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32
README.md
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@ -1,6 +1,32 @@
# vmpooler-provider-gce
This is a WIP - do not use yet. Provider for GCE VMs in vmpooler.
This is a provider for [VMPooler](https://github.com/puppetlabs/vmpooler) allows using GCE to create instances, disks,
snapshots, or destroy instances for specific pools.
Vm has a label 'pool' that represent the VMpooler OS/pool it is part of
Boot disk had a label 'vm' that represent the vm_name it is attached to
## Usage
Include this gem in the same Gemfile that you use to install VMPooler itself and then define one or more pools with the `provider` key set to `gce`. VMPooler will take care of the rest.
See what configuration is needed for this provider in the [example file](https://github.com/puppetlabs/vmpooler-provider-gce/blob/main/vmpooler.yaml.example).
Examples of deploying VMPooler with extra providers can be found in the [puppetlabs/vmpooler-deployment](https://github.com/puppetlabs/vmpooler-deployment) repository.
GCE authorization is handled via a service account (or personal account) private key (json format) and can be configured via
1. GOOGLE_APPLICATION_CREDENTIALS environment variable eg GOOGLE_APPLICATION_CREDENTIALS=/my/home/directory/my_account_key.json
### Labels
This provider adds labels to all resources that are managed
|resource|labels|note|
|---|---|---|
|instance|pool=$pool_name|for example pool=pool1|
|disk|vm=$vm_name, pool=$pool_name|for example vm=foo-bar and pool=pool1|
|snapshot|snapshot_name=$snapshot_name, vm=$vm_name| for example snapshot_name=snap1, vm=foo-bar|
Also see the usage of vmpooler's optional purge_unconfigured_resources, which is used to delete any resource found that
do not have the pool label, and can be configured to allow a specific list of unconfigured pool names.
## License
vmpooler-provider-gce is distributed under the [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0.html). See the [LICENSE](LICENSE) file for more details.

168
lib/vmpooler/providers/gce.rb
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@ -90,15 +90,6 @@ module Vmpooler
vms
end
# inputs
# [String]pool_name : Name of the pool
# [String] vm_name : Name of the VM
# returns
# [String] : Name of the host computer running the vm. If this is not a Virtual Machine, it returns the vm_name
def get_vm_host(_pool_name, _vm_name)
raise("#{self.class.name} does not implement get_vm_host")
end
# inputs
# [String] pool_name : Name of the pool
# [String] vm_name : Name of the VM to find
@ -158,7 +149,6 @@ module Vmpooler
@connection_pool.with_metrics do |pool_object|
connection = ensured_gce_connection(pool_object)
# Assume all pool config is valid i.e. not missing
template_path = pool['template']
client = ::Google::Apis::ComputeV1::Instance.new(
:name => new_vmname,
:machine_type => pool['machine_type'],
@ -179,9 +169,6 @@ module Vmpooler
vm_hash = get_vm(pool_name, new_vmname)
end
vm_hash
rescue ::Google::Apis::ClientError => e
raise e unless e.status_code == 404
nil
end
def create_disk(pool_name, vm_name, disk_size)
@ -223,6 +210,10 @@ module Vmpooler
true
end
# for one vm, there could be multiple snapshots, one for each drive.
# since the snapshot resource needs a unique name in the gce project,
# we create a unique name by concatenating {new_snapshot_name}-#{disk.name}
# the disk name is based on vm_name which is already unique.
def create_snapshot(pool_name, vm_name, new_snapshot_name)
@connection_pool.with_metrics do |pool_object|
connection = ensured_gce_connection(pool_object)
@ -237,15 +228,14 @@ module Vmpooler
old_snap = find_snapshot(vm_name, new_snapshot_name, connection)
raise("Snapshot #{new_snapshot_name} for VM #{vm_name} in pool #{pool_name} already exists for the provider #{name}") unless old_snap.nil?
filter = "(labels.vm = #{vm_name})"
disk_list = connection.list_disks(project, zone(pool_name), filter: filter)
result_list = []
disk_list.items.each do |disk|
vm_object.disks.each do |attached_disk|
disk_name = disk_name_from_source(attached_disk)
snapshot_obj = ::Google::Apis::ComputeV1::Snapshot.new(
name: "#{new_snapshot_name}-#{disk.name}",
name: "#{new_snapshot_name}-#{disk_name}",
labels: {"snapshot_name" => new_snapshot_name, "vm" => vm_name}
)
result = connection.create_disk_snapshot(project, zone(pool_name), disk.name, snapshot_obj)
result = connection.create_disk_snapshot(project, zone(pool_name), disk_name, snapshot_obj)
# do them all async, keep a list, check later
result_list << result
end
@ -257,33 +247,113 @@ module Vmpooler
true
end
#TODO
# reverting in gce entails shutting down the VM,
# detaching and deleting the drives,
# creating new ones from the snapshot
def revert_snapshot(pool_name, vm_name, snapshot_name)
@connection_pool.with_metrics do |pool_object|
connection = ensured_gce_connection(pool_object)
begin
vm_object = connection.get_instance(project, zone(pool_name), vm_name)
raise("VM #{vm_name} in pool #{pool_name} does not exist for the provider #{name}") if vm_object.nil?
rescue ::Google::Apis::ClientError => e
raise e unless e.status_code == 404
#if it does not exist
raise("VM #{vm_name} in pool #{pool_name} does not exist for the provider #{name}")
end
snapshot_object = find_snapshot(vm_object,name, snapshot_name, connection)
snapshot_object = find_snapshot(vm_name, snapshot_name, connection)
raise("Snapshot #{snapshot_name} for VM #{vm_name} in pool #{pool_name} does not exist for the provider #{name}") if snapshot_object.nil?
#TODO part 2
# Shutdown instance
result = connection.stop_instance(project, zone(pool_name), vm_name)
wait_for_operation(project, pool_name, result, connection)
raise("No disk is currently attached to VM #{vm_name} in pool #{pool_name}, cannot revert snapshot") if vm_object.disks.nil?
# this block is sensitive to disruptions, for example if vmpooler is stopped while this is running
vm_object.disks.each do |attached_disk|
result = connection.detach_disk(project, zone(pool_name), vm_name, attached_disk.device_name)
wait_for_operation(project, pool_name, result, connection)
current_disk_name = disk_name_from_source(attached_disk)
result = connection.delete_disk(project, zone(pool_name), current_disk_name)
wait_for_operation(project, pool_name, result, connection)
snapshot_resource_name = "#{snapshot_name}-#{current_disk_name}"
snapshot = connection.get_snapshot(project,snapshot_resource_name)
disk = Google::Apis::ComputeV1::Disk.new(
:name => current_disk_name,
:labels => {"pool" => pool_name, "vm" => vm_name},
:source_snapshot => snapshot.self_link
)
result = connection.insert_disk(project, zone(pool_name), disk)
wait_for_operation(project, pool_name, result, connection)
new_disk = connection.get_disk(project, zone(pool_name), current_disk_name)
new_attached_disk = Google::Apis::ComputeV1::AttachedDisk.new(
:auto_delete => true,
:boot => attached_disk.boot,
:source => new_disk.self_link
)
result = connection.attach_disk(project, zone(pool_name), vm_name, new_attached_disk)
wait_for_operation(project, pool_name, result, connection)
end
result = connection.start_instance(project, zone(pool_name), vm_name)
wait_for_operation(project, pool_name, result, connection)
end
true
end
# deletes the instance and any disks and snapshots via the labels
# in gce instances, disks and snapshots are resources that can exist independent of each other
def destroy_vm(pool_name, vm_name)
@connection_pool.with_metrics do |pool_object|
connection = ensured_gce_connection(pool_object)
deleted = false
begin
vm_object = connection.get_instance(project, zone(pool_name), vm_name)
result = connection.delete_instance(project, zone(pool_name), vm_name)
wait_for_operation(project, pool_name, result, connection, 10)
end
true
rescue ::Google::Apis::ClientError => e
raise e unless e.status_code == 404
# If a VM doesn't exist then it is effectively deleted
deleted = true
end
if(!deleted)
result = connection.delete_instance(project, zone(pool_name), vm_name)
wait_for_operation(project, pool_name, result, connection, 10)
end
# list and delete any leftover disk, for instance if they were detached from the instance
filter = "(labels.vm = #{vm_name})"
disk_list = connection.list_disks(project, zone(pool_name), filter: filter)
result_list = []
unless disk_list.items.nil?
disk_list.items.each do |disk|
result = connection.delete_disk(project, zone(pool_name), disk.name)
# do them all async, keep a list, check later
result_list << result
end
end
#now check they are done
result_list.each do |result|
wait_for_operation(project, pool_name, result, connection)
end
# list and delete leftover snapshots, this could happen if snapshots were taken,
# as they are not removed when the original disk is deleted or the instance is detroyed
snapshot_list = find_all_snapshots(vm_name, connection)
result_list = []
unless snapshot_list.nil?
snapshot_list.each do |snapshot|
result = connection.delete_snapshot(project, snapshot.name)
# do them all async, keep a list, check later
result_list << result
end
end
#now check they are done
result_list.each do |result|
wait_for_operation(project, pool_name, result, connection)
end
end
true
end
@ -297,12 +367,29 @@ module Vmpooler
true
end
#TODO
# Scans zones that are configured for list of resources (VM, disks, snapshots) that do not have the label.pool set
# to one of the configured pools. If it is also not in the allowlist, the resource is destroyed
def purge_unconfigured_folders(base_folders, configured_folders, whitelist)
@connection_pool.with_metrics do |pool_object|
connection = ensured_gce_connection(pool_object)
pools_array = provided_pools
filter = {}
pools_array.each do |pool|
filter[zone(pool)] = [] if filter[zone(pool)].nil?
filter[zone(pool)] << "(labels.pool != #{pool} OR -labels.pool:*)"
end
vm_to_purge = []
filter.keys.each do |zone|
instance_list = connection.list_instances(project, zone, filter: filter[zone].join(" AND "))
next if instance_list.items.nil?
#TODO: part 2 use labels that are not configured
instance_list.items.each do |vm|
next if !vm.labels.nil? && whitelist&.include?(vm.labels['pool'])
next if whitelist&.include?("") && vm.labels.nil?
vm_to_purge << vm.name
end
end
puts vm_to_purge
end
end
@ -311,17 +398,21 @@ module Vmpooler
# Compute resource wait for operation to be DONE (synchronous operation)
def wait_for_operation(project, pool_name, result, connection, retries=5)
while result.status != 'DONE'
#logger.log('d',"#{Time.now} (#{retries}) #{result.status}")
result = connection.wait_zone_operation(project, zone(pool_name), result.name)
end
result
rescue Google::Apis::TransmissionError => e
# each retry typically about 1 minute.
# Error returned once timeout reached, each retry typically about 1 minute.
if retries > 0
retries = retries - 1
retry
end
raise
rescue Google::Apis::ClientError => e
raise e unless e.status_code == 404
# if the operation is not found, and we are 'waiting' on it, it might be because it
# is already finished
puts "waited on #{result.name} but was not found, so skipping"
end
# Return a hash of VM data
@ -386,15 +477,24 @@ module Vmpooler
end
end
# this is used because for one vm, with the same snapshot name there could be multiple snapshots,
# one for each disk
def find_snapshot(vm, snapshotname, connection)
filter = "(labels.vm = #{vm}) AND (labels.snapshot_name = #{snapshotname})"
snapshot_list = connection.list_snapshots(project,filter: filter)
return snapshot_list.items #array of snapshot objects
end
#all gce resource names to be RFC1035 compliant
def safe_name(name)
name =~ /[a-z]([-a-z0-9]*[a-z0-9])?/
# find all snapshots ever created for one vm,
# regardless of snapshot name, for example when deleting it all
def find_all_snapshots(vm, connection)
filter = "(labels.vm = #{vm})"
snapshot_list = connection.list_snapshots(project,filter: filter)
return snapshot_list.items #array of snapshot objects
end
def disk_name_from_source(attached_disk)
attached_disk.source.split('/')[-1] # disk name is after the last / of the full source URL
end
end
end

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spec/computeservice_helper.rb Normal file
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@ -0,0 +1,103 @@
# this file is used to Mock the GCE objects, for example the main ComputeService object
MockResult = Struct.new(
# https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/Operation.html
:client_operation_id, :creation_timestamp, :description, :end_time, :error, :http_error_message,
:http_error_status_code, :id, :insert_time, :kind, :name, :operation_type, :progress, :region,
:self_link, :start_time, :status, :status_message, :target_id, :target_link, :user, :warnings, :zone,
keyword_init: true
)
MockOperationError = Array.new
MockOperationErrorError = Struct.new(
# https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/Operation/Error/Error.html
:code, :location, :message,
keyword_init: true
)
MockInstance = Struct.new(
# https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/Instance.html
:can_ip_forward, :confidential_instance_config, :cpu_platform, :creation_timestamp, :deletion_protection,
:description, :disks, :display_device, :fingerprint, :guest_accelerators, :hostname, :id, :kind, :label_fingerprint,
:labels, :last_start_timestamp, :last_stop_timestamp, :last_suspended_timestamp, :machine_type, :metadata,
:min_cpu_platform, :name, :network_interfaces, :private_ipv6_google_access, :reservation_affinity, :resource_policies,
:scheduling, :self_link, :service_accounts, :shielded_instance_config, :shielded_instance_integrity_policy,
:start_restricted, :status, :status_message, :tags, :zone,
keyword_init: true
)
MockInstanceList = Struct.new(
#https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/InstanceList.html
:id, :items, :kind, :next_page_token, :self_link, :warning,
keyword_init: true
)
MockDiskList = Struct.new(
#https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/DiskList.html
:id, :items, :kind, :next_page_token, :self_link, :warning,
keyword_init: true
)
MockDisk = Struct.new(
#https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/Disk.html
:creation_timestamp, :description, :disk_encryption_key, :guest_os_features, :id, :kind, :label_fingerprint, :labels,
:last_attach_timestamp, :last_detach_timestamp, :license_codes, :licenses, :name, :options,
:physical_block_size_bytes, :region, :replica_zones, :resource_policies, :self_link, :size_gb, :source_disk,
:source_disk_id, :source_image, :source_image_encryption_key, :source_image_id, :source_snapshot,
:source_snapshot_encryption_key, :source_snapshot_id, :status, :type, :users, :zone,
keyword_init: true
)
MockSnapshot = Struct.new(
#https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/Snapshot.html
:auto_created, :chain_name, :creation_timestamp, :description, :disk_size_gb, :download_bytes, :id, :kind,
:label_fingerprint, :labels, :license_codes, :licenses, :name, :self_link, :snapshot_encryption_key, :source_disk,
:source_disk_encryption_key, :source_disk_id, :status, :storage_bytes, :storage_bytes_status, :storage_locations,
keyword_init: true
)
MockAttachedDisk = Struct.new(
#https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/AttachedDisk.html
:auto_delete, :boot, :device_name, :disk_encryption_key, :disk_size_gb, :guest_os_features, :index,
:initialize_params, :interface, :kind, :licenses, :mode, :shielded_instance_initial_state, :source, :type,
keyword_init: true
)
# --------------------
# Main ComputeService Object
# --------------------
MockComputeServiceConnection = Struct.new(
# https://googleapis.dev/ruby/google-api-client/latest/Google/Apis/ComputeV1/ComputeService.html
:key, :quota_user, :user_ip
) do
# Onlly methods we use are listed here
def get_instance
MockInstance.new
end
# Alias to serviceContent.propertyCollector
def insert_instance
MockResult.new
end
end
# -------------------------------------------------------------------------------------------------------------
# Mocking Methods
# -------------------------------------------------------------------------------------------------------------
=begin
def mock_RbVmomi_VIM_ClusterComputeResource(options = {})
options[:name] = 'Cluster' + rand(65536).to_s if options[:name].nil?
mock = MockClusterComputeResource.new()
mock.name = options[:name]
# All cluster compute resources have a root Resource Pool
mock.resourcePool = mock_RbVmomi_VIM_ResourcePool({:name => options[:name]})
allow(mock).to receive(:is_a?) do |expected_type|
expected_type == RbVmomi::VIM::ClusterComputeResource
end
mock
end
=end

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require 'mock_redis'
def redis
unless @redis
@redis = MockRedis.new
end
@redis
end
# Mock an object which represents a Logger. This stops the proliferation
# of allow(logger).to .... expectations in tests.
class MockLogger
def log(_level, string)
end
end
def expect_json(ok = true, http = 200)
expect(last_response.header['Content-Type']).to eq('application/json')
if (ok == true) then
expect(JSON.parse(last_response.body)['ok']).to eq(true)
else
expect(JSON.parse(last_response.body)['ok']).to eq(false)
end
expect(last_response.status).to eq(http)
end
def create_token(token, user, timestamp)
redis.hset("vmpooler__token__#{token}", 'user', user)
redis.hset("vmpooler__token__#{token}", 'created', timestamp)
end
def get_token_data(token)
redis.hgetall("vmpooler__token__#{token}")
end
def token_exists?(token)
result = get_token_data
result && !result.empty?
end
def create_ready_vm(template, name, redis, token = nil)
create_vm(name, redis, token)
redis.sadd("vmpooler__ready__#{template}", name)
redis.hset("vmpooler__vm__#{name}", "template", template)
end
def create_running_vm(template, name, redis, token = nil, user = nil)
create_vm(name, redis, token, user)
redis.sadd("vmpooler__running__#{template}", name)
redis.hset("vmpooler__vm__#{name}", 'template', template)
redis.hset("vmpooler__vm__#{name}", 'checkout', Time.now)
redis.hset("vmpooler__vm__#{name}", 'host', 'host1')
end
def create_pending_vm(template, name, redis, token = nil)
create_vm(name, redis, token)
redis.sadd("vmpooler__pending__#{template}", name)
redis.hset("vmpooler__vm__#{name}", "template", template)
end
def create_vm(name, redis, token = nil, user = nil)
redis.hset("vmpooler__vm__#{name}", 'checkout', Time.now)
redis.hset("vmpooler__vm__#{name}", 'clone', Time.now)
redis.hset("vmpooler__vm__#{name}", 'token:token', token) if token
redis.hset("vmpooler__vm__#{name}", 'token:user', user) if user
end
def create_completed_vm(name, pool, redis, active = false)
redis.sadd("vmpooler__completed__#{pool}", name)
redis.hset("vmpooler__vm__#{name}", 'checkout', Time.now)
redis.hset("vmpooler__active__#{pool}", name, Time.now) if active
end
def create_discovered_vm(name, pool, redis)
redis.sadd("vmpooler__discovered__#{pool}", name)
end
def create_migrating_vm(name, pool, redis)
redis.hset("vmpooler__vm__#{name}", 'checkout', Time.now)
redis.sadd("vmpooler__migrating__#{pool}", name)
end
def create_tag(vm, tag_name, tag_value, redis)
redis.hset("vmpooler__vm__#{vm}", "tag:#{tag_name}", tag_value)
end
def add_vm_to_migration_set(name, redis)
redis.sadd('vmpooler__migration', name)
end
def fetch_vm(vm)
redis.hgetall("vmpooler__vm__#{vm}")
end
def set_vm_data(vm, key, value, redis)
redis.hset("vmpooler__vm__#{vm}", key, value)
end
def snapshot_revert_vm(vm, snapshot = '12345678901234567890123456789012', redis)
redis.sadd('vmpooler__tasks__snapshot-revert', "#{vm}:#{snapshot}")
redis.hset("vmpooler__vm__#{vm}", "snapshot:#{snapshot}", "1")
end
def snapshot_vm(vm, snapshot = '12345678901234567890123456789012', redis)
redis.sadd('vmpooler__tasks__snapshot', "#{vm}:#{snapshot}")
redis.hset("vmpooler__vm__#{vm}", "snapshot:#{snapshot}", "1")
end
def disk_task_vm(vm, disk_size = '10', redis)
redis.sadd('vmpooler__tasks__disk', "#{vm}:#{disk_size}")
end
def has_vm_snapshot?(vm, redis)
redis.smembers('vmpooler__tasks__snapshot').any? do |snapshot|
instance, _sha = snapshot.split(':')
vm == instance
end
end
def vm_reverted_to_snapshot?(vm, redis, snapshot = nil)
redis.smembers('vmpooler__tasks__snapshot-revert').any? do |action|
instance, sha = action.split(':')
instance == vm and (snapshot ? (sha == snapshot) : true)
end
end
def pool_has_ready_vm?(pool, vm, redis)
!!redis.sismember('vmpooler__ready__' + pool, vm)
end
def create_ondemand_request_for_test(request_id, score, platforms_string, redis, user = nil, token = nil)
redis.zadd('vmpooler__provisioning__request', score, request_id)
redis.hset("vmpooler__odrequest__#{request_id}", 'requested', platforms_string)
redis.hset("vmpooler__odrequest__#{request_id}", 'token:token', token) if token
redis.hset("vmpooler__odrequest__#{request_id}", 'token:user', user) if user
end
def set_ondemand_request_status(request_id, status, redis)
redis.hset("vmpooler__odrequest__#{request_id}", 'status', status)
end
def create_ondemand_vm(vmname, request_id, pool, pool_alias, redis)
redis.sadd("vmpooler__#{request_id}__#{pool_alias}__#{pool}", vmname)
end
def create_ondemand_creationtask(request_string, score, redis)
redis.zadd('vmpooler__odcreate__task', score, request_string)
end
def create_ondemand_processing(request_id, score, redis)
redis.zadd('vmpooler__provisioning__processing', score, request_id)
end

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=begin
require 'simplecov'
SimpleCov.start do
add_filter '/spec/'
end
=end
require 'helpers'
require 'rspec'
require 'vmpooler'
require 'redis'
require 'vmpooler/metrics'
require 'computeservice_helper'
def project_root_dir
File.dirname(File.dirname(__FILE__))
end
def fixtures_dir
File.join(project_root_dir, 'spec', 'fixtures')
end
def create_google_client_error(status_code, message, reason="notFound")
Google::Apis::ClientError.new(Google::Apis::ClientError, status_code:status_code, body:'{
"error": {
"code": '+status_code.to_s+',
"message": "'+message+'",
"errors": [
{
"message": "'+message+'",
"domain": "global",
"reason": "'+reason+'"
}
]
}
}
')
end

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require 'spec_helper'
require 'mock_redis'
require 'vmpooler/providers/gce'
RSpec::Matchers.define :relocation_spec_with_host do |value|
match { |actual| actual[:spec].host == value }
end
describe 'Vmpooler::PoolManager::Provider::Gce' do
let(:logger) { MockLogger.new }
let(:metrics) { Vmpooler::Metrics::DummyStatsd.new }
let(:poolname) { 'pool1' }
let(:provider_options) { { 'param' => 'value' } }
let(:project) { 'dio-samuel-dev' }
let(:zone){ 'us-west1-b' }
let(:config) { YAML.load(<<-EOT
---
:config:
max_tries: 3
retry_factor: 10
:providers:
:gce:
connection_pool_timeout: 1
project: '#{project}'
zone: '#{zone}'
network_name: 'global/networks/default'
:pools:
- name: '#{poolname}'
alias: [ 'mockpool' ]
template: 'projects/debian-cloud/global/images/family/debian-9'
size: 5
timeout: 10
ready_ttl: 1440
provider: 'gce'
network_name: 'default'
machine_type: 'zones/#{zone}/machineTypes/e2-micro'
EOT
)
}
let(:vmname) { 'vm13' }
let(:connection) { MockComputeServiceConnection.new }
let(:redis_connection_pool) { Vmpooler::PoolManager::GenericConnectionPool.new(
metrics: metrics,
connpool_type: 'redis_connection_pool',
connpool_provider: 'testprovider',
size: 1,
timeout: 5
) { MockRedis.new }
}
subject { Vmpooler::PoolManager::Provider::Gce.new(config, logger, metrics, redis_connection_pool, 'gce', provider_options) }
describe '#name' do
it 'should be gce' do
expect(subject.name).to eq('gce')
end
end
describe '#manual tests live' do
skip 'runs in gce' do
puts "creating"
result = subject.create_vm(poolname, vmname)
puts "create disk"
result = subject.create_disk(poolname, vmname, 10)
puts "create snapshot"
result = subject.create_snapshot(poolname, vmname, "sams")
result = subject.create_snapshot(poolname, vmname, "sams2")
puts "revert snapshot"
result = subject.revert_snapshot(poolname, vmname, "sams2")
#result = subject.destroy_vm(poolname, vmname)
end
skip 'runs existing' do
#result = subject.create_snapshot(poolname, vmname, "sams")
#result = subject.revert_snapshot(poolname, vmname, "sams")
#puts subject.get_vm(poolname, vmname)
result = subject.destroy_vm(poolname, vmname)
end
skip 'debug' do
puts subject.purge_unconfigured_folders(nil, nil, ['foo', '', 'blah'])
end
end
describe '#vms_in_pool' do
let(:pool_config) { config[:pools][0] }
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'Given an empty pool folder' do
it 'should return an empty array' do
instance_list = MockInstanceList.new(items: nil)
allow(connection).to receive(:list_instances).and_return(instance_list)
result = subject.vms_in_pool(poolname)
expect(result).to eq([])
end
end
context 'Given a pool folder with many VMs' do
let(:expected_vm_list) {[
{ 'name' => 'vm1'},
{ 'name' => 'vm2'},
{ 'name' => 'vm3'}
]}
before(:each) do
instance_list = MockInstanceList.new(items: [])
expected_vm_list.each do |vm_hash|
mock_vm = MockInstance.new(name: vm_hash['name'])
instance_list.items << mock_vm
end
expect(connection).to receive(:list_instances).and_return(instance_list)
end
it 'should list all VMs in the VM folder for the pool' do
result = subject.vms_in_pool(poolname)
expect(result).to eq(expected_vm_list)
end
end
end
describe '#get_vm' do
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'when VM does not exist' do
it 'should return nil' do
allow(connection).to receive(:get_instance).and_raise(create_google_client_error(404,"The resource 'projects/#{project}/zones/#{zone}/instances/#{vmname}' was not found"))
expect(subject.get_vm(poolname,vmname)).to be_nil
end
end
context 'when VM exists but is missing information' do
before(:each) do
allow(connection).to receive(:get_instance).and_return(MockInstance.new(name: vmname))
end
it 'should return a hash' do
expect(subject.get_vm(poolname,vmname)).to be_kind_of(Hash)
end
it 'should return the VM name' do
result = subject.get_vm(poolname,vmname)
expect(result['name']).to eq(vmname)
end
['hostname','boottime','zone','status'].each do |testcase|
it "should return nil for #{testcase}" do
result = subject.get_vm(poolname,vmname)
expect(result[testcase]).to be_nil
end
end
end
context 'when VM exists and contains all information' do
let(:vm_hostname) { "#{vmname}.demo.local" }
let(:boot_time) { Time.now }
let(:vm_object) { MockInstance.new(
name: vmname,
hostname: vm_hostname,
labels: {'pool' => poolname},
creation_timestamp: boot_time,
status: 'RUNNING',
zone: zone,
machine_type: "zones/#{zone}/machineTypes/e2-micro"
)
}
let(:pool_info) { config[:pools][0]}
before(:each) do
allow(connection).to receive(:get_instance).and_return(vm_object)
end
it 'should return a hash' do
expect(subject.get_vm(poolname,vmname)).to be_kind_of(Hash)
end
it 'should return the VM name' do
result = subject.get_vm(poolname,vmname)
expect(result['name']).to eq(vmname)
end
it 'should return the VM hostname' do
result = subject.get_vm(poolname,vmname)
expect(result['hostname']).to eq(vm_hostname)
end
it 'should return the template name' do
result = subject.get_vm(poolname,vmname)
expect(result['template']).to eq(pool_info['template'])
end
it 'should return the pool name' do
result = subject.get_vm(poolname,vmname)
expect(result['poolname']).to eq(pool_info['name'])
end
it 'should return the boot time' do
result = subject.get_vm(poolname,vmname)
expect(result['boottime']).to eq(boot_time)
end
end
end
describe '#create_vm' do
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'Given an invalid pool name' do
it 'should raise an error' do
expect{ subject.create_vm('missing_pool', vmname) }.to raise_error(/missing_pool does not exist/)
end
end
context 'Given a template VM that does not exist' do
before(:each) do
config[:pools][0]['template'] = 'Templates/missing_template'
=begin
result = MockResult.new
result.status = "PENDING"
errors = MockOperationError
errors << MockOperationErrorError.new(code: "foo", message: "it's missing")
result.error = errors
=end
allow(connection).to receive(:insert_instance).and_raise(create_google_client_error(404,'The resource \'Templates/missing_template\' was not found'))
end
it 'should raise an error' do
expect{ subject.create_vm(poolname, vmname) }.to raise_error(Google::Apis::ClientError, /The resource .+ was not found/)
end
end
context 'Given a successful creation' do
before(:each) do
result = MockResult.new
result.status = "DONE"
allow(connection).to receive(:insert_instance).and_return(result)
end
it 'should return a hash' do
allow(connection).to receive(:get_instance).and_return(MockInstance.new)
result = subject.create_vm(poolname, vmname)
expect(result.is_a?(Hash)).to be true
end
it 'should have the new VM name' do
instance = MockInstance.new(name: vmname)
allow(connection).to receive(:get_instance).and_return(instance)
result = subject.create_vm(poolname, vmname)
expect(result['name']).to eq(vmname)
end
end
end
describe '#destroy_vm' do
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'Given a missing VM name' do
before(:each) do
allow(connection).to receive(:get_instance).and_raise(create_google_client_error(404,"The resource 'projects/#{project}/zones/#{zone}/instances/#{vmname}' was not found"))
end
it 'should return true' do
expect(subject.destroy_vm(poolname, 'missing_vm')).to be true
end
end
context 'Given a running VM' do
before(:each) do
instance = MockInstance.new(name: vmname)
allow(connection).to receive(:get_instance).and_return(instance)
result = MockResult.new
result.status = "DONE"
allow(subject).to receive(:wait_for_operation).and_return(result)
allow(connection).to receive(:delete_instance).and_return(result)
end
it 'should return true' do
# no dangling disks
disk_list = MockDiskList.new(items: nil)
allow(connection).to receive(:list_disks).and_return(disk_list)
# no dangling snapshots
allow(subject).to receive(:find_all_snapshots).and_return(nil)
expect(subject.destroy_vm(poolname, vmname)).to be true
end
it 'should delete any dangling disks' do
disk = MockDisk.new(name: vmname)
disk_list = MockDiskList.new(items: [disk])
allow(connection).to receive(:list_disks).and_return(disk_list)
# no dangling snapshots
allow(subject).to receive(:find_all_snapshots).and_return(nil)
expect(connection).to receive(:delete_disk).with(project, zone, disk.name)
subject.destroy_vm(poolname, vmname)
end
it 'should delete any dangling snapshots' do
# no dangling disks
disk_list = MockDiskList.new(items: nil)
allow(connection).to receive(:list_disks).and_return(disk_list)
snapshot = MockSnapshot.new(name: "snapshotname-#{vmname}")
allow(subject).to receive(:find_all_snapshots).and_return([snapshot])
expect(connection).to receive(:delete_snapshot).with(project, snapshot.name)
subject.destroy_vm(poolname, vmname)
end
end
end
describe '#vm_ready?' do
let(:domain) { nil }
context 'When a VM is ready' do
before(:each) do
expect(subject).to receive(:open_socket).with(vmname, domain)
end
it 'should return true' do
expect(subject.vm_ready?(poolname,vmname)).to be true
end
end
context 'When an error occurs connecting to the VM' do
before(:each) do
expect(subject).to receive(:open_socket).and_raise(RuntimeError,'MockError')
end
it 'should return false' do
expect(subject.vm_ready?(poolname,vmname)).to be false
end
end
end
describe '#create_disk' do
let(:disk_size) { 10 }
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'Given an invalid pool name' do
it 'should raise an error' do
expect{ subject.create_disk('missing_pool',vmname,disk_size) }.to raise_error(/missing_pool does not exist/)
end
end
context 'when VM does not exist' do
before(:each) do
expect(connection).to receive(:get_instance).and_raise(create_google_client_error(404,"The resource 'projects/#{project}/zones/#{zone}/instances/#{vmname}' was not found"))
end
it 'should raise an error' do
expect{ subject.create_disk(poolname,vmname,disk_size) }.to raise_error(/VM #{vmname} .+ does not exist/)
end
end
context 'when adding the disk raises an error' do
before(:each) do
disk = MockDisk.new(name: vmname)
instance = MockInstance.new(name: vmname, disks: [disk])
allow(connection).to receive(:get_instance).and_return(instance)
expect(connection).to receive(:insert_disk).and_raise(RuntimeError,'Mock Disk Error')
end
it 'should raise an error' do
expect{ subject.create_disk(poolname,vmname,disk_size) }.to raise_error(/Mock Disk Error/)
end
end
context 'when adding the disk succeeds' do
before(:each) do
disk = MockDisk.new(name: vmname)
instance = MockInstance.new(name: vmname, disks: [disk])
allow(connection).to receive(:get_instance).and_return(instance)
result = MockResult.new
result.status = "DONE"
allow(connection).to receive(:insert_disk).and_return(result)
allow(subject).to receive(:wait_for_operation).and_return(result)
new_disk = MockDisk.new(name: "#{vmname}-disk1", self_link: "/foo/bar/baz/#{vmname}-disk1")
allow(connection).to receive(:get_disk).and_return(new_disk)
allow(connection).to receive(:attach_disk).and_return(result)
end
it 'should return true' do
expect(subject.create_disk(poolname,vmname,disk_size)).to be true
end
end
end
describe '#create_snapshot' do
let(:snapshot_name) { 'snapshot' }
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'when VM does not exist' do
before(:each) do
allow(connection).to receive(:get_instance).and_raise(create_google_client_error(404,"The resource 'projects/#{project}/zones/#{zone}/instances/#{vmname}' was not found"))
end
it 'should raise an error' do
expect{ subject.create_snapshot(poolname,vmname,snapshot_name) }.to raise_error(/VM #{vmname} .+ does not exist/)
end
end
context 'when snapshot already exists' do
it 'should raise an error' do
disk = MockDisk.new(name: vmname)
instance = MockInstance.new(name: vmname, disks: [disk])
allow(connection).to receive(:get_instance).and_return(instance)
snapshots = [MockSnapshot.new(name: snapshot_name)]
allow(subject).to receive(:find_snapshot).and_return(snapshots)
expect{ subject.create_snapshot(poolname,vmname,snapshot_name) }.to raise_error(/Snapshot #{snapshot_name} .+ already exists /)
end
end
context 'when snapshot raises an error' do
before(:each) do
attached_disk = MockAttachedDisk.new(device_name: vmname, source: "foo/bar/baz/#{vmname}")
instance = MockInstance.new(name: vmname, disks: [attached_disk])
allow(connection).to receive(:get_instance).and_return(instance)
snapshots = nil
allow(subject).to receive(:find_snapshot).and_return(snapshots)
allow(connection).to receive(:create_disk_snapshot).and_raise(RuntimeError,'Mock Snapshot Error')
end
it 'should raise an error' do
expect{ subject.create_snapshot(poolname,vmname,snapshot_name) }.to raise_error(/Mock Snapshot Error/)
end
end
context 'when snapshot succeeds' do
before(:each) do
attached_disk = MockAttachedDisk.new(device_name: vmname, source: "foo/bar/baz/#{vmname}")
instance = MockInstance.new(name: vmname, disks: [attached_disk])
allow(connection).to receive(:get_instance).and_return(instance)
snapshots = nil
allow(subject).to receive(:find_snapshot).and_return(snapshots)
result = MockResult.new
result.status = "DONE"
allow(connection).to receive(:create_disk_snapshot).and_return(result)
end
it 'should return true' do
expect(subject.create_snapshot(poolname,vmname,snapshot_name)).to be true
end
it 'should snapshot each attached disk' do
attached_disk = MockAttachedDisk.new(device_name: vmname, source: "foo/bar/baz/#{vmname}")
attached_disk2 = MockAttachedDisk.new(device_name: vmname, source: "foo/bar/baz/#{vmname}-disk1")
instance = MockInstance.new(name: vmname, disks: [attached_disk, attached_disk2])
allow(connection).to receive(:get_instance).and_return(instance)
expect(connection.should_receive(:create_disk_snapshot).twice)
subject.create_snapshot(poolname,vmname,snapshot_name)
end
end
end
describe '#revert_snapshot' do
let(:snapshot_name) { 'snapshot' }
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'when VM does not exist' do
before(:each) do
allow(connection).to receive(:get_instance).and_raise(create_google_client_error(404,"The resource 'projects/#{project}/zones/#{zone}/instances/#{vmname}' was not found"))
end
it 'should raise an error' do
expect{ subject.revert_snapshot(poolname,vmname,snapshot_name) }.to raise_error(/VM #{vmname} .+ does not exist/)
end
end
context 'when snapshot does not exist' do
it 'should raise an error' do
attached_disk = MockAttachedDisk.new(device_name: vmname, source: "foo/bar/baz/#{vmname}")
instance = MockInstance.new(name: vmname, disks: [attached_disk])
allow(connection).to receive(:get_instance).and_return(instance)
snapshots = nil
allow(subject).to receive(:find_snapshot).and_return(snapshots)
expect{ subject.revert_snapshot(poolname,vmname,snapshot_name) }.to raise_error(/Snapshot #{snapshot_name} .+ does not exist /)
end
end
context 'when instance does not have attached disks' do
it 'should raise an error' do
disk = nil
instance = MockInstance.new(name: vmname, disks: [disk])
allow(connection).to receive(:get_instance).and_return(instance)
snapshots = [MockSnapshot.new(name: snapshot_name)]
allow(subject).to receive(:find_snapshot).and_return(snapshots)
allow(connection).to receive(:stop_instance)
allow(subject).to receive(:wait_for_operation)
expect{ subject.revert_snapshot(poolname,vmname,snapshot_name) }.to raise_error(/No disk is currently attached to VM #{vmname} in pool #{poolname}, cannot revert snapshot/)
end
end
context 'when revert to snapshot raises an error' do
before(:each) do
attached_disk = MockAttachedDisk.new(device_name: vmname, source: "foo/bar/baz/#{vmname}")
instance = MockInstance.new(name: vmname, disks: [attached_disk])
allow(connection).to receive(:get_instance).and_return(instance)
snapshots = [MockSnapshot.new(name: snapshot_name)]
allow(subject).to receive(:find_snapshot).and_return(snapshots)
allow(connection).to receive(:stop_instance)
allow(subject).to receive(:wait_for_operation)
expect(connection).to receive(:detach_disk).and_raise(RuntimeError,'Mock Snapshot Error')
end
it 'should raise an error' do
expect{ subject.revert_snapshot(poolname,vmname,snapshot_name) }.to raise_error(/Mock Snapshot Error/)
end
end
context 'when revert to snapshot succeeds' do
before(:each) do
attached_disk = MockAttachedDisk.new(device_name: vmname, source: "foo/bar/baz/#{vmname}")
instance = MockInstance.new(name: vmname, disks: [attached_disk])
allow(connection).to receive(:get_instance).and_return(instance)
snapshots = [MockSnapshot.new(name: snapshot_name, self_link: "foo/bar/baz/snapshot/#{snapshot_name}")]
allow(subject).to receive(:find_snapshot).and_return(snapshots)
allow(connection).to receive(:stop_instance)
allow(subject).to receive(:wait_for_operation)
allow(connection).to receive(:detach_disk)
allow(connection).to receive(:delete_disk)
allow(connection).to receive(:get_snapshot).and_return(snapshots[0])
new_disk = MockDisk.new(name: vmname, self_link: "foo/bar/baz/disk/#{vmname}")
allow(connection).to receive(:insert_disk)
allow(connection).to receive(:get_disk).and_return(new_disk)
allow(connection).to receive(:attach_disk)
allow(connection).to receive(:start_instance)
end
it 'should return true' do
expect(subject.revert_snapshot(poolname,vmname,snapshot_name)).to be true
end
end
end
#TODO: below are todo
describe '#purge_unconfigured_folders' do
let(:folder_title) { 'folder1' }
let(:base_folder) { 'dc1/vm/base' }
let(:folder_object) { mock_RbVmomi_VIM_Folder({ :name => base_folder }) }
let(:child_folder) { mock_RbVmomi_VIM_Folder({ :name => folder_title }) }
let(:whitelist) { nil }
let(:base_folders) { [ base_folder ] }
let(:configured_folders) { { folder_title => base_folder } }
let(:folder_children) { [ folder_title => child_folder ] }
let(:empty_list) { [] }
before(:each) do
allow(subject).to receive(:connect_to_gce).and_return(connection)
end
context 'with an empty folder' do
skip 'should not attempt to destroy any folders' do
expect(subject).to receive(:get_folder_children).with(base_folder, connection).and_return(empty_list)
expect(subject).to_not receive(:destroy_folder_and_children)
subject.purge_unconfigured_folders(base_folders, configured_folders, whitelist)
end
end
skip 'should retrieve the folder children' do
expect(subject).to receive(:get_folder_children).with(base_folder, connection).and_return(folder_children)
allow(subject).to receive(:folder_configured?).and_return(true)
subject.purge_unconfigured_folders(base_folders, configured_folders, whitelist)
end
context 'with a folder that is not configured' do
before(:each) do
expect(subject).to receive(:get_folder_children).with(base_folder, connection).and_return(folder_children)
allow(subject).to receive(:folder_configured?).and_return(false)
end
skip 'should destroy the folder and children' do
expect(subject).to receive(:destroy_folder_and_children).with(child_folder).and_return(nil)
subject.purge_unconfigured_folders(base_folders, configured_folders, whitelist)
end
end
skip 'should raise any errors' do
expect(subject).to receive(:get_folder_children).and_throw('mockerror')
expect{ subject.purge_unconfigured_folders(base_folders, configured_folders, whitelist) }.to raise_error(/mockerror/)
end
end
end

0
vmpooler-vsphere-provider.gemspec → vmpooler-provider-gce.gemspec
View file

2
vmpooler.yaml.example
View file

@ -95,7 +95,7 @@
# (optional)
#
# - template
# The template or virtual machine target to spawn clones from.
# The template or virtual machine target to spawn clones from. eg projects/debian-cloud/global/images/family/debian-9
# (required)
#
# - size