algorithmia 1.0.0

Client for calling algorithms hosted on the Algorithmia marketplace
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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145

use std::error::Error as StdError;
use std::{fmt, io, str, string};
use rustc_serialize::{json, base64};
use hyper;


/// Errors that may be returned by this library
#[derive(Debug)]
pub enum Error {
    ApiError(ApiError),
    ContentTypeError(String),
    DataTypeError(String),
    DataPathError(String),
    HttpError(hyper::error::Error),
    DecoderError(json::DecoderError),
    EncoderError(json::EncoderError),
    FromBase64Error(base64::FromBase64Error),
    IoError(io::Error),
    Utf8Error(str::Utf8Error),
}

#[derive(RustcDecodable, Debug)]
pub struct ApiError {
    pub message: String,
    pub stacktrace: Option<String>,
}

/// Struct for decoding Algorithmia API error responses
#[derive(RustcDecodable, Debug)]
pub struct ApiErrorResponse {
    pub error: ApiError,
}


pub fn decode(json_str: &str) -> Error {
    match json::decode::<ApiErrorResponse>(json_str) {
        Ok(err_res) => err_res.error.into(),
        Err(err) => Error::DecoderError(err),
    }
}

impl StdError for ApiError {
    fn description(&self) -> &str {
        &self.message
    }
}

impl StdError for Error {
    fn description(&self) -> &str {
        match *self {
            Error::ApiError(ref e) => e.description(),
            Error::ContentTypeError(ref msg) => &msg,
            Error::DataTypeError(ref msg) => &msg,
            Error::DataPathError(ref msg) => &msg,
            Error::HttpError(ref e) => e.description(),
            Error::DecoderError(ref e) => e.description(),
            Error::EncoderError(ref e) => e.description(),
            Error::FromBase64Error(ref e) => e.description(),
            Error::IoError(ref e) => e.description(),
            Error::Utf8Error(ref e) => e.description(),
        }
    }

    fn cause(&self) -> Option<&StdError> {
        match *self {
            Error::HttpError(ref e) => Some(e),
            Error::DecoderError(ref e) => Some(e),
            Error::EncoderError(ref e) => Some(e),
            Error::FromBase64Error(ref e) => Some(e),
            Error::IoError(ref e) => Some(e),
            Error::Utf8Error(ref e) => Some(e),
            _ => None,
        }
    }
}


//
// Implement Display trait
//

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str(self.description())
    }
}

impl fmt::Display for ApiError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str(self.description())
    }
}


//
// Implement From trait (used by try! macro)
//

impl From<ApiError> for Error {
    fn from(err: ApiError) -> Error {
        Error::ApiError(err)
    }
}

impl From<io::Error> for Error {
    fn from(err: io::Error) -> Error {
        Error::IoError(err)
    }
}

impl From<hyper::error::Error> for Error {
    fn from(err: hyper::error::Error) -> Error {
        Error::HttpError(err)
    }
}

impl From<json::DecoderError> for Error {
    fn from(err: json::DecoderError) -> Error {
        Error::DecoderError(err)
    }
}

impl From<json::EncoderError> for Error {
    fn from(err: json::EncoderError) -> Error {
        Error::EncoderError(err)
    }
}

impl From<base64::FromBase64Error> for Error {
    fn from(err: base64::FromBase64Error) -> Error {
        Error::FromBase64Error(err)
    }
}

impl From<str::Utf8Error> for Error {
    fn from(err: str::Utf8Error) -> Error {
        Error::Utf8Error(err)
    }
}

impl From<string::FromUtf8Error> for Error {
    fn from(err: string::FromUtf8Error) -> Error {
        Error::Utf8Error(err.utf8_error())
    }
}