Class: Chef::Provider::MachineBatch

Inherits:
LWRPBase
  • Object
show all
Defined in:
lib/chef/provider/machine_batch.rb

Instance Method Summary collapse

Instance Method Details

#action_handler ⇒ Object 



13
14
15
 
# File 'lib/chef/provider/machine_batch.rb', line 13

def action_handler
  @action_handler ||= Provisioning::ChefProviderActionHandler.new(self)
end

#by_current_driver ⇒ Object 



145
146
147
148
149
150
151
152
153
154
155
156
157
 
# File 'lib/chef/provider/machine_batch.rb', line 145

def by_current_driver
  result = {}
  drivers = {}
  @machines.each do |m|
    if m[:spec].driver_url
      drivers[m[:spec].driver_url] ||= run_context.chef_provisioning.driver_for(m[:spec].driver_url)
      driver = drivers[m[:spec].driver_url]
      result[driver] ||= {}
      result[driver][m[:spec]] = m[:machine_options].call(driver)
    end
  end
  result
end

#by_id ⇒ Object 



109
110
111
 
# File 'lib/chef/provider/machine_batch.rb', line 109

def by_id
  @by_id ||= @machines.inject({}) { |hash,m| hash[m[:spec].id] = m; hash }
end

#by_new_driver ⇒ Object 



120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
 
# File 'lib/chef/provider/machine_batch.rb', line 120

def by_new_driver
  result = {}
  drivers = {}
  @machines.each do |m|
    if m[:desired_driver]
      drivers[m[:desired_driver]] ||= run_context.chef_provisioning.driver_for(m[:desired_driver])
      driver = drivers[m[:desired_driver]]
      # Check whether the current driver is same or different; we disallow
      # moving a machine from one place to another.
      if m[:spec].driver_url
        drivers[m[:spec].driver_url] ||= run_context.chef_provisioning.driver_for(m[:spec].driver_url)
        current_driver = drivers[m[:spec].driver_url]
        if driver.driver_url != current_driver.driver_url
          raise "Cannot move '#{m[:spec].name}' from #{current_driver.driver_url} to #{driver.driver_url}: machine moving is not supported.  Destroy and recreate."
        end
      end
      result[driver] ||= {}
      result[driver][m[:spec]] = m[:machine_options].call(driver)
    else
      raise "No driver specified for #{m[:spec].name}"
    end
  end
  result
end

#load_current_resource ⇒ Object 



159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
 
# File 'lib/chef/provider/machine_batch.rb', line 159

def load_current_resource
  # Load nodes in parallel
  @machines = parallel_do(new_resource.machines) do |machine|
    if machine.is_a?(Chef::Resource::Machine)
      machine_resource = machine
      provider = Chef::Provider::Machine.new(machine_resource, machine_resource.run_context)
      provider.load_current_resource
      {
        :resource => machine_resource,
        :spec => provider.machine_spec,
        :desired_driver => machine_resource.driver,
        :files => machine_resource.files,
        :machine_options => proc { |driver| provider.machine_options(driver) },
        :action_handler => Provisioning::AddPrefixActionHandler.new(action_handler, "[#{machine_resource.name}] ")
      }
    elsif machine.is_a?(Provisioning::MachineSpec)
      machine_spec = machine
      {
        :spec => machine_spec,
        :desired_driver => new_resource.driver,
        :files => new_resource.files,
        :machine_options => proc { |driver| machine_options(driver) },
        :action_handler => Provisioning::AddPrefixActionHandler.new(action_handler, "[#{machine_spec.name}] ")
      }
    else
      name = machine
      machine_spec = Provisioning::ChefMachineSpec.get(name, new_resource.chef_server) ||
                     Provisioning::ChefMachineSpec.empty(name, new_resource.chef_server)
      {
        :spec => machine_spec,
        :desired_driver => new_resource.driver,
        :files => new_resource.files,
        :machine_options => proc { |driver| machine_options(driver) },
        :action_handler => Provisioning::AddPrefixActionHandler.new(action_handler, "[#{name}] ")
      }
    end
  end.to_a
end

#machine_options(driver) ⇒ Object 



198
199
200
201
202
203
204
 
# File 'lib/chef/provider/machine_batch.rb', line 198

def machine_options(driver)
  result = { :convergence_options => { :chef_server => new_resource.chef_server } }
  result = Chef::Mixin::DeepMerge.hash_only_merge(result, run_context.chef_provisioning.config[:machine_options]) if run_context.chef_provisioning.config[:machine_options]
  result = Chef::Mixin::DeepMerge.hash_only_merge(result, driver.config[:machine_options]) if driver.config && driver.config[:machine_options]
  result = Chef::Mixin::DeepMerge.hash_only_merge(result, new_resource.machine_options)
  result
end

#parallel_do(enum, options = {}, &block) ⇒ Object

TODO in many of these cases, the order of the results only matters because you want to match it up with the input. Make a parallelize method that doesn’t care about order and spits back results as quickly as possible.



116
117
118
 
# File 'lib/chef/provider/machine_batch.rb', line 116

def parallel_do(enum, options = {}, &block)
  parallelizer.parallelize(enum, options, &block).to_a
end

#parallelizer ⇒ Object 



23
24
25
 
# File 'lib/chef/provider/machine_batch.rb', line 23

def parallelizer
  @parallelizer ||= Chef::ChefFS::Parallelizer.new(new_resource.max_simultaneous || 100)
end

#whyrun_supported? ⇒ Boolean

Returns:

  • (Boolean) 


19
20
21
 
# File 'lib/chef/provider/machine_batch.rb', line 19

def whyrun_supported?
  true
end

#with_ready_machines ⇒ Object 



91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
 
# File 'lib/chef/provider/machine_batch.rb', line 91

def with_ready_machines
  action_allocate
  parallel_do(by_new_driver) do |driver, specs_and_options|
    driver.ready_machines(action_handler, specs_and_options, parallelizer) do |machine|
      machine.machine_spec.save(action_handler)

      m = by_id[machine.machine_spec.id]

      m[:machine] = machine
      begin
        yield m if block_given?
      ensure
        machine.disconnect
      end
    end
  end
end