Add public code by Ryo Nakamura

See https://gist.github.com/upa/94f82e00dfffbb25d896

LICENSE

+MIT License
+
+Copyright (c) 2021 Ryo Nakamura
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

linux_bridge.py

+#!/usr/bin/env python
+#-*- coding: utf-8 -*-
+
+DOCUMENTATION = '''
+---
+module: linux_bridge
+short_description: Manage Linux bridges
+requirements: [ brctl ]
+description:
+    - Manage Linux bridges
+options:
+    bridge:
+        required: true
+        description:
+            - Name of bridge to manage
+    state:
+        required: false
+        default: "present"
+        choices: [ present, absent ]
+        description:
+            - Whether the bridge should exist
+'''
+
+EXAMPLES = '''
+# Create bridge a named br-int
+- linux_bridge: bridge=br-int state=present
+'''
+
+class LinuxBridge (object) :
+
+    def __init__ (self, module) :
+        self.module = module
+        self.bridge = module.params['bridge']
+        self.state = module.params['state']
+
+        return
+
+    def brctl (self, cmd) :
+
+        return self.module.run_command (['brctl'] + cmd)
+
+
+    def ifconfig (self, cmd) :
+
+        return self.module.run_command (['ifconfig'] + cmd)
+
+
+    def br_exists (self) :
+        
+        syspath = "/sys/class/net/" + self.bridge
+        if os.path.exists (syspath) :
+            return True
+        else :
+            return False
+
+        return 
+
+
+    def addbr (self) :
+        
+        (rc, out, err) = self.brctl (['addbr', self.bridge])
+
+        if rc != 0 :
+            raise Exception (err)
+
+        self.ifconfig ([self.bridge, 'up'])
+
+        return
+
+
+    def delbr (self) :
+        
+        self.ifconfig ([self.bridge, 'down'])
+
+        (rc, out, err) = self.brctl (['delbr', self.bridge])
+
+        if rc != 0 :
+            raise Exception (err)
+    
+        return
+
+
+    def check (self) :
+
+        try :
+            if self.state == 'absent' and self.br_exists () :
+                changed = True
+            elif self.state == 'present' and not self.br_exists () :
+                changed = True
+            else :
+                changed = False
+
+        except Exception, e :
+            self.module.fail_json (msg = str (e))
+
+        self.module.exit_json (changed = changed)
+
+        return
+        
+
+    def run (self) :
+
+        changed = False
+
+        try :
+            if self.state == 'absent' and self.br_exists () :
+                self.delbr ()
+                changed = True
+
+            elif self.state == 'present' and not self.br_exists () :
+                self.addbr ()
+                changed = True
+
+        except Exception, e :
+            self.module.fail_json (msg = str (e))
+
+
+        self.module.exit_json (changed = changed)
+
+        return
+            
+
+def main () :
+
+    module = AnsibleModule (
+        argument_spec = {
+            'bridge' : { 'required' : True },
+            'state' : {'default' : 'present', 
+                       'choices' : ['present', 'absent']
+                       }
+            },
+        supports_check_mode = True,
+        )
+
+    br = LinuxBridge (module)
+
+    if module.check_mode :
+        br.check ()
+    else :
+        br.run ()
+
+    return
+
+from ansible.module_utils.basic import *
+main ()