Class: Kytoon::Providers::Openstack::ServerGroup

Inherits:
Object
  • Object
show all
Defined in:
lib/kytoon/providers/openstack/server_group.rb

Overview

Openstack server group provider.

Constant Summary collapse

CONFIG_FILE = 
KYTOON_PROJECT + File::SEPARATOR + "config" + File::SEPARATOR + "server_group.json"
@@connection = 
nil
@@data_dir = 
File.join(KYTOON_PROJECT, "tmp", "openstack")

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ ServerGroup

Returns a new instance of ServerGroup.



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 31

def initialize(options={})
@id = options[:id] || Time.now.to_f
@name = options[:name]
@use_security_groups = options[:use_security_groups]
@servers=[]
end

Instance Attribute Details

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 27

def id
  @id
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 28

def name
  @name
end

#use_security_groups ⇒ Object

Returns the value of attribute use_security_groups.



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 29

def use_security_groups
  @use_security_groups
end

Class Method Details

.assign_floating_ip(server_id) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 319

def self.assign_floating_ip(server_id)

  conn = self.init_connection

  data = conn.allocate_address.body
  address_id = data['floating_ip']['id']
  address_ip = data['floating_ip']['ip']

  configs = Util.load_configs
  network_name = configs['openstack_network_name'] || 'public'

  # wait for instance to obtain fixed ip
  1.upto(60) do
    server = conn.servers.get(server_id)
    if server.addresses and server.addresses[network_name] and server.addresses[network_name].detect {|a| a['version'] == self.default_ip_type} then
      break
    end
  end

  conn.associate_address(server_id, address_ip).body
  [address_id, address_ip]

end

.create(sg) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 146

def self.create(sg)

  hosts_file_data = "127.0.0.1\tlocalhost localhost.localdomain\n"

  build_timeout = (Util.load_configs['openstack_build_timeout'] || 60).to_i

  base_key_name=File.join(@@data_dir, "#{sg.id}_id_rsa")
  Kytoon::Util.generate_ssh_keypair(base_key_name)
  private_ssh_key=IO.read(base_key_name)
  public_ssh_key=IO.read(base_key_name + ".pub")

  sg.servers.each do |server|
    server_id = create_instance(sg.id, server['hostname'], server['image_ref'], server['flavor_ref'], server['keypair_name']).id
    server['id'] = server_id

    if server['assign_floating_ip'] == 'true' then
      floating_data = assign_floating_ip(server_id)
      server['floating_ip_id'] = floating_data[0]
      server['floating_ip'] = floating_data[1]
    end

    sg.cache_to_disk
  end

  begin
    Timeout::timeout(build_timeout) do
      ips = get_server_ips
      sg.servers.each do |server|
        server_ip = ips[server['id']]
        if server['assign_floating_ip'] == 'true' then
          server['ip_address'] = server['floating_ip']
        else
          server['ip_address'] = server_ip
        end
        sg.cache_to_disk
        hosts_file_data += "#{server_ip}\t#{server['hostname']}\n"
      end
    end
  rescue Timeout::Error => te
    raise KytoonException, "Timeout building server group."
  end

  puts "Copying hosts files..."

gateway_ssh_config = %{
mkdir -p .ssh
cat > .ssh/id_rsa <<-EOF_CAT
#{private_ssh_key}
EOF_CAT
chmod 600 .ssh/id_rsa
cat > .ssh/id_rsa.pub <<-EOF_CAT
#{public_ssh_key}
EOF_CAT
chmod 644 .ssh/id_rsa.pub
cat > .ssh/config <<-EOF_CAT
StrictHostKeyChecking no
EOF_CAT
chmod 600 .ssh/config
}

node_ssh_config= %{
mkdir -p .ssh
cat >> .ssh/authorized_keys <<-EOF_CAT
#{public_ssh_key}\n
EOF_CAT
chmod 600 .ssh/authorized_keys
}

  # now that we have IP info copy hosts files into the servers
  sg.servers.each do |server|
    ping_test(server['ip_address'])
    Kytoon::Util.remote_exec(%{
cat > /etc/hosts <<-EOF_CAT
#{hosts_file_data}
EOF_CAT
hostname "#{server['hostname']}"
if [ -f /etc/sysconfig/network ]; then
sed -e "s|^HOSTNAME.*|HOSTNAME=#{server['hostname']}|" -i /etc/sysconfig/network
fi
#{server['gateway'] == 'true' ? gateway_ssh_config : ""}
#{node_ssh_config}
    }, server['ip_address'], 3) do |ok, out|
      if not ok
        puts out
        raise KytoonException, "Failed to copy host file to instance #{server['hostname']}."
      end
    end
  end

  sg

end

.create_instance(group_id, hostname, image_ref, flavor_ref, keypair_name) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 291

def self.create_instance(group_id, hostname, image_ref, flavor_ref, keypair_name)

  configs = Util.load_configs
  conn = self.init_connection

  options = {
    :name => "#{group_id}_#{hostname}",
    :image_ref => image_ref,
    :flavor_ref => flavor_ref}

  keypair_name = configs['openstack_keypair_name'] if keypair_name.nil?
  security_groups = configs['openstack_security_groups']
  if not security_groups.nil? and not security_groups.empty? then
    options.store(:security_groups, security_groups)
  end
  if not keypair_name.nil? and not keypair_name.empty? then
    options.store(:key_name, keypair_name)
  else
    options.store(:personality, [
      {'path' => "/root/.ssh/authorized_keys",
       'contents' => IO.read(Util.public_key_path)}])
  end

  server = conn.servers.create(options)
  server

end

.data_dir ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 17

def self.data_dir
  @@data_dir
end

.data_dir=(dir) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 21

def self.data_dir=(dir)
  @@data_dir=dir
end

.default_ip_type ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 366

def self.default_ip_type()
  ip_type = Util.load_configs['openstack_ip_type'] || 4
  ip_type.to_i
end

.destroy_instance(uuid) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 419

def self.destroy_instance(uuid)
  begin
    conn = self.init_connection
    server = conn.servers.get(uuid)
    if server then
      server.destroy
    else
      puts "Server #{uuid} no longer exists."
    end
  rescue Exception => e
    puts "Error deleting server: #{e.message}"
  end
end

.from_json(json) ⇒ Object

generate a Server Group XML from server_group.json



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 51

def self.from_json(json)

  json_hash=JSON.parse(json)

  sg=ServerGroup.new(
    :id => json_hash["id"],
    :name => json_hash["name"],
    :use_security_groups => json_hash["use_security_groups"]
  )
  json_hash["servers"].each do |server_hash|

    sg.servers << {
      'id' => server_hash['id'],
      'hostname' => server_hash['hostname'],
      'image_ref' => server_hash['image_ref'],
      'flavor_ref' => server_hash['flavor_ref'],
      'keypair_name' => server_hash['keypair_name'],
      'floating_ip' => server_hash['floating_ip'],
      'gateway' => server_hash['gateway'] || "false",
      'assign_floating_ip' => server_hash['assign_floating_ip'] || "false",
      'floating_ip' => server_hash['floating_ip'] || nil,
      'floating_ip_id' => server_hash['floating_ip_id'] || nil,
      'ip_address' => server_hash['ip_address']
    }
  end
  return sg
end

.get(options = {}) ⇒ Object

Raises:



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 239

def self.get(options={})
  id = options[:id]
  if id.nil? then
    group=ServerGroup.most_recent
    raise NoServerGroupExists, "No server group files exist." if group.nil?
    id=group.id
  end

  out_file=File.join(@@data_dir, "#{id}.json")
  raise NoServerGroupExists, "No server group files exist." if not File.exists?(out_file)
  ServerGroup.from_json(IO.read(out_file))
end

.get_server_ips ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 371

def self.get_server_ips()

  ips = {}
  configs = Util.load_configs

  network_name = configs['openstack_network_name'] || 'public'

  conn = self.init_connection
  all_active = false
  until all_active do
    all_active = true
    conn.servers.each do |server|
      if ips[server.id].nil? then
        server = conn.servers.get(server.id)
        if server.state == 'ACTIVE' then
          addresses = server.addresses[network_name].select {|a| a['version'] == self.default_ip_type}
          ips[server.id] = addresses[0]['addr']
        else
          all_active = false
        end
      end
    end
  end

  ips

end

.index(options = {}) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 252

def self.index(options={})

  server_groups=[]
  Dir[File.join(ServerGroup.data_dir, '*.json')].each do  |file|
    server_groups << ServerGroup.from_json(IO.read(file))
  end
  server_groups

end

.init_connection ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 274

def self.init_connection
  configs = Util.load_configs
  if @@connection.nil? then
    @connection = Fog::Compute.new(
      :provider           => :openstack,
      :openstack_auth_url  => configs['openstack_url'],
      :openstack_username => configs['openstack_username'],
      :openstack_api_key => configs['openstack_password'],
      :openstack_service_name => configs['openstack_service_name'],
      :openstack_service_type => configs['openstack_service_type'],
      :openstack_region => configs['openstack_region']
    )
  else
    @@connection
  end
end

.most_recent ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 262

def self.most_recent
  server_groups=[]
  Dir[File.join(@@data_dir, "*.json")].each do  |file|
    server_groups << ServerGroup.from_json(IO.read(file))
  end
  if server_groups.size > 0 then
    server_groups.sort { |a,b| b.id <=> a.id }[0]
  else
    nil
  end
end

.ping_test(ip_addr) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 399

def self.ping_test(ip_addr)

  ping_timeout = (Util.load_configs['openstack_ping_timeout'] || 60).to_i

  begin
    ping = self.default_ip_type == 6 ? 'ping6' : 'ping'
    ping_command = "#{ping} -c 1 #{ip_addr} > /dev/null 2>&1"
    Timeout::timeout(ping_timeout) do
      while(1) do
        return true if system(ping_command)
      end
    end
  rescue Timeout::Error => te
    raise KytoonException, "Timeout pinging server: #{ping_command}"
  end

  return false

end

.release_floating_ip(server) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 343

def self.release_floating_ip(server)

  conn = self.init_connection

  address_ip = server['floating_ip']
  address_id = server['floating_ip_id']

  conn.disassociate_address(server['id'], address_ip)

  # wait for address to disassociate (instance_id should be nil)
  1.upto(30) do
    floating_ips = conn.list_all_addresses.body['floating_ips']
    break if floating_ips.detect {|f| f['id'] == address_id and f['instance_id' == nil]}
  end

  begin
    conn.release_address(address_id)
  rescue Fog::Compute::OpenStack::NotFound
    puts "Unable to release IP address #{address_ip}: Not Found."
  end

end

Instance Method Details

#cache_to_disk ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 108

def cache_to_disk

  sg_hash = {
      'id' => @id,
      'name' => @name,
      'use_security_groups' => @use_security_groups,
      'servers' => []
  }
  @servers.each do |server|
      sg_hash['servers'] << {'id' => server['id'], 'hostname' => server['hostname'], 'image_ref' => server['image_ref'], 'gateway' => server['gateway'], 'flavor_ref' => server['flavor_ref'], 'ip_address' => server['ip_address'], 'floating_ip' => server['floating_ip'], 'floating_ip_id' => server['floating_ip_id'], 'assign_floating_ip' => server['assign_floating_ip']}
  end

  FileUtils.mkdir_p(@@data_dir)
  File.open(File.join(@@data_dir, "#{@id}.json"), 'w') do |f|
    f.chmod(0600)
    f.write(sg_hash.to_json)
  end
end

#delete ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 127

def delete
  servers.each do |server|
    if server['assign_floating_ip'] == 'true' then
      ServerGroup.release_floating_ip(server)
    end
    ServerGroup.destroy_instance(server['id'])
  end

  #cleanup ssh keys
  private_ssh_key = File.join(@@data_dir, "#{@id}_id_rsa")
  public_ssh_key = File.join(@@data_dir, "#{@id}_id_rsa.pub")
  [private_ssh_key, public_ssh_key].each do |file|
    File.delete(file) if File.exists?(file)
  end

  out_file=File.join(@@data_dir, "#{@id}.json")
  File.delete(out_file) if File.exists?(out_file)
end

#gateway_ip ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 46

def gateway_ip
  @servers.select {|s| s['gateway'] == 'true' }[0]['ip_address'] if @servers.size > 0
end

#pretty_print ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 79

def pretty_print

  puts "Group ID: #{@id}"
  puts "name: #{@name}"
  puts "gateway IP: #{self.gateway_ip}"
  puts "Servers:"
  servers.each do |server|
    puts "\tname: #{server['hostname']}"
    puts "\t--"
  end

end

#server(name) ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 38

def server(name)
  @servers.select {|s| s['hostname'] == name}[0] if @servers.size > 0
end

#server_names ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 92

def server_names

  names=[]

  servers.each do |server|
    if block_given? then
      yield server['hostname']
    else
      names << server['hostname']
    end  
  end

  names
  
end

#servers ⇒ Object 



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# File 'lib/kytoon/providers/openstack/server_group.rb', line 42

def servers
  @servers
end