Array<Hash>

List all available SkillSets from gem templates with install status.

Returns:

  • (Array<Hash>) —

    list with name, version, description, installed status



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# File 'lib/kairos_mcp/skillset_manager.rb', line 250

def available_skillsets
  templates_dir = File.join(KairosMcp.gem_root, 'templates', 'skillsets')
  return [] unless File.directory?(templates_dir)

  installed_map = all_skillsets.each_with_object({}) { |ss, h| h[ss.name] = ss }

  Dir.children(templates_dir).sort.filter_map do |name|
    template_path = File.join(templates_dir, name)
    next unless File.directory?(template_path)

    template_ss = Skillset.new(template_path)
    next unless template_ss.valid?

    installed = installed_map[name]
    {
      name: name,
      available_version: template_ss.version,
      description: template_ss.description,
      installed: !installed.nil?,
      installed_version: installed&.version,
      enabled: installed ? enabled?(name) : false,
      upgrade_available: installed ? Gem::Version.new(template_ss.version) > Gem::Version.new(installed.version) : false
    }
  end
end

#check_installable_dependencies(skillset) ⇒ Hash

Check if a SkillSet’s dependencies can be satisfied locally. Returns a structured result (does NOT raise).

Parameters:

  • skillset (Skillset) —

    A Skillset object (from archive or installed)

Returns:

  • (Hash) —

    { satisfiable:, missing:, version_mismatch:, disabled: }



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# File 'lib/kairos_mcp/skillset_manager.rb', line 396

def check_installable_dependencies(skillset)
  result = { satisfiable: true, missing: [], version_mismatch: [], disabled: [] }
  skillset.depends_on_with_versions.each do |dep|
    installed = find_skillset(dep[:name])
    if installed.nil?
      result[:satisfiable] = false
      result[:missing] << dep[:name]
      next
    end

    unless enabled?(dep[:name])
      result[:disabled] << dep[:name]
    end

    next unless dep[:version]

    begin
      requirement = Gem::Requirement.new(*dep[:version].split(',').map(&:strip))
      unless requirement.satisfied_by?(Gem::Version.new(installed.version))
        result[:satisfiable] = false
        result[:version_mismatch] << {
          name: dep[:name],
          required: dep[:version],
          installed: installed.version
        }
      end
    rescue Gem::Requirement::BadRequirementError
      result[:satisfiable] = false
      result[:version_mismatch] << {
        name: dep[:name],
        required: dep[:version],
        installed: installed.version,
        error: 'invalid version constraint'
      }
    end
  end
  result
end

#disable(name) ⇒ Object

Disable a SkillSet

Raises:

  • (ArgumentError) 


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# File 'lib/kairos_mcp/skillset_manager.rb', line 63

def disable(name)
  skillset = find_skillset(name)
  raise ArgumentError, "SkillSet '#{name}' not found" unless skillset

  # L0 SkillSets require human approval to disable
  if skillset.layer == :L0
    return { success: false, error: "L0 SkillSet '#{name}' requires human approval to disable", requires_approval: true }
  end

  check_dependents!(name)

  set_config(name, 'enabled', false)
  record_skillset_event(skillset, 'disable')
  { success: true, name: name }
end

#enable(name) ⇒ Object

Enable a SkillSet

Raises:

  • (ArgumentError) 


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# File 'lib/kairos_mcp/skillset_manager.rb', line 51

def enable(name)
  skillset = find_skillset(name)
  raise ArgumentError, "SkillSet '#{name}' not found" unless skillset

  check_dependencies!(skillset)

  set_config(name, 'enabled', true)
  record_skillset_event(skillset, 'enable')
  { success: true, name: name, layer: skillset.layer }
end

#enabled?(name) ⇒ Boolean

Check if a SkillSet is enabled

Returns:

  • (Boolean) 


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# File 'lib/kairos_mcp/skillset_manager.rb', line 43

def enabled?(name)
  ss_config = @config.dig('skillsets', name.to_s)
  return true unless ss_config # Default: enabled if no explicit config

  ss_config['enabled'] != false
end

#enabled_skillsets ⇒ Object

Only enabled SkillSets, sorted by dependency order



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# File 'lib/kairos_mcp/skillset_manager.rb', line 37

def enabled_skillsets
  enabled = discover_skillsets.select { |ss| enabled?(ss.name) }
  sort_by_dependencies(enabled)
end

#find_skillset(name) ⇒ Object

Find a SkillSet by name



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# File 'lib/kairos_mcp/skillset_manager.rb', line 444

def find_skillset(name)
  all_skillsets.find { |ss| ss.name == name.to_s }
end

#info(name) ⇒ Object

Get info about a specific SkillSet



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# File 'lib/kairos_mcp/skillset_manager.rb', line 436

def info(name)
  skillset = find_skillset(name)
  return nil unless skillset

  skillset.to_h.merge(enabled: enabled?(name))
end

#install(source_path, layer_override: nil, force: false) ⇒ Object

Install a SkillSet from a local path. With force: true, replaces an existing SkillSet (preserves config/ files).

Raises:

  • (ArgumentError) 


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# File 'lib/kairos_mcp/skillset_manager.rb', line 81

def install(source_path, layer_override: nil, force: false)
  source_path = File.expand_path(source_path)
  raise ArgumentError, "Source path not found: #{source_path}" unless File.directory?(source_path)

  temp_skillset = Skillset.new(source_path)
  raise ArgumentError, "Invalid SkillSet: missing required fields" unless temp_skillset.valid?
  validate_skillset_name!(temp_skillset.name)

  dest = File.join(@skillsets_dir, temp_skillset.name)
  if File.directory?(dest)
    if force
      # Preserve user config files before replacing
      config_dir = File.join(dest, 'config')
      saved_configs = {}
      if File.directory?(config_dir)
        Dir.glob(File.join(config_dir, '*')).each do |f|
          saved_configs[File.basename(f)] = File.read(f)
        end
      end

      FileUtils.rm_rf(dest)

      # Copy new version
      FileUtils.cp_r(source_path, dest)

      # Restore user configs
      unless saved_configs.empty?
        FileUtils.mkdir_p(File.join(dest, 'config'))
        saved_configs.each do |name, content|
          File.write(File.join(dest, 'config', name), content)
        end
      end
    else
      raise ArgumentError, "SkillSet '#{temp_skillset.name}' already installed at #{dest}. Use --force to reinstall."
    end
  else
    FileUtils.mkdir_p(@skillsets_dir)
    FileUtils.cp_r(source_path, dest)
  end

  installed = Skillset.new(dest)
  installed.layer = layer_override if layer_override

  if layer_override
    set_config(installed.name, 'layer_override', layer_override.to_s)
  end

  set_config(installed.name, 'enabled', true)
  record_skillset_event(installed, force ? 'reinstall' : 'install')

  { success: true, name: installed.name, version: installed.version, layer: installed.layer, path: dest }
end

#install_from_archive(archive_data, layer_override: nil, force: false) ⇒ Object

Install a SkillSet from a Base64-encoded tar.gz archive. With force: true, replaces an existing SkillSet (preserves config/ files).

Raises:

  • (ArgumentError) 


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# File 'lib/kairos_mcp/skillset_manager.rb', line 315

def install_from_archive(archive_data, layer_override: nil, force: false)
  archive_data = symbolize_keys(archive_data)
  name = archive_data[:name]
  raise ArgumentError, "Archive missing 'name'" unless name
  validate_skillset_name!(name)
  raise ArgumentError, "Archive missing 'archive_base64'" unless archive_data[:archive_base64]

  dest = File.join(@skillsets_dir, name)
  if File.directory?(dest) && !force
    raise ArgumentError, "SkillSet '#{name}' already installed at #{dest}. Use force: true to reinstall."
  end

  Dir.mktmpdir('kairos_ss_install') do |tmpdir|
    tar_gz_data = Base64.strict_decode64(archive_data[:archive_base64])
    extract_tar_gz(tar_gz_data, tmpdir)

    extracted = File.join(tmpdir, name)
    raise ArgumentError, "Archive does not contain expected directory '#{name}'" unless File.directory?(extracted)

    temp_skillset = Skillset.new(extracted)
    raise ArgumentError, "Invalid SkillSet: missing required fields" unless temp_skillset.valid?

    unless temp_skillset.name == name
      raise ArgumentError, "Archive name mismatch: declared '#{name}' but skillset.json contains '#{temp_skillset.name}'"
    end

    unless temp_skillset.knowledge_only?
      raise SecurityError, "Refusing to install SkillSet with executable code (tools/ or lib/) from archive"
    end

    if archive_data[:content_hash]
      actual_hash = temp_skillset.content_hash
      unless actual_hash == archive_data[:content_hash]
        raise SecurityError, "Content hash mismatch: expected #{archive_data[:content_hash]}, got #{actual_hash}"
      end
    end

    # Force reinstall: stage in temp dir (already done above), then atomic swap
    if File.directory?(dest) && force
      # Preserve user config files
      config_dir = File.join(dest, 'config')
      saved_configs = {}
      if File.directory?(config_dir)
        Dir.glob(File.join(config_dir, '*')).each do |f|
          saved_configs[File.basename(f)] = File.read(f) if File.file?(f)
        end
      end

      # Atomic swap: remove old, move new into place
      FileUtils.rm_rf(dest)
      FileUtils.cp_r(extracted, dest)

      # Restore preserved config
      unless saved_configs.empty?
        FileUtils.mkdir_p(File.join(dest, 'config'))
        saved_configs.each do |fname, content|
          File.write(File.join(dest, 'config', fname), content)
        end
      end
    else
      FileUtils.mkdir_p(@skillsets_dir)
      FileUtils.cp_r(extracted, dest)
    end

    installed = Skillset.new(dest)
    installed.layer = layer_override if layer_override

    set_config(installed.name, 'layer_override', layer_override.to_s) if layer_override
    set_config(installed.name, 'enabled', true)
    record_skillset_event(installed, force ? 'reinstall_from_archive' : 'install_from_archive')

    { success: true, name: installed.name, version: installed.version,
      layer: installed.layer, path: dest, content_hash: installed.content_hash }
  end
end

#package(name) ⇒ Object

Package a knowledge-only SkillSet as a Base64-encoded tar.gz archive

Raises:

  • (ArgumentError) 


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# File 'lib/kairos_mcp/skillset_manager.rb', line 295

def package(name)
  skillset = find_skillset(name)
  raise ArgumentError, "SkillSet '#{name}' not found" unless skillset
  raise SecurityError, "Only knowledge-only SkillSets can be packaged for exchange" unless skillset.knowledge_only?

  tar_gz = create_tar_gz(skillset.path, skillset.name)
  {
    name: skillset.name,
    version: skillset.version,
    layer: skillset.layer.to_s,
    description: skillset.description,
    content_hash: skillset.content_hash,
    file_list: skillset.file_list,
    archive_base64: Base64.strict_encode64(tar_gz),
    packaged_at: Time.now.utc.iso8601
  }
end

#remove(name) ⇒ Object

Remove a SkillSet

Raises:

  • (ArgumentError) 


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# File 'lib/kairos_mcp/skillset_manager.rb', line 277

def remove(name)
  skillset = find_skillset(name)
  raise ArgumentError, "SkillSet '#{name}' not found" unless skillset

  if skillset.layer == :L0
    return { success: false, error: "L0 SkillSet '#{name}' requires human approval to remove", requires_approval: true }
  end

  check_dependents!(name)
  record_skillset_event(skillset, 'remove')

  FileUtils.rm_rf(skillset.path)
  remove_config(name)

  { success: true, name: name }
end

#upgrade_apply(names: nil, core_only: false) ⇒ Array<Hash>

Apply SkillSet upgrades from gem templates. Handles both upgrades (existing) and new installs.

Parameters:

  • names (Array<String>, nil) (defaults to: nil) —

    specific names to upgrade/install, or nil for all

  • core_only (Boolean) (defaults to: false) —

    if true, only auto-install CORE_SKILLSETS (skip external deps)

Returns:

  • (Array<Hash>) —

    results



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# File 'lib/kairos_mcp/skillset_manager.rb', line 208

def upgrade_apply(names: nil, core_only: false)
  upgrades = upgrade_check
  upgrades = upgrades.select { |u| names.include?(u[:name]) } if names

  # When core_only, skip new installs for non-core SkillSets
  # (existing SkillSet upgrades are always applied)
  if core_only
    upgrades = upgrades.reject { |u| u[:new_skillset] && !CORE_SKILLSETS.include?(u[:name]) }
  end

  results = []
  upgrades.each do |info|
    template_path = File.join(KairosMcp.gem_root, 'templates', 'skillsets', info[:name])

    if info[:new_skillset]
      # Install new SkillSet from template
      result = install(template_path)
      results << { name: info[:name], from: nil, to: info[:available_version],
                   action: 'installed', files_updated: 0 }
    else
      # Upgrade existing: copy changed files
      dest = File.join(@skillsets_dir, info[:name])
      info[:changed_files].each do |rel_path|
        src = File.join(template_path, rel_path)
        dst = File.join(dest, rel_path)
        FileUtils.mkdir_p(File.dirname(dst))
        FileUtils.cp(src, dst) if File.exist?(src)
      end

      installed = Skillset.new(dest)
      record_skillset_event(installed, 'upgrade')
      results << { name: info[:name], from: info[:installed_version], to: info[:available_version],
                   action: 'upgraded', files_updated: info[:changed_files].size }
    end
  end

  results
end

#upgrade_check ⇒ Array<Hash>

Check for available SkillSet upgrades from gem templates. Also detects NEW SkillSets in templates that are not yet installed.

Returns:

  • (Array<Hash>) —

    List of upgradable/new skillsets with version info



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# File 'lib/kairos_mcp/skillset_manager.rb', line 138

def upgrade_check
  results = []
  templates_dir = File.join(KairosMcp.gem_root, 'templates', 'skillsets')
  return results unless File.directory?(templates_dir)

  installed_names = all_skillsets.map(&:name)

  # Check existing installed SkillSets for upgrades
  all_skillsets.each do |installed|
    template_path = File.join(templates_dir, installed.name)
    next unless File.directory?(template_path)

    template_ss = Skillset.new(template_path)
    next unless template_ss.valid?

    installed_ver = Gem::Version.new(installed.version)
    template_ver = Gem::Version.new(template_ss.version)

    changed_files = diff_files(template_path, installed.path)

    if template_ver > installed_ver || changed_files.any?
      results << {
        name: installed.name,
        installed_version: installed.version,
        available_version: template_ss.version,
        version_bump: template_ver > installed_ver,
        changed_files: changed_files,
        new_skillset: false
      }
    end
  end

  # Detect NEW SkillSets in templates not yet installed
  Dir.children(templates_dir).sort.each do |name|
    template_path = File.join(templates_dir, name)
    next unless File.directory?(template_path)
    next if installed_names.include?(name)

    template_ss = Skillset.new(template_path)
    next unless template_ss.valid?

    results << {
      name: name,
      installed_version: nil,
      available_version: template_ss.version,
      description: template_ss.description,
      version_bump: false,
      changed_files: [],
      new_skillset: true
    }
  end

  results
end