reqwest_graphql/
error.rs

1use reqwest::Error;
2use serde::Deserialize;
3use std::collections::HashMap;
4use std::fmt;
5use std::fmt::Formatter;
6
7pub struct GraphQLError {
8    message: String,
9    json: Option<Vec<GraphQLErrorMessage>>,
10}
11
12// https://spec.graphql.org/June2018/#sec-Errors
13#[derive(Deserialize, Debug)]
14pub struct GraphQLErrorMessage {
15    message: String,
16    locations: Option<Vec<GraphQLErrorLocation>>,
17    extensions: Option<HashMap<String, String>>,
18    path: Option<Vec<GraphQLErrorPathParam>>,
19}
20
21#[derive(Deserialize, Debug)]
22pub struct GraphQLErrorLocation {
23    line: u32,
24    column: u32,
25}
26
27#[derive(Deserialize, Debug)]
28#[serde(untagged)]
29pub enum GraphQLErrorPathParam {
30    String(String),
31    Number(u32),
32}
33
34impl GraphQLError {
35    pub fn from_str(message: &str) -> Self {
36        Self {
37            message: String::from(message),
38            json: None,
39        }
40    }
41
42    pub fn from_json(json: Vec<GraphQLErrorMessage>) -> Self {
43        Self {
44            message: String::from("Look at json field for more details"),
45            json: Some(json),
46        }
47    }
48
49    pub fn message(&self) -> &str {
50        &self.message
51    }
52
53    pub fn json(&self) -> &Option<Vec<GraphQLErrorMessage>> {
54        &self.json
55    }
56}
57
58fn format(err: &GraphQLError, f: &mut Formatter<'_>) -> fmt::Result {
59    // Print the main error message
60    writeln!(f, "\nGQLClient Error: {}", err.message)?;
61
62    // Check if query errors have been received
63    if err.json.is_none() {
64        return Ok(());
65    }
66
67    let errors = err.json.as_ref();
68
69    for err in errors.unwrap() {
70        writeln!(f, "Message: {}", err.message)?;
71    }
72
73    Ok(())
74}
75
76impl fmt::Display for GraphQLError {
77    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
78        format(self, f)
79    }
80}
81
82impl fmt::Debug for GraphQLError {
83    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
84        format(&self, f)
85    }
86}
87
88impl std::convert::From<reqwest::Error> for GraphQLError {
89    fn from(error: Error) -> Self {
90        Self {
91            message: error.to_string(),
92            json: None,
93        }
94    }
95}
reqwest_graphql/error.rs

reqwest_graphql/
error.rs
