2020-09-10 11:35:48 +00:00
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use crate::{CacheControl, Error, Result};
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2020-09-17 08:39:55 +00:00
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use serde::Serialize;
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2020-09-10 08:39:43 +00:00
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/// Query response
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2020-09-13 17:52:36 +00:00
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#[derive(Debug, Default)]
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2020-09-10 08:39:43 +00:00
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pub struct Response {
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/// Data of query result
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pub data: serde_json::Value,
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/// Extensions result
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pub extensions: Option<serde_json::Value>,
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/// Cache control value
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pub cache_control: CacheControl,
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/// Error
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pub error: Option<Error>,
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}
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impl Response {
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2020-09-13 17:52:36 +00:00
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/// Create a new successful response with the data.
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#[must_use]
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pub fn new(data: impl Into<serde_json::Value>) -> Self {
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Self {
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data: data.into(),
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..Default::default()
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}
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}
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/// Create a response from the error.
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#[must_use]
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pub fn from_error(error: impl Into<Error>) -> Self {
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Self {
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error: Some(error.into()),
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..Default::default()
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}
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}
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/// Create a response from the result of the data and an error.
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#[must_use]
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pub fn from_result(result: Result<serde_json::Value>) -> Self {
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match result {
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Ok(data) => Self::new(data),
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Err(e) => Self::from_error(e),
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}
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}
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/// Set the extensions result of the response.
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#[must_use]
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pub fn extensions(self, extensions: Option<serde_json::Value>) -> Self {
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2020-09-14 01:46:22 +00:00
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Self { extensions, ..self }
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2020-09-13 17:52:36 +00:00
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}
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/// Set the cache control of the response.
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#[must_use]
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pub fn cache_control(self, cache_control: CacheControl) -> Self {
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Self {
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cache_control,
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..self
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}
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}
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2020-09-10 11:35:48 +00:00
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/// Returns `true` if the response is ok.
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#[inline]
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pub fn is_ok(&self) -> bool {
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self.error.is_none()
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}
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/// Returns `true` if the response is error.
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2020-09-10 08:39:43 +00:00
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#[inline]
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pub fn is_err(&self) -> bool {
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self.error.is_some()
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}
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2020-09-13 17:52:36 +00:00
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/// Extract the error from the response. Only if the `error` field is `None` will this return
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/// `Ok`.
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2020-09-10 11:35:48 +00:00
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#[inline]
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pub fn into_result(self) -> Result<Self> {
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if self.is_err() {
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Err(self.error.unwrap())
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} else {
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Ok(self)
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}
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}
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2020-09-10 08:39:43 +00:00
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}
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impl From<Error> for Response {
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fn from(err: Error) -> Self {
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2020-09-13 17:52:36 +00:00
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Self::from_error(err)
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2020-09-10 08:39:43 +00:00
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}
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}
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2020-09-17 08:39:55 +00:00
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/// Response for batchable queries
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#[derive(Debug, Serialize)]
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#[serde(untagged)]
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pub enum BatchResponse {
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/// Response for single queries
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Single(Response),
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/// Response for batch queries
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Batch(Vec<Response>),
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}
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impl BatchResponse {
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/// Get cache control value
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pub fn cache_control(&self) -> CacheControl {
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match self {
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BatchResponse::Single(resp) => resp.cache_control,
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BatchResponse::Batch(resp) => resp.iter().fold(CacheControl::default(), |acc, item| {
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acc.merge(&item.cache_control)
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}),
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}
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}
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/// Returns `true` if all responses are ok.
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pub fn is_ok(&self) -> bool {
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match self {
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BatchResponse::Single(resp) => resp.is_ok(),
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BatchResponse::Batch(resp) => resp.iter().all(Response::is_ok),
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}
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_batch_response_single() {
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let resp = BatchResponse::Single(Response::new(serde_json::Value::Bool(true)));
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assert_eq!(serde_json::to_string(&resp).unwrap(), r#"{"data":true}"#);
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}
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#[test]
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fn test_batch_response_batch() {
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let resp = BatchResponse::Batch(vec![
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Response::new(serde_json::Value::Bool(true)),
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Response::new(serde_json::Value::String("1".to_string())),
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]);
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assert_eq!(
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serde_json::to_string(&resp).unwrap(),
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r#"[{"data":true},{"data":"1"}]"#
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);
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}
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}
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