aws_sdk_ec2/
ec2_query_errors.rs

1// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.
2/*
3 * Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7use aws_smithy_types::error::metadata::{Builder as ErrorMetadataBuilder, ErrorMetadata};
8use aws_smithy_xml::decode::{try_data, Document, ScopedDecoder, XmlDecodeError};
9
10#[allow(unused)]
11pub fn body_is_error(body: &[u8]) -> Result<bool, XmlDecodeError> {
12    let mut doc = Document::try_from(body)?;
13    let scoped = doc.root_element()?;
14    Ok(scoped.start_el().matches("Response"))
15}
16
17pub fn parse_error_metadata(body: &[u8]) -> Result<ErrorMetadataBuilder, XmlDecodeError> {
18    let mut doc = Document::try_from(body)?;
19    let mut root = doc.root_element()?;
20    let mut err_builder = ErrorMetadata::builder();
21    while let Some(mut tag) = root.next_tag() {
22        if tag.start_el().local() == "Errors" {
23            while let Some(mut error_tag) = tag.next_tag() {
24                if let "Error" = error_tag.start_el().local() {
25                    while let Some(mut error_field) = error_tag.next_tag() {
26                        match error_field.start_el().local() {
27                            "Code" => {
28                                err_builder = err_builder.code(try_data(&mut error_field)?);
29                            }
30                            "Message" => {
31                                err_builder = err_builder.message(try_data(&mut error_field)?);
32                            }
33                            _ => {}
34                        }
35                    }
36                }
37            }
38        }
39    }
40    Ok(err_builder)
41}
42
43#[allow(unused)]
44pub fn error_scope<'a, 'b>(doc: &'a mut Document<'b>) -> Result<ScopedDecoder<'b, 'a>, XmlDecodeError> {
45    let root = doc
46        .next_start_element()
47        .ok_or_else(|| XmlDecodeError::custom("no root found searching for an Error"))?;
48    if !root.matches("Response") {
49        return Err(XmlDecodeError::custom("expected Response as root"));
50    }
51
52    while let Some(el) = doc.next_start_element() {
53        if el.matches("Errors") && el.depth() == 1 {
54            while let Some(el) = doc.next_start_element() {
55                if el.matches("Error") && el.depth() == 2 {
56                    return Ok(doc.scoped_to(el));
57                }
58            }
59        }
60        // otherwise, ignore it
61    }
62    Err(XmlDecodeError::custom("no error found inside of response"))
63}
64
65#[cfg(test)]
66mod test {
67    use super::{body_is_error, parse_error_metadata};
68    use crate::ec2_query_errors::error_scope;
69    use aws_smithy_xml::decode::Document;
70
71    #[test]
72    fn parse_wrapped_error() {
73        let xml = br#"
74        <Response>
75            <Errors>
76                <Error>
77                    <Code>InvalidGreeting</Code>
78                    <Message>Hi</Message>
79                    <AnotherSetting>setting</AnotherSetting>
80                    <Ignore><This/></Ignore>
81                </Error>
82            </Errors>
83            <RequestId>foo-id</RequestId>
84        </Response>
85        "#;
86        assert!(body_is_error(xml).unwrap());
87        let parsed = parse_error_metadata(xml).expect("valid xml").build();
88        assert_eq!(parsed.message(), Some("Hi"));
89        assert_eq!(parsed.code(), Some("InvalidGreeting"));
90    }
91
92    #[test]
93    fn test_error_scope() {
94        let xml: &[u8] = br#"
95        <Response>
96            <RequestId>foo-id</RequestId>
97            <MorePreamble>foo-id</RequestId>
98            <Sneaky><Error>These are not the errors you are looking for</Error></Sneaky>
99            <Errors>
100                <Sneaky><Error>These are not the errors you are looking for</Error></Sneaky>
101                <Error>
102                    <Code>InvalidGreeting</Code>
103                    <Message>Hi</Message>
104                    <AnotherSetting>setting</AnotherSetting>
105                    <Ignore><This/></Ignore>
106                </Error>
107            </Errors>
108            <RequestId>foo-id</RequestId>
109        </Response>
110        "#;
111        let mut doc = Document::try_from(xml).expect("valid");
112        let mut error = error_scope(&mut doc).expect("contains error");
113        let mut keys = vec![];
114        while let Some(tag) = error.next_tag() {
115            keys.push(tag.start_el().local().to_owned());
116            // read this the full contents of this element
117        }
118        assert_eq!(keys, vec!["Code", "Message", "AnotherSetting", "Ignore"])
119    }
120}
aws_sdk_ec2/ec2_query_errors.rs

aws_sdk_ec2/
ec2_query_errors.rs
