feignhttp 0.1.2

Declarative HTTP client for rust
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 crate::{error::Result, map};
use reqwest::{Body, Client, Method, RequestBuilder, Response, Url};
use std::collections::HashMap;
use std::str::FromStr;
use std::time::Duration;

pub struct HttpClient {}

impl HttpClient {
    pub fn default_request(url: &str, method: &str) -> RequestWrapper {
        RequestWrapper::build_default(url, method)
    }
    pub fn configure_request(url: &str, method: &str, config: HttpConfig) -> RequestWrapper {
        RequestWrapper::build_with_config(url, method, config)
    }
}

pub struct HttpConfig {
    pub connect_timeout: Option<u16>,
    pub timeout: Option<u16>,
}

impl HttpConfig {
    pub fn from_map(config_map: HashMap<&str, String>) -> Self {
        let mut config = HttpConfig { connect_timeout: None, timeout: None };
        if let Some(connect_timeout) = config_map.get("connect_timeout") {
            config.connect_timeout = Some(connect_timeout.parse::<u16>().unwrap());
        }
        if let Some(timeout) = config_map.get("timeout") {
            config.timeout = Some(timeout.parse::<u16>().unwrap());
        }
        config
    }
}

pub struct RequestWrapper {
    headers: HashMap<String, String>,
    request: RequestBuilder,
}

pub struct ResponseWrapper {
    response: Response,
}

impl RequestWrapper {
    pub fn build_default(url: &str, method: &str) -> RequestWrapper {
        let request = Client::new().request(
            Method::from_str(method.to_uppercase().as_str()).unwrap(),
            Url::from_str(url).unwrap(),
        );
        RequestWrapper {
            headers: map!(
                "user-agent".to_string() => "Feign Http".to_string()),
            request,
        }
    }

    pub fn build_with_config(url: &str, method: &str, config: HttpConfig) -> RequestWrapper {
        let mut client = Client::builder();
        if let Some(millisecond) = config.connect_timeout {
            client = client.connect_timeout(Duration::from_millis(millisecond as u64));
        }
        if let Some(millisecond) = config.timeout {
            client = client.timeout(Duration::from_millis(millisecond as u64));
        }
        let request = client.build().unwrap().request(
            Method::from_str(method.to_uppercase().as_str()).unwrap(),
            Url::from_str(url).unwrap(),
        );
        RequestWrapper {
            headers: map!(
                "user-agent".to_string() => "Feign Http".to_string()),
            request,
        }
    }

    pub fn headers(mut self, header_map: HashMap<&str, String>) -> Self {
        for (k, v) in header_map {
            self.headers.insert(k.to_string().to_lowercase(), v);
        }
        self
    }

    fn set_header(mut self) -> Self {
        let mut request = self.request;
        for (k, v) in &self.headers {
            request = request.header(k.as_str(), v);
        }
        self.request = request;
        self
    }

    pub fn query(mut self, query: &Vec<(&str, String)>) -> Self {
        let mut request = self.request;
        request = request.query(query.as_slice());
        self.request = request;
        self
    }

    pub async fn send(self) -> Result<ResponseWrapper> {
        let mut response = self.set_header().request.send().await?;
        // Client or server error
        response = response.error_for_status()?;
        Ok(ResponseWrapper { response })
    }

    pub async fn send_text(
        mut self,
        text: String,
    ) -> Result<ResponseWrapper> {
        self.request = self.request.body(Body::from(text));
        self.send().await
    }

    pub async fn send_json<T>(
        mut self,
        json: &T,
    ) -> Result<ResponseWrapper>
    where
        T: serde::ser::Serialize,
    {
        self.request = self.request.json(json);
        self.send().await
    }
}

impl ResponseWrapper {
    pub fn status(self) -> http::StatusCode {
        self.response.status()
    }
    pub async fn text(self) -> Result<String> {
        Ok(self.response.text().await?)
    }

    pub async fn json<T>(self) -> Result<T>
    where
        T: serde::de::DeserializeOwned,
    {
        Ok(self.response.json::<T>().await?)
    }
}