ark_grpc/
error.rs

1use std::error::Error as StdError;
2use std::fmt;
3
4type Source = Box<dyn StdError + Send + Sync + 'static>;
5
6pub struct Error {
7    inner: ErrorImpl,
8}
9
10struct ErrorImpl {
11    kind: Kind,
12    source: Option<Source>,
13}
14
15#[derive(Debug)]
16enum Kind {
17    Connect,
18    NotConnected,
19    Request,
20    Conversion,
21    EventStreamDisconnect,
22    EventStream,
23}
24
25impl Error {
26    fn new(kind: Kind) -> Self {
27        Self {
28            inner: ErrorImpl { kind, source: None },
29        }
30    }
31
32    pub(crate) fn with(mut self, source: impl Into<Source>) -> Self {
33        self.inner.source = Some(source.into());
34        self
35    }
36
37    pub(crate) fn connect(source: impl Into<Source>) -> Self {
38        Error::new(Kind::Connect).with(source)
39    }
40
41    pub(crate) fn not_connected() -> Self {
42        Error::new(Kind::NotConnected)
43    }
44
45    pub(crate) fn request(source: impl Into<Source>) -> Self {
46        Error::new(Kind::Request).with(source)
47    }
48
49    pub(crate) fn conversion(source: impl Into<Source>) -> Self {
50        Error::new(Kind::Conversion).with(source)
51    }
52
53    pub(crate) fn event_stream_disconnect() -> Self {
54        Error::new(Kind::EventStreamDisconnect)
55    }
56
57    pub(crate) fn event_stream(source: impl Into<Source>) -> Self {
58        Error::new(Kind::EventStream).with(source)
59    }
60
61    fn description(&self) -> &str {
62        match &self.inner.kind {
63            Kind::Connect => "failed to connect to Ark server",
64            Kind::NotConnected => "no connection to Ark server",
65            Kind::Request => "request failed",
66            Kind::Conversion => "failed to convert between types",
67            Kind::EventStreamDisconnect => "got disconnected from event stream",
68            Kind::EventStream => "error via event stream",
69        }
70    }
71}
72
73impl fmt::Debug for Error {
74    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
75        let mut f = f.debug_tuple("ark_grpc::Error");
76
77        f.field(&self.inner.kind);
78
79        if let Some(source) = &self.inner.source {
80            f.field(source);
81        }
82
83        f.finish()
84    }
85}
86
87impl fmt::Display for Error {
88    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
89        f.write_str(self.description())?;
90        if let Some(source) = self.source() {
91            f.write_str(&source.to_string())?;
92        }
93
94        Ok(())
95    }
96}
97
98impl StdError for Error {
99    fn source(&self) -> Option<&(dyn StdError + 'static)> {
100        self.inner
101            .source
102            .as_ref()
103            .map(|source| &**source as &(dyn StdError + 'static))
104    }
105}
ark_grpc/error.rs

ark_grpc/
error.rs
