[Multi Asic] support of swss.rec and sairedis.rec for multi asic (#6310)

Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan arlakshm@microsoft.com

- Why I did it
This PR has the changes to support having different swss.rec and sairedis.rec for each asic.
The logrotate script is updated as well

- How I did it

Update the orchagent.sh script to use the logfile name options in these PRs(Azure/sonic-swss#1546 and Azure/sonic-sairedis#747)
In multi asic platforms the record files will be different for each asic, with the format swss.asic{x}.rec and sairedis.asic{x}.rec

Update the logrotate script for multiasic platform .

dockers/docker-orchagent/orchagent.sh

@@ -41,6 +41,11 @@ then
     ORCHAGENT_ARGS+="-i $asic_id "
 fi
 
+# for multi asic platforms add the asic name to the record file names
+if [[ "$NAMESPACE_ID" ]]; then
+    ORCHAGENT_ARGS+="-f swss.asic$NAMESPACE_ID.rec -j sairedis.asic$NAMESPACE_ID.rec "
+fi
+
 # Add platform specific arguments if necessary
 if [ "$platform" == "broadcom" ]; then
     ORCHAGENT_ARGS+="-m $MAC_ADDRESS"

files/image_config/logrotate/logrotate.d/rsyslog

@@ -30,8 +30,8 @@
 /var/log/telemetry.log
 /var/log/frr/bgpd.log
 /var/log/frr/zebra.log
-/var/log/swss/sairedis.rec
-/var/log/swss/swss.rec
+/var/log/swss/sairedis*.rec
+/var/log/swss/swss*.rec
 {
     size 1M
     rotate 5000
@@ -85,7 +85,22 @@
     endscript
     postrotate
         if [ $(echo $1 | grep -c "/var/log/swss/") -gt 0 ]; then
-            pgrep -x orchagent | xargs /bin/kill -HUP 2>/dev/null || true
+            # for multi asic platforms, there are multiple orchagents
+            # send the SIGHUP only to the orchagent the which needs log file rotation
+            PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
+            ASIC_CONF=/usr/share/sonic/device/$PLATFORM/asic.conf
+            if [ -f "$ASIC_CONF" ]; then
+                . $ASIC_CONF
+            fi
+            if [ $NUM_ASIC -gt 1 ]; then
+                log_file=$1
+                log_file_name=${log_file#/var/log/swss/}
+                logger -p syslog.info -t "logrotate" "Sending SIGHUP to OA log_file_name: $log_file_name"
+                pgrep -xa orchagent | grep $log_file_name | awk '{ print $1; }' | xargs /bin/kill -HUP 2>/dev/null || true
+            else
+                logger -p syslog.info -t "logrotate" "Sending SIGHUP to OA log_file_name: $1"
+                pgrep -x orchagent | xargs /bin/kill -HUP 2>/dev/null || true
+            fi
         else
             /bin/kill -HUP $(cat /var/run/rsyslogd.pid)
         fi