redis-client 0.5.0

Redis client in Rust
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
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
146
147
148

use std::collections::HashMap;
use std::fmt;
use std::str;

#[derive(Debug, Clone)]
pub enum RedisResult {
    Array(Vec<RedisResult>),
    Bytes(Vec<u8>),
    String(String),
    Int(i64),
    Nil,
}

impl RedisResult {
    /// Method to convert a RedisResult into another type
    pub fn convert<T: From<RedisResult>>(self) -> T {
        self.into()
    }
}

impl fmt::Display for RedisResult {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match *self {
            RedisResult::Array(ref value) => write!(f, "{:?}", value),
            RedisResult::Bytes(ref value) => write!(f, "{:?}", value),
            RedisResult::String(ref value) => write!(f, "{:?}", value),
            RedisResult::Int(ref value) => write!(f, "{:?}", value),
            RedisResult::Nil => write!(f, "null"),
        }
    }
}

impl From<RedisResult> for String {
    fn from(result: RedisResult) -> String {
        match result {
            RedisResult::Array(value) => {
                let mut retval: String = "[".to_string();
                for res in value {
                    retval = retval + &res.convert::<String>() + &",".to_string();
                }
                retval = retval + &"]".to_string();
                retval
            },
            RedisResult::Bytes(value) => {
                let result = str::from_utf8(&value);
                match result {
                    Ok(str_value) => str_value.to_string(),
                    Err(err) => err.to_string(),
                }
            },
            RedisResult::String(value) => value,
            RedisResult::Int(value) => value.to_string(),
            RedisResult::Nil => "null".to_string(),
        }
    }
}


impl From<RedisResult> for Vec<u8> {
    fn from(result: RedisResult) -> Vec<u8> {
        match result {
            RedisResult::Array(value) => RedisResult::Array(value).convert::<String>().into_bytes(),
            RedisResult::Bytes(value) => value,
            RedisResult::String(value) => value.into_bytes(),
            RedisResult::Int(value) => value.to_string().into_bytes(),
            RedisResult::Nil => vec![],
        }
    }
}

impl From<RedisResult> for Vec<String> {
    fn from(result: RedisResult) -> Vec<String> {
        match result {
            RedisResult::Array(value) => {
                let mut retval = Vec::new();
                for res in value {
                    retval.push(res.convert::<String>());
                }
                retval
            },
            RedisResult::Bytes(value) => {
                let result = str::from_utf8(&value);
                match result {
                    Ok(str_value) => vec![str_value.to_string()],
                    Err(err) => vec![err.to_string()],
                }
            },
            RedisResult::String(value) => vec![value],
            RedisResult::Int(value) => vec![value.to_string()],
            RedisResult::Nil => vec![],
        }
    }
}

impl From<RedisResult> for HashMap<String, String> {
    fn from(result: RedisResult) -> HashMap<String, String> {
        match result {
            RedisResult::Array(value) => {
                let mut retval = HashMap::new();
                let mut key = String::new();
                for (index, res) in value.into_iter().enumerate() {
                    if index % 2 == 0 {
                        key = res.convert::<String>();
                    } else {
                        retval.insert(key.to_string(), res.convert::<String>());
                    }
                }
                retval
            },
            RedisResult::Bytes(value) => {
                let str_value = RedisResult::Bytes(value).convert::<String>();
                let mut retval = HashMap::new();
                retval.insert("Stringified value".to_string(), str_value);
                retval
            },
            RedisResult::String(value) => {
                let mut retval = HashMap::new();
                retval.insert("Stringified value".to_string(), value);
                retval
            },
            RedisResult::Int(value) => {
                let str_value = RedisResult::Int(value).convert::<String>();
                let mut retval = HashMap::new();
                retval.insert("Stringified value".to_string(), str_value);
                retval
            },
            RedisResult::Nil => {
                let str_value = RedisResult::Nil.convert::<String>();
                let mut retval = HashMap::new();
                retval.insert("Stringified value".to_string(), str_value);
                retval
            },
        }
    }
}

impl From<RedisResult> for i64 {
    fn from(result: RedisResult) -> i64 {
        match result {
            RedisResult::Array(_value) => 0,
            RedisResult::Bytes(_value) => 0,
            RedisResult::String(_value) => 0,
            RedisResult::Int(value) => value,
            RedisResult::Nil => 0,
        }
    }
}