support list all agents/tracers

Change-Id: I77de64944895031db5fcf4712174b52c41d4c555

scalpels/cli/actions/agent.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python
+#-*- coding:utf-8 -*-
+# Author: Kun Huang <academicgareth@gmail.com>
+
+from scalpels.cli.actions.start import agents_map
+from prettytable import PrettyTable
+
+
+def run(config):
+    t = PrettyTable(["tracer", "tracer script"])
+    for ag in agents_map:
+        t.add_row([ag, agents_map[ag]])
+    print t

scalpels/cli/shell.py

@@ -49,6 +49,11 @@ def main():
     result.add_argument("--html", action="store_true", dest="html", help="report html to stdout instead of pretty print")
     result.add_argument("--short", action="store_true", dest="short", help="report uuid only")
 
+    # agent command
+    agent = subparsers.add_parser("agent")
+    agent.add_argument("-l", "--list", action="store_true", dest="list", help="list all agents")
+
+
     parser = rootparser.parse_args()
     try:
         run(parser)

tests/ci/scalpels-ci.sh

@@ -13,6 +13,7 @@ function debug_msg {
 }
 
 function basic_test {
+    sca agent -l
     sca start -a rpc -a rabbit -a traffic
 
     sca load --storm