1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98

//! Adds support for the error-chain crate.
//!
//! **Feature:** `with_error_chain` (disabled by default)
//!
//! Errors created by the `error-chain` crate can be logged with the
//! `error_chain` integration.
//!
//! # Example
//!
//! ```no_run
//! # #[macro_use] extern crate error_chain;
//! # error_chain! {}
//! use sentry::integrations::error_chain::capture_error_chain;
//! # fn function_that_might_fail() -> Result<()> { Ok(()) }
//! # fn test() -> Result<()> {
//! let result = match function_that_might_fail() {
//!     Ok(result) => result,
//!     Err(err) => {
//!         capture_error_chain(&err);
//!         return Err(err);
//!     }
//! };
//! # Ok(()) }
//! ```
use std::fmt::{Debug, Display};

use error_chain::ChainedError;

use crate::backtrace_support::{backtrace_to_stacktrace, error_typename};
use crate::hub::Hub;
use crate::internals::Uuid;
use crate::protocol::{Event, Exception, Level};

fn exceptions_from_error_chain<T>(error: &T) -> Vec<Exception>
where
    T: ChainedError,
    T::ErrorKind: Debug + Display,
{
    let mut rv = vec![];

    rv.push(Exception {
        ty: error_typename(error.kind()),
        value: Some(error.kind().to_string()),
        stacktrace: error_chain::ChainedError::backtrace(error).and_then(backtrace_to_stacktrace),
        ..Default::default()
    });

    for error in error.iter().skip(1) {
        rv.push(Exception {
            ty: error_typename(error),
            value: Some(error.to_string()),
            ..Default::default()
        })
    }

    rv
}

/// Creates an event from an error chain.
pub fn event_from_error_chain<T>(e: &T) -> Event<'static>
where
    T: ChainedError,
    T::ErrorKind: Debug + Display,
{
    Event {
        exception: exceptions_from_error_chain(e).into(),
        level: Level::Error,
        ..Default::default()
    }
}

/// Captures an error chain.
pub fn capture_error_chain<T>(e: &T) -> Uuid
where
    T: ChainedError,
    T::ErrorKind: Debug + Display,
{
    Hub::with_active(|hub| hub.capture_error_chain(e))
}

/// Hub extension methods for working with error chain
pub trait ErrorChainHubExt {
    /// Captures an error chain on a specific hub.
    fn capture_error_chain<T>(&self, e: &T) -> Uuid
    where
        T: ChainedError,
        T::ErrorKind: Debug + Display;
}

impl ErrorChainHubExt for Hub {
    fn capture_error_chain<T>(&self, e: &T) -> Uuid
    where
        T: ChainedError,
        T::ErrorKind: Debug + Display,
    {
        self.capture_event(event_from_error_chain(e))
    }
}