* [gentoo-portage-dev] [PATCH 0/4] rsync: add key refresh retry (bug 649276)
@ 2018-04-01 2:46 99% Zac Medico
0 siblings, 0 replies; 1+ results
From: Zac Medico @ 2018-04-01 2:46 UTC (permalink / raw
To: gentoo-portage-dev; +Cc: Zac Medico
Since key refresh is prone to failure, retry using exponential
backoff with random jitter. This adds the following sync-openpgp-*
configuration settings:
sync-openpgp-key-refresh-retry-count = 40
Maximum number of times to retry key refresh if it fails. Between
each key refresh attempt, there is an exponential delay with a
constant multiplier and a uniform random multiplier between 0 and 1.
sync-openpgp-key-refresh-retry-delay-exp-base = 2
The base of the exponential expression. The exponent is the number
of previous refresh attempts.
sync-openpgp-key-refresh-retry-delay-max = 60
Maximum delay between each retry attempt, in units of seconds. This
places a limit on the length of the exponential delay.
sync-openpgp-key-refresh-retry-delay-mult = 4
Multiplier for the exponential delay.
sync-openpgp-key-refresh-retry-overall-timeout = 1200
Combined time limit for all refresh attempts, in units of seconds.
Bug: https://bugs.gentoo.org/649276
Zac Medico (4):
Add ForkExecutor (bug 649588)
Add ExponentialBackoff and RandomExponentialBackoff
Add retry decorator (API inspired by tenacity)
rsync: add key refresh retry (bug 649276)
cnf/repos.conf | 5 +
man/portage.5 | 19 +++
pym/portage/repository/config.py | 22 ++++
pym/portage/sync/modules/rsync/rsync.py | 16 ++-
pym/portage/sync/syncbase.py | 85 +++++++++++-
pym/portage/tests/util/futures/test_retry.py | 147 +++++++++++++++++++++
pym/portage/util/_eventloop/EventLoop.py | 45 ++++++-
pym/portage/util/backoff.py | 48 +++++++
pym/portage/util/futures/executor/__init__.py | 0
pym/portage/util/futures/executor/fork.py | 130 +++++++++++++++++++
pym/portage/util/futures/futures.py | 6 +
pym/portage/util/futures/retry.py | 178 ++++++++++++++++++++++++++
12 files changed, 697 insertions(+), 4 deletions(-)
create mode 100644 pym/portage/tests/util/futures/test_retry.py
create mode 100644 pym/portage/util/backoff.py
create mode 100644 pym/portage/util/futures/executor/__init__.py
create mode 100644 pym/portage/util/futures/executor/fork.py
create mode 100644 pym/portage/util/futures/retry.py
--
2.13.6
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