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This is an automatically generated e-mail. To reply, visit:
<a href="https://reviewboard.asterisk.org/r/2672/">https://reviewboard.asterisk.org/r/2672/</a>
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<div>Review request for Asterisk Developers.</div>
<div>By David Lee.</div>
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<b style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Bugs: </b>
<a href="https://issues.asterisk.org/jira/browse/ASTERISK-22002">ASTERISK-22002</a>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
Asterisk
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">In working with res_stasis, I discovered a significant limitation to
the current structure of stasis_caching_topics: you cannot subscribe
to cache updates for a single channel/bridge/endpoint/etc.
To address this, this patch splits the cache away from the
stasis_caching_topic, making it a first class object. The stasis_cache
object is shared amongst individual stasis_caching_topics that are
created per channel/endpoint/etc. These are still forwarded to global
whatever_all_cached topics, so their use from most of the code does
not change.
In making these changes, I noticed that we frequently used a similar
pattern for bridges, endpoints and channels:
single_topic ----------------> all_topic
^
|
single_topic_cached ----+----> all_topic_cached
|
+----> cache
This pattern was extracted as the 'Stasis Caching Pattern', defined in
stasis_caching_pattern.h. This avoids a lot of duplicate code between
the different domain objects.
Since the cache is now disassociated from its upstream caching topics,
this also necessitated a change to how the 'guaranteed' flag worked
for retrieving from a cache. The code for handling the caching
guarantee was extracted into a 'stasis_topic_wait' function, which
works for any stasis_topic.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Tests pass.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
<ul style="margin-left: 3em; padding-left: 0;">
<li>/trunk/include/asterisk/channel.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/bridging.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/app.h <span style="color: grey">(394264)</span></li>
<li>/trunk/channels/sig_pri.c <span style="color: grey">(394264)</span></li>
<li>/trunk/channels/chan_unistim.c <span style="color: grey">(394264)</span></li>
<li>/trunk/channels/chan_sip.c <span style="color: grey">(394264)</span></li>
<li>/trunk/channels/chan_mgcp.c <span style="color: grey">(394264)</span></li>
<li>/trunk/channels/chan_iax2.c <span style="color: grey">(394264)</span></li>
<li>/trunk/channels/chan_gulp.c <span style="color: grey">(394264)</span></li>
<li>/trunk/channels/chan_dahdi.c <span style="color: grey">(394264)</span></li>
<li>/trunk/apps/confbridge/confbridge_manager.c <span style="color: grey">(394264)</span></li>
<li>/trunk/apps/app_voicemail.c <span style="color: grey">(394264)</span></li>
<li>/trunk/apps/app_meetme.c <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/channel_internal.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/devicestate.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/presencestate.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/stasis.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/stasis_bridging.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/stasis_cache_pattern.h <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/include/asterisk/stasis_channels.h <span style="color: grey">(394264)</span></li>
<li>/trunk/include/asterisk/stasis_endpoints.h <span style="color: grey">(394264)</span></li>
<li>/trunk/main/app.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/bridging.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/cdr.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/cel.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/channel_internal_api.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/cli.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/devicestate.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/endpoints.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/manager.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/manager_bridging.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/manager_channels.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/manager_endpoints.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/pbx.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/presencestate.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/stasis.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/stasis_bridging.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/stasis_cache.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/stasis_cache_pattern.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/main/stasis_channels.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/stasis_endpoints.c <span style="color: grey">(394264)</span></li>
<li>/trunk/main/stasis_wait.c <span style="color: grey">(PRE-CREATION)</span></li>
<li>/trunk/res/res_agi.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/res_chan_stats.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/res_sip_mwi.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/res_stasis.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/res_xmpp.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/stasis/control.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/stasis_http/resource_bridges.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/stasis_http/resource_channels.c <span style="color: grey">(394264)</span></li>
<li>/trunk/res/stasis_http/resource_endpoints.c <span style="color: grey">(394264)</span></li>
<li>/trunk/tests/test_cel.c <span style="color: grey">(394264)</span></li>
<li>/trunk/tests/test_devicestate.c <span style="color: grey">(394264)</span></li>
<li>/trunk/tests/test_stasis.c <span style="color: grey">(394264)</span></li>
<li>/trunk/tests/test_stasis_endpoints.c <span style="color: grey">(394264)</span></li>
</ul>
<p><a href="https://reviewboard.asterisk.org/r/2672/diff/" style="margin-left: 3em;">View Diff</a></p>
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