A10 module improvements

* moved common code to an module_util snippet
* rewrote logic to make each module idempotent
* added new capabilities like the write_config option

lib/ansible/module_utils/a10.py

+# This code is part of Ansible, but is an independent component.
+# This particular file snippet, and this file snippet only, is BSD licensed.
+# Modules you write using this snippet, which is embedded dynamically by Ansible
+# still belong to the author of the module, and may assign their own license
+# to the complete work.
+#
+# Copyright (c), Michael DeHaan <michael.dehaan@gmail.com>, 2012-2013
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification,
+# are permitted provided that the following conditions are met:
+#
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright notice,
+#      this list of conditions and the following disclaimer in the documentation
+#      and/or other materials provided with the distribution.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+# USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+AXAPI_PORT_PROTOCOLS = {
+    'tcp': 2,
+    'udp': 3,
+}
+
+AXAPI_VPORT_PROTOCOLS = {
+    'tcp': 2,
+    'udp': 3,
+    'fast-http': 9,
+    'http': 11,
+    'https': 12,
+}
+
+def a10_argument_spec():
+    return dict(
+        host=dict(type='str', required=True),
+        username=dict(type='str', aliases=['user', 'admin'], required=True),
+        password=dict(type='str', aliases=['pass', 'pwd'], required=True, no_log=True),
+        write_config=dict(type='bool', default=False)
+    )
+
+def axapi_failure(result):
+    if 'response' in result and result['response'].get('status') == 'fail':
+        return True
+    return False
+
+def axapi_call(module, url, post=None):
+    '''
+    Returns a datastructure based on the result of the API call
+    '''
+    rsp, info = fetch_url(module, url, data=post)
+    if not rsp or info['status'] >= 400:
+        module.fail_json(msg="failed to connect (status code %s), error was %s" % (info['status'], info.get('msg', 'no error given')))
+    try:
+        raw_data = rsp.read()
+        data = json.loads(raw_data)
+    except ValueError:
+        # at least one API call (system.action.write_config) returns
+        # XML even when JSON is requested, so do some minimal handling
+        # here to prevent failing even when the call succeeded
+        if 'status="ok"' in raw_data.lower():
+            data = {"response": {"status": "OK"}}
+        else:
+            data = {"response": {"status": "fail", "err": {"msg": raw_data}}}
+    except:
+        module.fail_json(msg="could not read the result from the host")
+    finally:
+        rsp.close()
+    return data
+
+def axapi_authenticate(module, base_url, username, password):
+    url = '%s&method=authenticate&username=%s&password=%s' % (base_url, username, password)
+    result = axapi_call(module, url)
+    if axapi_failure(result):
+        return module.fail_json(msg=result['response']['err']['msg'])
+    sessid = result['session_id']
+    return base_url + '&session_id=' + sessid
+
+def axapi_enabled_disabled(flag):
+    '''
+    The axapi uses 0/1 integer values for flags, rather than strings
+    or booleans, so convert the given flag to a 0 or 1. For now, params
+    are specified as strings only so thats what we check.
+    '''
+    if flag == 'enabled':
+        return 1
+    else:
+        return 0
+
+def axapi_get_port_protocol(protocol):
+    return AXAPI_PORT_PROTOCOLS.get(protocol.lower(), None)
+
+def axapi_get_vport_protocol(protocol):
+    return AXAPI_VPORT_PROTOCOLS.get(protocol.lower(), None)
+