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Standalone client: Improve connection errors. #854

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Jan 23, 2024
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Standalone client: Improve connection errors. #854

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40 changes: 34 additions & 6 deletions glide-core/src/client/standalone_client.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -43,7 +43,7 @@ pub struct StandaloneClient {

pub enum StandaloneClientConnectionError {
NoAddressesProvided,
FailedConnection(Vec<(String, RedisError)>),
FailedConnection(Vec<(Option<String>, RedisError)>),
}

impl std::fmt::Debug for StandaloneClientConnectionError {
Expand All @@ -53,10 +53,29 @@ impl std::fmt::Debug for StandaloneClientConnectionError {
write!(f, "No addresses provided")
}
StandaloneClientConnectionError::FailedConnection(errs) => {
writeln!(f, "Received errors:")?;
for (address, error) in errs {
writeln!(f, "{address}: {error}")?;
}
match errs.len() {
0 => {
writeln!(f, "Failed without explicit error")?;
}
1 => {
let (ref address, ref error) = errs[0];
match address {
Some(address) => {
writeln!(f, "Received error for address `{address}`: {error}")?
}
None => writeln!(f, "Received error: {error}")?,
}
}
_ => {
writeln!(f, "Received errors:")?;
for (address, error) in errs {
match address {
Some(address) => writeln!(f, "{address}: {error}")?,
None => writeln!(f, "{error}")?,
}
}
}
};
Ok(())
}
}
Expand Down Expand Up @@ -104,12 +123,21 @@ impl StandaloneClient {
}
Err((address, (connection, err))) => {
nodes.push(connection);
addresses_and_errors.push((address, err));
addresses_and_errors.push((Some(address), err));
}
}
}

let Some(primary_index) = primary_index else {
if addresses_and_errors.is_empty() {
addresses_and_errors.insert(
0,
(
None,
RedisError::from((redis::ErrorKind::ClientError, "No primary node found")),
),
)
};
return Err(StandaloneClientConnectionError::FailedConnection(
addresses_and_errors,
));
Expand Down
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