aldrin-core 0.13.0

Shared core components of Aldrin, a message bus for service-oriented RPC and interprocess communication.
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

use super::message_ops::Sealed;
use super::{
    Message, MessageDeserializeError, MessageKind, MessageOps, MessageSerializeError,
    MessageSerializer, MessageWithoutValueDeserializer,
};
use crate::{SerializedValue, SerializedValueSlice};
use bytes::BytesMut;
use num_enum::{IntoPrimitive, TryFromPrimitive};

#[derive(Debug, Copy, Clone, PartialEq, Eq, IntoPrimitive, TryFromPrimitive)]
#[repr(u8)]
enum QueryServiceVersionReplyKind {
    Ok = 0,
    InvalidService = 1,
}

#[derive(Debug, Copy, Clone, PartialEq, Eq)]
#[cfg_attr(feature = "fuzzing", derive(arbitrary::Arbitrary))]
pub enum QueryServiceVersionResult {
    Ok(u32),
    InvalidService,
}

#[derive(Debug, Copy, Clone, PartialEq, Eq)]
#[cfg_attr(feature = "fuzzing", derive(arbitrary::Arbitrary))]
pub struct QueryServiceVersionReply {
    pub serial: u32,
    pub result: QueryServiceVersionResult,
}

impl MessageOps for QueryServiceVersionReply {
    fn kind(&self) -> MessageKind {
        MessageKind::QueryServiceVersionReply
    }

    fn serialize_message(self) -> Result<BytesMut, MessageSerializeError> {
        let mut serializer =
            MessageSerializer::without_value(MessageKind::QueryServiceVersionReply);

        serializer.put_varint_u32_le(self.serial);

        match self.result {
            QueryServiceVersionResult::Ok(version) => {
                serializer.put_discriminant_u8(QueryServiceVersionReplyKind::Ok);
                serializer.put_varint_u32_le(version);
            }
            QueryServiceVersionResult::InvalidService => {
                serializer.put_discriminant_u8(QueryServiceVersionReplyKind::InvalidService);
            }
        }

        serializer.finish()
    }

    fn deserialize_message(buf: BytesMut) -> Result<Self, MessageDeserializeError> {
        let mut deserializer =
            MessageWithoutValueDeserializer::new(buf, MessageKind::QueryServiceVersionReply)?;

        let serial = deserializer.try_get_varint_u32_le()?;

        let result = match deserializer.try_get_discriminant_u8()? {
            QueryServiceVersionReplyKind::Ok => {
                let version = deserializer.try_get_varint_u32_le()?;
                QueryServiceVersionResult::Ok(version)
            }

            QueryServiceVersionReplyKind::InvalidService => {
                QueryServiceVersionResult::InvalidService
            }
        };

        deserializer.finish()?;
        Ok(Self { serial, result })
    }

    fn value(&self) -> Option<&SerializedValueSlice> {
        None
    }

    fn value_mut(&mut self) -> Option<&mut SerializedValue> {
        None
    }
}

impl Sealed for QueryServiceVersionReply {}

impl From<QueryServiceVersionReply> for Message {
    fn from(msg: QueryServiceVersionReply) -> Self {
        Self::QueryServiceVersionReply(msg)
    }
}

#[cfg(test)]
mod test {
    use super::super::test::{assert_deserialize_eq, assert_serialize_eq};
    use super::super::Message;
    use super::{QueryServiceVersionReply, QueryServiceVersionResult};

    #[test]
    fn ok() {
        let serialized = [8, 0, 0, 0, 18, 1, 0, 2];

        let msg = QueryServiceVersionReply {
            serial: 1,
            result: QueryServiceVersionResult::Ok(2),
        };
        assert_serialize_eq(&msg, serialized);
        assert_deserialize_eq(&msg, serialized);

        let msg = Message::QueryServiceVersionReply(msg);
        assert_serialize_eq(&msg, serialized);
        assert_deserialize_eq(&msg, serialized);
    }

    #[test]
    fn invalid_service() {
        let serialized = [7, 0, 0, 0, 18, 1, 1];

        let msg = QueryServiceVersionReply {
            serial: 1,
            result: QueryServiceVersionResult::InvalidService,
        };
        assert_serialize_eq(&msg, serialized);
        assert_deserialize_eq(&msg, serialized);

        let msg = Message::QueryServiceVersionReply(msg);
        assert_serialize_eq(&msg, serialized);
        assert_deserialize_eq(&msg, serialized);
    }
}