async-graphql/src/response.rs
Koxiaet 6e628031bf Rework subscriptions
The main change in this commit is changing the return type of
SubscriptionType::create_stream from
Future<Result<Stream<Result<Response>>>> to just Stream<Result<Json>>. I
also allowed the returned stream to borrow from self and context.
2020-09-13 18:52:36 +01:00

94 lines
2.1 KiB
Rust

use crate::{CacheControl, Error, Result};
/// Query response
#[derive(Debug, Default)]
pub struct Response {
/// Data of query result
pub data: serde_json::Value,
/// Extensions result
pub extensions: Option<serde_json::Value>,
/// Cache control value
pub cache_control: CacheControl,
/// Error
pub error: Option<Error>,
}
impl Response {
/// Create a new successful response with the data.
#[must_use]
pub fn new(data: impl Into<serde_json::Value>) -> Self {
Self {
data: data.into(),
..Default::default()
}
}
/// Create a response from the error.
#[must_use]
pub fn from_error(error: impl Into<Error>) -> Self {
Self {
error: Some(error.into()),
..Default::default()
}
}
/// Create a response from the result of the data and an error.
#[must_use]
pub fn from_result(result: Result<serde_json::Value>) -> Self {
match result {
Ok(data) => Self::new(data),
Err(e) => Self::from_error(e),
}
}
/// Set the extensions result of the response.
#[must_use]
pub fn extensions(self, extensions: Option<serde_json::Value>) -> Self {
Self {
extensions,
..self
}
}
/// Set the cache control of the response.
#[must_use]
pub fn cache_control(self, cache_control: CacheControl) -> Self {
Self {
cache_control,
..self
}
}
/// Returns `true` if the response is ok.
#[inline]
pub fn is_ok(&self) -> bool {
self.error.is_none()
}
/// Returns `true` if the response is error.
#[inline]
pub fn is_err(&self) -> bool {
self.error.is_some()
}
/// Extract the error from the response. Only if the `error` field is `None` will this return
/// `Ok`.
#[inline]
pub fn into_result(self) -> Result<Self> {
if self.is_err() {
Err(self.error.unwrap())
} else {
Ok(self)
}
}
}
impl From<Error> for Response {
fn from(err: Error) -> Self {
Self::from_error(err)
}
}