use bytes::BufMut;
use crate::primitives::fixed::{get_bool, get_i16, get_i32, put_bool, put_i16, put_i32};
use crate::primitives::string_bytes::{
compact_nullable_string_len, compact_string_len, nullable_string_len,
put_compact_nullable_string, put_compact_string, put_nullable_string, put_string, string_len,
};
use crate::primitives::string_bytes_borrowed::{
get_compact_nullable_string_borrowed, get_compact_string_borrowed,
get_nullable_string_borrowed, get_string_borrowed,
};
use crate::tagged_fields::{WriteTaggedFields, read_tagged_fields, tagged_fields_len};
use crate::{DecodeBorrow, Encode, ProtocolError, UnknownTaggedFields};
pub const API_KEY: i16 = 3;
pub const MIN_VERSION: i16 = 0;
pub const MAX_VERSION: i16 = 13;
pub const FLEXIBLE_MIN: i16 = 9;
#[inline]
fn is_flexible(version: i16) -> bool {
version >= FLEXIBLE_MIN
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MetadataResponse<'a> {
pub throttle_time_ms: i32,
pub brokers: Vec<MetadataResponseBroker<'a>>,
pub cluster_id: Option<&'a str>,
pub controller_id: i32,
pub topics: Vec<MetadataResponseTopic<'a>>,
pub cluster_authorized_operations: i32,
pub error_code: i16,
pub unknown_tagged_fields: UnknownTaggedFields,
}
impl Default for MetadataResponse<'_> {
fn default() -> Self {
Self {
throttle_time_ms: 0i32,
brokers: Vec::new(),
cluster_id: None,
controller_id: -1i32,
topics: Vec::new(),
cluster_authorized_operations: -2_147_483_648i32,
error_code: 0i16,
unknown_tagged_fields: Default::default(),
}
}
}
impl MetadataResponse<'_> {
pub fn to_owned(&self) -> crate::owned::metadata_response::MetadataResponse {
crate::owned::metadata_response::MetadataResponse {
throttle_time_ms: (self.throttle_time_ms),
brokers: (self.brokers)
.iter()
.map(MetadataResponseBroker::to_owned)
.collect(),
cluster_id: (self.cluster_id).map(std::string::ToString::to_string),
controller_id: (self.controller_id),
topics: (self.topics)
.iter()
.map(MetadataResponseTopic::to_owned)
.collect(),
cluster_authorized_operations: (self.cluster_authorized_operations),
error_code: (self.error_code),
unknown_tagged_fields: self.unknown_tagged_fields.clone(),
}
}
}
impl Encode for MetadataResponse<'_> {
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 >= 3 {
put_i32(buf, self.throttle_time_ms);
}
if version >= 0 {
{
crate::primitives::array::put_array_len(buf, (self.brokers).len(), flex);
for it in &self.brokers {
it.encode(buf, version)?;
}
}
}
if version >= 2 {
if flex {
put_compact_nullable_string(buf, self.cluster_id);
} else {
put_nullable_string(buf, self.cluster_id);
}
}
if version >= 1 {
put_i32(buf, self.controller_id);
}
if version >= 0 {
{
crate::primitives::array::put_array_len(buf, (self.topics).len(), flex);
for it in &self.topics {
it.encode(buf, version)?;
}
}
}
if (8..=10).contains(&version) {
put_i32(buf, self.cluster_authorized_operations);
}
if version >= 13 {
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 >= 3 {
n += 4;
}
if version >= 0 {
n += {
let prefix =
crate::primitives::array::array_len_prefix_len((self.brokers).len(), flex);
let body: usize = (self.brokers)
.iter()
.map(|it| it.encoded_len(version))
.sum();
prefix + body
};
}
if version >= 2 {
n += if flex {
compact_nullable_string_len(self.cluster_id)
} else {
nullable_string_len(self.cluster_id)
};
}
if version >= 1 {
n += 4;
}
if version >= 0 {
n += {
let prefix =
crate::primitives::array::array_len_prefix_len((self.topics).len(), flex);
let body: usize = (self.topics).iter().map(|it| it.encoded_len(version)).sum();
prefix + body
};
}
if (8..=10).contains(&version) {
n += 4;
}
if version >= 13 {
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 MetadataResponse<'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 >= 3 {
out.throttle_time_ms = get_i32(buf)?;
}
if version >= 0 {
out.brokers = {
let n = crate::primitives::array::get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(MetadataResponseBroker::decode_borrow(buf, version)?);
}
v
};
}
if version >= 2 {
out.cluster_id = if flex {
get_compact_nullable_string_borrowed(buf)?
} else {
get_nullable_string_borrowed(buf)?
};
}
if version >= 1 {
out.controller_id = get_i32(buf)?;
}
if version >= 0 {
out.topics = {
let n = crate::primitives::array::get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(MetadataResponseTopic::decode_borrow(buf, version)?);
}
v
};
}
if (8..=10).contains(&version) {
out.cluster_authorized_operations = get_i32(buf)?;
}
if version >= 13 {
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 MetadataResponse<'_> {
#[must_use]
pub fn populated(version: i16) -> Self {
let mut m = Self::default();
if version >= 3 {
m.throttle_time_ms = 1i32;
}
if version >= 0 {
m.brokers = vec![MetadataResponseBroker::populated(version)];
}
if version >= 2 {
m.cluster_id = Some("x");
}
if version >= 1 {
m.controller_id = 1i32;
}
if version >= 0 {
m.topics = vec![MetadataResponseTopic::populated(version)];
}
if (8..=10).contains(&version) {
m.cluster_authorized_operations = 1i32;
}
if version >= 13 {
m.error_code = 1i16;
}
m
}
}
#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct MetadataResponseBroker<'a> {
pub node_id: i32,
pub host: &'a str,
pub port: i32,
pub rack: Option<&'a str>,
pub unknown_tagged_fields: UnknownTaggedFields,
}
impl MetadataResponseBroker<'_> {
pub fn to_owned(&self) -> crate::owned::metadata_response::MetadataResponseBroker {
crate::owned::metadata_response::MetadataResponseBroker {
node_id: (self.node_id),
host: (self.host).to_string(),
port: (self.port),
rack: (self.rack).map(std::string::ToString::to_string),
unknown_tagged_fields: self.unknown_tagged_fields.clone(),
}
}
}
impl Encode for MetadataResponseBroker<'_> {
fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
let flex = version >= 9;
if version >= 0 {
put_i32(buf, self.node_id);
}
if version >= 0 {
if flex {
put_compact_string(buf, self.host);
} else {
put_string(buf, self.host);
}
}
if version >= 0 {
put_i32(buf, self.port);
}
if version >= 1 {
if flex {
put_compact_nullable_string(buf, self.rack);
} else {
put_nullable_string(buf, self.rack);
}
}
if flex {
let tagged = WriteTaggedFields::new();
tagged.write(buf, &self.unknown_tagged_fields);
}
Ok(())
}
fn encoded_len(&self, version: i16) -> usize {
let flex = version >= 9;
let mut n: usize = 0;
if version >= 0 {
n += 4;
}
if version >= 0 {
n += if flex {
compact_string_len(self.host)
} else {
string_len(self.host)
};
}
if version >= 0 {
n += 4;
}
if version >= 1 {
n += if flex {
compact_nullable_string_len(self.rack)
} else {
nullable_string_len(self.rack)
};
}
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 MetadataResponseBroker<'de> {
fn decode_borrow(buf: &mut &'de [u8], version: i16) -> Result<Self, ProtocolError> {
let flex = version >= 9;
let mut out = Self::default();
if version >= 0 {
out.node_id = get_i32(buf)?;
}
if version >= 0 {
out.host = if flex {
get_compact_string_borrowed(buf)?
} else {
get_string_borrowed(buf)?
};
}
if version >= 0 {
out.port = get_i32(buf)?;
}
if version >= 1 {
out.rack = if flex {
get_compact_nullable_string_borrowed(buf)?
} else {
get_nullable_string_borrowed(buf)?
};
}
if flex {
out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| Ok(false))?;
}
Ok(out)
}
}
#[cfg(test)]
impl MetadataResponseBroker<'_> {
#[must_use]
pub fn populated(version: i16) -> Self {
let mut m = Self::default();
if version >= 0 {
m.node_id = 1i32;
}
if version >= 0 {
m.host = "x";
}
if version >= 0 {
m.port = 1i32;
}
if version >= 1 {
m.rack = Some("x");
}
m
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MetadataResponseTopic<'a> {
pub error_code: i16,
pub name: Option<&'a str>,
pub topic_id: crate::primitives::uuid::Uuid,
pub is_internal: bool,
pub partitions: Vec<MetadataResponsePartition>,
pub topic_authorized_operations: i32,
pub unknown_tagged_fields: UnknownTaggedFields,
}
impl Default for MetadataResponseTopic<'_> {
fn default() -> Self {
Self {
error_code: 0i16,
name: None,
topic_id: Default::default(),
is_internal: false,
partitions: Vec::new(),
topic_authorized_operations: -2_147_483_648i32,
unknown_tagged_fields: Default::default(),
}
}
}
impl MetadataResponseTopic<'_> {
pub fn to_owned(&self) -> crate::owned::metadata_response::MetadataResponseTopic {
crate::owned::metadata_response::MetadataResponseTopic {
error_code: (self.error_code),
name: (self.name).map(std::string::ToString::to_string),
topic_id: (self.topic_id),
is_internal: (self.is_internal),
partitions: (self.partitions)
.iter()
.map(MetadataResponsePartition::to_owned)
.collect(),
topic_authorized_operations: (self.topic_authorized_operations),
unknown_tagged_fields: self.unknown_tagged_fields.clone(),
}
}
}
impl Encode for MetadataResponseTopic<'_> {
fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
let flex = version >= 9;
if version >= 0 {
put_i16(buf, self.error_code);
}
if version >= 0 {
if version >= 12 {
if flex {
put_compact_nullable_string(buf, self.name);
} else {
put_nullable_string(buf, self.name);
}
} else {
if flex {
put_compact_string(buf, (self.name).unwrap_or(""));
} else {
put_string(buf, (self.name).unwrap_or(""));
}
}
}
if version >= 10 {
crate::primitives::uuid::put_uuid(buf, self.topic_id);
}
if version >= 1 {
put_bool(buf, self.is_internal);
}
if version >= 0 {
{
crate::primitives::array::put_array_len(buf, (self.partitions).len(), flex);
for it in &self.partitions {
it.encode(buf, version)?;
}
}
}
if version >= 8 {
put_i32(buf, self.topic_authorized_operations);
}
if flex {
let tagged = WriteTaggedFields::new();
tagged.write(buf, &self.unknown_tagged_fields);
}
Ok(())
}
fn encoded_len(&self, version: i16) -> usize {
let flex = version >= 9;
let mut n: usize = 0;
if version >= 0 {
n += 2;
}
if version >= 0 {
n += if version >= 12 {
if flex {
compact_nullable_string_len(self.name)
} else {
nullable_string_len(self.name)
}
} else {
if flex {
compact_string_len((self.name).unwrap_or(""))
} else {
string_len((self.name).unwrap_or(""))
}
};
}
if version >= 10 {
n += 16;
}
if version >= 1 {
n += 1;
}
if version >= 0 {
n += {
let prefix =
crate::primitives::array::array_len_prefix_len((self.partitions).len(), flex);
let body: usize = (self.partitions)
.iter()
.map(|it| it.encoded_len(version))
.sum();
prefix + body
};
}
if version >= 8 {
n += 4;
}
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 MetadataResponseTopic<'de> {
fn decode_borrow(buf: &mut &'de [u8], version: i16) -> Result<Self, ProtocolError> {
let flex = version >= 9;
let mut out = Self::default();
if version >= 0 {
out.error_code = get_i16(buf)?;
}
if version >= 0 {
out.name = if version >= 12 {
if flex {
get_compact_nullable_string_borrowed(buf)?
} else {
get_nullable_string_borrowed(buf)?
}
} else {
Some(if flex {
get_compact_string_borrowed(buf)?
} else {
get_string_borrowed(buf)?
})
};
}
if version >= 10 {
out.topic_id = crate::primitives::uuid::get_uuid(buf)?;
}
if version >= 1 {
out.is_internal = get_bool(buf)?;
}
if version >= 0 {
out.partitions = {
let n = crate::primitives::array::get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(MetadataResponsePartition::decode_borrow(buf, version)?);
}
v
};
}
if version >= 8 {
out.topic_authorized_operations = get_i32(buf)?;
}
if flex {
out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| Ok(false))?;
}
Ok(out)
}
}
#[cfg(test)]
impl MetadataResponseTopic<'_> {
#[must_use]
pub fn populated(version: i16) -> Self {
let mut m = Self::default();
if version >= 0 {
m.error_code = 1i16;
}
if version >= 0 {
m.name = Some("x");
}
if version >= 10 {
m.topic_id = crate::primitives::uuid::Uuid([1u8; 16]);
}
if version >= 1 {
m.is_internal = true;
}
if version >= 0 {
m.partitions = vec![MetadataResponsePartition::populated(version)];
}
if version >= 8 {
m.topic_authorized_operations = 1i32;
}
m
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
pub struct MetadataResponsePartition {
pub error_code: i16,
pub partition_index: i32,
pub leader_id: i32,
pub leader_epoch: i32,
pub replica_nodes: Vec<i32>,
pub isr_nodes: Vec<i32>,
pub offline_replicas: Vec<i32>,
pub unknown_tagged_fields: UnknownTaggedFields,
}
impl Default for MetadataResponsePartition {
fn default() -> Self {
Self {
error_code: 0i16,
partition_index: 0i32,
leader_id: 0i32,
leader_epoch: -1i32,
replica_nodes: Vec::new(),
isr_nodes: Vec::new(),
offline_replicas: Vec::new(),
unknown_tagged_fields: Default::default(),
}
}
}
impl MetadataResponsePartition {
pub fn to_owned(&self) -> crate::owned::metadata_response::MetadataResponsePartition {
crate::owned::metadata_response::MetadataResponsePartition {
error_code: (self.error_code),
partition_index: (self.partition_index),
leader_id: (self.leader_id),
leader_epoch: (self.leader_epoch),
replica_nodes: (self.replica_nodes).clone(),
isr_nodes: (self.isr_nodes).clone(),
offline_replicas: (self.offline_replicas).clone(),
unknown_tagged_fields: self.unknown_tagged_fields.clone(),
}
}
}
impl Encode for MetadataResponsePartition {
fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
let flex = version >= 9;
if version >= 0 {
put_i16(buf, self.error_code);
}
if version >= 0 {
put_i32(buf, self.partition_index);
}
if version >= 0 {
put_i32(buf, self.leader_id);
}
if version >= 7 {
put_i32(buf, self.leader_epoch);
}
if version >= 0 {
{
crate::primitives::array::put_array_len(buf, (self.replica_nodes).len(), flex);
for it in &self.replica_nodes {
put_i32(buf, *it);
}
}
}
if version >= 0 {
{
crate::primitives::array::put_array_len(buf, (self.isr_nodes).len(), flex);
for it in &self.isr_nodes {
put_i32(buf, *it);
}
}
}
if version >= 5 {
{
crate::primitives::array::put_array_len(buf, (self.offline_replicas).len(), flex);
for it in &self.offline_replicas {
put_i32(buf, *it);
}
}
}
if flex {
let tagged = WriteTaggedFields::new();
tagged.write(buf, &self.unknown_tagged_fields);
}
Ok(())
}
fn encoded_len(&self, version: i16) -> usize {
let flex = version >= 9;
let mut n: usize = 0;
if version >= 0 {
n += 2;
}
if version >= 0 {
n += 4;
}
if version >= 0 {
n += 4;
}
if version >= 7 {
n += 4;
}
if version >= 0 {
n += {
let prefix = crate::primitives::array::array_len_prefix_len(
(self.replica_nodes).len(),
flex,
);
let body: usize = (self.replica_nodes).iter().map(|_| 4).sum();
prefix + body
};
}
if version >= 0 {
n += {
let prefix =
crate::primitives::array::array_len_prefix_len((self.isr_nodes).len(), flex);
let body: usize = (self.isr_nodes).iter().map(|_| 4).sum();
prefix + body
};
}
if version >= 5 {
n += {
let prefix = crate::primitives::array::array_len_prefix_len(
(self.offline_replicas).len(),
flex,
);
let body: usize = (self.offline_replicas).iter().map(|_| 4).sum();
prefix + body
};
}
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 MetadataResponsePartition {
fn decode_borrow(buf: &mut &'de [u8], version: i16) -> Result<Self, ProtocolError> {
let flex = version >= 9;
let mut out = Self::default();
if version >= 0 {
out.error_code = get_i16(buf)?;
}
if version >= 0 {
out.partition_index = get_i32(buf)?;
}
if version >= 0 {
out.leader_id = get_i32(buf)?;
}
if version >= 7 {
out.leader_epoch = get_i32(buf)?;
}
if version >= 0 {
out.replica_nodes = {
let n = crate::primitives::array::get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(buf)?);
}
v
};
}
if version >= 0 {
out.isr_nodes = {
let n = crate::primitives::array::get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(buf)?);
}
v
};
}
if version >= 5 {
out.offline_replicas = {
let n = crate::primitives::array::get_array_len(buf, flex)?;
let mut v = Vec::with_capacity(n);
for _ in 0..n {
v.push(get_i32(buf)?);
}
v
};
}
if flex {
out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| Ok(false))?;
}
Ok(out)
}
}
#[cfg(test)]
impl MetadataResponsePartition {
#[must_use]
pub fn populated(version: i16) -> Self {
let mut m = Self::default();
if version >= 0 {
m.error_code = 1i16;
}
if version >= 0 {
m.partition_index = 1i32;
}
if version >= 0 {
m.leader_id = 1i32;
}
if version >= 7 {
m.leader_epoch = 1i32;
}
if version >= 0 {
m.replica_nodes = vec![1i32];
}
if version >= 0 {
m.isr_nodes = vec![1i32];
}
if version >= 5 {
m.offline_replicas = vec![1i32];
}
m
}
}