add log for rpc server

Change-Id: I94bf597d3da4a3876290c4a9eab9948432d98044

scalpels/agents/server.py

@@ -32,6 +32,7 @@ class TraceEndpoint(object):
         pids = []
         for tr in tracers:
             pid = run_agent(task.uuid, tr)
+            print "[LOG] saving pid %s" % pid
             pids.append(pid)
 
         task = db_api.task_update(task.uuid, pids=pids)
@@ -47,6 +48,7 @@ class TaskEndpoint(object):
         print "[LOG] stopping task: %s" % uuid
         task = db_api.task_get(uuid)
         for pid in task.pids:
+            print "[LOG] interupt process %s" % pid
             p = psutil.Process(int(pid))
             p.send_signal(signal.SIGINT)
 

scalpels/cmd/tracer.py

@@ -29,6 +29,7 @@ def read_from_ag(ag):
 def main():
     task_uuid, ag = sys.argv[1], sys.argv[2]
     cmd = read_from_ag(ag)
+    print "[LOG] running CMD: %s" % cmd
 
     worker = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE)
     out = []
@@ -40,7 +41,7 @@ def main():
             _t = (time.time(), t.strip())
             out.append(_t)
     except KeyboardInterrupt:
-        pass
+        print "[LOG] %s is interupted" % ag
 
     # psutil is much more professional... I have to use it instead
     # this kill is to script process
@@ -59,7 +60,9 @@ def main():
         results = copy(task.results)
         for ret in parse_func(out):
             ret = db_api.result_create(**ret)
+            print "[LOG] appending result with id %s" % ret.uuid
             results.append(ret.uuid)
+        print "[LOG] update tas with result %s" % task_uuid
         db_api.task_update(task_uuid, results=results)
         time.sleep(2)
     co.stop()