usertools/telemetry: use argparse to get script arguments

The telemetry client script uses argparse module to get input parameter.
argparse uses an optional positional arguments for local socket path to
keep backward compatibility.

Signed-off-by: Huisong Li <[email protected]>
Acked-by: Bruce Richardson <[email protected]>

1 files changed, 7 insertions, 7 deletions

diff --git a/usertools/dpdk-telemetry-client.py b/usertools/dpdk-telemetry-client.py
index df41d04fbe..144a8fb5e0 100755
--- a/usertools/dpdk-telemetry-client.py
+++ b/usertools/dpdk-telemetry-client.py
@@ -6,6 +6,7 @@ import socket
 import os
 import sys
 import time
+import argparse
 
 BUFFER_SIZE = 200000
 
@@ -115,13 +116,12 @@ class Client:
 if __name__ == "__main__":
 
     sleep_time = 1
-    file_path = ""
-    if len(sys.argv) == 2:
-        file_path = sys.argv[1]
-    else:
-        print("Warning - No filepath passed, using default (" + DEFAULT_FP + ").")
-        file_path = DEFAULT_FP
+    parser = argparse.ArgumentParser()
+    parser.add_argument('sock_path', nargs='?', default=DEFAULT_FP,
+                        help='Provide socket file path connected by legacy client')
+    args = parser.parse_args()
+
     client = Client()
-    client.getFilepath(file_path)
+    client.getFilepath(args.sock_path)
     client.register()
     client.interactiveMenu(sleep_time)