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

use crate::OkaeriSdkError;
use hyper::client::HttpConnector;
use hyper::{Body, Client, Method, Request};
use hyper_timeout::TimeoutConnector;
use hyper_tls::HttpsConnector;
use serde::de::DeserializeOwned;
use std::collections::HashMap;
use std::env;
use std::time::Duration;
use url::Url;

type Result<T> = std::result::Result<T, OkaeriSdkError>;

pub(crate) struct OkaeriClient {
    base_url: Url,
    hyper: Client<TimeoutConnector<HttpsConnector<HttpConnector>>>,
    headers: HashMap<String, String>,
}

impl OkaeriClient {
    pub fn new(
        base_url: Url,
        timeout: Duration,
        mut headers: HashMap<String, String>,
    ) -> Result<Self> {
        let https = HttpsConnector::new();
        let mut connector = TimeoutConnector::new(https);
        connector.set_connect_timeout(Some(timeout));
        connector.set_read_timeout(Some(timeout));
        connector.set_write_timeout(Some(timeout));
        let hyper = Client::builder().build::<_, hyper::Body>(connector);
        headers.insert(
            String::from("User-Agent"),
            String::from("okaeri-sdk/1 (rust)"),
        );
        Ok(OkaeriClient {
            base_url,
            hyper,
            headers,
        })
    }

    pub(crate) fn read_base_url(provided: Option<&str>, def: &str, env_name: &str) -> Result<Url> {
        let base_url = match env::var(env_name) {
            Ok(value) => value,
            Err(_) => String::from(provided.unwrap_or(def)),
        };
        let base_url =
            Url::parse(base_url.as_str()).map_err(|source| OkaeriSdkError::InvalidUrl {
                url: base_url,
                source,
            })?;
        Ok(base_url)
    }

    pub(crate) fn read_timeout(
        provided: Option<Duration>,
        def: Duration,
        env_name: &str,
    ) -> Result<Duration> {
        let timeout = match env::var(env_name) {
            Ok(from) => {
                let value = from
                    .parse::<u64>()
                    .map_err(|_| OkaeriSdkError::InvalidInt { from })?;
                Duration::from_millis(value)
            }
            Err(_) => provided.unwrap_or(def),
        };
        Ok(timeout)
    }

    pub(crate) async fn post<T>(self, path: impl AsRef<str>, body: impl Into<String>) -> Result<T>
    where
        T: DeserializeOwned,
    {
        self.request(path, body, Method::POST).await
    }

    pub(crate) async fn get<T>(self, path: impl AsRef<str>) -> Result<T>
    where
        T: DeserializeOwned,
    {
        self.request(path, "", Method::GET).await
    }

    async fn request<T>(
        self,
        path: impl AsRef<str>,
        body: impl Into<String>,
        method: impl Into<Method>,
    ) -> Result<T>
    where
        T: DeserializeOwned,
    {
        let path = path.as_ref();
        let body = body.into();
        let method = method.into();

        let url = format!("{}{}", self.base_url, path);
        let mut req = Request::builder().method(method).uri(url);

        for (key, value) in self.headers {
            req = req.header(key.as_str(), value.as_str());
        }

        let req = req
            .body(Body::from(body))
            .map_err(|err| OkaeriSdkError::ResponseError {
                group: String::from("REQUEST_ERROR"),
                message: format!("failed to create request: {}", err),
            })?;

        let res = self
            .hyper
            .request(req)
            .await
            .map_err(|err| OkaeriSdkError::ResponseError {
                group: String::from("REQUEST_ERROR"),
                message: format!("failed to dispatch request: {}", err),
            })?;

        if !res.status().is_success() {
            let error = OkaeriSdkError::ResponseError {
                group: String::from("REQUEST_ERROR"),
                message: format!("received invalid status code {}", res.status()),
            };
            return Err(error);
        }

        let bytes =
            hyper::body::to_bytes(res)
                .await
                .map_err(|err| OkaeriSdkError::ResponseError {
                    group: String::from("REQUEST_ERROR"),
                    message: format!("failed to process request: {}", err),
                })?;

        let body_str =
            String::from_utf8(bytes.to_vec()).map_err(|err| OkaeriSdkError::ResponseError {
                group: String::from("REQUEST_ERROR"),
                message: format!("failed to convert body to string: {}", err),
            })?;

        let info: T =
            serde_json::from_str(&body_str).map_err(|_| OkaeriSdkError::ResponseParseError {
                body: body_str.clone(),
            })?;

        Ok(info)
    }
}