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/*-
* Public Domain 2014-present MongoDB, Inc.
* Public Domain 2008-2014 WiredTiger, Inc.
*
* This is free and unencumbered software released into the public domain.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a compiled
* binary, for any purpose, commercial or non-commercial, and by any
* means.
*
* In jurisdictions that recognize copyright laws, the author or authors
* of this software dedicate any and all copyright interest in the
* software to the public domain. We make this dedication for the benefit
* of the public at large and to the detriment of our heirs and
* successors. We intend this dedication to be an overt act of
* relinquishment in perpetuity of all present and future rights to this
* software under copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "test_util.h"
static const char name[] = "lsm:test";
#define NUM_DOCS 100000
#define NUM_QUERIES (NUM_DOCS / 100)
static void
rand_str(uint64_t i, char *str)
{
uint64_t x, y;
y = strlen(str);
for (x = y; x > y - 8; x--) {
str[x - 1] = (char)(i % 10) + 48;
i = i / 10;
}
}
static void
check_str(uint64_t i, char *str, bool mod)
{
char str2[] = "0000000000000000";
rand_str(i, str2);
if (mod)
str2[0] = 'A';
testutil_checkfmt(strcmp(str, str2), "strcmp failed, got %s, expected %s", str, str2);
}
static void
query_docs(WT_CURSOR *cursor, bool mod)
{
WT_ITEM key, value;
int i;
for (i = 0; i < NUM_QUERIES; i++) {
testutil_check(cursor->next(cursor));
testutil_check(cursor->get_key(cursor, &key));
testutil_check(cursor->get_value(cursor, &value));
check_str((uint64_t)key.data, (char *)value.data, mod);
}
printf("%d documents read\n", NUM_QUERIES);
}
static void *
compact_thread(void *args)
{
WT_SESSION *session;
session = (WT_SESSION *)args;
testutil_check(session->compact(session, name, NULL));
return (NULL);
}
int
main(int argc, char *argv[])
{
TEST_OPTS *opts, _opts;
WT_CURSOR *rcursor, *wcursor;
WT_ITEM key, value;
WT_SESSION *session, *session2;
pthread_t thread;
uint64_t i;
char str[] = "0000000000000000";
/*
* Create a clean test directory for this run of the test program if the environment variable
* isn't already set (as is done by make check).
*/
opts = &_opts;
memset(opts, 0, sizeof(*opts));
testutil_check(testutil_parse_opts(argc, argv, opts));
testutil_make_work_dir(opts->home);
testutil_check(wiredtiger_open(opts->home, NULL, "create,cache_size=200M", &opts->conn));
testutil_check(opts->conn->open_session(opts->conn, NULL, NULL, &session));
testutil_check(opts->conn->open_session(opts->conn, NULL, NULL, &session2));
testutil_check(session->create(session, name, "key_format=Q,value_format=S"));
/* Populate the table with some data. */
testutil_check(session->open_cursor(session, name, NULL, "overwrite", &wcursor));
for (i = 0; i < NUM_DOCS; i++) {
wcursor->set_key(wcursor, i);
rand_str(i, str);
wcursor->set_value(wcursor, str);
testutil_check(wcursor->insert(wcursor));
}
testutil_check(wcursor->close(wcursor));
printf("%d documents inserted\n", NUM_DOCS);
/* Perform some random reads */
testutil_check(session->open_cursor(session, name, NULL, "next_random=true", &rcursor));
query_docs(rcursor, false);
testutil_check(rcursor->close(rcursor));
/* Setup Transaction to pin the current values */
testutil_check(session2->begin_transaction(session2, "isolation=snapshot"));
testutil_check(session2->open_cursor(session2, name, NULL, "next_random=true", &rcursor));
/* Perform updates in a txn to confirm that we see only the original. */
testutil_check(session->open_cursor(session, name, NULL, "overwrite", &wcursor));
for (i = 0; i < NUM_DOCS; i++) {
rand_str(i, str);
str[0] = 'A';
wcursor->set_key(wcursor, i);
wcursor->set_value(wcursor, str);
testutil_check(wcursor->update(wcursor));
}
testutil_check(wcursor->close(wcursor));
printf("%d documents set to update\n", NUM_DOCS);
/* Random reads, which should see the original values */
query_docs(rcursor, false);
testutil_check(rcursor->close(rcursor));
/* Finish the txn */
testutil_check(session2->rollback_transaction(session2, NULL));
/* Random reads, which should see the updated values */
testutil_check(session2->open_cursor(session2, name, NULL, "next_random=true", &rcursor));
query_docs(rcursor, true);
testutil_check(rcursor->close(rcursor));
/* Setup a pre-delete txn */
testutil_check(session2->begin_transaction(session2, "isolation=snapshot"));
testutil_check(session2->open_cursor(session2, name, NULL, "next_random=true", &rcursor));
/* Delete all but one document */
testutil_check(session->open_cursor(session, name, NULL, "overwrite", &wcursor));
for (i = 0; i < NUM_DOCS - 1; i++) {
wcursor->set_key(wcursor, i);
testutil_check(wcursor->remove(wcursor));
}
testutil_check(wcursor->close(wcursor));
printf("%d documents deleted\n", NUM_DOCS - 1);
/* Random reads, which should not see the deletes */
query_docs(rcursor, true);
testutil_check(rcursor->close(rcursor));
/* Rollback the txn so we can see the deletes */
testutil_check(session2->rollback_transaction(session2, NULL));
/* Find the one remaining document 3 times */
testutil_check(session2->open_cursor(session2, name, NULL, "next_random=true", &rcursor));
for (i = 0; i < 3; i++) {
testutil_check(rcursor->next(rcursor));
testutil_check(rcursor->get_key(rcursor, &key));
testutil_check(rcursor->get_value(rcursor, &value));
/* There should only be one value available to us */
testutil_assertfmt((uint64_t)key.data == NUM_DOCS - 1, "expected %d and got %" PRIu64,
NUM_DOCS - 1, (uint64_t)key.data);
check_str((uint64_t)key.data, (char *)value.data, true);
}
printf("Found the deleted doc 3 times\n");
testutil_check(rcursor->close(rcursor));
/* Repopulate the table for compact. */
testutil_check(session->open_cursor(session, name, NULL, "overwrite", &wcursor));
for (i = 0; i < NUM_DOCS - 1; i++) {
wcursor->set_key(wcursor, i);
rand_str(i, str);
str[0] = 'A';
wcursor->set_value(wcursor, str);
testutil_check(wcursor->insert(wcursor));
}
testutil_check(wcursor->close(wcursor));
/* Run random cursor queries while compact is running */
testutil_check(session2->open_cursor(session2, name, NULL, "next_random=true", &rcursor));
testutil_check(pthread_create(&thread, NULL, compact_thread, session));
query_docs(rcursor, true);
testutil_check(rcursor->close(rcursor));
testutil_check(pthread_join(thread, NULL));
/* Delete everything. Check for infinite loops */
testutil_check(session->open_cursor(session, name, NULL, "overwrite", &wcursor));
for (i = 0; i < NUM_DOCS; i++) {
wcursor->set_key(wcursor, i);
testutil_check(wcursor->remove(wcursor));
}
testutil_check(wcursor->close(wcursor));
testutil_check(session2->open_cursor(session2, name, NULL, "next_random=true", &rcursor));
for (i = 0; i < 3; i++)
testutil_assert(rcursor->next(rcursor) == WT_NOTFOUND);
printf("Successfully got WT_NOTFOUND\n");
testutil_cleanup(opts);
return (EXIT_SUCCESS);
}
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