[CLI][show][platform] Added ASIC count in the output. (#1185)

* [CLI][show][platform] Added ASIC count in the output. Also added option for JSON output.

show/main.py

@@ -19,11 +19,11 @@
 import vlan
 import system_health
 
-from sonic_py_common import device_info
+from sonic_py_common import device_info, multi_asic
 from swsssdk import ConfigDBConnector, SonicV2Connector
 from tabulate import tabulate
 from utilities_common.db import Db
-import utilities_common.multi_asic as  multi_asic_util
+import utilities_common.multi_asic as multi_asic_util
 
 
 # Global Variables
@@ -991,6 +991,7 @@ def get_hw_info_dict():
     hw_info_dict['platform'] = device_info.get_platform()
     hw_info_dict['hwsku'] = device_info.get_hwsku()
     hw_info_dict['asic_type'] = version_info['asic_type']
+    hw_info_dict['asic_count'] = multi_asic.get_num_asics()
 
     return hw_info_dict
 
@@ -1005,12 +1006,18 @@ def platform():
 
 # 'summary' subcommand ("show platform summary")
 @platform.command()
-def summary():
+@click.option('--json', is_flag=True, help="JSON output")
+def summary(json):
     """Show hardware platform information"""
+
     hw_info_dict = get_hw_info_dict()
-    click.echo("Platform: {}".format(hw_info_dict['platform']))
-    click.echo("HwSKU: {}".format(hw_info_dict['hwsku']))
-    click.echo("ASIC: {}".format(hw_info_dict['asic_type']))
+    if json:
+        click.echo(clicommon.json_dump(hw_info_dict))
+    else:
+        click.echo("Platform: {}".format(hw_info_dict['platform']))
+        click.echo("HwSKU: {}".format(hw_info_dict['hwsku']))
+        click.echo("ASIC: {}".format(hw_info_dict['asic_type']))
+        click.echo("ASIC Count: {}".format(hw_info_dict['asic_count']))
 
 # 'syseeprom' subcommand ("show platform syseeprom")
 @platform.command()

utilities_common/cli.py

@@ -1,10 +1,12 @@
 import os
 import re
-import sys
-import netaddr
 import subprocess
+import sys
 
 import click
+import json
+import netaddr
+
 from natsort import natsorted
 
 from utilities_common.db import Db
@@ -126,7 +128,7 @@ def __init__(self, db=None):
             self.config_db = db.cfgdb
             self.port_dict = self.config_db.get_table('PORT')
         self.alias_max_length = 0
-        
+
 
         if not self.port_dict:
             click.echo(message="Warning: failed to retrieve PORT table from ConfigDB!", err=True)
@@ -509,3 +511,12 @@ def do_exit(msg):
     m = "FATAL failure: {}. Exiting...".format(msg)
     _log_msg(syslog.LOG_ERR, True, inspect.stack()[1][1], inspect.stack()[1][2], m)
     raise SystemExit(m)
+
+
+def json_dump(data):
+    """
+    Dump data in JSON format
+    """
+    return json.dumps(
+        data, sort_keys=True, indent=2, ensure_ascii=False
+    )