// Opens the tablet for reading and writing. This should be called directly.
// Only the owning table should open a tablet.
//
// tablet - The tablet.
//
// Returns 0 if successful, otherwise returns -1.
int sky_tablet_open(sky_tablet *tablet)
{
char* errptr = NULL;
leveldb_options_t* options = NULL;
assert(tablet != NULL);
check(tablet->path != NULL, "Tablet path required");
// Close the tablet if it's already open.
sky_tablet_close(tablet);
// Initialize data file.
options = leveldb_options_create();
leveldb_options_set_create_if_missing(options, true);
tablet->leveldb_db = leveldb_open(options, bdata(tablet->path), &errptr);
check(errptr == NULL, "LevelDB Error: %s", errptr);
check(tablet->leveldb_db != NULL, "Unable to create LevelDB data file");
leveldb_options_destroy(options);
return 0;
error:
if(errptr) leveldb_free(errptr);
if(options) leveldb_options_destroy(options);
sky_tablet_close(tablet);
return -1;
}
struct db_conn *xleveldb_open(const char *name, int flags)
{
struct db_conn *db;
leveldb_options_t *options;
leveldb_t *level_db;
options = leveldb_options_create();
if (options == NULL)
return NULL;
leveldb_options_set_create_if_missing(options, 1);
level_db = leveldb_open(options, name, NULL);
leveldb_options_destroy(options);
if (level_db == NULL)
return NULL;
db = malloc(sizeof(struct db_conn));
if (db == NULL) {
leveldb_close(level_db);
return NULL;
}
db->conn = level_db;
db->set = xleveldb_set;
db->get = xleveldb_get;
db->del = xleveldb_del;
db->firstkey = xleveldb_firstkey;
db->nextkey = xleveldb_nextkey;
db->close = xleveldb_close;
return db;
}
int leveldb_client_stop(leveldb *db)
{
int retval = 0;
#if DELETE_DB_FROM_DISK
char *err = NULL;
#endif
kp_debug("stopping db [%s]\n", db->name);
leveldb_close(db->db);
#if DELETE_DB_FROM_DISK
leveldb_destroy_db(db->options, db->name, &err); //destroy db on disk
if (err) {
kp_error("leveldb_destroy_db() returned error: %s\n", err);
retval = -1;
}
free_err(&err);
#endif
leveldb_options_destroy(db->options);
leveldb_readoptions_destroy(db->roptions);
leveldb_writeoptions_destroy(db->woptions);
leveldb_cache_destroy(db->cache);
leveldb_comparator_destroy(db->cmp);
leveldb_env_destroy(db->env);
free(db->name);
free(db);
kp_debug("freed the leveldb, returning %d\n", retval);
return retval;
}
int
txdb_zap(struct config *config)
{
leveldb_options_t *options;
char *err = NULL;
char *path;
int res;
path = txdb_get_db_path(config);
res = file_exists(path);
if (res == 0) {
goto exit;
}
Warning(LGPFX" destroying txdb @ '%s'\n", path);
options = leveldb_options_create();
leveldb_options_set_info_log(options, NULL);
leveldb_destroy_db(options, path, &err);
leveldb_options_destroy(options);
if (err) {
Warning(LGPFX" failed to destroy DB %s: %s\n", path, err);
free(err);
res = 1;
}
exit:
free(path);
return res;
}
/*
* Close the ldb.
*/
void ldb_close(struct _leveldb_stuff *ldbs)
{
leveldb_close(ldbs->db);
leveldb_options_destroy(ldbs->options);
leveldb_readoptions_destroy(ldbs->roptions);
leveldb_writeoptions_destroy(ldbs->woptions);
leveldb_writebatch_destroy(ldbs->wbatch);
}
void ds_close() {
leveldb_close(server.ds_db);
leveldb_readoptions_destroy(server.roptions);
leveldb_writeoptions_destroy(server.woptions);
leveldb_options_set_filter_policy(server.ds_options, NULL);
leveldb_filterpolicy_destroy(server.policy);
leveldb_options_destroy(server.ds_options);
leveldb_cache_destroy(server.ds_cache);
}
void db_leveldb_close()
{
leveldb_close(leveldb_db);
leveldb_cache_destroy(leveldb_cache);
leveldb_filterpolicy_destroy(leveldb_filterpolicy);
leveldb_options_destroy(leveldb_options);
leveldb_readoptions_destroy(leveldb_roptions);
leveldb_writeoptions_destroy(leveldb_woptions);
}
void kvdb_leveldb_close(kvdb_t *kvdb){
kvdb_leveldb_t *leveldb = (kvdb_leveldb_t*)kvdb;
leveldb_close(leveldb->db);
leveldb_writeoptions_destroy(leveldb->pWriteOpt);
leveldb_readoptions_destroy(leveldb->pReadOpt);
leveldb_options_destroy(leveldb->pOpt);
zfree(kvdb);
}
int stat_cache_close(stat_cache_t *cache, struct stat_cache_supplemental supplemental) {
if (cache != NULL)
leveldb_close(cache);
if (supplemental.options != NULL) {
leveldb_options_destroy(supplemental.options);
log_print(LOG_DEBUG, "leveldb_options_destroy");
}
if (supplemental.lru != NULL)
leveldb_cache_destroy(supplemental.lru);
return 0;
}
/**
* mdhim_leveldb_close
* Closes the data store
*
* @param dbh in pointer to the leveldb db handle
* @param dbs in pointer to the leveldb statistics db handle
* @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_close(void *dbh, void *dbs, struct mdhim_store_opts_t *mstore_opts) {
leveldb_t *db = (leveldb_t *) dbh;
leveldb_t *db_s = (leveldb_t *) dbs;
//Close the databases
leveldb_close(db);
leveldb_close(db_s);
//Destroy the options
leveldb_comparator_destroy((leveldb_comparator_t *) mstore_opts->db_ptr1);
leveldb_options_destroy((leveldb_options_t *) mstore_opts->db_ptr2);
leveldb_readoptions_destroy((leveldb_readoptions_t *) mstore_opts->db_ptr3);
leveldb_writeoptions_destroy((leveldb_writeoptions_t *) mstore_opts->db_ptr4);
leveldb_options_destroy((leveldb_options_t *) mstore_opts->db_ptr5);
leveldb_readoptions_destroy((leveldb_readoptions_t *) mstore_opts->db_ptr6);
leveldb_writeoptions_destroy((leveldb_writeoptions_t *) mstore_opts->db_ptr7);
leveldb_filterpolicy_destroy((leveldb_filterpolicy_t *) mstore_opts->db_ptr8);
leveldb_filterpolicy_destroy((leveldb_filterpolicy_t *) mstore_opts->db_ptr9);
// leveldb_cache_destroy((leveldb_cache_t *) mstore_opts->db_ptr10);
//leveldb_cache_destroy((leveldb_cache_t *) mstore_opts->db_ptr11);
return MDHIM_SUCCESS;
}
/*
* Destroy the ldb.
*/
void ldb_destroy(struct _leveldb_stuff *ldbs)
{
char* err = NULL;
leveldb_close(ldbs->db);
leveldb_destroy_db(ldbs->options, ldbs->dbname, &err);
if (err) {
fprintf(stderr, "%s\n", err);
leveldb_free(err);
err = NULL;
}
leveldb_options_destroy(ldbs->options);
leveldb_readoptions_destroy(ldbs->roptions);
leveldb_writeoptions_destroy(ldbs->woptions);
leveldb_writebatch_destroy(ldbs->wbatch);
free(ldbs);
}
db_t *
db_open(const char *path, char **errptr) {
db_t *out;
leveldb_options_t *opts;
leveldb_t *db;
opts = leveldb_options_create();
leveldb_options_set_create_if_missing(opts, 1);
db = leveldb_open(opts, path, errptr);
if (*errptr) {
leveldb_options_destroy(opts);
return NULL;
}
out = malloc(sizeof(db_t));
*out = (db_t){ .db=db, .opts=opts };
return out;
}
void
txdb_close(struct txdb *txdb)
{
if (txdb == NULL) {
return;
}
if (txdb->db) {
leveldb_close(txdb->db);
}
leveldb_options_destroy(txdb->db_opts);
leveldb_readoptions_destroy(txdb->rd_opts);
leveldb_writeoptions_destroy(txdb->wr_opts);
hashtable_clear_with_callback(txdb->hash_txo, txdb_hashtable_free_txo_entry);
hashtable_destroy(txdb->hash_txo);
hashtable_clear_with_callback(txdb->hash_tx, txdb_hashtable_free_tx_entry);
hashtable_destroy(txdb->hash_tx);
free(txdb->path);
memset(txdb, 0, sizeof *txdb);
free(txdb);
}
int main(int argc, char **argv) {
int goopt;
int listenport=8080;
int numthreads=10;
int tf;
char *dbd=NULL;
char *lpstr=NULL;
char *ntstr=NULL;
char *alfile=NULL;
leveldb_options_t *dbopt;
struct mg_context *ctx= NULL;
char **mgoptions;
signal(SIGINT,handlesig);
signal(SIGTERM,handlesig);
// command line parsing
while ((goopt=getopt (argc, argv, "d:p:n:a:t:vh")) != -1) {
switch (goopt) {
case 'd': // database
dbd=calloc(strlen((char*)optarg)+1,sizeof(char));
strncpy(dbd,(char*)optarg,strlen((char*)optarg));
break;
case 'a': // access log, passed to mongoose
alfile=calloc(strlen((char*)optarg)+1,sizeof(char));
strncpy(alfile,(char*)optarg,strlen((char*)optarg));
break;
case 'p': // port
listenport=atoi(optarg);
break;
case 'n': // number of threads
numthreads=atoi(optarg);
break;
case 'v': // verbose
vlevel++;
break;
case 'h': // help
usage(NULL,EXIT_SUCCESS);
break;
default: // fallthrough
usage(NULL,EXIT_FAILURE);
}
}
LOG_TRACE(vlevel, _("Validation\n"),dbd);
if(dbd==NULL) {
usage("Must give a database dir\n",EXIT_FAILURE);
} else {
LOG_TRACE(vlevel, _("Using database dir: %s\n"),dbd);
}
if(alfile!=NULL) {
if((tf=open(alfile,O_WRONLY|O_CREAT,S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH))==-1) {
LOG_FATAL(vlevel,_("Unable to open access log file: %s: %s\n"), alfile, strerror(errno));
exit(EXIT_FAILURE);
}
close(tf);
}
if(alfile!=NULL && access(alfile, W_OK)!=0) {
LOG_FATAL(vlevel, _("Unable to write to access log file: %s\n"),alfile);
exit(EXIT_FAILURE);
}
if(listenport<0 || listenport>65536) {
LOG_FATAL(vlevel, _("Given port out of bounds: %i\n"),listenport);
exit(EXIT_FAILURE);
}
if(numthreads<0 || numthreads>1024) {
LOG_FATAL(vlevel, _("Given threads out of bounds: %i\n"),numthreads);
exit(EXIT_FAILURE);
}
LOG_TRACE(vlevel, _("Setting up leveldb store in %s\n"),dbd);
dbopt=leveldb_options_create();
leveldb_options_set_create_if_missing(dbopt, 1);
leveldb_options_set_write_buffer_size(dbopt, 8388608);
leveldb_options_set_compression(dbopt,leveldb_no_compression);
dbh=leveldb_open(dbopt,dbd,&errptr);
LOG_TRACE(vlevel, _("Setting leveldb read options\n"));
ropt = leveldb_readoptions_create();
leveldb_readoptions_set_verify_checksums(ropt, 1);
leveldb_readoptions_set_fill_cache(ropt, 0);
LOG_TRACE(vlevel, _("Setting leveldb write options\n"));
wopt = leveldb_writeoptions_create();
leveldb_writeoptions_set_sync(wopt, 0);
// set mgoptions - XXX this needs to be handled better
lpstr=calloc(7,sizeof(char));
snprintf(lpstr,6,"%i",listenport);
ntstr=calloc(4,sizeof(char));
snprintf(ntstr,3,"%i",numthreads);
if(alfile!=NULL) {
mgoptions = calloc(9,sizeof(char*));
} else {
mgoptions = calloc(7,sizeof(char*));
}
mgoptions[0]="listening_ports";
mgoptions[1]=lpstr;
mgoptions[2]="document_root";
mgoptions[3]="/dev/null";
mgoptions[4]="num_threads";
mgoptions[5]=ntstr;
if(alfile!=NULL) {
mgoptions[6]="access_log_file";
mgoptions[7]=alfile;
mgoptions[8]=NULL;
} else {
mgoptions[6]=NULL;
}
// main loop
LOG_INFO(vlevel, _("Starting Mongoose HTTP server loop\n"));
ctx = mg_start(&mghandle, NULL, (const char**)mgoptions);
if(ctx!=NULL) {
while(!done) {
// cleaner thread here?
sleep(1);
}
LOG_INFO(vlevel, _("Ending Mongoose HTTP server loop\n"));
mg_stop(ctx);
} else {
LOG_FATAL(vlevel,_("Error in creating Mongoose HTTP server\n"));
}
LOG_TRACE(vlevel, _("Closing database handle\n"));
// close leveldb handle
LOG_TRACE(vlevel, _("Cleaning up leveldb\n"));
leveldb_compact_range(dbh, NULL, 0, NULL, 0);
leveldb_options_destroy(dbopt);
leveldb_readoptions_destroy(ropt);
leveldb_writeoptions_destroy(wopt);
leveldb_close(dbh);
LOG_TRACE(vlevel, _("Cleaning up\n"));
free(dbd);
free(lpstr);
free(ntstr);
free(mgoptions);
return EXIT_SUCCESS;
}
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_close()
{
leveldb_close(ldb);
leveldb_options_destroy(ldb_options);
leveldb_cache_destroy(ldb_cache);
}
void
db_close(db_t *db) {
leveldb_options_destroy(db->opts);
leveldb_close(db->db);
free(db);
}
void db_options_destroy(db_options_t **optr) {
leveldb_options_destroy(*optr);
*optr = NULL;
}
int
main(int argc, char *argv[]) {
if (argc != 5) {
fprintf(stderr, "Usage: ./leveldb_index [leveldb_directory] [sample_input] [index_output] [index_time_file]\n");
return -1;
}
if ((file = fopen(argv[2], "r")) == NULL) {
fprintf(stderr, "Failed to open sample file \"%s\" for reading\n", argv[1]);
return -1;
}
for (i = 0; fscanf(file, "%"PRId64"\t", &cnt) != EOF; ++i) {
fgets(buffer, BUFFER_SIZE, file);
for (len = strlen(buffer) - 1; len >= 0 && (buffer[len] == '\r' || buffer[len] == '\n'); buffer[len--] = 0);
++len;
strcpy(request[i].key, buffer);
}
fclose(file);
if ((file = fopen(argv[4], "w")) == NULL) {
fprintf(stderr, "Failed to open time information file \"%s\" for reading\n", argv[4]);
return -1;
}
fprintf(stdout, "Start indexing\n");
srand((unsigned)time(NULL));
options = leveldb_options_create();
leveldb_options_set_create_if_missing(options, 1);
// default: write_buffer_size: 4MB, block_cache: 8MB, block_size ~ 4KB
leveldb_options_set_write_buffer_size(options, BLK_SIZE * 1024);
leveldb_options_set_cache(options, cache = leveldb_cache_create_lru(BLK_SIZE * 2048));
leveldb_options_set_block_size(options, BLK_SIZE);
leveldb_options_set_compression(options, 0);
db = leveldb_open(options, argv[1], &err);
if (err != NULL) {
fprintf(stderr, "Failed to open leveldb.\n");
return -1;
}
leveldb_free(err);
roptions = leveldb_readoptions_create();
gettimeofday(&start, NULL);
for (i = seekn = tot = 0; i < DISK_INDEX_SIZE; ++i) {
val = leveldb_get(db, roptions, request[i].key, strlen(request[i].key), &read_len, &err);
if (err != NULL) {
fprintf(stderr, "Failed to read from leveldb.\n");
return -1;
}
leveldb_free(err);
if (read_len == 0)
request[i].value = 0;
else {
val[read_len] = 0;
sscanf(val, "%"PRId64"", &request[i].value);
}
leveldb_free(val);
if ((i + 1) % 1000 == 0) {
gettimeofday(&end, NULL);
tot += (int64_t)(end.tv_sec - start.tv_sec) * 1000000 + end.tv_usec - start.tv_usec;
fprintf(stdout, "\rIndexed %"PRId64" items in %"PRId64"us", i + 1, tot);
fflush(stdout);
fprintf(file, "Indexed %"PRId64" items in %"PRId64"us\n", i + 1, tot);
fflush(file);
gettimeofday(&start, NULL);
}
}
fprintf(stdout, "\rIndexed %"PRId64" items in %"PRId64"us\n", i, tot);
fprintf(file, "Indexed %"PRId64" items in %"PRId64"us\n", i, tot);
fflush(file);
fclose(file);
leveldb_cache_destroy(cache);
leveldb_readoptions_destroy(roptions);
leveldb_options_destroy(options);
leveldb_close(db);
fprintf(stdout, "Used %"PRId64" us and seeked %"PRId64" times to index %"PRId64" keys\n", tot, seekn, i);
if ((file = fopen(argv[3], "w")) == NULL) {
fprintf(stdout, "Failed to open file \"%s\" for storing indexing results\n", argv[3]);
return -1;
}
for (i = 0; i < DISK_INDEX_SIZE; ++i)
fprintf(file, "%"PRId64"\t%s\n", request[i].value, request[i].key);
fflush(file);
fclose(file);
return 0;
}