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295 行
8.6 KiB
295 行
8.6 KiB
/* Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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Use of this source code is governed by a BSD-style license that can be
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found in the LICENSE file. See the AUTHORS file for names of contributors. */
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#include "leveldb/c.h"
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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const char* phase = "";
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static char dbname[200];
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static void StartPhase(const char* name) {
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fprintf(stderr, "=== Test %s\n", name);
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phase = name;
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}
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#define CheckNoError(err) \
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if ((err) != NULL) { \
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fprintf(stderr, "%s:%d: %s: %s\n", __FILE__, __LINE__, phase, (err)); \
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abort(); \
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}
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#define CheckCondition(cond) \
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if (!(cond)) { \
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fprintf(stderr, "%s:%d: %s: %s\n", __FILE__, __LINE__, phase, #cond); \
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abort(); \
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}
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static void CheckEqual(const char* expected, const char* v, size_t n) {
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if (expected == NULL && v == NULL) {
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// ok
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} else if (expected != NULL && v != NULL && n == strlen(expected) &&
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memcmp(expected, v, n) == 0) {
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// ok
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return;
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} else {
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fprintf(stderr, "%s: expected '%s', got '%s'\n",
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phase,
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(expected ? expected : "(null)"),
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(v ? v : "(null"));
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abort();
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}
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}
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static void Free(char** ptr) {
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if (*ptr) {
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free(*ptr);
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*ptr = NULL;
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}
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}
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static void CheckGet(
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leveldb_t* db,
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const leveldb_readoptions_t* options,
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const char* key,
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const char* expected) {
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char* err = NULL;
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size_t val_len;
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char* val;
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val = leveldb_get(db, options, key, strlen(key), &val_len, &err);
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CheckNoError(err);
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CheckEqual(expected, val, val_len);
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Free(&val);
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}
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static void CheckIter(leveldb_iterator_t* iter,
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const char* key, const char* val) {
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size_t len;
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const char* str;
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str = leveldb_iter_key(iter, &len);
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CheckEqual(key, str, len);
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str = leveldb_iter_value(iter, &len);
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CheckEqual(val, str, len);
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}
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// Callback from leveldb_writebatch_iterate()
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static void CheckPut(void* ptr,
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const char* k, size_t klen,
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const char* v, size_t vlen) {
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int* state = (int*) ptr;
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CheckCondition(*state < 2);
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switch (*state) {
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case 0:
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CheckEqual("bar", k, klen);
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CheckEqual("b", v, vlen);
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break;
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case 1:
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CheckEqual("box", k, klen);
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CheckEqual("c", v, vlen);
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break;
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}
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(*state)++;
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}
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// Callback from leveldb_writebatch_iterate()
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static void CheckDel(void* ptr, const char* k, size_t klen) {
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int* state = (int*) ptr;
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CheckCondition(*state == 2);
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CheckEqual("bar", k, klen);
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(*state)++;
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}
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static void CmpDestroy(void* arg) { }
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static int CmpCompare(void* arg, const char* a, size_t alen,
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const char* b, size_t blen) {
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int n = (alen < blen) ? alen : blen;
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int r = memcmp(a, b, n);
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if (r == 0) {
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if (alen < blen) r = -1;
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else if (alen > blen) r = +1;
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}
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return r;
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}
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static const char* CmpName(void* arg) {
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return "foo";
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}
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int main(int argc, char** argv) {
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leveldb_t* db;
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leveldb_comparator_t* cmp;
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leveldb_cache_t* cache;
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leveldb_env_t* env;
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leveldb_options_t* options;
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leveldb_readoptions_t* roptions;
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leveldb_writeoptions_t* woptions;
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char* err = NULL;
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snprintf(dbname, sizeof(dbname), "/tmp/leveldb_c_test-%d",
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((int) geteuid()));
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StartPhase("create_objects");
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cmp = leveldb_comparator_create(NULL, CmpDestroy, CmpCompare, CmpName);
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env = leveldb_create_default_env();
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cache = leveldb_cache_create_lru(100000);
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options = leveldb_options_create();
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leveldb_options_set_comparator(options, cmp);
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leveldb_options_set_error_if_exists(options, 1);
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leveldb_options_set_cache(options, cache);
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leveldb_options_set_env(options, env);
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leveldb_options_set_info_log(options, NULL);
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leveldb_options_set_write_buffer_size(options, 100000);
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leveldb_options_set_paranoid_checks(options, 1);
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leveldb_options_set_max_open_files(options, 10);
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leveldb_options_set_block_size(options, 1024);
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leveldb_options_set_block_restart_interval(options, 8);
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leveldb_options_set_compression(options, leveldb_no_compression);
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roptions = leveldb_readoptions_create();
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leveldb_readoptions_set_verify_checksums(roptions, 1);
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leveldb_readoptions_set_fill_cache(roptions, 0);
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woptions = leveldb_writeoptions_create();
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leveldb_writeoptions_set_sync(woptions, 1);
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StartPhase("destroy");
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leveldb_destroy_db(options, dbname, &err);
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Free(&err);
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StartPhase("open_error");
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db = leveldb_open(options, dbname, &err);
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CheckCondition(err != NULL);
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Free(&err);
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StartPhase("open");
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leveldb_options_set_create_if_missing(options, 1);
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db = leveldb_open(options, dbname, &err);
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CheckNoError(err);
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CheckGet(db, roptions, "foo", NULL);
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StartPhase("put");
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leveldb_put(db, woptions, "foo", 3, "hello", 5, &err);
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CheckNoError(err);
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CheckGet(db, roptions, "foo", "hello");
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StartPhase("writebatch");
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{
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leveldb_writebatch_t* wb = leveldb_writebatch_create();
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leveldb_writebatch_put(wb, "foo", 3, "a", 1);
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leveldb_writebatch_clear(wb);
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leveldb_writebatch_put(wb, "bar", 3, "b", 1);
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leveldb_writebatch_put(wb, "box", 3, "c", 1);
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leveldb_writebatch_delete(wb, "bar", 3);
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leveldb_write(db, woptions, wb, &err);
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CheckNoError(err);
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CheckGet(db, roptions, "foo", "hello");
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CheckGet(db, roptions, "bar", NULL);
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CheckGet(db, roptions, "box", "c");
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int pos = 0;
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leveldb_writebatch_iterate(wb, &pos, CheckPut, CheckDel);
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CheckCondition(pos == 3);
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leveldb_writebatch_destroy(wb);
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}
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StartPhase("iter");
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{
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leveldb_iterator_t* iter = leveldb_create_iterator(db, roptions);
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CheckCondition(!leveldb_iter_valid(iter));
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leveldb_iter_seek_to_first(iter);
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CheckCondition(leveldb_iter_valid(iter));
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CheckIter(iter, "box", "c");
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leveldb_iter_next(iter);
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CheckIter(iter, "foo", "hello");
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leveldb_iter_prev(iter);
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CheckIter(iter, "box", "c");
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leveldb_iter_prev(iter);
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CheckCondition(!leveldb_iter_valid(iter));
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leveldb_iter_seek_to_last(iter);
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CheckIter(iter, "foo", "hello");
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leveldb_iter_seek(iter, "b", 1);
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CheckIter(iter, "box", "c");
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leveldb_iter_get_error(iter, &err);
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CheckNoError(err);
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leveldb_iter_destroy(iter);
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}
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StartPhase("approximate_sizes");
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{
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int i;
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int n = 20000;
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char keybuf[100];
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char valbuf[100];
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uint64_t sizes[2];
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const char* start[2] = { "a", "k00000000000000010000" };
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size_t start_len[2] = { 1, 21 };
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const char* limit[2] = { "k00000000000000010000", "z" };
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size_t limit_len[2] = { 21, 1 };
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leveldb_writeoptions_set_sync(woptions, 0);
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for (i = 0; i < n; i++) {
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snprintf(keybuf, sizeof(keybuf), "k%020d", i);
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snprintf(valbuf, sizeof(valbuf), "v%020d", i);
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leveldb_put(db, woptions, keybuf, strlen(keybuf), valbuf, strlen(valbuf),
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&err);
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CheckNoError(err);
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}
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leveldb_approximate_sizes(db, 2, start, start_len, limit, limit_len, sizes);
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CheckCondition(sizes[0] > 0);
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CheckCondition(sizes[1] > 0);
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}
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StartPhase("property");
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{
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char* prop = leveldb_property_value(db, "nosuchprop");
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CheckCondition(prop == NULL);
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prop = leveldb_property_value(db, "leveldb.stats");
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CheckCondition(prop != NULL);
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Free(&prop);
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}
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StartPhase("snapshot");
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{
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const leveldb_snapshot_t* snap;
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snap = leveldb_create_snapshot(db);
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leveldb_delete(db, woptions, "foo", 3, &err);
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CheckNoError(err);
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leveldb_readoptions_set_snapshot(roptions, snap);
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CheckGet(db, roptions, "foo", "hello");
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leveldb_readoptions_set_snapshot(roptions, NULL);
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CheckGet(db, roptions, "foo", NULL);
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leveldb_release_snapshot(db, snap);
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}
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StartPhase("repair");
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{
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leveldb_close(db);
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leveldb_options_set_create_if_missing(options, 0);
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leveldb_options_set_error_if_exists(options, 0);
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leveldb_repair_db(options, dbname, &err);
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CheckNoError(err);
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db = leveldb_open(options, dbname, &err);
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CheckNoError(err);
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CheckGet(db, roptions, "foo", NULL);
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CheckGet(db, roptions, "bar", NULL);
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CheckGet(db, roptions, "box", "c");
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}
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StartPhase("cleanup");
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leveldb_close(db);
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leveldb_options_destroy(options);
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leveldb_readoptions_destroy(roptions);
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leveldb_writeoptions_destroy(woptions);
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leveldb_cache_destroy(cache);
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leveldb_comparator_destroy(cmp);
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leveldb_env_destroy(env);
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fprintf(stderr, "PASS\n");
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return 0;
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}
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