Module: Resource

Included in:
Rbbt
Defined in:
lib/rbbt/resource.rb,
lib/rbbt/resource/util.rb,
lib/rbbt/resource/with_key.rb

Defined Under Namespace

Modules: WithKey

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, prev = nil, *args) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 43

def method_missing(name, prev = nil, *args)
  if prev.nil?
    root.send(name, *args)
  else
    root.send(name, prev, *args)
  end
end

Class Attribute Details

.lock_dir ⇒ Object

Returns the value of attribute lock_dir.



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# File 'lib/rbbt/resource.rb', line 11

def lock_dir
  @lock_dir
end

Instance Attribute Details

#pkgdir ⇒ Object

Returns the value of attribute pkgdir.



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# File 'lib/rbbt/resource.rb', line 32

def pkgdir
  @pkgdir
end

#rake_dirs ⇒ Object

Returns the value of attribute rake_dirs.



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# File 'lib/rbbt/resource.rb', line 32

def rake_dirs
  @rake_dirs
end

#remote_server ⇒ Object

Returns the value of attribute remote_server.



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# File 'lib/rbbt/resource.rb', line 32

def remote_server
  @remote_server
end

#resources ⇒ Object

Returns the value of attribute resources.



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# File 'lib/rbbt/resource.rb', line 32

def resources
  @resources
end

#search_paths ⇒ Object

Returns the value of attribute search_paths.



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# File 'lib/rbbt/resource.rb', line 32

def search_paths
  @search_paths
end

#server_missing_resource_cache ⇒ Object

Returns the value of attribute server_missing_resource_cache.



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# File 'lib/rbbt/resource.rb', line 73

def server_missing_resource_cache
  @server_missing_resource_cache
end

#subdir ⇒ Object

Returns the value of attribute subdir.



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# File 'lib/rbbt/resource.rb', line 32

def subdir
  @subdir
end

Class Method Details

.extended(base) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 22

def self.extended(base)
  base.pkgdir = 'rbbt'
  base.subdir = ''
  base.resources = {}
  base.rake_dirs = {}
  base.search_paths = Path::SEARCH_PATHS.dup
  base.remote_server = Resource.remote_servers[base.to_s] || Resource.remote_servers["*"]
  base
end

.remote_servers ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 18

def self.remote_servers
  @remote_servers = Rbbt.etc.file_servers.exists? ? Rbbt.etc.file_servers.yaml : {}
end

Instance Method Details

#[](file = nil) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 51

def [](file = nil)
  if file.nil?
    root
  else
    root.send(file)
  end
end

#claim(path, type, content = nil, &block) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 59

def claim(path, type, content = nil, &block)
  if type == :rake
    @rake_dirs[path] = content
  else
    @resources[path] = [type, content || block]

    if type == :install
      software_dir = path.resource.root.software
      set_software_env(software_dir) unless $set_software_env
      $set_software_env = true
    end
  end
end

#get_from_server(path, final_path, remote_server = nil) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 74

def get_from_server(path, final_path, remote_server = nil)
  remote_server ||= self.remote_server
  remote_server = "http://" + remote_server unless remote_server =~ /^[a-z]+:\/\//
  url = File.join(remote_server, '/resource/', self.to_s, 'get_file')
  url << "?" << Misc.hash2GET_params(:file => path, :create => false)

  begin
    @server_missing_resource_cache ||= Set.new
    raise "Resource Not Found" if @server_missing_resource_cache.include? url
    
    #lock_filename = Persist.persistence_path(final_path, {:dir => Resource.lock_dir})
    
    lock_filename = nil # it seems like this was locked already.

    Misc.lock lock_filename do
      Net::HTTP.get_response URI(url) do |response|
        case response
        when Net::HTTPSuccess, Net::HTTPOK
          Misc.sensiblewrite(final_path) do |file|
            response.read_body do |chunk|
              file.write chunk
            end
          end
        when Net::HTTPRedirection, Net::HTTPFound
          location = response['location']
          Log.debug("Feching directory from: #{location}. Into: #{final_path}")
          FileUtils.mkdir_p final_path unless File.exist? final_path
          TmpFile.with_file do |tmp_dir|
            Misc.in_dir tmp_dir do
              CMD.cmd('tar xvfz -', :in => Open.open(location, :nocache => true))
            end
            FileUtils.mv tmp_dir, final_path
          end
        when Net::HTTPInternalServerError
          @server_missing_resource_cache << url
          raise "Resource Not Found"
        else
          raise "Response not understood: #{response.inspect}"
        end
      end
    end
  rescue
    Log.warn "Could not retrieve (#{self.to_s}) #{ path } from #{ remote_server }"
    Log.error $!.message
    FileUtils.rm_rf final_path if File.exist? final_path
    return false
  end
end

#has_rake(path) ⇒ Object 



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# File 'lib/rbbt/resource/util.rb', line 118

def has_rake(path)
  !! rake_for(path)
end

#identify(path) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 285

def identify(path)
  path = File.expand_path(path)
  resource ||= Rbbt
  (Path::STANDARD_SEARCH + resource.search_order + resource.search_paths.keys).uniq.each do |name|
    pattern = resource.search_paths[name]
    next if patterns.nil?
    if String ===  pattern and pattern.include?('{')
      regexp = "^" + pattern.gsub(/{([^}]+)}/,'(?<\1>[^/]+)') + "(?:/(?<REST>.*))?/?$"
      if m = path.match(regexp) 
        if m["PKGDIR"] == resource.pkgdir
          return self[m["TOPLEVEL"]][m["SUBPATH"]][m["REST"]]
        end
      end
    end
  end
  nil
end

#produce(path, force = false) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 123

def produce(path, force = false)
  case
  when @resources.include?(path)
    type, content = @resources[path]
  when (Path === path && @resources.include?(path.original))
    type, content = @resources[path.original]
  when has_rake(path)
    type = :rake
    rake_dir, content = rake_for(path)
    rake_dir = Path.setup(rake_dir.dup, self.pkgdir, self)
  else
    begin
      if path !~ /\.(gz|bgz)$/
        begin
          produce(path.annotate(path + '.gz'), force)
        rescue
          produce(path.annotate(path + '.bgz'), force)
        end
      end
    rescue
      raise "Resource is missing and does not seem to be claimed: #{ self } -- #{ path } "
    end
  end

  if path.respond_to?(:find) 
    final_path = force ? path.find(:default) : path.find
  else
    final_path = path
  end

  if type and not File.exist?(final_path) or force
    Log.medium "Producing: #{ final_path }"
    lock_filename = Persist.persistence_path(final_path, {:dir => Resource.lock_dir})
    Misc.lock lock_filename do
      FileUtils.rm_rf final_path if force and File.exist? final_path
      if not File.exist?(final_path) or force
        (remote_server and get_from_server(path, final_path)) or
        begin
          case type
          when :string
            Misc.sensiblewrite(final_path, content)
          when :url
            options = {}
            options[:noz] = true if Open.gzip?(final_path) || Open.bgzip?(final_path) || Open.zip?(final_path)
            Misc.sensiblewrite(final_path, Open.open(content, options))
          when :proc
            data = case content.arity
                   when 0
                     content.call
                   when 1
                     content.call final_path
                   end
            case data
            when String, IO, StringIO
              Misc.sensiblewrite(final_path, data) 
            when Array
              Misc.sensiblewrite(final_path, data * "\n")
            when TSV
              Misc.sensiblewrite(final_path, data.dumper_stream) 
            when TSV::Dumper
              Misc.sensiblewrite(final_path, data.stream) 
            when nil
            else
              raise "Unkown object produced: #{Misc.fingerprint data}"
            end
          when :rake
            run_rake(path, content, rake_dir)
          when :install
            Log.debug "Installing software: #{path}"

            $set_software_env = false unless File.exists? path
            
            software_dir = path.resource.root.software.find :user
            helper_file = File.expand_path(Rbbt.share.install.software.lib.install_helpers.find(:lib, caller_lib_dir(__FILE__)))
            #helper_file = File.expand_path(Rbbt.share.install.software.lib.install_helpers.find)

            preamble = <<-EOF
#!/bin/bash

RBBT_SOFTWARE_DIR="#{software_dir}"

INSTALL_HELPER_FILE="#{helper_file}"
source "$INSTALL_HELPER_FILE"
            EOF

            content = content.call if Proc === content

            content = if content =~ /git:|\.git$/
                        {:git => content}
                      else
                        {:src => content}
                      end if String === content and Open.remote?(content)

            script_text = case content
                          when nil
                            raise "No way to install #{path}"
                          when Path
                            Open.read(content) 
                          when String
                            if Misc.is_filename?(content) and Open.exists?(content)
                              Open.read(content) 
                            else
                              content
                            end
                          when Hash
                            name = content[:name] || File.basename(path)
                            git = content[:git]
                            src = content[:src]
                            url = content[:url]
                            extra = content[:extra]
                            commands = content[:commands]
                            if git
                              <<-EOF

name='#{name}'
url='#{git}'

install_git "$name" "$url" #{extra}

#{commands}
                              EOF
                            elsif src
                              <<-EOF

name='#{name}'
url='#{src}'

install_src "$name" "$url" #{extra}

#{commands}
                              EOF
                            else
                              <<-EOF

name='#{name}'
url='#{url}'

#{commands}
                              EOF
                            end
                          end

            script = preamble + "\n" + script_text
            Log.debug "Installing software with script:\n" << script
            CMD.cmd_log('bash', :in => script)

            set_software_env(software_dir) unless $set_software_env
            $set_software_env = true
          else
            raise "Could not produce #{ resource }. (#{ type }, #{ content })"
          end
        rescue
          FileUtils.rm_rf final_path if File.exist? final_path
          raise $!
        end
      end
    end
  end

  path
end

#rake_for(path) ⇒ Object 



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# File 'lib/rbbt/resource/util.rb', line 110

def rake_for(path)
  @rake_dirs.reject{|dir, content|
    !Misc.common_path(dir, path)
  }.sort_by{|dir, content|
    dir.length
  }.last
end

#root ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 39

def root
  Path.setup @subdir || "", @pkgdir, self, @search_paths
end

#run_rake(path, rakefile, rake_dir) ⇒ Object 



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# File 'lib/rbbt/resource/util.rb', line 122

def run_rake(path, rakefile, rake_dir)
  task = Misc.path_relative_to rake_dir, path
  rakefile = rakefile.produce if rakefile.respond_to? :produce

  rake_dir = rake_dir.find(:user) if rake_dir.respond_to? :find

  begin
    require 'rbbt/resource/rake'
    Rake.run(rakefile, rake_dir, task)
  rescue Rake::TaskNotFound
    raise $! if rake_dir.nil? or rake_dir.empty? or rake_dir == "/" or rake_dir == "./"
    task = File.join(File.basename(rake_dir), task)
    rake_dir = File.dirname(rake_dir)
    retry
  end
end

#set_libdir(value = nil) ⇒ Object 



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# File 'lib/rbbt/resource.rb', line 34

def set_libdir(value = nil)
  _libdir = value || Path.caller_lib_dir
  search_paths.merge!(:lib => File.join(_libdir, '{TOPLEVEL}', '{SUBPATH}'))
end

#set_software_env(software_dir) ⇒ Object 



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# File 'lib/rbbt/resource/util.rb', line 33

def set_software_env(software_dir)
  software_dir.find_all.each do |software_dir|
    next unless software_dir.exists?
    software_dir = File.expand_path(software_dir)
    opt_dir = File.join(software_dir, 'opt')
    bin_dir = File.join(opt_dir, 'bin')

    Misc.env_add 'PATH', bin_dir

    FileUtils.mkdir_p opt_dir unless File.exist? opt_dir

    %w(.ld-paths .c-paths .pkgconfig-paths .aclocal-paths .java-classpaths).each do |file|
      filename = File.join(opt_dir, file)
      begin
        FileUtils.touch filename unless File.exist? filename
      rescue
        Log.warn("Could not touch #{ filename }")
      end
    end

    Open.read(File.join opt_dir, '.c-paths').split(/\n/).each do |line|
      dir = line.chomp
      dir = File.join(opt_dir, dir) unless dir[0] == "/"
      Misc.env_add('CPLUS_INCLUDE_PATH',dir)
      Misc.env_add('C_INCLUDE_PATH',dir)
    end if File.exist? File.join(opt_dir, '.c-paths')

    Open.read(File.join opt_dir, '.ld-paths').split(/\n/).each do |line|
      dir = line.chomp
      dir = File.join(opt_dir, dir) unless dir[0] == "/"
      Misc.env_add('LIBRARY_PATH',dir)
      Misc.env_add('LD_LIBRARY_PATH',dir)
      Misc.env_add('LD_RUN_PATH',dir)
    end if File.exist? File.join(opt_dir, '.ld-paths')

    Open.read(File.join opt_dir, '.pkgconfig-paths').split(/\n/).each do |line|
      dir = line.chomp
      dir = File.join(opt_dir, dir) unless dir[0] == "/"
      Misc.env_add('PKG_CONFIG_PATH',dir)
    end if File.exist? File.join(opt_dir, '.pkgconfig-paths')

    Open.read(File.join opt_dir, '.aclocal-paths').split(/\n/).each do |line|
      dir = line.chomp
      dir = File.join(opt_dir, dir) unless dir[0] == "/"
      Misc.env_add('ACLOCAL_FLAGS', "-I #{dir}", ' ')
    end if File.exist? File.join(opt_dir, '.aclocal-paths')

    Open.read(File.join opt_dir, '.java-classpaths').split(/\n/).each do |line|
      dir = line.chomp
      dir = File.join(opt_dir, dir) unless dir[0] == "/"
      Misc.env_add('CLASSPATH', "#{dir}")
    end if File.exist? File.join(opt_dir, '.java-classpaths')

    Dir.glob(File.join opt_dir, 'jars', '*.jar').each do |file|
      Misc.env_add('CLASSPATH', "#{file}")
    end

    if File.exist?(File.join(opt_dir, '.post_install')) and File.directory?(File.join(opt_dir, '.post_install'))
      Dir.glob(File.join(opt_dir, '.post_install','*')).each do |file|

        # Load exports
        Open.read(file).split("\n").each do |line|
          next unless line =~ /^\s*export\s+([^=]+)=(.*)/
          var = $1.strip
          value = $2.strip
          value.sub!(/^['"]/,'')
          value.sub!(/['"]$/,'')
          value.gsub!(/\$[a-z_0-9]+/i){|var| ENV[var[1..-1]] }
          Log.debug "Set variable export from .post_install: #{Misc.fingerprint [var,value]*"="}"
          ENV[var] = value
        end
      end
    end
  end
end

#with_key(key) ⇒ Object 



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# File 'lib/rbbt/resource/with_key.rb', line 20

def with_key(key)
  klass = self
  o     = Object.new
  o.extend WithKey
  o.klass = self
  o.key   = key
  o
end