Struct ConfigError 

pub struct ConfigError { /* private fields */ }

A configuration value is invalid — wrong type, out of range, or otherwise unacceptable.

Corresponds to Java’s ConfigException, thrown throughout ConfigDef and the *Config constructors. It lives in org.apache.kafka.common.config, not common.errors, and has no entry in Errors, so it carries no protocol code.

Java extends chain: ConfigException -> KafkaException

Note it extends KafkaException directly, NOT IllegalArgumentException: an invalid configuration is a Kafka error (is_kafka_error is true), unlike a java.lang.IllegalArgumentException.

Implementations

impl ConfigError

pub fn new(message: impl Into<String>) -> Self

Create the error with the given message and no cause, mirroring Java’s (String message) constructor.

This keeps the plain name under CLAUDE.md §2: the dominant Java shape among the classes this macro declares is (String message) + (String message, Throwable cause), whose parameter-name intersection is {message} — matched exactly by (String message).

pub fn with_source(message: impl Into<String>, source: Error) -> Self

Create the error with the given message and an underlying cause, mirroring Java’s (String message, Throwable cause) constructor.

Suffixed with the one parameter beyond the {message} intersection (CLAUDE.md §2) — see new.

pub fn with_default_message() -> Self

Create the error with the default message for its error code, mirroring Java’s Errors.exception().

Not a constructor overload, so CLAUDE.md §2’s suffixing does not apply: it translates the Errors static factory, which fills in Errors.message() and has no Java constructor counterpart.

pub fn message(&self) -> &str

The error message.

pub fn source(&self) -> Option<&Error>

The underlying cause, if any. Mirrors Java’s getCause().

impl ConfigError

pub fn with_name_value(name: impl Display, value: impl Display) -> Self

Create a config error naming the offending value and configuration key, mirroring Java’s ConfigException(String name, Object value) (:32): "Invalid value {value} for configuration {name}".

pub fn with_name_value_message( name: impl Display, value: impl Display, message: impl Display, ) -> Self

Create a config error naming the value, key, and a detail message, mirroring Java’s ConfigException(String name, Object value, String message) (:36): "Invalid value {value} for configuration {name}: {message}".

Trait Implementations

impl Clone for ConfigError

fn clone(&self) -> ConfigError

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ConfigError

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

Formats the value using the given formatter.

impl Display for ConfigError

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

Formats the value using the given formatter.

impl Error for ConfigError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.