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Add cause error information on alternate display#1285

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stevenroose wants to merge1 commit intorust-postgres:master
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40 changes: 23 additions & 17 deletionstokio-postgres/src/error/mod.rs
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Original file line numberDiff line numberDiff line change
Expand Up@@ -379,27 +379,33 @@ impl fmt::Debug for Error {
impl fmt::Display for Error {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
match &self.0.kind {
Kind::Io => fmt.write_str("error communicating with the server"),
Kind::UnexpectedMessage => fmt.write_str("unexpected message from server"),
Kind::Tls => fmt.write_str("error performing TLS handshake"),
Kind::ToSql(idx) => write!(fmt, "error serializing parameter {idx}"),
Kind::FromSql(idx) => write!(fmt, "error deserializing column {idx}"),
Kind::Column(column) => write!(fmt, "invalid column `{column}`"),
Kind::Io => fmt.write_str("error communicating with the server")?,
Kind::UnexpectedMessage => fmt.write_str("unexpected message from server")?,
Kind::Tls => fmt.write_str("error performing TLS handshake")?,
Kind::ToSql(idx) => write!(fmt, "error serializing parameter {idx}")?,
Kind::FromSql(idx) => write!(fmt, "error deserializing column {idx}")?,
Kind::Column(column) => write!(fmt, "invalid column `{column}`")?,
Kind::Parameters(real, expected) => {
write!(fmt, "expected {expected} parameters but got {real}")
write!(fmt, "expected {expected} parameters but got {real}")?;
}
Kind::Closed => fmt.write_str("connection closed"),
Kind::Db => fmt.write_str("db error"),
Kind::Parse => fmt.write_str("error parsing response from server"),
Kind::Encode => fmt.write_str("error encoding message to server"),
Kind::Authentication => fmt.write_str("authentication error"),
Kind::ConfigParse => fmt.write_str("invalid connection string"),
Kind::Config => fmt.write_str("invalid configuration"),
Kind::RowCount => fmt.write_str("query returned an unexpected number of rows"),
Kind::Closed => fmt.write_str("connection closed")?,
Kind::Db => fmt.write_str("db error")?,
Kind::Parse => fmt.write_str("error parsing response from server")?,
Kind::Encode => fmt.write_str("error encoding message to server")?,
Kind::Authentication => fmt.write_str("authentication error")?,
Kind::ConfigParse => fmt.write_str("invalid connection string")?,
Kind::Config => fmt.write_str("invalid configuration")?,
Kind::RowCount => fmt.write_str("query returned an unexpected number of rows")?,
#[cfg(feature = "runtime")]
Kind::Connect => fmt.write_str("error connecting to server"),
Kind::Timeout => fmt.write_str("timeout waiting for server"),
Kind::Connect => fmt.write_str("error connecting to server")?,
Kind::Timeout => fmt.write_str("timeout waiting for server")?,
}
if fmt.alternate() {
if let Some(ref cause) = self.0.cause {
write!(fmt, ": {cause}")?;
}
}
Ok(())
}
}

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