Struct diesel_logger::LoggingConnection

pub struct LoggingConnection<C: Connection>(_);

Wraps a diesel Connection to time and log each query using the configured logger for the log crate.

Currently, this produces a debug log on every query, an info on queries that take longer than 1 second, and a warning on queries that take longer than 5 seconds. These thresholds will be configurable in a future version.

Methods

impl<C: Connection> LoggingConnection<C>

fn new(conn: C) -> Self

Trait Implementations

impl<C: Connection> Deref for LoggingConnection<C>

type Target = C

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<C> SimpleConnection for LoggingConnection<C> where
    C: Connection + Send + 'static, 

fn batch_execute(&self, query: &str) -> QueryResult<()>

Execute multiple SQL statements within the same string.

impl<C: Connection> Connection for LoggingConnection<C> where
    C: Connection<TransactionManager = AnsiTransactionManager> + Send + 'static,
    C::Backend: UsesAnsiSavepointSyntax,
    <C::Backend as Backend>::QueryBuilder: Default, 

type Backend = C::Backend

The backend this type connects to

type TransactionManager = C::TransactionManager

fn establish(database_url: &str) -> ConnectionResult<Self>

Establishes a new connection to the database

fn execute(&self, query: &str) -> QueryResult<usize>

fn query_by_index<T, U>(&self, source: T) -> QueryResult<Vec<U>> where
    T: AsQuery,
    T::Query: QueryFragment<Self::Backend> + QueryId,
    Self::Backend: HasSqlType<T::SqlType>,
    U: Queryable<T::SqlType, Self::Backend>, 

fn query_by_name<T, U>(&self, source: &T) -> QueryResult<Vec<U>> where
    T: QueryFragment<Self::Backend> + QueryId,
    U: QueryableByName<Self::Backend>, 

fn execute_returning_count<T>(&self, source: &T) -> QueryResult<usize> where
    T: QueryFragment<Self::Backend> + QueryId, 

fn transaction_manager(&self) -> &Self::TransactionManager

fn transaction<T, E, F>(&self, f: F) -> Result<T, E> where
    E: From<Error>,
    F: FnOnce() -> Result<T, E>, 

Executes the given function inside of a database transaction

fn begin_test_transaction(&self) -> Result<(), Error>

Creates a transaction that will never be committed. This is useful for tests. Panics if called while inside of a transaction.

fn test_transaction<T, E, F>(&self, f: F) -> T where
    E: Debug,
    F: FnOnce() -> Result<T, E>, 

Executes the given function inside a transaction, but does not commit it. Panics if the given function returns an error.