Module: BigBang::ExplodeCmd

Included in:
Universe
Defined in:
lib/bigbang/explode.rb

Instance Method Summary collapse

Instance Method Details

#allocate_addresses ⇒ Object 



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
 
# File 'lib/bigbang/explode.rb', line 17

def allocate_addresses
  runs = @runs.find_all { |r| r.elastic_ip == true }
  if runs.empty?
    puts "no need to allocate elastic ips"
    return []
  end
  free_ips = provider.free_eips
  ninstances = runs.inject(0) { |m,r| m += r.instances_count }
  toalloc = ninstances 
  blacklist = free_ips
  if free_ips.size > 0
    n = nil
    if free_ips.size >= ninstances
      n = ninstances
    else
      n = free_ips.size
    end
    confirm("Use #{n} of your #{free_ips.size} free eips?") do
      blacklist = []
      toalloc -= n
    end
  end
  puts "need to alloc: #{toalloc}"
  1.upto(toalloc) do |i|
    puts "allocating eip address #{i}"
    provider.ec2.allocate_address
  end

  addrs = wait_for_eips(free_ips.size + toalloc)
  avail_ips = addrs.collect { |a| a.publicIp }.to_set
  black_ips = blacklist.collect { |a| a.publicIp }.to_set
  (avail_ips - black_ips).to_a[0,ninstances]
end

#assign_addresses(addrs) ⇒ Object 



106
107
108
109
110
111
112
113
114
115
116
117
118
 
# File 'lib/bigbang/explode.rb', line 106

def assign_addresses(addrs) 
  @runs.each do |r|
    r.ec2_instances.each do |instance|
      addr = addrs.pop
      puts "associating address #{addr} " + 
        "to instance #{instance.instanceId}"
      provider.ec2.associate_address(
        :instance_id => instance.instanceId,
        :public_ip => addr)
      r.assigned_ips[instance.instanceId] = addr
    end
  end
end

#create_dns_entries(universe_name) ⇒ Object 



129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
 
# File 'lib/bigbang/explode.rb', line 129

def create_dns_entries(universe_name)
  instances_map = get_instances_map
  @runs.each do |r|
    addsufix = false
    if r.is_a?(ClusterRun)
      addsufix = true
    end

    domains = [r.domain]
    if r.domain.is_a?(Array)
      domains = r.domain
    end

    sufix = 0
    r.ec2_instances.each do |instance_id|
      instance = instances_map[instance_id]
      domains.each do |domain|
        addr = r.assigned_ips[instance.instanceId]
        # use the elastic ip
        if addr.nil?
          addr = instance.ipAddress
        end

        if addsufix
          domain = "#{domain}#{sufix}"
        end
        create_dns_entry_for(instance, universe_name, domain, addr, r.wildcard_domain)
      end
      sufix += 1
    end
  end
end

#create_dns_entry_for(instance, universe_name, domain, addr, wildcard) ⇒ Object 



120
121
122
123
124
125
126
127
 
# File 'lib/bigbang/explode.rb', line 120

def create_dns_entry_for(instance, universe_name, domain, addr, wildcard)
  domain = "#{universe_name}.#{domain}"
  puts "creating domain #{domain}.#{@config.domain} to #{addr}"
  provider.create_dns(domain, addr)
  if wildcard == true
    provider.create_dns("*.#{domain}", addr)
  end
end

#explode(name) ⇒ Object 



162
163
164
165
166
167
168
169
170
171
172
 
# File 'lib/bigbang/explode.rb', line 162

def explode(name)
  free_eips = allocate_addresses
  run_instances(name)
  unless free_eips.empty?
    confirm("Will assign the following ips:\n" +
      "#{free_eips.join("\n")}\nConfirm") do
      assign_addresses(free_eips)
    end
  end
  create_dns_entries(name)
end

#run_instance(instance, userdata, zone, size) ⇒ Object 



73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'lib/bigbang/explode.rb', line 73

def run_instance(instance, userdata, zone, size)
  puts "launching #{size} instance(s) on availability zone '#{zone}'"
  provider.ec2.run_instances(
      :image_id => instance.ami,
      :key_name => instance.key_name,
      :instance_type => instance.type,
      :user_data => userdata,
      :availability_zone => zone,
      :min_count => size,
      :max_count => size
  )
end

#run_instances(name) ⇒ Object 



86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
 
# File 'lib/bigbang/explode.rb', line 86

def run_instances(name)
  instances = []
  gen = Ec2BootstrapGenerator.new
  @runs.each do |r|
    instance = r.instance
    userdata = Base64.encode64(gen.generate_from_hash(
      "bootstrap-repo" => instance.bootstrap_repo
    ))
    r.zones.each_pair do |zone,size|
      res = run_instance(instance, userdata, zone, size)
      res.instancesSet.item.each do |i|
        instances << i
        r.ec2_instances << i.instanceId
        tag_instance(instance, i, name)
      end
    end
  end
  wait_for_running(instances)
end

#tag_instance(instance, ec2_instance, name) ⇒ Object 



65
66
67
68
69
70
71
 
# File 'lib/bigbang/explode.rb', line 65

def tag_instance(instance, ec2_instance, name)
  provider.ec2.create_tags(:resource_id => ec2_instance.instanceId,
      :tag => [
          { 'bb_name' => instance.name },
          { 'bb_universe' => name},
      ])
end

#wait_for_eips(expected) ⇒ Object 



3
4
5
6
7
8
9
10
11
12
13
14
15
 
# File 'lib/bigbang/explode.rb', line 3

def wait_for_eips(expected)
  print "waiting for eips to be allocated"
  STDOUT.flush
  addrs = provider.free_eips
  while(addrs.size < expected)
    sleep(1)
    print "."
    STDOUT.flush
    addrs = provider.free_eips
  end
  puts
  addrs
end

#wait_for_running(instances) ⇒ Object 



53
54
55
56
57
58
59
60
61
62
63
 
# File 'lib/bigbang/explode.rb', line 53

def wait_for_running(instances)
  ids = instances.collect { |i| i.instanceId }.to_set
  print "Waiting for all instances to be in running state. "
  STDOUT.flush
  while running_instances_count(ids) < instances.size
    print "."
    sleep(5)
    STDOUT.flush
  end
  puts
end