App Engine just became a more interesting Clojure platform now that Google has opened Compute Engine to everyone and has provided a way to use sockets and threads.
Has anyone adapted Clojure to work with App Engine's new ThreadManager and Sockets APIs? The experimental sockets API enables you to connect to Compute Engine servers from App Engine: https://developers.google.com/appengine/docs/java/sockets/overview And until recently AppEngine didn't permit threads so Clojure's agents and futures would work, but now you can execute short-lived threads through the ThreadManager API: - https://developers.google.com/appengine/docs/java/javadoc/com/google/appengine/api/ThreadManager There are some restrictions though -- "each request is limited to 50 concurrent request threads", and "you cannot invoke new Thread() yourself or use the default thread factory." >From https://developers.google.com/appengine/docs/java/runtime#The_Sandbox ... Threads A Java application can create a new thread, but there are some restrictions on how to do it. These threads can't "outlive" the request that creates them. (On a backend server, an application can spawn a background thread<https://developers.google.com/appengine/docs/java/backends/overview#background_threads>, a thread that can "outlive" the request that creates it.) An application can - Implement java.lang.Runnable; and - Create a thread factory by calling com.google.appengine.api.ThreadManager.currentRequestThreadFactory()<https://developers.google.com/appengine/docs/java/javadoc/com/google/appengine/api/ThreadManager#currentRequestThreadFactory()> - call the factory's newRequestThread method, passing in the Runnable, newRequestThread(runnable) or use the factory object returned by com.google.appengine.api.ThreadManager.currentRequestThreadFactory()<https://developers.google.com/appengine/docs/java/javadoc/com/google/appengine/api/ThreadManager#currentRequestThreadFactory()> with an ExecutorService (e.g., callExecutors.newCachedThreadPool(factory)). However, you must use one of the methods on ThreadManager to create your threads. You cannot invoke new Thread() yourself or use the default thread factory<http://docs.oracle.com/javase/6/docs/api/java/util/concurrent/Executors.html#defaultThreadFactory> . An application can perform operations against the current thread, such as thread.interrupt(). Each request is limited to 50 concurrent request threads. ---//--- - James -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
