/*
* __config_getraw --
* Given a config parser, find the final value for a given key.
*/
static int
__config_getraw(
WT_CONFIG *cparser, WT_CONFIG_ITEM *key, WT_CONFIG_ITEM *value, bool top)
{
WT_CONFIG sparser;
WT_CONFIG_ITEM k, v, subk;
WT_DECL_RET;
bool found;
found = false;
while ((ret = __config_next(cparser, &k, &v)) == 0) {
if (k.type != WT_CONFIG_ITEM_STRING &&
k.type != WT_CONFIG_ITEM_ID)
continue;
if (k.len == key->len && strncmp(key->str, k.str, k.len) == 0) {
*value = v;
found = true;
} else if (k.len < key->len && key->str[k.len] == '.' &&
strncmp(key->str, k.str, k.len) == 0) {
subk.str = key->str + k.len + 1;
subk.len = (key->len - k.len) - 1;
WT_RET(__wt_config_initn(
cparser->session, &sparser, v.str, v.len));
if ((ret = __config_getraw(
&sparser, &subk, value, false)) == 0)
found = true;
WT_RET_NOTFOUND_OK(ret);
}
}
WT_RET_NOTFOUND_OK(ret);
if (!found)
return (WT_NOTFOUND);
return (top ? __config_process_value(cparser, value) : 0);
}
/*
* __recovery_file_scan --
* Scan the files referenced from the metadata and gather information
* about them for recovery.
*/
static int
__recovery_file_scan(WT_RECOVERY *r)
{
WT_CURSOR *c;
WT_DECL_RET;
int cmp;
const char *uri, *config;
/* Scan through all files in the metadata. */
c = r->files[0].c;
c->set_key(c, "file:");
if ((ret = c->search_near(c, &cmp)) != 0) {
/* Is the metadata empty? */
WT_RET_NOTFOUND_OK(ret);
return (0);
}
if (cmp < 0)
WT_RET_NOTFOUND_OK(c->next(c));
for (; ret == 0; ret = c->next(c)) {
WT_RET(c->get_key(c, &uri));
if (!WT_PREFIX_MATCH(uri, "file:"))
break;
WT_RET(c->get_value(c, &config));
WT_RET(__recovery_setup_file(r, uri, config));
}
WT_RET_NOTFOUND_OK(ret);
return (0);
}
/*
* __wt_struct_check --
* Check that the specified packing format is valid, and whether it fits
* into a fixed-sized bitfield.
*/
int
__wt_struct_check(WT_SESSION_IMPL *session,
const char *fmt, size_t len, bool *fixedp, uint32_t *fixed_lenp)
{
WT_DECL_PACK_VALUE(pv);
WT_DECL_RET;
WT_PACK pack;
int fields;
WT_RET(__pack_initn(session, &pack, fmt, len));
for (fields = 0; (ret = __pack_next(&pack, &pv)) == 0; fields++)
;
WT_RET_NOTFOUND_OK(ret);
if (fixedp != NULL && fixed_lenp != NULL) {
if (fields == 0) {
*fixedp = 1;
*fixed_lenp = 0;
} else if (fields == 1 && pv.type == 't') {
*fixedp = 1;
*fixed_lenp = pv.size;
} else
*fixedp = 0;
}
return (0);
}
/*
* __wt_config_gets_defno --
* Given a NULL-terminated list of configuration strings, and if the
* application supplied any configuration strings, find the final value for
* a given string key
*/
int
__wt_config_gets_defno(WT_SESSION_IMPL *session,
const char **cfg, const char *key, WT_CONFIG_ITEM *value)
{
static const WT_CONFIG_ITEM false_value = {
"", 0, 0, ITEM_NUM
};
/*
* This is a performance hack: it's expensive to repeatedly parse
* configuration strings, so don't do it unless it's necessary in
* performance paths like cursor creation. Assume the second
* configuration string is the application's configuration string, and
* if it's not set (which is true most of the time), then assume the
* default answer is "false", and return that. This makes it much
* faster to open cursors when checking for obscure open configuration
* strings like "next_random".
*/
*value = false_value;
if (cfg == NULL || cfg[1] == NULL)
return (0);
else if (cfg[2] == NULL)
WT_RET_NOTFOUND_OK(
__wt_config_getones(session, cfg[1], key, value));
return (__wt_config_gets(session, cfg, key, value));
}
/*
* __wt_config_get --
* Given a NULL-terminated list of configuration strings, find
* the final value for a given key.
*/
int
__wt_config_get(WT_SESSION_IMPL *session,
const char **cfg_arg, WT_CONFIG_ITEM *key, WT_CONFIG_ITEM *value)
{
WT_CONFIG cparser;
WT_DECL_RET;
const char **cfg;
if (cfg_arg[0] == NULL)
return (WT_NOTFOUND);
/*
* Search the strings in reverse order, that way the first hit wins
* and we don't search the base set until there's no other choice.
*/
for (cfg = cfg_arg; *cfg != NULL; ++cfg)
;
do {
--cfg;
__wt_config_init(session, &cparser, *cfg);
if ((ret = __config_getraw(&cparser, key, value, true)) == 0)
return (0);
WT_RET_NOTFOUND_OK(ret);
} while (cfg != cfg_arg);
return (WT_NOTFOUND);
}
/*
* __wt_schema_index_source --
* Get the URI of the data source for an index.
*/
int
__wt_schema_index_source(WT_SESSION_IMPL *session,
WT_TABLE *table, const char *idxname, const char *config, WT_ITEM *buf)
{
WT_CONFIG_ITEM cval;
WT_DECL_RET;
size_t len;
const char *prefix, *suffix, *tablename;
tablename = table->name + strlen("table:");
if ((ret = __wt_config_getones(session, config, "type", &cval)) == 0 &&
!WT_STRING_MATCH("file", cval.str, cval.len)) {
prefix = cval.str;
len = cval.len;
suffix = "_idx";
} else {
prefix = "file";
len = strlen(prefix);
suffix = ".wti";
}
WT_RET_NOTFOUND_OK(ret);
WT_RET(__wt_buf_fmt(session, buf, "%.*s:%s_%s%s",
(int)len, prefix, tablename, idxname, suffix));
return (0);
}
/*
* __cursor_truncate_fix --
* Discard a cursor range from fixed-width column-store tree.
*/
static int
__cursor_truncate_fix(WT_SESSION_IMPL *session,
WT_CURSOR_BTREE *start, WT_CURSOR_BTREE *stop,
int (*rmfunc)(WT_SESSION_IMPL *, WT_CURSOR_BTREE *, int))
{
WT_DECL_RET;
uint8_t *value;
/*
* Handle fixed-length column-store objects separately: for row-store
* and variable-length column-store objects we have "deleted" values
* and so returned objects actually exist: fixed-length column-store
* objects are filled-in if they don't exist, that is, if you create
* record 37, records 1-36 magically appear. Those records can't be
* deleted, which means we have to ignore already "deleted" records.
*
* First, call the standard cursor remove method to do a full search and
* re-position the cursor because we don't have a saved copy of the
* page's write generation information, which we need to remove records.
* Once that's done, we can delete records without a full search, unless
* we encounter a restart error because the page was modified by some
* other thread of control; in that case, repeat the full search to
* refresh the page's modification information.
*/
if (start == NULL) {
do {
WT_RET(__wt_btcur_remove(stop));
for (;;) {
if ((ret = __wt_btcur_prev(stop, 1)) != 0)
break;
stop->compare = 0; /* Exact match */
value = (uint8_t *)stop->iface.value.data;
if (*value != 0 &&
(ret = rmfunc(session, stop, 1)) != 0)
break;
}
} while (ret == WT_RESTART);
} else {
do {
WT_RET(__wt_btcur_remove(start));
for (;;) {
if (stop != NULL &&
__cursor_equals(start, stop))
break;
if ((ret = __wt_btcur_next(start, 1)) != 0)
break;
start->compare = 0; /* Exact match */
value = (uint8_t *)start->iface.value.data;
if (*value != 0 &&
(ret = rmfunc(session, start, 1)) != 0)
break;
}
} while (ret == WT_RESTART);
}
WT_RET_NOTFOUND_OK(ret);
return (0);
}
/*
* __cursor_truncate --
* Discard a cursor range from row-store or variable-width column-store
* tree.
*/
static int
__cursor_truncate(WT_SESSION_IMPL *session,
WT_CURSOR_BTREE *start, WT_CURSOR_BTREE *stop,
int (*rmfunc)(WT_SESSION_IMPL *, WT_CURSOR_BTREE *, int))
{
WT_DECL_RET;
/*
* First, call the standard cursor remove method to do a full search and
* re-position the cursor because we don't have a saved copy of the
* page's write generation information, which we need to remove records.
* Once that's done, we can delete records without a full search, unless
* we encounter a restart error because the page was modified by some
* other thread of control; in that case, repeat the full search to
* refresh the page's modification information.
*
* If this is a row-store, we delete leaf pages having no overflow items
* without reading them; for that to work, we have to ensure we read the
* page referenced by the ending cursor, since we may be deleting only a
* partial page at the end of the truncation. Our caller already fully
* instantiated the end cursor, so we know that page is pinned in memory
* and we can proceed without concern.
*/
if (start == NULL) {
do {
WT_RET(__wt_btcur_remove(stop));
for (;;) {
if ((ret = __wt_btcur_prev(stop, 1)) != 0)
break;
stop->compare = 0; /* Exact match */
if ((ret = rmfunc(session, stop, 1)) != 0)
break;
}
} while (ret == WT_RESTART);
} else {
do {
WT_RET(__wt_btcur_remove(start));
/*
* Reset ret each time through so that we don't loop
* forever in the cursor equals case.
*/
for (ret = 0;;) {
if (stop != NULL &&
__cursor_equals(start, stop))
break;
if ((ret = __wt_btcur_next(start, 1)) != 0)
break;
start->compare = 0; /* Exact match */
if ((ret = rmfunc(session, start, 1)) != 0)
break;
}
} while (ret == WT_RESTART);
}
WT_RET_NOTFOUND_OK(ret);
return (0);
}
/*
* __wt_meta_checkpoint_clear --
* Clear a file's checkpoint.
*/
int
__wt_meta_checkpoint_clear(WT_SESSION_IMPL *session, const char *fname)
{
/*
* If we are unrolling a failed create, we may have already removed the
* metadata entry. If no entry is found to update and we're trying to
* clear the checkpoint, just ignore it.
*/
WT_RET_NOTFOUND_OK(__ckpt_set(session, fname, NULL));
return (0);
}
/*
* __wt_range_truncate --
* Truncate of a cursor range, default implementation.
*/
int
__wt_range_truncate(WT_CURSOR *start, WT_CURSOR *stop)
{
WT_DECL_RET;
int cmp;
if (start == NULL) {
do {
WT_RET(stop->remove(stop));
} while ((ret = stop->prev(stop)) == 0);
WT_RET_NOTFOUND_OK(ret);
} else {
cmp = -1;
do {
if (stop != NULL)
WT_RET(start->compare(start, stop, &cmp));
WT_RET(start->remove(start));
} while (cmp < 0 && (ret = start->next(start)) == 0);
WT_RET_NOTFOUND_OK(ret);
}
return (0);
}
/*
* __json_struct_unpackv --
* Unpack a byte string to JSON (va_list version).
*/
static inline int
__json_struct_unpackv(WT_SESSION_IMPL *session,
const void *buffer, size_t size, const char *fmt, WT_CONFIG_ITEM *names,
u_char *jbuf, size_t jbufsize, bool iskey, va_list ap)
{
WT_CONFIG_ITEM name;
WT_DECL_PACK_VALUE(pv);
WT_DECL_RET;
WT_PACK pack;
WT_PACK_NAME packname;
size_t jsize;
const uint8_t *p, *end;
bool needcr;
p = buffer;
end = p + size;
needcr = false;
/* Unpacking a cursor marked as json implies a single arg. */
*va_arg(ap, const char **) = (char *)jbuf;
__pack_name_init(session, names, iskey, &packname);
WT_RET(__pack_init(session, &pack, fmt));
while ((ret = __pack_next(&pack, &pv)) == 0) {
if (needcr) {
WT_ASSERT(session, jbufsize >= 3);
strncat((char *)jbuf, ",\n", jbufsize);
jbuf += 2;
jbufsize -= 2;
}
needcr = true;
WT_RET(__unpack_read(session, &pv, &p, (size_t)(end - p)));
WT_RET(__pack_name_next(&packname, &name));
jsize = 0;
WT_RET(__json_unpack_put(session,
(u_char *)&pv, jbuf, jbufsize, &name, &jsize));
WT_ASSERT(session, jsize <= jbufsize);
jbuf += jsize;
jbufsize -= jsize;
}
WT_RET_NOTFOUND_OK(ret);
/* Be paranoid - __unpack_read should never overflow. */
WT_ASSERT(session, p <= end);
WT_ASSERT(session, jbufsize == 1);
return (0);
}
/*
* __wt_config_gets_def --
* Performance hack: skip parsing config strings by hard-coding defaults.
*
* It's expensive to repeatedly parse configuration strings, so don't do
* it unless it's necessary in performance paths like cursor creation.
* Assume the second configuration string is the application's
* configuration string, and if it's not set (which is true most of the
* time), then use the supplied default value. This makes it faster to
* open cursors when checking for obscure open configuration strings like
* "next_random".
*/
int
__wt_config_gets_def(WT_SESSION_IMPL *session,
const char **cfg, const char *key, int def, WT_CONFIG_ITEM *value)
{
static const WT_CONFIG_ITEM false_value = {
"", 0, 0, WT_CONFIG_ITEM_NUM
};
*value = false_value;
value->val = def;
if (cfg == NULL || cfg[0] == NULL || cfg[1] == NULL)
return (0);
else if (cfg[2] == NULL)
WT_RET_NOTFOUND_OK(
__wt_config_getones(session, cfg[1], key, value));
return (__wt_config_gets(session, cfg, key, value));
}
/*
* __wt_struct_repack --
* Return the subset of the packed buffer that represents part of
* the format. If the result is not contiguous in the existing
* buffer, a buffer is reallocated and filled.
*/
int
__wt_struct_repack(WT_SESSION_IMPL *session, const char *infmt,
const char *outfmt, const WT_ITEM *inbuf, WT_ITEM *outbuf)
{
WT_DECL_PACK_VALUE(pvin);
WT_DECL_PACK_VALUE(pvout);
WT_DECL_RET;
WT_PACK packin, packout;
const uint8_t *before, *end, *p;
const void *start;
start = NULL;
p = inbuf->data;
end = p + inbuf->size;
WT_RET(__pack_init(session, &packout, outfmt));
WT_RET(__pack_init(session, &packin, infmt));
/* Outfmt should complete before infmt */
while ((ret = __pack_next(&packout, &pvout)) == 0) {
if (p >= end)
WT_RET(EINVAL);
if (pvout.type == 'x' && pvout.size == 0 && pvout.havesize)
continue;
WT_RET(__pack_next(&packin, &pvin));
before = p;
WT_RET(__unpack_read(session, &pvin, &p, (size_t)(end - p)));
if (pvout.type != pvin.type)
WT_RET(ENOTSUP);
if (start == NULL)
start = before;
}
WT_RET_NOTFOUND_OK(ret);
/* Be paranoid - __pack_write should never overflow. */
WT_ASSERT(session, p <= end);
outbuf->data = start;
outbuf->size = WT_PTRDIFF(p, start);
return (0);
}
/*
* __conn_verbose_config --
* Set verbose configuration.
*/
static int
__conn_verbose_config(WT_SESSION_IMPL *session, const char *cfg[])
{
WT_CONFIG_ITEM cval, sval;
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
static struct {
const char *name;
uint32_t flag;
} *ft, verbtypes[] = {
{ "block", WT_VERB_block },
{ "shared_cache",WT_VERB_shared_cache },
{ "ckpt", WT_VERB_ckpt },
{ "evict", WT_VERB_evict },
{ "evictserver",WT_VERB_evictserver },
{ "fileops", WT_VERB_fileops },
{ "hazard", WT_VERB_hazard },
{ "lsm", WT_VERB_lsm },
{ "mutex", WT_VERB_mutex },
{ "read", WT_VERB_read },
{ "reconcile", WT_VERB_reconcile },
{ "salvage", WT_VERB_salvage },
{ "verify", WT_VERB_verify },
{ "write", WT_VERB_write },
{ NULL, 0 }
};
conn = S2C(session);
if ((ret = __wt_config_gets(session, cfg, "verbose", &cval)) != 0)
return (ret == WT_NOTFOUND ? 0 : ret);
for (ft = verbtypes; ft->name != NULL; ft++) {
if ((ret = __wt_config_subgets(
session, &cval, ft->name, &sval)) == 0 && sval.val != 0)
FLD_SET(conn->verbose, ft->flag);
else
FLD_CLR(conn->verbose, ft->flag);
WT_RET_NOTFOUND_OK(ret);
}
return (0);
}
/*
* __meta_btree_apply --
* Apply a function to all files listed in the metadata, apart from the
* metadata file.
*/
static inline int
__meta_btree_apply(WT_SESSION_IMPL *session, WT_CURSOR *cursor,
int (*func)(WT_SESSION_IMPL *, const char *[]), const char *cfg[])
{
WT_DECL_RET;
const char *uri;
int cmp;
cursor->set_key(cursor, "file:");
if ((ret = cursor->search_near(cursor, &cmp)) == 0 && cmp < 0)
ret = cursor->next(cursor);
for (; ret == 0; ret = cursor->next(cursor)) {
WT_RET(cursor->get_key(cursor, &uri));
if (!WT_PREFIX_MATCH(uri, "file:"))
break;
if (strcmp(uri, WT_METAFILE_URI) == 0)
continue;
/*
* We need to pull the handle into the session handle cache
* and make sure it's referenced to stop other internal code
* dropping the handle (e.g in LSM when cleaning up obsolete
* chunks). Holding the metadata lock isn't enough.
*/
ret = __wt_session_get_btree(session, uri, NULL, NULL, 0);
if (ret == 0) {
WT_SAVE_DHANDLE(session, ret = func(session, cfg));
if (WT_META_TRACKING(session))
WT_TRET(__wt_meta_track_handle_lock(
session, false));
else
WT_TRET(__wt_session_release_btree(session));
} else if (ret == EBUSY)
ret = __wt_conn_btree_apply_single(
session, uri, NULL, func, cfg);
WT_RET(ret);
}
WT_RET_NOTFOUND_OK(ret);
return (0);
}
/*
* __wt_txn_reconfigure --
* WT_SESSION::reconfigure for transactions.
*/
int
__wt_txn_reconfigure(WT_SESSION_IMPL *session, const char *config)
{
WT_CONFIG_ITEM cval;
WT_DECL_RET;
WT_TXN *txn;
txn = &session->txn;
ret = __wt_config_getones(session, config, "isolation", &cval);
if (ret == 0 && cval.len != 0) {
session->isolation = txn->isolation =
WT_STRING_MATCH("snapshot", cval.str, cval.len) ?
WT_ISO_SNAPSHOT :
WT_STRING_MATCH("read-uncommitted", cval.str, cval.len) ?
WT_ISO_READ_UNCOMMITTED : WT_ISO_READ_COMMITTED;
}
WT_RET_NOTFOUND_OK(ret);
return (0);
}
/*
* __wt_schema_colcheck --
* Check that a list of columns matches a (key,value) format pair.
*/
int
__wt_schema_colcheck(WT_SESSION_IMPL *session,
const char *key_format, const char *value_format, WT_CONFIG_ITEM *colconf,
u_int *kcolsp, u_int *vcolsp)
{
WT_CONFIG conf;
WT_CONFIG_ITEM k, v;
WT_DECL_PACK_VALUE(pv);
WT_DECL_RET;
WT_PACK pack;
u_int kcols, ncols, vcols;
WT_RET(__pack_init(session, &pack, key_format));
for (kcols = 0; (ret = __pack_next(&pack, &pv)) == 0; kcols++)
;
WT_RET_NOTFOUND_OK(ret);
WT_RET(__pack_init(session, &pack, value_format));
for (vcols = 0; (ret = __pack_next(&pack, &pv)) == 0; vcols++)
;
WT_RET_TEST(ret != WT_NOTFOUND, ret);
/* Walk through the named columns. */
__wt_config_subinit(session, &conf, colconf);
for (ncols = 0; (ret = __wt_config_next(&conf, &k, &v)) == 0; ncols++)
;
WT_RET_TEST(ret != WT_NOTFOUND, ret);
if (ncols != 0 && ncols != kcols + vcols)
WT_RET_MSG(session, EINVAL, "Number of columns in '%.*s' "
"does not match key format '%s' plus value format '%s'",
(int)colconf->len, colconf->str, key_format, value_format);
if (kcolsp != NULL)
*kcolsp = kcols;
if (vcolsp != NULL)
*vcolsp = vcols;
return (0);
}
/*
* __meta_btree_apply --
* Apply a function to all files listed in the metadata, apart from the
* metadata file.
*/
static inline int
__meta_btree_apply(WT_SESSION_IMPL *session, WT_CURSOR *cursor,
int (*file_func)(WT_SESSION_IMPL *, const char *[]),
int (*name_func)(WT_SESSION_IMPL *, const char *, bool *),
const char *cfg[])
{
WT_DECL_RET;
const char *uri;
bool skip;
while ((ret = cursor->next(cursor)) == 0) {
WT_RET(cursor->get_key(cursor, &uri));
if (strcmp(uri, WT_METAFILE_URI) == 0)
continue;
skip = false;
if (name_func != NULL)
WT_RET(name_func(session, uri, &skip));
if (file_func == NULL || skip || !WT_PREFIX_MATCH(uri, "file:"))
continue;
/*
* We need to pull the handle into the session handle cache
* and make sure it's referenced to stop other internal code
* dropping the handle (e.g in LSM when cleaning up obsolete
* chunks). Holding the metadata lock isn't enough.
*/
if ((ret = __wt_session_get_btree(
session, uri, NULL, NULL, 0)) != 0)
return (ret == EBUSY ? 0 : ret);
WT_SAVE_DHANDLE(session, ret = file_func(session, cfg));
WT_TRET(__wt_session_release_btree(session));
WT_RET(ret);
}
WT_RET_NOTFOUND_OK(ret);
return (0);
}
/*
* __json_struct_size --
* Calculate the size of a packed byte string as formatted for JSON.
*/
static inline int
__json_struct_size(WT_SESSION_IMPL *session, const void *buffer,
size_t size, const char *fmt, WT_CONFIG_ITEM *names, bool iskey,
size_t *presult)
{
WT_CONFIG_ITEM name;
WT_DECL_PACK_VALUE(pv);
WT_DECL_RET;
WT_PACK pack;
WT_PACK_NAME packname;
size_t result;
const uint8_t *p, *end;
bool needcr;
p = buffer;
end = p + size;
result = 0;
needcr = false;
__pack_name_init(session, names, iskey, &packname);
WT_RET(__pack_init(session, &pack, fmt));
while ((ret = __pack_next(&pack, &pv)) == 0) {
if (needcr)
result += 2;
needcr = true;
WT_RET(__unpack_read(session, &pv, &p, (size_t)(end - p)));
WT_RET(__pack_name_next(&packname, &name));
WT_RET(
__json_unpack_put(session, &pv, NULL, 0, &name, &result));
}
WT_RET_NOTFOUND_OK(ret);
/* Be paranoid - __pack_write should never overflow. */
WT_ASSERT(session, p <= end);
*presult = result;
return (0);
}
/*
* __wt_config_gets_def --
* Performance hack: skip parsing config strings by hard-coding defaults.
*
* It's expensive to repeatedly parse configuration strings, so don't do
* it unless it's necessary in performance paths like cursor creation.
* Assume the second configuration string is the application's
* configuration string, and if it's not set (which is true most of the
* time), then use the supplied default value. This makes it faster to
* open cursors when checking for obscure open configuration strings like
* "next_random".
*/
int
__wt_config_gets_def(WT_SESSION_IMPL *session,
const char **cfg, const char *key, int def, WT_CONFIG_ITEM *value)
{
WT_CONFIG_ITEM_STATIC_INIT(false_value);
const char **end;
*value = false_value;
value->val = def;
if (cfg == NULL)
return (0);
/*
* Checking the "length" of the pointer array is a little odd, but it's
* deliberate. The reason is because we pass variable length arrays of
* pointers as the configuration argument, some of which have only one
* element and the NULL termination. Static analyzers (like Coverity)
* complain if we read from an offset past the end of the array, even
* if we check there's no NULL slots before the offset.
*/
for (end = cfg; *end != NULL; ++end)
;
switch ((int)(end - cfg)) {
case 0: /* cfg[0] == NULL */
case 1: /* cfg[1] == NULL */
return (0);
case 2: /* cfg[2] == NULL */
WT_RET_NOTFOUND_OK(
__wt_config_getones(session, cfg[1], key, value));
return (0);
default:
return (__wt_config_gets(session, cfg, key, value));
}
/* NOTREACHED */
}
/*
* __wt_lsm_tree_create --
* Create an LSM tree structure for the given name.
*/
int
__wt_lsm_tree_create(WT_SESSION_IMPL *session,
const char *uri, int exclusive, const char *config)
{
WT_CONFIG_ITEM cval;
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_LSM_TREE *lsm_tree;
const char *cfg[] =
{ WT_CONFIG_BASE(session, session_create), config, NULL };
char *tmpconfig;
/* If the tree is open, it already exists. */
if ((ret = __wt_lsm_tree_get(session, uri, 0, &lsm_tree)) == 0) {
__wt_lsm_tree_release(session, lsm_tree);
return (exclusive ? EEXIST : 0);
}
WT_RET_NOTFOUND_OK(ret);
/*
* If the tree has metadata, it already exists.
*
* !!!
* Use a local variable: we don't care what the existing configuration
* is, but we don't want to overwrite the real config.
*/
if (__wt_metadata_search(session, uri, &tmpconfig) == 0) {
__wt_free(session, tmpconfig);
return (exclusive ? EEXIST : 0);
}
WT_RET_NOTFOUND_OK(ret);
WT_RET(__wt_config_gets(session, cfg, "key_format", &cval));
if (WT_STRING_MATCH("r", cval.str, cval.len))
WT_RET_MSG(session, EINVAL,
"LSM trees cannot be configured as column stores");
WT_RET(__wt_calloc_def(session, 1, &lsm_tree));
WT_ERR(__lsm_tree_set_name(session, lsm_tree, uri));
WT_ERR(__wt_config_gets(session, cfg, "key_format", &cval));
WT_ERR(__wt_strndup(
session, cval.str, cval.len, &lsm_tree->key_format));
WT_ERR(__wt_config_gets(session, cfg, "value_format", &cval));
WT_ERR(__wt_strndup(
session, cval.str, cval.len, &lsm_tree->value_format));
WT_ERR(__wt_config_gets(session, cfg, "collator", &cval));
WT_ERR(__wt_strndup(
session, cval.str, cval.len, &lsm_tree->collator_name));
WT_ERR(__wt_config_gets(session, cfg, "lsm.auto_throttle", &cval));
if (cval.val)
F_SET(lsm_tree, WT_LSM_TREE_THROTTLE);
else
F_CLR(lsm_tree, WT_LSM_TREE_THROTTLE);
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom", &cval));
FLD_SET(lsm_tree->bloom,
(cval.val == 0 ? WT_LSM_BLOOM_OFF : WT_LSM_BLOOM_MERGED));
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_oldest", &cval));
if (cval.val != 0)
FLD_SET(lsm_tree->bloom, WT_LSM_BLOOM_OLDEST);
if (FLD_ISSET(lsm_tree->bloom, WT_LSM_BLOOM_OFF) &&
FLD_ISSET(lsm_tree->bloom, WT_LSM_BLOOM_OLDEST))
WT_ERR_MSG(session, EINVAL,
"Bloom filters can only be created on newest and oldest "
"chunks if bloom filters are enabled");
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_config", &cval));
if (cval.type == WT_CONFIG_ITEM_STRUCT) {
cval.str++;
cval.len -= 2;
}
WT_ERR(__wt_strndup(
session, cval.str, cval.len, &lsm_tree->bloom_config));
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_bit_count", &cval));
lsm_tree->bloom_bit_count = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_hash_count", &cval));
lsm_tree->bloom_hash_count = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm.chunk_max", &cval));
lsm_tree->chunk_max = (uint64_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm.chunk_size", &cval));
lsm_tree->chunk_size = (uint64_t)cval.val;
if (lsm_tree->chunk_size > lsm_tree->chunk_max)
WT_ERR_MSG(session, EINVAL,
"Chunk size (chunk_size) must be smaller than or equal to "
"the maximum chunk size (chunk_max)");
WT_ERR(__wt_config_gets(session, cfg, "lsm.merge_max", &cval));
lsm_tree->merge_max = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm.merge_min", &cval));
lsm_tree->merge_min = (uint32_t)cval.val;
if (lsm_tree->merge_min > lsm_tree->merge_max)
WT_ERR_MSG(session, EINVAL,
"LSM merge_min must be less than or equal to merge_max");
/*
* Set up the config for each chunk.
*
* Make the memory_page_max double the chunk size, so application
* threads don't immediately try to force evict the chunk when the
* worker thread clears the NO_EVICTION flag.
*/
WT_ERR(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_buf_fmt(session, buf,
"%s,key_format=u,value_format=u,memory_page_max=%" PRIu64,
config, 2 * lsm_tree->chunk_max));
WT_ERR(__wt_strndup(
session, buf->data, buf->size, &lsm_tree->file_config));
/* Create the first chunk and flush the metadata. */
WT_ERR(__wt_lsm_meta_write(session, lsm_tree));
/* Discard our partially populated handle. */
ret = __lsm_tree_discard(session, lsm_tree);
lsm_tree = NULL;
/*
* Open our new tree and add it to the handle cache. Don't discard on
* error: the returned handle is NULL on error, and the metadata
* tracking macros handle cleaning up on failure.
*/
if (ret == 0)
ret = __lsm_tree_open(session, uri, &lsm_tree);
if (ret == 0)
__wt_lsm_tree_release(session, lsm_tree);
if (0) {
err: WT_TRET(__lsm_tree_discard(session, lsm_tree));
}
__wt_scr_free(&buf);
return (ret);
}
/*
* __create_table --
* Create a table.
*/
static int
__create_table(WT_SESSION_IMPL *session,
const char *name, bool exclusive, const char *config)
{
WT_CONFIG conf;
WT_CONFIG_ITEM cgkey, cgval, cval;
WT_DECL_RET;
WT_TABLE *table;
const char *cfg[4] =
{ WT_CONFIG_BASE(session, table_meta), config, NULL, NULL };
const char *tablename;
char *tableconf, *cgname;
size_t cgsize;
int ncolgroups;
bool exists;
cgname = NULL;
table = NULL;
tableconf = NULL;
exists = false;
tablename = name;
if (!WT_PREFIX_SKIP(tablename, "table:"))
return (EINVAL);
if ((ret = __wt_schema_get_table(session,
tablename, strlen(tablename), false, &table)) == 0) {
if (exclusive)
WT_ERR(EEXIST);
exists = true;
}
WT_RET_NOTFOUND_OK(ret);
WT_ERR(__wt_config_gets(session, cfg, "colgroups", &cval));
WT_ERR(__wt_config_subinit(session, &conf, &cval));
for (ncolgroups = 0;
(ret = __wt_config_next(&conf, &cgkey, &cgval)) == 0;
ncolgroups++)
;
WT_ERR_NOTFOUND_OK(ret);
WT_ERR(__wt_config_collapse(session, cfg, &tableconf));
if (exists) {
if (strcmp(tableconf, table->config) != 0)
WT_ERR_MSG(session, EINVAL,
"%s: does not match existing configuration", name);
goto err;
}
WT_ERR(__wt_metadata_insert(session, name, tableconf));
/* Attempt to open the table now to catch any errors. */
WT_ERR(__wt_schema_get_table(
session, tablename, strlen(tablename), true, &table));
if (ncolgroups == 0) {
cgsize = strlen("colgroup:") + strlen(tablename) + 1;
WT_ERR(__wt_calloc_def(session, cgsize, &cgname));
snprintf(cgname, cgsize, "colgroup:%s", tablename);
WT_ERR(__create_colgroup(session, cgname, exclusive, config));
}
if (0) {
err: if (table != NULL) {
WT_TRET(__wt_schema_remove_table(session, table));
table = NULL;
}
}
if (table != NULL)
__wt_schema_release_table(session, table);
__wt_free(session, cgname);
__wt_free(session, tableconf);
return (ret);
}
/*
* __wt_lsm_tree_create --
* Create an LSM tree structure for the given name.
*/
int
__wt_lsm_tree_create(WT_SESSION_IMPL *session,
const char *uri, int exclusive, const char *config)
{
WT_CONFIG_ITEM cval;
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_LSM_TREE *lsm_tree;
const char *cfg[] =
{ WT_CONFIG_BASE(session, session_create), config, NULL };
const char *tmpconfig;
/* If the tree is open, it already exists. */
if ((ret = __wt_lsm_tree_get(session, uri, 0, &lsm_tree)) == 0) {
__wt_lsm_tree_release(session, lsm_tree);
return (exclusive ? EEXIST : 0);
}
WT_RET_NOTFOUND_OK(ret);
/*
* If the tree has metadata, it already exists.
*
* !!!
* Use a local variable: we don't care what the existing configuration
* is, but we don't want to overwrite the real config.
*/
if (__wt_metadata_search(session, uri, &tmpconfig) == 0) {
__wt_free(session, tmpconfig);
return (exclusive ? EEXIST : 0);
}
WT_RET_NOTFOUND_OK(ret);
WT_RET(__wt_config_gets(session, cfg, "key_format", &cval));
if (WT_STRING_MATCH("r", cval.str, cval.len))
WT_RET_MSG(session, EINVAL,
"LSM trees cannot be configured as column stores");
WT_RET(__wt_calloc_def(session, 1, &lsm_tree));
WT_ERR(__lsm_tree_set_name(session, lsm_tree, uri));
WT_ERR(__wt_config_gets(session, cfg, "key_format", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len,
&lsm_tree->key_format));
WT_ERR(__wt_config_gets(session, cfg, "value_format", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len,
&lsm_tree->value_format));
WT_ERR(__wt_config_gets(session, cfg, "collator", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len,
&lsm_tree->collator_name));
WT_ERR(__wt_config_gets(session, cfg, "lsm.auto_throttle", &cval));
if (cval.val)
F_SET(lsm_tree, WT_LSM_TREE_THROTTLE);
else
F_CLR(lsm_tree, WT_LSM_TREE_THROTTLE);
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom", &cval));
FLD_SET(lsm_tree->bloom,
(cval.val == 0 ? WT_LSM_BLOOM_OFF : WT_LSM_BLOOM_MERGED));
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_oldest", &cval));
if (cval.val != 0)
FLD_SET(lsm_tree->bloom, WT_LSM_BLOOM_OLDEST);
if (FLD_ISSET(lsm_tree->bloom, WT_LSM_BLOOM_OFF) &&
FLD_ISSET(lsm_tree->bloom, WT_LSM_BLOOM_OLDEST))
WT_ERR_MSG(session, EINVAL,
"Bloom filters can only be created on newest and oldest "
"chunks if bloom filters are enabled");
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_config", &cval));
if (cval.type == WT_CONFIG_ITEM_STRUCT) {
cval.str++;
cval.len -= 2;
}
WT_ERR(__wt_strndup(session, cval.str, cval.len,
&lsm_tree->bloom_config));
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_bit_count", &cval));
lsm_tree->bloom_bit_count = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm.bloom_hash_count", &cval));
lsm_tree->bloom_hash_count = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm.chunk_max", &cval));
lsm_tree->chunk_max = (uint64_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm.chunk_size", &cval));
lsm_tree->chunk_size = (uint64_t)cval.val;
if (lsm_tree->chunk_size > lsm_tree->chunk_max)
WT_ERR_MSG(session, EINVAL,
"Chunk size (chunk_size) must be smaller than or equal to "
"the maximum chunk size (chunk_max)");
WT_ERR(__wt_config_gets(session, cfg, "lsm.merge_max", &cval));
lsm_tree->merge_max = (uint32_t)cval.val;
lsm_tree->merge_min = lsm_tree->merge_max / 2;
WT_ERR(__wt_config_gets(session, cfg, "lsm.merge_threads", &cval));
lsm_tree->merge_threads = (uint32_t)cval.val;
/* Sanity check that api_data.py is in sync with lsm.h */
WT_ASSERT(session, lsm_tree->merge_threads <= WT_LSM_MAX_WORKERS);
/*
* Set up the config for each chunk. If possible, avoid high latencies
* from fsync by flushing the cache every 8MB (will be overridden by
* any application setting).
*/
tmpconfig = "";
#ifdef HAVE_SYNC_FILE_RANGE
if (!S2C(session)->direct_io)
tmpconfig = "os_cache_dirty_max=8MB,";
#endif
WT_ERR(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_buf_fmt(session, buf,
"%s%s,key_format=u,value_format=u", tmpconfig, config));
lsm_tree->file_config = __wt_buf_steal(session, buf, NULL);
/* Create the first chunk and flush the metadata. */
WT_ERR(__wt_lsm_meta_write(session, lsm_tree));
/* Discard our partially populated handle. */
ret = __lsm_tree_discard(session, lsm_tree);
lsm_tree = NULL;
/*
* Open our new tree and add it to the handle cache. Don't discard on
* error: the returned handle is NULL on error, and the metadata
* tracking macros handle cleaning up on failure.
*/
if (ret == 0)
ret = __lsm_tree_open(session, uri, &lsm_tree);
if (ret == 0)
__wt_lsm_tree_release(session, lsm_tree);
if (0) {
err: WT_TRET(__lsm_tree_discard(session, lsm_tree));
}
__wt_scr_free(&buf);
return (ret);
}
/*
* __wt_lsm_tree_create --
* Create an LSM tree structure for the given name.
*/
int
__wt_lsm_tree_create(WT_SESSION_IMPL *session,
const char *uri, int exclusive, const char *config)
{
WT_CONFIG_ITEM cval;
WT_DECL_ITEM(buf);
WT_DECL_RET;
WT_LSM_TREE *lsm_tree;
const char *cfg[] = API_CONF_DEFAULTS(session, create, config);
const char *tmpconfig;
/* If the tree is open, it already exists. */
if ((ret = __wt_lsm_tree_get(session, uri, 0, &lsm_tree)) == 0) {
__wt_lsm_tree_release(session, lsm_tree);
return (exclusive ? EEXIST : 0);
}
WT_RET_NOTFOUND_OK(ret);
/*
* If the tree has metadata, it already exists.
*
* !!!
* Use a local variable: we don't care what the existing configuration
* is, but we don't want to overwrite the real config.
*/
if (__wt_metadata_read(session, uri, &tmpconfig) == 0) {
__wt_free(session, tmpconfig);
return (exclusive ? EEXIST : 0);
}
WT_RET_NOTFOUND_OK(ret);
WT_RET(__wt_config_gets(session, cfg, "key_format", &cval));
if (WT_STRING_MATCH("r", cval.str, cval.len))
WT_RET_MSG(session, EINVAL,
"LSM trees cannot be configured as column stores");
WT_RET(__wt_calloc_def(session, 1, &lsm_tree));
WT_RET(__lsm_tree_set_name(session, lsm_tree, uri));
WT_ERR(__wt_config_gets(session, cfg, "key_format", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len,
&lsm_tree->key_format));
WT_ERR(__wt_config_gets(session, cfg, "value_format", &cval));
WT_ERR(__wt_strndup(session, cval.str, cval.len,
&lsm_tree->value_format));
WT_ERR(__wt_config_gets(session, cfg, "lsm_bloom", &cval));
FLD_SET(lsm_tree->bloom,
(cval.val == 0 ? WT_LSM_BLOOM_OFF : WT_LSM_BLOOM_MERGED));
WT_ERR(__wt_config_gets(session, cfg, "lsm_bloom_newest", &cval));
if (cval.val != 0)
FLD_SET(lsm_tree->bloom, WT_LSM_BLOOM_NEWEST);
WT_ERR(__wt_config_gets(session, cfg, "lsm_bloom_oldest", &cval));
if (cval.val != 0)
FLD_SET(lsm_tree->bloom, WT_LSM_BLOOM_OLDEST);
if (FLD_ISSET(lsm_tree->bloom, WT_LSM_BLOOM_OFF) &&
(FLD_ISSET(lsm_tree->bloom, WT_LSM_BLOOM_NEWEST) ||
FLD_ISSET(lsm_tree->bloom, WT_LSM_BLOOM_OLDEST)))
WT_ERR_MSG(session, EINVAL,
"Bloom filters can only be created on newest and oldest "
"chunks if bloom filters are enabled");
WT_ERR(__wt_config_gets(session, cfg, "lsm_bloom_config", &cval));
if (cval.type == ITEM_STRUCT) {
cval.str++;
cval.len -= 2;
}
WT_ERR(__wt_strndup(session, cval.str, cval.len,
&lsm_tree->bloom_config));
WT_ERR(__wt_config_gets(session, cfg, "lsm_bloom_bit_count", &cval));
lsm_tree->bloom_bit_count = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm_bloom_hash_count", &cval));
lsm_tree->bloom_hash_count = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm_chunk_size", &cval));
lsm_tree->chunk_size = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm_merge_max", &cval));
lsm_tree->merge_max = (uint32_t)cval.val;
WT_ERR(__wt_config_gets(session, cfg, "lsm_merge_threads", &cval));
lsm_tree->merge_threads = (uint32_t)cval.val;
/* Sanity check that api_data.py is in sync with lsm.h */
WT_ASSERT(session, lsm_tree->merge_threads <= WT_LSM_MAX_WORKERS);
WT_ERR(__wt_scr_alloc(session, 0, &buf));
WT_ERR(__wt_buf_fmt(session, buf,
"%s,key_format=u,value_format=u", config));
lsm_tree->file_config = __wt_buf_steal(session, buf, NULL);
/* Create the first chunk and flush the metadata. */
WT_ERR(__wt_lsm_meta_write(session, lsm_tree));
/* Discard our partially populated handle. */
ret = __lsm_tree_discard(session, lsm_tree);
lsm_tree = NULL;
/*
* Open our new tree and add it to the handle cache. Don't discard on
* error: the returned handle is NULL on error, and the metadata
* tracking macros handle cleaning up on failure.
*/
if (ret == 0)
ret = __lsm_tree_open(session, uri, &lsm_tree);
if (ret == 0)
__wt_lsm_tree_release(session, lsm_tree);
if (0) {
err: WT_TRET(__lsm_tree_discard(session, lsm_tree));
}
__wt_scr_free(&buf);
return (ret);
}
/*
* __conn_dhandle_get --
* Allocate a new data handle, lock it exclusively, and return it linked
* into the connection's list.
*/
static int
__conn_dhandle_get(WT_SESSION_IMPL *session,
const char *name, const char *ckpt, uint32_t flags)
{
WT_BTREE *btree;
WT_CONNECTION_IMPL *conn;
WT_DATA_HANDLE *dhandle;
WT_DECL_RET;
uint32_t bucket;
conn = S2C(session);
/*
* We have the handle lock, check whether we can find the handle we
* are looking for. If we do, and we can lock it in the state we
* want, this session will take ownership and we are done.
*/
ret = __wt_conn_dhandle_find(session, name, ckpt, flags);
if (ret == 0) {
dhandle = session->dhandle;
WT_RET(__conn_dhandle_open_lock(session, dhandle, flags));
return (0);
}
WT_RET_NOTFOUND_OK(ret);
/*
* If no handle was found, allocate the data handle and a btree handle,
* then initialize the data handle. Exclusively lock the data handle
* before inserting it in the list.
*/
WT_RET(__wt_calloc_one(session, &dhandle));
WT_ERR(__wt_rwlock_alloc(session, &dhandle->rwlock, "data handle"));
dhandle->name_hash = __wt_hash_city64(name, strlen(name));
WT_ERR(__wt_strdup(session, name, &dhandle->name));
if (ckpt != NULL)
WT_ERR(__wt_strdup(session, ckpt, &dhandle->checkpoint));
WT_ERR(__wt_calloc_one(session, &btree));
dhandle->handle = btree;
btree->dhandle = dhandle;
WT_ERR(__wt_spin_init(
session, &dhandle->close_lock, "data handle close"));
F_SET(dhandle, WT_DHANDLE_EXCLUSIVE);
WT_ERR(__wt_writelock(session, dhandle->rwlock));
/*
* Prepend the handle to the connection list, assuming we're likely to
* need new files again soon, until they are cached by all sessions.
* Find the right hash bucket to insert into as well.
*/
WT_ASSERT(session, F_ISSET(session, WT_SESSION_HANDLE_LIST_LOCKED));
bucket = dhandle->name_hash % WT_HASH_ARRAY_SIZE;
WT_CONN_DHANDLE_INSERT(conn, dhandle, bucket);
session->dhandle = dhandle;
return (0);
err: WT_TRET(__wt_rwlock_destroy(session, &dhandle->rwlock));
__wt_free(session, dhandle->name);
__wt_free(session, dhandle->checkpoint);
__wt_free(session, dhandle->handle); /* btree free */
__wt_spin_destroy(session, &dhandle->close_lock);
__wt_overwrite_and_free(session, dhandle);
return (ret);
}
/*
* __create_table --
* Create a table.
*/
static int
__create_table(WT_SESSION_IMPL *session,
const char *name, int exclusive, const char *config)
{
WT_CONFIG conf;
WT_CONFIG_ITEM cgkey, cgval, cval;
WT_DECL_RET;
WT_TABLE *table;
const char *cfg[4] =
{ WT_CONFIG_BASE(session, table_meta), config, NULL, NULL };
const char *tablename;
char *tableconf, *cgname;
size_t cgsize;
int ncolgroups;
cgname = NULL;
table = NULL;
tableconf = NULL;
tablename = name;
if (!WT_PREFIX_SKIP(tablename, "table:"))
return (EINVAL);
if ((ret = __wt_schema_get_table(session,
tablename, strlen(tablename), 0, &table)) == 0) {
__wt_schema_release_table(session, table);
return (exclusive ? EEXIST : 0);
}
WT_RET_NOTFOUND_OK(ret);
WT_ERR(__wt_config_gets(session, cfg, "colgroups", &cval));
WT_ERR(__wt_config_subinit(session, &conf, &cval));
for (ncolgroups = 0;
(ret = __wt_config_next(&conf, &cgkey, &cgval)) == 0;
ncolgroups++)
;
WT_ERR_NOTFOUND_OK(ret);
WT_ERR(__wt_config_collapse(session, cfg, &tableconf));
if ((ret = __wt_metadata_insert(session, name, tableconf)) != 0) {
/*
* If the entry already exists in the metadata, we're done.
* This is an error for exclusive creates but okay otherwise.
*/
if (ret == WT_DUPLICATE_KEY)
ret = exclusive ? EEXIST : 0;
goto err;
}
/* Attempt to open the table now to catch any errors. */
WT_ERR(__wt_schema_get_table(
session, tablename, strlen(tablename), 1, &table));
if (ncolgroups == 0) {
cgsize = strlen("colgroup:") + strlen(tablename) + 1;
WT_ERR(__wt_calloc_def(session, cgsize, &cgname));
snprintf(cgname, cgsize, "colgroup:%s", tablename);
WT_ERR(__create_colgroup(session, cgname, exclusive, config));
}
if (0) {
err: if (table != NULL) {
WT_TRET(__wt_schema_remove_table(session, table));
table = NULL;
}
}
if (table != NULL)
__wt_schema_release_table(session, table);
__wt_free(session, cgname);
__wt_free(session, tableconf);
return (ret);
}
/*
* __wt_struct_reformat --
* Given a table and a list of columns (which could be values in a column
* group or index keys), calculate the resulting new format string.
* The result will be appended to the format buffer.
*/
int
__wt_struct_reformat(WT_SESSION_IMPL *session, WT_TABLE *table,
const char *columns, size_t len, const char *extra_cols, bool value_only,
WT_ITEM *format)
{
WT_CONFIG config;
WT_CONFIG_ITEM k, next_k, next_v;
WT_DECL_PACK_VALUE(pv);
WT_DECL_RET;
bool have_next;
__wt_config_initn(session, &config, columns, len);
/*
* If an empty column list is specified, this will fail with
* WT_NOTFOUND, that's okay.
*/
WT_RET_NOTFOUND_OK(ret = __wt_config_next(&config, &next_k, &next_v));
if (ret == WT_NOTFOUND) {
if (extra_cols != NULL) {
__wt_config_init(session, &config, extra_cols);
WT_RET(__wt_config_next(&config, &next_k, &next_v));
extra_cols = NULL;
} else if (format->size == 0) {
WT_RET(__wt_buf_set(session, format, "", 1));
return (0);
}
}
do {
k = next_k;
ret = __wt_config_next(&config, &next_k, &next_v);
if (ret != 0 && ret != WT_NOTFOUND)
return (ret);
have_next = ret == 0;
if (!have_next && extra_cols != NULL) {
__wt_config_init(session, &config, extra_cols);
WT_RET(__wt_config_next(&config, &next_k, &next_v));
have_next = true;
extra_cols = NULL;
}
if ((ret = __find_column_format(session,
table, &k, value_only, &pv)) != 0) {
if (value_only && ret == EINVAL)
WT_RET_MSG(session, EINVAL,
"A column group cannot store key column "
"'%.*s' in its value", (int)k.len, k.str);
WT_RET_MSG(session, EINVAL,
"Column '%.*s' not found", (int)k.len, k.str);
}
/*
* Check whether we're moving an unsized WT_ITEM from the end
* to the middle, or vice-versa. This determines whether the
* size needs to be prepended. This is the only case where the
* destination size can be larger than the source size.
*/
if (pv.type == 'u' && !pv.havesize && have_next)
pv.type = 'U';
else if (pv.type == 'U' && !have_next)
pv.type = 'u';
if (pv.havesize)
WT_RET(__wt_buf_catfmt(session,
format, "%" PRIu32 "%c", pv.size, pv.type));
else
WT_RET(__wt_buf_catfmt(session, format, "%c", pv.type));
} while (have_next);
return (0);
}
/*
* __wt_conn_statistics_config --
* Set statistics configuration.
*/
int
__wt_conn_statistics_config(WT_SESSION_IMPL *session, const char *cfg[])
{
WT_CONFIG_ITEM cval, sval;
WT_CONNECTION_IMPL *conn;
WT_DECL_RET;
uint32_t flags;
int set;
conn = S2C(session);
WT_RET(__wt_config_gets(session, cfg, "statistics", &cval));
flags = 0;
set = 0;
if ((ret = __wt_config_subgets(
session, &cval, "none", &sval)) == 0 && sval.val != 0) {
flags = 0;
++set;
}
WT_RET_NOTFOUND_OK(ret);
if ((ret = __wt_config_subgets(
session, &cval, "fast", &sval)) == 0 && sval.val != 0) {
LF_SET(WT_STAT_TYPE_FAST);
++set;
}
WT_RET_NOTFOUND_OK(ret);
if ((ret = __wt_config_subgets(
session, &cval, "all", &sval)) == 0 && sval.val != 0) {
LF_SET(
WT_STAT_TYPE_ALL | WT_STAT_TYPE_CACHE_WALK |
WT_STAT_TYPE_FAST | WT_STAT_TYPE_TREE_WALK);
++set;
}
WT_RET_NOTFOUND_OK(ret);
if (set > 1)
WT_RET_MSG(session, EINVAL,
"Only one of all, fast, none configuration values should "
"be specified");
/*
* Now that we've parsed general statistics categories, process
* sub-categories.
*/
if ((ret = __wt_config_subgets(
session, &cval, "cache_walk", &sval)) == 0 && sval.val != 0)
/*
* Configuring cache walk statistics implies fast statistics.
* Keep that knowledge internal for now - it may change in the
* future.
*/
LF_SET(WT_STAT_TYPE_FAST | WT_STAT_TYPE_CACHE_WALK);
WT_RET_NOTFOUND_OK(ret);
if ((ret = __wt_config_subgets(
session, &cval, "tree_walk", &sval)) == 0 && sval.val != 0)
/*
* Configuring tree walk statistics implies fast statistics.
* Keep that knowledge internal for now - it may change in the
* future.
*/
LF_SET(WT_STAT_TYPE_FAST | WT_STAT_TYPE_TREE_WALK);
WT_RET_NOTFOUND_OK(ret);
if ((ret = __wt_config_subgets(
session, &cval, "clear", &sval)) == 0 && sval.val != 0) {
if (!LF_ISSET(WT_STAT_TYPE_ALL | WT_STAT_TYPE_CACHE_WALK |
WT_STAT_TYPE_FAST | WT_STAT_TYPE_TREE_WALK))
WT_RET_MSG(session, EINVAL,
"the value \"clear\" can only be specified if "
"statistics are enabled");
LF_SET(WT_STAT_CLEAR);
}
WT_RET_NOTFOUND_OK(ret);
/* Configuring statistics clears any existing values. */
conn->stat_flags = flags;
return (0);
}
