[sonic-yang]: introduce yang template for cvl yang (sonic-net#8880)

Signed-off-by: Guohan Lu <[email protected]>

src/sonic-yang-models/setup.py

@@ -1,9 +1,44 @@
+import shutil
+import os
+import glob
+import jinja2
 from setuptools import setup, find_packages
+from setuptools.command.build_py import build_py
 
 # read me
 with open('README.rst') as readme_file:
     readme = readme_file.read()
 
+class my_build_py(build_py):
+    def run(self):
+        if not self.dry_run:
+            print("hehe")
+
+        if not os.path.exists("./yang-models"):
+            os.makedirs("./yang-models")
+
+        if not os.path.exists("./cvlyang-models"):
+            os.makedirs("./cvlyang-models")
+
+        # copy non-template yang model to internal yang model directory
+        for fname in glob.glob("./yang-models/*.yang"):
+            bfname = os.path.basename(fname)
+            shutil.copyfile("./yang-models/{}".format(bfname), "./cvlyang-models/{}".format(bfname))
+
+        # templated yang models
+        env = jinja2.Environment(loader=jinja2.FileSystemLoader('./yang-templates/'), trim_blocks=True)
+        for fname in glob.glob("./yang-templates/*.yang.j2"):
+            bfname = os.path.basename(fname)
+            template = env.get_template(bfname)
+            yang_model = template.render(yang_model_type="py")
+            cvlyang_model = template.render(yang_model_type="cvl")
+            with open("./yang-models/{}".format(bfname.strip(".j2")), 'w') as f:
+                f.write(yang_model)
+            with open("./cvlyang-models/{}".format(bfname.strip(".j2")), 'w') as f:
+                f.write(cvlyang_model)
+
+        build_py.run(self)
+
 setup(
     author="lnos-coders",
     author_email='[email protected]',
@@ -40,6 +75,7 @@
     py_modules=[],
     packages=find_packages(),
     version='1.0',
+    cmdclass={'build_py': my_build_py},
     data_files=[
         ('yang-models', ['./yang-models/sonic-acl.yang',
                          './yang-models/sonic-bgp-common.yang',
@@ -87,6 +123,51 @@
                          './yang-models/sonic-pfc-priority-queue-map.yang',
                          './yang-models/sonic-pfc-priority-priority-group-map.yang',
                          './yang-models/sonic-port-qos-map.yang']),
+        ('cvlyang-models', ['./cvlyang-models/sonic-acl.yang',
+                         './cvlyang-models/sonic-bgp-common.yang',
+                         './cvlyang-models/sonic-bgp-global.yang',
+                         './cvlyang-models/sonic-bgp-neighbor.yang',
+                         './cvlyang-models/sonic-bgp-peergroup.yang',
+                         './cvlyang-models/sonic-breakout_cfg.yang',
+                         './cvlyang-models/sonic-copp.yang',
+                         './cvlyang-models/sonic-crm.yang',
+                         './cvlyang-models/sonic-device_metadata.yang',
+                         './cvlyang-models/sonic-device_neighbor.yang',
+                         './cvlyang-models/sonic-extension.yang',
+                         './cvlyang-models/sonic-flex_counter.yang',
+                         './cvlyang-models/sonic-feature.yang',
+                         './cvlyang-models/sonic-interface.yang',
+                         './cvlyang-models/sonic-loopback-interface.yang',
+                         './cvlyang-models/sonic-mgmt_interface.yang',
+                         './cvlyang-models/sonic-mgmt_port.yang',
+                         './cvlyang-models/sonic-mgmt_vrf.yang',
+                         './cvlyang-models/sonic-ntp.yang',
+                         './cvlyang-models/sonic-nat.yang',
+                         './cvlyang-models/sonic-port.yang',
+                         './cvlyang-models/sonic-portchannel.yang',
+                         './cvlyang-models/sonic-pfcwd.yang',
+                         './cvlyang-models/sonic-route-common.yang',
+                         './cvlyang-models/sonic-route-map.yang',
+                         './cvlyang-models/sonic-routing-policy-sets.yang',
+                         './cvlyang-models/sonic-sflow.yang',
+                         './cvlyang-models/sonic-system-aaa.yang',
+                         './cvlyang-models/sonic-system-tacacs.yang',
+                         './cvlyang-models/sonic-types.yang',
+                         './cvlyang-models/sonic-versions.yang',
+                         './cvlyang-models/sonic-vlan.yang',
+                         './cvlyang-models/sonic-vrf.yang',
+                         './cvlyang-models/sonic-warm-restart.yang',
+                         './cvlyang-models/sonic-lldp.yang',
+                         './cvlyang-models/sonic-scheduler.yang',
+                         './cvlyang-models/sonic-wred-profile.yang',
+                         './cvlyang-models/sonic-queue.yang',
+                         './cvlyang-models/sonic-dscp-tc-map.yang',
+                         './cvlyang-models/sonic-dot1p-tc-map.yang',
+                         './cvlyang-models/sonic-tc-priority-group-map.yang',
+                         './cvlyang-models/sonic-tc-queue-map.yang',
+                         './cvlyang-models/sonic-pfc-priority-queue-map.yang',
+                         './cvlyang-models/sonic-pfc-priority-priority-group-map.yang',
+                         './cvlyang-models/sonic-port-qos-map.yang']),
     ],
     zip_safe=False,
 )

src/sonic-yang-models/yang-models/sonic-acl.yang → src/sonic-yang-models/yang-templates/sonic-acl.yang.j2

@@ -1,3 +1,8 @@
+{% if yang_model_type == "cvl" %}
+/* this is sonic cvl yang model */
+{% else %}
+/* this is sonic py yang model */
+{% endif %}
 module sonic-acl {
 
 	yang-version 1.1;