split meilisearch-http and meilisearch-lib

meilisearch-lib/src/error.rs

@@ -0,0 +1,62 @@
+use std::error::Error;
+use std::fmt;
+
+use meilisearch_error::{Code, ErrorCode};
+use milli::UserError;
+
+macro_rules! internal_error {
+    ($target:ty : $($other:path), *) => {
+        $(
+            impl From<$other> for $target {
+                fn from(other: $other) -> Self {
+                    Self::Internal(Box::new(other))
+                }
+            }
+        )*
+    }
+}
+
+#[derive(Debug)]
+pub struct MilliError<'a>(pub &'a milli::Error);
+
+impl Error for MilliError<'_> {}
+
+impl fmt::Display for MilliError<'_> {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
+impl ErrorCode for MilliError<'_> {
+    fn error_code(&self) -> Code {
+        match self.0 {
+            milli::Error::InternalError(_) => Code::Internal,
+            milli::Error::IoError(_) => Code::Internal,
+            milli::Error::UserError(ref error) => {
+                match error {
+                    // TODO: wait for spec for new error codes.
+                    | UserError::SerdeJson(_)
+                    | UserError::MaxDatabaseSizeReached
+                    | UserError::InvalidCriterionName { .. }
+                    | UserError::InvalidDocumentId { .. }
+                    | UserError::InvalidStoreFile
+                    | UserError::NoSpaceLeftOnDevice
+                    | UserError::InvalidAscDescSyntax { .. }
+                    | UserError::DocumentLimitReached => Code::Internal,
+                    UserError::AttributeLimitReached => Code::MaxFieldsLimitExceeded,
+                    UserError::InvalidFilter(_) => Code::Filter,
+                    UserError::InvalidFilterAttribute(_) => Code::Filter,
+                    UserError::InvalidSortName { .. } => Code::Sort,
+                    UserError::MissingDocumentId { .. } => Code::MissingDocumentId,
+                    UserError::MissingPrimaryKey => Code::MissingPrimaryKey,
+                    UserError::PrimaryKeyCannotBeChanged => Code::PrimaryKeyAlreadyPresent,
+                    UserError::PrimaryKeyCannotBeReset => Code::PrimaryKeyAlreadyPresent,
+                    UserError::SortRankingRuleMissing => Code::Sort,
+                    UserError::UnknownInternalDocumentId { .. } => Code::DocumentNotFound,
+                    UserError::InvalidFacetsDistribution { .. } => Code::BadRequest,
+                    UserError::InvalidSortableAttribute { .. } => Code::Sort,
+                }
+            }
+        }
+    }
+}