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 176

def (template, vm)
  user = backend.hget("vmpooler__token__#{request.env['HTTP_X_AUTH_TOKEN']}", 'user')
  has_token_result = has_token?
  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_result
    backend.hset("vmpooler__vm__#{vm}", 'token:token', request.env['HTTP_X_AUTH_TOKEN'])
    backend.hset("vmpooler__vm__#{vm}", 'token:user', 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 203

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

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

  payload.each do |requested, count|
    count.to_i.times do |_i|
      vmname, vmpool, vmtemplate = fetch_single_vm(requested)
      if vmname
        (vmpool, vmname)
        vms << [vmpool, vmname, vmtemplate]
        metrics.increment("checkout.success.#{vmpool}")
        update_user_metrics('allocate', vmname) if Vmpooler::API.settings.config[:config]['usage_stats']
      else
        failed = true
        metrics.increment("checkout.empty.#{requested}")
        break
      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)|
      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 15

def backend
  Vmpooler::API.settings.redis
end

#check_ondemand_request(request_id) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 1084

def check_ondemand_request(request_id)
  result = { 'ok' => false }
  request_hash = backend.hgetall("vmpooler__odrequest__#{request_id}")
  if request_hash.empty?
    result['message'] = "no request found for request_id '#{request_id}'"
    return result
  end

  result['request_id'] = request_id
  result['ready'] = false
  result['ok'] = true
  status 202

  case request_hash['status']
  when 'ready'
    result['ready'] = true
    Parsing.get_platform_pool_count(request_hash['requested']) do |platform_alias, pool, _count|
      instances = backend.smembers("vmpooler__#{request_id}__#{platform_alias}__#{pool}")

      if result.key?(platform_alias)
        result[platform_alias][:hostname] = result[platform_alias][:hostname] + instances
      else
        result[platform_alias] = { 'hostname': instances }
      end
    end
    result['domain'] = config['domain'] if config['domain']
    status 200
  when 'failed'
    result['message'] = "The request failed to provision instances within the configured ondemand_request_ttl '#{config['ondemand_request_ttl']}'"
    status 200
  when 'deleted'
    result['message'] = 'The request has been deleted'
    status 200
  else
    Parsing.get_platform_pool_count(request_hash['requested']) do |platform_alias, pool, count|
      instance_count = backend.scard("vmpooler__#{request_id}__#{platform_alias}__#{pool}")
      instances_pending = count.to_i - instance_count.to_i

      if result.key?(platform_alias) && result[platform_alias].key?(:ready)
        result[platform_alias][:ready] = (result[platform_alias][:ready].to_i + instance_count).to_s
        result[platform_alias][:pending] = (result[platform_alias][:pending].to_i + instances_pending).to_s
      else
        result[platform_alias] = {
          'ready': instance_count.to_s,
          'pending': instances_pending.to_s
        }
      end
    end
  end

  result
end

#checkoutlock ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 47

def checkoutlock
  Vmpooler::API.settings.checkoutlock
end

#component_to_test(match, labels_string) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 243

def component_to_test(match, labels_string)
  return if labels_string.nil?

  labels_string_parts = labels_string.split(',')
  labels_string_parts.each do |part|
    key, value = part.split('=')
    next if value.nil?
    return value if key == match
  end
  'none'
end

#config ⇒ Object 



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

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

#count_selection(selection) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 79

def count_selection(selection)
  result = {}
  selection.uniq.each do |poolname|
    result[poolname] = selection.count(poolname)
  end
  result
end

#delete_ondemand_request(request_id) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 1137

def delete_ondemand_request(request_id)
  result = { 'ok' => false }

  platforms = backend.hget("vmpooler__odrequest__#{request_id}", 'requested')
  unless platforms
    result['message'] = "no request found for request_id '#{request_id}'"
    return result
  end

  if backend.hget("vmpooler__odrequest__#{request_id}", 'status') == 'deleted'
    result['message'] = 'the request has already been deleted'
  else
    backend.hset("vmpooler__odrequest__#{request_id}", 'status', 'deleted')

    Parsing.get_platform_pool_count(platforms) do |platform_alias, pool, _count|
      backend.smembers("vmpooler__#{request_id}__#{platform_alias}__#{pool}")&.each do |vm|
        backend.smove("vmpooler__running__#{pool}", "vmpooler__completed__#{pool}", vm)
      end
      backend.del("vmpooler__#{request_id}__#{platform_alias}__#{pool}")
    end
    backend.expire("vmpooler__odrequest__#{request_id}", 129_600_0)
  end
  status 200
  result['ok'] = true
  result
end

#evaluate_template_aliases(template, count) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 87

def evaluate_template_aliases(template, count)
  template_backends = []
  template_backends << template if backend.sismember('vmpooler__pools', template)
  selection = []
  aliases = get_template_aliases(template)
  if aliases
    template_backends += aliases
    weighted_pools = get_pool_weights(template_backends)

    if weighted_pools.count > 1 && weighted_pools.count == template_backends.count
      pickup = Pickup.new(weighted_pools)
      count.to_i.times do
        selection << pickup.pick
      end
    else
      count.to_i.times do
        selection << template_backends.sample
      end
    end
  end

  count_selection(selection)
end

#extract_templates_from_query_params(params) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 1033

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 111

def fetch_single_vm(template)
  template_backends = [template]
  aliases = Vmpooler::API.settings.config[:alias]
  if aliases
    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
          smoved = backend.smove("vmpooler__ready__#{template_backend}", "vmpooler__running__#{template_backend}", vm)
          if smoved
            return [vm, template_backend, template]
          else
            metrics.increment("checkout.smove.failed.#{template_backend}")
            return [nil, nil, nil]
          end
        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

#generate_ondemand_request(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 460

def generate_ondemand_request(payload)
  result = { 'ok': false }

  requested_instances = payload.reject { |k, _v| k == 'request_id' }
  if too_many_requested?(requested_instances)
    result['message'] = "requested amount of instances exceeds the maximum #{config['max_ondemand_instances_per_request']}"
    status 403
    return result
  end

  score = Time.now.to_i
  request_id = payload['request_id']
  request_id ||= generate_request_id
  result['request_id'] = request_id

  if backend.exists?("vmpooler__odrequest__#{request_id}")
    result['message'] = "request_id '#{request_id}' has already been created"
    status 409
    metrics.increment('ondemandrequest_generate.duplicaterequests')
    return result
  end

  status 201

  platforms_with_aliases = []
  requested_instances.each do |poolname, count|
    selection = evaluate_template_aliases(poolname, count)
    selection.map { |selected_pool, selected_pool_count| platforms_with_aliases << "#{poolname}:#{selected_pool}:#{selected_pool_count}" }
  end
  platforms_string = platforms_with_aliases.join(',')

  return result unless backend.zadd('vmpooler__provisioning__request', score, request_id)

  backend.hset("vmpooler__odrequest__#{request_id}", 'requested', platforms_string)
  if Vmpooler::API.settings.config[:auth] and has_token?
    backend.hset("vmpooler__odrequest__#{request_id}", 'token:token', request.env['HTTP_X_AUTH_TOKEN'])
    backend.hset("vmpooler__odrequest__#{request_id}", 'token:user',
                 backend.hget("vmpooler__token__#{request.env['HTTP_X_AUTH_TOKEN']}", 'user'))
  end

  result['domain'] = config['domain'] if config['domain']
  result[:ok] = true
  metrics.increment('ondemandrequest_generate.success')
  result
end

#generate_request_id ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 506

def generate_request_id
  SecureRandom.uuid
end

#get_pool_weights(template_backends) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 61

def get_pool_weights(template_backends)
  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
  weighted_pools
end

#get_template_aliases(template) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 51

def get_template_aliases(template)
  result = []
  aliases = Vmpooler::API.settings.config[:alias]
  if aliases
    result += aliases[template] if aliases[template].is_a?(Array)
    template_backends << aliases[template] if aliases[template].is_a?(String)
  end
  result
end

#invalid_pool(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 1076

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 1065

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 1052

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 1044

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 19

def metrics
  Vmpooler::API.settings.metrics
end

#need_auth! ⇒ Object 



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

def need_auth!
  validate_auth(backend)
end

#need_token! ⇒ Object 



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

def need_token!
  validate_token(backend)
end

#pool_exists?(template) ⇒ Boolean

Returns:

  • (Boolean) 


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

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 27

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

#pools_at_startup ⇒ Object 



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

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

#reset_pool(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 389

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

  payload.each do |poolname, _count|
    backend.sadd('vmpooler__poolreset', poolname)
  end
  status 201
  result['ok'] = true
  result
end

#reset_pool_size(poolname) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 296

def reset_pool_size(poolname)
  result = { 'ok' => false }

  pool_index = pool_index(pools)

  pools_updated = 0
  sync_pool_sizes

  pool_size_now = pools[pool_index[poolname]]['size'].to_i
  pool_size_original = pools_at_startup[pool_index[poolname]]['size'].to_i
  result['pool_size_before_reset'] = pool_size_now
  result['pool_size_before_overrides'] = pool_size_original

  unless pool_size_now == pool_size_original
    pools[pool_index[poolname]]['size'] = pool_size_original
    backend.hdel('vmpooler__config__poolsize', poolname)
    backend.sadd('vmpooler__pool__undo_size_override', poolname)
    pools_updated += 1
    status 201
  end

  status 200 unless pools_updated > 0
  result['ok'] = true
  result
end

#reset_pool_template(poolname) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 342

def reset_pool_template(poolname)
  result = { 'ok' => false }

  pool_index_live = pool_index(pools)
  pool_index_original = pool_index(pools_at_startup)

  pools_updated = 0
  sync_pool_templates

  template_now = pools[pool_index_live[poolname]]['template']
  template_original = pools_at_startup[pool_index_original[poolname]]['template']
  result['template_before_reset'] = template_now
  result['template_before_overrides'] = template_original

  unless template_now == template_original
    pools[pool_index_live[poolname]]['template'] = template_original
    backend.hdel('vmpooler__config__template', poolname)
    backend.sadd('vmpooler__pool__undo_template_override', poolname)
    pools_updated += 1
    status 201
  end

  status 200 unless pools_updated > 0
  result['ok'] = true
  result
end

#return_vm_to_ready_state(template, vm) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 169

def return_vm_to_ready_state(template, vm)
  backend.srem("vmpooler__migrating__#{template}", vm)
  backend.hdel("vmpooler__active__#{template}", vm)
  backend.hdel("vmpooler__vm__#{vm}", 'checkout', 'token:token', 'token:user')
  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 440

def sync_clone_targets
  pool_index = pool_index(pools)
  clone_target_configs = backend.hgetall('vmpooler__config__clone_target')
  clone_target_configs&.each do |poolname, clone_target|
    next unless pool_index.include? poolname

    pools[pool_index[poolname]]['clone_target'] = clone_target
  end
end

#sync_pool_sizes ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 430

def sync_pool_sizes
  pool_index = pool_index(pools)
  poolsize_configs = backend.hgetall('vmpooler__config__poolsize')
  poolsize_configs&.each do |poolname, size|
    next unless pool_index.include? poolname

    pools[pool_index[poolname]]['size'] = size.to_i
  end
end

#sync_pool_templates ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 420

def sync_pool_templates
  pool_index = pool_index(pools)
  template_configs = backend.hgetall('vmpooler__config__template')
  template_configs&.each do |poolname, template|
    next unless pool_index.include? poolname

    pools[pool_index[poolname]]['template'] = template
  end
end

#too_many_requested?(payload) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/vmpooler/api/v1.rb', line 450

def too_many_requested?(payload)
  payload&.each do |poolname, count|
    next unless count.to_i > config['max_ondemand_instances_per_request']

    metrics.increment("ondemandrequest_fail.toomanyrequests.#{poolname}")
    return true
  end
  false
end

#update_clone_target(payload) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 400

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 322

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 369

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 193

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

#update_user_metrics(operation, vmname) ⇒ Object 



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# File 'lib/vmpooler/api/v1.rb', line 255

def update_user_metrics(operation, vmname)
  backend.multi
  backend.hget("vmpooler__vm__#{vmname}", 'tag:jenkins_build_url')
  backend.hget("vmpooler__vm__#{vmname}", 'token:user')
  backend.hget("vmpooler__vm__#{vmname}", 'template')
  jenkins_build_url, user, poolname = backend.exec
  poolname = poolname.gsub('.', '_')

  if user
    user = user.gsub('.', '_')
  else
    user = 'unauthenticated'
  end
  metrics.increment("user.#{user}.#{operation}.#{poolname}")

  if jenkins_build_url
    if jenkins_build_url.include? 'litmus'
      # Very simple filter for Litmus jobs - just count them coming through for the moment.
      metrics.increment("usage_litmus.#{user}.#{operation}.#{poolname}")
      return
    end

    url_parts = jenkins_build_url.split('/')[2..-1]
    jenkins_instance = url_parts[0].gsub('.', '_')
    value_stream_parts = url_parts[2].split('_')
    value_stream_parts = value_stream_parts.map { |s| s.gsub('.', '_') }
    value_stream = value_stream_parts.shift
    branch = value_stream_parts.pop
    project = value_stream_parts.shift
    job_name = value_stream_parts.join('_')
    build_metadata_parts = url_parts[3]
    component_to_test = component_to_test('RMM_COMPONENT_TO_TEST_NAME', build_metadata_parts)

    metrics.increment("usage_jenkins_instance.#{jenkins_instance}.#{value_stream}.#{operation}.#{poolname}")
    metrics.increment("usage_branch_project.#{branch}.#{project}.#{operation}.#{poolname}")
    metrics.increment("usage_job_component.#{job_name}.#{component_to_test}.#{operation}.#{poolname}")
  end
rescue StandardError => e
  puts 'd', "[!] [#{poolname}] failed while evaluating usage labels on '#{vmname}' with an error: #{e}"
end