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_bool, put_bool};
use crate::primitives::string_bytes::{
    compact_nullable_string_len, compact_string_len, get_compact_nullable_string_owned,
    get_compact_string_owned, get_nullable_string_owned, get_string_owned, nullable_string_len,
    put_compact_nullable_string, put_compact_string, put_nullable_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 = 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 MetadataRequest {
    pub topics: Option<Vec<MetadataRequestTopic>>,
    pub allow_auto_topic_creation: bool,
    pub include_cluster_authorized_operations: bool,
    pub include_topic_authorized_operations: bool,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl Default for MetadataRequest {
    fn default() -> Self {
        Self {
            topics: None,
            allow_auto_topic_creation: true,
            include_cluster_authorized_operations: false,
            include_topic_authorized_operations: false,
            unknown_tagged_fields: Default::default(),
        }
    }
}

impl Encode for MetadataRequest {
    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 version >= 1 { { let len = (self.topics).as_ref().map(Vec::len); crate::primitives::array::put_nullable_array_len(buf, len, flex); if let Some(v) = &self.topics { for it in v { it.encode(buf, version)?; } } } } else { { let v = (self.topics).as_ref().map(Vec::as_slice).unwrap_or(&[]); crate::primitives::array::put_array_len(buf, v.len(), flex); for it in v { it.encode(buf, version)?; } } } }
        if version >= 4 { put_bool(buf, self.allow_auto_topic_creation) }
        if version >= 8 && version <= 10 { put_bool(buf, self.include_cluster_authorized_operations) }
        if version >= 8 { put_bool(buf, self.include_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 = is_flexible(version);
        let mut n: usize = 0;
        if version >= 0 { n += if version >= 1 { { let opt: Option<&Vec<_>> = (self.topics).as_ref(); let prefix = crate::primitives::array::nullable_array_len_prefix_len(opt.map(|v| v.len()), flex); let body: usize = opt.map_or(0, |v| v.iter().map(|it| it.encoded_len(version)).sum()); prefix + body } } else { { let v = (self.topics).as_ref().map(Vec::as_slice).unwrap_or(&[]); let prefix = crate::primitives::array::array_len_prefix_len(v.len(), flex); let body: usize = v.iter().map(|it| it.encoded_len(version)).sum(); prefix + body } }; }
        if version >= 4 { n += 1; }
        if version >= 8 && version <= 10 { n += 1; }
        if version >= 8 { n += 1; }
        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 MetadataRequest {
    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.topics = if version >= 1 { { let opt = crate::primitives::array::get_nullable_array_len(buf, flex)?; match opt { None => None, Some(n) => { let mut v = Vec::with_capacity(n); for _ in 0..n { v.push(MetadataRequestTopic::decode(buf, version)?); } Some(v) } } } } else { Some({ let n = crate::primitives::array::get_array_len(buf, flex)?; let mut v = Vec::with_capacity(n); for _ in 0..n { v.push(MetadataRequestTopic::decode(buf, version)?); } v }) }; }
        if version >= 4 { out.allow_auto_topic_creation = get_bool(buf)?; }
        if version >= 8 && version <= 10 { out.include_cluster_authorized_operations = get_bool(buf)?; }
        if version >= 8 { out.include_topic_authorized_operations = get_bool(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 MetadataRequestTopic {
    pub topic_id: crate::primitives::uuid::Uuid,
    pub name: Option<String>,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl Encode for MetadataRequestTopic {
    fn encode<B: BufMut>(&self, buf: &mut B, version: i16) -> Result<(), ProtocolError> {
        let flex = version >= 9;
        if version >= 10 { crate::primitives::uuid::put_uuid(buf, self.topic_id) }
        if version >= 0 { if version >= 10 { if flex { put_compact_nullable_string(buf, self.name.as_deref()) } else { put_nullable_string(buf, self.name.as_deref()) } } else { if flex { put_compact_string(buf, (self.name).as_deref().unwrap_or("")) } else { put_string(buf, (self.name).as_deref().unwrap_or("")) } } }
        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 >= 10 { n += 16; }
        if version >= 0 { n += if version >= 10 { if flex { compact_nullable_string_len(self.name.as_deref()) } else { nullable_string_len(self.name.as_deref()) } } else { if flex { compact_string_len((self.name).as_deref().unwrap_or("")) } else { string_len((self.name).as_deref().unwrap_or("")) } }; }
        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 MetadataRequestTopic {
    fn decode<B: Buf>(buf: &mut B, version: i16) -> Result<Self, ProtocolError> {
        let flex = version >= 9;
        let mut out = Self::default();
        if version >= 10 { out.topic_id = crate::primitives::uuid::get_uuid(buf)?; }
        if version >= 0 { out.name = if version >= 10 { if flex { get_compact_nullable_string_owned(buf)? } else { get_nullable_string_owned(buf)? } } else { Some(if flex { get_compact_string_owned(buf)? } else { get_string_owned(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("topics".to_string(), if version >= 1 { ::serde_json::Value::Null } else { ::serde_json::Value::Array(vec![]) });
    if version >= 4 {
        obj.insert("allowAutoTopicCreation".to_string(), ::serde_json::Value::Bool(true));
    }
    if version >= 8 && version <= 10 {
        obj.insert("includeClusterAuthorizedOperations".to_string(), ::serde_json::Value::Bool(false));
    }
    if version >= 8 {
        obj.insert("includeTopicAuthorizedOperations".to_string(), ::serde_json::Value::Bool(false));
    }
    ::serde_json::Value::Object(obj)
}

impl crate::ProtocolRequest for MetadataRequest {
    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::metadata_response::MetadataResponse;
}