[spp] [PATCH 05/10] controller: move mirror help msg to SppMirror

[yasufum.o@gmail.com]

From: Yasufumi Ogawa <yasufum.o@gmail.com>

This patch is to move comment of `do_mirror` to `SppMirror.help` to
reduce the number of lines.

Signed-off-by: Yasufumi Ogawa <yasufum.o@gmail.com>
---
 src/controller/commands/mirror.py | 36 +++++++++++++++++++++++++++++++
 src/controller/shell.py           | 36 +++++--------------------------
 2 files changed, 41 insertions(+), 31 deletions(-)

diff --git a/src/controller/commands/mirror.py b/src/controller/commands/mirror.py
index d38812d..d7ea4cd 100644
--- a/src/controller/commands/mirror.py
+++ b/src/controller/commands/mirror.py
@@ -356,3 +356,39 @@ class SppMirror(object):
                         if kw.startswith(sub_tokens[4]):
                             res.append(kw)
             return res
+
+    @classmethod
+    def help(cls):
+        msg = """Send a command to spp_mirror.
+
+        spp_mirror is a secondary process for duplicating incoming
+        packets to be used as similar to TaaS in OpenStack. This
+        command has four sub commands.
+          * status
+          * component
+          * port
+
+        Each of sub commands other than 'status' takes several parameters
+        for detailed operations. Notice that 'start' for launching a worker
+        is replaced with 'stop' for terminating. 'add' is also replaced with
+        'del' for deleting.
+
+        Examples:
+
+        # (1) show status of worker threads and resources
+        spp > mirror 1; status
+
+        # (2) launch or terminate a worker thread with arbitrary name
+        #   NAME: arbitrary name used as identifier
+        #   CORE_ID: one of unused cores referred from status
+        spp > mirror 1; component start NAME CORE_ID mirror
+        spp > mirror 1; component stop NAME CORE_ID mirror
+
+        # (3) add or delete a port to worker of NAME
+        #   RES_UID: resource UID such as 'ring:0' or 'vhost:1'
+        #   DIR: 'rx' or 'tx'
+        spp > mirror 1; port add RES_UID DIR NAME
+        spp > mirror 1; port del RES_UID DIR NAME
+        """
+
+        print(msg)
diff --git a/src/controller/shell.py b/src/controller/shell.py
index b11dac0..2682376 100644
--- a/src/controller/shell.py
+++ b/src/controller/shell.py
@@ -418,37 +418,7 @@ class Shell(cmd.Cmd, object):
                         self.get_sec_ids('vf'), text, line, begidx, endidx)
 
     def do_mirror(self, cmd):
-        """Send a command to spp_mirror.
-
-        spp_mirror is a secondary process for duplicating incoming
-        packets to be used as similar to TaaS in OpenStack. This
-        command has four sub commands.
-          * status
-          * component
-          * port
-
-        Each of sub commands other than 'status' takes several parameters
-        for detailed operations. Notice that 'start' for launching a worker
-        is replaced with 'stop' for terminating. 'add' is also replaced with
-        'del' for deleting.
-
-        Examples:
-
-        # (1) show status of worker threads and resources
-        spp > mirror 1; status
-
-        # (2) launch or terminate a worker thread with arbitrary name
-        #   NAME: arbitrary name used as identifier
-        #   CORE_ID: one of unused cores referred from status
-        spp > mirror 1; component start NAME CORE_ID mirror
-        spp > mirror 1; component stop NAME CORE_ID mirror
-
-        # (3) add or delete a port to worker of NAME
-        #   RES_UID: resource UID such as 'ring:0' or 'vhost:1'
-        #   DIR: 'rx' or 'tx'
-        spp > mirror 1; port add RES_UID DIR NAME
-        spp > mirror 1; port del RES_UID DIR NAME
-        """
+        """Send a command to spp_mirror."""
 
         # remove unwanted spaces to avoid invalid command error
         tmparg = self.clean_cmd(cmd)
@@ -461,6 +431,10 @@ class Shell(cmd.Cmd, object):
         else:
             print('Invalid command: %s' % tmparg)
 
+    def help_mirror(self):
+        """Print help message of mirror command."""
+        mirror.SppMirror.help()
+
     def complete_mirror(self, text, line, begidx, endidx):
         """Completion for mirror command."""
 
-- 
2.17.1