lfcli_base.py: attempt to improve error capture and reporting

py-json/LANforge/lfcli_base.py

@@ -4,7 +4,8 @@
 from pprint import pprint
 import LANforge.LFUtils
 from LANforge.LFUtils import *
-
+import traceback
+from traceback import extract_stack
 
 class LFCliBase:
     # do not use `super(LFCLiBase,self).__init__(self, host, port, _debugOn)
@@ -17,6 +18,10 @@ class LFCliBase:
         self.mgr_url = "http://%s:%s/" % (self.lfjson_host, self.lfjson_port)
 
     def jsonPost(self, _req_url, _data):
+        json_response = None
+        if self.mgr_url.endswith('/') and _req_url.startswith('/'):
+            _req_url = _req_url[1:]
+        try:
             lf_r = LFRequest.LFRequest(self.mgr_url + _req_url)
             _data['suppress_preexec_cli'] = True
             _data['suppress_preexec_method'] = True
@@ -24,6 +29,11 @@ class LFCliBase:
             if (self.debugOn):
                 LANforge.LFUtils.debug_printer.pprint(_data)
             json_response = lf_r.jsonPost(self.debugOn)
+        except Exception as x:
+            print(f"jsonPost posted to {_req_url}")
+            pprint(_data)
+            print(x.__traceback__)
+
         # Debugging
         # if (json_response != None):
         #   print("jsonReq: response: ")
@@ -31,8 +41,18 @@ class LFCliBase:
         return json_response
 
     def jsonGet(self, _req_url):
+        json_response = None
+        if self.mgr_url.endswith('/') and _req_url.startswith('/'):
+            _req_url = _req_url[1:]
+        try:
             lf_r = LFRequest.LFRequest(self.mgr_url + _req_url)
             json_response = lf_r.getAsJson(self.debugOn)
+            if (json_response is None) and self.debugOn:
+                raise ValueError(json_response)
+        except ValueError as ve:
+            print("jsonGet asked for "+_req_url)
+            print(ve.__traceback__)
+
         return json_response
 
     def checkConnect(self):