crabka-protocol 0.1.2

Apache Kafka wire-protocol codec (4.3.0), with typed RecordBatch and zero-copy borrowed decode
Documentation 
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// AUTO-GENERATED by crabka-protocol-codegen against a9ce3221537b8653448750697915607dc7936cf3. Do not edit.

use bytes::{Buf, BufMut};

use crate::primitives::fixed::{get_i32, get_i64, get_i8, put_i32, put_i64, put_i8};
use crate::primitives::string_bytes::{
    compact_string_len, get_compact_string_owned, get_string_owned,
    put_compact_string, put_string, string_len,
};
use crate::tagged_fields::{read_tagged_fields, tagged_fields_len, WriteTaggedFields};
use crate::{Decode, Encode, ProtocolError, UnknownTaggedFields};

pub const API_KEY: i16 = 2;
pub const MIN_VERSION: i16 = 1;
pub const MAX_VERSION: i16 = 11;
pub const FLEXIBLE_MIN: i16 = 6;

#[inline]
fn is_flexible(version: i16) -> bool { version >= FLEXIBLE_MIN }

#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct ListOffsetsRequest {
    pub replica_id: i32,
    pub isolation_level: i8,
    pub topics: Vec<ListOffsetsTopic>,
    pub timeout_ms: i32,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl Encode for ListOffsetsRequest {
    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 { put_i32(buf, self.replica_id) }
        if version >= 2 { put_i8(buf, self.isolation_level) }
        if version >= 0 { { crate::primitives::array::put_array_len(buf, (self.topics).len(), flex); for it in &self.topics { it.encode(buf, version)?; } } }
        if version >= 10 { put_i32(buf, self.timeout_ms) }
        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 += 4; }
        if version >= 2 { n += 1; }
        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 version >= 10 { 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> Decode<'de> for ListOffsetsRequest {
    fn decode<B: Buf>(buf: &mut B, 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.replica_id = get_i32(buf)?; }
        if version >= 2 { out.isolation_level = get_i8(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(ListOffsetsTopic::decode(buf, version)?); } v }; }
        if version >= 10 { out.timeout_ms = get_i32(buf)?; }
        if flex {
            out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| {
                Ok(false)
            })?;
        }
        Ok(out)
    }
}

#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct ListOffsetsTopic {
    pub name: String,
    pub partitions: Vec<ListOffsetsPartition>,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl Encode for ListOffsetsTopic {
    fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
        let flex = version >= 6;
        if version >= 0 { if flex { put_compact_string(buf, &self.name) } else { put_string(buf, &self.name) } }
        if version >= 0 { { crate::primitives::array::put_array_len(buf, (self.partitions).len(), flex); for it in &self.partitions { it.encode(buf, version)?; } } }
        if flex {
            let tagged = WriteTaggedFields::new();
            tagged.write(buf, &self.unknown_tagged_fields);
        }
        Ok(())
    }
    fn encoded_len(&self, version: i16) -> usize {
        let flex = version >= 6;
        let mut n: usize = 0;
        if version >= 0 { n += if flex { compact_string_len(&self.name) } else { string_len(&self.name) }; }
        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 flex {
            let known_pairs: Vec<(u32, usize)> = Vec::new();
            n += tagged_fields_len(&known_pairs, &self.unknown_tagged_fields);
        }
        n
    }
}

impl<'de> Decode<'de> for ListOffsetsTopic {
    fn decode<B: Buf>(buf: &mut B, version: i16) -> Result<Self, ProtocolError> {
        let flex = version >= 6;
        let mut out = Self::default();
        if version >= 0 { out.name = if flex { get_compact_string_owned(buf)? } else { get_string_owned(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(ListOffsetsPartition::decode(buf, version)?); } v }; }
        if flex {
            out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| {
                Ok(false)
            })?;
        }
        Ok(out)
    }
}

#[derive(Debug, Clone, PartialEq, Eq)]
pub struct ListOffsetsPartition {
    pub partition_index: i32,
    pub current_leader_epoch: i32,
    pub timestamp: i64,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl Default for ListOffsetsPartition {
    fn default() -> Self {
        Self {
            partition_index: 0i32,
            current_leader_epoch: -1i32,
            timestamp: 0i64,
            unknown_tagged_fields: Default::default(),
        }
    }
}

impl Encode for ListOffsetsPartition {
    fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
        let flex = version >= 6;
        if version >= 0 { put_i32(buf, self.partition_index) }
        if version >= 4 { put_i32(buf, self.current_leader_epoch) }
        if version >= 0 { put_i64(buf, self.timestamp) }
        if flex {
            let tagged = WriteTaggedFields::new();
            tagged.write(buf, &self.unknown_tagged_fields);
        }
        Ok(())
    }
    fn encoded_len(&self, version: i16) -> usize {
        let flex = version >= 6;
        let mut n: usize = 0;
        if version >= 0 { n += 4; }
        if version >= 4 { n += 4; }
        if version >= 0 { n += 8; }
        if flex {
            let known_pairs: Vec<(u32, usize)> = Vec::new();
            n += tagged_fields_len(&known_pairs, &self.unknown_tagged_fields);
        }
        n
    }
}

impl<'de> Decode<'de> for ListOffsetsPartition {
    fn decode<B: Buf>(buf: &mut B, version: i16) -> Result<Self, ProtocolError> {
        let flex = version >= 6;
        let mut out = Self::default();
        if version >= 0 { out.partition_index = get_i32(buf)?; }
        if version >= 4 { out.current_leader_epoch = get_i32(buf)?; }
        if version >= 0 { out.timestamp = get_i64(buf)?; }
        if flex {
            out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| {
                Ok(false)
            })?;
        }
        Ok(out)
    }
}

/// Default JSON payload matching `Self::default()` for JVM oracle differential testing.
/// Only includes fields valid for the given version.
#[must_use]
#[allow(unused_comparisons)]
pub fn default_json(version: i16) -> ::serde_json::Value {
    let mut obj = ::serde_json::Map::new();
    obj.insert("replicaId".to_string(), ::serde_json::json!(0));
    if version >= 2 {
        obj.insert("isolationLevel".to_string(), ::serde_json::json!(0));
    }
    obj.insert("topics".to_string(), ::serde_json::Value::Array(vec![]));
    if version >= 10 {
        obj.insert("timeoutMs".to_string(), ::serde_json::json!(0));
    }
    ::serde_json::Value::Object(obj)
}

impl crate::ProtocolRequest for ListOffsetsRequest {
    const API_KEY: i16 = API_KEY;
    const MIN_VERSION: i16 = MIN_VERSION;
    const MAX_VERSION: i16 = MAX_VERSION;
    const FLEXIBLE_MIN: i16 = FLEXIBLE_MIN;
    type Response = super::list_offsets_response::ListOffsetsResponse;
}