From: Philippe Guibert <philippe.guibert@6wind.com>
Date: Mon, 10 Jun 2024 06:38:22 +0000 (+0200)
Subject: topotests: add API to detect if iproute2 is json capable
X-Git-Tag: base_10.2~341^2~1
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=a6b1d38d7f038c335143d963b7b7a13377ef5f22;p=matthieu%2Ffrr.git

topotests: add API to detect if iproute2 is json capable

Some tests may want to use the json facility of iproute2 to
dump some results.
Add an internal API in lib/topotest.py that tells whether iproute2
is json capable or not.

Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
---

diff --git a/tests/topotests/lib/topotest.py b/tests/topotests/lib/topotest.py
index 087d8454fc..1d4bc2eac6 100644
--- a/tests/topotests/lib/topotest.py
+++ b/tests/topotests/lib/topotest.py
@@ -602,6 +602,30 @@ def is_linux():
     return False
 
 
+def iproute2_is_json_capable():
+    """
+    Checks if the iproute2 version installed on the system is capable of
+    handling JSON outputss
+
+    Returns True if capability can be detected, returns False otherwise.
+    """
+    if is_linux():
+        try:
+            subp = subprocess.Popen(
+                ["ip", "-json", "route", "show"],
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+                stdin=subprocess.PIPE,
+            )
+            iproute2_err = subp.communicate()[1].splitlines()[0].split()[0]
+
+            if iproute2_err != "Error:":
+                return True
+        except Exception:
+            pass
+    return False
+
+
 def iproute2_is_vrf_capable():
     """
     Checks if the iproute2 version installed on the system is capable of