AWS Greengrass: wait some time to check GG daemon status on launch

GG daemon may die due to misconfigurations, but this takes a bit of
time, so wait a bit to check whether the daemon is still alive.

Signed-off-by: Javier Viguera <javier.viguera@digi.com>

meta-digi-dey/recipes-aws/greengrass/greengrass/0002-greengrassd-wait-some-time-to-check-GG-daemon-status.patch

@@ -0,0 +1,35 @@
+From: Javier Viguera <javier.viguera@digi.com>
+Date: Tue, 6 Jun 2017 18:34:10 +0200
+Subject: [PATCH] greengrassd: wait some time to check GG daemon status after
+ launch
+
+GG daemon may die due to misconfigurations, but this takes a bit of
+time, so wait a bit to check whether the daemon is still alive.
+
+Signed-off-by: Javier Viguera <javier.viguera@digi.com>
+---
+ greengrassd | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/greengrassd b/greengrassd
+index 1d4b3ad6dd22..50c922bca3ae 100755
+--- a/greengrassd
++++ b/greengrassd
+@@ -134,13 +134,16 @@ start() {
+     if nohup $COMMAND >/dev/null 2>$CRASH_LOG < /dev/null &
+     then
+         pid=$!
++        # Give GG daemon some time to initialize before checking
++        # whether it's still alive.
++        sleep .5
+         if [ -e "/proc/$pid" ]
+         then
+             echo "PID: $pid"
+             echo "$pid" > $PID_FILE
+             echo "Greengrass daemon started"
+         else
+-            echo "Greengrass daemon $pid crashed after start"
++            echo "Greengrass daemon $pid crashed after start: check ${CRASH_LOG}"
+             exit 1
+         fi
+     else

meta-digi-dey/recipes-aws/greengrass/greengrass_0.9.0.bb

@@ -66,6 +66,7 @@ LIC_FILES_CHKSUM = " \
 SRC_URI = " \
     http:///not/exist/greengrass-linux-armv6l-${PV}-release.tar.gz \
     file://0001-greengrassd-remove-bashisms-in-launcher-shell-script.patch \
+    file://0002-greengrassd-wait-some-time-to-check-GG-daemon-status.patch \
 "
 SRC_URI[md5sum] = "eb7e6dbdfe00e51db8b7ffbd2284ae59"
 SRC_URI[sha256sum] = "24da4016345eeeb6a86067619d385015139437fbd16dba9a91461758692f933f"