ozzy-proto 0.7.0

Sans-I/O application protocol and message types for Ozzy.
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

use super::*;
use crate::GroupId;
use crate::{LinkSessionId, NodeId, RequestId, decode_packet};

fn envelope(opcode: Opcode) -> Envelope {
    Envelope {
        opcode,
        response: opcode == Opcode::ProducerOpened,
        request_id: Some(RequestId::from_bytes([4; 16])),
        sender: NodeId::from_bytes([5; 16]),
        session: Some(LinkSessionId::from_bytes([6; 16])),
    }
}

fn open() -> Open {
    Open {
        authority: Authority {
            group_id: GroupId::from_bytes([1; 16]),
            config_epoch: 1,
            view: 3,
        },
        partition: PartitionIncarnation::from_bytes([2; 16]),
        producer: ProducerId::from_bytes([3; 16]),
        mode: Mode::Resume,
        expected_epoch: None,
        operation: OperationId::from_bytes([7; 16]),
    }
}

fn packet<'a>(header: &'a [u8; ENVELOPE_BYTES], metadata: &'a [u8]) -> Packet<'a> {
    decode_packet(&[header, metadata, &[]], EnvelopeLimits::default()).unwrap()
}

#[test]
fn open_and_opened_round_trip() {
    let mut metadata = Vec::with_capacity(128);
    let limits = EnvelopeLimits::default();
    let request = open();
    let header = encode_open(
        envelope(Opcode::OpenProducer),
        request,
        &mut metadata,
        limits,
    )
    .unwrap();
    assert_eq!(metadata.len(), OPEN_BYTES);
    assert_eq!(decode_open(packet(&header, &metadata), limits), Ok(request));

    let mut fenced = request;
    fenced.mode = Mode::Fence;
    fenced.expected_epoch = Some(7);
    let header = encode_open(
        envelope(Opcode::OpenProducer),
        fenced,
        &mut metadata,
        limits,
    )
    .unwrap();
    assert_eq!(decode_open(packet(&header, &metadata), limits), Ok(fenced));

    let response = Opened {
        authority: request.authority,
        partition: request.partition,
        producer: request.producer,
        epoch: 8,
        next_sequence: 42,
        retry_floor: 21,
        policy: Policy::QuorumDurable,
    };
    let header = encode_opened(
        envelope(Opcode::ProducerOpened),
        response,
        &mut metadata,
        limits,
    )
    .unwrap();
    assert_eq!(metadata.len(), OPENED_BYTES);
    assert_eq!(
        decode_opened(packet(&header, &metadata), limits),
        Ok(response)
    );
}

#[test]
fn malformed_fences_and_unconfirmed_policy_fail_closed() {
    let mut metadata = Vec::with_capacity(128);
    let limits = EnvelopeLimits::default();
    let mut request = open();
    request.mode = Mode::Fence;
    assert_eq!(
        encode_open(
            envelope(Opcode::OpenProducer),
            request,
            &mut metadata,
            limits
        ),
        Err(CodecError::Identity)
    );
    request = open();
    request.operation = OperationId::from_bytes([0; 16]);
    assert_eq!(
        encode_open(
            envelope(Opcode::OpenProducer),
            request,
            &mut metadata,
            limits
        ),
        Err(CodecError::Identity)
    );
    let request = open();
    let header = encode_open(
        envelope(Opcode::OpenProducer),
        request,
        &mut metadata,
        limits,
    )
    .unwrap();
    metadata[65] = 9;
    assert_eq!(
        decode_open(packet(&header, &metadata), limits),
        Err(CodecError::Profile)
    );
    let response = Opened {
        authority: request.authority,
        partition: request.partition,
        producer: request.producer,
        epoch: 1,
        next_sequence: 2,
        retry_floor: 3,
        policy: Policy::LocalDurable,
    };
    assert_eq!(
        encode_opened(
            envelope(Opcode::ProducerOpened),
            response,
            &mut metadata,
            limits
        ),
        Err(CodecError::Profile)
    );
}