Remove 'mongodb' integration from 'contrib'.

The latest version of 'mongodb' is async and implements its own internal
connection pooling.

contrib/lib/Cargo.toml

@@ -36,7 +36,6 @@ postgres_pool = ["databases", "postgres", "r2d2_postgres"]
 mysql_pool = ["databases", "mysql", "r2d2_mysql"]
 sqlite_pool = ["databases", "rusqlite", "r2d2_sqlite"]
 redis_pool = ["databases", "redis", "r2d2_redis"]
-mongodb_pool = ["databases", "mongodb", "r2d2-mongodb"]
 memcache_pool = ["databases", "memcache", "r2d2-memcache"]
 
 [dependencies]
@@ -71,8 +70,6 @@ rusqlite = { version = "0.23", optional = true }
 r2d2_sqlite = { version = "0.16", optional = true }
 redis = { version = "0.15", optional = true }
 r2d2_redis = { version = "0.13", optional = true }
-mongodb = { version = "0.3.12", optional = true }
-r2d2-mongodb = { version = "0.2.0", optional = true }
 memcache = { version = "0.14", optional = true }
 r2d2-memcache = { version = "0.5", optional = true }
 

contrib/lib/src/databases.rs

@@ -346,7 +346,6 @@
 //! | Sqlite   | [Diesel]              | `1`       | [`diesel::SqliteConnection`]   | `diesel_sqlite_pool`   |
 //! | Sqlite   | [`Rusqlite`]          | `0.23`    | [`rusqlite::Connection`]       | `sqlite_pool`          |
 //! | Redis    | [`redis-rs`]          | `0.15`    | [`redis::Connection`]          | `redis_pool`           |
-//! | MongoDB  | [`mongodb`]           | `0.3.12`  | [`mongodb::db::Database`]      | `mongodb_pool`         |
 //! | Memcache | [`memcache`]          | `0.14`    | [`memcache::Client`]           | `memcache_pool`        |
 //!
 //! [Diesel]: https://diesel.rs
@@ -362,8 +361,6 @@
 //! [Rust-Postgres]: https://github.com/sfackler/rust-postgres
 //! [`rust-mysql-simple`]: https://github.com/blackbeam/rust-mysql-simple
 //! [`diesel::PgConnection`]: http://docs.diesel.rs/diesel/pg/struct.PgConnection.html
-//! [`mongodb`]: https://github.com/mongodb-labs/mongo-rust-driver-prototype
-//! [`mongodb::db::Database`]: https://docs.rs/mongodb/0.3.12/mongodb/db/type.Database.html
 //! [`memcache`]: https://github.com/aisk/rust-memcache
 //! [`memcache::Client`]: https://docs.rs/memcache/0.14/memcache/struct.Client.html
 //!
@@ -416,9 +413,6 @@ use self::r2d2::ManageConnection;
 #[cfg(feature = "redis_pool")] pub extern crate redis;
 #[cfg(feature = "redis_pool")] pub extern crate r2d2_redis;
 
-#[cfg(feature = "mongodb_pool")] pub extern crate mongodb;
-#[cfg(feature = "mongodb_pool")] pub extern crate r2d2_mongodb;
-
 #[cfg(feature = "memcache_pool")] pub extern crate memcache;
 #[cfg(feature = "memcache_pool")] pub extern crate r2d2_memcache;
 
@@ -795,17 +789,6 @@ impl Poolable for redis::Connection {
     }
 }
 
-#[cfg(feature = "mongodb_pool")]
-impl Poolable for mongodb::db::Database {
-    type Manager = r2d2_mongodb::MongodbConnectionManager;
-    type Error = DbError<mongodb::Error>;
-
-    fn pool(config: DatabaseConfig<'_>) -> Result<r2d2::Pool<Self::Manager>, Self::Error> {
-        let manager = r2d2_mongodb::MongodbConnectionManager::new_with_uri(config.url).map_err(DbError::Custom)?;
-        r2d2::Pool::builder().max_size(config.pool_size).build(manager).map_err(DbError::PoolError)
-    }
-}
-
 #[cfg(feature = "memcache_pool")]
 impl Poolable for memcache::Client {
     type Manager = r2d2_memcache::MemcacheConnectionManager;

scripts/test.sh

@@ -76,7 +76,6 @@ if [ "$1" = "--contrib" ]; then
     mysql_pool
     sqlite_pool
     redis_pool
-    mongodb_pool
     memcache_pool
     brotli_compression
     gzip_compression

site/guide/6-state.md

@@ -236,7 +236,6 @@ Presently, Rocket provides built-in support for the following databases:
 | Sqlite   | [Diesel]              | `1`       | [`diesel::SqliteConnection`]   | `diesel_sqlite_pool`   |
 | Sqlite   | [`Rusqlite`]          | `0.23`    | [`rusqlite::Connection`]       | `sqlite_pool`          |
 | Redis    | [`redis-rs`]          | `0.15`    | [`redis::Connection`]          | `redis_pool`           |
-| MongoDB  | [`mongodb`]           | `0.3.12`  | [`mongodb::db::Database`]      | `mongodb_pool`         |
 | Memcache | [`memcache`]          | `0.14`    | [`memcache::Client`]           | `memcache_pool`        |
 
 [`r2d2`]: https://crates.io/crates/r2d2
@@ -253,8 +252,6 @@ Presently, Rocket provides built-in support for the following databases:
 [Rust-Postgres]: https://github.com/sfackler/rust-postgres
 [`rust-mysql-simple`]: https://github.com/blackbeam/rust-mysql-simple
 [`diesel::PgConnection`]: http://docs.diesel.rs/diesel/pg/struct.PgConnection.html
-[`mongodb`]: https://github.com/mongodb-labs/mongo-rust-driver-prototype
-[`mongodb::db::Database`]: https://docs.rs/mongodb/0.3.12/mongodb/db/type.Database.html
 [`memcache`]: https://github.com/aisk/rust-memcache
 [`memcache::Client`]: https://docs.rs/memcache/0.14/memcache/struct.Client.html