Module: CloudstackCli::Helper

Included in:
Base
Defined in:
lib/cloudstack-cli/helper.rb

Constant Summary collapse

ASYNC_STATES = 
{
  -1 => "waiting",
  0  => "running",
  1  => "completed",
  2  => "error"
}

Instance Method Summary collapse

Instance Method Details

#ask_number(question) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 9

def ask_number(question)
  number = ask(question).to_i - 1
  number < 0 ? 0 : number
end

#bootstrap_server(args = {}) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 129

def bootstrap_server(args = {})
  if args[:project] && project = find_project(args[:project])
    project_id = project["id"]
    project_name = project['name']
  end

  if args[:name]
    args['displayname'] = args[:name]
    name = args[:name]
  elsif args[:displayname]
    name = args[:displayname]
  end

  unless server = client.list_virtual_machines(name: args[:name], project_id: project_id).first
    say "Create VM #{name}...", :yellow
    server = client.deploy_virtual_machine(args)
    puts
    say "VM #{name} has been created.", :green
  else
    say "VM #{name} already exists (#{server["state"]}).", :yellow
  end

  if args[:port_rules] && args[:port_rules].size > 0
    create_port_rules(server, args[:port_rules])
  end
  server
end

#bootstrap_server_interactive ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 231

def bootstrap_server_interactive
  zones = client.list_zones
  if zones.size > 1
    say "Select a availability zone:", :yellow
    print_options(zones)
    zone = ask_number("Zone Nr.: ")
  else
    zone = 0
  end

  projects = client.list_projects
  project_id = nil
  if projects.size > 0
    if yes?("Do you want to deploy your VM within a project? (y/N)") && projects.size > 0
      say "Select a project", :yellow
      print_options(projects)
      project = ask_number("Project Nr.: ")
      project_id = projects[project]['id'] rescue nil
    end
  end

  say "Please provide a name for the new VM", :yellow
  say "(spaces or special characters are NOT allowed)"
  server_name = ask("Server name: ")

  server_offerings = client.list_service_offerings
  say "Select a computing offering:", :yellow
  print_options(server_offerings)
  service_offering = ask_number("Offering Nr.: ")

  templates = client.list_templates(project_id: project_id, zone_id: zones[zone]["id"], template_filter: "executable")
  say "Select a template:", :yellow
  print_options(templates)
  template = ask_number("Template Nr.: ")

  networks = client.list_networks(project_id: project_id, zone_id: zones[zone]["id"])
  if networks.size > 1
    say "Select a network:", :yellow
    print_options(networks)
    network = ask_number("Network Nr.: ")
  else
    network = 0
  end

  say "You entered the following configuration:", :yellow
  table =  [["Zone", zones[zone]["name"]]]
  table << ["VM Name", server_name]
  table << ["Template", templates[template]["name"]]
  table << ["Offering", server_offerings[service_offering]["name"]]
  table << ["Network", networks[network]["name"]]
  table << ["Project", projects[project]["name"]] if project
  print_table table

  if yes? "Do you want to deploy this VM? (y/N)"
    bootstrap_server(
      name: server_name,
      zone_id: zones[zone]["id"],
      template_id: templates[template]["id"],
      serviceoffering_id: server_offerings[service_offering]["id"],
      network_ids: network ? networks[network]["id"] : nil,
      project_id: project_id
    )
  end
end

#create_port_rules(server, port_rules, async = true) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 168

def create_port_rules(server, port_rules, async = true)
  frontendip_id = nil
  jobs = []
  client.verbose = async
  project_id = server['projectid'] || nil
  port_rules.each do |pf_rule|
    pf_rule = pf_rule_to_object(pf_rule)
    if pf_rule[:ipaddress]
      pub_ip = client.list_public_ip_addresses(
        network_id: get_server_default_nic(server)["networkid"],
        project_id: project_id,
        ipaddress: pf_rule[:ipaddress]
      )
      ip_addr = pub_ip.find { |addr| addr['ipaddress'] == pf_rule[:ipaddress]} if pub_ip
      if ip_addr
        frontendip = ip_addr['id']
      else
        say "Error: IP #{pf_rule[:ipaddress]} not found.", :red
        next
      end
    end

    # check if there is already an existing rule
    rules = client.list_port_forwarding_rules(
      networkid: get_server_default_nic(server)["networkid"],
      ipaddressid: frontendip_id,
      projectid: project_id
    )
    existing_pf_rules = rules.find do |rule|
      # remember matching address for additional rules
      frontendip_id = rule['ipaddressid'] if rule['virtualmachineid'] == server['id']

      rule['virtualmachineid'] == server['id'] &&
      rule['publicport'] == pf_rule[:publicport] &&
      rule['privateport'] == pf_rule[:privateport] &&
      rule['protocol'] == pf_rule[:protocol]
    end

    if existing_pf_rules
      say "Port forwarding rule on port #{pf_rule[:privateport]} for VM #{server["name"]} already exists.", :yellow
    else
      unless frontendip_id
        frontendip_id = client.associate_ip_address(
          network_id: get_server_default_nic(server)["networkid"],
          project_id: project_id
        )['ipaddress']['id']
      end
      args = pf_rule.merge({
        ipaddressid: frontendip_id,
        virtualmachineid: server["id"]
      })
      if async
        say "Create port forwarding rule #{pf_rule[:ipaddress]}:#{port} for VM #{server["name"]}.", :yellow
        client.create_port_forwarding_rule(args)
        return
      else
        jobs << client.create_port_forwarding_rule(args, {sync: true})['jobid']
      end
    end
  end
  jobs
end

#create_server(args = {}) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 157

def create_server(args = {})
  if args[:project] && project = find_project(args[:project])
    project_id = project["id"]
    project_name = project['name']
  end
  unless server = client.list_virtual_machines(name: args[:name], project_id: project_id)
    server = client.deploy_virtual_machine(args)
  end
  server
end

#get_server_default_nic(server) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 296

def get_server_default_nic(server)
  server['nic'].each do |nic|
    return nic if nic['isdefault']
  end
end

#pf_rule_to_object(pf_rule) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 302

def pf_rule_to_object(pf_rule)
  pf_rule = pf_rule.split(":")
  {
    ipaddress: (pf_rule[0] == '' ? nil : pf_rule[0]),
    privateport: pf_rule[1],
    publicport: (pf_rule[2] || pf_rule[1]),
    protocol: (pf_rule[3] || 'tcp').downcase
  }
end

#print_job_status(jobs, spinner, opts = {t_start: Time.now}) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 115

def print_job_status(jobs, , opts = {t_start: Time.now})
  print ("\r" + "\e[A\e[K" * (jobs.size + 1)) unless opts[:no_clear]
  jobs.each_with_index do |job, i|
    print "#{job[:name]} : job #{ASYNC_STATES[job[:status]]} "
    puts job[:status] == 0 ? .first : ""
  end
  t_elapsed = opts[:t_start] ? (Time.now - opts[:t_start]).round(1) : 0
  completed = jobs.select{|j| j[:status] == 1}.size
  say "Completed: #{completed}/#{jobs.size} (#{t_elapsed}s)", :magenta
  sleep opts[:sleeptime] || 0.1
  .push .shift
  
end

#print_options(options, attr = 'name') ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 3

def print_options(options, attr = 'name')
  options.to_enum.with_index(1).each do |option, i|
     puts "#{i}: #{option[attr]}"
  end
end

#run_background_jobs(jobs, command) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 58

def run_background_jobs(jobs, command)
  view_thread = Thread.new do
    chars = %w(| / - \\)
    call = 0
    opts = {t_start: Time.now}

    while jobs.select{|job| job[:status] < 1 }.size > 0 do
      if call.modulo(40) == 0
        t = Thread.new { jobs = update_jobs(jobs, command) }
        while t.alive?
          chars = print_job_status(jobs, chars,
            call == 0 ? opts.merge(no_clear: true) : opts
          )
          call += 1
        end
        t.join
      else
        chars = print_job_status(jobs, chars,
          call == 0 ? opts.merge(no_clear: true) : opts
        )
        call += 1
      end
    end
    print_job_status(jobs, chars,
      call == 0 ? opts.merge(no_clear: true) : opts
    )
  end
  view_thread.join
end

#update_job_status(jobs) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 48

def update_job_status(jobs)
  jobs.each do |job|
    job[:status] = 0 unless job[:status]
    if job[:status] == 0
      job[:status] = client.query_async_job_result(job_id: job[:id])['jobstatus']
    end
  end
  jobs
end

#update_jobs(jobs, command) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 88

def update_jobs(jobs, command)
  # update running job status
  threads = jobs.select{|job| job[:status] == 0 }.map do |job|
    Thread.new do
      job[:status] = client.query_async_job_result(job_id: job[:job_id])['jobstatus']
    end
  end
  threads.each(&:join)

  # launch new jobs if required and possible
  launch_capacity = options[:concurrency] - jobs.select{|job| job[:status] == 0 }.count
  threads = []
  jobs.select{|job| job[:status] == -1 }.each do |job|
    if launch_capacity > 0
      threads << Thread.new do
        job[:job_id] = client.send(
          command, { id: job[:object_id] }, { sync: true }
        )['jobid']
        job[:status] = 0
      end
      launch_capacity -= 1
    end
  end
  threads.each(&:join)
  jobs
end

#watch_jobs(jobs) ⇒ Object 



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# File 'lib/cloudstack-cli/helper.rb', line 21

def watch_jobs(jobs)
  chars = %w(| / - \\)
  call = 0
  opts = {t_start: Time.now}
  jobs = update_job_status(jobs)
  while jobs.select{|job| job[:status].to_i < 1 }.size > 0 do
    if call.modulo(40) == 0
      t = Thread.new { jobs = update_job_status(jobs) }
      while t.alive?
        chars = print_job_status(jobs, chars,
          call == 0 ? opts.merge(no_clear: true) : opts
        )
        call += 1
      end
      t.join
    else
      chars = print_job_status(jobs, chars,
        call == 0 ? opts.merge(no_clear: true) : opts
      )
      call += 1
    end
  end
  print_job_status(jobs, chars,
    call == 0 ? opts.merge(no_clear: true) : opts
  )
end