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 



3
4
5
6
7
8
9
 
# 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

.lookup_ring ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 12

def self.lookup_ring
  object_hash = {}
  if File.exists?(builder_file_path)
    if rows = swift_ring_builder(builder_file_path).split("\n")[4..-1]
      rows.each do |row|
         # Swift 1.7+ output example:
         # Devices:    id  region  zone      ip address  port      name weight partitions balance meta
         #              0     1     2       127.0.0.1  6022         2   1.00     262144   0.00
         #              0     1     3  192.168.101.15  6002         1   1.00     262144   -100.00
         #
         # Swift 1.8.0 output example:
         # Devices:    id  region  zone      ip address  port      name weight partitions balance meta
         #              2     1     2  192.168.101.14  6002         1   1.00     262144 200.00  m2
         #              0     1     3  192.168.101.15  6002         1   1.00     262144-100.00  m2
         #
         # Swift 1.8+ output example:
         # 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
        # Swift 1.8+ output example:
        if row =~ /^\s*(\d+)\s+(\d+)\s+(\d+)\s+(\S+)\s+(\d+)\s+\S+\s+\d+\s+(\S+)\s+(\d+\.\d+)\s+(\d+)\s*((-|\s-?)?\d+\.\d+)\s*(\S*)/

          object_hash["#{$4}:#{$5}/#{$6}"] = {
            :id          => $1,
            :region      => $2,
            :zone        => $3,
            :weight      => $7,
            :partitions  => $8,
            :balance     => $9,
            :meta        => $11
          }

        # Swift 1.8.0 output example:
        elsif row =~ /^\s*(\d+)\s+(\d+)\s+(\d+)\s+(\S+)\s+(\d+)\s+(\S+)\s+(\d+\.\d+)\s+(\d+)\s*((-|\s-?)?\d+\.\d+)\s*(\S*)/

          object_hash["#{$4}:#{$5}/#{$6}"] = {
            :id          => $1,
            :region      => $2,
            :zone        => $3,
            :weight      => $7,
            :partitions  => $8,
            :balance     => $9,
            :meta        => $11
          }
         # This regex is for older swift versions
        elsif row =~ /^\s+(\d+)\s+(\d+)\s+(\S+)\s+(\d+)\s+(\S+)\s+(\d+\.\d+)\s+(\d+)\s+(-?\d+\.\d+)\s+(\S*)$/

          object_hash["#{$3}:#{$4}/#{$5}"] = {
            :id          => $1,
            :region      => 'none',
            :zone        => $2,
            :weight      => $6,
            :partitions  => $7,
            :balance     => $8,
            :meta        => $9
          }

        else
          Puppet.warning("Unexpected line: #{row}")
        end
      end
    end
  end
  object_hash
end

Instance Method Details

#balance ⇒ Object 



163
164
165
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 163

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

#balance=(balance) ⇒ Object

Raises:

  • (Puppet::Error) 


167
168
169
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 167

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

#builder_file_path ⇒ Object 



81
82
83
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 81

def builder_file_path
  self.class.builder_file_path
end

#create ⇒ Object 



89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 89

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,
      'add',
      "z#{resource[:zone]}-#{resource[:name]}",
      resource[:weight]
    )
  else
    # Swift 1.8+
    # Region defaults to 1 if unspecified
    resource[:region] ||= 1
    swift_ring_builder(
      builder_file_path,
      'add',
      "r#{resource[:region]}z#{resource[:zone]}-#{resource[:name]}",
      resource[:weight]
    )
  end
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


85
86
87
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 85

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

#id ⇒ Object 



115
116
117
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 115

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

#id=(id) ⇒ Object

Raises:

  • (Puppet::Error) 


119
120
121
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 119

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

#meta ⇒ Object 



171
172
173
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 171

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

#meta=(meta) ⇒ Object

Raises:

  • (Puppet::Error) 


175
176
177
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 175

def meta=(meta)
  raise(Puppet::Error, "Cannot set meta, I am not sure if it makes sense or what it is for")
end

#partitions ⇒ Object 



155
156
157
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 155

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

#partitions=(part) ⇒ Object

Raises:

  • (Puppet::Error) 


159
160
161
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 159

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

#region ⇒ Object 



123
124
125
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 123

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

#region=(region) ⇒ Object

Raises:

  • (Puppet::Error) 


127
128
129
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 127

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

#ring ⇒ Object 



77
78
79
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 77

def ring
  self.class.ring
end

#weight ⇒ Object 



140
141
142
143
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 140

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

#weight=(weight) ⇒ Object 



145
146
147
148
149
150
151
152
153
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 145

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

#zone ⇒ Object 



131
132
133
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 131

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

#zone=(zone) ⇒ Object

TODO - is updating the zone supported?



136
137
138
 
# File 'lib/puppet/provider/swift_ring_builder.rb', line 136

def zone=(zone)
  Puppet.warning('Setting zone is not yet supported, I am not even sure if it is supported')
end