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_i16, get_i32, put_i16, put_i32};
use crate::tagged_fields::{read_tagged_fields, tagged_fields_len, WriteTaggedFields};
use crate::{Decode, Encode, ProtocolError, UnknownTaggedFields};
pub const MIN_VERSION: i16 = 0;
pub const MAX_VERSION: i16 = 1;
pub const FLEXIBLE_MIN: i16 = 0;

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

#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct LeaderChangeMessage {
    pub version: i16,
    pub leader_id: i32,
    pub voters: Vec<super::common::voter::Voter>,
    pub granting_voters: Vec<super::common::voter::Voter>,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl Encode for LeaderChangeMessage {
    fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
        if !(MIN_VERSION..=MAX_VERSION).contains(&version) {
            return Err(ProtocolError::SchemaMismatch("LeaderChangeMessage version out of range"));
        }
        let flex = is_flexible(version);
        if version >= 0 { put_i16(buf, self.version) }
        if version >= 0 { put_i32(buf, self.leader_id) }
        if version >= 0 { { crate::primitives::array::put_array_len(buf, (self.voters).len(), flex); for it in &self.voters { it.encode(buf, version)?; } } }
        if version >= 0 { { crate::primitives::array::put_array_len(buf, (self.granting_voters).len(), flex); for it in &self.granting_voters { 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 = is_flexible(version);
        let mut n: usize = 0;
        if version >= 0 { n += 2; }
        if version >= 0 { n += 4; }
        if version >= 0 { n += { let prefix = crate::primitives::array::array_len_prefix_len((self.voters).len(), flex); let body: usize = (self.voters).iter().map(|it| it.encoded_len(version)).sum(); prefix + body }; }
        if version >= 0 { n += { let prefix = crate::primitives::array::array_len_prefix_len((self.granting_voters).len(), flex); let body: usize = (self.granting_voters).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 LeaderChangeMessage {
    fn decode<B: Buf>(buf: &mut B, version: i16) -> Result<Self, ProtocolError> {
        if !(MIN_VERSION..=MAX_VERSION).contains(&version) {
            return Err(ProtocolError::SchemaMismatch("LeaderChangeMessage version out of range"));
        }
        let flex = is_flexible(version);
        let mut out = Self::default();
        if version >= 0 { out.version = get_i16(buf)?; }
        if version >= 0 { out.leader_id = get_i32(buf)?; }
        if version >= 0 { out.voters = { let n = crate::primitives::array::get_array_len(buf, flex)?; let mut v = Vec::with_capacity(n); for _ in 0..n { v.push(super::common::voter::Voter::decode(buf, version)?); } v }; }
        if version >= 0 { out.granting_voters = { let n = crate::primitives::array::get_array_len(buf, flex)?; let mut v = Vec::with_capacity(n); for _ in 0..n { v.push(super::common::voter::Voter::decode(buf, version)?); } v }; }
        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("version".to_string(), ::serde_json::json!(0));
    obj.insert("leaderId".to_string(), ::serde_json::json!(0));
    obj.insert("voters".to_string(), ::serde_json::Value::Array(vec![]));
    obj.insert("grantingVoters".to_string(), ::serde_json::Value::Array(vec![]));
    ::serde_json::Value::Object(obj)
}