reroot

1 files changed, 222 insertions, 0 deletions

diff --git a/plugins/modules/vyos_command.py b/plugins/modules/vyos_command.py
new file mode 100644
index 00000000..16487e37
--- /dev/null
+++ b/plugins/modules/vyos_command.py
@@ -0,0 +1,222 @@
+#!/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/>.
+#
+
+ANSIBLE_METADATA = {'metadata_version': '1.1',
+                    'status': ['preview'],
+                    'supported_by': 'network'}
+
+
+DOCUMENTATION = """
+---
+module: vyos_command
+version_added: "2.2"
+author: "Nathaniel Case (@qalthos)"
+short_description: Run one or more commands on VyOS devices
+description:
+  - The command module allows running one or more commands on remote
+    devices running VyOS.  This module can also be introspected
+    to validate key parameters before returning successfully.  If the
+    conditional statements are not met in the wait period, the task
+    fails.
+  - Certain C(show) commands in VyOS produce many lines of output and
+    use a custom pager that can cause this module to hang.  If the
+    value of the environment variable C(ANSIBLE_VYOS_TERMINAL_LENGTH)
+    is not set, the default number of 10000 is used.
+extends_documentation_fragment: vyos
+options:
+  commands:
+    description:
+      - The ordered set of commands to execute on the remote device
+        running VyOS.  The output from the command execution is
+        returned to the playbook.  If the I(wait_for) argument is
+        provided, the module is not returned until the condition is
+        satisfied or the number of retries has been exceeded.
+    required: true
+  wait_for:
+    description:
+      - Specifies what to evaluate from the output of the command
+        and what conditionals to apply.  This argument will cause
+        the task to wait for a particular conditional to be true
+        before moving forward.  If the conditional is not true
+        by the configured I(retries), the task fails. See examples.
+    aliases: ['waitfor']
+  match:
+    description:
+      - The I(match) argument is used in conjunction with the
+        I(wait_for) argument to specify the match policy. Valid
+        values are C(all) or C(any).  If the value is set to C(all)
+        then all conditionals in the wait_for must be satisfied.  If
+        the value is set to C(any) then only one of the values must be
+        satisfied.
+    default: all
+    choices: ['any', 'all']
+  retries:
+    description:
+      - Specifies the number of retries a command should be tried
+        before it is considered failed. The command is run on the
+        target device every retry and evaluated against the I(wait_for)
+        conditionals.
+    default: 10
+  interval:
+    description:
+      - Configures the interval in seconds to wait between I(retries)
+        of the command. If the command does not pass the specified
+        conditions, the interval indicates how long to wait before
+        trying the command again.
+    default: 1
+
+notes:
+  - Tested against VYOS 1.1.7
+  - Running C(show system boot-messages all) will cause the module to hang since
+    VyOS is using a custom pager setting to display the output of that command.
+  - If a command sent to the device requires answering a prompt, it is possible
+    to pass a dict containing I(command), I(answer) and I(prompt). See examples.
+"""
+
+EXAMPLES = """
+tasks:
+  - name: show configuration on ethernet devices eth0 and eth1
+    vyos_command:
+      commands:
+        - show interfaces ethernet {{ item }}
+    with_items:
+      - eth0
+      - eth1
+
+  - name: run multiple commands and check if version output contains specific version string
+    vyos_command:
+      commands:
+        - show version
+        - show hardware cpu
+      wait_for:
+        - "result[0] contains 'VyOS 1.1.7'"
+
+  - name: run command that requires answering a prompt
+    vyos_command:
+      commands:
+        - command: 'rollback 1'
+          prompt: 'Proceed with reboot? [confirm][y]'
+          answer: y
+"""
+
+RETURN = """
+stdout:
+  description: The set of responses from the commands
+  returned: always apart from low level errors (such as action plugin)
+  type: list
+  sample: ['...', '...']
+stdout_lines:
+  description: The value of stdout split into a list
+  returned: always
+  type: list
+  sample: [['...', '...'], ['...'], ['...']]
+failed_conditions:
+  description: The list of conditionals that have failed
+  returned: failed
+  type: list
+  sample: ['...', '...']
+warnings:
+  description: The list of warnings (if any) generated by module based on arguments
+  returned: always
+  type: list
+  sample: ['...', '...']
+"""
+import time
+
+from ansible.module_utils._text import to_text
+from ansible.module_utils.basic import AnsibleModule
+from ansible.module_utils.network.common.parsing import Conditional
+from ansible.module_utils.network.common.utils import transform_commands, to_lines
+from ansible_collections.vyos.vyos.plugins.module_utils.network.vyos.vyos import run_commands
+from ansible_collections.vyos.vyos.plugins.module_utils.network.vyos.vyos import vyos_argument_spec
+
+
+def parse_commands(module, warnings):
+    commands = transform_commands(module)
+
+    if module.check_mode:
+        for item in list(commands):
+            if not item['command'].startswith('show'):
+                warnings.append(
+                    'Only show commands are supported when using check mode, not '
+                    'executing %s' % item['command']
+                )
+                commands.remove(item)
+
+    return commands
+
+
+def main():
+    spec = dict(
+        commands=dict(type='list', required=True),
+
+        wait_for=dict(type='list', aliases=['waitfor']),
+        match=dict(default='all', choices=['all', 'any']),
+
+        retries=dict(default=10, type='int'),
+        interval=dict(default=1, type='int')
+    )
+
+    spec.update(vyos_argument_spec)
+
+    module = AnsibleModule(argument_spec=spec, supports_check_mode=True)
+
+    warnings = list()
+    result = {'changed': False, 'warnings': warnings}
+    commands = parse_commands(module, warnings)
+    wait_for = module.params['wait_for'] or list()
+
+    try:
+        conditionals = [Conditional(c) for c in wait_for]
+    except AttributeError as exc:
+        module.fail_json(msg=to_text(exc))
+
+    retries = module.params['retries']
+    interval = module.params['interval']
+    match = module.params['match']
+
+    for _ in range(retries):
+        responses = run_commands(module, commands)
+
+        for item in list(conditionals):
+            if item(responses):
+                if match == 'any':
+                    conditionals = list()
+                    break
+                conditionals.remove(item)
+
+        if not conditionals:
+            break
+
+        time.sleep(interval)
+
+    if conditionals:
+        failed_conditions = [item.raw for item in conditionals]
+        msg = 'One or more conditional statements have not been satisfied'
+        module.fail_json(msg=msg, failed_conditions=failed_conditions)
+
+    result.update({
+        'stdout': responses,
+        'stdout_lines': list(to_lines(responses)),
+    })
+
+    module.exit_json(**result)
+
+
+if __name__ == '__main__':
+    main()