redis: build with USE_SYSTEMD=yes when systemd is enabled

Compile redis with full systemd support when the chosen init system is
systemd.

Enabling systemd supervision allows redis to communicate the actual
server status (i.e. "Loading dataset", "Waiting for master<->replica
sync") to systemd, instead of declaring readiness right after
initializing the server process.

Signed-off-by: Zheng Qiu <zheng.qiu@windriver.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-extended/redis/redis-7/redis.service

@@ -9,6 +9,7 @@ ExecStart=/usr/bin/redis-server /etc/redis/redis.conf
 ExecStop=/usr/bin/redis-cli shutdown
 Restart=always
 LimitNOFILE=10032
+Type=notify
 
 [Install]
 WantedBy=multi-user.target

meta-oe/recipes-extended/redis/redis_7.0.4.bb

@@ -35,7 +35,10 @@ USERADD_PACKAGES = "${PN}"
 USERADD_PARAM:${PN}  = "--system --home-dir /var/lib/redis -g redis --shell /bin/false redis"
 GROUPADD_PARAM:${PN} = "--system redis"
 
-REDIS_ON_SYSTEMD = "${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'true', 'false', d)}"
+PACKAGECONFIG = "${@bb.utils.filter('DISTRO_FEATURES', 'systemd', d)}"
+PACKAGECONFIG[systemd] = "USE_SYSTEMD=yes,USE_SYSTEMD=no,systemd"
+
+EXTRA_OEMAKE += "${PACKAGECONFIG_CONFARGS}"
 
 do_compile:prepend() {
     (cd deps && oe_runmake hiredis lua linenoise)
@@ -55,8 +58,9 @@ do_install() {
     install -m 0644 ${WORKDIR}/redis.service ${D}${systemd_system_unitdir}
     sed -i 's!/usr/sbin/!${sbindir}/!g' ${D}${systemd_system_unitdir}/redis.service
 
-    if [ "${REDIS_ON_SYSTEMD}" = true ]; then
+    if ${@bb.utils.contains('DISTRO_FEATURES', 'systemd', 'true', 'false', d)}; then
         sed -i 's!daemonize yes!# daemonize yes!' ${D}/${sysconfdir}/redis/redis.conf
+        sed -i 's!supervised no!supervised systemd!' ${D}/${sysconfdir}/redis/redis.conf
     fi
 }