hi Dimitris! How do you manage to resolve this issue? my problem is exactly the same as you have. I would really appreciate your reply. thanks
On Friday, March 18, 2016 at 12:00:40 AM UTC+8, dimitris agelakis wrote: > > I have come to a dead end with this thing, can somebody give me a hint on > how to overcome my problem with the external grader? > Here is what I have done so far: > > I have imported the sample course and also cloned the java grader from > here: > https://github.com/huynq55/java-grader > > I have edited the /edx/app/xqueue/xqueue.env.json to look like this: > > { > "LOCAL_LOGLEVEL": "INFO", > "LOGGING_ENV": "sandbox", > "LOG_DIR": "/edx/var/log/xqueue", > "RABBIT_HOST": "localhost", > "S3_BUCKET": "sandbox-bucket", > "S3_PATH_PREFIX": "sandbox-xqueue", > "SYSLOG_SERVER": "localhost", > "XQUEUES": { > "certificates": null, > "java-queue": "http://localhost:1710";, > "open-ended": null, > "open-ended-message": null, > "test-pull": null > }, > "XQUEUE_WORKERS_PER_QUEUE": 12 > } > > I have restarted the xqueue with the following command: > sudo /edx/bin/supervisorctl restart xqueue: > > Seems that all the services are running normally: > > $ sudo /edx/bin/supervisorctl -c /edx/etc/supervisord.conf status > certs RUNNING pid 5412, uptime 0:10:20 > edxapp:cms RUNNING pid 1506, uptime 1 day, 19:59: > 30 > edxapp:lms RUNNING pid 1504, uptime 1 day, 19:59: > 30 > edxapp_worker:cms_default_4 RUNNING pid 1526, uptime 1 day, 19:59: > 29 > edxapp_worker:cms_high_1 RUNNING pid 1521, uptime 1 day, 19:59: > 29 > edxapp_worker:cms_low_3 RUNNING pid 1512, uptime 1 day, 19:59: > 30 > edxapp_worker:lms_default_3 RUNNING pid 1517, uptime 1 day, 19:59: > 29 > edxapp_worker:lms_high_4 RUNNING pid 1531, uptime 1 day, 19:59: > 29 > edxapp_worker:lms_high_mem_2 RUNNING pid 1513, uptime 1 day, 19:59: > 30 > edxapp_worker:lms_low_1 RUNNING pid 1523, uptime 1 day, 19:59: > 29 > forum RUNNING pid 1500, uptime 1 day, 19:59: > 30 > xqueue RUNNING pid 5409, uptime 0:10:20 > xqueue_consumer RUNNING pid 1499, uptime 1 day, 19:59: > 30 > > I run the JavaGrader.py: > sudo python /edx/java-grader/JavaGrader.py > > And then I go to the course and try to test the grader... > > When I run the one of the 3 problems from the sample course, i see that > the grader seems to work correctly, it puts the data to the "xqueue" > database in MySQL for example the following query: > select grader_reply from queue_submission; > > returns something like this: > > > +------------------------------------------------------------------------------------------+ > | grader_reply > | > > +------------------------------------------------------------------------------------------+ > | {"msg": "Good job!", "score": 1, "correct": true} > | > | {"msg": "Good job!", "score": 1, "correct": true} > | > | {"msg": "Good job!", "score": 1, "correct": true} > | > | {"msg": "Good job!", "score": 1, "correct": true} > | > | {"msg": "Good job!", "score": 1, "correct": true} > | > ..... > (the rows increase every time I check the program from the sample > course)... > > But although the grader passes, and it puts the data into database, it > NEVER returns the answer to the LMS. > > The logs from: > /edx/var/log/xqueue/edx.log > > are the following (after each check): > > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] INFO [Mathesis1 1896] [consumer.py:321] - Processing submission > from queue_name: java-queue, submission_id: 31 > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][requests.packages. > urllib3.connectionpool][env:sandbox] INFO [Mathesis1 1896] [ > connectionpool.py:191] - Starting new HTTP connection (1): localhost > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:185] - Could not connect to > server at http://localhost:1710 in timeout=30.000000 > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:403] - Submission 31 to > grader http://localhost:1710 failure: Reply: cannot connect to server, > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][requests.packages. > urllib3.connectionpool][env:sandbox] INFO [Mathesis1 1896] [ > connectionpool.py:191] - Starting new HTTP connection (1): localhost > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:185] - Could not connect to > server at > http://localhost:3180/courses/CUP/j101/2014_T12/xqueue/9/i4x://CUP/j101/problem/a2ed4ae1e2e94c278d92c494b2b738b6/score_update > > in timeout=5.000000 > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][requests.packages. > urllib3.connectionpool][env:sandbox] INFO [Mathesis1 1896] [ > connectionpool.py:191] - Starting new HTTP connection (1): localhost > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:185] - Could not connect to > server at > http://localhost:3180/courses/CUP/j101/2014_T12/xqueue/9/i4x://CUP/j101/problem/a2ed4ae1e2e94c278d92c494b2b738b6/score_update > > in timeout=5.000000 > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][requests.packages. > urllib3.connectionpool][env:sandbox] INFO [Mathesis1 1896] [ > connectionpool.py:191] - Starting new HTTP connection (1): localhost > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:185] - Could not connect to > server at > http://localhost:3180/courses/CUP/j101/2014_T12/xqueue/9/i4x://CUP/j101/problem/a2ed4ae1e2e94c278d92c494b2b738b6/score_update > > in timeout=5.000000 > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][requests.packages. > urllib3.connectionpool][env:sandbox] INFO [Mathesis1 1896] [ > connectionpool.py:191] - Starting new HTTP connection (1): localhost > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:185] - Could not connect to > server at > http://localhost:3180/courses/CUP/j101/2014_T12/xqueue/9/i4x://CUP/j101/problem/a2ed4ae1e2e94c278d92c494b2b738b6/score_update > > in timeout=5.000000 > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][requests.packages. > urllib3.connectionpool][env:sandbox] INFO [Mathesis1 1896] [ > connectionpool.py:191] - Starting new HTTP connection (1): localhost > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:185] - Could not connect to > server at > http://localhost:3180/courses/CUP/j101/2014_T12/xqueue/9/i4x://CUP/j101/problem/a2ed4ae1e2e94c278d92c494b2b738b6/score_update > > in timeout=5.000000 > Mar 17 16:33:09 Mathesis1 [service_variant=xqueue][queue.consumer][env: > sandbox] ERROR [Mathesis1 1896] [consumer.py:163] - Unable to return to > LMS: lms_callback_url: > http://localhost:3180/courses/CUP/j101/2014_T12/xqueue/9/i4x://CUP/j101/problem/a2ed4ae1e2e94c278d92c494b2b738b6/score_update, > > payload: {'xqueue_header': u'{"lms_key": > "eb1915fccfad4b664377bf8e47e27d9e", "lms_callback_url": " > http://localhost:3180/courses/CUP/j101/2014_T12/xqueue/9/i4x://CUP/j101/problem/a2ed4ae1e2e94c278d92c494b2b738b6/score_update";, > > "queue_name": "java-queue"}', 'xqueue_body': '{"msg": "<div > class=\\"capa_alert\\">Your submission could not be graded. Please recheck > your submission and try again. If the problem persists, please notify the > course staff.</div>", "score": 0, "correct": null}'}, lms_reply: cannot > connect to server > > > Anyone knows what this "lms_reply: cannot connect to server" means and > why it is happening? > And what is this "/score_update" at the end of the url shown in the logs? > How can I make the LMS accept the reply? > > Any help would be appreciated as I am totally lost on this one! > And a thorough tutorial by the creators of the external grader on how to > make it work would also be appreciated ! > > Thank you in advance guys, I hope someone has an answer :) > > > > > -- You received this message because you are subscribed to the Google Groups "General Open edX discussion" group. To view this discussion on the web visit https://groups.google.com/d/msgid/edx-code/838f35ca-58c8-4cbb-99bd-78dd1ad9824c%40googlegroups.com.
