[logfile][202012]: Add option to specify swss rec file name (#1946)

**What I did**
Backport #1546 to 202012 branch

Author: judyjoseph

orchagent/main.cpp

@@ -67,7 +67,7 @@ string gRecordFile;
 
 void usage()
 {
-    cout << "usage: orchagent [-h] [-r record_type] [-d record_location] [-b batch_size] [-m MAC] [-i INST_ID] [-s] [-z mode] [-k bulk_size]" << endl;
+    cout << "usage: orchagent [-h] [-r record_type] [-d record_location] [-f swss_rec_filename] [-j sairedis_rec_filename] [-b batch_size] [-m MAC] [-i INST_ID] [-s] [-z mode] [-k bulk_size]" << endl;
     cout << "    -h: display this message" << endl;
     cout << "    -r record_type: record orchagent logs with type (default 3)" << endl;
     cout << "                    0: do not record logs" << endl;
@@ -81,6 +81,8 @@ void usage()
     cout << "    -s: enable synchronous mode (deprecated, use -z)" << endl;
     cout << "    -z: redis communication mode (redis_async|redis_sync|zmq_sync), default: redis_async" << endl;
     cout << "    -k max bulk size in bulk mode (default 1000)";
+    cout << "    -f swss_rec_filename: swss record log filename(default 'swss.rec')" << endl;
+    cout << "    -j sairedis_rec_filename:  sairedis record log filename(default sairedis.rec)" << endl;
 }
 
 void sighup_handler(int signo)
@@ -164,8 +166,10 @@ int main(int argc, char **argv)
     sai_status_t status;
 
     string record_location = ".";
+    string swss_rec_filename = "swss.rec";
+    string sairedis_rec_filename = "sairedis.rec";
 
-    while ((opt = getopt(argc, argv, "b:m:r:d:i:hsz:k:")) != -1)
+    while ((opt = getopt(argc, argv, "b:m:r:f:j:d:i:hsz:k:")) != -1)
     {
         switch (opt)
         {
@@ -244,6 +248,18 @@ int main(int argc, char **argv)
                 }
             }
             break;
+         case 'f':
+            if (optarg)
+             {
+                swss_rec_filename = optarg;
+             }
+             break;
+         case 'j':
+            if (optarg)
+             {
+                sairedis_rec_filename = optarg;
+             }
+             break;
         default: /* '?' */
             exit(EXIT_FAILURE);
         }
@@ -252,7 +268,7 @@ int main(int argc, char **argv)
     SWSS_LOG_NOTICE("--- Starting Orchestration Agent ---");
 
     initSaiApi();
-    initSaiRedis(record_location);
+    initSaiRedis(record_location, sairedis_rec_filename);
 
     sai_attribute_t attr;
     vector<sai_attribute_t> attrs;
@@ -267,7 +283,7 @@ int main(int argc, char **argv)
     /* Disable/enable SwSS recording */
     if (gSwssRecord)
     {
-        gRecordFile = record_location + "/" + "swss.rec";
+        gRecordFile = record_location + "/" + swss_rec_filename;
         gRecordOfs.open(gRecordFile, std::ofstream::out | std::ofstream::app);
         if (!gRecordOfs.is_open())
         {

orchagent/saihelper.cpp

@@ -209,7 +209,7 @@ void initSaiApi()
     sai_log_set((sai_api_t)SAI_API_NAT,         SAI_LOG_LEVEL_NOTICE);
 }
 
-void initSaiRedis(const string &record_location)
+void initSaiRedis(const string &record_location, const std::string &record_filename)
 {
     /**
      * NOTE: Notice that all Redis attributes here are using SAI_NULL_OBJECT_ID
@@ -235,6 +235,19 @@ void initSaiRedis(const string &record_location)
                 record_location.c_str(), status);
             exit(EXIT_FAILURE);
         }
+
+        attr.id = SAI_REDIS_SWITCH_ATTR_RECORDING_FILENAME;
+        attr.value.s8list.count = (uint32_t)record_filename.size();
+        attr.value.s8list.list = (int8_t*)const_cast<char *>(record_filename.c_str());
+
+        status = sai_switch_api->set_switch_attribute(gSwitchId, &attr);
+        if (status != SAI_STATUS_SUCCESS)
+        {
+            SWSS_LOG_ERROR("Failed to set SAI Redis recording logfile to %s, rv:%d",
+                record_filename.c_str(), status);
+            exit(EXIT_FAILURE);
+        }
+
     }
 
     /* Disable/enable SAI Redis recording */

orchagent/saihelper.h

@@ -5,5 +5,5 @@
 #include <string>
 
 void initSaiApi();
-void initSaiRedis(const std::string &record_location);
+void initSaiRedis(const std::string &record_location, const std::string &record_filename);
 sai_status_t initSaiPhyApi(swss::gearbox_phy_t *phy);