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
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236

use std::convert::TryFrom;
use std::net;
use std::rc::Rc;
use std::time::Duration;

use bytes::Bytes;
use futures_core::Stream;
use serde::Serialize;

use actix_http::body::Body;
use actix_http::http::header::IntoHeaderValue;
use actix_http::http::{Error as HttpError, HeaderMap, HeaderName, Method, Uri};
use actix_http::{Error, RequestHead};

use crate::sender::{RequestSender, SendClientRequest};
use crate::ClientConfig;

/// `FrozenClientRequest` struct represents clonable client request.
/// It could be used to send same request multiple times.
#[derive(Clone)]
pub struct FrozenClientRequest {
    pub(crate) head: Rc<RequestHead>,
    pub(crate) addr: Option<net::SocketAddr>,
    pub(crate) response_decompress: bool,
    pub(crate) timeout: Option<Duration>,
    pub(crate) config: Rc<ClientConfig>,
}

impl FrozenClientRequest {
    /// Get HTTP URI of request
    pub fn get_uri(&self) -> &Uri {
        &self.head.uri
    }

    /// Get HTTP method of this request
    pub fn get_method(&self) -> &Method {
        &self.head.method
    }

    /// Returns request's headers.
    pub fn headers(&self) -> &HeaderMap {
        &self.head.headers
    }

    /// Send a body.
    pub fn send_body<B>(&self, body: B) -> SendClientRequest
    where
        B: Into<Body>,
    {
        RequestSender::Rc(self.head.clone(), None).send_body(
            self.addr,
            self.response_decompress,
            self.timeout,
            self.config.as_ref(),
            body,
        )
    }

    /// Send a json body.
    pub fn send_json<T: Serialize>(&self, value: &T) -> SendClientRequest {
        RequestSender::Rc(self.head.clone(), None).send_json(
            self.addr,
            self.response_decompress,
            self.timeout,
            self.config.as_ref(),
            value,
        )
    }

    /// Send an urlencoded body.
    pub fn send_form<T: Serialize>(&self, value: &T) -> SendClientRequest {
        RequestSender::Rc(self.head.clone(), None).send_form(
            self.addr,
            self.response_decompress,
            self.timeout,
            self.config.as_ref(),
            value,
        )
    }

    /// Send a streaming body.
    pub fn send_stream<S, E>(&self, stream: S) -> SendClientRequest
    where
        S: Stream<Item = Result<Bytes, E>> + Unpin + 'static,
        E: Into<Error> + 'static,
    {
        RequestSender::Rc(self.head.clone(), None).send_stream(
            self.addr,
            self.response_decompress,
            self.timeout,
            self.config.as_ref(),
            stream,
        )
    }

    /// Send an empty body.
    pub fn send(&self) -> SendClientRequest {
        RequestSender::Rc(self.head.clone(), None).send(
            self.addr,
            self.response_decompress,
            self.timeout,
            self.config.as_ref(),
        )
    }

    /// Create a `FrozenSendBuilder` with extra headers
    pub fn extra_headers(&self, extra_headers: HeaderMap) -> FrozenSendBuilder {
        FrozenSendBuilder::new(self.clone(), extra_headers)
    }

    /// Create a `FrozenSendBuilder` with an extra header
    pub fn extra_header<K, V>(&self, key: K, value: V) -> FrozenSendBuilder
    where
        HeaderName: TryFrom<K>,
        <HeaderName as TryFrom<K>>::Error: Into<HttpError>,
        V: IntoHeaderValue,
    {
        self.extra_headers(HeaderMap::new())
            .extra_header(key, value)
    }
}

/// Builder that allows to modify extra headers.
pub struct FrozenSendBuilder {
    req: FrozenClientRequest,
    extra_headers: HeaderMap,
    err: Option<HttpError>,
}

impl FrozenSendBuilder {
    pub(crate) fn new(req: FrozenClientRequest, extra_headers: HeaderMap) -> Self {
        Self {
            req,
            extra_headers,
            err: None,
        }
    }

    /// Insert a header, it overrides existing header in `FrozenClientRequest`.
    pub fn extra_header<K, V>(mut self, key: K, value: V) -> Self
    where
        HeaderName: TryFrom<K>,
        <HeaderName as TryFrom<K>>::Error: Into<HttpError>,
        V: IntoHeaderValue,
    {
        match HeaderName::try_from(key) {
            Ok(key) => match value.try_into() {
                Ok(value) => self.extra_headers.insert(key, value),
                Err(e) => self.err = Some(e.into()),
            },
            Err(e) => self.err = Some(e.into()),
        }
        self
    }

    /// Complete request construction and send a body.
    pub fn send_body<B>(self, body: B) -> SendClientRequest
    where
        B: Into<Body>,
    {
        if let Some(e) = self.err {
            return e.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send_body(
            self.req.addr,
            self.req.response_decompress,
            self.req.timeout,
            self.req.config.as_ref(),
            body,
        )
    }

    /// Complete request construction and send a json body.
    pub fn send_json<T: Serialize>(self, value: &T) -> SendClientRequest {
        if let Some(e) = self.err {
            return e.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send_json(
            self.req.addr,
            self.req.response_decompress,
            self.req.timeout,
            self.req.config.as_ref(),
            value,
        )
    }

    /// Complete request construction and send an urlencoded body.
    pub fn send_form<T: Serialize>(self, value: &T) -> SendClientRequest {
        if let Some(e) = self.err {
            return e.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send_form(
            self.req.addr,
            self.req.response_decompress,
            self.req.timeout,
            self.req.config.as_ref(),
            value,
        )
    }

    /// Complete request construction and send a streaming body.
    pub fn send_stream<S, E>(self, stream: S) -> SendClientRequest
    where
        S: Stream<Item = Result<Bytes, E>> + Unpin + 'static,
        E: Into<Error> + 'static,
    {
        if let Some(e) = self.err {
            return e.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send_stream(
            self.req.addr,
            self.req.response_decompress,
            self.req.timeout,
            self.req.config.as_ref(),
            stream,
        )
    }

    /// Complete request construction and send an empty body.
    pub fn send(self) -> SendClientRequest {
        if let Some(e) = self.err {
            return e.into();
        }

        RequestSender::Rc(self.req.head, Some(self.extra_headers)).send(
            self.req.addr,
            self.req.response_decompress,
            self.req.timeout,
            self.req.config.as_ref(),
        )
    }
}