Force numeric content type value (#3)

* Force content length to be an integer

* Force also response content length to be an integer

* Bump version number

* Support older versions of ruby

* Extract code to a private function

Author: simonrozsival

lib/logtail-rack/http_events.rb

@@ -142,7 +142,7 @@ def call(env)
 
             Config.instance.logger.info do
               http_context = CurrentContext.fetch(:http)
-              content_length = headers[CONTENT_LENGTH_KEY]
+              content_length = safe_to_i(headers[CONTENT_LENGTH_KEY])
               duration_ms = (Time.now - start) * 1000.0
 
               http_response = HTTPResponse.new(
@@ -180,7 +180,7 @@ def call(env)
               event_body = capture_request_body? ? request.body_content : nil
               http_request = HTTPRequest.new(
                 body: event_body,
-                content_length: request.content_length,
+                content_length: safe_to_i(request.content_length),
                 headers: request.headers,
                 host: force_encoding(request.host),
                 method: request.request_method,
@@ -217,7 +217,7 @@ def call(env)
 
             Config.instance.logger.info do
               event_body = capture_response_body? ? body : nil
-              content_length = headers[CONTENT_LENGTH_KEY]
+              content_length = safe_to_i(headers[CONTENT_LENGTH_KEY])
               duration_ms = (Time.now - start) * 1000.0
 
               http_response = HTTPResponse.new(
@@ -272,6 +272,10 @@ def silenced?(env, request)
             end
           end
 
+          def safe_to_i(val)
+            val.nil? ? nil : val.to_i
+          end
+
           def force_encoding(value)
             if value.respond_to?(:force_encoding)
               value.dup.force_encoding('UTF-8')

lib/logtail-rack/version.rb

@@ -1,7 +1,7 @@
 module Logtail
   module Integrations
     module Rack
-      VERSION = "0.1.3"
+      VERSION = "0.1.4"
     end
   end
 end