dubbo 0.4.0

dubbo
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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 crate::Url;
use http::{HeaderValue, Uri};
use std::{
    fmt::{Debug, Formatter},
    str::FromStr,
};
use tower_service::Service;

use crate::{
    invoker::clone_body::CloneBody,
    triple::transport::{self, connection::Connection},
};

pub struct TripleInvoker {
    url: Url,
    conn: Connection,
}

impl TripleInvoker {
    pub fn new(url: Url) -> TripleInvoker {
        let uri = http::Uri::from_str(url.as_str()).unwrap();
        Self {
            url,
            conn: Connection::new().with_host(uri).build(),
        }
    }
}

impl Debug for TripleInvoker {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        f.write_str(format!("{:?}", self.url).as_str())
    }
}

impl TripleInvoker {
    pub fn map_request(&self, req: http::Request<CloneBody>) -> http::Request<CloneBody> {
        let (parts, body) = req.into_parts();

        let path_and_query = parts.headers.get("path").unwrap().to_str().unwrap();

        let authority = self.url.authority();

        let uri = Uri::builder()
            .scheme("http")
            .authority(authority)
            .path_and_query(path_and_query)
            .build()
            .unwrap();

        let mut req = hyper::Request::builder()
            .version(http::Version::HTTP_2)
            .uri(uri.clone())
            .method("POST")
            .body(body)
            .unwrap();

        // add header of source
        for (k, v) in parts.headers.iter() {
            req.headers_mut().insert(k, v.to_owned());
        }
        // *req.version_mut() = http::Version::HTTP_2;
        req.headers_mut()
            .insert("method", HeaderValue::from_static("POST"));
        req.headers_mut().insert(
            "scheme",
            HeaderValue::from_str(uri.scheme_str().unwrap()).unwrap(),
        );
        req.headers_mut()
            .insert("path", HeaderValue::from_str(uri.path()).unwrap());
        req.headers_mut().insert(
            "authority",
            HeaderValue::from_str(uri.authority().unwrap().as_str()).unwrap(),
        );
        req.headers_mut().insert(
            "content-type",
            HeaderValue::from_static("application/grpc+proto"),
        );
        req.headers_mut()
            .insert("user-agent", HeaderValue::from_static("dubbo-rust/0.1.0"));
        req.headers_mut()
            .insert("te", HeaderValue::from_static("trailers"));
        req.headers_mut().insert(
            "tri-service-version",
            HeaderValue::from_static("dubbo-rust/0.1.0"),
        );
        req.headers_mut()
            .insert("tri-service-group", HeaderValue::from_static("cluster"));
        req.headers_mut().insert(
            "tri-unit-info",
            HeaderValue::from_static("dubbo-rust/0.1.0"),
        );
        // if let Some(_encoding) = self.send_compression_encoding {

        // }

        req.headers_mut()
            .insert("grpc-encoding", http::HeaderValue::from_static("gzip"));

        req.headers_mut().insert(
            "grpc-accept-encoding",
            http::HeaderValue::from_static("gzip"),
        );

        // // const (
        // //     TripleContentType    = "application/grpc+proto"
        // //     TripleUserAgent      = "grpc-go/1.35.0-dev"
        // //     TripleServiceVersion = "tri-service-version"
        // //     TripleAttachement    = "tri-attachment"
        // //     TripleServiceGroup   = "tri-service-group"
        // //     TripleRequestID      = "tri-req-id"
        // //     TripleTraceID        = "tri-trace-traceid"
        // //     TripleTraceRPCID     = "tri-trace-rpcid"
        // //     TripleTraceProtoBin  = "tri-trace-proto-bin"
        // //     TripleUnitInfo       = "tri-unit-info"
        // // )
        req
    }
}

impl Service<http::Request<CloneBody>> for TripleInvoker {
    type Response = http::Response<crate::BoxBody>;

    type Error = crate::Error;

    type Future = crate::BoxFuture<Self::Response, Self::Error>;

    fn poll_ready(
        &mut self,
        cx: &mut std::task::Context<'_>,
    ) -> std::task::Poll<Result<(), Self::Error>> {
        <transport::connection::Connection as Service<http::Request<CloneBody>>>::poll_ready(
            &mut self.conn,
            cx,
        )
    }

    fn call(&mut self, req: http::Request<CloneBody>) -> Self::Future {
        let req = self.map_request(req);

        self.conn.call(req)
    }
}