Commit a96765e6 authored by Sean McGivern's avatar Sean McGivern

Add metric initializer spec

An empty file in one of the instrumented directories will cause the app
to fail to start when metrics are enabled. Metrics aren't enabled by
default in development or test.

We could handle the empty file case explicitly, but a file could still
not define the constant it is expected to, so instead run the
initializer manually in a spec and check that it succeeds.
parent 65bf7e0d
# Autoload all classes that we want to instrument, and instrument the methods we
# need. This takes the Gitlab::Metrics::Instrumentation module as an argument so
# that we can stub it for testing, as it is only called when metrics are
# enabled.
#
# rubocop:disable Metrics/AbcSize
def instrument_classes(instrumentation)
instrumentation.instrument_instance_methods(Gitlab::Shell)
instrumentation.instrument_methods(Gitlab::Git)
Gitlab::Git.constants.each do |name|
const = Gitlab::Git.const_get(name)
next unless const.is_a?(Module)
instrumentation.instrument_methods(const)
instrumentation.instrument_instance_methods(const)
end
# Path to search => prefix to strip from constant
paths_to_instrument = {
['app', 'finders'] => ['app', 'finders'],
['app', 'mailers', 'emails'] => ['app', 'mailers'],
['app', 'services', '**'] => ['app', 'services'],
['lib', 'gitlab', 'conflicts'] => ['lib'],
['lib', 'gitlab', 'diff'] => ['lib'],
['lib', 'gitlab', 'email', 'message'] => ['lib'],
['lib', 'gitlab', 'checks'] => ['lib']
}
paths_to_instrument.each do |(path, prefix)|
prefix = Rails.root.join(*prefix)
Dir[Rails.root.join(*path + ['*.rb'])].each do |file_path|
path = Pathname.new(file_path).relative_path_from(prefix)
const = path.to_s.sub('.rb', '').camelize.constantize
instrumentation.instrument_methods(const)
instrumentation.instrument_instance_methods(const)
end
end
instrumentation.instrument_methods(Premailer::Adapter::Nokogiri)
instrumentation.instrument_instance_methods(Premailer::Adapter::Nokogiri)
[
:Blame, :Branch, :BranchCollection, :Blob, :Commit, :Diff, :Repository,
:Tag, :TagCollection, :Tree
].each do |name|
const = Rugged.const_get(name)
instrumentation.instrument_methods(const)
instrumentation.instrument_instance_methods(const)
end
# Instruments all Banzai filters and reference parsers
{
Filter: Rails.root.join('lib', 'banzai', 'filter', '*.rb'),
ReferenceParser: Rails.root.join('lib', 'banzai', 'reference_parser', '*.rb')
}.each do |const_name, path|
Dir[path].each do |file|
klass = File.basename(file, File.extname(file)).camelize
const = Banzai.const_get(const_name).const_get(klass)
instrumentation.instrument_methods(const)
instrumentation.instrument_instance_methods(const)
end
end
instrumentation.instrument_methods(Banzai::Renderer)
instrumentation.instrument_methods(Banzai::Querying)
instrumentation.instrument_instance_methods(Banzai::ObjectRenderer)
instrumentation.instrument_instance_methods(Banzai::Redactor)
instrumentation.instrument_methods(Banzai::NoteRenderer)
[Issuable, Mentionable, Participable].each do |klass|
instrumentation.instrument_instance_methods(klass)
instrumentation.instrument_instance_methods(klass::ClassMethods)
end
instrumentation.instrument_methods(Gitlab::ReferenceExtractor)
instrumentation.instrument_instance_methods(Gitlab::ReferenceExtractor)
# Instrument the classes used for checking if somebody has push access.
instrumentation.instrument_instance_methods(Gitlab::GitAccess)
instrumentation.instrument_instance_methods(Gitlab::GitAccessWiki)
instrumentation.instrument_instance_methods(API::Helpers)
instrumentation.instrument_instance_methods(RepositoryCheck::SingleRepositoryWorker)
instrumentation.instrument_instance_methods(Rouge::Plugins::Redcarpet)
instrumentation.instrument_instance_methods(Rouge::Formatters::HTMLGitlab)
[:XML, :HTML].each do |namespace|
namespace_mod = Nokogiri.const_get(namespace)
instrumentation.instrument_methods(namespace_mod)
instrumentation.instrument_methods(namespace_mod::Document)
end
instrumentation.instrument_methods(Rinku)
instrumentation.instrument_instance_methods(Repository)
instrumentation.instrument_methods(Gitlab::Highlight)
instrumentation.instrument_instance_methods(Gitlab::Highlight)
# This is a Rails scope so we have to instrument it manually.
instrumentation.instrument_method(Project, :visible_to_user)
end
# rubocop:enable Metrics/AbcSize
if Gitlab::Metrics.enabled?
require 'pathname'
require 'influxdb'
......@@ -49,110 +163,7 @@ if Gitlab::Metrics.enabled?
end
Gitlab::Metrics::Instrumentation.configure do |config|
config.instrument_instance_methods(Gitlab::Shell)
config.instrument_methods(Gitlab::Git)
Gitlab::Git.constants.each do |name|
const = Gitlab::Git.const_get(name)
next unless const.is_a?(Module)
config.instrument_methods(const)
config.instrument_instance_methods(const)
end
# Path to search => prefix to strip from constant
paths_to_instrument = {
['app', 'finders'] => ['app', 'finders'],
['app', 'mailers', 'emails'] => ['app', 'mailers'],
['app', 'services', '**'] => ['app', 'services'],
['lib', 'gitlab', 'conflicts'] => ['lib'],
['lib', 'gitlab', 'diff'] => ['lib'],
['lib', 'gitlab', 'email', 'message'] => ['lib'],
['lib', 'gitlab', 'checks'] => ['lib']
}
paths_to_instrument.each do |(path, prefix)|
prefix = Rails.root.join(*prefix)
Dir[Rails.root.join(*path + ['*.rb'])].each do |file_path|
path = Pathname.new(file_path).relative_path_from(prefix)
const = path.to_s.sub('.rb', '').camelize.constantize
config.instrument_methods(const)
config.instrument_instance_methods(const)
end
end
config.instrument_methods(Premailer::Adapter::Nokogiri)
config.instrument_instance_methods(Premailer::Adapter::Nokogiri)
[
:Blame, :Branch, :BranchCollection, :Blob, :Commit, :Diff, :Repository,
:Tag, :TagCollection, :Tree
].each do |name|
const = Rugged.const_get(name)
config.instrument_methods(const)
config.instrument_instance_methods(const)
end
# Instruments all Banzai filters and reference parsers
{
Filter: Rails.root.join('lib', 'banzai', 'filter', '*.rb'),
ReferenceParser: Rails.root.join('lib', 'banzai', 'reference_parser', '*.rb')
}.each do |const_name, path|
Dir[path].each do |file|
klass = File.basename(file, File.extname(file)).camelize
const = Banzai.const_get(const_name).const_get(klass)
config.instrument_methods(const)
config.instrument_instance_methods(const)
end
end
config.instrument_methods(Banzai::Renderer)
config.instrument_methods(Banzai::Querying)
config.instrument_instance_methods(Banzai::ObjectRenderer)
config.instrument_instance_methods(Banzai::Redactor)
config.instrument_methods(Banzai::NoteRenderer)
[Issuable, Mentionable, Participable].each do |klass|
config.instrument_instance_methods(klass)
config.instrument_instance_methods(klass::ClassMethods)
end
config.instrument_methods(Gitlab::ReferenceExtractor)
config.instrument_instance_methods(Gitlab::ReferenceExtractor)
# Instrument the classes used for checking if somebody has push access.
config.instrument_instance_methods(Gitlab::GitAccess)
config.instrument_instance_methods(Gitlab::GitAccessWiki)
config.instrument_instance_methods(API::Helpers)
config.instrument_instance_methods(RepositoryCheck::SingleRepositoryWorker)
config.instrument_instance_methods(Rouge::Plugins::Redcarpet)
config.instrument_instance_methods(Rouge::Formatters::HTMLGitlab)
[:XML, :HTML].each do |namespace|
namespace_mod = Nokogiri.const_get(namespace)
config.instrument_methods(namespace_mod)
config.instrument_methods(namespace_mod::Document)
end
config.instrument_methods(Rinku)
config.instrument_instance_methods(Repository)
config.instrument_methods(Gitlab::Highlight)
config.instrument_instance_methods(Gitlab::Highlight)
# This is a Rails scope so we have to instrument it manually.
config.instrument_method(Project, :visible_to_user)
instrument_classes(config)
end
GC::Profiler.enable
......
require 'spec_helper'
require_relative '../../config/initializers/metrics'
describe 'instrument_classes', lib: true do
let(:config) { double(:config) }
before do
allow(config).to receive(:instrument_method)
allow(config).to receive(:instrument_methods)
allow(config).to receive(:instrument_instance_methods)
end
it 'can autoload and instrument all files' do
expect { instrument_classes(config) }.not_to raise_error
end
end
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