rust-rocksdb 0.47.0

Rust wrapper for Facebook's RocksDB embeddable database
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
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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300

use rust_rocksdb::{ColumnFamilyDescriptor, DB, Options, ReadOptions, WriteOptions};

mod util;
use util::DBPath;

#[test]
fn test_single_delete() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete");
    {
        let db = DB::open_default(&path).unwrap();

        // Test basic single_delete
        db.put(b"k1", b"v1").unwrap();
        assert_eq!(db.get(b"k1").unwrap().unwrap(), b"v1");

        db.single_delete(b"k1").unwrap();
        assert!(db.get(b"k1").unwrap().is_none());

        // Test that single_delete doesn't affect non-existent keys
        db.single_delete(b"k2").unwrap();
        assert!(db.get(b"k2").unwrap().is_none());
    }
}

#[test]
fn test_single_delete_opt() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete_opt");
    {
        let db = DB::open_default(&path).unwrap();
        let write_opts = WriteOptions::default();

        // Test single_delete with write options
        db.put(b"k1", b"v1").unwrap();
        assert_eq!(db.get(b"k1").unwrap().unwrap(), b"v1");

        db.single_delete_opt(b"k1", &write_opts).unwrap();
        assert!(db.get(b"k1").unwrap().is_none());

        // Test multiple keys
        db.put(b"k2", b"v2").unwrap();
        db.put(b"k3", b"v3").unwrap();

        db.single_delete_opt(b"k2", &write_opts).unwrap();
        assert!(db.get(b"k2").unwrap().is_none());
        assert_eq!(db.get(b"k3").unwrap().unwrap(), b"v3");
    }
}

#[test]
fn test_single_delete_cf() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete_cf");
    {
        let mut opts = Options::default();
        opts.create_if_missing(true);
        opts.create_missing_column_families(true);

        let cf1_descriptor = ColumnFamilyDescriptor::new("cf1", Options::default());
        let cf2_descriptor = ColumnFamilyDescriptor::new("cf2", Options::default());

        let db =
            DB::open_cf_descriptors(&opts, &path, vec![cf1_descriptor, cf2_descriptor]).unwrap();

        let cf1 = db.cf_handle("cf1").unwrap();
        let cf2 = db.cf_handle("cf2").unwrap();

        // Put and single_delete in cf1
        db.put_cf(&cf1, b"k1", b"v1").unwrap();
        assert_eq!(db.get_cf(&cf1, b"k1").unwrap().unwrap(), b"v1");

        db.single_delete_cf(&cf1, b"k1").unwrap();
        assert!(db.get_cf(&cf1, b"k1").unwrap().is_none());

        // Put and single_delete in cf2
        db.put_cf(&cf2, b"k2", b"v2").unwrap();
        assert_eq!(db.get_cf(&cf2, b"k2").unwrap().unwrap(), b"v2");

        db.single_delete_cf(&cf2, b"k2").unwrap();
        assert!(db.get_cf(&cf2, b"k2").unwrap().is_none());

        // Verify that single_delete in one cf doesn't affect another
        db.put_cf(&cf1, b"k3", b"v3").unwrap();
        db.put_cf(&cf2, b"k3", b"v3_cf2").unwrap();

        db.single_delete_cf(&cf1, b"k3").unwrap();
        assert!(db.get_cf(&cf1, b"k3").unwrap().is_none());
        assert_eq!(db.get_cf(&cf2, b"k3").unwrap().unwrap(), b"v3_cf2");
    }
}

#[test]
fn test_single_delete_cf_opt() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete_cf_opt");
    {
        let mut opts = Options::default();
        opts.create_if_missing(true);
        opts.create_missing_column_families(true);

        let cf_descriptor = ColumnFamilyDescriptor::new("cf1", Options::default());
        let db = DB::open_cf_descriptors(&opts, &path, vec![cf_descriptor]).unwrap();

        let cf = db.cf_handle("cf1").unwrap();
        let write_opts = WriteOptions::default();

        // Test single_delete_cf_opt
        db.put_cf(&cf, b"k1", b"v1").unwrap();
        assert_eq!(db.get_cf(&cf, b"k1").unwrap().unwrap(), b"v1");

        db.single_delete_cf_opt(&cf, b"k1", &write_opts).unwrap();
        assert!(db.get_cf(&cf, b"k1").unwrap().is_none());
    }
}

#[test]
fn test_single_delete_with_ts() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete_with_ts");
    {
        let mut opts = Options::default();
        opts.create_if_missing(true);

        // Set up user-defined timestamp
        let comparator_name = "test_comparator";

        opts.set_comparator_with_ts(
            comparator_name,
            8, // timestamp size
            Box::new(util::U64Comparator::compare),
            Box::new(util::U64Comparator::compare_ts),
            Box::new(util::U64Comparator::compare_without_ts),
        );

        let db = DB::open(&opts, &path).unwrap();

        let key = b"k1";
        let val1 = b"v1";
        let val2 = b"v2";
        let ts1 = 1_u64.to_le_bytes();
        let ts2 = 2_u64.to_le_bytes();
        let ts3 = 3_u64.to_le_bytes();

        // Put with timestamps
        db.put_with_ts(key, ts1, val1).unwrap();
        db.put_with_ts(key, ts2, val2).unwrap();

        // Read at different timestamps
        let mut opts = ReadOptions::default();
        opts.set_timestamp(ts2);
        let value = db.get_opt(key, &opts).unwrap();
        assert_eq!(value.unwrap().as_slice(), val2);

        // Single_delete with timestamp
        db.single_delete_with_ts(key, ts3).unwrap();
        opts.set_timestamp(ts3);
        let value = db.get_opt(key, &opts).unwrap();
        assert!(value.is_none());

        // ts2 should still read data before deletion
        opts.set_timestamp(ts2);
        let value = db.get_opt(key, &opts).unwrap();
        assert_eq!(value.unwrap().as_slice(), val2);
    }
}

#[test]
fn test_single_delete_with_ts_opt() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete_with_ts_opt");
    {
        let mut opts = Options::default();
        opts.create_if_missing(true);

        // Set up user-defined timestamp
        let comparator_name = "test_comparator";

        opts.set_comparator_with_ts(
            comparator_name,
            8, // timestamp size
            Box::new(util::U64Comparator::compare),
            Box::new(util::U64Comparator::compare_ts),
            Box::new(util::U64Comparator::compare_without_ts),
        );

        let db = DB::open(&opts, &path).unwrap();
        let write_opts = WriteOptions::default();

        let key = b"k1";
        let val = b"v1";
        let ts1 = 1_u64.to_le_bytes();
        let ts2 = 2_u64.to_le_bytes();

        // Put with timestamp
        db.put_with_ts(key, ts1, val).unwrap();

        // Single_delete with timestamp and write options
        db.single_delete_with_ts_opt(key, ts2, &write_opts).unwrap();

        let mut read_opts = ReadOptions::default();
        read_opts.set_timestamp(ts2);
        let value = db.get_opt(key, &read_opts).unwrap();
        assert!(value.is_none());
    }
}

#[test]
fn test_single_delete_cf_with_ts() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete_cf_with_ts");
    {
        let mut opts = Options::default();
        opts.create_if_missing(true);
        opts.create_missing_column_families(true);

        // Set up user-defined timestamp
        let comparator_name = "test_comparator";

        let mut cf_opts = Options::default();
        cf_opts.set_comparator_with_ts(
            comparator_name,
            8, // timestamp size
            Box::new(util::U64Comparator::compare),
            Box::new(util::U64Comparator::compare_ts),
            Box::new(util::U64Comparator::compare_without_ts),
        );

        let cf_descriptor = ColumnFamilyDescriptor::new("cf1", cf_opts);
        let db = DB::open_cf_descriptors(&opts, &path, vec![cf_descriptor]).unwrap();

        let cf = db.cf_handle("cf1").unwrap();

        let key = b"k1";
        let val1 = b"v1";
        let val2 = b"v2";
        let ts1 = 1_u64.to_le_bytes();
        let ts2 = 2_u64.to_le_bytes();
        let ts3 = 3_u64.to_le_bytes();

        // Put with timestamps in column family
        db.put_cf_with_ts(&cf, key, ts1, val1).unwrap();
        db.put_cf_with_ts(&cf, key, ts2, val2).unwrap();

        // Read at different timestamps
        let mut opts = ReadOptions::default();
        opts.set_timestamp(ts2);
        let value = db.get_cf_opt(&cf, key, &opts).unwrap();
        assert_eq!(value.unwrap().as_slice(), val2);

        // Single_delete with timestamp in column family
        db.single_delete_cf_with_ts(&cf, key, ts3).unwrap();
        opts.set_timestamp(ts3);
        let value = db.get_cf_opt(&cf, key, &opts).unwrap();
        assert!(value.is_none());

        // ts2 should still read data before deletion
        opts.set_timestamp(ts2);
        let value = db.get_cf_opt(&cf, key, &opts).unwrap();
        assert_eq!(value.unwrap().as_slice(), val2);
    }
}

#[test]
fn test_single_delete_cf_with_ts_opt() {
    let path = DBPath::new("_rust_rocksdb_test_single_delete_cf_with_ts_opt");
    {
        let mut opts = Options::default();
        opts.create_if_missing(true);
        opts.create_missing_column_families(true);

        // Set up user-defined timestamp
        let comparator_name = "test_comparator";

        let mut cf_opts = Options::default();
        cf_opts.set_comparator_with_ts(
            comparator_name,
            8, // timestamp size
            Box::new(util::U64Comparator::compare),
            Box::new(util::U64Comparator::compare_ts),
            Box::new(util::U64Comparator::compare_without_ts),
        );

        let cf_descriptor = ColumnFamilyDescriptor::new("cf1", cf_opts);
        let db = DB::open_cf_descriptors(&opts, &path, vec![cf_descriptor]).unwrap();

        let cf = db.cf_handle("cf1").unwrap();
        let write_opts = WriteOptions::default();

        let key = b"k1";
        let val = b"v1";
        let ts1 = 1_u64.to_le_bytes();
        let ts2 = 2_u64.to_le_bytes();

        // Put with timestamp in column family
        db.put_cf_with_ts(&cf, key, ts1, val).unwrap();

        // Single_delete with timestamp and write options in column family
        db.single_delete_cf_with_ts_opt(&cf, key, ts2, &write_opts)
            .unwrap();

        let mut read_opts = ReadOptions::default();
        read_opts.set_timestamp(ts2);
        let value = db.get_cf_opt(&cf, key, &read_opts).unwrap();
        assert!(value.is_none());
    }
}