use bytes::BufMut;
use crate::{
DecodeBorrow, Encode, ProtocolError, UnknownTaggedFields,
owned::partition_record,
primitives::{
array::{
array_len_prefix_len, get_array_len, get_nullable_array_len,
nullable_array_len_prefix_len, put_array_len, put_nullable_array_len,
},
fixed::{get_i8, get_i32, put_i8, put_i32},
uuid::{Uuid, get_uuid, put_uuid},
},
tagged_fields::{WriteTaggedFields, encode_to_bytes, read_tagged_fields, tagged_fields_len},
};
pub const MIN_VERSION: i16 = 0;
pub const MAX_VERSION: i16 = 2;
pub const FLEXIBLE_MIN: i16 = 0;
#[inline]
#[must_use]
pub fn is_flexible(version: i16) -> bool {
version >= FLEXIBLE_MIN
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct PartitionRecord {
pub partition_id: i32,
pub topic_id: Uuid,
pub replicas: Vec<i32>,
pub isr: Vec<i32>,
pub removing_replicas: Vec<i32>,
pub adding_replicas: Vec<i32>,
pub leader: i32,
pub leader_epoch: i32,
pub partition_epoch: i32,
pub directories: Vec<Uuid>,
pub leader_recovery_state: i8,
pub eligible_leader_replicas: Option<Vec<i32>>,
pub last_known_elr: Option<Vec<i32>>,
pub unknown_tagged_fields: UnknownTaggedFields,
}
impl Default for PartitionRecord {
fn default() -> Self {
Self {
partition_id: -1i32,
topic_id: Uuid::default(),
replicas: Vec::new(),
isr: Vec::new(),
removing_replicas: Vec::new(),
adding_replicas: Vec::new(),
leader: -1i32,
leader_epoch: -1i32,
partition_epoch: -1i32,
directories: Vec::new(),
leader_recovery_state: 0i8,
eligible_leader_replicas: None,
last_known_elr: None,
unknown_tagged_fields: UnknownTaggedFields::default(),
}
}
}
impl PartitionRecord {
#[must_use]
pub fn to_owned(&self) -> partition_record::PartitionRecord {
partition_record::PartitionRecord {
partition_id: (self.partition_id),
topic_id: (self.topic_id),
replicas: (self.replicas).clone(),
isr: (self.isr).clone(),
removing_replicas: (self.removing_replicas).clone(),
adding_replicas: (self.adding_replicas).clone(),
leader: (self.leader),
leader_epoch: (self.leader_epoch),
partition_epoch: (self.partition_epoch),
directories: (self.directories).clone(),
leader_recovery_state: (self.leader_recovery_state),
eligible_leader_replicas: (self.eligible_leader_replicas).clone(),
last_known_elr: (self.last_known_elr).clone(),
unknown_tagged_fields: self.unknown_tagged_fields.clone(),
}
}
fn encode_field_0<B: BufMut>(&self, buf: &mut B, version: i16, _flex: bool) {
if version >= 0 {
put_i32(buf, self.partition_id);
}
}
fn encode_field_1<B: BufMut>(&self, buf: &mut B, version: i16, _flex: bool) {
if version >= 0 {
put_uuid(buf, self.topic_id);
}
}
fn encode_field_2<B: BufMut>(
&self,
buf: &mut B,
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
{
put_array_len(buf, (self.replicas).len(), flex)?;
for it in &self.replicas {
put_i32(buf, *it);
}
}
}
Ok(())
}
fn encode_field_3<B: BufMut>(
&self,
buf: &mut B,
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
{
put_array_len(buf, (self.isr).len(), flex)?;
for it in &self.isr {
put_i32(buf, *it);
}
}
}
Ok(())
}
fn encode_field_4<B: BufMut>(
&self,
buf: &mut B,
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
{
put_array_len(buf, (self.removing_replicas).len(), flex)?;
for it in &self.removing_replicas {
put_i32(buf, *it);
}
}
}
Ok(())
}
fn encode_field_5<B: BufMut>(
&self,
buf: &mut B,
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
{
put_array_len(buf, (self.adding_replicas).len(), flex)?;
for it in &self.adding_replicas {
put_i32(buf, *it);
}
}
}
Ok(())
}
fn encode_field_6<B: BufMut>(&self, buf: &mut B, version: i16, _flex: bool) {
if version >= 0 {
put_i32(buf, self.leader);
}
}
fn encode_field_7<B: BufMut>(&self, buf: &mut B, version: i16, _flex: bool) {
if version >= 0 {
put_i32(buf, self.leader_epoch);
}
}
fn encode_field_8<B: BufMut>(&self, buf: &mut B, version: i16, _flex: bool) {
if version >= 0 {
put_i32(buf, self.partition_epoch);
}
}
fn encode_field_9<B: BufMut>(
&self,
buf: &mut B,
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 1 {
{
put_array_len(buf, (self.directories).len(), flex)?;
for it in &self.directories {
put_uuid(buf, *it);
}
}
}
Ok(())
}
fn encode_tagged_fields<B: BufMut>(
&self,
buf: &mut B,
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if flex {
let mut tagged = WriteTaggedFields::new();
if self.leader_recovery_state != 0i8 {
let payload = encode_to_bytes(1, |b| {
put_i8(b, self.leader_recovery_state);
Ok(())
})?;
tagged.add(0, payload);
}
if version >= 2 && self.eligible_leader_replicas.is_some() {
let payload = encode_to_bytes(
{
let opt: Option<&Vec<_>> = (self.eligible_leader_replicas).as_ref();
let prefix = nullable_array_len_prefix_len(opt.map(Vec::len), flex);
let body: usize = opt.map_or(0, |v| v.iter().map(|_| 4).sum());
prefix + body
},
|b| {
{
let len = (self.eligible_leader_replicas).as_ref().map(Vec::len);
put_nullable_array_len(b, len, flex)?;
if let Some(v) = &self.eligible_leader_replicas {
for it in v {
put_i32(b, *it);
}
}
}
Ok(())
},
)?;
tagged.add(1, payload);
}
if version >= 2 && self.last_known_elr.is_some() {
let payload = encode_to_bytes(
{
let opt: Option<&Vec<_>> = (self.last_known_elr).as_ref();
let prefix = nullable_array_len_prefix_len(opt.map(Vec::len), flex);
let body: usize = opt.map_or(0, |v| v.iter().map(|_| 4).sum());
prefix + body
},
|b| {
{
let len = (self.last_known_elr).as_ref().map(Vec::len);
put_nullable_array_len(b, len, flex)?;
if let Some(v) = &self.last_known_elr {
for it in v {
put_i32(b, *it);
}
}
}
Ok(())
},
)?;
tagged.add(2, payload);
}
tagged.write(buf, &self.unknown_tagged_fields)?;
}
Ok(())
}
fn decode_field_0(
out: &mut Self,
buf: &mut &[u8],
version: i16,
_flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.partition_id = get_i32(buf)?;
}
Ok(())
}
fn decode_field_1(
out: &mut Self,
buf: &mut &[u8],
version: i16,
_flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.topic_id = get_uuid(buf)?;
}
Ok(())
}
fn decode_field_2(
out: &mut Self,
buf: &mut &[u8],
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.replicas = {
let n = get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(buf)?);
}
v
};
}
Ok(())
}
fn decode_field_3(
out: &mut Self,
buf: &mut &[u8],
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.isr = {
let n = get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(buf)?);
}
v
};
}
Ok(())
}
fn decode_field_4(
out: &mut Self,
buf: &mut &[u8],
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.removing_replicas = {
let n = get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(buf)?);
}
v
};
}
Ok(())
}
fn decode_field_5(
out: &mut Self,
buf: &mut &[u8],
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.adding_replicas = {
let n = get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(buf)?);
}
v
};
}
Ok(())
}
fn decode_field_6(
out: &mut Self,
buf: &mut &[u8],
version: i16,
_flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.leader = get_i32(buf)?;
}
Ok(())
}
fn decode_field_7(
out: &mut Self,
buf: &mut &[u8],
version: i16,
_flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.leader_epoch = get_i32(buf)?;
}
Ok(())
}
fn decode_field_8(
out: &mut Self,
buf: &mut &[u8],
version: i16,
_flex: bool,
) -> Result<(), ProtocolError> {
if version >= 0 {
out.partition_epoch = get_i32(buf)?;
}
Ok(())
}
fn decode_field_9(
out: &mut Self,
buf: &mut &[u8],
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if version >= 1 {
out.directories = {
let n = get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_uuid(buf)?);
}
v
};
}
Ok(())
}
fn decode_tagged_fields(
out: &mut Self,
buf: &mut &[u8],
version: i16,
flex: bool,
) -> Result<(), ProtocolError> {
if flex {
let mut tag_leader_recovery_state = None;
let mut tag_eligible_leader_replicas = None;
let mut tag_last_known_elr = None;
out.unknown_tagged_fields = read_tagged_fields(buf, |tag, payload| match tag {
0 => {
tag_leader_recovery_state = Some({
let b: &mut &[u8] = payload;
get_i8(b)?
});
Ok(true)
}
1 if version >= 2 => {
tag_eligible_leader_replicas = Some({
let b: &mut &[u8] = payload;
{
let opt = get_nullable_array_len(b, flex)?;
match opt {
None => None,
Some(n) => {
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(b)?);
}
Some(v)
}
}
}
});
Ok(true)
}
1 => Err(ProtocolError::TagNotValidForVersion { tag: 1, version }),
2 if version >= 2 => {
tag_last_known_elr = Some({
let b: &mut &[u8] = payload;
{
let opt = get_nullable_array_len(b, flex)?;
match opt {
None => None,
Some(n) => {
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(b)?);
}
Some(v)
}
}
}
});
Ok(true)
}
2 => Err(ProtocolError::TagNotValidForVersion { tag: 2, version }),
_ => Ok(false),
})?;
if let Some(v) = tag_leader_recovery_state {
out.leader_recovery_state = v;
}
if let Some(v) = tag_eligible_leader_replicas {
out.eligible_leader_replicas = v;
}
if let Some(v) = tag_last_known_elr {
out.last_known_elr = v;
}
}
Ok(())
}
}
impl Encode for PartitionRecord {
fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
if !(MIN_VERSION..=MAX_VERSION).contains(&version) {
return Err(ProtocolError::SchemaMismatch(
"PartitionRecord version out of range",
));
}
let flex = is_flexible(version);
self.encode_field_0(buf, version, flex);
self.encode_field_1(buf, version, flex);
self.encode_field_2(buf, version, flex)?;
self.encode_field_3(buf, version, flex)?;
self.encode_field_4(buf, version, flex)?;
self.encode_field_5(buf, version, flex)?;
self.encode_field_6(buf, version, flex);
self.encode_field_7(buf, version, flex);
self.encode_field_8(buf, version, flex);
self.encode_field_9(buf, version, flex)?;
self.encode_tagged_fields(buf, version, flex)?;
Ok(())
}
fn encoded_len(&self, version: i16) -> usize {
let flex = is_flexible(version);
let mut n: usize = 0;
if version >= 0 {
n += 4;
}
if version >= 0 {
n += 16;
}
if version >= 0 {
n += {
let prefix = array_len_prefix_len((self.replicas).len(), flex);
let body: usize = (self.replicas).iter().map(|_| 4).sum();
prefix + body
};
}
if version >= 0 {
n += {
let prefix = array_len_prefix_len((self.isr).len(), flex);
let body: usize = (self.isr).iter().map(|_| 4).sum();
prefix + body
};
}
if version >= 0 {
n += {
let prefix = array_len_prefix_len((self.removing_replicas).len(), flex);
let body: usize = (self.removing_replicas).iter().map(|_| 4).sum();
prefix + body
};
}
if version >= 0 {
n += {
let prefix = array_len_prefix_len((self.adding_replicas).len(), flex);
let body: usize = (self.adding_replicas).iter().map(|_| 4).sum();
prefix + body
};
}
if version >= 0 {
n += 4;
}
if version >= 0 {
n += 4;
}
if version >= 0 {
n += 4;
}
if version >= 1 {
n += {
let prefix = array_len_prefix_len((self.directories).len(), flex);
let body: usize = (self.directories).iter().map(|_| 16).sum();
prefix + body
};
}
if flex {
let mut known_pairs: Vec<(u32, usize)> = Vec::new();
if self.leader_recovery_state != 0i8 {
known_pairs.push((0, 1));
}
if version >= 2 && self.eligible_leader_replicas.is_some() {
known_pairs.push((1, {
let opt: Option<&Vec<_>> = (self.eligible_leader_replicas).as_ref();
let prefix = nullable_array_len_prefix_len(opt.map(Vec::len), flex);
let body: usize = opt.map_or(0, |v| v.iter().map(|_| 4).sum());
prefix + body
}));
}
if version >= 2 && self.last_known_elr.is_some() {
known_pairs.push((2, {
let opt: Option<&Vec<_>> = (self.last_known_elr).as_ref();
let prefix = nullable_array_len_prefix_len(opt.map(Vec::len), flex);
let body: usize = opt.map_or(0, |v| v.iter().map(|_| 4).sum());
prefix + body
}));
}
n += tagged_fields_len(&known_pairs, &self.unknown_tagged_fields);
}
n
}
}
impl<'de> DecodeBorrow<'de> for PartitionRecord {
fn decode_borrow(buf: &mut &'de [u8], version: i16) -> Result<Self, ProtocolError> {
if !(MIN_VERSION..=MAX_VERSION).contains(&version) {
return Err(ProtocolError::SchemaMismatch(
"PartitionRecord version out of range",
));
}
let flex = is_flexible(version);
let mut out = Self::default();
Self::decode_field_0(&mut out, buf, version, flex)?;
Self::decode_field_1(&mut out, buf, version, flex)?;
Self::decode_field_2(&mut out, buf, version, flex)?;
Self::decode_field_3(&mut out, buf, version, flex)?;
Self::decode_field_4(&mut out, buf, version, flex)?;
Self::decode_field_5(&mut out, buf, version, flex)?;
Self::decode_field_6(&mut out, buf, version, flex)?;
Self::decode_field_7(&mut out, buf, version, flex)?;
Self::decode_field_8(&mut out, buf, version, flex)?;
Self::decode_field_9(&mut out, buf, version, flex)?;
Self::decode_tagged_fields(&mut out, buf, version, flex)?;
Ok(out)
}
}
#[cfg(test)]
impl PartitionRecord {
#[must_use]
pub fn populated(version: i16) -> Self {
let mut m = Self::default();
if version >= 0 {
m.partition_id = 1i32;
}
if version >= 0 {
m.topic_id = Uuid([1u8; 16]);
}
if version >= 0 {
m.replicas = vec![1i32];
}
if version >= 0 {
m.isr = vec![1i32];
}
if version >= 0 {
m.removing_replicas = vec![1i32];
}
if version >= 0 {
m.adding_replicas = vec![1i32];
}
if version >= 0 {
m.leader = 1i32;
}
if version >= 0 {
m.leader_epoch = 1i32;
}
if version >= 0 {
m.partition_epoch = 1i32;
}
if version >= 1 {
m.directories = vec![Uuid([1u8; 16])];
}
if version >= 0 {
m.leader_recovery_state = 1i8;
}
if version >= 2 {
m.eligible_leader_replicas = Some(vec![1i32]);
}
if version >= 2 {
m.last_known_elr = Some(vec![1i32]);
}
m
}
}