Detect release "after" SDK config is fully initialized

This allows the SDK to log release detection messages with the logger
user provides.

sentry-ruby/lib/sentry-ruby.rb

@@ -84,6 +84,7 @@ def registered_patches
  def init(&block)
  config = Configuration.new
  yield(config) if block_given?
+ config.detect_release
  apply_patches(config)
  client = Client.new(config)
  scope = Scope.new(max_breadcrumbs: config.max_breadcrumbs)

sentry-ruby/lib/sentry/configuration.rb

@@ -198,7 +198,6 @@ def initialize
  self.project_root = Dir.pwd
  self.propagate_traces = true
 
- self.release = detect_release
  self.sample_rate = 1.0
  self.send_modules = true
  self.send_default_pii = false
@@ -314,17 +313,17 @@ def stacktrace_builder
  )
  end
 
- private
-
  def detect_release
- detect_release_from_env ||
+ self.release ||= detect_release_from_env ||
  detect_release_from_git ||
  detect_release_from_capistrano ||
  detect_release_from_heroku
  rescue => e
  log_error("Error detecting release", e, debug: debug)
  end
 
+ private
+
  def excluded_exception?(incoming_exception)
  excluded_exception_classes.any? do |excluded_exception|
  matches_exception?(excluded_exception, incoming_exception)

sentry-ruby/spec/sentry_spec.rb

@@ -480,6 +480,14 @@
  expect(described_class.configuration.release).to eq(nil)
  end
 
+ it "respects user's config" do
+ described_class.init do |config|
+ config.release = "foo"
+ end
+
+ expect(described_class.configuration.release).to eq("foo")
+ end
+
  it 'uses `SENTRY_RELEASE` env variable' do
  ENV['SENTRY_RELEASE'] = 'v1'
 
@@ -577,9 +585,11 @@
  it "returns nil + logs an warning if HEROKU_SLUG_COMMIT is not set" do
  string_io = StringIO.new
  logger = Logger.new(string_io)
- allow_any_instance_of(Sentry::Configuration).to receive(:logger).and_return(logger)
 
- described_class.init
+ described_class.init do |config|
+ config.logger = logger
+ end
+
  expect(described_class.configuration.release).to eq(nil)
  expect(string_io.string).to include(Sentry::Configuration::HEROKU_DYNO_METADATA_MESSAGE)
  end
@@ -600,7 +610,6 @@
  it "logs the error" do
  string_io = StringIO.new
  logger = Logger.new(string_io)
- allow_any_instance_of(Sentry::Configuration).to receive(:logger).and_return(logger)
  allow_any_instance_of(Sentry::Configuration).to receive(:detect_release_from_git).and_raise(TypeError.new)
 
  described_class.init do |config|