initial add of junos_config module

This adds a new module, junos_config, useed to configure Juniper JUNOS based
devices.  The config module can be used to set an ordered set of set and
delete statements over a cli transport

network/junos/junos_config.py

@@ -0,0 +1,184 @@
+#!/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: junos_config
+version_added: "2.1"
+author: "Peter sprygada (@privateip)"
+short_description: Manage Juniper JUNOS configuration sections
+description:
+  - This module provides an implementation for configuring Juniper
+    JUNOS devices.  The configuration statements must start with either
+    `set` or `delete` and are compared against the current device
+    configuration and only changes are pushed to the device.
+extends_documentation_fragment: junos
+options:
+  lines:
+    description:
+      - The ordered set of commands that should be configured in the
+        section.  The commands must be the exact same commands as found
+        in the device config.  Be sure to note the configuration
+        command syntanx as some commands are automatically modified by the
+        device config parser.
+    required: true
+  before:
+    description:
+      - The ordered set of commands to push on to the command stack if
+        a change needs to be made.  This allows the playbook designer
+        the opportunity to perform configuration commands prior to pushing
+        any changes without affecting how the set of commands are matched
+        against the system
+    required: false
+    default: null
+  after:
+    description:
+      - The ordered set of commands to append to the end of the command
+        stack if a changed needs to be made.  Just like with I(before) this
+        allows the playbook designer to append a set of commands to be
+        executed after the command set.
+    required: false
+    default: null
+  force:
+    description:
+      - The force argument instructs the module to not consider the
+        current device 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: BOOLEANS
+  config:
+    description:
+      - The module, by default, will connect to the remote device and
+        retrieve the current 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
+"""
+
+EXAMPLES = """
+- junos_config:
+    lines: ['set system host-name {{ inventory_hostname }}']
+"""
+
+RETURN = """
+
+lines:
+  description: The set of commands that will be pushed to the remote device
+  returned: always
+  type: list
+  sample: ['...', '...']
+
+response:
+  description: The set of responses from issuing the commands on the device
+  returned: always
+  type: list
+  sample: ['...', '...']
+
+"""
+import re
+import itertools
+
+def get_config(module):
+    config = module.params['config'] or dict()
+    if not config and not module.params['force']:
+        config = module.config
+    return config
+
+def to_lines(config):
+    lines = list()
+    for item in config:
+        if item.raw.endswith(';'):
+            line = [p.text for p in item.parents]
+            line.append(item.text)
+            lines.append(' '.join(line))
+    return lines
+
+def main():
+
+    argument_spec = dict(
+        lines=dict(aliases=['commands'], required=True, type='list'),
+        before=dict(type='list'),
+        after=dict(type='list'),
+        force=dict(default=False, type='bool'),
+        config=dict()
+    )
+
+    module = get_module(argument_spec=argument_spec,
+                        supports_check_mode=True)
+
+    lines = module.params['lines']
+
+    before = module.params['before']
+    after = module.params['after']
+
+    contents = get_config(module)
+    parsed = module.parse_config(contents)
+    config = to_lines(parsed)
+
+    result = dict(changed=False)
+    result['_config'] = config
+
+    candidate = list()
+    for line in lines:
+        parts = line.split()
+        action = parts[0]
+        cfgline = ' '.join(parts[1:])
+
+        if action not in ['set', 'delete']:
+            module.fail_json(msg='line must start with either `set` or `delete`')
+        elif action == 'set' and cfgline not in config:
+            candidate.append(line)
+        elif action == 'delete' and not config:
+            candidate.append(line)
+        elif action == 'delete':
+            regexp = re.compile(r'^%s$' % cfgline)
+            for cfg in config:
+                if regexp.match(cfg):
+                    candidate.append(line)
+                    break
+
+
+
+    if candidate:
+        if before:
+            candidate[:0] = before
+
+        if after:
+            candidate.extend(after)
+
+        if not module.check_mode:
+            response = module.configure(candidate)
+            result['response'] = response
+        result['changed'] = True
+
+    result['lines'] = candidate
+    return module.exit_json(**result)
+
+from ansible.module_utils.basic import *
+from ansible.module_utils.shell import *
+from ansible.module_utils.netcfg import *
+from ansible.module_utils.junos import *
+if __name__ == '__main__':
+    main()
+