use bytes::{BufMut, Bytes};
use crate::primitives::fixed::{get_i16, put_i16};
use crate::primitives::string_bytes::{put_compact_nullable_bytes, put_nullable_bytes};
use crate::primitives::string_bytes_borrowed::{
get_compact_nullable_bytes_borrowed, get_nullable_bytes_borrowed,
};
use crate::tagged_fields::{WriteTaggedFields, read_tagged_fields, tagged_fields_len};
use crate::{DecodeBorrow, Encode, ProtocolError, UnknownTaggedFields};
pub const API_KEY: i16 = 58;
pub const MIN_VERSION: i16 = 0;
pub const MAX_VERSION: i16 = 0;
pub const FLEXIBLE_MIN: i16 = 0;
#[inline]
fn is_flexible(version: i16) -> bool {
version >= FLEXIBLE_MIN
}
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct EnvelopeResponse<'a> {
pub response_data: Option<&'a [u8]>,
pub error_code: i16,
pub unknown_tagged_fields: UnknownTaggedFields,
}
impl EnvelopeResponse<'_> {
pub fn to_owned(&self) -> crate::owned::envelope_response::EnvelopeResponse {
crate::owned::envelope_response::EnvelopeResponse {
response_data: (self.response_data).map(Bytes::copy_from_slice),
error_code: (self.error_code),
unknown_tagged_fields: self.unknown_tagged_fields.clone(),
}
}
}
impl Encode for EnvelopeResponse<'_> {
fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
if !(MIN_VERSION..=MAX_VERSION).contains(&version) {
return Err(ProtocolError::UnsupportedVersion {
api_key: API_KEY,
version,
});
}
let flex = is_flexible(version);
if version >= 0 {
if flex {
put_compact_nullable_bytes(buf, self.response_data);
} else {
put_nullable_bytes(buf, self.response_data);
}
}
if version >= 0 {
put_i16(buf, self.error_code);
}
if flex {
let tagged = WriteTaggedFields::new();
tagged.write(buf, &self.unknown_tagged_fields);
}
Ok(())
}
fn encoded_len(&self, version: i16) -> usize {
let flex = is_flexible(version);
let mut n: usize = 0;
if version >= 0 {
n += match self.response_data {
None => {
if flex {
1
} else {
4
}
}
Some(b) => {
if flex {
crate::primitives::varint::uvarint_len(u32::try_from(b.len() + 1).unwrap())
+ b.len()
} else {
4 + b.len()
}
}
};
}
if version >= 0 {
n += 2;
}
if flex {
let known_pairs: Vec<(u32, usize)> = Vec::new();
n += tagged_fields_len(&known_pairs, &self.unknown_tagged_fields);
}
n
}
}
impl<'de> DecodeBorrow<'de> for EnvelopeResponse<'de> {
fn decode_borrow(buf: &mut &'de [u8], version: i16) -> Result<Self, ProtocolError> {
if !(MIN_VERSION..=MAX_VERSION).contains(&version) {
return Err(ProtocolError::UnsupportedVersion {
api_key: API_KEY,
version,
});
}
let flex = is_flexible(version);
let mut out = Self::default();
if version >= 0 {
out.response_data = if flex {
get_compact_nullable_bytes_borrowed(buf)?
} else {
get_nullable_bytes_borrowed(buf)?
};
}
if version >= 0 {
out.error_code = get_i16(buf)?;
}
if flex {
out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| Ok(false))?;
}
Ok(out)
}
}
#[cfg(test)]
impl EnvelopeResponse<'_> {
#[must_use]
pub fn populated(version: i16) -> Self {
let mut m = Self::default();
if version >= 0 {
m.response_data = Some(&b"x"[..]);
}
if version >= 0 {
m.error_code = 1i16;
}
m
}
}