mirror of https://github.com/LemmyNet/lemmy.git
118 lines
2.7 KiB
Rust
118 lines
2.7 KiB
Rust
use std::{
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fmt,
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fmt::{Debug, Display},
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};
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use tracing_error::SpanTrace;
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#[derive(serde::Serialize)]
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struct ApiError {
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error: String,
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}
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pub type LemmyResult<T> = Result<T, LemmyError>;
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pub struct LemmyError {
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pub message: Option<String>,
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pub inner: anyhow::Error,
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pub context: SpanTrace,
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}
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impl LemmyError {
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/// Create LemmyError from a message, including stack trace
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pub fn from_message(message: &str) -> Self {
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let inner = anyhow::anyhow!("{}", message);
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LemmyError {
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message: Some(message.into()),
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inner,
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context: SpanTrace::capture(),
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}
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}
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/// Create a LemmyError from error and message, including stack trace
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pub fn from_error_message<E>(error: E, message: &str) -> Self
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where
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E: Into<anyhow::Error>,
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{
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LemmyError {
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message: Some(message.into()),
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inner: error.into(),
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context: SpanTrace::capture(),
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}
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}
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/// Add message to existing LemmyError (or overwrite existing error)
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pub fn with_message(self, message: &str) -> Self {
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LemmyError {
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message: Some(message.into()),
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..self
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}
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}
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pub fn to_json(&self) -> Result<String, Self> {
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let api_error = match &self.message {
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Some(error) => ApiError {
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error: error.into(),
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},
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None => ApiError {
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error: "Unknown".into(),
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},
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};
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Ok(serde_json::to_string(&api_error)?)
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}
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}
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impl<T> From<T> for LemmyError
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where
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T: Into<anyhow::Error>,
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{
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fn from(t: T) -> Self {
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LemmyError {
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message: None,
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inner: t.into(),
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context: SpanTrace::capture(),
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}
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}
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}
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impl Debug for LemmyError {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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f.debug_struct("LemmyError")
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.field("message", &self.message)
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.field("inner", &self.inner)
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.field("context", &self.context)
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.finish()
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}
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}
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impl Display for LemmyError {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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if let Some(message) = &self.message {
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write!(f, "{message}: ")?;
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}
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writeln!(f, "{}", self.inner)?;
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fmt::Display::fmt(&self.context, f)
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}
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}
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impl actix_web::error::ResponseError for LemmyError {
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fn status_code(&self) -> http::StatusCode {
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match self.inner.downcast_ref::<diesel::result::Error>() {
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Some(diesel::result::Error::NotFound) => http::StatusCode::NOT_FOUND,
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_ => http::StatusCode::BAD_REQUEST,
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}
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}
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fn error_response(&self) -> actix_web::HttpResponse {
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if let Some(message) = &self.message {
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actix_web::HttpResponse::build(self.status_code()).json(ApiError {
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error: message.into(),
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})
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} else {
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actix_web::HttpResponse::build(self.status_code())
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.content_type("text/plain")
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.body(self.inner.to_string())
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}
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}
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}
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