357 lines
8.1 KiB
Rust
357 lines
8.1 KiB
Rust
use graphql_parser::query::{ParseError, Value};
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use graphql_parser::Pos;
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use std::fmt::Debug;
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/// FieldError type
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#[derive(Clone, Debug)]
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pub struct FieldError(pub String, pub Option<serde_json::Value>);
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impl FieldError {
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#[doc(hidden)]
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pub fn into_error(self, pos: Pos) -> Error {
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Error::Query {
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pos,
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path: None,
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err: QueryError::FieldError {
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err: self.0,
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extended_error: self.1,
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},
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}
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}
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#[doc(hidden)]
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pub fn into_error_with_path(self, pos: Pos, path: serde_json::Value) -> Error {
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Error::Query {
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pos,
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path: Some(path),
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err: QueryError::FieldError {
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err: self.0,
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extended_error: self.1,
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},
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}
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}
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}
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/// FieldResult type
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pub type FieldResult<T> = std::result::Result<T, FieldError>;
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impl<E> From<E> for FieldError
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where
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E: std::fmt::Display + Send + Sync + 'static,
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{
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fn from(err: E) -> Self {
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FieldError(format!("{}", err), None)
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}
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}
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#[allow(missing_docs)]
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pub trait ErrorExtensions
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where
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Self: Sized,
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{
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fn extend(&self) -> FieldError;
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fn extend_with<C>(self, cb: C) -> FieldError
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where
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C: FnOnce(&Self) -> serde_json::Value,
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{
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let name = self.extend().0;
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if let Some(mut base) = self.extend().1 {
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let mut cb_res = cb(&self);
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if let Some(base_map) = base.as_object_mut() {
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if let Some(cb_res_map) = cb_res.as_object_mut() {
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base_map.append(cb_res_map);
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}
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return FieldError(name, Some(serde_json::json!(base_map)));
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} else {
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return FieldError(name, Some(cb_res));
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}
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}
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FieldError(name, Some(cb(&self)))
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}
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}
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impl ErrorExtensions for FieldError {
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fn extend(&self) -> FieldError {
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self.clone()
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}
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}
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// implementing for &E instead of E gives the user the possibility to implement for E which does
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// not conflict with this implementation acting as a fallback.
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impl<E: std::fmt::Display> ErrorExtensions for &E {
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fn extend(&self) -> FieldError {
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FieldError(format!("{}", self), None)
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}
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}
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#[allow(missing_docs)]
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pub trait ResultExt<T, E>
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where
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Self: Sized,
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{
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fn extend_err<CB>(self, cb: CB) -> FieldResult<T>
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where
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CB: FnOnce(&E) -> serde_json::Value;
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fn extend(self) -> FieldResult<T>;
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}
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// This is implemented on E and not &E which means it cannot be used on foreign types.
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// (see example).
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impl<T, E> ResultExt<T, E> for std::result::Result<T, E>
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where
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E: ErrorExtensions + Send + Sync + 'static,
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{
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fn extend_err<C>(self, cb: C) -> FieldResult<T>
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where
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C: FnOnce(&E) -> serde_json::Value,
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{
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match self {
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Err(err) => Err(err.extend_with(|e| cb(e))),
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Ok(value) => Ok(value),
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}
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}
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fn extend(self) -> FieldResult<T> {
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match self {
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Err(err) => Err(err.extend()),
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Ok(value) => Ok(value),
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}
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}
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}
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/// Error for query
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#[derive(Debug, Error)]
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#[allow(missing_docs)]
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pub enum QueryError {
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#[error("Not supported.")]
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NotSupported,
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#[error("Expected type \"{expect}\", found {actual}.")]
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ExpectedType {
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/// Expect input type
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expect: String,
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/// Actual input type
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actual: Value,
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},
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#[error("Expected type \"{expect}\", found {actual}.")]
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ExpectedJsonType {
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/// Expect input JSON type
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expect: String,
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/// Actual input JSON type
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actual: serde_json::Value,
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},
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#[error("Cannot query field \"{field_name}\" on type \"{object}\".")]
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FieldNotFound {
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/// Field name
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field_name: String,
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/// Object name
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object: String,
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},
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#[error("Missing operation")]
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MissingOperation,
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#[error("Unknown operation named \"{name}\"")]
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UnknownOperationNamed {
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/// Operation name for query
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name: String,
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},
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#[error("Type \"{object}\" must have a selection of subfields.")]
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MustHaveSubFields {
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/// Object name
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object: String,
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},
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#[error("Schema is not configured for mutations.")]
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NotConfiguredMutations,
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#[error("Schema is not configured for subscriptions.")]
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NotConfiguredSubscriptions,
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#[error("Invalid value for enum \"{ty}\".")]
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InvalidEnumValue {
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/// Enum type name
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ty: String,
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/// Enum value
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value: String,
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},
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#[error("Required field \"{field_name}\" for InputObject \"{object}\" does not exist.")]
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RequiredField {
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/// field name
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field_name: String,
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/// object name
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object: &'static str,
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},
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#[error("Variable \"${var_name}\" is not defined")]
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VarNotDefined {
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/// Variable name
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var_name: String,
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},
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#[error(
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"Directive \"{directive}\" argument \"{arg_name}\" of type \"{arg_type}\" is required, but it was not provided."
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)]
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RequiredDirectiveArgs {
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/// Directive name
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directive: &'static str,
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/// Argument name
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arg_name: &'static str,
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/// Argument type
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arg_type: &'static str,
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},
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#[error("Unknown directive \"{name}\".")]
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UnknownDirective {
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/// Directive name
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name: String,
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},
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#[error("Unknown fragment \"{name}\".")]
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UnknownFragment {
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// Fragment name
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name: String,
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},
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#[error("Object \"{object}\" does not implement interface \"{interface}\"")]
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NotImplementedInterface {
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/// Object name
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object: String,
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/// Interface name
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interface: String,
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},
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#[error("Unrecognized inline fragment \"{name}\" on type \"{object}\"")]
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UnrecognizedInlineFragment {
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/// Object name
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object: String,
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/// Inline fragment name
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name: String,
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},
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#[error("Too complex")]
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TooComplex,
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#[error("Too deep")]
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TooDeep,
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#[error("Failed to resolve field: {err}")]
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FieldError {
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err: String,
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extended_error: Option<serde_json::Value>,
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},
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#[error("Entity not found")]
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EntityNotFound,
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#[error("\"__typename\" must be an existing string")]
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TypeNameNotExists,
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}
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impl QueryError {
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#[doc(hidden)]
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pub fn into_error(self, pos: Pos) -> Error {
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Error::Query {
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pos,
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path: None,
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err: self,
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}
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}
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}
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#[derive(Debug)]
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pub struct RuleError {
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pub locations: Vec<Pos>,
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pub message: String,
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}
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impl From<ParseError> for Error {
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fn from(err: ParseError) -> Self {
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let msg = err.to_string();
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let mut s = msg.splitn(2, '\n');
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let first = s.next().unwrap();
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let ln = &first[first.rfind(' ').unwrap() + 1..];
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let (line, column) = {
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let mut s = ln.splitn(2, ':');
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(
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s.next().unwrap().parse().unwrap(),
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s.next().unwrap().parse().unwrap(),
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)
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};
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let tail = s.next().unwrap();
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Error::Parse {
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line,
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column,
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message: tail.to_string(),
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}
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}
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}
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#[allow(missing_docs)]
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#[derive(Debug, Error)]
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pub enum ParseRequestError {
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#[error("{0}")]
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Io(std::io::Error),
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#[error("Invalid request: {0}")]
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InvalidRequest(serde_json::Error),
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#[error("Invalid files map: {0}")]
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InvalidFilesMap(serde_json::Error),
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#[error("Invalid multipart data: {0}")]
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InvalidMultipart(std::io::Error),
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#[error("Missing \"operators\" part")]
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MissingOperatorsPart,
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#[error("Missing \"map\" part")]
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MissingMapPart,
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#[error("Failed to read part data: {0}")]
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PartData(#[from] std::io::Error),
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#[error("It's not an upload operation")]
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NotUpload,
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#[error("Missing files")]
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MissingFiles,
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}
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#[allow(missing_docs)]
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#[derive(Debug, Error)]
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pub enum Error {
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#[error("Parse error: {message}")]
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Parse {
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line: usize,
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column: usize,
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message: String,
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},
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#[error("Query error: {err}")]
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Query {
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pos: Pos,
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path: Option<serde_json::Value>,
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err: QueryError,
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},
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#[error("Rule error")]
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Rule { errors: Vec<RuleError> },
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}
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