added new functionality to ops_command

* commands argument now accepts a dict arguments
* waitfor has been renamed to wait_for with an alias to waitfor
* only show commands are allowed when check mode is specified
* config mode is no longer allowed in the command stack
* add argument match with valid values any, all

Tested on OpenSwitch 0.4.0

network/openswitch/ops_command.py

@@ -37,15 +37,29 @@ options:
         module is not returned until the condition is satisfied or
         the number of retires as expired.
     required: true
-  waitfor:
+  wait_for:
     description:
       - List of conditions to evaluate against the output of the
-        command. The task will wait for a each condition to be true
+        command. The task will wait for each condition to be true
         before moving forward. If the conditional is not true
-        within the configured number of I(retries), the task fails.
+        within the configured number of retries, the task fails.
         See examples.
     required: false
     default: null
+    aliases: ['waitfor']
+    version_added: "2.2"
+  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 I(wait_for) must be satisfied.  If
+        the value is set to C(any) then only one of the values must be
+        satisfied.
+    required: false
+    default: all
+    choices: ['any', 'all']
+    version_added: "2.2"
   retries:
     description:
       - Specifies the number of retries a command should by tried
@@ -65,21 +79,32 @@ options:
 """
 
 EXAMPLES = """
+# Note: examples below use the following provider dict to handle
+#       transport and authentication to the node.
+vars:
+  cli:
+    host: "{{ inventory_hostname }}"
+    username: netop
+    password: netop
+    transport: cli
+
 - ops_command:
     commands:
       - show version
-  register: output
+    provider: "{{ cli }}"
 
 - ops_command:
     commands:
       - show version
-    waitfor:
+    wait_for:
       - "result[0] contains OpenSwitch"
+    provider: "{{ cli }}"
 
 - ops_command:
     commands:
       - show version
       - show interfaces
+    provider: "{{ cli }}"
 """
 
 RETURN = """
@@ -101,9 +126,12 @@ failed_conditions:
   type: list
   sample: ['...', '...']
 """
+from ansible.module_utils.basic import get_exception
+from ansible.module_utils.netcli import CommandRunner
+from ansible.module_utils.netcli import AddCommandError, FailedConditionsError
+from ansible.module_utils.openswitch import NetworkModule, NetworkError
 
-import time
+VALID_KEYS = ['command', 'prompt', 'response']
-
 
 def to_lines(stdout):
     for item in stdout:
@@ -111,57 +139,85 @@ def to_lines(stdout):
             item = str(item).split('\n')
         yield item
 
+def parse_commands(module):
+    for cmd in module.params['commands']:
+        if isinstance(cmd, basestring):
+            cmd = dict(command=cmd, output=None)
+        elif 'command' not in cmd:
+            module.fail_json(msg='command keyword argument is required')
+        elif not set(cmd.keys()).issubset(VALID_KEYS):
+            module.fail_json(msg='unknown keyword specified')
+        yield cmd
 
 def main():
     spec = dict(
-        commands=dict(type='list'),
+        # { command: <str>, prompt: <str>, response: <str> }
-        waitfor=dict(type='list'),
+        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'),
+        interval=dict(default=1, type='int')
-        transport=dict(default='cli', choices=['cli'])
     )
 
-    module = get_module(argument_spec=spec,
+    module = NetworkModule(argument_spec=spec,
+                           connect_on_load=False,
                            supports_check_mode=True)
 
-    commands = module.params['commands']
+    commands = list(parse_commands(module))
+    conditionals = module.params['wait_for'] or list()
 
-    retries = module.params['retries']
+    warnings = list()
-    interval = module.params['interval']
 
+    runner = CommandRunner(module)
+
+    for cmd in commands:
+        if module.check_mode and not cmd['command'].startswith('show'):
+            warnings.append('only show commands are supported when using '
+                            'check mode, not executing `%s`' % cmd['command'])
+        else:
+            if cmd['command'].startswith('conf'):
+                module.fail_json(msg='ops_command does not support running '
+                                     'config mode commands.  Please use '
+                                     'ops_config instead')
             try:
-        queue = set()
+                runner.add_command(**cmd)
-        for entry in (module.params['waitfor'] or list()):
+            except AddCommandError:
-            queue.add(Conditional(entry))
-    except AttributeError:
                 exc = get_exception()
-        module.fail_json(msg=exc.message)
+                warnings.append('duplicate command detected: %s' % cmd)
 
-    result = dict(changed=False)
+    for item in conditionals:
+        runner.add_conditional(item)
 
-    while retries > 0:
+    runner.retries = module.params['retries']
-        response = module.execute(commands)
+    runner.interval = module.params['interval']
-        result['stdout'] = response
+    runner.match = module.params['match']
 
-        for item in list(queue):
+    try:
-            if item(response):
+        runner.run()
-                queue.remove(item)
+    except FailedConditionsError:
+        exc = get_exception()
+        module.fail_json(msg=str(exc), failed_conditions=exc.failed_conditions)
+    except NetworkError:
+        exc = get_exception()
+        module.fail_json(msg=str(exc))
 
-        if not queue:
+    result = dict(changed=False, stdout=list())
-            break
 
-        time.sleep(interval)
+    for cmd in commands:
-        retries -= 1
+        try:
-    else:
+            output = runner.get_command(cmd['command'])
-        failed_conditions = [item.raw for item in queue]
+        except ValueError:
-        module.fail_json(msg='timeout waiting for value', failed_conditions=failed_conditions)
+            output = 'command not executed due to check_mode, see warnings'
+        result['stdout'].append(output)
 
+    result['warnings'] = warnings
     result['stdout_lines'] = list(to_lines(result['stdout']))
-    return module.exit_json(**result)
 
-from ansible.module_utils.basic import *
+    module.exit_json(**result)
-from ansible.module_utils.shell import *
+
-from ansible.module_utils.netcfg import *
+
-from ansible.module_utils.openswitch import *
 if __name__ == '__main__':
     main()
+