inline int ldb_delete(struct _leveldb_stuff *ldbs, const char *key, size_t klen)
{
char* err = NULL;
char *val = NULL;
size_t vlen = 0;
val = leveldb_get(ldbs->db, ldbs->roptions, key, klen, (size_t *) &vlen, &err);
if (err) {
fprintf(stderr, "%s\n", err);
leveldb_free(err);
err = NULL;
return -1;
}
leveldb_free(val);
/* if not found, then return 0. */
if (vlen == 0) {
return 0;
}
/* if found, delete it, then return 1. */
leveldb_delete(ldbs->db, ldbs->woptions, key, klen, &err);
if (err) {
fprintf(stderr, "%s\n", err);
leveldb_free(err);
err = NULL;
return -1;
}
return 1;
}
int stat_cache_updated_children(stat_cache_t *cache, const char *path, time_t timestamp) {
leveldb_writeoptions_t *options;
char *key = NULL;
char *errptr = NULL;
int r = 0;
asprintf(&key, "updated_children:%s", path);
options = leveldb_writeoptions_create();
if (timestamp == 0)
leveldb_delete(cache, options, key, strlen(key) + 1, &errptr);
else
leveldb_put(cache, options, key, strlen(key) + 1, (char *) ×tamp, sizeof(time_t), &errptr);
leveldb_writeoptions_destroy(options);
free(key);
if (errptr != NULL) {
log_print(LOG_ERR, "leveldb_set error: %s", errptr);
free(errptr);
r = -1;
}
return r;
}
void store_delete(leveldb_t * store, char * key, size_t key_size){
char * err=0x00;
leveldb_writeoptions_t *write_options=leveldb_writeoptions_create();
leveldb_delete(store, write_options, key, key_size, &err);
leveldb_writeoptions_destroy(write_options);
if(err){
fprintf(stderr, "error: %s\n", err);
free(err);
}
}
void
db_del(db_t *db, const char *key,
size_t klen, char **errptr) {
leveldb_writeoptions_t *opts;
opts = leveldb_writeoptions_create();
/* sync=true flushed buffer */
leveldb_writeoptions_set_sync(opts, 1);
leveldb_delete(db->db, opts, key, klen, errptr);
}
int kvdb_leveldb_del(kvdb_t *kvdb, void *key, uint32_t klen)
{
kvdb_leveldb_t *leveldb = (kvdb_leveldb_t*)kvdb;
char *szErr = NULL;
leveldb_delete(leveldb->db, leveldb->pWriteOpt, (const char*)key, klen, &szErr);
if ( szErr ) {
return -1;
} else {
return 0;
}
}
int xleveldb_del(struct db_conn *db, const unsigned char *key, size_t ksize)
{
leveldb_writeoptions_t *options = leveldb_writeoptions_create();
char *err, *origerr;
err = origerr = malloc(1);
leveldb_delete(db->conn, options,
(const char *) key, ksize, &err);
free(err);
leveldb_writeoptions_destroy(options);
return err == origerr;
}
/**
* mdhim_leveldb_del
* delete the given key
*
* @param dbh in pointer to the leveldb db handle
* @param key in void * for the key to delete
* @param key_len in int for the length of the key
* @param mstore_opts in additional options for the data store layer
*
* @return MDHIM_SUCCESS on success or MDHIM_DB_ERROR on failure
*/
int mdhim_leveldb_del(void *dbh, void *key, int key_len,
struct mdhim_store_opts_t *mstore_opts) {
leveldb_writeoptions_t *options;
char *err = NULL;
leveldb_t *db = (leveldb_t *) dbh;
options = (leveldb_writeoptions_t *) mstore_opts->db_ptr4;
leveldb_delete(db, options, key, key_len, &err);
if (err != NULL) {
mlog(MDHIM_SERVER_CRIT, "Error deleting key in leveldb");
return MDHIM_DB_ERROR;
}
return MDHIM_SUCCESS;
}
void delCommand(redisClient *c) {
int i;
char *key;
char *err = NULL;
int deleted = 0;
for (i = 1; i < c->argc; i++) {
key = (char *) c->argv[i]->ptr;
leveldb_delete(server.ds_db, server.woptions,
key, sdslen((sds) key), &err);
if (err != NULL) {
leveldb_free(err);
continue;
}
signalModifiedKey(c->db, c->argv[i]);
server.dirty++;
deleted++;
}
addReplyLongLong(c, deleted);
return;
}
int stat_cache_delete(stat_cache_t *cache, const char *path) {
leveldb_writeoptions_t *options;
char *key;
int r = 0;
char *errptr = NULL;
key = path2key(path, false);
log_print(LOG_DEBUG, "stat_cache_delete: %s", key);
options = leveldb_writeoptions_create();
leveldb_delete(cache, options, key, strlen(key) + 1, &errptr);
leveldb_writeoptions_destroy(options);
free(key);
if (errptr != NULL) {
log_print(LOG_ERR, "leveldb_delete error: %s", errptr);
free(errptr);
r = -1;
}
return r;
}
int leveldb_client_delete(leveldb *db, const char *key)
{
char *err = NULL;
size_t keylen;
if (!db || !key){
kp_error("got a NULL arguement\n");
return -1;
}
keylen = strlen(key);
if (keylen < 1 )
kp_error("got empty string for key (%zu)\n", keylen);
kp_debug("deleting{%s} from db [%s]; keylen=%zu\n", key, db->name, keylen);
leveldb_delete(db->db, db->woptions, key, keylen, &err);
if (err){
kp_error("leveldb_delete() returned error: %s\n", err);
free_err(&err);
return -1;
}
kp_debug("leveledb_delete() succeeded\n");
return 0;
}
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 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;
}
void db_delete(db_t *db, const db_writeoptions_t *wo, const char *key, size_t klen, char **errptr) {
leveldb_delete(db, wo, key, klen, errptr);
}
void db_leveldb_delete(dbi_t *key)
{
leveldb_delete(leveldb_db, leveldb_woptions, key->data, key->len, NULL);
}