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
|
/*-
* Copyright (c) 2014-present MongoDB, Inc.
* Copyright (c) 2008-2014 WiredTiger, Inc.
* All rights reserved.
*
* See the file LICENSE for redistribution information.
*/
#include "wt_internal.h"
/*
* __tiered_open --
* Open a tiered data handle (internal version).
*/
static int
__tiered_open(WT_SESSION_IMPL *session, const char *cfg[])
{
WT_CONFIG cparser;
WT_CONFIG_ITEM ckey, cval, tierconf;
WT_DATA_HANDLE *dhandle;
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_TIERED *tiered;
u_int i;
const char **tiered_cfg;
dhandle = session->dhandle;
tiered = (WT_TIERED *)dhandle;
tiered_cfg = dhandle->cfg;
WT_UNUSED(cfg);
WT_RET(__wt_config_gets(session, tiered_cfg, "key_format", &cval));
WT_RET(__wt_strndup(session, cval.str, cval.len, &tiered->key_format));
WT_RET(__wt_config_gets(session, tiered_cfg, "value_format", &cval));
WT_RET(__wt_strndup(session, cval.str, cval.len, &tiered->value_format));
/* Point to some items in the copy to save re-parsing. */
WT_RET(__wt_config_gets(session, tiered_cfg, "tiered.tiers", &tierconf));
/* Count the number of tiers. */
__wt_config_subinit(session, &cparser, &tierconf);
while ((ret = __wt_config_next(&cparser, &ckey, &cval)) == 0)
++tiered->ntiers;
WT_RET_NOTFOUND_OK(ret);
WT_ASSERT(session, tiered->ntiers > 0);
WT_RET(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_calloc_def(session, tiered->ntiers, &tiered->tiers));
__wt_config_subinit(session, &cparser, &tierconf);
for (i = 0; i < tiered->ntiers; i++) {
WT_ERR(__wt_config_next(&cparser, &ckey, &cval));
WT_ERR(__wt_buf_fmt(session, buf, "%.*s", (int)ckey.len, ckey.str));
WT_ERR(__wt_session_get_dhandle(session, (const char *)buf->data, NULL, cfg, 0));
(void)__wt_atomic_addi32(&session->dhandle->session_inuse, 1);
/* Load in reverse order (based on LSM logic). */
tiered->tiers[(tiered->ntiers - 1) - i] = session->dhandle;
WT_ERR(__wt_session_release_dhandle(session));
}
if (0) {
err:
__wt_free(session, tiered->tiers);
}
__wt_scr_free(session, &buf);
return (ret);
}
/*
* __wt_tiered_open --
* Open a tiered data handle.
*/
int
__wt_tiered_open(WT_SESSION_IMPL *session, const char *cfg[])
{
WT_DECL_RET;
WT_WITH_TXN_ISOLATION(session, WT_ISO_READ_UNCOMMITTED, ret = __tiered_open(session, cfg));
return (ret);
}
/*
* __wt_tiered_close --
* Close a tiered data handle.
*/
int
__wt_tiered_close(WT_SESSION_IMPL *session, WT_TIERED *tiered)
{
WT_DECL_RET;
u_int i;
ret = 0;
__wt_free(session, tiered->key_format);
__wt_free(session, tiered->value_format);
if (tiered->tiers != NULL) {
for (i = 0; i < tiered->ntiers; i++)
(void)__wt_atomic_subi32(&tiered->tiers[i]->session_inuse, 1);
__wt_free(session, tiered->tiers);
}
return (ret);
}
|
