Module: Vmpooler

Defined in:
lib/vmpooler.rb,
lib/vmpooler/api.rb,
lib/vmpooler/api/v1.rb,
lib/vmpooler/logger.rb,
lib/vmpooler/statsd.rb,
lib/vmpooler/version.rb,
lib/vmpooler/graphite.rb,
lib/vmpooler/dashboard.rb,
lib/vmpooler/providers.rb,
lib/vmpooler/api/helpers.rb,
lib/vmpooler/api/reroute.rb,
lib/vmpooler/dummy_statsd.rb,
lib/vmpooler/pool_manager.rb,
lib/vmpooler/api/dashboard.rb,
lib/vmpooler/providers/base.rb,
lib/vmpooler/providers/dummy.rb,
lib/vmpooler/providers/vsphere.rb,
lib/vmpooler/generic_connection_pool.rb

Defined Under Namespace

Classes: API, Dashboard, DummyStatsd, Graphite, Logger, PoolManager, Providers, Statsd

Constant Summary collapse

VERSION = 
'0.5.0'.freeze

Class Method Summary collapse

Class Method Details

.config(filepath = 'vmpooler.yaml') ⇒ Object 



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# File 'lib/vmpooler.rb', line 19

def self.config(filepath = 'vmpooler.yaml')
  # Take the config either from an ENV config variable or from a config file
  if ENV['VMPOOLER_CONFIG']
    config_string = ENV['VMPOOLER_CONFIG']
    # Parse the YAML config into a Hash
    # Whitelist the Symbol class
    parsed_config = YAML.safe_load(config_string, [Symbol])
  else
    # Take the name of the config file either from an ENV variable or from the filepath argument
    config_file = ENV['VMPOOLER_CONFIG_FILE'] || filepath
    parsed_config = YAML.load_file(config_file) if File.exist? config_file
  end

  parsed_config ||= { config: {} }

  # Bail out if someone attempts to start vmpooler with dummy authentication
  # without enbaling debug mode.
  if parsed_config.has_key? :auth
    if parsed_config[:auth]['provider'] == 'dummy'
      unless ENV['VMPOOLER_DEBUG']
        warning = [
          'Dummy authentication should not be used outside of debug mode',
          'please set environment variable VMPOOLER_DEBUG to \'true\' if you want to use dummy authentication'
        ]

        raise warning.join(";\s")
      end
    end
  end

  # Set some configuration defaults
  parsed_config[:config]['task_limit'] = string_to_int(ENV['TASK_LIMIT']) || parsed_config[:config]['task_limit'] || 10
  parsed_config[:config]['migration_limit'] = string_to_int(ENV['MIGRATION_LIMIT']) if ENV['MIGRATION_LIMIT']
  parsed_config[:config]['vm_checktime'] = string_to_int(ENV['VM_CHECKTIME']) || parsed_config[:config]['vm_checktime'] || 1
  parsed_config[:config]['vm_lifetime'] = string_to_int(ENV['VM_LIFETIME']) || parsed_config[:config]['vm_lifetime']  || 24
  parsed_config[:config]['prefix'] = ENV['PREFIX'] || parsed_config[:config]['prefix'] || ''

  parsed_config[:config]['logfile'] = ENV['LOGFILE'] if ENV['LOGFILE']

  parsed_config[:config]['site_name'] = ENV['SITE_NAME'] if ENV['SITE_NAME']
  parsed_config[:config]['domain'] = ENV['DOMAIN'] if ENV['DOMAIN']
  parsed_config[:config]['clone_target'] = ENV['CLONE_TARGET'] if ENV['CLONE_TARGET']
  parsed_config[:config]['timeout'] = string_to_int(ENV['TIMEOUT']) if ENV['TIMEOUT']
  parsed_config[:config]['vm_lifetime_auth'] = string_to_int(ENV['VM_LIFETIME_AUTH']) if ENV['VM_LIFETIME_AUTH']
  parsed_config[:config]['max_tries'] = string_to_int(ENV['MAX_TRIES']) if ENV['MAX_TRIES']
  parsed_config[:config]['retry_factor'] = string_to_int(ENV['RETRY_FACTOR']) if ENV['RETRY_FACTOR']
  parsed_config[:config]['create_folders'] = ENV['CREATE_FOLDERS'] if ENV['CREATE_FOLDERS']
  parsed_config[:config]['create_template_delta_disks'] = ENV['CREATE_TEMPLATE_DELTA_DISKS'] if ENV['CREATE_TEMPLATE_DELTA_DISKS']
  parsed_config[:config]['experimental_features'] = ENV['EXPERIMENTAL_FEATURES'] if ENV['EXPERIMENTAL_FEATURES']
  parsed_config[:config]['purge_unconfigured_folders'] = ENV['PURGE_UNCONFIGURED_FOLDERS'] if ENV['PURGE_UNCONFIGURED_FOLDERS']
  parsed_config[:config]['usage_stats'] = ENV['USAGE_STATS'] if ENV['USAGE_STATS']

  parsed_config[:redis] = parsed_config[:redis] || {}
  parsed_config[:redis]['server'] = ENV['REDIS_SERVER'] || parsed_config[:redis]['server'] || 'localhost'
  parsed_config[:redis]['port'] = string_to_int(ENV['REDIS_PORT']) if ENV['REDIS_PORT']
  parsed_config[:redis]['password'] = ENV['REDIS_PASSWORD'] if ENV['REDIS_PASSWORD']
  parsed_config[:redis]['data_ttl'] = string_to_int(ENV['REDIS_DATA_TTL']) || parsed_config[:redis]['data_ttl'] || 168

  parsed_config[:statsd] = parsed_config[:statsd] || {} if ENV['STATSD_SERVER']
  parsed_config[:statsd]['server'] = ENV['STATSD_SERVER'] if ENV['STATSD_SERVER']
  parsed_config[:statsd]['prefix'] = ENV['STATSD_PREFIX'] if ENV['STATSD_PREFIX']
  parsed_config[:statsd]['port'] = string_to_int(ENV['STATSD_PORT']) if ENV['STATSD_PORT']

  parsed_config[:graphite] = parsed_config[:graphite] || {} if ENV['GRAPHITE_SERVER']
  parsed_config[:graphite]['server'] = ENV['GRAPHITE_SERVER'] if ENV['GRAPHITE_SERVER']
  parsed_config[:graphite]['prefix'] = ENV['GRAPHITE_PREFIX'] if ENV['GRAPHITE_PREFIX']
  parsed_config[:graphite]['port'] = string_to_int(ENV['GRAPHITE_PORT']) if ENV['GRAPHITE_PORT']

  parsed_config[:auth] = parsed_config[:auth] || {} if ENV['AUTH_PROVIDER']
  if parsed_config.has_key? :auth
    parsed_config[:auth]['provider'] = ENV['AUTH_PROVIDER'] if ENV['AUTH_PROVIDER']
    parsed_config[:auth][:ldap] = parsed_config[:auth][:ldap] || {} if parsed_config[:auth]['provider'] == 'ldap'
    parsed_config[:auth][:ldap]['host'] = ENV['LDAP_HOST'] if ENV['LDAP_HOST']
    parsed_config[:auth][:ldap]['port'] = string_to_int(ENV['LDAP_PORT']) if ENV['LDAP_PORT']
    parsed_config[:auth][:ldap]['base'] = ENV['LDAP_BASE'] if ENV['LDAP_BASE']
    parsed_config[:auth][:ldap]['user_object'] = ENV['LDAP_USER_OBJECT'] if ENV['LDAP_USER_OBJECT']
  end

  # Create an index of pool aliases
  parsed_config[:pool_names] = Set.new
  unless parsed_config[:pools]
    redis = new_redis(parsed_config[:redis]['server'], parsed_config[:redis]['port'], parsed_config[:redis]['password'])
    parsed_config[:pools] = load_pools_from_redis(redis)
  end

  # Create an index of pools by title
  parsed_config[:pool_index] = pool_index(parsed_config[:pools])

  parsed_config[:pools].each do |pool|
    parsed_config[:pool_names] << pool['name']
    if pool['alias']
      if pool['alias'].is_a?(Array)
        pool['alias'].each do |pool_alias|
          parsed_config[:alias] ||= {}
          parsed_config[:alias][pool_alias] = [pool['name']] unless parsed_config[:alias].key? pool_alias
          parsed_config[:alias][pool_alias] << pool['name'] unless parsed_config[:alias][pool_alias].include? pool['name']
          parsed_config[:pool_names] << pool_alias
        end
      elsif pool['alias'].is_a?(String)
        parsed_config[:alias][pool['alias']] = pool['name']
        parsed_config[:pool_names] << pool['alias']
      end
    end
  end

  if parsed_config[:tagfilter]
    parsed_config[:tagfilter].keys.each do |tag|
      parsed_config[:tagfilter][tag] = Regexp.new(parsed_config[:tagfilter][tag])
    end
  end

  parsed_config[:uptime] = Time.now

  parsed_config
end

.load_pools_from_redis(redis) ⇒ Object 



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# File 'lib/vmpooler.rb', line 135

def self.load_pools_from_redis(redis)
  pools = []
  redis.smembers('vmpooler__pools').each do |pool|
    pool_hash = {}
    redis.hgetall("vmpooler__pool__#{pool}").each do |k, v|
      pool_hash[k] = v
    end
    pool_hash['alias'] = pool_hash['alias'].split(',')
    pools << pool_hash
  end
  pools
end

.new_logger(logfile) ⇒ Object 



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# File 'lib/vmpooler.rb', line 152

def self.new_logger(logfile)
  Vmpooler::Logger.new logfile
end

.new_metrics(params) ⇒ Object 



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# File 'lib/vmpooler.rb', line 156

def self.new_metrics(params)
  if params[:statsd]
    Vmpooler::Statsd.new(params[:statsd])
  elsif params[:graphite]
    Vmpooler::Graphite.new(params[:graphite])
  else
    Vmpooler::DummyStatsd.new
  end
end

.new_redis(host = 'localhost', port = nil, password = nil) ⇒ Object 



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# File 'lib/vmpooler.rb', line 148

def self.new_redis(host = 'localhost', port = nil, password = nil)
  Redis.new(host: host, port: port, password: password)
end

.pool_index(pools) ⇒ Object 



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# File 'lib/vmpooler.rb', line 170

def self.pool_index(pools)
  pools_hash = {}
  index = 0
  for pool in pools
    pools_hash[pool['name']] = index
    index += 1
  end
  pools_hash
end

.pools(conf) ⇒ Object 



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# File 'lib/vmpooler.rb', line 166

def self.pools(conf)
  conf[:pools]
end

.string_to_int(s) ⇒ Object 



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# File 'lib/vmpooler.rb', line 180

def self.string_to_int(s)
  # Returns a integer if input is a string
  return if s.nil?
  return unless s =~ /\d/
  return Integer(s)
end