netindex 3.0.1

Immutable IP-range and ASN indexes with borrowed payloads
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

//! Strided IDs preserve insertion identity without explicit per-row ID columns.

use std::net::{Ipv4Addr, Ipv6Addr};

use netindex::{Builder, Error, Limits, Reader, Target};

#[test]
fn independent_stride_fixture_preserves_ids_and_rejects_invalid_flags_and_overflow() {
    let bytes = include_bytes!("fixtures/strided-ids.nidx");
    let reader = Reader::open(bytes.as_slice(), Limits::default()).unwrap();
    let expected = [
        (
            0,
            Target::Network {
                address: Ipv4Addr::UNSPECIFIED.into(),
                prefix: 24,
            },
        ),
        (
            2,
            Target::Network {
                address: Ipv4Addr::from(256).into(),
                prefix: 24,
            },
        ),
        (1, Target::Address(Ipv6Addr::from(1u128).into())),
    ];
    let mut actual = Vec::new();
    reader
        .visit_all(|row| {
            actual.push((row.id, row.target));
            assert!(row.payload.is_empty());
            Ok::<_, Error>(())
        })
        .unwrap();

    assert_eq!(actual, expected);

    for (address, id) in [("0.0.0.1", 0), ("0.0.1.1", 2), ("::1", 1)] {
        let rows = reader.lookup_ip(address.parse().unwrap()).unwrap();

        assert_eq!(rows.len(), 1);
        assert_eq!(rows[0].id, id);
    }

    let mut invalid = bytes.to_vec();
    invalid[104] &= !0x80;

    assert!(matches!(
        Reader::open(invalid, Limits::default()),
        Err(Error::Invalid("packed block fields"))
    ));

    let mut overflow = bytes.to_vec();
    overflow[108..112].copy_from_slice(&(u32::MAX - 1).to_le_bytes());

    assert!(matches!(
        Reader::open(overflow, Limits::default()),
        Err(Error::Invalid("packed record ID"))
    ));

    let mut duplicate = bytes.to_vec();
    duplicate[104] &= !0x20;

    assert!(matches!(
        Reader::open(duplicate, Limits::default()),
        Err(Error::Invalid("duplicate record ID"))
    ));

    let mut builder = Builder::new(Limits::default());
    for (_, target) in [expected[0], expected[2], expected[1]] {
        builder.push(target, b"").unwrap();
    }

    assert_eq!(builder.into_bytes(b"").unwrap(), bytes.as_slice());
}

#[test]
fn interleaved_families_keep_every_id_across_full_and_partial_blocks() {
    let targets = (0..259u32)
        .flat_map(|value| {
            [
                Target::Network {
                    address: Ipv4Addr::from(value * 256).into(),
                    prefix: 24,
                },
                Target::Network {
                    address: Ipv6Addr::from(u128::from(value) << 64).into(),
                    prefix: 64,
                },
            ]
        })
        .collect::<Vec<_>>();
    let mut builder = Builder::new(Limits::default());
    for &target in &targets {
        builder.push(target, b"shared").unwrap();
    }
    let bytes = builder.into_bytes(b"").unwrap();
    let reader = Reader::open(bytes.as_slice(), Limits::default()).unwrap();
    let mut actual = Vec::new();
    reader
        .visit_all(|row| {
            actual.push((row.id as usize, row.target));
            assert_eq!(row.payload, b"shared");
            Ok::<_, Error>(())
        })
        .unwrap();
    actual.sort_unstable_by_key(|row| row.0);

    assert_eq!(
        actual,
        targets.iter().copied().enumerate().collect::<Vec<_>>()
    );

    #[cfg(feature = "external-sort")]
    {
        use std::io::Cursor;

        use netindex::{ExternalBuilder, ExternalOptions};

        let directory = tempfile::tempdir().unwrap();
        let mut external = ExternalBuilder::new(
            directory.path(),
            Limits::default(),
            ExternalOptions {
                run_records: 31,
                ..Default::default()
            },
        )
        .unwrap();
        for target in targets {
            external.push(target, b"shared").unwrap();
        }
        let mut output = Cursor::new(Vec::new());
        external.write_to(&mut output, b"").unwrap();

        assert_eq!(output.into_inner(), bytes);
    }
}