Class: VMC::KNIFE::VCAPUpdateAvahiAliases

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

Overview

This is really a server-side feature. This is deprecated; use the dns_publisher vcap module instead. Regenerates the urls to publish as aliases. use vmc apps to read the uris of each app and also the manifest.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(avahi_aliases_path = nil, manifest_path = nil, client = nil, uri_filter = nil) ⇒ VCAPUpdateAvahiAliases

Returns a new instance of VCAPUpdateAvahiAliases.



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# File 'lib/vmc_knife/vmc_knife.rb', line 1365

def initialize(avahi_aliases_path=nil, manifest_path=nil,client=nil,uri_filter=nil)
  @manifest_path = manifest_path
  @client = client
  @config = avahi_aliases_path
  @config ||= '/etc/avahi/aliases'
  @uri_filter = uri_filter||/\.local$/
end

Instance Attribute Details

#do_exec ⇒ Object

Returns the value of attribute do_exec.



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# File 'lib/vmc_knife/vmc_knife.rb', line 1364

def do_exec
  @do_exec
end

#uri_filter ⇒ Object

Returns the value of attribute uri_filter.



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# File 'lib/vmc_knife/vmc_knife.rb', line 1364

def uri_filter
  @uri_filter
end

Instance Method Details

#all_uris ⇒ Object 



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# File 'lib/vmc_knife/vmc_knife.rb', line 1405

def all_uris()
  uris = manifest_uris+apps_uris
  uris.uniq!
  uris.sort!
  uris
end

#already_published_uris ⇒ Object 



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# File 'lib/vmc_knife/vmc_knife.rb', line 1411

def already_published_uris()
  already = IO.readlines @config
  already.collect! {|item| item.strip}
  already.select! {|item| !item.empty?}
  already.uniq!
  already.sort!
  already
end

#apps_uris ⇒ Object 



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# File 'lib/vmc_knife/vmc_knife.rb', line 1372

def apps_uris()
  return @apps_uris unless @apps_uris.nil?
  uris = Array.new
  return uris unless @client
  apps = @client.apps
  api_uri = URI.parse(@client.target).host
  uris << api_uri if @uri_filter =~ api_uri
  apps.each do |app|
    app[:uris].each do |uri|
      #only publish the uris in the local domain.
      uris << uri if @uri_filter =~ uri
    end
  end
  uris.uniq!
  uris.sort!
  @apps_uris = uris
  @apps_uris
end

#execute ⇒ Object 



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# File 'lib/vmc_knife/vmc_knife.rb', line 1419

def execute()
  return unless update_pending()
  # if the dns_publisher module is present let's not do this one.
  # the dns_publisher does a better job at mdns
  unless File.exist? "#{ENV['CLOUD_FOUNDRY_CONFIG_PATH']}/dns_publisher.yml"
    File.open(@config, "w") do |file|
      all_uris().each do |uri|
        file.puts uri + "\n"
      end
    end
    #configured so that we don't need root privileges on /etc/avahi/aliases:
    #the backticks don't work; system() works:
    system('avahi-publish-aliases') if @do_exec
  end
end

#manifest_uris ⇒ Object 



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# File 'lib/vmc_knife/vmc_knife.rb', line 1390

def manifest_uris()
  uris = Array.new
  return uris unless @manifest_path
  root = Root.new @manifest_path
  root.recipes.each do |recipe|
    recipe.applications.each do |application|
      application.uris.each do |uri|
        uris << uri if @uri_filter =~ uri
      end
    end
  end
  uris.uniq!
  uris.sort!
  uris
end

#update_pending ⇒ Object 



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# File 'lib/vmc_knife/vmc_knife.rb', line 1434

def update_pending()
  already = already_published_uris()
  length_already = already.length
  allall = already + all_uris()
  allall.uniq!
  return length_already != allall.length
end