Class: Commands::MultiSSHInstance

Inherits:
Object
  • Object
show all
Defined in:
lib/commands/multi_ssh_instance.rb

Instance Method Summary collapse

Instance Method Details

#options ⇒ Object

holds the options that were passed you can set any initial defaults here



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# File 'lib/commands/multi_ssh_instance.rb', line 9

def options
  @options ||= {
      :roles => [],
      :instances => []
  }
end

#register(opts, global_options) ⇒ Object 



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# File 'lib/commands/multi_ssh_instance.rb', line 23

def register(opts, global_options)
  opts.banner = "Usage: multi_ssh [options]"
  opts.description = "Run a remote command on multiple servers via ssh"

  opts.on('-i', "--instances instance1,instance2,etc", Array, "The instance(s) to connect to.") do |v|
    options[:instances] = v
  end

  opts.on('-r', "--role role1,role2", Array,  "Roles to use.") do |v|
    valid_roles = MetaOptions.roles
    v.each do |r|
      raise "Not a valid role: #{r}" if !valid_roles.include?(r.to_sym)
    end
    options[:roles] = v
  end

  opts.on('-g', "--group deploy_group", "Required: Group to look for.") do |v|
    options[:group] = v
  end

  opts.on('-f', "--file file", "A file that contains the commands to execute.") do |v|
    options[:file] = v
  end

  opts.on('-p', "--print path", "The directory into which we output the data as a file per host.") do |v|
    options[:result_path] = v
  end
end

#required_options ⇒ Object

required options



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# File 'lib/commands/multi_ssh_instance.rb', line 17

def required_options
  @required_options ||= Set.new [
    :group
  ]
end

#run(global_options, amazon) ⇒ Object 



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# File 'lib/commands/multi_ssh_instance.rb', line 53

def run(global_options, amazon)
  ec2 = amazon.ec2

  file_path = options[:file]
  if file_path.nil?
    if ARGV.length != 1
      raise "Must include the remote command to run.  Make sure you quote it so it appears as one argument"
    end
    remote_cmd = ARGV[0]
  else
    remote_cmd = File.open(file_path, 'r') {|f| f.read }
  end

  group_name = options[:group]
  deploy_group = amazon.find_deploy_group(group_name)
  group_config = deploy_group.config

  user_instances = options[:instances]
  roles = options[:roles]
  filters_off = roles.empty? && user_instances.empty?
  instances = []  # build the instances wanted here
  server_instances = amazon.find_and_sort_named_instances(options[:group], nil, false)
  server_instances.each do |server_instance|
    server_instance_id = server_instance[:resource_id]
    server_instance_role = server_instance[:role]
    if filters_off || roles.include?(server_instance_role) || user_instances.include?(server_instance_id)
      # include this instance in the result set
      instances << server_instance
    end
  end

  if instances.empty?
     raise "No instances matched your search criteria."
  end

  multi = MultiSSH.new(amazon, group_name, deploy_group)
  multi.run_instances(instances, remote_cmd)
  multi.output_tracked_data_to_files("multi_ssh", options[:result_path])
end