debian-mirror-gitlab/spec/services/web_hook_service_spec.rb
2022-04-04 11:22:00 +05:30

587 lines
20 KiB
Ruby

# frozen_string_literal: true
require 'spec_helper'
RSpec.describe WebHookService, :request_store, :clean_gitlab_redis_shared_state do
include StubRequests
let_it_be(:project) { create(:project) }
let_it_be_with_reload(:project_hook) { create(:project_hook, project: project) }
let(:data) do
{ before: 'oldrev', after: 'newrev', ref: 'ref' }
end
let(:service_instance) { described_class.new(project_hook, data, :push_hooks) }
around do |example|
travel_to(Time.current) { example.run }
end
describe '#initialize' do
before do
stub_application_setting(setting_name => setting)
end
shared_examples_for 'respects outbound network setting' do
context 'when local requests are allowed' do
let(:setting) { true }
it { expect(hook.request_options[:allow_local_requests]).to be_truthy }
end
context 'when local requests are not allowed' do
let(:setting) { false }
it { expect(hook.request_options[:allow_local_requests]).to be_falsey }
end
end
context 'when SystemHook' do
let(:setting_name) { :allow_local_requests_from_system_hooks }
let(:hook) { described_class.new(build(:system_hook), data, :system_hook) }
include_examples 'respects outbound network setting'
end
context 'when ProjectHook' do
let(:setting_name) { :allow_local_requests_from_web_hooks_and_services }
let(:hook) { described_class.new(build(:project_hook), data, :project_hook) }
include_examples 'respects outbound network setting'
end
end
describe '#disabled?' do
using RSpec::Parameterized::TableSyntax
subject { described_class.new(hook, data, :push_hooks, force: forced) }
let(:hook) { double(executable?: executable, allow_local_requests?: false) }
where(:forced, :executable, :disabled) do
false | true | false
false | false | true
true | true | false
true | false | false
end
with_them do
it { is_expected.to have_attributes(disabled?: disabled) }
end
end
describe '#execute' do
let!(:uuid) { SecureRandom.uuid }
let(:headers) do
{
'Content-Type' => 'application/json',
'User-Agent' => "GitLab/#{Gitlab::VERSION}",
'X-Gitlab-Event' => 'Push Hook',
'X-Gitlab-Event-UUID' => uuid
}
end
before do
# Set a stable value for the `X-Gitlab-Event-UUID` header.
Gitlab::WebHooks::RecursionDetection.set_request_uuid(uuid)
end
context 'when token is defined' do
let_it_be(:project_hook) { create(:project_hook, :token) }
it 'POSTs to the webhook URL' do
stub_full_request(project_hook.url, method: :post)
service_instance.execute
expect(WebMock).to have_requested(:post, stubbed_hostname(project_hook.url)).with(
headers: headers.merge({ 'X-Gitlab-Token' => project_hook.token })
).once
end
end
it 'POSTs the data as JSON' do
stub_full_request(project_hook.url, method: :post)
service_instance.execute
expect(WebMock).to have_requested(:post, stubbed_hostname(project_hook.url)).with(
headers: headers
).once
end
context 'when auth credentials are present' do
let_it_be(:url) {'https://example.org'}
let_it_be(:project_hook) { create(:project_hook, url: 'https://demo:demo@example.org/') }
it 'uses the credentials' do
stub_full_request(url, method: :post)
service_instance.execute
expect(WebMock).to have_requested(:post, stubbed_hostname(url)).with(
headers: headers.merge('Authorization' => 'Basic ZGVtbzpkZW1v')
).once
end
end
context 'when auth credentials are partial present' do
let_it_be(:url) {'https://example.org'}
let_it_be(:project_hook) { create(:project_hook, url: 'https://demo@example.org/') }
it 'uses the credentials anyways' do
stub_full_request(url, method: :post)
service_instance.execute
expect(WebMock).to have_requested(:post, stubbed_hostname(url)).with(
headers: headers.merge('Authorization' => 'Basic ZGVtbzo=')
).once
end
end
it 'catches exceptions' do
stub_full_request(project_hook.url, method: :post).to_raise(StandardError.new('Some error'))
expect { service_instance.execute }.to raise_error(StandardError)
end
it 'does not execute disabled hooks' do
allow(service_instance).to receive(:disabled?).and_return(true)
expect(service_instance.execute).to eq({ status: :error, message: 'Hook disabled' })
end
it 'executes and registers the hook with the recursion detection', :aggregate_failures do
stub_full_request(project_hook.url, method: :post)
cache_key = Gitlab::WebHooks::RecursionDetection.send(:cache_key_for_hook, project_hook)
::Gitlab::Redis::SharedState.with do |redis|
expect { service_instance.execute }.to change {
redis.sismember(cache_key, project_hook.id)
}.to(true)
end
expect(WebMock).to have_requested(:post, stubbed_hostname(project_hook.url))
.with(headers: headers)
.once
end
it 'blocks and logs if a recursive web hook is detected', :aggregate_failures do
stub_full_request(project_hook.url, method: :post)
Gitlab::WebHooks::RecursionDetection.register!(project_hook)
expect(Gitlab::AuthLogger).to receive(:error).with(
include(
message: 'Recursive webhook blocked from executing',
hook_id: project_hook.id,
hook_type: 'ProjectHook',
hook_name: 'push_hooks',
recursion_detection: Gitlab::WebHooks::RecursionDetection.to_log(project_hook),
'correlation_id' => kind_of(String)
)
)
service_instance.execute
expect(WebMock).not_to have_requested(:post, stubbed_hostname(project_hook.url))
end
it 'blocks and logs if the recursion count limit would be exceeded', :aggregate_failures do
stub_full_request(project_hook.url, method: :post)
stub_const("#{Gitlab::WebHooks::RecursionDetection.name}::COUNT_LIMIT", 3)
previous_hooks = create_list(:project_hook, 3)
previous_hooks.each { Gitlab::WebHooks::RecursionDetection.register!(_1) }
expect(Gitlab::AuthLogger).to receive(:error).with(
include(
message: 'Recursive webhook blocked from executing',
hook_id: project_hook.id,
hook_type: 'ProjectHook',
hook_name: 'push_hooks',
recursion_detection: Gitlab::WebHooks::RecursionDetection.to_log(project_hook),
'correlation_id' => kind_of(String)
)
)
service_instance.execute
expect(WebMock).not_to have_requested(:post, stubbed_hostname(project_hook.url))
end
it 'handles exceptions' do
exceptions = Gitlab::HTTP::HTTP_ERRORS + [
Gitlab::Json::LimitedEncoder::LimitExceeded, URI::InvalidURIError
]
allow(Gitlab::WebHooks::RecursionDetection).to receive(:block?).and_return(false)
exceptions.each do |exception_class|
exception = exception_class.new('Exception message')
project_hook.enable!
stub_full_request(project_hook.url, method: :post).to_raise(exception)
expect(service_instance.execute).to eq({ status: :error, message: exception.to_s })
expect { service_instance.execute }.not_to raise_error
end
end
context 'when url is not encoded' do
let_it_be(:project_hook) { create(:project_hook, url: 'http://server.com/my path/') }
it 'handles exceptions' do
expect(service_instance.execute).to eq(status: :error, message: 'bad URI(is not URI?): "http://server.com/my path/"')
expect { service_instance.execute }.not_to raise_error
end
end
context 'when request body size is too big' do
it 'does not perform the request' do
stub_const("#{described_class}::REQUEST_BODY_SIZE_LIMIT", 10.bytes)
expect(service_instance.execute).to eq({ status: :error, message: "Gitlab::Json::LimitedEncoder::LimitExceeded" })
end
end
it 'handles 200 status code' do
stub_full_request(project_hook.url, method: :post).to_return(status: 200, body: 'Success')
expect(service_instance.execute).to include({ status: :success, http_status: 200, message: 'Success' })
end
it 'handles 2xx status codes' do
stub_full_request(project_hook.url, method: :post).to_return(status: 201, body: 'Success')
expect(service_instance.execute).to include({ status: :success, http_status: 201, message: 'Success' })
end
context 'execution logging' do
let(:hook_log) { project_hook.web_hook_logs.last }
def run_service
service_instance.execute
::WebHooks::LogExecutionWorker.drain
project_hook.reload
end
context 'with success' do
before do
stub_full_request(project_hook.url, method: :post).to_return(status: 200, body: 'Success')
end
context 'when forced' do
let(:service_instance) { described_class.new(project_hook, data, :push_hooks, force: true) }
it 'logs execution inline' do
expect(::WebHooks::LogExecutionWorker).not_to receive(:perform_async)
expect(::WebHooks::LogExecutionService)
.to receive(:new)
.with(hook: project_hook, log_data: Hash, response_category: :ok)
.and_return(double(execute: nil))
run_service
end
end
it 'log successful execution' do
run_service
expect(hook_log.trigger).to eq('push_hooks')
expect(hook_log.url).to eq(project_hook.url)
expect(hook_log.request_headers).to eq(headers)
expect(hook_log.response_body).to eq('Success')
expect(hook_log.response_status).to eq('200')
expect(hook_log.execution_duration).to be > 0
expect(hook_log.internal_error_message).to be_nil
end
it 'does not log in the service itself' do
expect { service_instance.execute }.not_to change(::WebHookLog, :count)
end
it 'does not increment the failure count' do
expect { run_service }.not_to change(project_hook, :recent_failures)
end
it 'does not change the disabled_until attribute' do
expect { run_service }.not_to change(project_hook, :disabled_until)
end
context 'when the hook had previously failed' do
before do
project_hook.update!(recent_failures: 2)
end
it 'resets the failure count' do
expect { run_service }.to change(project_hook, :recent_failures).to(0)
end
end
end
context 'with bad request' do
before do
stub_full_request(project_hook.url, method: :post).to_return(status: 400, body: 'Bad request')
end
it 'logs failed execution' do
run_service
expect(hook_log).to have_attributes(
trigger: eq('push_hooks'),
url: eq(project_hook.url),
request_headers: eq(headers),
response_body: eq('Bad request'),
response_status: eq('400'),
execution_duration: be > 0,
internal_error_message: be_nil
)
end
it 'increments the failure count' do
expect { run_service }.to change(project_hook, :recent_failures).by(1)
end
it 'does not change the disabled_until attribute' do
expect { run_service }.not_to change(project_hook, :disabled_until)
end
it 'does not allow the failure count to overflow' do
project_hook.update!(recent_failures: 32767)
expect { run_service }.not_to change(project_hook, :recent_failures)
end
context 'when the web_hooks_disable_failed FF is disabled' do
before do
# Hook will only be executed if the flag is disabled.
stub_feature_flags(web_hooks_disable_failed: false)
end
it 'does not allow the failure count to overflow' do
project_hook.update!(recent_failures: 32767)
expect { run_service }.not_to change(project_hook, :recent_failures)
end
end
end
context 'with exception' do
before do
stub_full_request(project_hook.url, method: :post).to_raise(SocketError.new('Some HTTP Post error'))
end
it 'log failed execution' do
run_service
expect(hook_log.trigger).to eq('push_hooks')
expect(hook_log.url).to eq(project_hook.url)
expect(hook_log.request_headers).to eq(headers)
expect(hook_log.response_body).to eq('')
expect(hook_log.response_status).to eq('internal error')
expect(hook_log.execution_duration).to be > 0
expect(hook_log.internal_error_message).to eq('Some HTTP Post error')
end
it 'does not increment the failure count' do
expect { run_service }.not_to change(project_hook, :recent_failures)
end
it 'backs off' do
expect { run_service }.to change(project_hook, :disabled_until)
end
it 'increases the backoff count' do
expect { run_service }.to change(project_hook, :backoff_count).by(1)
end
context 'when the previous cool-off was near the maximum' do
before do
project_hook.update!(disabled_until: 5.minutes.ago, backoff_count: 8)
end
it 'sets the disabled_until attribute' do
expect { run_service }.to change(project_hook, :disabled_until).to(1.day.from_now)
end
end
context 'when we have backed-off many many times' do
before do
project_hook.update!(disabled_until: 5.minutes.ago, backoff_count: 365)
end
it 'sets the disabled_until attribute' do
expect { run_service }.to change(project_hook, :disabled_until).to(1.day.from_now)
end
end
end
context 'with unsafe response body' do
before do
stub_full_request(project_hook.url, method: :post).to_return(status: 200, body: "\xBB")
run_service
end
it 'log successful execution' do
expect(hook_log.trigger).to eq('push_hooks')
expect(hook_log.url).to eq(project_hook.url)
expect(hook_log.request_headers).to eq(headers)
expect(hook_log.response_body).to eq('')
expect(hook_log.response_status).to eq('200')
expect(hook_log.execution_duration).to be > 0
expect(hook_log.internal_error_message).to be_nil
end
end
end
end
describe '#async_execute' do
def expect_to_perform_worker(hook)
expect(WebHookWorker).to receive(:perform_async).with(hook.id, data, 'push_hooks', an_instance_of(Hash))
end
def expect_to_rate_limit(hook, threshold:, throttled: false)
expect(Gitlab::ApplicationRateLimiter).to receive(:throttled?)
.with(:web_hook_calls, scope: [hook], threshold: threshold)
.and_return(throttled)
end
context 'when rate limiting is not configured' do
it 'queues a worker without tracking the call' do
expect(Gitlab::ApplicationRateLimiter).not_to receive(:throttled?)
expect_to_perform_worker(project_hook)
service_instance.async_execute
end
end
context 'when rate limiting is configured' do
let_it_be(:threshold) { 3 }
let_it_be(:plan_limits) { create(:plan_limits, :default_plan, web_hook_calls: threshold) }
it 'queues a worker and tracks the call' do
expect_to_rate_limit(project_hook, threshold: threshold)
expect_to_perform_worker(project_hook)
service_instance.async_execute
end
context 'when the hook is throttled (via mock)' do
before do
expect_to_rate_limit(project_hook, threshold: threshold, throttled: true)
end
it 'does not queue a worker and logs an error' do
expect(WebHookWorker).not_to receive(:perform_async)
expect(Gitlab::AuthLogger).to receive(:error).with(
include(
message: 'Webhook rate limit exceeded',
hook_id: project_hook.id,
hook_type: 'ProjectHook',
hook_name: 'push_hooks',
"correlation_id" => kind_of(String),
"meta.project" => project.full_path,
"meta.related_class" => 'ProjectHook',
"meta.root_namespace" => project.root_namespace.full_path
)
)
service_instance.async_execute
end
end
context 'when the hook is throttled (via Redis)', :clean_gitlab_redis_rate_limiting do
before do
# Set a high interval to avoid intermittent failures in CI
allow(Gitlab::ApplicationRateLimiter).to receive(:rate_limits).and_return(
web_hook_calls: { interval: 1.day }
)
expect_to_perform_worker(project_hook).exactly(threshold).times
threshold.times { service_instance.async_execute }
end
it 'stops queueing workers and logs errors' do
expect(Gitlab::AuthLogger).to receive(:error).twice
2.times { service_instance.async_execute }
end
it 'still queues workers for other hooks' do
other_hook = create(:project_hook)
expect_to_perform_worker(other_hook)
described_class.new(other_hook, data, :push_hooks).async_execute
end
end
end
context 'recursion detection' do
before do
# Set a request UUID so `RecursionDetection.block?` will query redis.
Gitlab::WebHooks::RecursionDetection.set_request_uuid(SecureRandom.uuid)
end
it 'does not queue a worker and logs an error if the call chain limit would be exceeded' do
stub_const("#{Gitlab::WebHooks::RecursionDetection.name}::COUNT_LIMIT", 3)
previous_hooks = create_list(:project_hook, 3)
previous_hooks.each { Gitlab::WebHooks::RecursionDetection.register!(_1) }
expect(WebHookWorker).not_to receive(:perform_async)
expect(Gitlab::AuthLogger).to receive(:error).with(
include(
message: 'Recursive webhook blocked from executing',
hook_id: project_hook.id,
hook_type: 'ProjectHook',
hook_name: 'push_hooks',
recursion_detection: Gitlab::WebHooks::RecursionDetection.to_log(project_hook),
'correlation_id' => kind_of(String),
'meta.project' => project.full_path,
'meta.related_class' => 'ProjectHook',
'meta.root_namespace' => project.root_namespace.full_path
)
)
service_instance.async_execute
end
it 'does not queue a worker and logs an error if a recursive call chain is detected' do
Gitlab::WebHooks::RecursionDetection.register!(project_hook)
expect(WebHookWorker).not_to receive(:perform_async)
expect(Gitlab::AuthLogger).to receive(:error).with(
include(
message: 'Recursive webhook blocked from executing',
hook_id: project_hook.id,
hook_type: 'ProjectHook',
hook_name: 'push_hooks',
recursion_detection: Gitlab::WebHooks::RecursionDetection.to_log(project_hook),
'correlation_id' => kind_of(String),
'meta.project' => project.full_path,
'meta.related_class' => 'ProjectHook',
'meta.root_namespace' => project.root_namespace.full_path
)
)
service_instance.async_execute
end
end
context 'when hook has custom context attributes' do
it 'includes the attributes in the worker context' do
expect(WebHookWorker).to receive(:perform_async) do
expect(Gitlab::ApplicationContext.current).to include(
'meta.project' => project_hook.project.full_path,
'meta.root_namespace' => project.root_ancestor.path,
'meta.related_class' => 'ProjectHook'
)
end
service_instance.async_execute
end
end
end
end