diff -uap httpd-2.4.27/modules/arch/unix/config5.m4.systemd httpd-2.4.27/modules/arch/unix/config5.m4
diff -uap httpd-2.4.27/modules/arch/unix/config5.m4.systemd httpd-2.4.27/modules/arch/unix/config5.m4
diff -uap httpd-2.4.27/modules/arch/unix/config5.m4.systemd httpd-2.4.27/modules/arch/unix/config5.m4
diff -uap httpd-2.4.27/modules/arch/unix/config5.m4.systemd httpd-2.4.27/modules/arch/unix/config5.m4
--- httpd-2.4.27/modules/arch/unix/config5.m4.systemd
+++ httpd-2.4.27/modules/arch/unix/config5.m4
@@ -18,6 +18,16 @@
fi
])
+APACHE_MODULE(systemd, Systemd support, , , all, [
+ if test "${ac_cv_header_systemd_sd_daemon_h}" = "no" || test -z "${SYSTEMD_LIBS}"; then
+ AC_MSG_WARN([Your system does not support systemd.])
+ enable_systemd="no"
+ else
+ APR_ADDTO(MOD_SYSTEMD_LDADD, [$SYSTEMD_LIBS])
+ enable_systemd="yes"
+ fi
+])
+
APR_ADDTO(INCLUDES, [-I\$(top_srcdir)/$modpath_current])
APACHE_MODPATH_FINISH
diff -uap httpd-2.4.27/modules/arch/unix/mod_systemd.c.systemd httpd-2.4.27/modules/arch/unix/mod_systemd.c
--- httpd-2.4.27/modules/arch/unix/mod_systemd.c.systemd
+++ httpd-2.4.27/modules/arch/unix/mod_systemd.c
@@ -0,0 +1,161 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <stdint.h>
+#include <ap_config.h>
+#include "ap_mpm.h"
+#include <http_core.h>
+#include <httpd.h>
+#include <http_log.h>
+#include <apr_version.h>
+#include <apr_pools.h>
+#include <apr_strings.h>
+#include "unixd.h"
+#include "scoreboard.h"
+#include "mpm_common.h"
+
+#include "systemd/sd-daemon.h"
+
+#if APR_HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+static int shutdown_timer = 0;
+static int shutdown_counter = 0;
+static unsigned long bytes_served;
+static pid_t mainpid;
+
+static int systemd_pre_config(apr_pool_t *pconf, apr_pool_t *plog,
+ apr_pool_t *ptemp)
+{
+ sd_notify(0,
+ "RELOADING=1\n"
+ "STATUS=Reading configuration...\n");
+ ap_extended_status = 1;
+ return OK;
+}
+
+static int systemd_pre_mpm(apr_pool_t *p, ap_scoreboard_e sb_type)
+{
+ int rv;
+
+ mainpid = getpid();
+
+ rv = sd_notifyf(0, "READY=1\n"
+ "STATUS=Processing requests...\n"
+ "MAINPID=%" APR_PID_T_FMT, mainpid);
+ if (rv < 0) {
+ ap_log_perror(APLOG_MARK, APLOG_ERR, 0, p, APLOGNO(02395)
+ "sd_notifyf returned an error %d", rv);
+ }
+
+ return OK;
+}
+
+static int systemd_monitor(apr_pool_t *p, server_rec *s)
+{
+ ap_sload_t sload;
+ apr_interval_time_t up_time;
+ char bps[5];
+ int rv;
+
+ if (!ap_extended_status) {
+ /* Nothing useful to report if ExtendedStatus disabled. */
+ return DECLINED;
+ }
+
+ ap_get_sload(&sload);
+ /* up_time in seconds */
+ up_time = (apr_uint32_t) apr_time_sec(apr_time_now() -
+ ap_scoreboard_image->global->restart_time);
+
+ apr_strfsize((unsigned long)((float) (sload.bytes_served)
+ / (float) up_time), bps);
+
+ rv = sd_notifyf(0, "READY=1\n"
+ "STATUS=Total requests: %lu; Idle/Busy workers %d/%d;"
+ "Requests/sec: %.3g; Bytes served/sec: %sB/sec\n",
+ sload.access_count, sload.idle, sload.busy,
+ ((float) sload.access_count) / (float) up_time, bps);
+
+ if (rv < 0) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(02396)
+ "sd_notifyf returned an error %d", rv);
+ }
+
+ /* Shutdown httpd when nothing is sent for shutdown_timer seconds. */
+ if (sload.bytes_served == bytes_served) {
+ /* mpm_common.c: INTERVAL_OF_WRITABLE_PROBES is 10 */
+ shutdown_counter += 10;
+ if (shutdown_timer > 0 && shutdown_counter >= shutdown_timer) {
+ rv = sd_notifyf(0, "READY=1\n"
+ "STATUS=Stopped as result of IdleShutdown "
+ "timeout.");
+ if (rv < 0) {
+ ap_log_error(APLOG_MARK, APLOG_ERR, 0, s, APLOGNO(02804)
+ "sd_notifyf returned an error %d", rv);
+ }
+ kill(mainpid, AP_SIG_GRACEFUL);
+ }
+ }
+ else {
+ shutdown_counter = 0;
+ }
+
+ bytes_served = sload.bytes_served;
+
+ return DECLINED;
+}
+
+static void systemd_register_hooks(apr_pool_t *p)
+{
+ /* Enable ap_extended_status. */
+ ap_hook_pre_config(systemd_pre_config, NULL, NULL, APR_HOOK_LAST);
+ /* We know the PID in this hook ... */
+ ap_hook_pre_mpm(systemd_pre_mpm, NULL, NULL, APR_HOOK_LAST);
+ /* Used to update httpd's status line using sd_notifyf */
+ ap_hook_monitor(systemd_monitor, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+static const char *set_shutdown_timer(cmd_parms *cmd, void *dummy,
+ const char *arg)
+{
+ const char *err = ap_check_cmd_context(cmd, GLOBAL_ONLY);
+ if (err != NULL) {
+ return err;
+ }
+
+ shutdown_timer = atoi(arg);
+ return NULL;
+}
+
+static const command_rec systemd_cmds[] =
+{
+AP_INIT_TAKE1("IdleShutdown", set_shutdown_timer, NULL, RSRC_CONF,
+ "Number of seconds in idle-state after which httpd is shutdown"),
+ {NULL}
+};
+
+AP_DECLARE_MODULE(systemd) = {
+ STANDARD20_MODULE_STUFF,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ systemd_cmds,
+ systemd_register_hooks,
+};