«
»

Interesting Problem with Google AdWords API

AdWords

I was working on stripping out a little bit of code from a project at The Shop today, and when I stripped out the library I had made, I got the following error when trying to start the REPL:

  $ lein repl
  Exception in thread "main" java.lang.NoClassDefFoundError:
  clojure/tools/logging/impl/LoggerFactory, compiling:
  (/private/var/folders/ct/jhkds06j26v1lq2t40jx4cndl_629q/T/
  form-init4416651774354867948.clj:1:124)
      at clojure.lang.Compiler.load(Compiler.java:7142)
      at clojure.lang.Compiler.loadFile(Compiler.java:7086)
      at clojure.main$load_script.invoke(main.clj:274)
      at clojure.main$init_opt.invoke(main.clj:279)
      at clojure.main$initialize.invoke(main.clj:307)
      at clojure.main$null_opt.invoke(main.clj:342)
      at clojure.main$main.doInvoke(main.clj:420)

And if I put the library in the project.clj, I don't get this error, but if I take it out, I get this error. And I needed to take it out.

When I did a lien reps :tree to see what overlaps there might be in the libraries, I found a few in the Google AdWords libraries. Easily enough, I took them out, and forced the right version with a simple:

  ;; AdWords Java API
  [commons-lang "2.6"]
  [com.google.api-ads/ads-lib "1.38.0" :exclusions [commons-lang
                                                    org.slf4j/slf4j-api]]
  [com.google.api-ads/adwords-axis "1.38.0" :exclusions [commons-lang
                                                         org.slf4j/slf4j-api]]

because the conflict was in the Google jars and both 2.5 and 2.6 of commons-lang were being used. Simply exclude them both, reference 2.6 first, and that should take care of it.

But it didn't.

So I took to the Google and found that someone had solved this by putting the class in the :apt section of the project.clj file. So with that, I tried:

  :aot [clojure.tools.logging.impl bartender.main]

and then things started working just fine again.

I'm guessing that by building the uberjar for the other library, it did this compilation, so that it wasn't necessary for this project. Take it out, and we have a problem. Force the compile first, and it's all good.

Glad I figured that out.

This entry was posted on Wednesday, April 15th, 2015 at 11:47 am and is filed under Clojure Coding, Open Source Software, Vendors. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.