cannot add watcher to multiple instances

[fsouza]

Every watcher creation is a new user, so it's not possible to add a watcher to multiple instances. For instance:

% tsuru hc add-watcher instance1 fss@tsuru.io
ok
% tsuru hc add-watcher instance2 fss@tsuru.io
BOOM

Here is the log from the API:

2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]: Error handling request
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]: Traceback (most recent call last):
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/gunicorn/workers/sync.py", line 131, in handle_request
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     respiter = self.wsgi(environ, resp.start_response)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1836, in __call__
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     return self.wsgi_app(environ, start_response)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1820, in wsgi_app
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     response = self.make_response(self.handle_exception(e))
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1403, in handle_exception
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     reraise(exc_type, exc_value, tb)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1817, in wsgi_app
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     response = self.full_dispatch_request()
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1477, in full_dispatch_request
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     rv = self.handle_user_exception(e)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1381, in handle_user_exception
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     reraise(exc_type, exc_value, tb)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1475, in full_dispatch_request
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     rv = self.dispatch_request()
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1461, in dispatch_request
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     return self.view_functions[rule.endpoint](**req.view_args)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/home/application/current/healthcheck/auth.py", line 25, in decorated
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     return fn(*args, **kwargs)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/home/application/current/healthcheck/api.py", line 74, in add_watcher
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     get_manager().add_watcher(name, watcher)
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/home/application/current/healthcheck/backends/__init__.py", line 77, in add_watcher
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     "period": "1-7,00:00-24:00",
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/pyzabbix/__init__.py", line 140, in fn
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     args or kwargs
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:   File "/usr/local/lib/python2.7/dist-packages/pyzabbix/__init__.py", line 117, in do_request
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]:     raise ZabbixAPIException(msg, response_json['error']['code'])
2014-09-03 17:29:13 -0300 [api][49185a6aa9aa]: ZabbixAPIException: ('Error -32602: Invalid params., User with alias "fss@tsuru.io" already exists. while sending {\'params\': {\'passwd\': \'\', \'alias\': u\'fss@tsuru.io\', \'user_medias\': [{\'mediatypeid\': \'1\', \'active\': 0, \'period\': \'1-7,00:00-24:00\', \'severity\': 63, \'sendto\': u\'fss@tsuru.io\'}], \'usrgrps\': [u\'46\']}, \'jsonrpc\': \'2.0\', \'method\': \'user.create\', \'auth\': u\'redacted\', \'id\': 1}', -32602)