Class: Teapot::Controller

Inherits:
Object
  • Object
show all
Defined in:
lib/teapot/controller.rb,
lib/teapot/controller/run.rb,
lib/teapot/controller/list.rb,
lib/teapot/controller/build.rb,
lib/teapot/controller/clean.rb,
lib/teapot/controller/fetch.rb,
lib/teapot/controller/create.rb,
lib/teapot/controller/generate.rb

Constant Summary collapse

MAXIMUM_FETCH_DEPTH = 
20

Instance Method Summary collapse

Constructor Details

#initialize(root, options) ⇒ Controller

Returns a new instance of Controller.



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# File 'lib/teapot/controller.rb', line 32

def initialize(root, options)
  @root = Pathname(root)
  @options = options
  
  @log_output = @options.fetch(:log, $stdout)
  
  @options[:maximum_fetch_depth] ||= MAXIMUM_FETCH_DEPTH
end

Instance Method Details

#build(dependency_names) ⇒ Object 



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# File 'lib/teapot/controller/build.rb', line 25

def build(dependency_names)
  chain = context.dependency_chain(dependency_names, context.configuration)

  ordered = chain.ordered

  if @options[:only]
    ordered = context.direct_targets(ordered)
  end

  ordered.each do |(target, dependency)|
    if target.respond_to?(:build!) and !@options[:dry]
      log "Building #{target.name} for dependency #{dependency}...".color(:cyan)
      
      target.build!(context.configuration)
    end
  end
  
  log "Completed build successfully.".color(:green)
  
  return chain, ordered
end

#clean ⇒ Object 



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# File 'lib/teapot/controller/clean.rb', line 25

def clean
  log "Removing #{configuration.platforms_path}...".color(:cyan)
  FileUtils.rm_rf context.configuration.platforms_path

  log "Removing #{configuration.packages_path}...".color(:cyan)
  FileUtils.rm_rf context.configuration.packages_path
end

#context ⇒ Object 



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# File 'lib/teapot/controller.rb', line 45

def context
  @context ||= Context.new(@root,
    :configuration => @options[:configuration]
  )
end

#create(project_name, source, packages) ⇒ Object 



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# File 'lib/teapot/controller/create.rb', line 28

def create(project_name, source, packages)
  name = Name.new(project_name)
  
  log "Creating project named #{project_name} at path #{@root}...".color(:cyan)
  
  File.open(@root + TEAPOT_FILE, "w") do |output|
    output.puts "\# Teapot configuration generated at #{Time.now.to_s}", ''
  
    output.puts "required_version #{VERSION.dump}", ''
  
    output.puts "define_configuration #{name.target.dump} do |configuration|"
  
    output.puts "\tconfiguration[:source] = #{source.dump}", ''
  
    packages.each do |name|
      output.puts "\tconfiguration.import! #{name.dump}"
    end
  
    output.puts "end"
  end

  # Fetch all packages:
  fetch

  # Generate the default project if it is possible to do so:
  generate_project(project_name)
end

#fetch ⇒ Object 



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# File 'lib/teapot/controller/fetch.rb', line 25

def fetch
  resolved = Set.new
  configuration = context.configuration
  unresolved = context.unresolved(configuration.packages)
  tries = 0

  while tries < @options[:maximum_fetch_depth]
    configuration.packages.each do |package|
      next if resolved.include? package
    
      fetch_package(context, configuration, package)
    
      # We are done with this package, don't try to process it again:
      resolved << package
    end
  
    # Resolve any/all imports:
    configuration = configuration.materialize
  
    previously_unresolved = unresolved
    unresolved = context.unresolved(configuration.packages)
  
    # No additional packages were resolved, we have reached a fixed point:
    if previously_unresolved == unresolved || unresolved.count == 0
      break
    end
  
    tries += 1
  end

  if unresolved.count > 0
    log "Could not fetch all packages!".color(:red)
    unresolved.each do |package|
      log "\t#{package}".color(:red)
    end
  else
    log "Completed fetch successfully.".color(:green)
  end
end

#generate(name, arguments) ⇒ Object 



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# File 'lib/teapot/controller/generate.rb', line 25

def generate(name, arguments)
  context.configuration.load_all

  generator = context.generators[name]

  unless generator
    abort "Could not find generator with name #{name.inspect}".color(:red)
  end

  log "Generating #{name.inspect} with arguments #{arguments.inspect}".color(:cyan)
  generator.generate!(*arguments)
end

#list ⇒ Object 



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# File 'lib/teapot/controller/list.rb', line 25

def list
  # Should this somehow consider context.root_package?
  context.configuration.packages.each do |package|
    log "Package #{package.name} (from #{package.path}):".bright
  
    begin
      definitions = context.load(package)
    
      definitions.each do |definition|
        log "\t#{definition}"
    
        definition.description.each_line do |line|
          log "\t\t#{line.chomp}".color(:cyan)
        end if definition.description
    
        case definition
        when Target
          definition.dependencies.each do |name|
            log "\t\t- depends on #{name.inspect}".color(:red)
          end
  
          definition.provisions.each do |(name, provision)|
            if Dependency::Alias === provision
              log "\t\t- provides #{name.inspect} => #{provision.dependencies.inspect}".color(:green)
            else
              log "\t\t- provides #{name.inspect}".color(:green)
            end
          end
        when Configuration
          definition = definition.materialize
        
          definition.packages.each do |package|
            if package.local?
              log "\t\t- links #{package.name} from #{package.options[:local]}".color(:green)
            elsif package.external?
              log "\t\t- clones #{package.name} from #{package.external_url(context.root)}".color(:green)
            else
              log "\t\t- references #{package.name} from #{package.path}".color(:green)
            end
          end
        
          definition.imports.each do |import|
            log "\t\t- unmaterialised import #{import.name}".color(:red)
          end
        end
      end
    rescue NonexistantTeapotError => error
      log "\t#{error.message}".color(:red)
    rescue IncompatibleTeapotError => error
      log "\t#{error.message}".color(:red)
    end
  end
end

#log(*args) ⇒ Object 



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# File 'lib/teapot/controller.rb', line 41

def log(*args)
  @log_output.puts *args
end

#run(dependency_names = []) ⇒ Object 



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# File 'lib/teapot/controller/run.rb', line 25

def run(dependency_names = [])
  configuration = context.configuration
  
  dependency_names += configuration[:run] || []
  
  log "Running dependencies: #{dependency_names}"
  
  chain, ordered = build(dependency_names)
  
  ordered.each do |(target, dependency)|
    if target.respond_to?(:run!) and !@options[:dry]
      log "Running #{target.name} for dependency #{dependency}...".color(:cyan)
      
      target.run!(configuration)
    end
  end
end