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
|
use crate::connect;
use futures_util::{pin_mut, TryStreamExt};
use tokio_postgres::binary_copy::{BinaryCopyInWriter, BinaryCopyOutStream};
use tokio_postgres::types::Type;
#[tokio::test]
async fn write_basic() {
let client = connect("user=postgres").await;
client
.batch_execute("CREATE TEMPORARY TABLE foo (id INT, bar TEXT)")
.await
.unwrap();
let sink = client
.copy_in("COPY foo (id, bar) FROM STDIN BINARY")
.await
.unwrap();
let writer = BinaryCopyInWriter::new(sink, &[Type::INT4, Type::TEXT]);
pin_mut!(writer);
writer.as_mut().write(&[&1i32, &"foobar"]).await.unwrap();
writer
.as_mut()
.write(&[&2i32, &None::<&str>])
.await
.unwrap();
writer.finish().await.unwrap();
let rows = client
.query("SELECT id, bar FROM foo ORDER BY id", &[])
.await
.unwrap();
assert_eq!(rows.len(), 2);
assert_eq!(rows[0].get::<_, i32>(0), 1);
assert_eq!(rows[0].get::<_, Option<&str>>(1), Some("foobar"));
assert_eq!(rows[1].get::<_, i32>(0), 2);
assert_eq!(rows[1].get::<_, Option<&str>>(1), None);
}
#[tokio::test]
async fn write_many_rows() {
let client = connect("user=postgres").await;
client
.batch_execute("CREATE TEMPORARY TABLE foo (id INT, bar TEXT)")
.await
.unwrap();
let sink = client
.copy_in("COPY foo (id, bar) FROM STDIN BINARY")
.await
.unwrap();
let writer = BinaryCopyInWriter::new(sink, &[Type::INT4, Type::TEXT]);
pin_mut!(writer);
for i in 0..10_000i32 {
writer
.as_mut()
.write(&[&i, &format!("the value for {}", i)])
.await
.unwrap();
}
writer.finish().await.unwrap();
let rows = client
.query("SELECT id, bar FROM foo ORDER BY id", &[])
.await
.unwrap();
for (i, row) in rows.iter().enumerate() {
assert_eq!(row.get::<_, i32>(0), i as i32);
assert_eq!(row.get::<_, &str>(1), format!("the value for {}", i));
}
}
#[tokio::test]
async fn write_big_rows() {
let client = connect("user=postgres").await;
client
.batch_execute("CREATE TEMPORARY TABLE foo (id INT, bar BYTEA)")
.await
.unwrap();
let sink = client
.copy_in("COPY foo (id, bar) FROM STDIN BINARY")
.await
.unwrap();
let writer = BinaryCopyInWriter::new(sink, &[Type::INT4, Type::BYTEA]);
pin_mut!(writer);
for i in 0..2i32 {
writer
.as_mut()
.write(&[&i, &vec![i as u8; 128 * 1024]])
.await
.unwrap();
}
writer.finish().await.unwrap();
let rows = client
.query("SELECT id, bar FROM foo ORDER BY id", &[])
.await
.unwrap();
for (i, row) in rows.iter().enumerate() {
assert_eq!(row.get::<_, i32>(0), i as i32);
assert_eq!(row.get::<_, &[u8]>(1), &*vec![i as u8; 128 * 1024]);
}
}
#[tokio::test]
async fn read_basic() {
let client = connect("user=postgres").await;
client
.batch_execute(
"
CREATE TEMPORARY TABLE foo (id INT, bar TEXT);
INSERT INTO foo (id, bar) VALUES (1, 'foobar'), (2, NULL);
",
)
.await
.unwrap();
let stream = client
.copy_out("COPY foo (id, bar) TO STDIN BINARY")
.await
.unwrap();
let rows = BinaryCopyOutStream::new(stream, &[Type::INT4, Type::TEXT])
.try_collect::<Vec<_>>()
.await
.unwrap();
assert_eq!(rows.len(), 2);
assert_eq!(rows[0].get::<i32>(0), 1);
assert_eq!(rows[0].get::<Option<&str>>(1), Some("foobar"));
assert_eq!(rows[1].get::<i32>(0), 2);
assert_eq!(rows[1].get::<Option<&str>>(1), None);
}
#[tokio::test]
async fn read_many_rows() {
let client = connect("user=postgres").await;
client
.batch_execute(
"
CREATE TEMPORARY TABLE foo (id INT, bar TEXT);
INSERT INTO foo (id, bar) SELECT i, 'the value for ' || i FROM generate_series(0, 9999) i;"
)
.await
.unwrap();
let stream = client
.copy_out("COPY foo (id, bar) TO STDIN BINARY")
.await
.unwrap();
let rows = BinaryCopyOutStream::new(stream, &[Type::INT4, Type::TEXT])
.try_collect::<Vec<_>>()
.await
.unwrap();
assert_eq!(rows.len(), 10_000);
for (i, row) in rows.iter().enumerate() {
assert_eq!(row.get::<i32>(0), i as i32);
assert_eq!(row.get::<&str>(1), format!("the value for {}", i));
}
}
#[tokio::test]
async fn read_big_rows() {
let client = connect("user=postgres").await;
client
.batch_execute("CREATE TEMPORARY TABLE foo (id INT, bar BYTEA)")
.await
.unwrap();
for i in 0..2i32 {
client
.execute(
"INSERT INTO foo (id, bar) VALUES ($1, $2)",
&[&i, &vec![i as u8; 128 * 1024]],
)
.await
.unwrap();
}
let stream = client
.copy_out("COPY foo (id, bar) TO STDIN BINARY")
.await
.unwrap();
let rows = BinaryCopyOutStream::new(stream, &[Type::INT4, Type::BYTEA])
.try_collect::<Vec<_>>()
.await
.unwrap();
assert_eq!(rows.len(), 2);
for (i, row) in rows.iter().enumerate() {
assert_eq!(row.get::<i32>(0), i as i32);
assert_eq!(row.get::<&[u8]>(1), &vec![i as u8; 128 * 1024][..]);
}
}
|
