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HTTP: Stop accepting requests on final system shutdown.

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There are three CLI commands to stop and restart Asterisk each.

1) core stop/restart now - Hangup all calls and stop or restart Asterisk.
New channels are prevented while the shutdown request is pending.

2) core stop/restart gracefully - Stop or restart Asterisk when there are
no calls remaining in the system.  New channels are prevented while the
shutdown request is pending.

3) core stop/restart when convenient - Stop or restart Asterisk when there
are no calls in the system.  New calls are not prevented while the
shutdown request is pending.

ARI has made stopping/restarting Asterisk more problematic.  While a
shutdown request is pending it is desirable to continue to process ARI
HTTP requests for current calls.  To handle the current calls while a
shutdown request is pending, a new committed to shutdown phase is needed
so ARI applications can deal with the calls until the system is fully
committed to shutdown.

* Added a new shutdown committed phase so ARI applications can deal with
calls until the final committed to shutdown phase is reached.

* Made refuse new HTTP requests when the system has reached the final
system shutdown phase.  Starting anything while the system is actively
releasing resources and unloading modules is not a good thing.

* Split the bridging framework shutdown to not cleanup the global bridging
containers when shutting down in a hurry.  This is similar to how other
modules prevent crashes on rapid system shutdown.

* Moved ast_begin_shutdown(), ast_cancel_shutdown(), and
ast_shutting_down().  You should not have to include channel.h just to
access these system functions.

ASTERISK-24752 #close
Reported by: Matthew Jordan

Review: https://reviewboard.asterisk.org/r/4399/
........

Merged revisions 431692 from http://svn.asterisk.org/svn/asterisk/branches/13


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@431694 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Richard Mudgett
2015-02-11 17:39:13 +00:00
parent 5a17ed7a38
commit e2d3215b83
10 changed files with 214 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
main/bridge.c
View File

@@ -5322,7 +5322,7 @@ static void bridge_prnt_obj(void *v_obj, void *where, ao2_prnt_fn *prnt)
/*!
* \internal
* \brief Shutdown the bridging system.
* \brief Shutdown the bridging system. Stuff to always do.
* \since 12.0.0
*
* \return Nothing
@@ -5334,6 +5334,17 @@ static void bridge_shutdown(void)
ast_manager_unregister("BridgeTechnologyUnsuspend");
ast_cli_unregister_multiple(bridge_cli, ARRAY_LEN(bridge_cli));
ao2_container_unregister("bridges");
}
/*!
* \internal
* \brief Shutdown the bridging system. More stuff to do on graceful shutdown.
* \since 13.3.0
*
* \return Nothing
*/
static void bridge_cleanup(void)
{
ao2_cleanup(bridges);
bridges = NULL;
ao2_cleanup(bridge_manager);
@@ -5342,6 +5353,7 @@ static void bridge_shutdown(void)
int ast_bridging_init(void)
{
ast_register_cleanup(bridge_cleanup);
ast_register_atexit(bridge_shutdown);
if (ast_stasis_bridging_init()) {