add new features to ios shared module

* add load_config() for loading a set of configuration commands
* add load_candidate() function for loading a candidate config
* updates shared module to provide NetworKModule instead of get_module
* fixes Cli transport implementation for 2.2 refactor
* updates ios documentation fragments with new options

lib/ansible/module_utils/ios.py

@@ -17,6 +17,7 @@
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
 #
 
+import urlparse
 import re
 
 from ansible.module_utils.basic import json, get_exception
@@ -26,9 +27,6 @@ from ansible.module_utils.network import add_argument, register_transport, to_li
 from ansible.module_utils.netcfg import NetworkConfig
 from ansible.module_utils.urls import fetch_url, url_argument_spec
 
-# temporary fix until modules are update.  to be removed before 2.2 final
-from ansible.module_utils.network import get_module
-
 add_argument('use_ssl', dict(default=True, type='bool'))
 add_argument('validate_certs', dict(default=True, type='bool'))
 
@@ -41,12 +39,113 @@ def argument_spec():
 ios_argument_spec = argument_spec()
 
 def get_config(module, include_defaults=False):
-    config = module.params['running_config']
-    if not config and not include_defaults:
-        config = module.config.get_config()
+    contents = module.params['running_config']
+    if not contents:
+        if not include_defaults:
+            contents = module.config.get_config()
+        else:
+            contents = module.cli('show running-config all')[0]
+        module.params['running_config'] = contents
+    return NetworkConfig(indent=1, contents=contents)
+
+def load_candidate(module, candidate, nodiff=False):
+    if nodiff:
+        updates = str(candidate)
     else:
-        config = module.cli('show running-config all')[0]
-    return NetworkConfig(indent=1, contents=config)
+        config = get_config(module)
+        updates = candidate.difference(config)
+
+    result = dict(changed=False, saved=False)
+
+    if updates:
+        if not module.check_mode:
+            module.config(updates)
+        result['changed'] = True
+
+    if not module.check_mode and module.params['save_config'] is True:
+        module.config.save_config()
+        result['saved'] = True
+
+    result['updates'] = updates
+    return result
+
+def load_config(module, commands, nodiff=False):
+    contents = '\n'.join(to_list(commands))
+    candidate = NetworkConfig(contents=contents, indent=1)
+    return load_candidate(module, candidate, nodiff)
+
+
+class Cli(NetCli):
+
+    NET_PASSWD_RE = re.compile(r"[\r\n]?password: $", re.I)
+
+    CLI_PROMPTS_RE = [
+        re.compile(r"[\r\n]?[\w+\-\.:\/\[\]]+(?:\([^\)]+\)){,3}(?:>|#) ?$"),
+        re.compile(r"\[\w+\@[\w\-\.]+(?: [^\]])\] ?[>#\$] ?$")
+    ]
+
+    CLI_ERRORS_RE = [
+        re.compile(r"% ?Error"),
+        re.compile(r"% ?Bad secret"),
+        re.compile(r"invalid input", re.I),
+        re.compile(r"(?:incomplete|ambiguous) command", re.I),
+        re.compile(r"connection timed out", re.I),
+        re.compile(r"[^\r\n]+ not found", re.I),
+        re.compile(r"'[^']' +returned error code: ?\d+"),
+    ]
+
+    def connect(self, params, **kwargs):
+        super(Cli, self).connect(params, kickstart=False, **kwargs)
+        self.shell.send('terminal length 0')
+        self._connected = True
+
+    def authorize(self, params, **kwargs):
+        passwd = params['auth_pass']
+        self.run_commands(
+            Command('enable', prompt=self.NET_PASSWD_RE, response=passwd)
+        )
+
+    def disconnect(self):
+        self._connected = False
+
+    ### Cli methods ###
+
+    def run_commands(self, commands, **kwargs):
+        commands = to_list(commands)
+        return self.execute([str(c) for c in commands])
+
+    ### Config methods ###
+
+    def configure(self, commands, **kwargs):
+        cmds = ['configure terminal']
+        cmds.extend(to_list(commands))
+        cmds.append('end')
+        responses = self.execute(cmds)
+        responses.pop(0)
+        return responses
+
+    def get_config(self, include_defaults=False, **kwargs):
+        cmd = 'show running-config'
+        if include_defaults:
+            cmd += ' all'
+        return self.run_commands(cmd)[0]
+
+    def load_config(self, commands, commit=False, **kwargs):
+        raise NotImplementedError
+
+    def replace_config(self, commands, **kwargs):
+        raise NotImplementedError
+
+    def commit_config(self, **kwargs):
+        raise NotImplementedError
+
+    def abort_config(self, **kwargs):
+        raise NotImplementedError
+
+    def save_config(self):
+        self.execute(['copy running-config startup-config'])
+
+Cli = register_transport('cli', default=True)(Cli)
 
 
 class Restconf(object):
@@ -93,6 +192,7 @@ class Restconf(object):
     def authorize(self):
         pass
 
+
     ### REST methods ###
 
     def request(self, method, path, data=None, headers=None):
@@ -177,64 +277,6 @@ class Restconf(object):
 
     def save_config(self):
         self.put('/api/v1/global/save-config')
-Restconf = register_transport('restconf')(Restconf)
-
-
-class Cli(NetCli):
-    CLI_PROMPTS_RE = [
-        re.compile(r"[\r\n]?[\w+\-\.:\/\[\]]+(?:\([^\)]+\)){,3}(?:>|#) ?$"),
-        re.compile(r"\[\w+\@[\w\-\.]+(?: [^\]])\] ?[>#\$] ?$")
-    ]
-
-    CLI_ERRORS_RE = [
-        re.compile(r"% ?Error"),
-        re.compile(r"% ?Bad secret"),
-        re.compile(r"invalid input", re.I),
-        re.compile(r"(?:incomplete|ambiguous) command", re.I),
-        re.compile(r"connection timed out", re.I),
-        re.compile(r"[^\r\n]+ not found", re.I),
-        re.compile(r"'[^']' +returned error code: ?\d+"),
-    ]
-
-    NET_PASSWD_RE = re.compile(r"[\r\n]?password: $", re.I)
-
-    def connect(self, params, **kwargs):
-        super(Cli, self).connect(params, kickstart=False, **kwargs)
-        self.shell.send('terminal length 0')
 
-    ### implementation of network.Cli ###
-
-    def configure(self, commands, **kwargs):
-        cmds = ['configure terminal']
-        cmds.extend(to_list(commands))
-        cmds.append('end')
-
-        responses = self.execute(cmds)
-        return responses[1:-1]
-
-    def get_config(self, params, **kwargs):
-        cmd = 'show running-config'
-        if params.get('include_defaults'):
-            cmd += ' all'
-        return self.execute(cmd)[0]
-
-    def load_config(self, commands, commit=False, **kwargs):
-        raise NotImplementedError
-
-    def replace_config(self, commands, **kwargs):
-        raise NotImplementedError
-
-    def commit_config(self, **kwargs):
-        raise NotImplementedError
-
-    def abort_config(self, **kwargs):
-        raise NotImplementedError
-
-    def save_config(self):
-        self.execute(['copy running-config startup-config'])
+Restconf = register_transport('restconf')(Restconf)
 
-    def run_commands(self, commands):
-        cmds = to_list(commands)
-        responses = self.execute(cmds)
-        return responses
-Cli = register_transport('cli', default=True)(Cli)

lib/ansible/utils/module_docs_fragments/ios.py

@@ -89,5 +89,33 @@ options:
         met either by individual arguments or values in this dict.
     required: false
     default: null
-
+  force:
+    description:
+      - The force argument instructs the module to not consider the
+        current devices running-config.  When set to true, this will
+        cause the module to push the contents of I(src) into the device
+        without first checking if already configured.
+    required: false
+    default: false
+    choices: ['yes', 'no']
+  running_config:
+    description:
+      - The module, by default, will connect to the remote device and
+        retrieve the current running-config to use as a base for comparing
+        against the contents of source.  There are times when it is not
+        desirable to have the task get the current running-config for
+        every task in a playbook.  The I(config) argument allows the
+        implementer to pass in the configuruation to use as the base
+        config for comparision.
+    required: false
+    default: null
+    aliases: ['config']
+  save_config:
+    description:
+      - Specifies the current C(running-config) should be saved to
+        non-volatile memory so that configuration changes are
+        persistent if the device is restarted.
+    required: false
+    default: null
+    aliases: ['save']
 """