debian-mirror-gitlab/spec/lib/gitlab/gitaly_client_spec.rb
2020-03-13 15:44:24 +05:30

532 lines
18 KiB
Ruby

# frozen_string_literal: true
require 'spec_helper'
# We stub Gitaly in `spec/support/gitaly.rb` for other tests. We don't want
# those stubs while testing the GitalyClient itself.
describe Gitlab::GitalyClient do
let(:sample_cert) { Rails.root.join('spec/fixtures/clusters/sample_cert.pem').to_s }
before do
allow(described_class)
.to receive(:stub_cert_paths)
.and_return([sample_cert])
end
def stub_repos_storages(address)
allow(Gitlab.config.repositories).to receive(:storages).and_return({
'default' => { 'gitaly_address' => address }
})
end
describe '.long_timeout' do
context 'default case' do
it { expect(subject.long_timeout).to eq(6.hours) }
end
context 'running in Unicorn' do
before do
allow(Gitlab::Runtime).to receive(:unicorn?).and_return(true)
end
it { expect(subject.long_timeout).to eq(55) }
end
context 'running in Puma' do
before do
allow(Gitlab::Runtime).to receive(:puma?).and_return(true)
end
it { expect(subject.long_timeout).to eq(55) }
end
end
describe '.filesystem_id_from_disk' do
it 'catches errors' do
[Errno::ENOENT, Errno::EACCES, JSON::ParserError].each do |error|
allow(File).to receive(:read).with(described_class.storage_metadata_file_path('default')).and_raise(error)
expect(described_class.filesystem_id_from_disk('default')).to be_nil
end
end
end
describe '.filesystem_id' do
it 'returns an empty string when the relevant storage status is not found in the response' do
response = double("response")
allow(response).to receive(:storage_statuses).and_return([])
allow_next_instance_of(Gitlab::GitalyClient::ServerService) do |instance|
allow(instance).to receive(:info).and_return(response)
end
expect(described_class.filesystem_id('default')).to eq(nil)
end
end
context 'when the relevant storage status is not found' do
before do
response = double('response')
allow(response).to receive(:storage_statuses).and_return([])
allow_next_instance_of(Gitlab::GitalyClient::ServerService) do |instance|
allow(instance).to receive(:disk_statistics).and_return(response)
expect(instance).to receive(:storage_disk_statistics)
end
end
describe '.filesystem_disk_available' do
it 'returns nil when the relevant storage status is not found in the response' do
expect(described_class.filesystem_disk_available('default')).to eq(nil)
end
end
describe '.filesystem_disk_used' do
it 'returns nil when the relevant storage status is not found in the response' do
expect(described_class.filesystem_disk_used('default')).to eq(nil)
end
end
end
context 'when the relevant storage status is found' do
let(:disk_available) { 42 }
let(:disk_used) { 42 }
let(:storage_status) { double('storage_status') }
before do
allow(storage_status).to receive(:storage_name).and_return('default')
allow(storage_status).to receive(:used).and_return(disk_used)
allow(storage_status).to receive(:available).and_return(disk_available)
response = double('response')
allow(response).to receive(:storage_statuses).and_return([storage_status])
allow_next_instance_of(Gitlab::GitalyClient::ServerService) do |instance|
allow(instance).to receive(:disk_statistics).and_return(response)
end
expect_next_instance_of(Gitlab::GitalyClient::ServerService) do |instance|
expect(instance).to receive(:storage_disk_statistics).and_return(storage_status)
end
end
describe '.filesystem_disk_available' do
it 'returns disk available when the relevant storage status is found in the response' do
expect(storage_status).to receive(:available)
expect(described_class.filesystem_disk_available('default')).to eq(disk_available)
end
end
describe '.filesystem_disk_used' do
it 'returns disk used when the relevant storage status is found in the response' do
expect(storage_status).to receive(:used)
expect(described_class.filesystem_disk_used('default')).to eq(disk_used)
end
end
end
describe '.stub_class' do
it 'returns the gRPC health check stub' do
expect(described_class.stub_class(:health_check)).to eq(::Grpc::Health::V1::Health::Stub)
end
it 'returns a Gitaly stub' do
expect(described_class.stub_class(:ref_service)).to eq(::Gitaly::RefService::Stub)
end
end
describe '.stub_address' do
it 'returns the same result after being called multiple times' do
address = 'tcp://localhost:9876'
stub_repos_storages address
2.times do
expect(described_class.stub_address('default')).to eq('localhost:9876')
end
end
end
describe '.stub_certs' do
it 'skips certificates if OpenSSLError is raised and report it' do
expect(Gitlab::ErrorTracking)
.to receive(:track_and_raise_for_dev_exception)
.with(
a_kind_of(OpenSSL::X509::CertificateError),
cert_file: a_kind_of(String)).at_least(:once)
expect(OpenSSL::X509::Certificate)
.to receive(:new)
.and_raise(OpenSSL::X509::CertificateError).at_least(:once)
expect(described_class.stub_certs).to be_a(String)
end
end
describe '.stub_creds' do
it 'returns :this_channel_is_insecure if unix' do
address = 'unix:/tmp/gitaly.sock'
stub_repos_storages address
expect(described_class.stub_creds('default')).to eq(:this_channel_is_insecure)
end
it 'returns :this_channel_is_insecure if tcp' do
address = 'tcp://localhost:9876'
stub_repos_storages address
expect(described_class.stub_creds('default')).to eq(:this_channel_is_insecure)
end
it 'returns Credentials object if tls' do
address = 'tls://localhost:9876'
stub_repos_storages address
expect(described_class.stub_creds('default')).to be_a(GRPC::Core::ChannelCredentials)
end
end
describe '.stub' do
# Notice that this is referring to gRPC "stubs", not rspec stubs
before do
described_class.clear_stubs!
end
context 'when passed a UNIX socket address' do
it 'passes the address as-is to GRPC' do
address = 'unix:/tmp/gitaly.sock'
stub_repos_storages address
expect(Gitaly::CommitService::Stub).to receive(:new).with(address, any_args)
described_class.stub(:commit_service, 'default')
end
end
context 'when passed a TLS address' do
it 'strips tls:// prefix before passing it to GRPC::Core::Channel initializer' do
address = 'localhost:9876'
prefixed_address = "tls://#{address}"
stub_repos_storages prefixed_address
expect(Gitaly::CommitService::Stub).to receive(:new).with(address, any_args)
described_class.stub(:commit_service, 'default')
end
end
context 'when passed a TCP address' do
it 'strips tcp:// prefix before passing it to GRPC::Core::Channel initializer' do
address = 'localhost:9876'
prefixed_address = "tcp://#{address}"
stub_repos_storages prefixed_address
expect(Gitaly::CommitService::Stub).to receive(:new).with(address, any_args)
described_class.stub(:commit_service, 'default')
end
end
end
describe '.can_use_disk?' do
it 'properly caches a false result' do
# spec_helper stubs this globally
allow(described_class).to receive(:can_use_disk?).and_call_original
expect(described_class).to receive(:filesystem_id).once
expect(described_class).to receive(:filesystem_id_from_disk).once
2.times do
described_class.can_use_disk?('unknown')
end
end
end
describe '.connection_data' do
it 'returns connection data' do
address = 'tcp://localhost:9876'
stub_repos_storages address
expect(described_class.connection_data('default')).to eq({ 'address' => address, 'token' => 'secret' })
end
end
describe 'allow_n_plus_1_calls' do
context 'when RequestStore is enabled', :request_store do
it 'returns the result of the allow_n_plus_1_calls block' do
expect(described_class.allow_n_plus_1_calls { "result" }).to eq("result")
end
end
context 'when RequestStore is not active' do
it 'returns the result of the allow_n_plus_1_calls block' do
expect(described_class.allow_n_plus_1_calls { "something" }).to eq("something")
end
end
end
describe '.request_kwargs' do
context 'when catfile-cache feature is enabled' do
before do
stub_feature_flags('gitaly_catfile-cache': true)
end
it 'sets the gitaly-session-id in the metadata' do
results = described_class.request_kwargs('default', timeout: 1)
expect(results[:metadata]).to include('gitaly-session-id')
end
context 'when RequestStore is not enabled' do
it 'sets a different gitaly-session-id per request' do
gitaly_session_id = described_class.request_kwargs('default', timeout: 1)[:metadata]['gitaly-session-id']
expect(described_class.request_kwargs('default', timeout: 1)[:metadata]['gitaly-session-id']).not_to eq(gitaly_session_id)
end
end
context 'when RequestStore is enabled', :request_store do
it 'sets the same gitaly-session-id on every outgoing request metadata' do
gitaly_session_id = described_class.request_kwargs('default', timeout: 1)[:metadata]['gitaly-session-id']
3.times do
expect(described_class.request_kwargs('default', timeout: 1)[:metadata]['gitaly-session-id']).to eq(gitaly_session_id)
end
end
end
end
context 'deadlines', :request_store do
let(:request_deadline) { real_time + 10.0 }
before do
allow(Gitlab::RequestContext.instance).to receive(:request_deadline).and_return(request_deadline)
end
it 'includes the deadline information' do
kword_args = described_class.request_kwargs('default', timeout: 2)
expect(kword_args[:deadline])
.to be_within(1).of(real_time + 2)
expect(kword_args[:metadata][:deadline_type]).to eq("regular")
end
it 'limits the deadline do the request deadline if that is closer', :aggregate_failures do
kword_args = described_class.request_kwargs('default', timeout: 15)
expect(kword_args[:deadline]).to eq(request_deadline)
expect(kword_args[:metadata][:deadline_type]).to eq("limited")
end
it 'does not limit calls in sidekiq' do
expect(Sidekiq).to receive(:server?).and_return(true)
kword_args = described_class.request_kwargs('default', timeout: 6.hours.to_i)
expect(kword_args[:deadline]).to be_within(1).of(real_time + 6.hours.to_i)
expect(kword_args[:metadata][:deadline_type]).to be_nil
end
it 'does not limit calls in sidekiq when allowed unlimited' do
expect(Sidekiq).to receive(:server?).and_return(true)
kword_args = described_class.request_kwargs('default', timeout: 0)
expect(kword_args[:deadline]).to be_nil
expect(kword_args[:metadata][:deadline_type]).to be_nil
end
it 'includes only the deadline specified by the timeout when there was no deadline' do
allow(Gitlab::RequestContext.instance).to receive(:request_deadline).and_return(nil)
kword_args = described_class.request_kwargs('default', timeout: 6.hours.to_i)
expect(kword_args[:deadline]).to be_within(1).of(Gitlab::Metrics::System.real_time + 6.hours.to_i)
expect(kword_args[:metadata][:deadline_type]).to be_nil
end
def real_time
Gitlab::Metrics::System.real_time
end
end
end
describe 'enforce_gitaly_request_limits?' do
def call_gitaly(count = 1)
(1..count).each do
described_class.enforce_gitaly_request_limits(:test)
end
end
context 'when RequestStore is enabled and the maximum number of calls is not enforced by a feature flag', :request_store do
before do
stub_feature_flags(gitaly_enforce_requests_limits: false)
end
it 'allows up the maximum number of allowed calls' do
expect { call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS) }.not_to raise_error
end
it 'allows the maximum number of calls to be exceeded if GITALY_DISABLE_REQUEST_LIMITS is set' do
stub_env('GITALY_DISABLE_REQUEST_LIMITS', 'true')
expect { call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS + 1) }.not_to raise_error
end
context 'when the maximum number of calls has been reached' do
before do
call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS)
end
it 'fails on the next call' do
expect { call_gitaly(1) }.to raise_error(Gitlab::GitalyClient::TooManyInvocationsError)
end
end
it 'allows the maximum number of calls to be exceeded within an allow_n_plus_1_calls block' do
expect do
described_class.allow_n_plus_1_calls do
call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS + 1)
end
end.not_to raise_error
end
context 'when the maximum number of calls has been reached within an allow_n_plus_1_calls block' do
before do
described_class.allow_n_plus_1_calls do
call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS)
end
end
it 'allows up to the maximum number of calls outside of an allow_n_plus_1_calls block' do
expect { call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS) }.not_to raise_error
end
it 'does not allow the maximum number of calls to be exceeded outside of an allow_n_plus_1_calls block' do
expect { call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS + 1) }.to raise_error(Gitlab::GitalyClient::TooManyInvocationsError)
end
end
end
context 'in production and when RequestStore is enabled', :request_store do
before do
stub_rails_env('production')
end
context 'when the maximum number of calls is enforced by a feature flag' do
before do
stub_feature_flags(gitaly_enforce_requests_limits: true)
end
it 'does not allow the maximum number of calls to be exceeded' do
expect { call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS + 1) }.to raise_error(Gitlab::GitalyClient::TooManyInvocationsError)
end
end
context 'when the maximum number of calls is not enforced by a feature flag' do
before do
stub_feature_flags(gitaly_enforce_requests_limits: false)
end
it 'allows the maximum number of calls to be exceeded' do
expect { call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS + 1) }.not_to raise_error
end
end
end
context 'when RequestStore is not active' do
it 'does not raise errors when the maximum number of allowed calls is exceeded' do
expect { call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS + 2) }.not_to raise_error
end
it 'does not fail when the maximum number of calls is exceeded within an allow_n_plus_1_calls block' do
expect do
described_class.allow_n_plus_1_calls do
call_gitaly(Gitlab::GitalyClient::MAXIMUM_GITALY_CALLS + 1)
end
end.not_to raise_error
end
end
end
describe 'get_request_count' do
context 'when RequestStore is enabled', :request_store do
context 'when enforce_gitaly_request_limits is called outside of allow_n_plus_1_calls blocks' do
before do
described_class.enforce_gitaly_request_limits(:call)
end
it 'counts gitaly calls' do
expect(described_class.get_request_count).to eq(1)
end
end
context 'when enforce_gitaly_request_limits is called inside and outside of allow_n_plus_1_calls blocks' do
before do
described_class.enforce_gitaly_request_limits(:call)
described_class.allow_n_plus_1_calls do
described_class.enforce_gitaly_request_limits(:call)
end
end
it 'counts gitaly calls' do
expect(described_class.get_request_count).to eq(2)
end
end
context 'when reset_counts is called' do
before do
described_class.enforce_gitaly_request_limits(:call)
described_class.reset_counts
end
it 'resets counts' do
expect(described_class.get_request_count).to eq(0)
end
end
end
context 'when RequestStore is not active' do
before do
described_class.enforce_gitaly_request_limits(:call)
end
it 'returns zero' do
expect(described_class.get_request_count).to eq(0)
end
end
end
describe 'timeouts' do
context 'with default values' do
before do
stub_application_setting(gitaly_timeout_default: 55)
stub_application_setting(gitaly_timeout_medium: 30)
stub_application_setting(gitaly_timeout_fast: 10)
end
it 'returns expected values' do
expect(described_class.default_timeout).to be(55)
expect(described_class.medium_timeout).to be(30)
expect(described_class.fast_timeout).to be(10)
end
end
end
describe 'Peek Performance bar details' do
let(:gitaly_server) { Gitaly::Server.all.first }
before do
Gitlab::SafeRequestStore[:peek_enabled] = true
end
context 'when the request store is active', :request_store do
it 'records call details if a RPC is called' do
expect(described_class).to receive(:measure_timings).and_call_original
gitaly_server.server_version
expect(described_class.list_call_details).not_to be_empty
expect(described_class.list_call_details.size).to be(1)
end
end
context 'when no request store is active' do
it 'records nothing' do
gitaly_server.server_version
expect(described_class.list_call_details).to be_empty
end
end
end
end