[yang-models]: First version of yang models for Port, VLan and ACL. (#2)

* [yang-models]: First version of yang models for Port, VLan and ACL.

RB=
G=lnos-reviewers
R=pchaudhary,pmao,rmolina,samaity,sfardeen,zxu
A=

* [yangModelTesting.py]: Test code for POC.

Minor Corrections in yang model files.

* [sonic-interface.yang]: Interface yang model.

Minor changes in yang tree and other models.

* [Sonic Yang Tree]: Modified YANG models as per Guidelines.

Guideline doc: https://github.com/Azure/SONiC/blob/master/doc/mgmt/SONiC_YANG_Model_Guidelines.md

src/sonic-yang-mgmt/test_code/yangModelTesting.py

@@ -0,0 +1,67 @@
+import yang as ly
+import sonic_yang as sy
+import logging
+
+from os import listdir
+from os.path import isfile, join, splitext
+
+logging.basicConfig(level=logging.DEBUG)
+log = logging.getLogger(":")
+log.setLevel(logging.DEBUG)
+log.addHandler(logging.NullHandler())
+
+def main():
+
+ yangDir = "/sonic/src/sonic-yang-mgmt/models"
+ yangDataInst = yangDir + "/sonic_config_data.json"
+
+ # get all files
+ yangFiles = [f for f in listdir(yangDir) if isfile(join(yangDir, f))]
+ # get all yang files
+ yangFiles = [f for f in yangFiles if splitext(f)[-1].lower()==".yang"]
+ yangFiles = [f.split('.')[0] for f in yangFiles]
+
+ # load yang mdoules
+ ctx = ly.Context(yangDir)
+ for f in yangFiles:
+ # load a module m
+ m = ctx.get_module(f)
+ if m is not None:
+ log.error(m.name())
+ else:
+ m = ctx.load_module(f)
+ if m is not None:
+ log.info("module: {} is loaded successfully".format(m.name()))
+
+ try:
+ root = ctx.parse_data_path(yangDataInst, ly.LYD_JSON, ly.LYD_OPT_CONFIG | ly.LYD_OPT_STRICT)
+
+ if root:
+ log.info("Tree DFS\n")
+ p = root.print_mem(ly.LYD_JSON, ly.LYP_WITHSIBLINGS | ly.LYP_FORMAT)
+ log.info("===================Data=================")
+ log.info(p)
+
+ sYangInst = sy.sonic_yang(yangDir)
+ sYangInst.root = root
+ sYangInst.validate_data_tree(root, ctx)
+
+ xpath = "/sonic-port:PORT/PORT_LIST[port_name='Ethernet1']/port_name"
+ #find_topo_sort_dependencies(sYangInst, xpath)
+ refs = sYangInst.find_data_dependencies(xpath)
+ printList(refs)
+
+ except Exception as e:
+ print(e)
+
+
+def printList(l): # list l
+
+ print("list: ")
+ for item in l:
+ print (item)
+
+ return
+
+if __name__ == '__main__':
+ main()

src/sonic-yang-mgmt/yang-models/Sonic Yang Tree

@@ -0,0 +1,101 @@
+module: sonic-acl
+ +--rw sonic-acl
+ +--rw ACL_RULE
+ | +--rw ACL_RULE_LIST* [ACL_TABLE_NAME RULE_NAME]
+ | +--rw ACL_TABLE_NAME -> /sonic-acl/ACL_TABLE/ACL_TABLE_LIST/ACL_TABLE_NAME
+ | +--rw RULE_NAME string
+ | +--rw PACKET_ACTION? head:packet_action
+ | +--rw IP_TYPE? head:ip_type
+ | +--rw PRIORITY? uint32
+ | +--rw (ip_prefix)?
+ | | +--:(ip4_prefix)
+ | | | +--rw SRC_IP? inet:ipv4-prefix
+ | | | +--rw DST_IP? inet:ipv4-prefix
+ | | +--:(ip6_prefix)
+ | | +--rw SRC_IPV6? inet:ipv6-prefix
+ | | +--rw DST_IPV6? inet:ipv6-prefix
+ | +--rw IN_PORTS* uint16
+ | +--rw OUT_PORTS* uint16
+ | +--rw (src_port)?
+ | | +--:(l4_src_port)
+ | | | +--rw L4_SRC_PORT? uint16
+ | | +--:(l4_src_port_range)
+ | | +--rw L4_SRC_PORT_RANGE? string
+ | +--rw (dst_port)?
+ | | +--:(l4_dst_port)
+ | | | +--rw L4_DST_PORT? uint16
+ | | +--:(l4_dst_port_range)
+ | | +--rw L4_DST_PORT_RANGE? string
+ | +--rw ETHER_TYPE? string
+ | +--rw IP_PROTOCOL? uint8
+ | +--rw TCP_FLAGS? string
+ | +--rw DSCP? uint8
+ | +--rw TC? uint8
+ | +--rw (icmp)?
+ | | +--:(icmp4)
+ | | | +--rw ICMP_TYPE? uint8
+ | | | +--rw ICMP_CODE? uint8
+ | | +--:(icmp6)
+ | | +--rw ICMPV6_TYPE? uint8
+ | | +--rw ICMPV6_CODE? uint8
+ | +--rw INNER_ETHER_TYPE? string
+ | +--rw INNER_IP_PROTOCOL? uint8
+ | +--rw INNER_L4_SRC_PORT? uint16
+ | +--rw INNER_L4_DST_PORT? uint16
+ +--rw ACL_TABLE
+ +--rw ACL_TABLE_LIST* [ACL_TABLE_NAME]
+ +--rw ACL_TABLE_NAME string
+ +--rw policy_desc? string
+ +--rw type? head:acl_table_type
+ +--rw stage? enumeration
+ +--rw ports* union
+module: sonic-interface
+ +--rw sonic-interface
+ +--rw INTERFACE
+ +--rw INTERFACE_LIST* [interface ip-prefix]
+ +--rw interface -> /port:sonic-port/PORT/PORT_LIST/port_name
+ +--rw ip-prefix inet:ip-prefix
+ +--rw scope? enumeration
+ +--rw family? head:ip-family
+module: sonic-port
+ +--rw sonic-port
+ +--rw PORT
+ +--rw PORT_LIST* [port_name]
+ +--rw port_name string
+ +--rw alias? string
+ +--rw lanes? string
+ +--rw description? string
+ +--rw speed? uint32
+ +--rw mtu? uint16
+ +--rw admin_status head:admin_status
+module: sonic-portchannel
+ +--rw sonic-portchannel
+ +--rw PORTCHANNEL
+ +--rw PORTCHANNEL_LIST* [portchannel_name]
+ +--rw portchannel_name string
+ +--rw members* -> /port:sonic-port/PORT/PORT_LIST/port_name
+ +--rw min_links? uint8
+ +--rw description? string
+ +--rw mtu? uint16
+ +--rw admin_status head:admin_status
+module: sonic-vlan
+ +--rw sonic-vlan
+ +--rw VLAN_INTERFACE
+ | +--rw VLAN_INTERFACE_LIST* [vlanid ip-prefix]
+ | +--rw vlanid -> ../../../VLAN/VLAN_LIST/vlanid
+ | +--rw ip-prefix inet:ip-prefix
+ | +--rw scope? enumeration
+ | +--rw family? head:ip-family
+ +--rw VLAN
+ | +--rw VLAN_LIST* [vlanid]
+ | +--rw vlanid uint16
+ | +--rw description? string
+ | +--rw dhcp_servers* inet:ip-address
+ | +--rw mtu? uint16
+ | +--rw admin_status head:admin_status
+ | +--rw members* -> /port:sonic-port/PORT/PORT_LIST/port_name
+ +--rw VLAN_MEMBER
+ +--rw VLAN_MEMBER_LIST* [vlanid port]
+ +--rw vlanid -> ../../../VLAN/VLAN_LIST/vlanid
+ +--rw port -> /port:sonic-port/PORT/PORT_LIST/port_name
+ +--rw tagging_mode head:vlan_tagging_mode