es-entity 0.15.0

Event Sourcing Entity Framework
Documentation 
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

use std::{error::Error, fmt, sync::Arc};

use crate::ConstraintKind;

/// Structured diagnostics. Attempted values are deliberately absent from Display.
#[derive(Debug, Clone)]
pub struct ConstraintDiagnostics {
    pub table: &'static str,
    pub constraint: &'static str,
    pub kind: ConstraintKind,
    source: Arc<sqlx::Error>,
}
impl fmt::Display for ConstraintDiagnostics {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            f,
            "constraint violation on {} ({})",
            self.table, self.constraint
        )
    }
}
impl Error for ConstraintDiagnostics {
    fn source(&self) -> Option<&(dyn Error + 'static)> {
        Some(self.source.as_ref())
    }
}

/// A known constraint and the typed write input, when it can be attributed.
/// Values may contain PII. Inspect deliberately; default Display never prints them.
#[derive(Debug, Clone)]
pub struct ConstraintConflict<V> {
    pub attempted: Option<V>,
    pub diagnostics: ConstraintDiagnostics,
}
impl<V> ConstraintConflict<V> {
    #[doc(hidden)]
    pub fn new(
        attempted: Option<V>,
        table: &'static str,
        constraint: &'static str,
        kind: ConstraintKind,
        source: sqlx::Error,
    ) -> Self {
        Self {
            attempted,
            diagnostics: ConstraintDiagnostics {
                table,
                constraint,
                kind,
                source: Arc::new(source),
            },
        }
    }
}
impl<V> fmt::Display for ConstraintConflict<V> {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        self.diagnostics.fmt(f)
    }
}
impl<V: fmt::Debug> Error for ConstraintConflict<V> {
    fn source(&self) -> Option<&(dyn Error + 'static)> {
        Some(&self.diagnostics)
    }
}