[Asterisk-code-review] sd notify (systemd status notifications) support (asterisk[14])
George Joseph
asteriskteam at digium.com
Tue Sep 20 09:13:07 CDT 2016
George Joseph has uploaded a new change for review.
https://gerrit.asterisk.org/3929
Change subject: sd_notify (systemd status notifications) support
......................................................................
sd_notify (systemd status notifications) support
sd_notify() is used to notify systemd of changes to the status of the
process. This allows the systemd daemon to know when the process
finished loading (and thus only start another program after Asterisk has
finished loading).
To use this, use a systemd unit with 'Type=notify' for Asterisk.
This commit also adds the function ast_sd_notify(), a wrapper around
sd_notify that does nothing if not built with systemd support.
Also adds support for libsystemd detection in the configure script.
Change-Id: Ied6a59dafd5ef331c5c7ae8f3ccd2dfc94be7811
(cherry picked from commit 07b95f7c65b7c083724f1af2b26f93cc22cad58c)
---
M CHANGES
M configure
M configure.ac
M include/asterisk/autoconfig.h.in
M include/asterisk/io.h
M main/Makefile
M main/asterisk.c
M main/io.c
M main/loader.c
M makeopts.in
10 files changed, 165 insertions(+), 6 deletions(-)
git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/29/3929/1
diff --git a/CHANGES b/CHANGES
index 8397442..350c00c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -77,6 +77,12 @@
instance, allows a channel to immediately exit the ConfBridge without having
to wait for a leave announcement to play.
+Core
+------------------
+ * If Asterisk is built with systemd support, and run under systemd, it will
+ notify systemd of its state using sd_notify. Use 'Type=notify' in
+ asterisk.service.
+
------------------------------------------------------------------------------
--- Functionality changes from Asterisk 13 to Asterisk 14 --------------------
------------------------------------------------------------------------------
diff --git a/configure b/configure
index 04613c3..c9cd624 100755
--- a/configure
+++ b/configure
@@ -639,6 +639,11 @@
PBX_SYSLOG_FACILITY_LOG_CRON
PBX_SYSLOG_FACILITY_LOG_AUTHPRIV
PBX_SYSLOG_FACILITY_LOG_AUTH
+SYSTEMD_LIBS
+SYSTEMD_CFLAGS
+SYSTEMD_INCLUDE
+SYSTEMD_LIB
+PBX_SYSTEMD
PBX_GENERIC_ODBC
GENERIC_ODBC_INCLUDE
GENERIC_ODBC_LIB
@@ -1316,6 +1321,7 @@
docdir
oldincludedir
includedir
+runstatedir
localstatedir
sharedstatedir
sysconfdir
@@ -1455,7 +1461,9 @@
GMIME_CFLAGS
GMIME_LIBS
GTK2_CFLAGS
-GTK2_LIBS'
+GTK2_LIBS
+SYSTEMD_CFLAGS
+SYSTEMD_LIBS'
# Initialize some variables set by options.
@@ -1494,6 +1502,7 @@
sysconfdir='${prefix}/etc'
sharedstatedir='${prefix}/com'
localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
includedir='${prefix}/include'
oldincludedir='/usr/include'
docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1746,6 +1755,15 @@
| -silent | --silent | --silen | --sile | --sil)
silent=yes ;;
+ -runstatedir | --runstatedir | --runstatedi | --runstated \
+ | --runstate | --runstat | --runsta | --runst | --runs \
+ | --run | --ru | --r)
+ ac_prev=runstatedir ;;
+ -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+ | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+ | --run=* | --ru=* | --r=*)
+ runstatedir=$ac_optarg ;;
+
-sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
ac_prev=sbindir ;;
-sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1883,7 +1901,7 @@
for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
datadir sysconfdir sharedstatedir localstatedir includedir \
oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
- libdir localedir mandir
+ libdir localedir mandir runstatedir
do
eval ac_val=\$$ac_var
# Remove trailing slashes.
@@ -2036,6 +2054,7 @@
--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
--localstatedir=DIR modifiable single-machine data [PREFIX/var]
+ --runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
--libdir=DIR object code libraries [EPREFIX/lib]
--includedir=DIR C header files [PREFIX/include]
--oldincludedir=DIR C header files for non-gcc [/usr/include]
@@ -2207,6 +2226,10 @@
GMIME_LIBS linker flags for GMIME, overriding pkg-config
GTK2_CFLAGS C compiler flags for GTK2, overriding pkg-config
GTK2_LIBS linker flags for GTK2, overriding pkg-config
+ SYSTEMD_CFLAGS
+ C compiler flags for SYSTEMD, overriding pkg-config
+ SYSTEMD_LIBS
+ linker flags for SYSTEMD, overriding pkg-config
Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.
@@ -34668,6 +34691,98 @@
+
+
+
+
+ if test "x${PBX_SYSTEMD}" != "x1" -a "${USE_SYSTEMD}" != "no"; then
+
+pkg_failed=no
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SYSTEMD" >&5
+$as_echo_n "checking for SYSTEMD... " >&6; }
+
+if test -n "$SYSTEMD_CFLAGS"; then
+ pkg_cv_SYSTEMD_CFLAGS="$SYSTEMD_CFLAGS"
+ elif test -n "$PKG_CONFIG"; then
+ if test -n "$PKG_CONFIG" && \
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libsystemd\""; } >&5
+ ($PKG_CONFIG --exists --print-errors "libsystemd") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ pkg_cv_SYSTEMD_CFLAGS=`$PKG_CONFIG --cflags "libsystemd" 2>/dev/null`
+ test "x$?" != "x0" && pkg_failed=yes
+else
+ pkg_failed=yes
+fi
+ else
+ pkg_failed=untried
+fi
+if test -n "$SYSTEMD_LIBS"; then
+ pkg_cv_SYSTEMD_LIBS="$SYSTEMD_LIBS"
+ elif test -n "$PKG_CONFIG"; then
+ if test -n "$PKG_CONFIG" && \
+ { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libsystemd\""; } >&5
+ ($PKG_CONFIG --exists --print-errors "libsystemd") 2>&5
+ ac_status=$?
+ $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; then
+ pkg_cv_SYSTEMD_LIBS=`$PKG_CONFIG --libs "libsystemd" 2>/dev/null`
+ test "x$?" != "x0" && pkg_failed=yes
+else
+ pkg_failed=yes
+fi
+ else
+ pkg_failed=untried
+fi
+
+
+
+if test $pkg_failed = yes; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+ _pkg_short_errors_supported=yes
+else
+ _pkg_short_errors_supported=no
+fi
+ if test $_pkg_short_errors_supported = yes; then
+ SYSTEMD_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "libsystemd" 2>&1`
+ else
+ SYSTEMD_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "libsystemd" 2>&1`
+ fi
+ # Put the nasty error message in config.log where it belongs
+ echo "$SYSTEMD_PKG_ERRORS" >&5
+
+
+ PBX_SYSTEMD=0
+
+
+elif test $pkg_failed = untried; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+
+ PBX_SYSTEMD=0
+
+
+else
+ SYSTEMD_CFLAGS=$pkg_cv_SYSTEMD_CFLAGS
+ SYSTEMD_LIBS=$pkg_cv_SYSTEMD_LIBS
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+
+ PBX_SYSTEMD=1
+ SYSTEMD_INCLUDE="$SYSTEMD_CFLAGS"
+ SYSTEMD_LIB="$SYSTEMD_LIBS"
+
+$as_echo "#define HAVE_SYSTEMD 1" >>confdefs.h
+
+
+fi
+ fi
+
+
PBX_SYSLOG=0
if test "${ac_cv_header_syslog_h}" = "yes"; then
diff --git a/configure.ac b/configure.ac
index 54e612c..912de6b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2627,6 +2627,11 @@
AC_SUBST([GENERIC_ODBC_INCLUDE])
AC_SUBST([PBX_GENERIC_ODBC])
+AC_SUBST([PBX_SYSTEMD])
+AC_SUBST([SYSTEMD_LIB])
+AC_SUBST([SYSTEMD_INCLUDE])
+AST_PKG_CONFIG_CHECK([SYSTEMD], [libsystemd])
+
PBX_SYSLOG=0
if test "${ac_cv_header_syslog_h}" = "yes"; then
diff --git a/include/asterisk/autoconfig.h.in b/include/asterisk/autoconfig.h.in
index 08c68c1..efba812 100644
--- a/include/asterisk/autoconfig.h.in
+++ b/include/asterisk/autoconfig.h.in
@@ -1024,6 +1024,9 @@
/* Define to 1 if you have the <syslog.h> header file. */
#undef HAVE_SYSLOG_H
+/* Define if your system has the SYSTEMD libraries. */
+#undef HAVE_SYSTEMD
+
/* Define to 1 if you have the <sys/dir.h> header file, and it defines `DIR'.
*/
#undef HAVE_SYS_DIR_H
diff --git a/include/asterisk/io.h b/include/asterisk/io.h
index 2bddd37..6ee8450 100644
--- a/include/asterisk/io.h
+++ b/include/asterisk/io.h
@@ -139,6 +139,16 @@
int ast_get_termcols(int fd);
+/*!
+ * \brief a wrapper for sd_notify(): notify systemd of any state changes.
+ * \param state a string that states the changes. See sd_notify(3).
+ * The wrapper does nothing if systemd ('s development headers) was not
+ * detected on the system.
+ * \returns >=0 on success, negative value on error.
+ */
+int ast_sd_notify(const char *state);
+
+
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
diff --git a/main/Makefile b/main/Makefile
index a6c3ab1..d41302a 100644
--- a/main/Makefile
+++ b/main/Makefile
@@ -45,6 +45,7 @@
AST_LIBS+=$(CRYPT_LIB)
AST_LIBS+=$(AST_CLANG_BLOCKS_LIBS)
AST_LIBS+=$(RT_LIB)
+AST_LIBS+=$(SYSTEMD_LIB)
ifneq ($(findstring $(OSARCH), linux-gnu uclinux linux-uclibc linux-musl kfreebsd-gnu),)
ifneq ($(findstring LOADABLE_MODULES,$(MENUSELECT_CFLAGS)),)
diff --git a/main/asterisk.c b/main/asterisk.c
index 7b1338c..c9e3b59 100644
--- a/main/asterisk.c
+++ b/main/asterisk.c
@@ -2039,6 +2039,9 @@
ast_module_shutdown();
}
+ if (!restart) {
+ ast_sd_notify("STOPPING=1");
+ }
if (ast_opt_console || (ast_opt_remote && !ast_opt_exec)) {
ast_el_write_default_histfile();
if (consolethread == AST_PTHREADT_NULL || consolethread == pthread_self()) {
@@ -4566,6 +4569,7 @@
ast_register_cleanup(main_atexit);
run_startup_commands();
+ ast_sd_notify("READY=1");
ast_verb(0, COLORIZE_FMT "\n", COLORIZE(COLOR_BRGREEN, 0, "Asterisk Ready."));
diff --git a/main/io.c b/main/io.c
index ff5ca57..3441fba 100644
--- a/main/io.c
+++ b/main/io.c
@@ -36,6 +36,9 @@
#include "asterisk/io.h"
#include "asterisk/utils.h"
+#ifdef HAVE_SYSTEMD
+#include <systemd/sd-daemon.h>
+#endif
#ifdef DEBUG_IO
#define DEBUG DEBUG_M
@@ -384,3 +387,10 @@
return cols;
}
+int ast_sd_notify(const char *state) {
+#ifdef HAVE_SYSTEMD
+ return sd_notify(0, state);
+#else
+ return 0;
+#endif
+}
diff --git a/main/loader.c b/main/loader.c
index f959221..36a3d5f 100644
--- a/main/loader.c
+++ b/main/loader.c
@@ -891,6 +891,7 @@
res = AST_MODULE_RELOAD_IN_PROGRESS;
goto module_reload_exit;
}
+ ast_sd_notify("RELOAD=1");
ast_lastreloadtime = ast_tvnow();
if (ast_opt_lock_confdir) {
@@ -904,9 +905,8 @@
}
if (res != AST_LOCK_SUCCESS) {
ast_log(AST_LOG_WARNING, "Cannot grab lock on %s\n", ast_config_AST_CONFIG_DIR);
- ast_mutex_unlock(&reloadlock);
res = AST_MODULE_RELOAD_ERROR;
- goto module_reload_exit;
+ goto module_reload_done;
}
}
@@ -923,8 +923,7 @@
if (ast_opt_lock_confdir) {
ast_unlock_path(ast_config_AST_CONFIG_DIR);
}
- ast_mutex_unlock(&reloadlock);
- goto module_reload_exit;
+ goto module_reload_done;
}
AST_DLLIST_LOCK(&module_list);
@@ -966,7 +965,9 @@
if (ast_opt_lock_confdir) {
ast_unlock_path(ast_config_AST_CONFIG_DIR);
}
+module_reload_done:
ast_mutex_unlock(&reloadlock);
+ ast_sd_notify("READY=1");
module_reload_exit:
publish_reload_message(name, res);
diff --git a/makeopts.in b/makeopts.in
index 8583e19..d674355 100644
--- a/makeopts.in
+++ b/makeopts.in
@@ -256,6 +256,10 @@
SS7_INCLUDE=@SS7_INCLUDE@
SS7_LIB=@SS7_LIB@
+HAVE_SYSTEMD=@PBX_SYSTEMD@
+SYSTEMD_INCLUDE=@SYSTEMD_INCLUDE@
+SYSTEMD_LIB=@SYSTEMD_LIB@
+
OPENR2_INCLUDE=@OPENR2_INCLUDE@
OPENR2_LIB=@OPENR2_LIB@
--
To view, visit https://gerrit.asterisk.org/3929
To unsubscribe, visit https://gerrit.asterisk.org/settings
Gerrit-MessageType: newchange
Gerrit-Change-Id: Ied6a59dafd5ef331c5c7ae8f3ccd2dfc94be7811
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: 14
Gerrit-Owner: George Joseph <gjoseph at digium.com>
Gerrit-Reviewer: Tzafrir Cohen <tzafrir.cohen at xorcom.com>
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