Enhancement of 'show' commands and addition of 'debug', and 'undebug'… (

sonic-net#113)

- added script to get interface status.
- added few subcommands under "show interfaces" command.
- enhanced "show process" to get all processes sorted by CPU & memory.
- added "show services" command to get all the running process from all the dockers.
- added "show vlan" command.
- enhanced multiple subcommands under
- added debug', and 'undebug' CLI utilities.

data/etc/bash_completion.d/debug

@@ -0,0 +1,8 @@
+_debug_completion() {
+    COMPREPLY=( $( env COMP_WORDS="${COMP_WORDS[*]}" \
+                   COMP_CWORD=$COMP_CWORD \
+                   _DEBUG_COMPLETE=complete $1 ) )
+    return 0
+}
+
+complete -F _debug_completion -o default debug;

data/etc/bash_completion.d/undebug

@@ -0,0 +1,8 @@
+_undebug_completion() {
+    COMPREPLY=( $( env COMP_WORDS="${COMP_WORDS[*]}" \
+                   COMP_CWORD=$COMP_CWORD \
+                   _UNDEBUG_COMPLETE=complete $1 ) )
+    return 0
+}
+
+complete -F _undebug_completion -o default undebug;

debug/aliases.ini

@@ -0,0 +1,5 @@
+[aliases]
+running-configuration=runningconfiguration
+running-config=runningconfiguration
+startup-configuration=startupconfiguration
+startup-config=startupconfiguration

debug/main.py

@@ -0,0 +1,132 @@
+#! /usr/bin/python -u
+# date: 07/12/17
+
+import click
+import os
+import subprocess
+from click_default_group import DefaultGroup
+
+try:
+    import ConfigParser as configparser
+except ImportError:
+    import configparser
+
+
+# This is from the aliases example:
+# https://github.com/pallets/click/blob/57c6f09611fc47ca80db0bd010f05998b3c0aa95/examples/aliases/aliases.py
+class Config(object):
+    """Object to hold CLI config"""
+
+    def __init__(self):
+        self.path = os.getcwd()
+        self.aliases = {}
+
+    def read_config(self, filename):
+        parser = configparser.RawConfigParser()
+        parser.read([filename])
+        try:
+            self.aliases.update(parser.items('aliases'))
+        except configparser.NoSectionError:
+            pass
+
+
+# Global Config object
+_config = None
+
+
+# This aliased group has been modified from click examples to inherit from DefaultGroup instead of click.Group.
+# DefaultFroup is a superclass of click.Group which calls a default subcommand instead of showing
+# a help message if no subcommand is passed
+class AliasedGroup(DefaultGroup):
+    """This subclass of a DefaultGroup supports looking up aliases in a config
+    file and with a bit of magic.
+    """
+
+    def get_command(self, ctx, cmd_name):
+        global _config
+
+        # If we haven't instantiated our global config, do it now and load current config
+        if _config is None:
+            _config = Config()
+
+            # Load our config file
+            cfg_file = os.path.join(os.path.dirname(__file__), 'aliases.ini')
+            _config.read_config(cfg_file)
+
+        # Try to get builtin commands as normal
+        rv = click.Group.get_command(self, ctx, cmd_name)
+        if rv is not None:
+            return rv
+
+        # No builtin found. Look up an explicit command alias in the config
+        if cmd_name in _config.aliases:
+            actual_cmd = _config.aliases[cmd_name]
+            return click.Group.get_command(self, ctx, actual_cmd)
+
+        # Alternative option: if we did not find an explicit alias we
+        # allow automatic abbreviation of the command.  "status" for
+        # instance will match "st".  We only allow that however if
+        # there is only one command.
+        matches = [x for x in self.list_commands(ctx)
+                   if x.lower().startswith(cmd_name.lower())]
+        if not matches:
+            # No command name matched. Issue Default command.
+            ctx.arg0 = cmd_name
+            cmd_name = self.default_cmd_name
+            return DefaultGroup.get_command(self, ctx, cmd_name)
+        elif len(matches) == 1:
+            return DefaultGroup.get_command(self, ctx, matches[0])
+        ctx.fail('Too many matches: %s' % ', '.join(sorted(matches)))
+
+
+def run_command(command, pager=False):
+    if pager is True:
+        click.echo(click.style("Command: ", fg='cyan') + click.style(command, fg='green'))
+        p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
+        click.echo_via_pager(p.stdout.read())
+    else:
+        click.echo(click.style("Command: ", fg='cyan') + click.style(command, fg='green'))
+        p = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE)
+        click.echo(p.stdout.read())
+
+
+CONTEXT_SETTINGS = dict(help_option_names=['-h', '--help', '-?'])
+
+
+#
+# 'cli' group (root group) ###
+#
+
+@click.group(cls=AliasedGroup, context_settings=CONTEXT_SETTINGS)
+def cli():
+    """SONiC command line - 'debug' command"""
+    pass
+
+#
+# 'bgp' group ###
+#
+
+@cli.group(cls=AliasedGroup, default_if_no_args=True)
+def bgp():
+    """debug bgp on """
+    pass
+
+@bgp.command(default=True)
+def default():
+    command = 'sudo vtysh -c "debug bgp"'
+    run_command(command)
+
+@bgp.command()
+def events():
+    """debug bgp events on """
+    command = 'sudo vtysh -c "debug bgp events"'
+    run_command(command)
+
+@bgp.command()
+def updates():
+    """debug bgp events on """
+    command = 'sudo vtysh -c "debug bgp updates"'
+    run_command(command)
+
+if __name__ == '__main__':
+    cli()

scripts/interface_stat

@@ -0,0 +1,54 @@
+#!/usr/bin/env python
+import swsssdk
+import sys
+import re
+from tabulate import tabulate
+header = ['Iface', 'LANES', 'ALIAS', 'OPER', 'ADMIN', 'MTU']
+
+
+PORT_STATUS_TABLE_PREFIX = "PORT_TABLE:"
+PORT_LANES_STATUS_FIELD = "lanes"
+PORT_ALIAS_STATUS_FIELD = "alias"
+PORT_OPER_STATUS_FIELD = "oper_status"
+PORT_ADMIN_STATUS_FIELD = "admin_status"
+PORT_MTU_STATUS_FIELD = "mtu"
+
+class Intstat(object):
+    table = []
+
+    def get_port_status(self, port_name, status_type):
+        """
+            Get the port status
+        """
+        full_table_id = PORT_STATUS_TABLE_PREFIX + port_name
+        status = self.db.get(self.db.APPL_DB, full_table_id, status_type)
+        if status is None:
+             return "N/A"
+        else:
+            return status
+
+    def __init__(self):
+        self.db = swsssdk.SonicV2Connector(host='127.0.0.1')
+        self.db.connect(self.db.APPL_DB)
+        a = self.db.keys(self.db.APPL_DB)
+        #print(a)
+        tables = self.db.keys(self.db.APPL_DB, "PORT_TABLE:*")
+        i = {}
+        table = []
+        key = []
+        #print tabulate(header, tablefmt='simple', stralign='right')
+        for i in tables:
+            key = re.split(':', i, maxsplit=1)[-1].strip()
+            if key:
+                table.append((key, self.get_port_status(key, PORT_LANES_STATUS_FIELD), self.get_port_status(key, PORT_ALIAS_STATUS_FIELD), self.get_port_status(key, PORT_OPER_STATUS_FIELD), self.get_port_status(key, PORT_ADMIN_STATUS_FIELD), self.get_port_status(key, PORT_MTU_STATUS_FIELD)))
+        print tabulate(table, header, tablefmt="simple", stralign='right')
+
+
+def main():
+    interface_stat = Intstat()
+
+    # Now decide what information to display
+    sys.exit(0)
+
+if __name__ == "__main__":
+    main()