delta/openstack/taskflow.git/taskflow/persistence/backends/impl_sqlalchemy.py, branch 2.9.0

Replace retrying with tenacity

2016-11-03T13:36:16+00:00

This patch replaces the legacy retrying library with the newer
and more convenient tenacity one, taking into account that:
1) retrying uses milliseconds for wait times, but tenacity uses seconds;
2) retrying has a lot of numeric arguments for specifying behaviour
of decorated functions, while tenacity has a few of them, which are
specialized objects, thus making the retry-decorator more flexible.

Change-Id: I4b165d37b2ecc210f2b94c103b73eaab51529261
Closes-Bug: #1635404

Ensure upgrade for sqlalchemy is protected by a lock

2016-03-20T23:23:03+00:00

Make sure that upgrade() is thread-safe (as it appears not
to be) by using a lock that all connections from the same
engine will use.

Change-Id: I2b2b1be9e797099c8412fc6819465e550b1b934a
Closes-Bug: #1559496

Merge "Use the retrying lib. to do basic sqlalchemy engine validation"

2016-01-09T01:27:54+00:00

Use the retrying lib. to do basic sqlalchemy engine validation

2016-01-06T06:34:43+00:00

Instead of a custom loop and backoff just use the retrying
library to do this same code and delegate the loop complexity
to it instead.

Change-Id: Iaf02cc728d2a2cfc7077300e03d7ef25522717b7

Move all internal blather usage/calls to trace usage/calls

2015-12-18T06:39:14+00:00

Change-Id: I415a81d3b6b15b17a9a91cc2a0681c159172a4e1

Merge "Address concurrent mutation of sqlalchemy backend"

2015-07-17T18:25:33+00:00

Rename logbook module -> models module

2015-07-09T00:04:35+00:00

Since this module contains more than the logbook
class and really is a our generic models that are used
to hold the runtime structure it is more appropriate to
place it under a models module and deprecate the usage
of the old module by placing a warning there (so that
when it is imported that warning is triggered).

Change-Id: I79def5ee08f560d38f2c9dcefd0b33becc2a4d36

Make it possible to see the queries executed (in BLATHER mode)

2015-06-20T16:06:55+00:00

Part of blueprint make-things-speedy

Change-Id: I3ac092e98a492d3a70c7780efb4647d593fa70d1

Address concurrent mutation of sqlalchemy backend

2015-06-15T22:14:02+00:00

In order to prevent a thread from closing a backend
while another thread is getting a connection (which
can result in an engine being created) stop this kind
of concurrent mutation by creating a engine (if it
was not user provided) in the constructor.

In the close the engine dispose is called (which will
according to the docs just create a new pool anyway)
so there is no need to recreate the full engine object
from its same configuration again.

Change-Id: Id1fa3001b3ebbe76bbcdb08ed4add6a9e16ea96b

Move implementations into there own sub-sections

2015-05-02T00:53:41+00:00

Also fixes up some inline-code/examples docs to
correctly display in the generated docs (and
tweaks some URI capitalization).

Change-Id: I001ef2460eb5e9a884ca6db6e8d6f72864191fe7