[hostcfgd] Convert to Python 3; Add to sonic-host-services package (#5713)

To consolidate host services and install via packages instead of file-by-file, also as part of migrating all of SONiC to Python 3, as Python 2 is no longer supported.

files/build_templates/sonic_debian_extension.j2

@@ -324,12 +324,6 @@ sudo cp files/dhcp/90-dhcp6-systcl.conf.j2 $FILESYSTEM_ROOT_USR_SHARE_SONIC_TEMP
 sudo cp $IMAGE_CONFIGS/interfaces/init_interfaces $FILESYSTEM_ROOT/etc/network/interfaces
 sudo mkdir -p $FILESYSTEM_ROOT/etc/network/interfaces.d
 
-# Copy hostcfgd files
-sudo cp $IMAGE_CONFIGS/hostcfgd/hostcfgd.service $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
-echo "hostcfgd.service" | sudo tee -a $GENERATED_SERVICE_FILE
-sudo cp $IMAGE_CONFIGS/hostcfgd/hostcfgd $FILESYSTEM_ROOT/usr/bin/
-sudo cp $IMAGE_CONFIGS/hostcfgd/*.j2 $FILESYSTEM_ROOT_USR_SHARE_SONIC_TEMPLATES/
-
 # copy core file uploader files
 sudo cp $IMAGE_CONFIGS/corefile_uploader/core_uploader.service $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
 sudo LANG=C chroot $FILESYSTEM_ROOT systemctl disable core_uploader.service

src/sonic-host-services-data/MAINTAINERS

@@ -1,4 +1,4 @@
-# This file describes the maintainers for sonic-device-data
+# This file describes the maintainers for sonic-host-services-data
 # See the SONiC project governance document for more information
 
 Name = "Joe LeVeque"

src/sonic-host-services-data/debian/install

@@ -0,0 +1 @@
+templates/*.j2    /usr/share/sonic/templates/

src/sonic-host-services-data/debian/rules

@@ -7,4 +7,5 @@ build:
 
 override_dh_installsystemd:
 	dh_installsystemd --no-start --name=caclmgrd
+	dh_installsystemd --no-start --name=hostcfgd
 	dh_installsystemd --no-start --name=procdockerstatsd

src/sonic-host-services-data/debian/sonic-host-services-data.hostcfgd.service

@@ -5,7 +5,7 @@ After=updategraph.service
 
 [Service]
 Type=simple
-ExecStart=/usr/bin/hostcfgd
+ExecStart=/usr/local/bin/hostcfgd
 
 [Install]
 WantedBy=multi-user.target

src/sonic-host-services/.gitignore

@@ -1,6 +1,7 @@
 # Compiled Python files
 *.pyc
 scripts/caclmgrdc
+scripts/hostcfgdc
 scripts/procdockerstatsdc
 
 # Generated by packaging

src/sonic-host-services/scripts/hostcfgd

@@ -1,16 +1,15 @@
-#!/usr/bin/python -u
-# -*- coding: utf-8 -*-
+#!/usr/bin/env python3
 
 import ast
+import copy
+import ipaddress
 import os
-import sys
 import subprocess
 import syslog
-import copy
+
 import jinja2
-import ipaddr as ipaddress
-from swsssdk import ConfigDBConnector
 from sonic_py_common import device_info
+from swsssdk import ConfigDBConnector
 
 # FILE
 PAM_AUTH_CONF = "/etc/pam.d/common-auth-sonic"
@@ -80,7 +79,7 @@ class Iptables(object):
 
         iface, ip = key
         ip_str = ip.split("/")[0]
-        ip_addr = ipaddress.IPAddress(ip_str)
+        ip_addr = ipaddress.ip_address(ip_str)
         if isinstance(ip_addr, ipaddress.IPv6Address):
             ver = '6'
         else:
@@ -313,7 +312,7 @@ class HostConfigDaemon:
 
     def update_all_feature_states(self):
         feature_table = self.config_db.get_table('FEATURE')
-        for feature_name in feature_table.keys():
+        for feature_name in feature_table:
             if not feature_name:
                 syslog.syslog(syslog.LOG_WARNING, "Feature is None")
                 continue
@@ -359,7 +358,7 @@ class HostConfigDaemon:
     def feature_state_handler(self, key, data):
         feature_name = key
         feature_table = self.config_db.get_table('FEATURE')
-        if feature_name not in feature_table.keys():
+        if feature_name not in feature_table:
             syslog.syslog(syslog.LOG_WARNING, "Feature '{}' not in FEATURE table".format(feature_name))
             return
 

src/sonic-host-services/setup.py

@@ -12,9 +12,11 @@ setup(
     maintainer_email = 'jolevequ@microsoft.com',
     scripts = [
         'scripts/caclmgrd',
+        'scripts/hostcfgd',
         'scripts/procdockerstatsd',
     ],
     install_requires = [
+        'Jinja2>=2.10',
         'sonic-py-common',
         'swsssdk>=2.0.1',
     ],