kf-protocol 2.0.3

Native Rust implementation of kafka protocol
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

use std::io::Cursor;

use kf_protocol::derive::Decode;
use kf_protocol::derive::Encode;
use kf_protocol::derive::KfDefault;
use kf_protocol::derive::RequestApi;
use kf_protocol::Decoder;
use kf_protocol::Encoder;
use kf_protocol::api::Request;
    
#[derive(Encode,Decode,KfDefault,RequestApi,Debug)]
#[fluvio_kf(api_min_version = 5, api_max_version = 6, api_key = 10, response = "TestResponse")]
pub struct TestRequest {
    pub value: i8,

    #[fluvio_kf(min_version = 1,max_version = 1)]
    pub value2: i8,

    #[fluvio_kf(min_version = 1, default = "-1")]
    pub value3: i8
}

#[derive(Encode,Decode,KfDefault,Debug)]
pub struct TestResponse {
    pub value: i8,

    #[fluvio_kf(min_version = 1,max_version = 1)]
    pub value2: i8,
    
    #[fluvio_kf(min_version = 1)]
    pub value3: i8
}



#[derive(Encode, Decode, KfDefault, Debug)]
pub struct KfMetadataResponse {
    

    #[fluvio_kf(min_version = 2)]
    pub cluster_id: Option<String>,

}




struct RandomStruct {

}

impl RandomStruct {

    pub fn _type(&self) -> bool {
        true
    }
}


#[test]
fn test_metadata() {
    let d = KfMetadataResponse::default();
    assert_eq!(d.cluster_id,None);
}

#[test]
fn test_type() {
    let r = RandomStruct{};
    assert_eq!(r._type(),true);
}

#[test]
fn test_derive_api_version() {

    let mut record = TestRequest::default();
    record.value2 = 10;
    record.value3 = 5;

    // version 0 should only encode value
    let mut dest = vec![];
    record.encode(&mut dest,0).expect("encode");
    assert_eq!(dest.len(),1);

    // version 1 should encode value1,value2,value3
    let mut dest = vec![];
    record.encode(&mut dest,1).expect("encode");
    assert_eq!(dest.len(),3);

    // version 3 should only encode value, value3
    let mut dest = vec![];
    record.encode(&mut dest,2).expect("encode");
    assert_eq!(dest.len(),2);
    assert_eq!(dest[1],5);  
}

#[test]
fn test_api_request() {
    assert_eq!(TestRequest::API_KEY,10);
    assert_eq!(TestRequest::MIN_API_VERSION,5);
    assert_eq!(TestRequest::MAX_API_VERSION,6);
}

#[test]
fn test_api_getter() {
    let mut record = TestRequest::default();
  
    record.value2 = 10;
    assert_eq!(record.value2,10);

    
}


#[test]
fn test_decode_version() {

    // version 0 record
    let data = [0x08];
    let record = TestRequest::decode_from(&mut Cursor::new(&data),0).expect("decode");
    assert_eq!(record.value,8);
    assert_eq!(record.value2,0);    // default

    let data = [0x08];
    assert!(TestRequest::decode_from(&mut Cursor::new(&data),1).is_err(),"version 1 needs 3 bytes"); 

    let data = [0x08,0x01,0x05];
    let record = TestRequest::decode_from(&mut Cursor::new(&data),1).expect("decode");
    assert_eq!(record.value,8);
    assert_eq!(record.value2,1);    
    assert_eq!(record.value3,5);   

    let data = [0x08,0x01,0x05];
    let record = TestRequest::decode_from(&mut Cursor::new(&data),3).expect("decode");
    assert_eq!(record.value,8);
    assert_eq!(record.value2,0);   
    assert_eq!(record.value3,1);    // default, didn't consume

}