[spp] [PATCH 2/2] controller: add mirror command to SPP controller

[ogawa.yasufumi@lab.ntt.co.jp]

From: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>

This update is to 'mirror' command to Shell class for managing
spp_mirror from 'spp.py'. Spp_mirror might have several instances, and
deciding which of ones is also similar to other secondary processes.
'mirror' command consists of an indicator and actual command. Here is
an example.

  spp > mirror 3; component start mr1 5 mirror

In this example, the indicator 'mirror 3;' is before the command
'component start ...'. The number in indicator is a secondary ID
actually, so you cannot assign the same ID of others.

You can refer the usage of 'mirror' command with 'help' command.

  spp > help mirror

Signed-off-by: Yasufumi Ogawa <ogawa.yasufumi@lab.ntt.co.jp>
---
 src/controller/shell.py | 100 ++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 93 insertions(+), 7 deletions(-)

diff --git a/src/controller/shell.py b/src/controller/shell.py
index 529d61e..84d4e2f 100644
--- a/src/controller/shell.py
+++ b/src/controller/shell.py
@@ -9,6 +9,7 @@ from .commands import pri
 from .commands import sec
 from .commands import topo
 from .commands import vf
+from .commands import mirror
 import os
 import re
 import readline
@@ -47,6 +48,11 @@ class Shell(cmd.Cmd, object):
         for sec_id in self.get_sec_ids('vf'):
             self.spp_vfs[sec_id] = vf.SppVf(self.spp_ctl_cli, sec_id)
 
+        self.spp_mirrors = {}
+        for sec_id in self.get_sec_ids('mirror'):
+            self.spp_mirrors[sec_id] = mirror.SppMirror(
+                    self.spp_ctl_cli, sec_id)
+
         self.spp_topo = topo.SppTopo(self.spp_ctl_cli, {}, self.topo_size)
         self.spp_bye = bye.SppBye(self.spp_ctl_cli, self.spp_primary,
                                   self.spp_secondary)
@@ -75,7 +81,7 @@ class Shell(cmd.Cmd, object):
     def get_sec_ids(self, ptype):
         """Return a list of IDs of running secondary processes.
 
-        'ptype' is 'nfv' or 'vf'.
+        'ptype' is 'nfv', 'vf' or 'mirror'.
         """
 
         ids = []
@@ -115,12 +121,14 @@ class Shell(cmd.Cmd, object):
                 pri_obj = None
                 sec_obj = {}
                 sec_obj['nfv'] = []
+                sec_obj['vf'] = []
+                sec_obj['mirror'] = []
 
                 for proc_obj in proc_objs:
                     if proc_obj['type'] == 'primary':
                         pri_obj = proc_obj
-                    elif proc_obj['type'] == 'nfv':
-                        sec_obj['nfv'].append(proc_obj)
+                    else:
+                        sec_obj[proc_obj['type']].append(proc_obj)
 
                 print('- primary:')
                 if pri_obj is not None:
@@ -130,9 +138,11 @@ class Shell(cmd.Cmd, object):
 
                 print('- secondary:')
                 print('  - processes:')
-                for obj in sec_obj['nfv']:
-                    print('    %d: %s:%s' % (
-                        obj['client-id'], obj['type'], obj['client-id']))
+                cnt = 1
+                for pt in ['nfv', 'vf', 'mirror']:
+                    for obj in sec_obj[pt]:
+                        print('    %d: %s:%s' % (cnt, obj['type'], obj['client-id']))
+                        cnt += 1
             elif res.status_code in self.spp_ctl_cli.rest_common_error_codes:
                 pass
             else:
@@ -345,7 +355,6 @@ class Shell(cmd.Cmd, object):
         """
 
         # remove unwanted spaces to avoid invalid command error
-        # TODO change self.spp_vf to self.spp_vfs
         tmparg = self.clean_cmd(cmd)
         cmds = tmparg.split(';')
         if len(cmds) < 2:
@@ -388,6 +397,83 @@ class Shell(cmd.Cmd, object):
                 return self.spp_vfs[idx].complete(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
+        """
+
+        # remove unwanted spaces to avoid invalid command error
+        tmparg = self.clean_cmd(cmd)
+        cmds = tmparg.split(';')
+        if len(cmds) < 2:
+            print("Required an ID and ';' before the command.")
+        elif str.isdigit(cmds[0]):
+            self.spp_mirrors[int(cmds[0])].run(cmds[1])
+        else:
+            print('Invalid command: %s' % tmparg)
+
+    def complete_mirror(self, text, line, begidx, endidx):
+        """Completion for mirror command"""
+
+        line = self.clean_cmd(line)
+
+        tokens = line.split(';')
+        if len(tokens) == 1:
+            # Add SppMirror of sec_id if it is not exist
+            sec_ids = self.get_sec_ids('mirror')
+            for idx in sec_ids:
+                if self.spp_mirrors[idx] is None:
+                    self.spp_mirrors[idx] = mirror.SppMirror(self.spp_ctl_cli, idx)
+
+            if len(line.split()) == 1:
+                res = [str(i)+';' for i in sec_ids]
+            else:
+                if not (';' in line):
+                    res = [str(i)+';'
+                           for i in sec_ids
+                           if (str(i)+';').startswith(text)]
+            return res
+        elif len(tokens) == 2:
+            # Split tokens like as from 'mirror 1' to ['mirror', '1']
+            first_tokens = tokens[0].split(' ')
+            if len(first_tokens) == 2:
+                idx = int(first_tokens[1])
+
+                # Add SppMirror of sec_id if it is not exist
+                if self.spp_mirrors[idx] is None:
+                    self.spp_mirrors[idx] = mirror.SppMirror(self.spp_ctl_cli, idx)
+
+                return self.spp_mirrors[idx].complete(
+                        self.get_sec_ids('mirror'), text, line, begidx, endidx)
+
     def do_record(self, fname):
         """Save commands as a recipe file.
 
-- 
2.7.4