Class: Puppet::Provider::SwiftRingBuilder

Inherits:
Puppet::Provider
  • Object
show all
Defined in:
lib/puppet/provider/swift_ring_builder.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.instances ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 3

def self.instances
  # TODO iterate through the databases
  # and add the database that we used a property
  ring.keys.collect do |name|
    new(:name => name)
  end
end

Instance Method Details

#address_string(address) ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 11

def address_string(address)
  ip = IPAddr.new(address)
  if ip.ipv6?
    '[' + ip.to_s + ']'
  else
    ip.to_s
  end
end

#balance ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 160

def balance
  ring[resource[:name]][:balance]
end

#balance=(balance) ⇒ Object

Raises:

  • (Puppet::Error) 


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# File 'lib/puppet/provider/swift_ring_builder.rb', line 164

def balance=(balance)
  raise(Puppet::Error, "Cannot set balance, it is set by rebalancing")
end

#builder_file_path(policy_index) ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 64

def builder_file_path(policy_index)
  self.class.builder_file_path(policy_index)
end

#create ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 72

def create
  [:zone, :weight].each do |param|
    raise(Puppet::Error, "#{param} is required") unless resource[param]
  end
  if :region == 'none'
    # Prior to Swift 1.8.0, regions did not exist.
    swift_ring_builder(
      builder_file_path(policy_index),
      'add',
      "z#{resource[:zone]}-#{device_path}_#{resource[:meta]}",
      resource[:weight]
    )
  else
    # Swift 1.8+
    # Region defaults to 1 if unspecified
    resource[:region] ||= 1
    swift_ring_builder(
      builder_file_path(policy_index),
      'add',
      "r#{resource[:region]}z#{resource[:zone]}-#{device_path}_#{resource[:meta]}",
      resource[:weight]
    )
  end
end

#device_path ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 97

def device_path
  if resource[:name].split(/^\d+:/)[1].nil?
    return resource[:name]
  else
    return resource[:name].split(/^\d+:/)[1]
  end
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/provider/swift_ring_builder.rb', line 68

def exists?
  ring[resource[:name]]
end

#id ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 113

def id
  ring[resource[:name]][:id]
end

#id=(id) ⇒ Object

Raises:

  • (Puppet::Error) 


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# File 'lib/puppet/provider/swift_ring_builder.rb', line 117

def id=(id)
  raise(Puppet::Error, "Cannot assign id, it is immutable")
end

#lookup_ring ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 20

def lookup_ring
  object_hash = {}
  if File.exists?(builder_file_path(policy_index))
    if rows = swift_ring_builder(builder_file_path(policy_index)).split("\n")
      while row = rows.shift do
        if row.start_with?('Devices:')
          break
        end
      end
      rows.each do |row|
        # Swift 2.9.1+ output example:
        # /etc/swift/object.builder, build version 1
        # 262144 partitions, 1.000000 replicas, 1 regions, 1 zones, 1 devices, 0.00 balance, 0.00 dispersion
        # The minimum number of hours before a partition can be reassigned is 1
        # The overload factor is 0.00% (0.000000)
        # Ring file /etc/swift/object.ring.gz is up-to-date
        # Devices:    id  region  zone      ip address:port  replication ip:replication port      name weight partitions balance meta
        #              0       1     2       127.0.0.1:6021       127.0.0.1:6021                     2   1.00     262144    0.00
        if row =~ /^\s*(\d+)\s+(\d+)\s+(\d+)\s+(\S+):(\d+)\s+\S+:\d+\s+(\S+)\s+(\d+\.\d+)\s+(\d+)\s*((-|\s-?)?\d+\.\d+)\s*(\S*)/
          address = address_string("#{$4}")
          if !policy_index.nil?
            policy = "#{policy_index}:"
          else
            policy = ''
          end
          object_hash["#{policy}#{address}:#{$5}/#{$6}"] = {
            :id           => $1,
            :region       => $2,
            :zone         => $3,
            :weight       => $7,
            :partitions   => $8,
            :balance      => $9,
            :meta         => $11,
            :policy_index => "#{policy_index}"
          }
        else
          Puppet.warning("Unexpected line: #{row}")
        end
      end
    end
  end
  object_hash
end

#meta ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 168

def meta
  ring[resource[:name]][:meta]
end

#meta=(meta) ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 172

def meta=(meta)
  swift_ring_builder(
    builder_file_path(policy_index),
    'set_info',
    "d#{ring[device_path][:id]}",
    "_#{resource[:meta]}"
  )
end

#partitions ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 152

def partitions
  ring[resource[:name]][:partitions]
end

#partitions=(part) ⇒ Object

Raises:

  • (Puppet::Error) 


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# File 'lib/puppet/provider/swift_ring_builder.rb', line 156

def partitions=(part)
  raise(Puppet::Error, "Cannot set partitions, it is set by rebalancing")
end

#policy_index ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 105

def policy_index
  if resource[:name].split(/^\d+:/)[1].nil?
    return nil
  else
    Integer("#{resource[:name].match(/^\d+/)}")
  end
end

#region ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 121

def region
  ring[resource[:name]][:region]
end

#region=(region) ⇒ Object

Raises:

  • (Puppet::Error) 


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# File 'lib/puppet/provider/swift_ring_builder.rb', line 125

def region=(region)
  raise(Puppet::Error, "Changing the region of a device is not yet supported.")
end

#weight ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 137

def weight
  ring[resource[:name]][:weight]
  # get the weight
end

#weight=(weight) ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 142

def weight=(weight)
  swift_ring_builder(
    builder_file_path(policy_index),
    'set_weight',
    "d#{ring[device_path][:id]}",
    resource[:weight]
  )
  # requires a rebalance
end

#zone ⇒ Object 



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# File 'lib/puppet/provider/swift_ring_builder.rb', line 129

def zone
  ring[resource[:name]][:zone]
end

#zone=(zone) ⇒ Object

Raises:

  • (Puppet::Error) 


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# File 'lib/puppet/provider/swift_ring_builder.rb', line 133

def zone=(zone)
  raise(Puppet::Error, "Changing the zone of a device is not yet supported.")
end