Add --protocol=TCP {TCP|SOCKET|PIPE|MEMORY} support

- Hopefully it works "as is", otherwise I will enhance until PR get ready to be merged let discuss it

plugins/module_utils/mysql.py

@@ -43,7 +43,7 @@ def parse_from_mysql_config_file(cnf):
 
 def mysql_connect(module, login_user=None, login_password=None, config_file='', ssl_cert=None,
                   ssl_key=None, ssl_ca=None, db=None, cursor_class=None, connect_timeout=30,
-                  autocommit=False, config_overrides_defaults=False, check_hostname=None):
+                  autocommit=False, config_overrides_defaults=False, check_hostname=None, protocol=None):
     config = {}
 
     if config_file and os.path.exists(config_file):
@@ -88,6 +88,8 @@ def mysql_connect(module, login_user=None, login_password=None, config_file='',
         config['ssl']['ca'] = ssl_ca
     if db is not None:
         config['db'] = db
+    if protocol is not None and protocol.upper() in ('TCP', 'SOCKET', 'PIPE', 'MEMORY'):
+        config['protocol'] = protocol.upper()
     if connect_timeout is not None:
         config['connect_timeout'] = connect_timeout
     if check_hostname is not None:
@@ -132,6 +134,7 @@ def mysql_common_argument_spec():
         client_key=dict(type='path', aliases=['ssl_key']),
         ca_cert=dict(type='path', aliases=['ssl_ca']),
         check_hostname=dict(type='bool', default=None),
+        protocol=dict(type='str', default=None),
     )
 
 

plugins/modules/mysql_db.py

@@ -150,6 +150,17 @@ options:
     type: bool
     default: no
     version_added: '0.1.0'
+  protocol:
+    description:
+      - Provide protocol arguments on how to connect to MySQL database instance.
+        Used when I(state=dump), I(state=import), I(state=present) and I(state=absent) ignored otherwise.
+        Use case, when needing intermediary MySQL database instance and relying on MySQL Official container image 
+        and need "--protocol=TCP". When using MySQL Official container image, you may run your container with 
+        docker "--net=host" flag in that case you shouldn't need to specify "login_host". Otherwise you will have 
+        to connect to the LAN/WAN IP address or hostname and it that case you need to with the binding as you need to 
+        specified the "login_host" in complement to "protocol". 
+    type: str
+    version_added: '2.3.3'
 
 seealso:
 - module: community.mysql.mysql_info
@@ -207,6 +218,14 @@ EXAMPLES = r'''
     state: import
     target: /tmp/dump.sql.bz2
 
+- name: Restore database in MySQL Official container image instance
+  community.mysql.mysql_db:
+    name: my_db
+    state: import
+    target: /tmp/dump.sql.bz2
+    protocol: tcp
+    login_host: <SOME_IP_ADDRESS_OR_HOSTNAME>
+
 - name: Restore database ignoring errors
   community.mysql.mysql_db:
     name: my_db
@@ -349,7 +368,7 @@ def db_dump(module, host, user, password, db_name, target, all_databases, port,
             single_transaction=None, quick=None, ignore_tables=None, hex_blob=None,
             encoding=None, force=False, master_data=0, skip_lock_tables=False,
             dump_extra_args=None, unsafe_password=False, restrict_config_file=False,
-            check_implicit_admin=False):
+            check_implicit_admin=False, protocol=None):
     cmd = module.get_bin_path('mysqldump', True)
     # If defined, mysqldump demands --defaults-extra-file be the first option
     if config_file:
@@ -382,6 +401,8 @@ def db_dump(module, host, user, password, db_name, target, all_databases, port,
         cmd += " --socket=%s" % shlex_quote(socket)
     else:
         cmd += " --host=%s --port=%i" % (shlex_quote(host), port)
+    if protocol is not None:
+        cmd += " --host=%s" % protocol
 
     if all_databases:
         cmd += " --all-databases"
@@ -429,7 +450,7 @@ def db_dump(module, host, user, password, db_name, target, all_databases, port,
 def db_import(module, host, user, password, db_name, target, all_databases, port, config_file,
               socket=None, ssl_cert=None, ssl_key=None, ssl_ca=None, encoding=None, force=False,
               use_shell=False, unsafe_password=False, restrict_config_file=False,
-              check_implicit_admin=False):
+              check_implicit_admin=False, protocol=None):
     if not os.path.exists(target):
         return module.fail_json(msg="target %s does not exist on the host" % target)
 
@@ -471,6 +492,8 @@ def db_import(module, host, user, password, db_name, target, all_databases, port
     if not all_databases:
         cmd.append("--one-database")
         cmd.append(shlex_quote(''.join(db_name)))
+    if protocol is not None:
+        cmd.append("--protocol=%s" % protocol)
 
     comp_prog_path = None
     if os.path.splitext(target)[-1] == '.gz':
@@ -562,6 +585,7 @@ def main():
         restrict_config_file=dict(type='bool', default=False),
         check_implicit_admin=dict(type='bool', default=False),
         config_overrides_defaults=dict(type='bool', default=False),
+        protocol=dict(type='str', default=None, choices=['tcp', 'socket', 'pipe', 'memory']),
     )
 
     module = AnsibleModule(
@@ -610,6 +634,7 @@ def main():
     restrict_config_file = module.params["restrict_config_file"]
     check_implicit_admin = module.params['check_implicit_admin']
     config_overrides_defaults = module.params['config_overrides_defaults']
+    protocol = module.params['protocol']
 
     if len(db) > 1 and state == 'import':
         module.fail_json(msg="Multiple databases are not supported with state=import")
@@ -628,17 +653,21 @@ def main():
         cursor = None
         if check_implicit_admin:
             try:
-                cursor, db_conn = mysql_connect(module, 'root', '', config_file, ssl_cert, ssl_key, ssl_ca,
+                cursor, db_conn = mysql_connect(
+                    module, 'root', '', config_file, ssl_cert, ssl_key, ssl_ca, protocol,
                     connect_timeout=connect_timeout, check_hostname=check_hostname,
-                                                config_overrides_defaults=config_overrides_defaults)
+                    config_overrides_defaults=config_overrides_defaults
+                )
             except Exception as e:
                 check_implicit_admin = False
                 pass
 
         if not cursor:
-            cursor, db_conn = mysql_connect(module, login_user, login_password, config_file, ssl_cert, ssl_key, ssl_ca,
+            cursor, db_conn = mysql_connect(
+                module, login_user, login_password, config_file, ssl_cert, ssl_key, ssl_ca, protocol,
                 connect_timeout=connect_timeout, config_overrides_defaults=config_overrides_defaults,
-                                            check_hostname=check_hostname)
+                check_hostname=check_hostname
+            )
     except Exception as e:
         if os.path.exists(config_file):
             module.fail_json(msg="unable to connect to database, check login_user and login_password are correct or %s has the credentials. "
@@ -690,7 +719,7 @@ def main():
                                      ssl_ca, single_transaction, quick, ignore_tables,
                                      hex_blob, encoding, force, master_data, skip_lock_tables,
                                      dump_extra_args, unsafe_login_password, restrict_config_file,
-                                     check_implicit_admin)
+                                     check_implicit_admin, protocol)
         if rc != 0:
             module.fail_json(msg="%s" % stderr)
         module.exit_json(changed=True, db=db_name, db_list=db, msg=stdout,
@@ -710,7 +739,7 @@ def main():
                                        login_port, config_file,
                                        socket, ssl_cert, ssl_key, ssl_ca,
                                        encoding, force, use_shell, unsafe_login_password,
-                                       restrict_config_file, check_implicit_admin)
+                                       restrict_config_file, check_implicit_admin, protocol)
         if rc != 0:
             module.fail_json(msg="%s" % stderr)
         module.exit_json(changed=True, db=db_name, db_list=db, msg=stdout,

plugins/modules/mysql_info.py

@@ -526,6 +526,7 @@ def main():
         filter=dict(type='list'),
         exclude_fields=dict(type='list'),
         return_empty_dbs=dict(type='bool', default=False),
+        protocol=dict(type='str', default=None, choices=['tcp', 'socket', 'pipe', 'memory']),
     )
 
     module = AnsibleModule(
@@ -545,6 +546,7 @@ def main():
     filter_ = module.params['filter']
     exclude_fields = module.params['exclude_fields']
     return_empty_dbs = module.params['return_empty_dbs']
+    protocol = module.params['protocol']
 
     if filter_:
         filter_ = [f.strip() for f in filter_]
@@ -556,8 +558,9 @@ def main():
         module.fail_json(msg=mysql_driver_fail_msg)
 
     try:
-        cursor, db_conn = mysql_connect(module, login_user, login_password,
-                                        config_file, ssl_cert, ssl_key, ssl_ca, db,
+        cursor, db_conn = mysql_connect(
+            module, login_user, login_password, config_file,
+            ssl_cert, ssl_key, ssl_ca, db, protocol,
             check_hostname=check_hostname,
             connect_timeout=connect_timeout, cursor_class='DictCursor')
     except Exception as e:

plugins/modules/mysql_query.py

@@ -129,6 +129,7 @@ def main():
         positional_args=dict(type='list'),
         named_args=dict(type='dict'),
         single_transaction=dict(type='bool', default=False),
+        protocol=dict(type='str', default=None, choices=['tcp', 'socket', 'pipe', 'memory']),
     )
 
     module = AnsibleModule(
@@ -148,6 +149,7 @@ def main():
     check_hostname = module.params['check_hostname']
     config_file = module.params['config_file']
     query = module.params["query"]
+    protocol = module.params["protocol"]
 
     if not isinstance(query, (str, list)):
         module.fail_json(msg="the query option value must be a string or list, passed %s" % type(query))
@@ -176,11 +178,13 @@ def main():
 
     # Connect to DB:
     try:
-        cursor, db_connection = mysql_connect(module, login_user, login_password,
-                                              config_file, ssl_cert, ssl_key, ssl_ca, db,
+        cursor, db_connection = mysql_connect(
+            module, login_user, login_password,
+            config_file, ssl_cert, ssl_key, ssl_ca, db, protocol,
             check_hostname=check_hostname,
             connect_timeout=connect_timeout,
-                                              cursor_class='DictCursor', autocommit=autocommit)
+            cursor_class='DictCursor', autocommit=autocommit
+        )
     except Exception as e:
         module.fail_json(msg="unable to connect to database, check login_user and "
                              "login_password are correct or %s has the credentials. "

plugins/modules/mysql_user.py

@@ -355,6 +355,7 @@ def main():
         plugin_auth_string=dict(default=None, type='str'),
         resource_limits=dict(type='dict'),
         force_context=dict(type='bool', default=False),
+        protocol=dict(type='str', default=None, choices=['tcp', 'socket', 'pipe', 'memory']),
     )
     module = AnsibleModule(
         argument_spec=argument_spec,
@@ -382,6 +383,7 @@ def main():
     db = ''
     if module.params["force_context"]:
         db = 'mysql'
+    protocol = module.params["protocol"]
     sql_log_bin = module.params["sql_log_bin"]
     plugin = module.params["plugin"]
     plugin_hash_string = module.params["plugin_hash_string"]
@@ -400,14 +402,18 @@ def main():
     try:
         if check_implicit_admin:
             try:
-                cursor, db_conn = mysql_connect(module, "root", "", config_file, ssl_cert, ssl_key, ssl_ca, db,
-                                                connect_timeout=connect_timeout, check_hostname=check_hostname)
+                cursor, db_conn = mysql_connect(
+                    module, "root", "", config_file, ssl_cert, ssl_key, ssl_ca, db, protocol,
+                    connect_timeout=connect_timeout, check_hostname=check_hostname
+                )
             except Exception:
                 pass
 
         if not cursor:
-            cursor, db_conn = mysql_connect(module, login_user, login_password, config_file, ssl_cert, ssl_key, ssl_ca, db,
-                                            connect_timeout=connect_timeout, check_hostname=check_hostname)
+            cursor, db_conn = mysql_connect(
+                module, login_user, login_password, config_file, ssl_cert, ssl_key, ssl_ca, db, protocol,
+                connect_timeout=connect_timeout, check_hostname=check_hostname
+            )
     except Exception as e:
         module.fail_json(msg="unable to connect to database, check login_user and login_password are correct or %s has the credentials. "
                              "Exception message: %s" % (config_file, to_native(e)))

plugins/modules/mysql_variables.py

@@ -175,6 +175,7 @@ def main():
         variable=dict(type='str'),
         value=dict(type='str'),
         mode=dict(type='str', choices=['global', 'persist', 'persist_only'], default='global'),
+        protocol=dict(type='str', default=None, choices=['tcp', 'socket', 'pipe', 'memory']),
     )
 
     module = AnsibleModule(
@@ -193,6 +194,7 @@ def main():
     mysqlvar = module.params["variable"]
     value = module.params["value"]
     mode = module.params["mode"]
+    protocol = module.params["protocol"]
 
     if mysqlvar is None:
         module.fail_json(msg="Cannot run without variable to operate with")
@@ -204,8 +206,10 @@ def main():
         warnings.filterwarnings('error', category=mysql_driver.Warning)
 
     try:
-        cursor, db_conn = mysql_connect(module, user, password, config_file, ssl_cert, ssl_key, ssl_ca, db,
-                                        connect_timeout=connect_timeout, check_hostname=check_hostname)
+        cursor, db_conn = mysql_connect(
+            module, user, password, config_file, ssl_cert, ssl_key, ssl_ca, db, protocol,
+            connect_timeout=connect_timeout, check_hostname=check_hostname
+        )
     except Exception as e:
         if os.path.exists(config_file):
             module.fail_json(msg=("unable to connect to database, check login_user and "