crabka-protocol 0.3.3

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

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

use crate::primitives::string_bytes::{
    compact_string_len, put_compact_string, put_string, string_len,
};
use crate::primitives::string_bytes_borrowed::{get_compact_string_borrowed, get_string_borrowed};
use crate::tagged_fields::{WriteTaggedFields, read_tagged_fields, tagged_fields_len};
use crate::{DecodeBorrow, Encode, ProtocolError, UnknownTaggedFields};
use bytes::BufMut;

pub const API_KEY: i16 = 18;
pub const MIN_VERSION: i16 = 0;
pub const MAX_VERSION: i16 = 4;
pub const FLEXIBLE_MIN: i16 = 3;

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

#[derive(Debug, Clone, PartialEq, Eq, Default)]
pub struct ApiVersionsRequest<'a> {
    pub client_software_name: &'a str,
    pub client_software_version: &'a str,
    pub unknown_tagged_fields: UnknownTaggedFields,
}
impl ApiVersionsRequest<'_> {
    pub fn to_owned(&self) -> crate::owned::api_versions_request::ApiVersionsRequest {
        crate::owned::api_versions_request::ApiVersionsRequest {
            client_software_name: (self.client_software_name).to_string(),
            client_software_version: (self.client_software_version).to_string(),
            unknown_tagged_fields: self.unknown_tagged_fields.clone(),
        }
    }
}
impl Encode for ApiVersionsRequest<'_> {
    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 {
            if flex {
                put_compact_string(buf, self.client_software_name);
            } else {
                put_string(buf, self.client_software_name);
            }
        }
        if version >= 3 {
            if flex {
                put_compact_string(buf, self.client_software_version);
            } else {
                put_string(buf, self.client_software_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 >= 3 {
            n += if flex {
                compact_string_len(self.client_software_name)
            } else {
                string_len(self.client_software_name)
            };
        }
        if version >= 3 {
            n += if flex {
                compact_string_len(self.client_software_version)
            } else {
                string_len(self.client_software_version)
            };
        }
        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 ApiVersionsRequest<'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.client_software_name = if flex {
                get_compact_string_borrowed(buf)?
            } else {
                get_string_borrowed(buf)?
            };
        }
        if version >= 3 {
            out.client_software_version = 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)
    }
}
#[cfg(test)]
impl ApiVersionsRequest<'_> {
    #[must_use]
    pub fn populated(version: i16) -> Self {
        let mut m = Self::default();
        if version >= 3 {
            m.client_software_name = "x";
        }
        if version >= 3 {
            m.client_software_version = "x";
        }
        m
    }
}