Merge pull request #4187 from privateip/vyos_facts

WIP initial add of new module vyos_facts

network/vyos/vyos_facts.py

@@ -0,0 +1,308 @@
+#!/usr/bin/python
+#
+# 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/>.
+#
+DOCUMENTATION = """
+---
+module: vyos_facts
+version_added: "2.2"
+author: "Peter Sprygada (@privateip)"
+short_description: Collect facts from remote devices running OS
+description:
+  - Collects a base set of device facts from a remote device that
+    is running VyOS.  The M(vyos_facts) module prepends all of the
+    base network fact keys with U(ansible_net_<fact>).  The facts
+    module will always collect a base set of facts from the device
+    and can enable or disable collection of additional facts.
+extends_documentation_fragment: vyos
+options:
+  gather_subset:
+    description:
+      - When supplied, this argument will restrict the facts collected
+        to a given subset.  Possible values for this argument inlcude
+        all, hardware, config, and interfaces.  Can specify a list of
+        values to include a larger subset.  Values can also be used
+        with an initial M(!) to specify that a specific subset should
+        not be collected.
+    required: false
+    default: "!config"
+"""
+
+EXAMPLES = """
+# Note: examples below use the following provider dict to handle
+#       transport and authentication to the node
+vars:
+  cli:
+    host: "{{ inventory_hostname }}"
+    username: vyos
+    password: vyos
+    transport: cli
+
+- name: collect all facts from the device
+  vyos_facts:
+    gather_subset: all
+
+- name: collect only the config and default facts
+  vyos_facts:
+    gather_subset:config
+
+- name: collect everything exception the config
+  vyos_facts:
+    gather_subset: "!config"
+"""
+
+RETURN = """
+ansible_net_config:
+  description: The running-config from the device
+  returned: when config is configured
+  type: str
+ansible_net_commits:
+  descrption: The set of available configuration revisions
+  returned: when present
+  type: list
+ansible_net_hostname:
+  description: The configured system hostname
+  returned: always
+  type: str
+ansible_net_model:
+  description: The device model string
+  returned: always
+  type: str
+ansible_net_serialnum:
+  description: The serial number of the device
+  returned: always
+  type: str
+ansible_net_version:
+  description: The version of the software running
+  returned: always
+  type: str
+ansible_net_neighbors:
+  description: The set of LLDP neighbors
+  returned: when interface is configured
+  type: list
+ansible_net_gather_subset:
+  description: The list of subsets gathered by the module
+  returned: always
+  type: list
+"""
+import re
+
+from ansible.module_utils.netcmd import CommandRunner
+from ansible.module_utils.vyos import NetworkModule
+
+class FactsBase(object):
+
+    def __init__(self, runner):
+        self.runner = runner
+        self.facts = dict()
+
+        self.commands()
+
+class Default(FactsBase):
+
+    def commands(self):
+        self.runner.add_command('show version')
+        self.runner.add_command('show host name')
+
+    def populate(self):
+        data = self.runner.get_command('show version')
+
+        self.facts['version'] = self.parse_version(data)
+        self.facts['serialnum'] = self.parse_serialnum(data)
+        self.facts['model'] = self.parse_model(data)
+
+        self.facts['hostname'] = self.runner.get_command('show host name')
+
+    def parse_version(self, data):
+        match = re.search(r'Version:\s*(\S+)', data)
+        if match:
+            return match.group(1)
+
+    def parse_model(self, data):
+        match = re.search(r'HW model:\s*(\S+)', data)
+        if match:
+            return match.group(1)
+
+    def parse_serialnum(self, data):
+        match = re.search(r'HW S/N:\s+(\S+)', data)
+        if match:
+            return match.group(1)
+
+
+class Config(FactsBase):
+
+    def commands(self):
+        self.runner.add_command('show configuration commands')
+        self.runner.add_command('show system commit')
+
+    def populate(self):
+
+        config = self.runner.get_command('show configuration commands')
+        self.facts['config'] = str(config).split('\n')
+
+        commits = self.runner.get_command('show system commit')
+        entries = list()
+        entry = None
+
+        for line in commits.split('\n'):
+            match = re.match('(\d+)\s+(.+)by(.+)via(.+)', line)
+            if match:
+                if entry:
+                    entries.append(entry)
+
+                entry = dict(revision=match.group(1),
+                             datetime=match.group(2),
+                             by=str(match.group(3)).strip(),
+                             via=str(match.group(4)).strip(),
+                             comment=None)
+            else:
+                entry['comment'] = line.strip()
+
+        self.facts['commits'] = entries
+
+
+class Neighbors(FactsBase):
+
+    def commands(self):
+        self.runner.add_command('show lldp neighbors')
+        self.runner.add_command('show lldp neighbors detail')
+
+    def populate(self):
+        all_neighbors = self.runner.get_command('show lldp neighbors')
+        if 'LLDP not configured' not in all_neighbors:
+            neighbors = self.parse(
+                self.runner.get_command('show lldp neighbors detail')
+            )
+            self.facts['neighbors'] = self.parse_neighbors(neighbors)
+
+    def parse(self, data):
+        parsed = list()
+        values = None
+        for line in data.split('\n'):
+            if len(line) == 0:
+                continue
+            elif line[0] == ' ':
+                values += '\n%s' % line
+            elif line.startswith('Interface'):
+                if values:
+                    parsed.append(values)
+                values = line
+        return parsed
+
+    def parse_neighbors(self, data):
+        facts = dict()
+        for item in data:
+            interface = self.parse_interface(item)
+            host = self.parse_host(item)
+            port = self.parse_port(item)
+            if interface not in facts:
+                facts[interface] = list()
+            facts[interface].append(dict(host=host, port=port))
+        return facts
+
+    def parse_interface(self, data):
+        match = re.search(r'^Interface:\s+(\S+),', data)
+        return match.group(1)
+
+    def parse_host(self, data):
+        match = re.search(r'SysName:\s+(.+)$', data, re.M)
+        if match:
+            return match.group(1)
+
+    def parse_port(self, data):
+        match = re.search(r'PortDescr:\s+(.+)$', data, re.M)
+        if match:
+            return match.group(1)
+
+
+FACT_SUBSETS = dict(
+    default=Default,
+    neighbors=Neighbors,
+    config=Config
+)
+
+VALID_SUBSETS = frozenset(FACT_SUBSETS.keys())
+
+def main():
+    spec = dict(
+        gather_subset=dict(default=['!config'], type='list')
+    )
+
+    module = NetworkModule(argument_spec=spec, supports_check_mode=True)
+
+    gather_subset = module.params['gather_subset']
+
+    runable_subsets = set()
+    exclude_subsets = set()
+
+    for subset in gather_subset:
+        if subset == 'all':
+            runable_subsets.update(VALID_SUBSETS)
+            continue
+
+        if subset.startswith('!'):
+            subset = subset[1:]
+            if subset == 'all':
+                exclude_subsets.update(VALID_SUBSETS)
+                continue
+            exclude = True
+        else:
+            exclude = False
+
+        if subset not in VALID_SUBSETS:
+            module.fail_json(msg='Bad subset')
+
+        if exclude:
+            exclude_subsets.add(subset)
+        else:
+            runable_subsets.add(subset)
+
+    if not runable_subsets:
+        runable_subsets.update(VALID_SUBSETS)
+
+    runable_subsets.difference_update(exclude_subsets)
+    runable_subsets.add('default')
+
+    facts = dict()
+    facts['gather_subset'] = list(runable_subsets)
+
+    runner = CommandRunner(module)
+
+    instances = list()
+    for key in runable_subsets:
+        instances.append(FACT_SUBSETS[key](runner))
+
+    runner.run_commands()
+
+    try:
+        for inst in instances:
+            inst.populate()
+            facts.update(inst.facts)
+    except Exception:
+        exc = get_exception()
+        module.fail_json(msg='unknown failure', output=runner.items, exc=str(exc))
+
+    ansible_facts = dict()
+    for key, value in facts.iteritems():
+        key = 'ansible_net_%s' % key
+        ansible_facts[key] = value
+
+    module.exit_json(ansible_facts=ansible_facts)
+
+
+if __name__ == '__main__':
+    main()
+