usertools: fix telemetry client with python 3

When running the dpdk-telemetry-client.py with python 3, we get the
following syntax errors:

  File "usertools/dpdk-telemetry-client.py", line 70
      print "\nResponse: \n", str(data)
                           ^
  SyntaxError: invalid syntax

  File "usertools/dpdk-telemetry-client.py", line 93
      print "\nResponse: \n", str(data)
                           ^
  SyntaxError: invalid syntax

  File "usertools/dpdk-telemetry-client.py", line 111
      file_path = sys.argv[1]
                            ^
  TabError: inconsistent use of tabs and spaces in indentation

Import print_function from __future__ and add parentheses where missing.
Also, use spaces for indentation everywhere.

Fixes: d1b94da4a4e0 ("usertools: add client script for telemetry")
Fixes: 53f293c9a783 ("usertools: replace unsafe input function")
Fixes: 4080e46c8078 ("telemetry: support global metrics")
Cc: stable@dpdk.org
Signed-off-by: Robin Jarry <robin.jarry@6wind.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/usertools/dpdk-telemetry-client.py b/usertools/dpdk-telemetry-client.py
index 60fe97a..e06d630 100755 (executable)
--- a/usertools/dpdk-telemetry-client.py
+++ b/usertools/dpdk-telemetry-client.py
@@ -2,6 +2,8 @@
 # SPDK-License-Identifier: BSD-3-Clause
 # Copyright(c) 2018 Intel Corporation
 
+from __future__ import print_function
+
 import socket
 import os
 import sys
@@ -16,9 +18,9 @@ GLOBAL_METRICS_REQ = "{\"action\":0,\"command\":\"global_stat_values\",\"data\":
 DEFAULT_FP = "/var/run/dpdk/default_client"
 
 try:
-       raw_input  # Python 2
+    raw_input  # Python 2
 except NameError:
-       raw_input = input  # Python 3
+    raw_input = input  # Python 3
 
 class Socket:
 
@@ -74,7 +76,7 @@ class Client:
     def requestMetrics(self): # Requests metrics for given client
         self.socket.client_fd.send(METRICS_REQ)
         data = self.socket.client_fd.recv(BUFFER_SIZE)
-        print "\nResponse: \n", str(data)
+        print("\nResponse: \n", str(data))
 
     def repeatedlyRequestMetrics(self, sleep_time): # Recursively requests metrics for given client
         print("\nPlease enter the number of times you'd like to continuously request Metrics:")
@@ -88,7 +90,7 @@ class Client:
     def requestGlobalMetrics(self): #Requests global metrics for given client
         self.socket.client_fd.send(GLOBAL_METRICS_REQ)
         data = self.socket.client_fd.recv(BUFFER_SIZE)
-        print "\nResponse: \n", str(data)
+        print("\nResponse: \n", str(data))
 
     def interactiveMenu(self, sleep_time): # Creates Interactive menu within the script
         while self.choice != 4:
@@ -121,10 +123,10 @@ if __name__ == "__main__":
     sleep_time = 1
     file_path = ""
     if (len(sys.argv) == 2):
-       file_path = sys.argv[1]
+        file_path = sys.argv[1]
     else:
         print("Warning - No filepath passed, using default (" + DEFAULT_FP + ").")
-       file_path = DEFAULT_FP
+        file_path = DEFAULT_FP
     client = Client()
     client.getFilepath(file_path)
     client.register()