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use aws_smithy_types::DateTime;
use std::error::Error as StdError;
use std::fmt;
#[non_exhaustive]
#[derive(Debug)]
pub enum Error {
HeadersTooLong,
HeaderValueTooLong,
InvalidHeaderNameLength,
InvalidHeaderValue,
InvalidHeaderValueType(u8),
InvalidHeadersLength,
InvalidMessageLength,
InvalidUtf8String,
MessageChecksumMismatch(u32, u32),
MessageTooLong,
PayloadTooLong,
PreludeChecksumMismatch(u32, u32),
TimestampValueTooLarge(DateTime),
Marshalling(String),
Unmarshalling(String),
}
impl StdError for Error {}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
use Error::*;
match self {
HeadersTooLong => write!(f, "headers too long to fit in event stream frame"),
HeaderValueTooLong => write!(f, "header value too long to fit in event stream frame"),
InvalidHeaderNameLength => write!(f, "invalid header name length"),
InvalidHeaderValue => write!(f, "invalid header value"),
InvalidHeaderValueType(val) => write!(f, "invalid header value type: {}", val),
InvalidHeadersLength => write!(f, "invalid headers length"),
InvalidMessageLength => write!(f, "invalid message length"),
InvalidUtf8String => write!(f, "encountered invalid UTF-8 string"),
MessageChecksumMismatch(expected, actual) => write!(
f,
"message checksum 0x{:X} didn't match expected checksum 0x{:X}",
actual, expected
),
MessageTooLong => write!(f, "message too long to fit in event stream frame"),
PayloadTooLong => write!(f, "message payload too long to fit in event stream frame"),
PreludeChecksumMismatch(expected, actual) => write!(
f,
"prelude checksum 0x{:X} didn't match expected checksum 0x{:X}",
actual, expected
),
TimestampValueTooLarge(time) => write!(
f,
"timestamp value {:?} is too large to fit into an i64",
time
),
Marshalling(error) => write!(f, "failed to marshall message: {}", error),
Unmarshalling(error) => write!(f, "failed to unmarshall message: {}", error),
}
}
}
