push.rb in prometheus-client-4.2.2

- old
+ new

@@ -85,19 +85,23 @@
       rescue URI::InvalidURIError => e
         raise ArgumentError, "#{url} is not a valid URL: #{e}"
       end
 
       def build_path(job, grouping_key)
+        job = job.to_s
+
         # Job can't be empty, but it can contain `/`, so we need to base64
         # encode it in that case
         if job.include?('/')
           encoded_job = Base64.urlsafe_encode64(job)
           path = "#{PATH}/job@base64/#{encoded_job}"
         else
           path = "#{PATH}/job/#{ERB::Util::url_encode(job)}"
         end
 
         grouping_key.each do |label, value|
+          value = value.to_s
+
           if value.include?('/')
             encoded_value = Base64.urlsafe_encode64(value)
             path += "/#{label}@base64/#{encoded_value}"
           # While it's valid for the urlsafe_encode64 function to return an
           # empty string when the input string is empty, it doesn't work for