Refactor: Extract new mod error

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

crates/binstalk-git-repo-api/src/gh_api_client.rs

@@ -16,7 +16,9 @@ use percent_encoding::{
 use tokio::sync::OnceCell;
 
 mod request;
-pub use request::{GhApiContextError, GhApiError, GhGraphQLErrors};
+
+mod error;
+pub use error::{GhApiContextError, GhApiError, GhGraphQLErrors};
 
 /// default retry duration if x-ratelimit-reset is not found in response header
 const DEFAULT_RETRY_DURATION: Duration = Duration::from_secs(10 * 60);

crates/binstalk-git-repo-api/src/gh_api_client/request.rs

@@ -1,59 +1,19 @@
 use std::{
     borrow::Borrow,
     collections::HashSet,
-    error, fmt,
+    fmt,
     hash::{Hash, Hasher},
-    io,
     sync::OnceLock,
     time::Duration,
 };
 
 use binstalk_downloader::remote::{header::HeaderMap, StatusCode, Url};
-use compact_str::{CompactString, ToCompactString};
-use serde::{de::Deserializer, Deserialize, Serialize};
+use compact_str::CompactString;
+use serde::{Deserialize, Serialize};
 use serde_json::to_string as to_json_string;
-use thiserror::Error as ThisError;
 use tracing::debug;
 
-use super::{percent_encode_http_url_path, remote, GhRelease};
-
-#[derive(ThisError, Debug)]
-#[error("Context: '{context}', err: '{err}'")]
-pub struct GhApiContextError {
-    context: CompactString,
-    #[source]
-    err: GhApiError,
-}
-
-#[derive(ThisError, Debug)]
-#[non_exhaustive]
-pub enum GhApiError {
-    #[error("IO Error: {0}")]
-    Io(#[from] io::Error),
-
-    #[error("Remote Error: {0}")]
-    Remote(#[from] remote::Error),
-
-    #[error("Failed to parse url: {0}")]
-    InvalidUrl(#[from] url::ParseError),
-
-    /// A wrapped error providing the context the error is about.
-    #[error(transparent)]
-    Context(Box<GhApiContextError>),
-
-    #[error("Remote failed to process GraphQL query: {0}")]
-    GraphQLErrors(#[from] GhGraphQLErrors),
-}
-
-impl GhApiError {
-    /// Attach context to [`GhApiError`]
-    pub fn context(self, context: impl fmt::Display) -> Self {
-        Self::Context(Box::new(GhApiContextError {
-            context: context.to_compact_string(),
-            err: self,
-        }))
-    }
-}
+use super::{percent_encode_http_url_path, remote, GhApiError, GhGraphQLErrors, GhRelease};
 
 // Only include fields we do care about
 
@@ -169,99 +129,6 @@ enum GraphQLResponse {
     Errors(GhGraphQLErrors),
 }
 
-#[derive(Debug, Deserialize)]
-pub struct GhGraphQLErrors(Box<[GraphQLError]>);
-
-impl GhGraphQLErrors {
-    fn is_rate_limited(&self) -> bool {
-        self.0
-            .iter()
-            .any(|error| matches!(error.error_type, GraphQLErrorType::RateLimited))
-    }
-}
-
-impl error::Error for GhGraphQLErrors {}
-
-impl fmt::Display for GhGraphQLErrors {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        let last_error_index = self.0.len() - 1;
-
-        for (i, error) in self.0.iter().enumerate() {
-            write!(
-                f,
-                "type: '{error_type}', msg: '{msg}'",
-                error_type = error.error_type,
-                msg = error.message,
-            )?;
-
-            for location in error.locations.as_deref().into_iter().flatten() {
-                write!(
-                    f,
-                    ", occured on query line {line} col {col}",
-                    line = location.line,
-                    col = location.column
-                )?;
-            }
-
-            for (k, v) in &error.others {
-                write!(f, ", {k}: {v}")?;
-            }
-
-            if i < last_error_index {
-                f.write_str("\n")?;
-            }
-        }
-
-        Ok(())
-    }
-}
-
-#[derive(Debug, Deserialize)]
-struct GraphQLError {
-    message: CompactString,
-    locations: Option<Box<[GraphQLLocation]>>,
-
-    #[serde(rename = "type")]
-    error_type: GraphQLErrorType,
-
-    #[serde(flatten, with = "tuple_vec_map")]
-    others: Vec<(CompactString, serde_json::Value)>,
-}
-
-#[derive(Debug)]
-enum GraphQLErrorType {
-    RateLimited,
-    Other(CompactString),
-}
-
-impl fmt::Display for GraphQLErrorType {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.write_str(match self {
-            GraphQLErrorType::RateLimited => "RATE_LIMITED",
-            GraphQLErrorType::Other(s) => s,
-        })
-    }
-}
-
-impl<'de> Deserialize<'de> for GraphQLErrorType {
-    fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
-    where
-        D: Deserializer<'de>,
-    {
-        let s = CompactString::deserialize(deserializer)?;
-        Ok(match &*s {
-            "RATE_LIMITED" => GraphQLErrorType::RateLimited,
-            _ => GraphQLErrorType::Other(s),
-        })
-    }
-}
-
-#[derive(Debug, Deserialize)]
-struct GraphQLLocation {
-    line: u64,
-    column: u64,
-}
-
 #[derive(Deserialize)]
 struct GraphQLData {
     repository: Option<GraphQLRepo>,
@@ -415,6 +282,7 @@ pub(super) async fn fetch_release_artifacts(
 #[cfg(test)]
 mod test {
     use super::*;
+    use crate::gh_api_client::error::GraphQLErrorType;
     use serde::de::value::{BorrowedStrDeserializer, Error};
 
     macro_rules! assert_matches {