const char *
db_iter_next(db_iter_t *it, size_t *klen) {
const char *next_key = NULL;
*klen = 0;
if (it->first) {
if (!leveldb_iter_valid(it->it))
return NULL;
it->first = 0;
} else {
leveldb_iter_next(it->it);
if (!leveldb_iter_valid(it->it))
return NULL;
}
next_key = leveldb_iter_key(it->it, klen);
if (it->base_key_len > *klen) {
klen = 0;
return NULL;
}
if (strncmp(it->base_key, next_key, it->base_key_len) != 0) {
klen = 0;
return NULL;
}
return next_key;
}
int xleveldb_firstkey(struct db_conn *db, unsigned char *key, size_t *ksize)
{
int rv = 0;
const char *db_key;
size_t db_ksize;
leveldb_readoptions_t *options = leveldb_readoptions_create();
leveldb_iterator_t *it = leveldb_create_iterator(db->conn, options);
leveldb_iter_seek_to_first(it);
if (! leveldb_iter_valid(it)) {
rv = 0;
goto exit;
}
db_key = leveldb_iter_key(it, &db_ksize);
if (db_key == NULL || db_ksize > *ksize) {
rv = 0;
goto exit;
}
*ksize = db_ksize;
memcpy(key, db_key, db_ksize);
rv = 1;
exit:
leveldb_readoptions_destroy(options);
leveldb_iter_destroy(it);
return rv;
}
int ldb_cursor_next(LDB_cursor *const cursor, DB_val *const key, DB_val *const val, int const dir) {
if(!cursor) return DB_EINVAL;
if(0 == dir) return DB_EINVAL;
if(dir > 0) leveldb_iter_next(cursor->iter);
if(dir < 0) leveldb_iter_prev(cursor->iter);
cursor->valid = !!leveldb_iter_valid(cursor->iter);
return ldb_cursor_current(cursor, key, val);
}
int xleveldb_nextkey(struct db_conn *db,
const unsigned char *key, size_t ksize,
unsigned char *nextkey, size_t *nksize)
{
int rv;
const char *db_nextkey;
size_t db_nksize = 0;
leveldb_readoptions_t *options = leveldb_readoptions_create();
leveldb_iterator_t *it = leveldb_create_iterator(db->conn, options);
leveldb_iter_seek(it, (const char *) key, ksize);
if (! leveldb_iter_valid(it)) {
rv = 0;
goto exit;
}
leveldb_iter_next(it);
if (! leveldb_iter_valid(it)) {
rv = 0;
goto exit;
}
db_nextkey = leveldb_iter_key(it, &db_nksize);
if (db_nextkey == NULL || db_nksize > *nksize) {
rv = 0;
goto exit;
}
*nksize = db_nksize;
memcpy(nextkey, db_nextkey, db_nksize);
rv = 1;
exit:
leveldb_iter_destroy(it);
leveldb_readoptions_destroy(options);
return rv;
}
int ldb_cursor_seek(LDB_cursor *const cursor, DB_val *const key, DB_val *const val, int const dir) {
if(!cursor) return DB_EINVAL;
if(!key) return DB_EINVAL;
DB_val const orig = *key;
leveldb_iter_seek(cursor->iter, key->data, key->size);
cursor->valid = !!leveldb_iter_valid(cursor->iter);
int rc = ldb_cursor_current(cursor, key, val);
if(dir > 0) return rc;
if(dir < 0) {
if(DB_SUCCESS != rc) {
leveldb_iter_seek_to_last(cursor->iter);
} else if(0 != cursor->cmp(key, &orig)) {
leveldb_iter_prev(cursor->iter);
} else return rc;
cursor->valid = !!leveldb_iter_valid(cursor->iter);
return ldb_cursor_current(cursor, key, val);
}
if(DB_SUCCESS != rc) return rc;
if(0 == cursor->cmp(key, &orig)) return rc;
cursor->valid = 0;
return DB_NOTFOUND;
}
sds
cursor_next_key(cursor_t *cursor)
{
const char *str;
size_t len;
sds key;
if (!leveldb_iter_valid(cursor->iter)) {
return NULL;
}
str = leveldb_iter_key(cursor->iter, &len);
key = sdscpylen(sdsempty(), str, len); /* TODO: check mem */
leveldb_iter_next(cursor->iter);
return key;
}
rstatus_t
cursor_next(cursor_t *cursor, sds *key, sds *val, uint64_t *expire)
{
size_t len;
const char *str;
if (!leveldb_iter_valid(cursor->iter)) {
return NC_ERROR;
}
str = leveldb_iter_key(cursor->iter, &len);
*key = sdsnewlen(str, len);
ASSERT(*key != NULL); /* TODO: check mem */
str = leveldb_iter_value(cursor->iter, &len);
store_decode_val(str, len, val, expire);
leveldb_iter_next(cursor->iter);
return NC_OK;
}
static
void listmdb(struct MetaDB* mdb) {
leveldb_iterator_t* iter =
leveldb_create_iterator(mdb->db, mdb->scan_options);
leveldb_iter_seek_to_first(iter);
while (leveldb_iter_valid(iter)) {
size_t klen;
const char* kstr = leveldb_iter_key(iter, &klen);
const metadb_key_t* key = (const metadb_key_t *) kstr;
printf("%ld %ld %s\n",
key->parent_id, key->partition_id, key->name_hash);
size_t vlen;
const char* vstr = leveldb_iter_value(iter, &vlen);
(void) vstr;
leveldb_iter_next(iter);
}
leveldb_iter_destroy(iter);
}
static struct stat_cache_entry *stat_cache_iter_current(struct stat_cache_iterator *iter) {
struct stat_cache_entry *entry;
const struct stat_cache_value *value;
const char *key;
size_t klen, vlen;
assert(iter);
//log_print(LOG_DEBUG, "checking iterator validity");
// If we've gone beyond the end of the dataset, quit.
if (!leveldb_iter_valid(iter->ldb_iter)) {
return NULL;
}
//log_print(LOG_DEBUG, "fetching the key");
key = leveldb_iter_key(iter->ldb_iter, &klen);
// log_print(LOG_DEBUG, "fetched key: %s", key);
//log_print(LOG_DEBUG, "fetched the key");
// If we've gone beyond the end of the prefix range, quit.
// Use (iter->key_prefix_len - 1) to exclude the NULL at the prefix end.
if (strncmp(key, iter->key_prefix, iter->key_prefix_len - 1) != 0) {
log_print(LOG_DEBUG, "Key %s does not match prefix %s for %lu characters. Ending iteration.", key, iter->key_prefix, iter->key_prefix_len);
return NULL;
}
//log_print(LOG_DEBUG, "fetching the value");
value = (const struct stat_cache_value *) leveldb_iter_value(iter->ldb_iter, &vlen);
entry = malloc(sizeof(struct stat_cache_entry));
entry->key = key;
entry->value = value;
// log_print(LOG_DEBUG, "iter_current: key = %s; value = %s", key, value);
return entry;
}
int main(int argc, char** argv) {
leveldb_t* db;
leveldb_comparator_t* cmp;
leveldb_cache_t* cache;
leveldb_env_t* env;
leveldb_options_t* options;
leveldb_readoptions_t* roptions;
leveldb_writeoptions_t* woptions;
char* err = NULL;
#if defined(LEVELDB_PLATFORM_WINDOWS)
snprintf(dbname, sizeof(dbname), "tmp\\leveldb_c_test");
#else
snprintf(dbname, sizeof(dbname), "/tmp/leveldb_c_test-%d",
((int) geteuid()));
#endif
StartPhase("create_objects");
cmp = leveldb_comparator_create(NULL, CmpDestroy, CmpCompare, CmpName);
env = leveldb_create_default_env();
cache = leveldb_cache_create_lru(100000);
options = leveldb_options_create();
leveldb_options_set_comparator(options, cmp);
leveldb_options_set_error_if_exists(options, 1);
leveldb_options_set_cache(options, cache);
leveldb_options_set_env(options, env);
leveldb_options_set_info_log(options, NULL);
leveldb_options_set_write_buffer_size(options, 100000);
leveldb_options_set_paranoid_checks(options, 1);
leveldb_options_set_max_open_files(options, 10);
leveldb_options_set_block_size(options, 1024);
leveldb_options_set_block_restart_interval(options, 8);
leveldb_options_set_compression(options, leveldb_no_compression);
roptions = leveldb_readoptions_create();
leveldb_readoptions_set_verify_checksums(roptions, 1);
leveldb_readoptions_set_fill_cache(roptions, 0);
woptions = leveldb_writeoptions_create();
leveldb_writeoptions_set_sync(woptions, 1);
StartPhase("destroy");
leveldb_destroy_db(options, dbname, &err);
leveldb_free(&err);
StartPhase("open_error");
db = leveldb_open(options, dbname, &err);
CheckCondition(err != NULL);
leveldb_free(&err);
StartPhase("open");
leveldb_options_set_create_if_missing(options, 1);
db = leveldb_open(options, dbname, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", NULL);
StartPhase("put");
leveldb_put(db, woptions, "foo", 3, "hello", 5, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", "hello");
StartPhase("writebatch");
{
int pos = 0;
leveldb_writebatch_t* wb = leveldb_writebatch_create();
leveldb_writebatch_put(wb, "foo", 3, "a", 1);
leveldb_writebatch_clear(wb);
leveldb_writebatch_put(wb, "bar", 3, "b", 1);
leveldb_writebatch_put(wb, "box", 3, "c", 1);
leveldb_writebatch_delete(wb, "bar", 3);
leveldb_write(db, woptions, wb, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", "hello");
CheckGet(db, roptions, "bar", NULL);
CheckGet(db, roptions, "box", "c");
leveldb_writebatch_iterate(wb, &pos, CheckPut, CheckDel);
CheckCondition(pos == 3);
leveldb_writebatch_destroy(wb);
}
StartPhase("iter");
{
leveldb_iterator_t* iter = leveldb_create_iterator(db, roptions);
CheckCondition(!leveldb_iter_valid(iter));
leveldb_iter_seek_to_first(iter);
CheckCondition(leveldb_iter_valid(iter));
CheckIter(iter, "box", "c");
leveldb_iter_next(iter);
CheckIter(iter, "foo", "hello");
leveldb_iter_prev(iter);
CheckIter(iter, "box", "c");
leveldb_iter_prev(iter);
CheckCondition(!leveldb_iter_valid(iter));
leveldb_iter_seek_to_last(iter);
CheckIter(iter, "foo", "hello");
leveldb_iter_seek(iter, "b", 1);
CheckIter(iter, "box", "c");
leveldb_iter_get_error(iter, &err);
CheckNoError(err);
leveldb_iter_destroy(iter);
}
StartPhase("approximate_sizes");
{
int i;
int n = 20000;
char keybuf[100];
char valbuf[100];
uint64_t sizes[2];
const char* start[2] = { "a", "k00000000000000010000" };
size_t start_len[2] = { 1, 21 };
const char* limit[2] = { "k00000000000000010000", "z" };
size_t limit_len[2] = { 21, 1 };
leveldb_writeoptions_set_sync(woptions, 0);
for (i = 0; i < n; i++) {
snprintf(keybuf, sizeof(keybuf), "k%020d", i);
snprintf(valbuf, sizeof(valbuf), "v%020d", i);
leveldb_put(db, woptions, keybuf, strlen(keybuf), valbuf, strlen(valbuf),
&err);
CheckNoError(err);
}
leveldb_approximate_sizes(db, 2, start, start_len, limit, limit_len, sizes);
CheckCondition(sizes[0] > 0);
CheckCondition(sizes[1] > 0);
}
StartPhase("property");
{
char* prop = leveldb_property_value(db, "nosuchprop");
CheckCondition(prop == NULL);
prop = leveldb_property_value(db, "leveldb.stats");
CheckCondition(prop != NULL);
leveldb_free(&prop);
}
StartPhase("snapshot");
{
const leveldb_snapshot_t* snap;
snap = leveldb_create_snapshot(db);
leveldb_delete(db, woptions, "foo", 3, &err);
CheckNoError(err);
leveldb_readoptions_set_snapshot(roptions, snap);
CheckGet(db, roptions, "foo", "hello");
leveldb_readoptions_set_snapshot(roptions, NULL);
CheckGet(db, roptions, "foo", NULL);
leveldb_release_snapshot(db, snap);
}
StartPhase("repair");
{
leveldb_close(db);
leveldb_options_set_create_if_missing(options, 0);
leveldb_options_set_error_if_exists(options, 0);
leveldb_repair_db(options, dbname, &err);
CheckNoError(err);
db = leveldb_open(options, dbname, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", NULL);
CheckGet(db, roptions, "bar", NULL);
CheckGet(db, roptions, "box", "c");
}
StartPhase("cleanup");
leveldb_close(db);
leveldb_options_destroy(options);
leveldb_readoptions_destroy(roptions);
leveldb_writeoptions_destroy(woptions);
leveldb_cache_destroy(cache);
leveldb_comparator_destroy(cmp);
leveldb_env_destroy(env);
fprintf(stderr, "PASS\n");
return 0;
}
int
txdb_open(struct config *config,
char **errStr,
struct txdb **out)
{
leveldb_iterator_t* iter;
struct txdb *txdb;
int res;
txdb = safe_calloc(1, sizeof *txdb);
txdb->hash_txo = hashtable_create(); /* index all interesting txos */
txdb->hash_tx = hashtable_create(); /* all TX brought to our attention */
txdb->path = txdb_get_db_path(config);
txdb->tx_seq = 0;
theTxdb = txdb;
if (!file_exists(txdb->path)) {
Log(LGPFX" txdb DB '%s' does not exist. Creating..\n", txdb->path);
}
res = txdb_open_db(txdb);
if (res) {
*errStr = "failed to open tx DB";
goto error;
}
res = file_chmod(txdb->path, 0700);
if (res) {
Log(LGPFX" Failed to chmod txdb to 0700: %s\n", strerror(res));
goto error;
}
*out = txdb;
iter = leveldb_create_iterator(txdb->db, txdb->rd_opts);
leveldb_iter_seek_to_first(iter);
while (leveldb_iter_valid(iter) && btc->stop == 0) {
const char *key;
const char *val;
size_t klen;
size_t vlen;
key = leveldb_iter_key(iter, &klen);
val = leveldb_iter_value(iter, &vlen);
Log(LGPFX" found entry \"%s\" klen=%zu vlen=%zu\n", key, klen, vlen);
if (klen > 4 && strncmp(key, "/tx/", 4) == 0) {
res = txdb_load_tx(txdb, key, klen, val, vlen);
ASSERT(res == 0);
}
leveldb_iter_next(iter);
}
leveldb_iter_destroy(iter);
txdb_export_tx_info(txdb);
txdb_print_coins(txdb, 1);
exit:
return res;
error:
txdb_close(txdb);
theTxdb = NULL;
*out = NULL;
goto exit;
}
int
main ()
{
unsigned int N_KEYS;
unsigned int N_BATCH;
printf("\n number of keys:");
scanf("%u",&N_KEYS);
printf("\n batch size:");
scanf("%u",&N_BATCH);
tinymt32_t tinymt32;
//initialize random generator
tinymt32_init (&tinymt32, 0);
int iter;
int sec_iter;
int stop;
int counter;
//initialize database
char *errptr = NULL;
leveldb_options_t *options = leveldb_options_create ();
/* initializeOptions */
leveldb_options_set_create_if_missing (options, 1);
leveldb_options_set_write_buffer_size(options,120000000 );
leveldb_options_set_max_open_files(options,800000);
/*open Database */
leveldb_t *db_helper =
leveldb_open (options, "/mnt/database/database_helper", &errptr);
leveldb_t *db = leveldb_open (options, "/mnt/database/database", &errptr);
leveldb_readoptions_t *readoptions = leveldb_readoptions_create ();
leveldb_writeoptions_t *writeoptions = leveldb_writeoptions_create ();
leveldb_writebatch_t* batch=leveldb_writebatch_create();
int64_t diff = zclock_time ();
//write into database_helper
iter=0;
while( iter < N_KEYS)
{
sec_iter=0;
while((iter<N_KEYS) && (sec_iter<N_BATCH)){
unsigned int key = tinymt32_generate_uint32 (&tinymt32);
unsigned int val = tinymt32_generate_uint32 (&tinymt32);
leveldb_writebatch_put (batch,
(const char *) &key, sizeof (int),
(const char *) &val, sizeof (int));
sec_iter++;
iter++;
}
leveldb_write(
db_helper,
writeoptions,
batch,
&errptr);
if(errptr!=NULL){
printf("\n%s",errptr);
}
assert (errptr == NULL);
leveldb_writebatch_clear(batch);
}
leveldb_writebatch_destroy(batch);
diff = zclock_time () - diff;
printf ("\nrandom write: %d", diff);
diff = zclock_time ();
//write sequentially into db
leveldb_iterator_t *liter = leveldb_create_iterator (db_helper,
readoptions);
leveldb_iter_seek_to_first (liter);
while (leveldb_iter_valid (liter))
{
size_t length;
char key[4];
memcpy (key, leveldb_iter_key (liter, &length), 4);
char val[4];
memcpy (val, leveldb_iter_value (liter, &length), 4);
leveldb_iter_get_error (liter, &errptr);
assert (errptr == NULL);
leveldb_put (db,
writeoptions,
(const char *) &key, sizeof (int),
(const char *) &val, sizeof (int), &errptr);
assert (errptr == NULL);
leveldb_iter_next (liter);
}
diff = zclock_time () - diff;
leveldb_close (db);
leveldb_close (db_helper);
}
unsigned char db_iterator_valid(db_iterator_t *it) {
return leveldb_iter_valid(it);
}
static PyObject* RangeIterator_next(RangeIterator *iter)
{
VERBOSE("%s", "Entering RangeIterator_next...");
if (iter->_db == 0 || !leveldb_iter_valid(iter->_iterator)) {
RangeIterator_clean(iter);
return 0;
}
if (iter->_to != NULL) {
const char *tkey; /* c style key */
size_t key_len; /* key length */
if (iter->_iterator != NULL) {
tkey = leveldb_iter_key(iter->_iterator, &key_len);
} else return NULL;
int limit_len = (strlen(iter->_to) > key_len) ? key_len: strlen(iter->_to);
int c = memcmp(iter->_to, tkey, limit_len);
if (!(0 <= c)) {
VERBOSE("%s", "Invalid iterator................................");
RangeIterator_clean(iter);
return 0;
}
}
// get key and (optional) value
const char *ckey; /* c style key */
size_t key_len; /* key length */
if (iter->_iterator != NULL) {
ckey = leveldb_iter_key(iter->_iterator, &key_len);
} else return NULL;
VERBOSE("The key is %s, length is %d", ckey, key_len);
PyObject* key = PyString_FromStringAndSize(ckey, key_len);
PyObject* value = 0;
PyObject* ret = key;
if (key == 0) return 0;
const char *cvalue; /* c style value */
size_t value_len; /* value length */
if (iter->_iterator != NULL) {
cvalue = leveldb_iter_value(iter->_iterator, &value_len);
} else return NULL;
if (iter->_include_value) {
value = PyString_FromStringAndSize(cvalue, value_len);
if (value == 0) {
Py_XDECREF(key);
return 0;
}
}
// key/value pairs are returned as 2-tuples
if (value != NULL) {
ret = PyTuple_New(2);
if (ret == 0) {
Py_DECREF(key);
Py_XDECREF(value);
return 0;
}
PyTuple_SET_ITEM(ret, 0, key);
PyTuple_SET_ITEM(ret, 1, value);
}
// get next value
leveldb_iter_next(iter->_iterator);
// return k/v pair or single key
return ret;
}
char *ldb_values(struct _leveldb_stuff *ldbs, const char *ptn, size_t ptn_len, int *size)
{
char *err = NULL;
char *result = NULL;
char *p_dst = NULL;
char *p_key = NULL;
char *p_value = NULL;
size_t klen = 0;
size_t vlen = 0;
int index = 0;
int i, j, z = 0;
struct kv_list list = { 0 };
struct some_kv *p_new, *p_old, *p_tmp = NULL;
leveldb_iterator_t* iter = leveldb_create_iterator(ldbs->db, ldbs->roptions);
leveldb_iterator_t* iter_save = iter;
if (!!leveldb_iter_valid(iter)) {/* first use it is invalid */
fprintf(stderr, "%s:%d: this iter is valid already!\n", __FILE__, __LINE__);
*size = -1;
return NULL ;
}
leveldb_iter_seek_to_first(iter);
p_old = p_new = &list.head;
while (leveldb_iter_valid(iter)) {
/* parse kv */
p_key = (char *) leveldb_iter_key(iter, &klen);
log_debug("%p iter key = %s, klen = %ld\n", p_key, p_key, klen);
p_value = (char *) leveldb_iter_value(iter, &vlen);
leveldb_iter_get_error(iter, &err);
if (err) {
goto FAIL_ITER_PARSE;
}
if (!string_match_len(ptn, ptn_len, p_value, vlen, 0)) {
leveldb_iter_next(iter);
continue;
}
/* save parse */
list.count++;/* kv counts */
list.klens += klen;
list.knubs += get_number_len(klen);
index = list.count % SOME_KV_NODES_COUNT;
if ((list.count / SOME_KV_NODES_COUNT >= 1) && (index == 1)) {
/* new store */
p_new = malloc(sizeof(struct some_kv));
if (p_new == NULL ) {
/* free store */
index = GET_NEED_COUNT( list.count, SOME_KV_NODES_COUNT );
p_tmp = &list.head;
for (i = 0, z = list.count - 1; (i < index) && (p_tmp != NULL ); i++ ) {
for (j = 0; (j < SOME_KV_NODES_COUNT) && (z > 0); j++, z--) {
free(p_tmp->nodes[j].key);
}
p_old = p_tmp;
p_tmp = p_tmp->next;
if (p_old != &list.head) {
free(p_old);
}
}
goto FAIL_MEMORY;
}
memset(p_new, 0, sizeof(struct some_kv));
p_old->next = p_new;
p_new->prev = p_old;
p_old = p_new;
}
/*
* fix bug: index is error if list.count = n * SOME_KV_NODES_COUNT(1024),
* SOME_KV_NODES_COUNT = 1024, n > 0.
*/
if (index == 0) {
index = SOME_KV_NODES_COUNT;
}
/* save key */
p_new->nodes[index - 1].klen = klen;
p_new->nodes[index - 1].key = malloc(GET_NEED_COUNT( klen, G_PAGE_SIZE ) * G_PAGE_SIZE);
memcpy(p_new->nodes[index - 1].key, p_key, klen);
/* find next */
leveldb_iter_next(iter);
}
/* create result */
if (list.count > 0) {
/* has members */
/* *2\r\n$5\r\nmykey\r\n$5\r\nmyval\r\n */
*size = strlen("*\r\n") + get_number_len(list.count) + strlen("$\r\n\r\n") * (list.count)
+ list.knubs + list.klens;
index = GET_NEED_COUNT( *size, G_PAGE_SIZE ) * G_PAGE_SIZE;
result = (char *) malloc(index);
if (result == NULL ) goto FAIL_MEMORY;
memset(result, 0, index);
log_debug("----->>>ALL SIZE IS %d, BUFF %p : LEN IS %d\n", *size, result, index);
/* split piece */
index = GET_NEED_COUNT( list.count, SOME_KV_NODES_COUNT );
p_tmp = &list.head;
sprintf(result, "*%d\r\n", list.count);
p_dst = result + strlen(result);
for (i = 0, z = list.count; (i < index) && (p_tmp != NULL ); i++ ) {
for (j = 0; (j < SOME_KV_NODES_COUNT) && (z > 0); j++, z--) {
p_dst = set_bulk(p_dst, p_tmp->nodes[j].key, p_tmp->nodes[j].klen);
free(p_tmp->nodes[j].key);
}
p_old = p_tmp;
p_tmp = p_tmp->next;
if (p_old != &list.head) {
free(p_old);
}
}
} else {
/* no members */
*size = 0;
}
leveldb_iter_destroy(iter_save);
return result;
FAIL_ITER_PARSE: fprintf(stderr, "%s:%d: %s\n", __FILE__, __LINE__, (err));
leveldb_free(err);
err = NULL;
leveldb_iter_destroy(iter);
*size = -1;
return NULL ;
FAIL_MEMORY: fprintf(stderr, "%s:%d: FAILED MALLOC !\n", __FILE__, __LINE__);
leveldb_iter_destroy(iter);
*size = -1;
return NULL ;
}
void
txdb_confirm_one_tx(struct txdb *txdb,
const uint256 *blkHash,
const uint256 *txHash)
{
leveldb_iterator_t *iter;
struct tx_entry *txe;
char bkHashStr[80];
char txHashStr[80];
ASSERT(!uint256_iszero(blkHash));
ASSERT(!uint256_iszero(txHash));
txe = txdb_get_tx_entry(txdb, txHash);
if (txe == NULL) {
return;
}
if (txe->relevant == 0) {
txdb_remove_from_hashtable(txdb, txHash);
NOT_TESTED();
return;
}
if (!uint256_iszero(&txe->blkHash)) {
/*
* It's possible for the ASSERT below to fire if a tx is confirmed in
* a block that is later orphaned. The tx should then be relayed again
* until it finds its way in a new block.
*/
ASSERT(uint256_issame(&txe->blkHash, blkHash));
return;
}
peergroup_stop_broadcast_tx(btc->peerGroup, txHash);
memcpy(&txe->blkHash, blkHash, sizeof *blkHash);
uint256_snprintf_reverse(bkHashStr, sizeof bkHashStr, blkHash);
uint256_snprintf_reverse(txHashStr, sizeof txHashStr, txHash);
Warning(LGPFX" %s confirmed in %s\n", txHashStr, bkHashStr);
NOT_TESTED();
iter = leveldb_create_iterator(txdb->db, txdb->rd_opts);
leveldb_iter_seek_to_first(iter);
while (leveldb_iter_valid(iter)) {
struct tx_ser_key *txkey;
struct tx_ser_data *txdata;
struct buff *buf;
const char *key;
const char *val;
size_t klen;
size_t vlen;
char *err = NULL;
key = leveldb_iter_key(iter, &klen);
txkey = txdb_deserialize_tx_key(key, klen);
if (txkey == NULL || uint256_issame(txHash, &txkey->txHash) == 0) {
free(txkey);
leveldb_iter_next(iter);
continue;
}
NOT_TESTED();
val = leveldb_iter_value(iter, &vlen);
txdata = txdb_deserialize_tx_data(val, vlen);
ASSERT(uint256_iszero(&txdata->blkHash));
ASSERT(txdata->timestamp != 0);
memcpy(&txdata->blkHash, blkHash, sizeof *blkHash);
buf = txdb_serialize_tx_data(txdata);
leveldb_put(txdb->db, txdb->wr_opts, key, klen,
buff_base(buf), buff_curlen(buf), &err);
buff_free(buf);
if (err) {
Warning(LGPFX" failed to write tx entry: %s\n", err);
}
txdb_export_tx_info(txdb);
free(txkey);
free(txdata->buf);
free(txdata);
break;
}
leveldb_iter_destroy(iter);
}
int main(int argc, char** argv) {
leveldb_t* db;
leveldb_comparator_t* cmp;
leveldb_cache_t* cache;
leveldb_env_t* env;
leveldb_options_t* options;
leveldb_readoptions_t* roptions;
leveldb_writeoptions_t* woptions;
char* err = NULL;
int run = -1;
CheckCondition(leveldb_major_version() >= 1);
CheckCondition(leveldb_minor_version() >= 1);
snprintf(dbname, sizeof(dbname),
"%s/leveldb_c_test-%di/meta/0",
GetTempDir(),
((int) geteuid()));
StartPhase("create_objects");
cmp = leveldb_comparator_create(NULL, CmpDestroy, CmpCompare, CmpName);
env = leveldb_create_default_env();
cache = leveldb_cache_create_lru(100000);
options = leveldb_options_create();
leveldb_options_set_comparator(options, cmp);
leveldb_options_set_error_if_exists(options, 1);
leveldb_options_set_cache(options, cache);
leveldb_options_set_env(options, env);
leveldb_options_set_info_log(options, NULL);
leveldb_options_set_write_buffer_size(options, 100000);
leveldb_options_set_paranoid_checks(options, 1);
leveldb_options_set_max_open_files(options, 10);
leveldb_options_set_block_size(options, 1024);
leveldb_options_set_block_restart_interval(options, 8);
leveldb_options_set_compression(options, leveldb_no_compression);
roptions = leveldb_readoptions_create();
leveldb_readoptions_set_verify_checksums(roptions, 1);
leveldb_readoptions_set_fill_cache(roptions, 0);
woptions = leveldb_writeoptions_create();
leveldb_writeoptions_set_sync(woptions, 1);
StartPhase("destroy");
leveldb_destroy_db(options, dbname, &err);
Free(&err);
StartPhase("open");
db = leveldb_open(options, dbname, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", NULL);
StartPhase("put");
leveldb_put(db, woptions, "foo", 3, "hello", 5, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", "hello");
StartPhase("compactall");
leveldb_compact_range(db, NULL, 0, NULL, 0);
CheckGet(db, roptions, "foo", "hello");
StartPhase("compactrange");
leveldb_compact_range(db, "a", 1, "z", 1);
CheckGet(db, roptions, "foo", "hello");
StartPhase("writebatch");
{
leveldb_writebatch_t* wb = leveldb_writebatch_create();
leveldb_writebatch_put(wb, "foo", 3, "a", 1);
leveldb_writebatch_clear(wb);
leveldb_writebatch_put(wb, "bar", 3, "b", 1);
leveldb_writebatch_put(wb, "box", 3, "c", 1);
leveldb_writebatch_delete(wb, "bar", 3);
leveldb_write(db, woptions, wb, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", "hello");
CheckGet(db, roptions, "bar", NULL);
CheckGet(db, roptions, "box", "c");
int pos = 0;
leveldb_writebatch_iterate(wb, &pos, CheckPut, CheckDel);
CheckCondition(pos == 3);
leveldb_writebatch_destroy(wb);
}
StartPhase("iter");
{
leveldb_iterator_t* iter = leveldb_create_iterator(db, roptions);
CheckCondition(!leveldb_iter_valid(iter));
leveldb_iter_seek_to_first(iter);
CheckCondition(leveldb_iter_valid(iter));
CheckIter(iter, "box", "c");
leveldb_iter_next(iter);
CheckIter(iter, "foo", "hello");
leveldb_iter_prev(iter);
CheckIter(iter, "box", "c");
leveldb_iter_prev(iter);
CheckCondition(!leveldb_iter_valid(iter));
leveldb_iter_seek_to_last(iter);
CheckIter(iter, "foo", "hello");
leveldb_iter_seek(iter, "b", 1);
CheckIter(iter, "box", "c");
leveldb_iter_get_error(iter, &err);
CheckNoError(err);
leveldb_iter_destroy(iter);
}
StartPhase("approximate_sizes");
{
int i;
int n = 20000;
char keybuf[100];
char valbuf[100];
uint64_t sizes[2];
const char* start[2] = { "a", "k00000000000000010000" };
size_t start_len[2] = { 1, 21 };
const char* limit[2] = { "k00000000000000010000", "z" };
size_t limit_len[2] = { 21, 1 };
leveldb_writeoptions_set_sync(woptions, 0);
for (i = 0; i < n; i++) {
snprintf(keybuf, sizeof(keybuf), "k%020d", i);
snprintf(valbuf, sizeof(valbuf), "v%020d", i);
leveldb_put(db, woptions, keybuf, strlen(keybuf), valbuf, strlen(valbuf),
&err);
CheckNoError(err);
}
leveldb_approximate_sizes(db, 2, start, start_len, limit, limit_len, sizes);
CheckCondition(sizes[0] > 0);
CheckCondition(sizes[1] > 0);
}
StartPhase("property");
{
char* prop = leveldb_property_value(db, "nosuchprop");
/* CheckCondition(prop == NULL);*/
prop = leveldb_property_value(db, "leveldb.stats");
CheckCondition(prop != NULL);
Free(&prop);
}
StartPhase("snapshot");
{
const leveldb_snapshot_t* snap;
snap = leveldb_create_snapshot(db);
leveldb_delete(db, woptions, "foo", 3, &err);
CheckNoError(err);
leveldb_readoptions_set_snapshot(roptions, snap);
CheckGet(db, roptions, "foo", "hello");
leveldb_readoptions_set_snapshot(roptions, NULL);
CheckGet(db, roptions, "foo", NULL);
leveldb_release_snapshot(db, snap);
}
StartPhase("repair");
{
leveldb_close(db);
leveldb_options_set_error_if_exists(options, 0);
leveldb_repair_db(options, dbname, &err);
CheckNoError(err);
db = leveldb_open(options, dbname, &err);
CheckNoError(err);
CheckGet(db, roptions, "foo", NULL);
CheckGet(db, roptions, "bar", NULL);
CheckGet(db, roptions, "box", "c");
leveldb_options_set_error_if_exists(options, 1);
}
StartPhase("filter");
for (run = 0; run < 2; run++) {
// First run uses custom filter, second run uses bloom filter
CheckNoError(err);
leveldb_filterpolicy_t* policy;
if (run == 0) {
policy = leveldb_filterpolicy_create(
NULL, FilterDestroy, FilterCreate, FilterKeyMatch, FilterName);
} else {
policy = leveldb_filterpolicy_create_bloom(10);
}
// Create new database
leveldb_close(db);
leveldb_destroy_db(options, dbname, &err);
leveldb_options_set_filter_policy(options, policy);
db = leveldb_open(options, dbname, &err);
CheckNoError(err);
leveldb_put(db, woptions, "foo", 3, "foovalue", 8, &err);
CheckNoError(err);
leveldb_put(db, woptions, "bar", 3, "barvalue", 8, &err);
CheckNoError(err);
leveldb_compact_range(db, NULL, 0, NULL, 0);
fake_filter_result = 1;
CheckGet(db, roptions, "foo", "foovalue");
CheckGet(db, roptions, "bar", "barvalue");
if (phase == 0) {
// Must not find value when custom filter returns false
fake_filter_result = 0;
CheckGet(db, roptions, "foo", NULL);
CheckGet(db, roptions, "bar", NULL);
fake_filter_result = 1;
CheckGet(db, roptions, "foo", "foovalue");
CheckGet(db, roptions, "bar", "barvalue");
}
leveldb_options_set_filter_policy(options, NULL);
leveldb_filterpolicy_destroy(policy);
}
StartPhase("cleanup");
leveldb_close(db);
leveldb_options_destroy(options);
leveldb_readoptions_destroy(roptions);
leveldb_writeoptions_destroy(woptions);
leveldb_cache_destroy(cache);
leveldb_comparator_destroy(cmp);
leveldb_env_destroy(env);
fprintf(stderr, "PASS\n");
return 0;
}
int mdhim_leveldb_get_prev(void *dbh, void **key, int *key_len,
void **data, int32_t *data_len,
struct mdhim_store_opts_t *mstore_opts) {
leveldb_readoptions_t *options;
leveldb_t *db = (leveldb_t *) dbh;
int ret = MDHIM_SUCCESS;
leveldb_iterator_t *iter;
const char *res;
int len = 0;
void *old_key;
int old_key_len;
struct timeval start, end;
//Init the data to return
*data = NULL;
*data_len = 0;
gettimeofday(&start, NULL);
//Create the options and iterator
options = (leveldb_readoptions_t *) mstore_opts->db_ptr3;
old_key = *key;
old_key_len = *key_len;
*key = NULL;
*key_len = 0;
iter = leveldb_create_iterator(db, options);
//If the user didn't supply a key, then seek to the last
if (!old_key || old_key_len == 0) {
leveldb_iter_seek_to_last(iter);
} else {
leveldb_iter_seek(iter, old_key, old_key_len);
if (!leveldb_iter_valid(iter)) {
mlog(MDHIM_SERVER_DBG2, "Could not get a valid iterator in leveldb");
goto error;
}
leveldb_iter_prev(iter);
}
if (!leveldb_iter_valid(iter)) {
goto error;
}
res = leveldb_iter_value(iter, (size_t *) &len);
if (res) {
*data = malloc(len);
memcpy(*data, res, len);
*data_len = len;
} else {
*data = NULL;
*data_len = 0;
}
res = leveldb_iter_key(iter, (size_t *) key_len);
if (res) {
*key = malloc(*key_len);
memcpy(*key, res, *key_len);
} else {
*key = NULL;
*key_len = 0;
}
if (!*data) {
goto error;
}
//Destroy iterator
leveldb_iter_destroy(iter);
gettimeofday(&end, NULL);
mlog(MDHIM_SERVER_DBG, "Took: %d seconds to get the prev record",
(int) (end.tv_sec - start.tv_sec));
return ret;
error:
//Destroy iterator
leveldb_iter_destroy(iter);
*key = NULL;
*key_len = 0;
*data = NULL;
*data_len = 0;
return MDHIM_DB_ERROR;
}
