New networking module: voss_command (#43741)

* new voss_command module

* Removed incorrect version_added line

lib/ansible/plugins/cliconf/voss.py

@@ -0,0 +1,231 @@
+#
+# (c) 2018 Extreme Networks Inc.
+#
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+#
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+import collections
+import re
+import json
+
+from ansible.errors import AnsibleConnectionFailure
+from ansible.module_utils._text import to_text
+from ansible.module_utils.network.common.config import NetworkConfig, dumps
+from ansible.module_utils.network.common.utils import to_list
+from ansible.plugins.cliconf import CliconfBase, enable_mode
+
+
+class Cliconf(CliconfBase):
+
+    @enable_mode
+    def get_config(self, source='running', flags=None, format=None):
+        if source not in ('running', 'startup'):
+            return self.invalid_params("fetching configuration from %s is not supported" % source)
+
+        if format:
+            raise ValueError("'format' value %s is not supported for get_config" % format)
+
+        if not flags:
+            flags = []
+        if source == 'running':
+            cmd = 'show running-config '
+        else:
+            cmd = 'more /intflash/config.cfg'
+
+        cmd += ' '.join(to_list(flags))
+        cmd = cmd.strip()
+
+        return self.send_command(cmd)
+
+    def get_diff(self, candidate=None, running=None, diff_match='line', diff_ignore_lines=None, path=None, diff_replace='line'):
+        """
+        Generate diff between candidate and running configuration. If the
+        remote host supports onbox diff capabilities ie. supports_onbox_diff in that case
+        candidate and running configurations are not required to be passed as argument.
+        In case if onbox diff capability is not supported candidate argument is mandatory
+        and running argument is optional.
+        :param candidate: The configuration which is expected to be present on remote host.
+        :param running: The base configuration which is used to generate diff.
+        :param diff_match: Instructs how to match the candidate configuration with current device configuration
+                      Valid values are 'line', 'strict', 'exact', 'none'.
+                      'line' - commands are matched line by line
+                      'strict' - command lines are matched with respect to position
+                      'exact' - command lines must be an equal match
+                      'none' - will not compare the candidate configuration with the running configuration
+        :param diff_ignore_lines: Use this argument to specify one or more lines that should be
+                                  ignored during the diff.  This is used for lines in the configuration
+                                  that are automatically updated by the system.  This argument takes
+                                  a list of regular expressions or exact line matches.
+        :param path: The ordered set of parents that uniquely identify the section or hierarchy
+                     the commands should be checked against.  If the parents argument
+                     is omitted, the commands are checked against the set of top
+                    level or global commands.
+        :param diff_replace: Instructs on the way to perform the configuration on the device.
+                        If the replace argument is set to I(line) then the modified lines are
+                        pushed to the device in configuration mode.  If the replace argument is
+                        set to I(block) then the entire command block is pushed to the device in
+                        configuration mode if any line is not correct.
+        :return: Configuration diff in  json format.
+               {
+                   'config_diff': '',
+                   'banner_diff': {}
+               }
+
+        """
+        diff = {}
+        device_operations = self.get_device_operations()
+        option_values = self.get_option_values()
+
+        if candidate is None and device_operations['supports_generate_diff']:
+            raise ValueError("candidate configuration is required to generate diff")
+
+        if diff_match not in option_values['diff_match']:
+            raise ValueError("'match' value %s in invalid, valid values are %s" % (diff_match, ', '.join(option_values['diff_match'])))
+
+        if diff_replace not in option_values['diff_replace']:
+            raise ValueError("'replace' value %s in invalid, valid values are %s" % (diff_replace, ', '.join(option_values['diff_replace'])))
+
+        # prepare candidate configuration
+        candidate_obj = NetworkConfig(indent=1)
+        candidate_obj.load(candidate)
+
+        if running and diff_match != 'none':
+            # running configuration
+            running_obj = NetworkConfig(indent=1, contents=running, ignore_lines=diff_ignore_lines)
+            configdiffobjs = candidate_obj.difference(running_obj, path=path, match=diff_match, replace=diff_replace)
+
+        else:
+            configdiffobjs = candidate_obj.items
+
+        diff['config_diff'] = dumps(configdiffobjs, 'commands') if configdiffobjs else ''
+        return diff
+
+    @enable_mode
+    def edit_config(self, candidate=None, commit=True, replace=None, comment=None):
+        resp = {}
+        operations = self.get_device_operations()
+        self.check_edit_config_capabiltiy(operations, candidate, commit, replace, comment)
+
+        results = []
+        requests = []
+        if commit:
+            self.send_command('configure terminal')
+            for line in to_list(candidate):
+                if not isinstance(line, collections.Mapping):
+                    line = {'command': line}
+
+                cmd = line['command']
+                if cmd != 'end' and cmd[0] != '!':
+                    results.append(self.send_command(**line))
+                    requests.append(cmd)
+
+            self.send_command('end')
+        else:
+            raise ValueError('check mode is not supported')
+
+        resp['request'] = requests
+        resp['response'] = results
+        return resp
+
+    def get(self, command=None, prompt=None, answer=None, sendonly=False, output=None):
+        if not command:
+            raise ValueError('must provide value of command to execute')
+        if output:
+            raise ValueError("'output' value %s is not supported for get" % output)
+
+        return self.send_command(command=command, prompt=prompt, answer=answer, sendonly=sendonly)
+
+    def get_device_info(self):
+        device_info = {}
+
+        device_info['network_os'] = 'voss'
+        reply = self.get(command='show sys-info')
+        data = to_text(reply, errors='surrogate_or_strict').strip()
+
+        match = re.search(r'SysDescr\s+: \S+ \((\S+)\)', data)
+        if match:
+            device_info['network_os_version'] = match.group(1)
+
+        match = re.search(r'Chassis\s+: (\S+)', data)
+        if match:
+            device_info['network_os_model'] = match.group(1)
+
+        match = re.search(r'SysName\s+: (\S+)', data)
+        if match:
+            device_info['network_os_hostname'] = match.group(1)
+
+        return device_info
+
+    def get_device_operations(self):
+        return {
+            'supports_diff_replace': True,
+            'supports_commit': False,
+            'supports_rollback': False,
+            'supports_defaults': True,
+            'supports_onbox_diff': False,
+            'supports_commit_comment': False,
+            'supports_multiline_delimiter': False,
+            'supports_diff_match': True,
+            'supports_diff_ignore_lines': True,
+            'supports_generate_diff': True,
+            'supports_replace': False
+        }
+
+    def get_option_values(self):
+        return {
+            'format': ['text'],
+            'diff_match': ['line', 'strict', 'exact', 'none'],
+            'diff_replace': ['line', 'block'],
+            'output': []
+        }
+
+    def get_capabilities(self):
+        result = dict()
+        result['rpc'] = self.get_base_rpc() + ['edit_banner', 'get_diff', 'run_commands', 'get_defaults_flag']
+        result['network_api'] = 'cliconf'
+        result['device_info'] = self.get_device_info()
+        result['device_operations'] = self.get_device_operations()
+        result.update(self.get_option_values())
+        return json.dumps(result)
+
+    def run_commands(self, commands=None, check_rc=True):
+        if commands is None:
+            raise ValueError("'commands' value is required")
+
+        responses = list()
+        for cmd in to_list(commands):
+            if not isinstance(cmd, collections.Mapping):
+                cmd = {'command': cmd}
+
+            output = cmd.pop('output', None)
+            if output:
+                raise ValueError("'output' value %s is not supported for run_commands" % output)
+
+            try:
+                out = self.send_command(**cmd)
+            except AnsibleConnectionFailure as e:
+                if check_rc:
+                    raise
+                out = getattr(e, 'err', e)
+
+            responses.append(out)
+
+        return responses
+
+    def get_defaults_flag(self):
+        return 'verbose'