Homepage sample for pubsub does not work

[theacodes]

Original issue

[dhermes]

/cc @jpvic

[theacodes]

This has been fixed. Closing, feel free to comment if you still have issues @jpvic

[jpvic]

The typo is corrected.

from gcloud import pubsub

client = pubsub.Client(project='your-project-id')
topic = client.topic('your-topic-name')

topic.publish('Ping!')

subscription = topic.subscription('your-subscription-name')

messages = subscription.pull()

for ackid, message in messages:
    print message.data

subscription.acknowledge([ackid for ackid, _ in messages])

the examples ends with the same error:

  File "/usr/lib64/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib64/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib64/python2.7/json/decoder.py", line 384, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

[theacodes]

I'm not able to reproduce that, can you tell me your gcloud version and full python version?

[jpvic]

python -c 'import sys; print(sys.version)'

2.7.10 (default, Jul 5 2015, 14:15:43)
[GCC 5.1.1 20150618 (Red Hat 5.1.1-4)]

pip show gcloud

---

Metadata-Version: 1.1
Name: gcloud
Version: 0.7.1
Summary: API Client library for Google Cloud
Home-page: https://github.com/GoogleCloudPlatform/gcloud-python
Author: Google Cloud Platform
Author-email: jjg+gcloud-python@google.com
License: Apache 2.0

[theacodes]

Thanks, did you create a topic and subscription before running the sample?

[dhermes]

It seems we could do a better job catching the error instead of trying to json decode something that is invalid. @jpvic Could you provide the whole stack trace?

If you could, use triple backticks to format the stacktrace (easier on the eyes). Or @jonparrott could edit your post to add the formatting.

[theacodes]

edited.

[jpvic]

indeed. I used the topic and subscription of my project. I do use the messaging platform with no problems in the project.
In my project I use httplib2.http() .... and that works.
But the easy code proposed with the same topic and subscription doesn't work.

[theacodes]

Can you try with a new topic/subscription? The subscription should be pull subscription. You can create them with these gcloud commands:

$ gcloud alpha pubsub topics create [your-topic-name]
$ gcloud alpha pubsub subcriptions create [your-subscription-name] --topic [your-topic-name] 

[jpvic]

I didn't created the original topic with gcloud command

I retried with with the proposed command : ( watch out typo 'subcriptions' ==> subscriptions )

from gcloud import pubsub
import errno

client = pubsub.Client(project='demoproject')
topic = client.topic('projects/demoproject/topics/demotopic')

try:
    topic.publish('Ping!')
except errno as e:
    print(e)

subscription = topic.subscription('projects/demoproject/subscriptions/demosubscription')

messages = subscription.pull()

for ackid, message in messages:
    print message.data

subscription.acknowledge([ackid for ackid, _ in messages])

same result 👍

/usr/bin/python2.7 /root/PycharmProjects/github/pythonCloudExample.py
Traceback (most recent call last):
  File "/root/PycharmProjects/github/pythonCloudExample.py", line 8, in <module>
    topic.publish('Ping!')
  File "/usr/lib/python2.7/site-packages/gcloud-0.7.1-py2.7.egg/gcloud/pubsub/topic.py", line 186, in publish
    method='POST', path='%s:publish' % (self.path,), data=data)
  File "/usr/lib/python2.7/site-packages/gcloud-0.7.1-py2.7.egg/gcloud/connection.py", line 419, in api_request
    error_info=method + ' ' + url)
  File "/usr/lib/python2.7/site-packages/gcloud-0.7.1-py2.7.egg/gcloud/exceptions.py", line 185, in make_exception
    payload = json.loads(content)
  File "/usr/lib64/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib64/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib64/python2.7/json/decoder.py", line 384, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

Process finished with exit code 1

[theacodes]

@dhermes any ideas?

[dhermes]

@jonparrott Can you format the above stacktrace with triple quotes (I don't have edit privileges)?

Yes, I think the error payload is HTML only, we have a flag use_json=True which is only used for the discovery-based APIs.

It's possible here that his payload is a more generic error, I'd need a debugger to actually find out, but I can try to reproduce myself as well (pending the code formatting 😄)

[theacodes]

Done, and I couldn't reproduce it on my end.

[theacodes]

These samples have been removed, so I'm closing this issue.