Macro ereport

macro_rules! ereport {
    (ERROR, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (PANIC, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (FATAL, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (WARNING, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (NOTICE, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (INFO, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (LOG, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (DEBUG5, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (DEBUG4, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (DEBUG3, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (DEBUG2, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    (DEBUG1, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
    ($loglevel:expr, $errcode:expr, $message:expr $(, $detail:expr)? $(,)?) => { ... };
}

Sends some kind of message to Postgres, and if it’s a PgLogLevel::ERROR or greater, Postgres’ error handling takes over and, in the case of PgLogLevel::ERROR, aborts the current transaction.

This macro is necessary when one needs to supply a specific SQL error code as part of their error message.

The argument order is:

• log_level: [PgLogLevel]
• error_code: [PgSqlErrorCode]
• message: String
• (optional) detail: String

Examples

ereport!(PgLogLevel::ERROR, PgSqlErrorCode::ERRCODE_INTERNAL_ERROR, "oh noes!"); // abort the transaction

ereport!(PgLogLevel::LOG, PgSqlErrorCode::ERRCODE_SUCCESSFUL_COMPLETION, "this is just a message"); // log output only