[Auto Techsupport] Event driven Techsupport Bug Fixes (sonic-net#1986)

- What I did
Two bugs were found related to this feature. This PR included fixes for this.

1. non-default since argument is not being applied.
Happening because subprocess_exec(["date", "--date='{}'".format(since_cfg)]) is failing. Replacing this with subprocess_exec(["date", "--date={}".format(since_cfg)]) solved the problem.

2. core_cleanup is not working because of the unnecessary recent_file_creation check.

- How I did it
Remove '' from date

- How to verify it
Run manual test flow which found the issue

Signed-off-by: Vivek Reddy Karri <vkarri@nvidia.com>

scripts/coredump_gen_handler.py

@@ -19,10 +19,6 @@
 
 
 def handle_coredump_cleanup(dump_name, db):
-    file_path = os.path.join(CORE_DUMP_DIR, dump_name)
-    if not verify_recent_file_creation(file_path):
-        return
-
     _, num_bytes = get_stats(os.path.join(CORE_DUMP_DIR, CORE_DUMP_PTRN))
 
     if db.get(CFG_DB, AUTO_TS, CFG_STATE) != "enabled":
@@ -57,11 +53,6 @@ def __init__(self, core_name, container_name, db):
         self.core_ts_map = {}
 
     def handle_core_dump_creation_event(self):
-        file_path = os.path.join(CORE_DUMP_DIR, self.core_name)
-        if not verify_recent_file_creation(file_path):
-            syslog.syslog(syslog.LOG_INFO, "Spurious Invocation. {} is not created within last {} sec".format(file_path, TIME_BUF))
-            return
-
         if self.db.get(CFG_DB, AUTO_TS, CFG_STATE) != "enabled":
             syslog.syslog(syslog.LOG_NOTICE, "auto_invoke_ts is disabled. No cleanup is performed: core {}".format(self.core_name))
             return
@@ -106,7 +97,7 @@ def get_since_arg(self):
         since_cfg = self.db.get(CFG_DB, AUTO_TS, CFG_SINCE)
         if not since_cfg:
             return SINCE_DEFAULT
-        rc, _, stderr = subprocess_exec(["date", "--date='{}'".format(since_cfg)], env=ENV_VAR)
+        rc, _, stderr = subprocess_exec(["date", "--date={}".format(since_cfg)], env=ENV_VAR)
         if rc == 0:
             return since_cfg
         return SINCE_DEFAULT
@@ -124,8 +115,8 @@ def invoke_ts_cmd(self, since_cfg):
         cmd_opts = ["show", "techsupport", "--silent", "--since", since_cfg]
         cmd  = " ".join(cmd_opts)
         rc, stdout, stderr = subprocess_exec(cmd_opts, env=ENV_VAR)
-        if not rc:
-            syslog.syslog(syslog.LOG_ERR, "show techsupport failed with exit code {}, stderr:{}".format(rc, stderr))
+        if rc:
+            syslog.syslog(syslog.LOG_ERR, "show techsupport failed with exit code {}, stderr: {}".format(rc, stderr))
         new_dump = self.parse_ts_dump_name(stdout)
         if not new_dump:
             syslog.syslog(syslog.LOG_ERR, "{} was run, but no techsupport dump is found".format(cmd))
@@ -183,6 +174,10 @@ def main():
     db = SonicV2Connector(use_unix_socket_path=True)
     db.connect(CFG_DB)
     db.connect(STATE_DB)
+    file_path = os.path.join(CORE_DUMP_DIR, args.name)
+    if not verify_recent_file_creation(file_path):
+        syslog.syslog(syslog.LOG_INFO, "Spurious Invocation. {} is not created within last {} sec".format(file_path, TIME_BUF))
+        return
     cls = CriticalProcCoreDumpHandle(args.name, args.container, db)
     cls.handle_core_dump_creation_event()
     handle_coredump_cleanup(args.name, db)

tests/coredump_gen_handler_test.py

@@ -267,7 +267,7 @@ def mock_cmd(cmd, env):
                 if "--since '4 days ago'" in cmd_str:
                     patcher.fs.create_file(ts_dump)
                     return 0, AUTO_TS_STDOUT + ts_dump, ""
-                elif "date --date='4 days ago'" in cmd_str:
+                elif "date --date=4 days ago" in cmd_str:
                     return 0, "", ""
                 else:
                     return 1, "", "Invalid Command"
@@ -334,7 +334,7 @@ def mock_cmd(cmd, env):
                     patcher.fs.create_file(ts_dump)
                     print(AUTO_TS_STDOUT + ts_dump)
                     return 0, AUTO_TS_STDOUT + ts_dump, ""
-                elif "date --date='whatever'" in cmd_str:
+                elif "date --date=whatever" in cmd_str:
                     return 1, "", "Invalid Date Format"
                 else:
                     return 1, "", ""