Class: Kontena::Machine::DigitalOcean::NodeProvisioner

Inherits:
Object
  • Object
show all
Includes:
Cli::ShellSpinner, RandomName
Defined in:
lib/kontena/machine/digital_ocean/node_provisioner.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(api_client, token) ⇒ NodeProvisioner

Returns a new instance of NodeProvisioner.

Parameters:

  • api_client (Kontena::Client) —

    Kontena api client

  • token (String) —

    Digital Ocean token



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 16

def initialize(api_client, token)
  @api_client = api_client
  @client = DropletKit::Client.new(access_token: token)
end

Instance Attribute Details

#api_client ⇒ Object (readonly)

Returns the value of attribute api_client.



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 12

def api_client
  @api_client
end

#client ⇒ Object (readonly)

Returns the value of attribute client.



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 12

def client
  @client
end

Instance Method Details

#droplet_exists_in_grid?(grid, droplet) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 78

def droplet_exists_in_grid?(grid, droplet)
  api_client.get("grids/#{grid}/nodes")['nodes'].find{|n| n['name'] == droplet.name}
end

#erb(template, vars) ⇒ Object 



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 82

def erb(template, vars)
  ERB.new(template).result(OpenStruct.new(vars).instance_eval { binding })
end

#generate_name ⇒ Object 



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 70

def generate_name
  "#{super}-#{rand(1..99)}"
end

#run!(opts) ⇒ Object 



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 21

def run!(opts)
  abort('Invalid ssh key') unless File.exists?(File.expand_path(opts[:ssh_key]))

  ssh_key = ssh_key(File.read(File.expand_path(opts[:ssh_key])).strip)
  abort('Ssh key does not exist in Digital Ocean') unless ssh_key

  userdata_vars = {
    version: opts[:version],
    master_uri: opts[:master_uri],
    grid_token: opts[:grid_token],
  }
  droplets = []
  opts[:count].to_i.times do
    droplet = DropletKit::Droplet.new(
      name: opts[:name] || generate_name,
      region: opts[:region],
      image: 'coreos-stable',
      size: opts[:size],
      private_networking: true,
      user_data: user_data(userdata_vars),
      ssh_keys: [ssh_key.id]
    )
    created = client.droplets.create(droplet)
     "Creating DigitalOcean droplet #{droplet.name.colorize(:cyan)} " do
      sleep 1 until client.droplets.find(id: created.id).status == 'active'
    end
    droplets << droplet
  end
  droplets.each do |droplet|
    node = nil
     "Waiting for node #{droplet.name.colorize(:cyan)} join to grid #{opts[:grid].colorize(:cyan)} " do
      sleep 1 until node = droplet_exists_in_grid?(opts[:grid], droplet)
    end
    set_labels(
      node,
      [
        "region=#{opts[:region]}",
        "az=#{opts[:region]}",
        "provider=digitalocean"
      ]
    )
  end
end

#set_labels(node, labels) ⇒ Object 



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 86

def set_labels(node, labels)
  data = {labels: labels}
  api_client.put("nodes/#{node['id']}", data, {}, {'Kontena-Grid-Token' => node['grid']['token']})
end

#ssh_key(public_key) ⇒ Object 



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 74

def ssh_key(public_key)
  ssh_key = client.ssh_keys.all.find{|key| key.public_key == public_key}
end

#user_data(vars) ⇒ Object 



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# File 'lib/kontena/machine/digital_ocean/node_provisioner.rb', line 65

def user_data(vars)
  cloudinit_template = File.join(__dir__ , '/cloudinit.yml')
  erb(File.read(cloudinit_template), vars)
end