crabka-protocol 0.1.2

Apache Kafka wire-protocol codec (4.3.0), with typed RecordBatch and zero-copy borrowed decode
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

// AUTO-GENERATED by crabka-protocol-codegen against a9ce3221537b8653448750697915607dc7936cf3. Do not edit.

use bytes::BufMut;

use crate::primitives::fixed::{get_bool, put_bool};
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::{read_tagged_fields, tagged_fields_len, WriteTaggedFields};
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 MetadataRequest<'a> {
    pub topics: Option<Vec<MetadataRequestTopic<'a>>>,
    pub allow_auto_topic_creation: bool,
    pub include_cluster_authorized_operations: bool,
    pub include_topic_authorized_operations: bool,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl<'a> Default for MetadataRequest<'a> {
    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<'a> MetadataRequest<'a> {
    pub fn to_owned(&self) -> crate::owned::metadata_request::MetadataRequest {
        crate::owned::metadata_request::MetadataRequest {
            topics: (self.topics).as_ref().map(|v| v.iter().map(|it| it.to_owned()).collect()),
            allow_auto_topic_creation: (self.allow_auto_topic_creation),
            include_cluster_authorized_operations: (self.include_cluster_authorized_operations),
            include_topic_authorized_operations: (self.include_topic_authorized_operations),
            unknown_tagged_fields: self.unknown_tagged_fields.clone(),
        }
    }
}

impl<'a> Encode for MetadataRequest<'a> {
    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> DecodeBorrow<'de> for MetadataRequest<'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 >= 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_borrow(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_borrow(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)]
pub struct MetadataRequestTopic<'a> {
    pub topic_id: crate::primitives::uuid::Uuid,
    pub name: Option<&'a str>,
    pub unknown_tagged_fields: UnknownTaggedFields,
}

impl<'a> Default for MetadataRequestTopic<'a> {
    fn default() -> Self {
        Self {
            topic_id: Default::default(),
            name: None,
            unknown_tagged_fields: Default::default(),
        }
    }
}

impl<'a> MetadataRequestTopic<'a> {
    pub fn to_owned(&self) -> crate::owned::metadata_request::MetadataRequestTopic {
        crate::owned::metadata_request::MetadataRequestTopic {
            topic_id: (self.topic_id),
            name: (self.name).map(|s| s.to_string()),
            unknown_tagged_fields: self.unknown_tagged_fields.clone(),
        }
    }
}

impl<'a> Encode for MetadataRequestTopic<'a> {
    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) } 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 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) } else { nullable_string_len(self.name) } } else { if flex { compact_string_len((self.name).unwrap_or("")) } else { string_len((self.name).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> DecodeBorrow<'de> for MetadataRequestTopic<'de> {
    fn decode_borrow(buf: &mut &'de [u8], 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_borrowed(buf)? } else { get_nullable_string_borrowed(buf)? } } else { Some(if flex { get_compact_string_borrowed(buf)? } else { get_string_borrowed(buf)? }) }; }
        if flex {
            out.unknown_tagged_fields = read_tagged_fields(buf, |_tag, _payload| {
                Ok(false)
            })?;
        }
        Ok(out)
    }
}