odbc renamed to rdbms in module names and options

• For MongooseIM users: simply replace all instances of odbc in your config files with rdbms. E.g. {auth_method, odbc}. would now be {auth_method, rdbms}..
  It's also important to note that all metrics that previously contained odbc in their names have also been renamed to contain rdbms instead.

Please note that odbc_server has been completely replaced with new outgoing_pools (see one of the next sections of this document) config element.

• For developers calling MongooseIM modules: most modules, functions and atoms had odbc in their names replaced with rdbms. The only exceptions to this rule were names actually pertaining to the ODBC driver, e.g. mongoose_rdbms_odbc.

ejabberd.cfg renamed to mongooseim.cfg

Rename the existing config file of MongooseIM from ejabberd.cfg to mongooseim.cfg.

Pools configuration

Configuring pools to external services has changed, please see Outgoing Connection doc for more details.

NOTE: Keep in mind that outgoing_pools is a list of pools, it may turn out that you will have more than one entry in the list when more than a single outgoing pool is needed.

Example - Old format

{elasticsearch_server, [{host, "elastic.host.com"}, {port, 9042}]}.
{riak_server, [{pool_size, 20}, {address, "127.0.0.1"}, {port, 8087}, {riak_pb_socket_opts, []}]}.
{http_connections, [{conn1, [{server, "http://server:8080"}, {pool_size, 50}]} ]}.
{cassandra_servers, [
  {default, 100,
   [
    {servers,
     [
      {"cassandra_server1.example.com", 9042},
      {"cassandra_server2.example.com", 9042},
      {"cassandra_server3.example.com", 9042},
      {"cassandra_server4.example.com", 9042}
     ]
    },
    {keyspace, "big_mongooseim"}
   ]
  }
 ]
}.

Example - New format

This section provides direct "translation" of configuration from "Old format" section.

{outgoing_pools, [
  {elastic, global, default, [], [{host, "elastic.host.com"}, {port, 9042}]},
  {riak, global, default, [{workers, 20}], [{address, "127.0.0.1"}, {port, 8087}]},
  {http, global, conn1, [{workers, 50}], [{server, "http://server:8080"}]},
  {cassandra, global, default, [{workers, 100}], [
        {servers, [
          {"cassandra_server1.example.com", 9042},
          {"cassandra_server2.example.com", 9042},
          {"cassandra_server3.example.com", 9042},
          {"cassandra_server4.example.com", 9042}
        ]},
        {keyspace, "big_mongooseim"}
    ]}
]}.

RDBMS configuration migration

RDBMS pools are no longer configured by a {pool, odbc, _} tuple, instead using the generic outgoing pools mechanism. The connection configuration is now passed via server option of the pool insted of being configured via a top-level {odbc_server, _} tuple. Similarly, the number of workers is no longer configured by odbc_pool_size, and the default pool no longer set by odbc_pool. A top-level odbc_keepalive_interval is now also specified as an option for a specific pool. For example:

{odbc_pool_size, 10}.
{pool, odbc, default}.
{odbc_server_type, mssql}.
{odbc_server, "DSN=mongoose-mssql;UID=sa;PWD=mongooseim_secret+ESL123"}.
{odbc_keepalive_interval, 10}.

will now become:

{rdbms_server_type, mssql}.
{outgoing_pools, [
 {rdbms, global, default, [{workers, 10}],
  [{server, "DSN=mongoose-mssql;UID=sa;PWD=mongooseim_secret+ESL123"}, {keepalive_interval, 10}]}
]}.

Note that odbc_server_type was only renamed to rdbms_server_type and still remains a top-level configuration value.

sm_backend

If you had the sm_backend set to redis like below:

{sm_backend, {redis, [{pool_size, 3}, {worker_config, [{host, "localhost"}, {port, 6379}]}]}}.

The pool needs to be defined inside outgoing_pools like this:

{outgoing_pools, [
 {redis, global, default, [{workers, 3}],
  [{host, "localhost"},
   {port, 6379}]}
]}.

and the sm_backend configuration needs to changed to just:

{sm_backend, {redis, []}}.

mod_global_distrib

If you had mod_global_distrib configured in the following way:

{mod_global_distrib, [
        (...)
        {redis, [
              {pool_size, 24},
              {server, "172.16.0.3"}
             ]}
       ]}

The redis pool needs to be defined inside outgoing_pools:

{outgoing_pools, [
 {redis, global, global_distrib, [{workers, 24}], [{host, "172.16.0.3"}]}
]}.