rocketmq-remoting 0.9.0

Rust implementation of Apache rocketmq remoting
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

// Copyright 2023 The RocketMQ Rust Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::any::Any;

use rocketmq_error::RocketmqError;
use rocketmq_rust::ArcMut;

use crate::protocol::command_custom_header::CommandCustomHeader;

#[derive(Default)]
pub struct RpcResponse {
    pub code: i32,
    pub header: Option<ArcMut<Box<dyn CommandCustomHeader + Send + Sync + 'static>>>,
    pub body: Option<Box<dyn Any>>,
    pub exception: Option<RocketmqError>,
}

impl RpcResponse {
    pub fn get_header<T>(&self) -> Option<&T>
    where
        T: CommandCustomHeader + Send + Sync + 'static,
    {
        match self.header.as_ref() {
            None => None,
            Some(value) => value.as_ref().as_any().downcast_ref::<T>(),
        }
    }

    pub fn get_header_mut_from_ref<T>(&self) -> Option<&mut T>
    where
        T: CommandCustomHeader + Send + Sync + 'static,
    {
        match self.header.as_ref() {
            None => None,
            Some(value) => value.mut_from_ref().as_any_mut().downcast_mut::<T>(),
        }
    }

    pub fn get_header_mut<T>(&mut self) -> Option<&mut T>
    where
        T: CommandCustomHeader + Send + Sync + 'static,
    {
        match self.header.as_mut() {
            None => None,
            Some(value) => value.as_mut().as_any_mut().downcast_mut::<T>(),
        }
    }

    pub fn new_exception(exception: Option<RocketmqError>) -> Self {
        Self {
            code: exception.as_ref().map_or(0, |e| match e {
                RocketmqError::RpcError(code, _) => *code,
                _ => 0,
            }),
            header: None,
            body: None,
            exception,
        }
    }

    pub fn new(
        code: i32,
        header: Box<dyn CommandCustomHeader + Send + Sync + 'static>,
        body: Option<Box<dyn Any>>,
    ) -> Self {
        Self {
            code,
            header: Some(ArcMut::new(header)),
            body,
            exception: None,
        }
    }

    pub fn new_option(code: i32, body: Option<Box<dyn Any>>) -> Self {
        Self {
            code,
            header: None,
            body,
            exception: None,
        }
    }
}