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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175

#![warn(missing_docs)]
//! The module contains Rust representation of Cassandra consistency levels.
use std::io;
use std::convert::From;
use std::default::Default;
use super::{IntoBytes, FromCursor};
use super::types::*;
use super::FromBytes;

/// `Consistency` is an enum which represents Cassandra's consistency levels.
/// To find more details about each consistency level please refer to Cassandra official docs.
#[derive(Debug, PartialEq, Clone)]
pub enum Consistency {
    #[allow(missing_docs)]
    Any,
    #[allow(missing_docs)]
    One,
    #[allow(missing_docs)]
    Two,
    #[allow(missing_docs)]
    Three,
    #[allow(missing_docs)]
    Quorum,
    #[allow(missing_docs)]
    All,
    #[allow(missing_docs)]
    LocalQuorum,
    #[allow(missing_docs)]
    EachQuorum,
    #[allow(missing_docs)]
    Serial,
    #[allow(missing_docs)]
    LocalSerial,
    #[allow(missing_docs)]
    LocalOne
}

impl Default for Consistency {
    fn default() -> Consistency {
        Consistency::One
    }
}

impl IntoBytes for Consistency {
    fn into_cbytes(&self) -> Vec<u8> {
        return match self {
            &Consistency::Any => to_short(0x0000),
            &Consistency::One => to_short(0x0001),
            &Consistency::Two => to_short(0x0002),
            &Consistency::Three => to_short(0x0003),
            &Consistency::Quorum => to_short(0x0004),
            &Consistency::All => to_short(0x0005),
            &Consistency::LocalQuorum => to_short(0x0006),
            &Consistency::EachQuorum => to_short(0x0007),
            &Consistency::Serial => to_short(0x0008),
            &Consistency::LocalSerial => to_short(0x0009),
            &Consistency::LocalOne => to_short(0x000A)
        };
    }
}

impl From<i32> for Consistency {
    fn from(bytes: i32) -> Consistency {
        return match bytes {
            0x0000 => Consistency::Any,
            0x0001 => Consistency::One,
            0x0002 => Consistency::Two,
            0x0003 => Consistency::Three,
            0x0004 => Consistency::Quorum,
            0x0005 => Consistency::All,
            0x0006 => Consistency::LocalQuorum,
            0x0007 => Consistency::EachQuorum,
            0x0008 => Consistency::Serial,
            0x0009 => Consistency::LocalSerial,
            0x000A => Consistency::LocalOne,
            _ => unreachable!()
        };
    }
}

impl FromBytes for Consistency {
    fn from_bytes(bytes: Vec<u8>) -> Consistency {
        return match from_bytes(bytes.clone()) {
            0x0000 => Consistency::Any,
            0x0001 => Consistency::One,
            0x0002 => Consistency::Two,
            0x0003 => Consistency::Three,
            0x0004 => Consistency::Quorum,
            0x0005 => Consistency::All,
            0x0006 => Consistency::LocalQuorum,
            0x0007 => Consistency::EachQuorum,
            0x0008 => Consistency::Serial,
            0x0009 => Consistency::LocalSerial,
            0x000A => Consistency::LocalOne,
            _ => unreachable!()
        };
    }
}

impl FromCursor for Consistency {
    fn from_cursor(mut cursor: &mut io::Cursor<Vec<u8>>) -> Consistency {
        let consistency_num = CIntShort::from_cursor(&mut cursor) as i32;
        return Consistency::from(consistency_num);
    }
}



#[cfg(test)]
mod tests {
    use std::io::Cursor;
    use {IntoBytes, FromBytes, FromCursor};
    use super::*;

    #[test]
    fn test_consistency_into_cbytes() {
        assert_eq!(Consistency::Any.into_cbytes(), vec![0, 0]);
        assert_eq!(Consistency::One.into_cbytes(), vec![0, 1]);
        assert_eq!(Consistency::Two.into_cbytes(), vec![0, 2]);
        assert_eq!(Consistency::Three.into_cbytes(), vec![0, 3]);
        assert_eq!(Consistency::Quorum.into_cbytes(), vec![0, 4]);
        assert_eq!(Consistency::All.into_cbytes(), vec![0, 5]);
        assert_eq!(Consistency::LocalQuorum.into_cbytes(), vec![0, 6]);
        assert_eq!(Consistency::EachQuorum.into_cbytes(), vec![0, 7]);
        assert_eq!(Consistency::Serial.into_cbytes(), vec![0, 8]);
        assert_eq!(Consistency::LocalSerial.into_cbytes(), vec![0, 9]);
        assert_eq!(Consistency::LocalOne.into_cbytes(), vec![0, 10]);
    }

    #[test]
    fn test_consistency_from() {
        assert_eq!(Consistency::from(0), Consistency::Any);
        assert_eq!(Consistency::from(1), Consistency::One);
        assert_eq!(Consistency::from(2), Consistency::Two);
        assert_eq!(Consistency::from(3), Consistency::Three);
        assert_eq!(Consistency::from(4), Consistency::Quorum);
        assert_eq!(Consistency::from(5), Consistency::All);
        assert_eq!(Consistency::from(6), Consistency::LocalQuorum);
        assert_eq!(Consistency::from(7), Consistency::EachQuorum);
        assert_eq!(Consistency::from(8), Consistency::Serial);
        assert_eq!(Consistency::from(9), Consistency::LocalSerial);
        assert_eq!(Consistency::from(10), Consistency::LocalOne);
    }

    #[test]
    fn test_consistency_from_bytes() {
        assert_eq!(Consistency::from_bytes(vec![0, 0]), Consistency::Any);
        assert_eq!(Consistency::from_bytes(vec![0, 1]), Consistency::One);
        assert_eq!(Consistency::from_bytes(vec![0, 2]), Consistency::Two);
        assert_eq!(Consistency::from_bytes(vec![0, 3]), Consistency::Three);
        assert_eq!(Consistency::from_bytes(vec![0, 4]), Consistency::Quorum);
        assert_eq!(Consistency::from_bytes(vec![0, 5]), Consistency::All);
        assert_eq!(Consistency::from_bytes(vec![0, 6]), Consistency::LocalQuorum);
        assert_eq!(Consistency::from_bytes(vec![0, 7]), Consistency::EachQuorum);
        assert_eq!(Consistency::from_bytes(vec![0, 8]), Consistency::Serial);
        assert_eq!(Consistency::from_bytes(vec![0, 9]), Consistency::LocalSerial);
        assert_eq!(Consistency::from_bytes(vec![0, 10]), Consistency::LocalOne);
    }

    #[test]
    fn test_consistency_from_cursor() {
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 0])), Consistency::Any);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 1])), Consistency::One);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 2])), Consistency::Two);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 3])), Consistency::Three);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 4])), Consistency::Quorum);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 5])), Consistency::All);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 6])), Consistency::LocalQuorum);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 7])), Consistency::EachQuorum);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 8])), Consistency::Serial);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 9])), Consistency::LocalSerial);
        assert_eq!(Consistency::from_cursor(&mut Cursor::new(vec![0, 10])), Consistency::LocalOne);
    }

}