[syseeprom] Add a new daemon to populate syseeprom info to state DB

sonic-post-syseeprom/scripts/post-syseeprom

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+#!/usr/bin/env python2
+
+'''
+    post-syseeprom
+    Syseeprom information gathering tool for SONiC
+    This tool will be started during the start phase of pmon container, gathering syseeprom info and write to state DB.
+    It's an one-shot task since syseeprom info are static.
+    With this tool, show syseeprom CLI will be able to get data from state DB instead of access hw or cache.
+'''
+
+try:
+    from sonic_daemon_base.daemon_base import DaemonBase
+    import argparse
+    from swsscommon import swsscommon
+    from sonic_daemon_base import daemon_base
+    from sonic_daemon_base.daemon_base import Logger
+    from sonic_daemon_base.daemon_base import DaemonBase
+except ImportError, e:
+    raise ImportError (str(e) + " - required module not found")
+
+PLATFORM_SPECIFIC_MODULE_NAME = 'eeprom'
+PLATFORM_SPECIFIC_CLASS_NAME = 'board'
+EEPROM_TABLE_NAME = 'EEPROM_INFO'
+
+ERR_ARISTA_PLATFORM = 1
+ERR_FAILED_EEPROM = 2
+ERR_FAILED_UPDATE_DB = 3
+
+SYSLOG_IDENTIFIER = "post-syseeprom"
+
+# Global logger class instance
+logger = Logger(SYSLOG_IDENTIFIER)
+
+class PostSyseeprom(DaemonBase):
+    def __init__(self):
+        DaemonBase.__init__(self)
+
+    def _is_arista_platform(self):
+        (platform_path, hwsku_path) = self.get_path_to_platform_and_hwsku()
+
+        return 'arista' in platform_path
+
+    def write_info_to_db(self):
+        if self._is_arista_platform():
+            # Arista platform have their own implementation for eeprom tlv parsing, it's not inherited from eeprom base class.
+            # So for now this tool can not support Arista platform, but this will not cause any issue on them. 
+            # decode-syseeprom scripts will cover Arista case, it will still read from HW/cache instead from DB on Arista platform.  
+            logger.log_warning('Arista platform does not support this yet')
+            return ERR_ARISTA_PLATFORM
+
+        eeprom_util = self.load_platform_util(PLATFORM_SPECIFIC_MODULE_NAME, PLATFORM_SPECIFIC_CLASS_NAME)
+        eeprom = eeprom_util.read_eeprom()
+        if eeprom is None :
+            logger.log_error('Failed to read eeprom')
+            return ERR_FAILED_EEPROM
+
+        err = eeprom_util.update_eeprom_db(eeprom)
+        if err:
+            logger.log_error('Failed to update eeprom info to database')
+            return ERR_FAILED_UPDATE_DB
+
+    def clear_db(self):
+        # Same case as in above write_info_to_db() function, Arista platform not supported here.
+        if self._is_arista_platform():
+            logger.log_warning('Arista platform does not support this yet')
+            return ERR_ARISTA_PLATFORM
+
+        state_db = daemon_base.db_connect(swsscommon.STATE_DB)
+        eeprom_tbl = swsscommon.Table(state_db, EEPROM_TABLE_NAME)
+        keys = eeprom_tbl.getKeys()
+        for key in keys:
+            eeprom_tbl._del(key)
+
+
+def main():
+    parser = argparse.ArgumentParser(description='post-syseeprom tool')
+    parser.add_argument("-w", help="write syseeprom info into state DB", action='store_true')
+    parser.add_argument("-c", help="remove syseeprom info from state DB", action='store_true')
+    args = parser.parse_args()
+
+    post_syseeprom = PostSyseeprom()
+    if args.w:
+        post_syseeprom.write_info_to_db()
+    elif args.c:
+        post_syseeprom.clear_db()
+    else:
+        logger.log_error("Invalid parameter")
+
+if __name__ == '__main__':
+    main()

sonic-post-syseeprom/setup.py

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+from setuptools import setup
+
+setup(
+    name='sonic-post-syseeprom',
+    version='1.0',
+    description='Tool which posts syseeprom to DB in SONiC',
+    license='Apache 2.0',
+    author='SONiC Team',
+    author_email='linuxnetdev@microsoft.com',
+    url='https://github.com/Azure/sonic-platform-daemons',
+    maintainer='Kebo Liu',
+    maintainer_email='kebol@mellanox.com',
+    scripts=[
+        'scripts/post-syseeprom',
+    ],
+    classifiers=[
+        'Development Status :: 4 - Beta',
+        'Environment :: No Input/Output (Daemon)',
+        'Intended Audience :: Developers',
+        'Intended Audience :: Information Technology',
+        'Intended Audience :: System Administrators',
+        'License :: OSI Approved :: Apache Software License',
+        'Natural Language :: English',
+        'Operating System :: POSIX :: Linux',
+        'Programming Language :: Python :: 2.7',
+        'Topic :: System :: Hardware',
+    ],
+    keywords='sonic SONiC SYSEEPROM syseeprom POST-SYSEEPROM post-syseeprom',
+)