Class: Vmpooler::API::V1

Inherits:
Sinatra::Base
  • Object
show all
Defined in:
lib/vmpooler/api/v1.rb

Instance Method Summary collapse

Instance Method Details

#account_for_starting_vm(template, vm) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 97

def (template, vm)
  backend.sadd("vmpooler__migrating__#{template}", vm)
  backend.hset("vmpooler__active__#{template}", vm, Time.now)
  backend.hset("vmpooler__vm__#{vm}", 'checkout', Time.now)

  if Vmpooler::API.settings.config[:auth] and has_token?
    validate_token(backend)

    backend.hset('vmpooler__vm__' + vm, 'token:token', request.env['HTTP_X_AUTH_TOKEN'])
    backend.hset('vmpooler__vm__' + vm, 'token:user',
      backend.hget('vmpooler__token__' + request.env['HTTP_X_AUTH_TOKEN'], 'user')
    )

    if config['vm_lifetime_auth'].to_i > 0
      backend.hset('vmpooler__vm__' + vm, 'lifetime', config['vm_lifetime_auth'].to_i)
    end
  end
end

#atomically_allocate_vms(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 126

def atomically_allocate_vms(payload)
  result = { 'ok' => false }
  failed = false
  vms = []

  payload.each do |requested, count|
    count.to_i.times do |_i|
      vmname, vmpool, vmtemplate = fetch_single_vm(requested)
      if !vmname
        failed = true
        metrics.increment('checkout.empty.' + requested)
        break
      else
        vms << [ vmpool, vmname, vmtemplate ]
        metrics.increment('checkout.success.' + vmtemplate)
      end
    end
  end

  if failed
    vms.each do |(vmpool, vmname, vmtemplate)|
      return_vm_to_ready_state(vmpool, vmname)
    end
    status 503
  else
    vms.each do |(vmpool, vmname, vmtemplate)|
      (vmpool, vmname)
      update_result_hosts(result, vmtemplate, vmname)
    end

    result['ok'] = true
    result['domain'] = config['domain'] if config['domain']
  end

  result
end

#backend ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 11

def backend
  Vmpooler::API.settings.redis
end

#checkoutlock ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 39

def checkoutlock
  Vmpooler::API::settings.checkoutlock
end

#config ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 19

def config
  Vmpooler::API.settings.config[:config]
end

#extract_templates_from_query_params(params) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 700

def extract_templates_from_query_params(params)
  payload = {}

  params.split('+').each do |template|
    payload[template] ||= 0
    payload[template] += 1
  end

  payload
end

#fetch_single_vm(template) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 43

def fetch_single_vm(template)
  template_backends = [template]
  aliases = Vmpooler::API.settings.config[:alias]
  if aliases
    template_backends = template_backends + aliases[template] if aliases[template].is_a?(Array)
    template_backends << aliases[template] if aliases[template].is_a?(String)
    pool_index = pool_index(pools)
    weighted_pools = {}
    template_backends.each do |t|
      next unless pool_index.key? t
      index = pool_index[t]
      clone_target = pools[index]['clone_target'] || config['clone_target']
      next unless config.key?('backend_weight')
      weight = config['backend_weight'][clone_target]
      if weight
        weighted_pools[t] = weight
      end
    end

    if weighted_pools.count == template_backends.count
      pickup = Pickup.new(weighted_pools)
      selection = pickup.pick
      template_backends.delete(selection)
      template_backends.unshift(selection)
    else
      first = template_backends.sample
      template_backends.delete(first)
      template_backends.unshift(first)
    end
  end

  checkoutlock.synchronize do
    template_backends.each do |template_backend|
      vms = backend.smembers("vmpooler__ready__#{template_backend}")
      next if vms.empty?
      vms.reverse.each do |vm|
        ready = vm_ready?(vm, config['domain'])
        if ready
          backend.smove("vmpooler__ready__#{template_backend}", "vmpooler__running__#{template_backend}", vm)
          return [vm, template_backend, template]
        else
          backend.smove("vmpooler__ready__#{template_backend}", "vmpooler__completed__#{template_backend}", vm)
          metrics.increment("checkout.nonresponsive.#{template_backend}")
        end
      end
    end
    [nil, nil, nil]
  end
end

#invalid_pool(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 743

def invalid_pool(payload)
  invalid = []
  payload.each do |pool, clone_target|
    invalid << pool unless pool_exists?(pool)
  end
  invalid
end

#invalid_template_or_path(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 732

def invalid_template_or_path(payload)
  invalid = []
  payload.each do |pool, template|
    invalid << pool unless pool_exists?(pool)
    invalid << pool unless template.include? '/'
    invalid << pool if template[0] == '/'
    invalid << pool if template[-1] == '/'
  end
  invalid
end

#invalid_template_or_size(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 719

def invalid_template_or_size(payload)
  invalid = []
  payload.each do |pool, size|
    invalid << pool unless pool_exists?(pool)
    unless is_integer?(size)
      invalid << pool
      next
    end
    invalid << pool unless Integer(size) >= 0
  end
  invalid
end

#invalid_templates(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 711

def invalid_templates(payload)
  invalid = []
  payload.keys.each do |template|
    invalid << template unless pool_exists?(template)
  end
  invalid
end

#metrics ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 15

def metrics
  Vmpooler::API.settings.metrics
end

#need_auth! ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 31

def need_auth!
  validate_auth(backend)
end

#need_token! ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 35

def need_token!
  validate_token(backend)
end

#pool_exists?(template) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vmpooler/api/v1.rb', line 27

def pool_exists?(template)
  Vmpooler::API.settings.config[:pool_names].include?(template)
end

#pools ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 23

def pools
  Vmpooler::API.settings.config[:pools]
end

#return_vm_to_ready_state(template, vm) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 93

def return_vm_to_ready_state(template, vm)
  backend.smove("vmpooler__running__#{template}", "vmpooler__ready__#{template}", vm)
end

#sync_clone_targets ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 251

def sync_clone_targets
  pool_index = pool_index(pools)
  clone_target_configs = backend.hgetall('vmpooler__config__clone_target')
  unless clone_target_configs.nil?
    clone_target_configs.each do |poolname, clone_target|
      if pool_index.include? poolname
        unless pools[pool_index[poolname]]['clone_target'] == clone_target
          pools[pool_index[poolname]]['clone_target'] == clone_target
          end
      end
    end
  end
end

#sync_pool_sizes ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 237

def sync_pool_sizes
  pool_index = pool_index(pools)
  poolsize_configs = backend.hgetall('vmpooler__config__poolsize')
  unless poolsize_configs.nil?
    poolsize_configs.each do |poolname, size|
      if pool_index.include? poolname
        unless pools[pool_index[poolname]]['size'] == size.to_i
          pools[pool_index[poolname]]['size'] == size.to_i
        end
      end
    end
  end
end

#sync_pool_templates ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 223

def sync_pool_templates
  pool_index = pool_index(pools)
  template_configs = backend.hgetall('vmpooler__config__template')
  unless template_configs.nil?
    template_configs.each do |poolname, template|
      if pool_index.include? poolname
        unless pools[pool_index[poolname]]['template'] == template
          pools[pool_index[poolname]]['template'] = template
        end
      end
    end
  end
end

#update_clone_target(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 203

def update_clone_target(payload)
  result = { 'ok' => false }

  pool_index = pool_index(pools)
  pools_updated = 0
  sync_clone_targets

  payload.each do |poolname, clone_target|
    unless pools[pool_index[poolname]]['clone_target'] == clone_target
      pools[pool_index[poolname]]['clone_target'] == clone_target
      backend.hset('vmpooler__config__clone_target', poolname, clone_target)
      pools_updated += 1
      status 201
    end
  end
  status 200 unless pools_updated > 0
  result['ok'] = true
  result
end

#update_pool_size(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 163

def update_pool_size(payload)
  result = { 'ok' => false }

  pool_index = pool_index(pools)
  pools_updated = 0
  sync_pool_sizes

  payload.each do |poolname, size|
    unless pools[pool_index[poolname]]['size'] == size.to_i
      pools[pool_index[poolname]]['size'] = size.to_i
      backend.hset('vmpooler__config__poolsize', poolname, size)
      pools_updated += 1
      status 201
    end
  end
  status 200 unless pools_updated > 0
  result['ok'] = true
  result
end

#update_pool_template(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 183

def update_pool_template(payload)
  result = { 'ok' => false }

  pool_index = pool_index(pools)
  pools_updated = 0
  sync_pool_templates

  payload.each do |poolname, template|
    unless pools[pool_index[poolname]]['template'] == template
      pools[pool_index[poolname]]['template'] = template
      backend.hset('vmpooler__config__template', poolname, template)
      pools_updated += 1
      status 201
    end
  end
  status 200 unless pools_updated > 0
  result['ok'] = true
  result
end

#update_result_hosts(result, template, vm) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 116

def update_result_hosts(result, template, vm)
  result[template] ||= {}
  if result[template]['hostname']
    result[template]['hostname'] = Array(result[template]['hostname'])
    result[template]['hostname'].push(vm)
  else
    result[template]['hostname'] = vm
  end
end