Handle possible HTTP exception for Sentry client

Prior this commit exceptions raised during a HTTP request
weren't caught by the Sentry client and were passed to the user.

In addition the Sentry client tried to catch a non-existent error
`Sentry::Client::SentryError`.

Now, the Sentry client catches all possible errors coming from
a HTTP request.

1 files changed, 27 insertions, 3 deletions

diff --git a/lib/sentry/client.rb b/lib/sentry/client.rb
index bb1aa2a7a10..4022e8ff946 100644
--- a/lib/sentry/client.rb
+++ b/lib/sentry/client.rb
@@ -47,9 +47,11 @@ module Sentry
     end
 
     def http_get(url, params = {})
-      resp = Gitlab::HTTP.get(url, **request_params.merge(params))
+      response = handle_request_exceptions do
+        Gitlab::HTTP.get(url, **request_params.merge(params))
+      end
 
-      handle_response(resp)
+      handle_response(response)
     end
 
     def get_issues(issue_status:, limit:)
@@ -63,14 +65,36 @@ module Sentry
       http_get(projects_api_url)
     end
 
+    def handle_request_exceptions
+      yield
+    rescue HTTParty::Error => e
+      Gitlab::Sentry.track_acceptable_exception(e)
+      raise_error 'Error when connecting to Sentry'
+    rescue Net::OpenTimeout
+      raise_error 'Connection to Sentry timed out'
+    rescue SocketError
+      raise_error 'Received SocketError when trying to connect to Sentry'
+    rescue OpenSSL::SSL::SSLError
+      raise_error 'Sentry returned invalid SSL data'
+    rescue Errno::ECONNREFUSED
+      raise_error 'Connection refused'
+    rescue => e
+      Gitlab::Sentry.track_acceptable_exception(e)
+      raise_error "Sentry request failed due to #{e.class}"
+    end
+
     def handle_response(response)
       unless response.code == 200
-        raise Client::Error, "Sentry response status code: #{response.code}"
+        raise_error "Sentry response status code: #{response.code}"
       end
 
       response
     end
 
+    def raise_error(message)
+      raise Client::Error, message
+    end
+
     def projects_api_url
       projects_url = URI(@url)
       projects_url.path = '/api/0/projects/'