Re: [openstack-dev] [Ceilometer] Need help with Alembic...

2013-08-26 Thread Herndon, John Luke (HPCS - Ft. Collins)
Jay - 

It looks there is an error in the migration script that causes it to abort:

AttributeError: 'ForeignKeyConstraint' object has no attribute 'drop'

My guess is the migration runs on the first test, creates event types
table fine, but exits with the above error, so migration is not
complete. Thus every subsequent test tries to migrate the db, and
notices that event types already exists.

-john

On 8/26/13 1:15 PM, Jay Pipes jaypi...@gmail.com wrote:

I just noticed that every single test case for SQL-driver storage is
executing every single migration upgrade before every single test case
run:

https://github.com/openstack/ceilometer/blob/master/ceilometer/tests/db.py
#L46

https://github.com/openstack/ceilometer/blob/master/ceilometer/storage/imp
l_sqlalchemy.py#L153

instead of simply creating a new database schema from the models in the
current source code base using a call to sqlalchemy.MetaData.create_all().

This results in re-running migrations over and over again, instead of
having dedicated migration tests that would test each migration
individually, as is the case in projects like Glance...

Is this intentional?

Best,
-jay

On 08/26/2013 02:59 PM, Sandy Walsh wrote:
 I'm getting the same problem with a different migration (mine is
 complaining that a column already exists)

 http://paste.openstack.org/show/44512/

 I've compared it to the other migrations and it seems fine.

 -S

 On 08/26/2013 02:34 PM, Jay Pipes wrote:
 Hey all,

 I'm trying to figure out what is going wrong with my code for this
patch:

 https://review.openstack.org/41316

 I had previously added a sqlalchemy-migrate migration script to add an
 event_type table, and had that working, but then was asked to instead
 use Alembic for migrations. So, I removed the sqlalchemy-migrate
 migration file and added an Alembic migration [1].

 Unfortunately, I am getting the following error when running tests:

 OperationalError: (OperationalError) table event_type already exists
 u'\nCREATE TABLE event_type (\n\tid INTEGER NOT NULL, \n\tdesc
 VARCHAR(255), \n\tPRIMARY KEY (id), \n\tUNIQUE (desc)\n)\n\n' ()

 The migration adds the event_type table. I've seen this error occur
 before when using SQLite due to SQLite's ALTER TABLE statement not
 allowing the rename of a column. In the sqlalchemy-migrate migration, I
 had a specialized SQLite migration upgrade [2] and downgrade [3]
script,
 but I'm not sure how I am supposed to handle this in Alembic. Could
 someone help me out?

 Thanks,
 -jay

 [1]
 
https://review.openstack.org/#/c/41316/16/ceilometer/storage/sqlalchemy/
alembic/versions/49036dfd_add_event_types.py

 [2]
 
https://review.openstack.org/#/c/41316/14/ceilometer/storage/sqlalchemy/
migrate_repo/versions/013_sqlite_upgrade.sql

 [3]
 
https://review.openstack.org/#/c/41316/14/ceilometer/storage/sqlalchemy/
migrate_repo/versions/013_sqlite_downgrade.sql


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[openstack-dev] [Ceilometer] Adding TraitType Storage Model

2013-08-17 Thread Herndon, John Luke (HPCS - Ft. Collins)
Hi - 

After discussion with Jay Pipes about this bug
(https://bugs.launchpad.net/ceilometer/+bug/1211015), I'd like to split
out a new TraitType table in the storage layer, and remove the UniqueName
table. A TraitType is the name of the trait and the data type (i.e.,
string, int, floatĀŠ). I'd like to get some input on this change - maybe
it's over kill? Here is my rationale for adding this table:

1) The current query to return all trait names is slow, as stated in the
bug report.
3) All instances of event X will have the same traits, and all instances
of a trait have the same trait type name and data type. I think it is
cleaner to model this relationship in the db with an explicit TraitType
table.
2) The api needs a model for trait types in order to fulfill the
/v2/event_types/Foo/trait_type query. This call will return the set of
trait names and data types, but no trait data.

Related patches:
sqlalchemy layer: https://review.openstack.org/#/c/42407/ (not sure the
migration is correct)

storage layer: https://review.openstack.org/#/c/41596/


Thanks!
-john


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[openstack-dev] [Ceilometer] Nova_tests failing in jenkins

2013-08-12 Thread Herndon, John Luke (HPCS - Ft. Collins)
Hi - 

The nova_tests are failing for a couple of different Ceilometer reviews,
due to 'module' object has no attribute 'add_driver'.

This review (https://review.openstack.org/#/c/41316/) had nothing to do
with the nova_tests, yet they are failing. Any clue what's going on?

Apologies if there is an obvious answer - I've never encountered this
before.

Thanks,
-john


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Re: [openstack-dev] [Ceilometer] Event API Access Controls

2013-08-05 Thread Herndon, John Luke (HPCS - Ft. Collins)
Hi Julien,

On 8/5/13 2:04 AM, Julien Danjou jul...@danjou.info wrote:

On Sat, Aug 03 2013, Herndon, John Luke (HPCS - Ft. Collins) wrote:

Hi John,

 Hello, I'm currently implementing the event api blueprint[0], and am
 wondering what access controls we should impose on the event api. The
 purpose of the blueprint is to provide a StackTach equivalent in the
 ceilometer api. I believe that StackTach is used as an internal tool
which
 end with no access to end users. Given that the event api is targeted at
 administrators, I am currently thinking that it should be limited to
admin
 users only. However, I wanted to ask for input on this topic. Any
arguments
 for opening it up so users can look at events for their resources? Any
 arguments for not doing so?

You should definitely use the policy system we has in Ceilometer to
check that the user is authenticated and has admin privileges. We
already have such a mechanism in ceilometer.api.acl.

I don't see any point to expose raw operator system data to the users.
That could even be dangerous security wise.

This plans sounds good to me. We can enable/disable the event api for
users, but is there a way to restrict a user to viewing only his/her
events using the policy system? Or do we not need to do that?

-john


-- 
Julien Danjou
// Free Software hacker / freelance consultant
// http://julien.danjou.info



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[openstack-dev] [Ceilometer] Event API Access Controls

2013-08-02 Thread Herndon, John Luke (HPCS - Ft. Collins)
Hello, I'm currently implementing the event api blueprint[0], and am
wondering what access controls we should impose on the event api. The
purpose of the blueprint is to provide a StackTach equivalent in the
ceilometer api. I believe that StackTach is used as an internal tool which
end with no access to end users. Given that the event api is targeted at
administrators, I am currently thinking that it should be limited to admin
users only. However, I wanted to ask for input on this topic. Any arguments
for opening it up so users can look at events for their resources? Any
arguments for not doing so? PS -I'm new to the ceilometer project, so let me
introduce myself. My name is John Herndon, and I work for HP. I've been
freed up from a different project and will be working on ceilometer. Thanks,
looking forward to working with everyone! -john  0:
https://blueprints.launchpad.net/ceilometer/+spec/specify-event-api



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