Class: MiqVimBroker

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

Defined Under Namespace

Classes: VimBrokerIdConv

Constant Summary collapse

MB = 
1048576
@@preLoad = 
false
@@debugUpdates = 
false
@@classModed = 
false
@@notifyMethod = 
nil
@@updateDelay = 
nil
@@cacheScope = 
:cache_scope_full
@@selectorHash = 
{}
@@maxWait = 
60
@@maxObjects = 
250

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(mode = :client, port = 9001) ⇒ MiqVimBroker

Returns a new instance of MiqVimBroker.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 35

def initialize(mode = :client, port = 9001)
  if mode == :client
    require 'rubygems'
    require 'httpclient'  # needed for exception classes
    require 'VMwareWebService/MiqVimDump'
    require 'VMwareWebService/MiqVimVdlMod'
    require 'VMwareWebService/MiqVimDrbDebug'

    #
    # Modify the meta-class of DRb::DRbObject
    # so we can alias class methods
    #
    unless @@classModed
      class <<DRb::DRbObject
        alias_method :new_with_original, :new_with
        def new_with(uri, ref)
          obj = new_with_original(uri, ref)
          obj.extend(MiqVimVdlVcConnectionMod) if obj.respond_to?(:vdlVcConnection)
          obj.registerBrokerObj($$) if obj.respond_to?(:registerBrokerObj)
          (obj)
        end
      end

      DRb.instance_variable_set(:@mutex, Sync.new)
      DRb::DRbConn.instance_variable_set(:@mutex, Sync.new)
      @@classModed = true
    end

    @mode = :client

    # start DRb service if it hasn't been started before
    begin
      DRb.current_server
    rescue DRb::DRbServerNotFound
      DRb.start_service
    end
    @broker = DRbObject.new(nil, "druby://127.0.0.1:#{port}")
  elsif mode == :server
    require 'timeout'
    require 'VMwareWebService/broker_timeout'

    # Un-comment following 2 lines to enable Sync lock debugging.
    # require 'broker_sync_debug'
    # extend BrokerSyncDebug

    unless @@classModed
      DRb.instance_variable_set(:@mutex, sync_for_drb)
      DRb::DRbConn.instance_variable_set(:@mutex, sync_for_drb_drbconn)
    end
    @@classModed = true

    require 'VMwareWebService/MiqVimBrokerMods' # only needed by the server
    @mode = :server
    @shuttingDown = false

    @connectionHash = {}
    @lockHash = {}        # Protects individual @connectionHash entries
    @connectionLock = connection_lock # Protects @lockHash

    @configLock   = config_lock
    @selectorHash = @@selectorHash
    @cacheScope   = @@cacheScope

    acl = ACL.new(%w( deny all allow 127.0.0.1/32 ))
    DRb.install_acl(acl)
    DRb.start_service("druby://127.0.0.1:#{port}", self, :idconv => VimBrokerIdConv.new)
  else
    raise "MiqVimBroker: unrecognized mode #{mode}"
  end
end

Instance Attribute Details

#cacheScope ⇒ Object

Returns the value of attribute cacheScope.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 139

def cacheScope
  @cacheScope
end

#shuttingDown ⇒ Object (readonly)

Returns the value of attribute shuttingDown.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 20

def shuttingDown
  @shuttingDown
end

Class Method Details

.cacheScope ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 131

def self.cacheScope
  @@cacheScope
end

.cacheScope=(val) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 135

def self.cacheScope=(val)
  @@cacheScope = val
end

.connectionKey(server, username) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 357

def self.connectionKey(server, username)
  "#{server}_#{username}"
end

.debugUpdates ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 262

def self.debugUpdates
  @@debugUpdates
end

.debugUpdates=(val) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 258

def self.debugUpdates=(val)
  @@debugUpdates = val
end

.maxObjects ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 333

def self.maxObjects
  @@maxObjects
end

.maxObjects=(val) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 329

def self.maxObjects=(val)
  @@maxObjects = val
end

.maxWait ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 325

def self.maxWait
  @@maxWait
end

.maxWait=(val) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 321

def self.maxWait=(val)
  @@maxWait = val
end

.notifyMethod ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 283

def self.notifyMethod
  @@notifyMethod
end

.notifyMethod=(val) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 279

def self.notifyMethod=(val)
  @@notifyMethod = val
end

.preLoad ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 254

def self.preLoad
  @@preLoad
end

.preLoad=(val) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 250

def self.preLoad=(val)
  @@preLoad = val
end

.removeSelector(selName) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 171

def self.removeSelector(selName)
  remKeys = nil
  if selName.kind_of?(Symbol)
    remKeys = [selName]
  elsif selName.kind_of?(Hash)
    remKeys = selName.keys
  elsif selName.kind_of?(Array)
    remKeys = selName
  else
    raise "MiqVimBroker.removeSelector: selName must be a symbol, hash or array, received #{selName.class}"
  end
  remKeys.each do |rk|
    raise "MiqVimBroker.removeSelector: keys must be symbols, received #{rk.class}" unless rk.kind_of?(Symbol)
  end

  remKeys.each do |rk|
    @@selectorHash.delete(rk)
  end
end

.setSelector(selSpec) ⇒ Object

The setSelector() and removeSelector() class methods, set the Selector specs that will be inherited by all subsequent MiqVimBroker instances.

Should only be called on the server-side.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 149

def self.setSelector(selSpec)
  raise "MiqVimBroker.setSelector: selSpec must be a hash, received #{selSpec.class}" unless selSpec.kind_of?(Hash)
  selSpec.each_key do |k|
    raise "MiqVimBroker.setSelector: selSpec keys must be symbols, received #{k.class}" unless k.kind_of?(Symbol)
  end
  ov = nil
  selSpec.each_value do |v|
    if v.kind_of?(Array)
      v.each do |vv|
        unless vv.kind_of?(String)
          ov = vv
          break
        end
      end
    else
      ov = v unless v.kind_of?(String)
    end
    raise "MiqVimBroker.setSelector: selSpec values must be strings or arrays of strings, received #{ov.class}" unless ov.nil?
  end
  @@selectorHash.merge!(selSpec)
end

.updateDelay ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 304

def self.updateDelay
  @@updateDelay
end

.updateDelay=(val) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 300

def self.updateDelay=(val)
  @@updateDelay = val
end

Instance Method Details

#config_lock ⇒ Object

Can be overridden by BrokerSyncDebug.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 112

def config_lock
  Sync.new
end

#connection_lock ⇒ Object

Can be overridden by BrokerSyncDebug.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 107

def connection_lock
  Sync.new
end

#connectionInfo ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 529

def connectionInfo
  return @broker.connectionInfo if @mode == :client

  # server
  ra = []
  @connectionHash.keys.each do |key|
    @lockHash[key].synchronize(:SH) do
      next if (vim = @connectionHash[key]).nil?
      ra << [vim.server, vim.username]
    end
  end
  ra
end

#connectionKey(server, username) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 361

def connectionKey(server, username)
  self.class.connectionKey(server, username)
end

#connSync(mode, server, username, &block) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 375

def connSync(mode, server, username, &block)
  key = connectionKey(server, username)
  lock = lockHash(key)

  begin
    lock.sync_lock(mode)
    if block.arity < 1
      block.call
    elsif block.arity == 1
      block.call(key)
    elsif block.arity == 2
      block.call(key, @connectionHash[key])
    else
      raise "MiqVimBroker.connSync: unexpected number of block args: #{block.arity}"
    end
  ensure
    lock.sync_unlock
  end
end

#connTrySync(mode, server, username, &block) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 395

def connTrySync(mode, server, username, &block)
  key = connectionKey(server, username)
  lock = lockHash(key)

  begin
    locked = lock.sync_try_lock(mode)
    return unless locked

    if block.arity < 1
      block.call
    elsif block.arity == 1
      block.call(key)
    elsif block.arity == 2
      block.call(key, @connectionHash[key])
    else
      raise "MiqVimBroker.connTrySync: unexpected number of block args: #{block.arity}"
    end
  ensure
    lock.sync_unlock if locked
  end
end

#debugUpdates=(val) ⇒ Object

Instance method changes the debugUpdates value of existing connections.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 269

def debugUpdates=(val)
  return if @mode == :client
  @connectionHash.keys.each do |key|
    @lockHash[key].synchronize(:SH) do
      next if (vim = @connectionHash[key]).nil?
      vim.debugUpdates = val
    end
  end
end

#forceGC ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 575

def forceGC
  if @mode == :client
    @broker.forceGC
    return
  end

  log_prefix = "MiqVimBroker.forceGC"
  $vim_log.info "#{log_prefix}: GC.start...Starting"
  GC.start
  $vim_log.info "#{log_prefix}: GC.start...Complete"
end

#getMiqVim(server, username, password) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 417

def getMiqVim(server, username, password)
  if @mode == :client
    vim = @broker.getMiqVim(server, username, password)
    vim.extend(MiqVimDump)
    vim.extend(MiqVimVdlConnectionMod)
    return(vim)
  else # :server
    connSync(:EX, server, username) do |key, vim|
      if vim
        $vim_log.info "MiqVimBroker.getMiqVim: found connection for #{key}"
        if vim.isAlive?
          $vim_log.info "MiqVimBroker.getMiqVim: returning existing connection for #{key}"
          return(vim)
        end
        $vim_log.info "MiqVimBroker.getMiqVim: existing connection for #{key} not alive"
        removeMiqVimSS(key, vim)
      end
      begin
        vim = DMiqVim.new(server.untaint, username, password, self, @@preLoad, @@debugUpdates, @@notifyMethod, @cacheScope, @@maxWait, @@maxObjects)
        vim.updateDelay = @@updateDelay if @@updateDelay
        vim.setSelector(@selectorHash) unless @selectorHash.empty?
        $vim_log.info "MiqVimBroker.getMiqVim: returning new connection for #{key}"
        @connectionHash[key] = vim
        return(vim)
      rescue Exception => err
        $vim_log.error "MiqVimBroker.getMiqVim: failed to create new connection for #{key}"
        $vim_log.error "#{err.class}: #{err}"
        if $vim_log.debug?
          $vim_log.debug "Stack trace START"
          $vim_log.debug err.backtrace.join("\n")
          $vim_log.debug "Stack trace END"
        end
        raise err
      end
    end
  end # :server
end

#lockHash(key) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 365

def lockHash(key)
  @connectionLock.synchronize(:EX) do
    raise "MiqVimBroker is shutting down" if @shuttingDown
    #
    # Once set, @lockHash[key] doesn't change.
    #
    @lockHash[key] ||= sync_for_lock_hash(key)
  end
end

#logStatus ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 543

def logStatus
  if @mode == :client
    @broker.logStatus
    return
  end

  return unless $vim_log.info?

  # server
  $vim_log.info "MiqVimBroker status start"
  $vim_log.info "\tMiqVimBroker: Threads = #{Thread.list.length}"

  $vim_log.info "\tMiqVimBroker client object counts by type:"
  objectCounts.each { |t, c| $vim_log.info "\t\t#{t}: #{c}" }
  $vim_log.info "\tEnd MiqVimBroker client object counts by type"

  brokerCacheSz = 0

  $vim_log.info "\tMiqVimBroker open connections: #{@connectionHash.keys.length}"
  @connectionHash.keys.each do |k|
    @lockHash[k].synchronize(:SH) do
      next if (vim = @connectionHash[k]).nil?
      $vim_log.info "\t\tMiqVimBroker connection #{k} cache counts:"
      # vim.logCacheCounts("\t\t\t")
      brokerCacheSz += vim.cacheStats("\t\t\t#{k} - ")
      $vim_log.info "\t\tEnd MiqVimBroker connection #{k} cache counts"
    end
  end
  $vim_log.info "\tEnd MiqVimBroker open connections"
  $vim_log.info "MiqVimBroker status end - Total broker cache size = #{brokerCacheSz}"
end

#notifyMethod=(val) ⇒ Object

Instance method changes the notifyMethod value of existing connections.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 290

def notifyMethod=(val)
  return if @mode == :client
  @connectionHash.keys.each do |key|
    @lockHash[key].synchronize(:SH) do
      next if (vim = @connectionHash[key]).nil?
      vim.notifyMethod = val
    end
  end
end

#objectCounts ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 347

def objectCounts
  if @mode == :client
    @broker.objectCounts
  else
    $miqBrokerObjRegistryLock.synchronize(:SH) do
      return $miqBrokerObjCounts.dup
    end
  end
end

#releaseSession(sessionId) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 337

def releaseSession(sessionId)
  if @mode == :client
    $vim_log.info "Client releaseSession: #{sessionId}"
    @broker.releaseSession(sessionId)
  else
    $vim_log.info "Server releaseSession: #{sessionId}"
    $miqBrokerObjRegistry[sessionId].dup.each(&:release)
  end
end

#removeMiqVim(server, username) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 455

def removeMiqVim(server, username)
  if @mode == :client
    @broker.removeMiqVim(server, username)
    return
  end

  # server
  log_prefix = "MiqVimBroker.removeMiqVim"
  $vim_log.info "#{log_prefix}: client request to remove connection (#{server}, #{username})...Starting"
  connSync(:EX, server, username) do |key, vim|
    removeMiqVimSS(key, vim)
  end
  $vim_log.info "#{log_prefix}: client request to remove connection (#{server}, #{username})...Comolete"
end

#removeMiqVimSS(key, vim) ⇒ Object

Server-side removal of VIM connection. Must be called within a connSync(:EX, server, username) context.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 474

def removeMiqVimSS(key, vim)
  log_prefix = "MiqVimBroker.removeMiqVimSS"
  $vim_log.info "#{log_prefix}: removing connection for #{key}...Starting"

  if @shuttingDown
    $vim_log.info "#{log_prefix}: not removing connection for #{key} - broker shutting down"
    return
  end
  if vim.nil?
    $vim_log.info "#{log_prefix}: not removing connection for #{key} - connection not found"
    return
  end
  if vim.connectionRemoved?
    $vim_log.info "#{log_prefix}: not removing connection for #{key} - connection already removed"
    return
  end

  vim.shutdownConnection
  $miqBrokerObjRegistryByConn[key].dup.each(&:release)
  @connectionHash.delete(key)
  vim.connectionRemoved

  $vim_log.info "#{log_prefix}: removing connection for #{key}...Complete"
end

#removeSelector(selName) ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 224

def removeSelector(selName)
  if @mode == :client
    return @broker.removeSelector(selName)
  end

  remKeys = nil
  if selName.kind_of?(Symbol)
    remKeys = [selName]
  elsif selName.kind_of?(Hash)
    remKeys = selName.keys
  elsif selName.kind_of?(Array)
    remKeys = selName
  else
    raise "removeSelector: selName must be a symbol, hash or array, received #{selName.class}"
  end
  remKeys.each do |rk|
    raise "removeSelector: keys must be symbols, received #{rk.class}" unless rk.kind_of?(Symbol)
  end

  @configLock.synchronize(:EX) do
    remKeys.each do |rk|
      @selectorHash.delete(rk)
    end
  end
end

#serverAlive? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 518

def serverAlive?
  if @mode == :client
    begin
      return @broker.serverAlive?
    rescue DRb::DRbConnError
      return false
    end
  end
  true
end

#setSelector(selSpec) ⇒ Object

The setSelector() and removeSelector() instance methods, set the Selector specs that will be inherited by all subsequent connections.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 195

def setSelector(selSpec)
  if @mode == :client
    return @broker.setSelector(selSpec)
  end

  raise "setSelector: selSpec must be a hash, received #{selSpec.class}" unless selSpec.kind_of?(Hash)
  selSpec.each_key do |k|
    raise "setSelector: selSpec keys must be symbols, received #{k.class}" unless k.kind_of?(Symbol)
  end
  ov = nil
  selSpec.each_value do |v|
    if v.kind_of?(Array)
      v.each do |vv|
        unless vv.kind_of?(String)
          ov = vv
          break
        end
      end
    else
      ov = v unless v.kind_of?(String)
    end
    raise "setSelector: selSpec values must be strings or arrays of strings, received #{ov.class}" unless ov.nil?
  end

  @configLock.synchronize(:EX) do
    @selectorHash.merge!(selSpec)
  end
end

#shutdown ⇒ Object 



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 499

def shutdown
  raise "MiqVimBroker: shutdown cannot be called from client" if @mode == :client
  log_prefix = "MiqVimBroker.shutdown"
  $vim_log.info "#{log_prefix}...Starting"
  @connectionLock.synchronize(:EX) do
    @shuttingDown = true
  end
  @connectionHash.keys.each do |id|
    @lockHash[id].synchronize(:EX) do
      next if (vim = @connectionHash[id]).nil?
      vim.shutdownConnection
      @connectionHash.delete(id)
      vim.connectionRemoved
    end
  end
  DRb.stop_service
  $vim_log.info "#{log_prefix}...Complete"
end

#sync_for_drb ⇒ Object

Can be overridden by BrokerSyncDebug.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 127

def sync_for_drb
  Sync.new
end

#sync_for_drb_drbconn ⇒ Object

Can be overridden by BrokerSyncDebug.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 122

def sync_for_drb_drbconn
  Sync.new
end

#sync_for_lock_hash(_key) ⇒ Object

Can be overridden by BrokerSyncDebug.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 117

def sync_for_lock_hash(_key)
  Sync.new
end

#updateDelay=(val) ⇒ Object

Instance method changes the updateDelay value of existing connections.



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# File 'lib/VMwareWebService/MiqVimBroker.rb', line 311

def updateDelay=(val)
  return if @mode == :client
  @connectionHash.keys.each do |key|
    @lockHash[key].synchronize(:SH) do
      next if (vim = @connectionHash[key]).nil?
      vim.updateDelay = val
    end
  end
end