ic_http_certification/http/http_request.rs
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use crate::{HeaderField, HttpCertificationError, HttpCertificationResult};
use candid::{
types::{Serializer, Type, TypeInner},
CandidType, Deserialize,
};
pub use http::Method;
use http::Uri;
use serde::Deserializer;
use std::{borrow::Cow, str::FromStr};
#[derive(Debug, Clone, PartialEq, Eq)]
struct MethodWrapper(Method);
impl CandidType for MethodWrapper {
fn _ty() -> Type {
TypeInner::Text.into()
}
fn idl_serialize<S>(&self, serializer: S) -> Result<(), S::Error>
where
S: Serializer,
{
self.0.as_str().idl_serialize(serializer)
}
}
impl<'de> Deserialize<'de> for MethodWrapper {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
String::deserialize(deserializer).and_then(|method| {
Method::from_str(&method)
.map(Into::into)
.map_err(|_| serde::de::Error::custom("Invalid HTTP method"))
})
}
}
impl From<Method> for MethodWrapper {
fn from(method: Method) -> Self {
Self(method)
}
}
/// A Candid-encodable representation of an HTTP request. This struct is used by
/// the `http_request` method of the HTTP Gateway Protocol's Candid interface.
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequest, Method};
///
/// let request = HttpRequest::builder()
/// .with_method(Method::GET)
/// .with_url("/")
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .with_body(&[1, 2, 3])
/// .with_certificate_version(2)
/// .build();
///
/// assert_eq!(request.method(), Method::GET);
/// assert_eq!(request.url(), "/");
/// assert_eq!(request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// assert_eq!(request.body(), &[1, 2, 3]);
/// assert_eq!(request.certificate_version(), Some(2));
/// ```
///
/// # Helpers
///
/// There are also a number of convenience methods for quickly creating an [HttpRequest] with
/// commonly used HTTP methods:
///
/// - [GET](HttpRequest::get)
/// - [POST](HttpRequest::post)
/// - [PUT](HttpRequest::put)
/// - [PATCH](HttpRequest::patch)
/// - [DELETE](HttpRequest::delete)
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/").build();
///
/// assert_eq!(request.method(), "GET");
/// assert_eq!(request.url(), "/");
/// ```
#[derive(Clone, Debug, CandidType, Deserialize, PartialEq, Eq)]
pub struct HttpRequest<'a> {
/// HTTP request method.
method: MethodWrapper,
/// HTTP request URL.
url: String,
/// HTTP request headers.
headers: Vec<HeaderField>,
/// HTTP request body as an array of bytes.
body: Cow<'a, [u8]>,
/// The max response verification version to use in the response's
/// certificate.
certificate_version: Option<u16>,
}
impl<'a> HttpRequest<'a> {
/// Creates a new [HttpRequestBuilder] initialized with a GET method and
/// the given URL.
///
/// This method returns an instance of [HttpRequestBuilder] which can be
/// used to create an [HttpRequest].
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequest, Method};
///
/// let request = HttpRequest::get("/").build();
///
/// assert_eq!(request.method(), Method::GET);
/// ```
pub fn get(url: impl Into<String>) -> HttpRequestBuilder<'a> {
HttpRequestBuilder::new()
.with_method(Method::GET)
.with_url(url)
}
/// Creates a new [HttpRequestBuilder] initialized with a POST method and
/// the given URL.
///
/// This method returns an instance of [HttpRequestBuilder] which can be
/// used to create an [HttpRequest].
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequest, Method};
///
/// let request = HttpRequest::post("/").build();
///
/// assert_eq!(request.method(), Method::POST);
/// ```
pub fn post(url: impl Into<String>) -> HttpRequestBuilder<'a> {
HttpRequestBuilder::new()
.with_method(Method::POST)
.with_url(url)
}
/// Creates a new [HttpRequestBuilder] initialized with a PUT method and
/// the given URL.
///
/// This method returns an instance of [HttpRequestBuilder] which can be
/// used to create an [HttpRequest].
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequest, Method};
///
/// let request = HttpRequest::put("/").build();
///
/// assert_eq!(request.method(), Method::PUT);
/// ```
pub fn put(url: impl Into<String>) -> HttpRequestBuilder<'a> {
HttpRequestBuilder::new()
.with_method(Method::PUT)
.with_url(url)
}
/// Creates a new [HttpRequestBuilder] initialized with a PATCH method and
/// the given URL.
///
/// This method returns an instance of [HttpRequestBuilder] which can be
/// used to create an [HttpRequest].
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequest, Method};
///
/// let request = HttpRequest::patch("/").build();
///
/// assert_eq!(request.method(), Method::PATCH);
/// ```
pub fn patch(url: impl Into<String>) -> HttpRequestBuilder<'a> {
HttpRequestBuilder::new()
.with_method(Method::PATCH)
.with_url(url)
}
/// Creates a new [HttpRequestBuilder] initialized with a DELETE method and
/// the given URL.
///
/// This method returns an instance of [HttpRequestBuilder] which can be
/// used to create an [HttpRequest].
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequest, Method};
///
/// let request = HttpRequest::delete("/").build();
///
/// assert_eq!(request.method(), Method::DELETE);
/// ```
pub fn delete(url: impl Into<String>) -> HttpRequestBuilder<'a> {
HttpRequestBuilder::new()
.with_method(Method::DELETE)
.with_url(url)
}
/// Creates and returns an instance of [HttpRequestBuilder], a builder-style object
/// which can be used to create an [HttpRequest].
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequest, Method};
///
/// let request = HttpRequest::builder()
/// .with_method(Method::GET)
/// .with_url("/")
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .with_body(&[1, 2, 3])
/// .with_certificate_version(2)
/// .build();
///
/// assert_eq!(request.method(), Method::GET);
/// assert_eq!(request.url(), "/");
/// assert_eq!(request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// assert_eq!(request.body(), &[1, 2, 3]);
/// assert_eq!(request.certificate_version(), Some(2));
/// ```
#[inline]
pub fn builder() -> HttpRequestBuilder<'a> {
HttpRequestBuilder::new()
}
/// Returns the HTTP method of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/").build();
///
/// assert_eq!(request.method(), "GET");
/// ```
#[inline]
pub fn method(&self) -> &Method {
&self.method.0
}
/// Returns the URL of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/").build();
///
/// assert_eq!(request.url(), "/");
/// ```
#[inline]
pub fn url(&self) -> &str {
&self.url
}
/// Returns the headers of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/")
/// .with_headers(vec![("Accept".into(), "text/plain".into())])
/// .build();
///
/// assert_eq!(request.headers(), &[("Accept".into(), "text/plain".into())]);
/// ```
#[inline]
pub fn headers(&self) -> &[HeaderField] {
&self.headers
}
/// Returns the body of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/")
/// .with_body(&[1, 2, 3])
/// .build();
///
/// assert_eq!(request.body(), &[1, 2, 3]);
/// ```
#[inline]
pub fn body(&self) -> &[u8] {
&self.body
}
/// Returns the max response verification version to use in the response's
/// certificate.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/")
/// .with_certificate_version(2)
/// .build();
///
/// assert_eq!(request.certificate_version(), Some(2));
/// ```
#[inline]
pub fn certificate_version(&self) -> Option<u16> {
self.certificate_version
}
/// Returns the path of the request URL, without domain, query parameters or fragments.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("https://canister.com/sample-asset.txt").build();
///
/// assert_eq!(request.get_path().unwrap(), "/sample-asset.txt");
/// ```
pub fn get_path(&self) -> HttpCertificationResult<String> {
let uri = self
.url
.parse::<Uri>()
.map_err(|_| HttpCertificationError::MalformedUrl(self.url.to_string()))?;
let decoded_path = urlencoding::decode(uri.path()).map(|path| path.into_owned())?;
Ok(decoded_path)
}
/// Returns the query parameters of the request URL, if any, as a string.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("https://canister.com/sample-asset.txt?foo=bar").build();
///
/// assert_eq!(request.get_query().unwrap(), Some("foo=bar".to_string()));
/// ```
pub fn get_query(&self) -> HttpCertificationResult<Option<String>> {
self.url
.parse::<Uri>()
.map(|uri| uri.query().map(|uri| uri.to_owned()))
.map_err(|_| HttpCertificationError::MalformedUrl(self.url.to_string()))
}
}
/// An HTTP request builder.
///
/// This type can be used to construct an instance of an [HttpRequest] using a builder-like
/// pattern.
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequestBuilder, Method};
///
/// let request = HttpRequestBuilder::new()
/// .with_method(Method::GET)
/// .with_url("/")
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .with_body(&[1, 2, 3])
/// .with_certificate_version(2)
/// .build();
///
/// assert_eq!(request.method(), Method::GET);
/// assert_eq!(request.url(), "/");
/// assert_eq!(request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// assert_eq!(request.body(), &[1, 2, 3]);
/// assert_eq!(request.certificate_version(), Some(2));
/// ```
#[derive(Debug, Clone, Default)]
pub struct HttpRequestBuilder<'a> {
method: Option<MethodWrapper>,
url: Option<String>,
headers: Vec<HeaderField>,
body: Cow<'a, [u8]>,
certificate_version: Option<u16>,
}
impl<'a> HttpRequestBuilder<'a> {
/// Creates a new instance of the [HttpRequestBuilder] that can be used to
/// construct an [HttpRequest].
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequestBuilder, Method};
///
/// let request = HttpRequestBuilder::new()
/// .with_method(Method::GET)
/// .with_url("/")
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .with_body(&[1, 2, 3])
/// .with_certificate_version(2)
/// .build();
///
/// assert_eq!(request.method(), Method::GET);
/// assert_eq!(request.url(), "/");
/// assert_eq!(request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// assert_eq!(request.body(), &[1, 2, 3]);
/// assert_eq!(request.certificate_version(), Some(2));
/// ```
#[inline]
pub fn new() -> Self {
Self::default()
}
/// Set the HTTP method of the [HttpRequest].
///
/// This function will accept both owned and borrowed values. By default,
/// the method will be set to `"GET"`.
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequestBuilder, Method};
///
/// let request = HttpRequestBuilder::new()
/// .with_method(Method::GET)
/// .build();
///
/// assert_eq!(request.method(), Method::GET);
/// ```
#[inline]
pub fn with_method(mut self, method: Method) -> Self {
self.method = Some(method.into());
self
}
/// Set the HTTP URL of the [HttpRequest].
///
/// This function will accept both owned and borrowed values. By default,
/// the URL will be set to `"/"`.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequestBuilder;
///
/// let request = HttpRequestBuilder::new()
/// .with_url("/")
/// .build();
///
/// assert_eq!(request.url(), "/");
/// ```
#[inline]
pub fn with_url(mut self, url: impl Into<String>) -> Self {
self.url = Some(url.into());
self
}
/// Set the HTTP headers of the [HttpRequest].
///
/// By default the headers will be an empty array.
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequestBuilder, HeaderField};
///
/// let request = HttpRequestBuilder::new()
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .build();
///
/// assert_eq!(request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// ```
#[inline]
pub fn with_headers(mut self, headers: Vec<HeaderField>) -> Self {
self.headers = headers;
self
}
/// Set the HTTP body of the [HttpRequest].
///
/// This function will accept both owned and borrowed values. By default,
/// the body will be an empty array.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequestBuilder;
///
/// let request = HttpRequestBuilder::new()
/// .with_body(&[1, 2, 3])
/// .build();
///
/// assert_eq!(request.body(), &[1, 2, 3]);
/// ```
#[inline]
pub fn with_body(mut self, body: impl Into<Cow<'a, [u8]>>) -> Self {
self.body = body.into();
self
}
/// Set the max response verification vwersion to use in the
/// [crate::HttpResponse] certificate.
///
/// By default, the certificate version will be `None`, which
/// is equivalent to setting it to version `1`.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequestBuilder;
///
/// let request = HttpRequestBuilder::new()
/// .with_certificate_version(2)
/// .build();
///
/// assert_eq!(request.certificate_version(), Some(2));
/// ```
#[inline]
pub fn with_certificate_version(mut self, certificate_version: u16) -> Self {
self.certificate_version = Some(certificate_version);
self
}
/// Build an [HttpRequest] from the builder.
///
/// If the method is not set, it will default to `"GET"`.
/// If the URL is not set, it will default to `"/"`.
/// If the certificate version is not set, it will default to `1`.
/// If the headers or body are not set, they will default to empty arrays.
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequestBuilder, Method};
///
/// let request = HttpRequestBuilder::new()
/// .with_method(Method::GET)
/// .with_url("/")
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .with_body(&[1, 2, 3])
/// .with_certificate_version(2)
/// .build();
///
/// assert_eq!(request.method(), Method::GET);
/// assert_eq!(request.url(), "/");
/// assert_eq!(request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// assert_eq!(request.body(), &[1, 2, 3]);
/// assert_eq!(request.certificate_version(), Some(2));
/// ```
#[inline]
pub fn build(self) -> HttpRequest<'a> {
HttpRequest {
method: self.method.unwrap_or(Method::GET.into()),
url: self.url.unwrap_or("/".to_string()),
headers: self.headers,
body: self.body,
certificate_version: self.certificate_version,
}
}
/// Build an [HttpUpdateRequest] from the builder.
///
/// If the method is not set, it will default to `"GET"`.
/// If the URL is not set, it will default to `"/"`.
/// If the headers or body are not set, they will default to empty arrays.
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpRequestBuilder, Method};
///
/// let update_request = HttpRequestBuilder::new()
/// .with_method(Method::GET)
/// .with_url("/")
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .with_body(&[1, 2, 3])
/// .build_update();
///
/// assert_eq!(update_request.method(), Method::GET);
/// assert_eq!(update_request.url(), "/");
/// assert_eq!(update_request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// assert_eq!(update_request.body(), &[1, 2, 3]);
/// ```
#[inline]
pub fn build_update(self) -> HttpUpdateRequest<'a> {
HttpUpdateRequest {
method: self.method.unwrap_or(Method::GET.into()),
url: self.url.unwrap_or("/".to_string()),
headers: self.headers,
body: self.body,
}
}
}
/// A Candid-encodable representation of an HTTP update request. This struct is
/// used by the `http_update_request` method of the HTTP Gateway Protocol.
///
/// This is the same as [HttpRequest], excluding the
/// [certificate_version](HttpRequest::certificate_version) property.
///
/// # Examples
///
/// ```
/// use ic_http_certification::{HttpUpdateRequest, HttpRequest, Method};
///
/// let request = HttpRequest::get("/")
/// .with_method(Method::GET)
/// .with_url("/")
/// .with_headers(vec![("X-Custom-Foo".into(), "Bar".into())])
/// .with_body(&[1, 2, 3])
/// .with_certificate_version(2)
/// .build();
/// let update_request = HttpUpdateRequest::from(request);
///
/// assert_eq!(update_request.method(), Method::GET);
/// assert_eq!(update_request.url(), "/");
/// assert_eq!(update_request.headers(), &[("X-Custom-Foo".into(), "Bar".into())]);
/// assert_eq!(update_request.body(), &[1, 2, 3]);
/// ```
#[derive(Clone, Debug, CandidType, Deserialize, PartialEq, Eq)]
pub struct HttpUpdateRequest<'a> {
/// HTTP request method.
method: MethodWrapper,
/// HTTP request URL.
url: String,
/// HTTP request headers.
headers: Vec<HeaderField>,
/// HTTP request body as an array of bytes.
body: Cow<'a, [u8]>,
}
impl<'a> HttpUpdateRequest<'a> {
/// Returns the HTTP method of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/").build_update();
///
/// assert_eq!(request.method(), "GET");
/// ```
#[inline]
pub fn method(&self) -> &Method {
&self.method.0
}
/// Returns the URL of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/").build_update();
///
/// assert_eq!(request.url(), "/");
/// ```
#[inline]
pub fn url(&self) -> &str {
&self.url
}
/// Returns the headers of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/")
/// .with_headers(vec![("Accept".into(), "text/plain".into())])
/// .build_update();
///
/// assert_eq!(request.headers(), &[("Accept".into(), "text/plain".into())]);
/// ```
#[inline]
pub fn headers(&self) -> &[HeaderField] {
&self.headers
}
/// Returns the body of the request.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("/")
/// .with_body(&[1, 2, 3])
/// .build_update();
///
/// assert_eq!(request.body(), &[1, 2, 3]);
/// ```
#[inline]
pub fn body(&self) -> &[u8] {
&self.body
}
/// Returns the path of the request URL, without domain, query parameters or fragments.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("https://canister.com/sample-asset.txt").build();
///
/// assert_eq!(request.get_path().unwrap(), "/sample-asset.txt");
/// ```
pub fn get_path(&self) -> HttpCertificationResult<String> {
let uri = self
.url
.parse::<Uri>()
.map_err(|_| HttpCertificationError::MalformedUrl(self.url.to_string()))?;
let decoded_path = urlencoding::decode(uri.path()).map(|path| path.into_owned())?;
Ok(decoded_path)
}
/// Returns the query parameters of the request URL, if any, as a string.
///
/// # Examples
///
/// ```
/// use ic_http_certification::HttpRequest;
///
/// let request = HttpRequest::get("https://canister.com/sample-asset.txt?foo=bar").build();
///
/// assert_eq!(request.get_query().unwrap(), Some("foo=bar".to_string()));
/// ```
pub fn get_query(&self) -> HttpCertificationResult<Option<String>> {
self.url
.parse::<Uri>()
.map(|uri| uri.query().map(|uri| uri.to_owned()))
.map_err(|_| HttpCertificationError::MalformedUrl(self.url.to_string()))
}
}
impl<'a> From<HttpRequest<'a>> for HttpUpdateRequest<'a> {
fn from(req: HttpRequest<'a>) -> Self {
HttpUpdateRequest {
method: req.method,
url: req.url,
headers: req.headers,
body: req.body,
}
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn request_get_uri() {
let req = HttpRequest::get("https://canister.com/sample-asset.txt").build();
let path = req.get_path().unwrap();
let query = req.get_query().unwrap();
assert_eq!(path, "/sample-asset.txt");
assert!(query.is_none());
}
#[test]
fn request_get_encoded_uri() {
let test_requests = [
(
HttpRequest::get("https://canister.com/%73ample-asset.txt").build(),
"/sample-asset.txt",
"",
),
(
HttpRequest::get("https://canister.com/path/123?foo=test%20component&bar=1").build(),
"/path/123",
"foo=test%20component&bar=1",
),
(
HttpRequest::get("https://canister.com/a%20file.txt").build(),
"/a file.txt",
"",
),
(
HttpRequest::get("https://canister.com/mujin0722/3888-zjfrd-tqaaa-aaaaf-qakia-cai/%E6%97%A0%E8%AE%BA%E7%BE%8E%E8%81%94%E5%82%A8%E6%98%AF%E5%90%A6%E5%8A%A0%E6%81%AFbtc%E4%BB%8D%E5%B0%86%E5%9B%9E%E5%88%B07%E4%B8%87%E5%88%80").build(),
"/mujin0722/3888-zjfrd-tqaaa-aaaaf-qakia-cai/无论美联储是否加息btc仍将回到7万刀",
"",
),
];
for (req, expected_path, expected_query) in test_requests.iter() {
let path = req.get_path().unwrap();
let query = req.get_query().unwrap();
assert_eq!(path, *expected_path);
assert_eq!(query.unwrap_or_default(), *expected_query);
}
}
}