session: missing session table makes inveniogc fail

[nharraud]

This was first reported in EUDAT-B2SHARE/b2share#663

SCENARIO:

• install invenio and invenio-demosite from branch maint-2.0
• $ inveniomanage runserver
• $ inveniogc (in another shell)

Bibsched log:

...
2015-06-02 16:51:37 --> idxWORD01F normal wordtable flush ended
2015-06-02 16:51:37 --> Task #3 finished. [DONE]
2015-06-03 09:35:00 --> Task #3 started.
2015-06-03 09:35:00 --> Deleting expired sessions since 2015-06-03 07:35:00
2015-06-03 09:35:00 --> Task #3 finished. [RUNNING]
2015-06-03 09:35:00 -->
Traceback (most recent call last):
  File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/bibsched/bibtask.py", line 615, in task_init
    ret = _task_run(task_run_fnc)
  File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/bibsched/bibtask.py", line 1191, in _task_run
    if callable(task_run_fnc) and task_run_fnc():
  File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/websession/inveniogc.py", line 676, in task_run_core
    clean_sessions()
  File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/websession/inveniogc.py", line 340, in clean_sessions
    deleted_sessions += run_sql(query, (timelimit,))
  File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/dbquery_mysql.py", line 268, in run_sql
    rc = cur.execute(sql, param)
  File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/lib/python2.7/site-packages/MySQLdb/cursors.py", line 205, in execute
    self.errorhandler(self, exc, value)
  File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/lib/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
ProgrammingError: (1146, "Table 'inv_maint_2_0.session' doesn't exist")
2015-06-03 09:35:00 --> Unexpected error occurred: (1146, "Table 'inv_maint_2_0.session' doesn't exist").
2015-06-03 09:35:00 --> Traceback is:
2015-06-03 09:35:00 -->   File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/bibsched/bibtask.py", line 615, in task_init
2015-06-03 09:35:00 -->     ret = _task_run(task_run_fnc)
2015-06-03 09:35:00 -->   File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/bibsched/bibtask.py", line 1191, in _task_run
2015-06-03 09:35:00 -->     if callable(task_run_fnc) and task_run_fnc():
2015-06-03 09:35:00 -->   File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/websession/inveniogc.py", line 676, in task_run_core
2015-06-03 09:35:00 -->     clean_sessions()
2015-06-03 09:35:00 -->   File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/websession/inveniogc.py", line 340, in clean_sessions
2015-06-03 09:35:00 -->     deleted_sessions += run_sql(query, (timelimit,))
2015-06-03 09:35:00 -->   File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/src/invenio/invenio/legacy/dbquery_mysql.py", line 268, in run_sql
2015-06-03 09:35:00 -->     rc = cur.execute(sql, param)
2015-06-03 09:35:00 -->   File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/lib/python2.7/site-packages/MySQLdb/cursors.py", line 205, in execute
2015-06-03 09:35:00 -->     self.errorhandler(self, exc, value)
2015-06-03 09:35:00 -->   File "/Users/nharraud/.virtualenvs/invenio-maint-2.0/lib/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
2015-06-03 09:35:00 -->     raise errorclass, errorvalue
2015-06-03 09:35:00 --> Exiting.

As we now use redis to store sessions, the session table is not created.