Features include:
* Not forking into two processes (shells out to zwrite to send
instead). This makes life easier since we're not doing concurrent
programming.
* Eliminated a lot of hard-to-read or unnecessary debugging output.
* Adding explanatory test suggesting the likely problem for some
common sets of received messages.
* Much less code duplication.
* Support for testing a sharded zephyr_mirror script (--sharded).
* Use of the logging module to print timestamps -- makes debugging
some issues a lot.
* Only one sleep, and for only 10 seconds, between sending the
outgoing messages and checking that they were received.
* Support for running two copies of this script at the same time, so that
running it manually doesn't screw up Nagios.
* Passed running 100 tests run in a row.
(imported from commit a3ec02ac1d1a04972e469ca30fec1790c4fb53bc)
It seems that check-mirroring was reporting a lot of spurious failures
due to it sometimes taking more than 3 seconds for the setup phase of
check-mirroring's receive path to run. So fix this:
(1) Wait a bit more than 3 seconds for the receiver to subscribe to
messages
(2) Subscribe to Humbug messages before forking (we can't do this with
zephyr.init() because python-zephyr gets totally messed up if you use
it from multiple processes with a shared initialization)
(3) Get rid of the old time.sleep(0.x) values that were intended to
make messages arrive in order -- since we're now checking that
messages correctly arrived using set(), they aren't needed.
(4) Use a single request to subscribe to both zephyr classes we need
to subscribe to (saves 1 RTT).
(imported from commit d96aef05405ce43e9a4a549de189da9a2e393875)
Sometimes messages are delayed passed the allowed 10 seconds. We may
eventually decide that that amount of latency is unacceptable, but the
latency is not what this script is supposed to be checking.
(imported from commit d83a6a83d60e9eac13b3b87fb31de7f9881acabf)
This commit changes APIs and requires and update of all zephyr
mirroring bots to deploy properly.
(imported from commit 2672d2d07269379f7a865644aaeb6796d54183e1)
Personals are now just private messages between two people (which
sometimes manifests as a private message with one recipient). The
new message type on the send path is 'private'. Note that the receive
path still has 'personal' and 'huddle' message types.
(imported from commit 97a438ef5c0b3db4eb3e6db674ea38a081265dd3)
This happens sometimes (especially when our server is restarting), and
isn't a _real_ problem -- it's much more important that we have a
completely reliable test that we can put a Nagios alert against.
(imported from commit 0add0b3dfc5447307014bbb9137366bd7141ade0)
Keegan McAllister
Tim Abbott
Jessica McKellar
Zev Benjamin