Struct hdbconnect::ConnectionManager

pub struct ConnectionManager { /* fields omitted */ }

Implementation of r2d2's ManageConnection interface.

Example

let connect_params = ConnectParams::builder()
    .hostname("abcd123")
    .port(2222)
    .dbuser("MEIER")
    .password("schlau")
    .build()
    .unwrap();
let manager = ConnectionManager::new(&connect_params).unwrap();
let pool = r2d2::Pool::builder().max_size(POOL_SIZE).build(manager).unwrap();

for _ in 0..NUM_THREADS {
    let pool = pool.clone();
    thread::spawn(move || {
        let mut conn = pool.get().unwrap();
        // ... work with your connection
    });
}

Implementations

impl ConnectionManager

pub fn new<P: IntoConnectParams>(p: P) -> HdbResult<Self>

Creates a new ConnectionManager.

Errors

HdbError::Usage if not enough or inconsistent information was provided

Trait Implementations

impl Debug for ConnectionManager

pub fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl ManageConnection for ConnectionManager

type Connection = Connection

The connection type this manager deals with.

type Error = HdbError

The error type returned by Connections.

pub fn connect(&self) -> Result<Self::Connection, Self::Error>

Attempts to create a new connection.

pub fn is_valid(&self, conn: &mut Self::Connection) -> Result<(), Self::Error>

Determines if the connection is still connected to the database.

pub fn has_broken(&self, _conn: &mut Self::Connection) -> bool

Quickly determines if the connection is no longer usable.