test/testmemcache.c

/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "testutil.h"
#include "apr.h"
#include "apu.h"
#include "apr_general.h"
#include "apr_strings.h"
#include "apr_hash.h"
#include "apr_memcache.h"

#if APR_HAVE_STDLIB_H
#include <stdlib.h>		/* for exit() */
#endif

#define HOST "localhost"
#define PORT 11211

/* the total number of items to use for set/get testing */
#define TDATA_SIZE 3000

/* some smaller subset of TDATA_SIZE */
#define TDATA_SET 100

/* all keys will be prefixed with this */
const char prefix[] = "testmemcache";

/* text for values we store */
const char txt[] =
"Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Duis at"
"lacus in ligula hendrerit consectetuer. Vestibulum tristique odio"
"iaculis leo. In massa arcu, ultricies a, laoreet nec, hendrerit non,"
"neque. Nulla sagittis sapien ac risus. Morbi ligula dolor, vestibulum"
"nec, viverra id, placerat dapibus, arcu. Curabitur egestas feugiat"
"tellus. Donec dignissim. Nunc ante. Curabitur id lorem. In mollis"
"tortor sit amet eros auctor dapibus. Proin nulla sem, tristique in,"
"convallis id, iaculis feugiat cras amet.";

/*
 * general test to make sure we can create the memcache struct and add
 * some servers, but not more than we tell it we can add
 */

static void test_memcache_create(abts_case * tc, void *data)
{
  apr_pool_t *pool = p;
  apr_status_t rv;
  apr_memcache_t *memcache;
  apr_memcache_server_t *server, *s;
  int max_servers = 10;
  int i;
  apr_uint32_t hash;

  rv = apr_memcache_create(pool, max_servers, 0, &memcache);
  ABTS_ASSERT(tc, "memcache create failed", rv == APR_SUCCESS);
  
  for (i = 1; i <= max_servers; i++) {
    apr_port_t port;
    
    port = PORT + i;
    rv =
      apr_memcache_server_create(pool, HOST, PORT + i, 0, 1, 1, 60, &server);
    ABTS_ASSERT(tc, "server create failed", rv == APR_SUCCESS);
    
    rv = apr_memcache_add_server(memcache, server);
    ABTS_ASSERT(tc, "server add failed", rv == APR_SUCCESS);
    
    s = apr_memcache_find_server(memcache, HOST, port);
    ABTS_PTR_EQUAL(tc, s, server);
    
    rv = apr_memcache_disable_server(memcache, s);
    ABTS_ASSERT(tc, "server disable failed", rv == APR_SUCCESS);
    
    rv = apr_memcache_enable_server(memcache, s);
    ABTS_ASSERT(tc, "server enable failed", rv == APR_SUCCESS);
    
    hash = apr_memcache_hash(memcache, prefix, strlen(prefix));
    ABTS_ASSERT(tc, "hash failed", hash > 0);
    
    s = apr_memcache_find_server_hash(memcache, hash);
    ABTS_PTR_NOTNULL(tc, s);
  }

  rv = apr_memcache_server_create(pool, HOST, PORT, 0, 1, 1, 60, &server);
  ABTS_ASSERT(tc, "server create failed", rv == APR_SUCCESS);
  
  rv = apr_memcache_add_server(memcache, server);
  ABTS_ASSERT(tc, "server add should have failed", rv != APR_SUCCESS);
  
}

/* test non data related commands like stats and version */
static void test_memcache_meta(abts_case * tc, void *data)
{
    apr_pool_t *pool = p;
    apr_memcache_t *memcache;
    apr_memcache_server_t *server;
    apr_memcache_stats_t *stats;
    char *result;
    apr_status_t rv;

    rv = apr_memcache_create(pool, 1, 0, &memcache);
    ABTS_ASSERT(tc, "memcache create failed", rv == APR_SUCCESS);

    rv = apr_memcache_server_create(pool, HOST, PORT, 0, 1, 1, 60, &server);
    ABTS_ASSERT(tc, "server create failed", rv == APR_SUCCESS);

    rv = apr_memcache_add_server(memcache, server);
    ABTS_ASSERT(tc, "server add failed", rv == APR_SUCCESS);

    rv = apr_memcache_version(server, pool, &result);
    ABTS_PTR_NOTNULL(tc, result);

    rv = apr_memcache_stats(server, p, &stats);
    ABTS_PTR_NOTNULL(tc, stats);

    ABTS_STR_NEQUAL(tc, stats->version, result, 5);

    /* 
     * no way to know exactly what will be in most of these, so
     * just make sure there is something.
     */
    
    ABTS_ASSERT(tc, "pid", stats->pid >= 0);
    ABTS_ASSERT(tc, "time", stats->time >= 0);
    /* ABTS_ASSERT(tc, "pointer_size", stats->pointer_size >= 0); */
    ABTS_ASSERT(tc, "rusage_user", stats->rusage_user >= 0);
    ABTS_ASSERT(tc, "rusage_system", stats->rusage_system >= 0);

    ABTS_ASSERT(tc, "curr_items", stats->curr_items >= 0);
    ABTS_ASSERT(tc, "total_items", stats->total_items >= 0);
    ABTS_ASSERT(tc, "bytes", stats->bytes >= 0);

    ABTS_ASSERT(tc, "curr_connections", stats->curr_connections >= 0);
    ABTS_ASSERT(tc, "total_connections", stats->total_connections >= 0);
    ABTS_ASSERT(tc, "connection_structures", 
                stats->connection_structures >= 0);

    ABTS_ASSERT(tc, "cmd_get", stats->cmd_get >= 0);
    ABTS_ASSERT(tc, "cmd_set", stats->cmd_set >= 0);
    ABTS_ASSERT(tc, "get_hits", stats->get_hits >= 0);
    ABTS_ASSERT(tc, "get_misses", stats->get_misses >= 0);

    /* ABTS_ASSERT(tc, "evictions", stats->evictions >= 0); */

    ABTS_ASSERT(tc, "bytes_read", stats->bytes_read >= 0);
    ABTS_ASSERT(tc, "bytes_written", stats->bytes_written >= 0);
    ABTS_ASSERT(tc, "limit_maxbytes", stats->limit_maxbytes >= 0);

    /* ABTS_ASSERT(tc, "threads", stats->threads >= 0); */
}

/* test add and replace calls */

static void test_memcache_addreplace(abts_case * tc, void *data)
{
 apr_pool_t *pool = p;
 apr_pool_t *tmppool;
 apr_status_t rv;
 apr_memcache_t *memcache;
 apr_memcache_server_t *server;
 apr_hash_t *tdata;
 apr_hash_index_t *hi;
 char *result;
 apr_size_t len;
 int i;

  rv = apr_memcache_create(pool, 1, 0, &memcache);
  ABTS_ASSERT(tc, "memcache create failed", rv == APR_SUCCESS);
  
  rv = apr_memcache_server_create(pool, HOST, PORT, 0, 1, 1, 60, &server);
  ABTS_ASSERT(tc, "server create failed", rv == APR_SUCCESS);
  
  rv = apr_memcache_add_server(memcache, server);
  ABTS_ASSERT(tc, "server add failed", rv == APR_SUCCESS);
  
  tdata = apr_hash_make(p);
  create_test_hash(pool, tdata);

  for (hi = apr_hash_first(p, tdata); hi; hi = apr_hash_next(hi)) {
    const void *k;
    void *v;
    const char *key;

    apr_hash_this(hi, &k, NULL, &v);
    key = k;

    /* doesn't exist yet, fail */
    rv = apr_memcache_replace(memcache, key, v, strlen(v) - 1, 0, 27);
    ABTS_ASSERT(tc, "replace should have failed", rv != APR_SUCCESS);
    
    /* doesn't exist yet, succeed */
    rv = apr_memcache_add(memcache, key, v, strlen(v), 0, 27);
    ABTS_ASSERT(tc, "add failed", rv == APR_SUCCESS);

    /* exists now, succeed */
    rv = apr_memcache_replace(memcache, key, "new", sizeof("new") - 1, 0, 27);
    ABTS_ASSERT(tc, "replace failed", rv == APR_SUCCESS);

    /* make sure its different */
    rv = apr_memcache_getp(memcache, pool, key, &result, &len, NULL);
    ABTS_ASSERT(tc, "get failed", rv == APR_SUCCESS);
    ABTS_STR_NEQUAL(tc, result, "new", 3);

    /* exists now, fail */
    rv = apr_memcache_add(memcache, key, v, strlen(v), 0, 27);
    ABTS_ASSERT(tc, "add should have failed", rv != APR_SUCCESS);

    /* clean up */
    rv = apr_memcache_delete(memcache, key, 0);
    ABTS_ASSERT(tc, "delete failed", rv == APR_SUCCESS);
  }
}

static void test_memcache_incrdecr(abts_case * tc, void *data)
{
 apr_pool_t *pool = p;
 apr_status_t rv;
 apr_memcache_t *memcache;
 apr_memcache_server_t *server;
 apr_uint32_t new, next = 2;
 char *result;
 apr_size_t len;
 int i;

  rv = apr_memcache_create(pool, 1, 0, &memcache);
  ABTS_ASSERT(tc, "memcache create failed", rv == APR_SUCCESS);
  
  rv = apr_memcache_server_create(pool, HOST, PORT, 0, 1, 1, 60, &server);
  ABTS_ASSERT(tc, "server create failed", rv == APR_SUCCESS);
  
  rv = apr_memcache_add_server(memcache, server);
  ABTS_ASSERT(tc, "server add failed", rv == APR_SUCCESS);

  rv = apr_memcache_set(memcache, prefix, "271", sizeof("271") - 1, 0, 27);
  ABTS_ASSERT(tc, "set failed", rv == APR_SUCCESS);
  
  for( i = 1; i <= TDATA_SIZE; i++) {
    int expect;

    rv = apr_memcache_getp(memcache, pool, prefix, &result, &len, NULL);
    ABTS_ASSERT(tc, "get failed", rv == APR_SUCCESS);

    expect = i + atoi(result);

    rv = apr_memcache_incr(memcache, prefix, i, &new);
    ABTS_ASSERT(tc, "incr failed", rv == APR_SUCCESS);

    ABTS_INT_EQUAL(tc, expect, new);

    rv = apr_memcache_decr(memcache, prefix, i, &new);
    ABTS_ASSERT(tc, "decr failed", rv == APR_SUCCESS);
    ABTS_INT_EQUAL(tc, atoi(result), new);

  }

  rv = apr_memcache_getp(memcache, pool, prefix, &result, &len, NULL);
  ABTS_ASSERT(tc, "get failed", rv == APR_SUCCESS);

  ABTS_INT_EQUAL(tc, atoi(result), 271);

  rv = apr_memcache_delete(memcache, prefix, 0);
  ABTS_ASSERT(tc, "delete failed", rv == APR_SUCCESS);
}

/* test the multiget functionality */

static void test_memcache_multiget(abts_case * tc, void *data)
{
  apr_pool_t *pool = p;
  apr_pool_t *tmppool;
  apr_status_t rv;
  apr_memcache_t *memcache;
  apr_memcache_server_t *server;
  apr_hash_t *tdata, *values;
  apr_hash_index_t *hi;
  int i;

  rv = apr_memcache_create(pool, 1, 0, &memcache);
  ABTS_ASSERT(tc, "memcache create failed", rv == APR_SUCCESS);
  
  rv = apr_memcache_server_create(pool, HOST, PORT, 0, 1, 1, 60, &server);
  ABTS_ASSERT(tc, "server create failed", rv == APR_SUCCESS);
  
  rv = apr_memcache_add_server(memcache, server);
  ABTS_ASSERT(tc, "server add failed", rv == APR_SUCCESS);
  
  values = apr_hash_make(p);
  tdata = apr_hash_make(p);
  
  create_test_hash(pool, tdata);

  for (hi = apr_hash_first(p, tdata); hi; hi = apr_hash_next(hi)) {
    const void *k;
    void *v;
    const char *key;

    apr_hash_this(hi, &k, NULL, &v);
    key = k;

    rv = apr_memcache_set(memcache, key, v, strlen(v), 0, 27);
    ABTS_ASSERT(tc, "set failed", rv == APR_SUCCESS);
  }
  
  rv = apr_pool_create(&tmppool, pool);
  for (i = 0; i < TDATA_SET; i++)
    apr_memcache_add_multget_key(pool,
                                 apr_pstrcat(pool, prefix,
                                             apr_itoa(pool, i), NULL),
                                 &values);
    
  rv = apr_memcache_multgetp(memcache,
                             tmppool,
                             pool,
                             values);
  
  ABTS_ASSERT(tc, "multgetp failed", rv == APR_SUCCESS);
  ABTS_ASSERT(tc, "multgetp returned too few results",
              apr_hash_count(values) == TDATA_SET);
  
  for (hi = apr_hash_first(p, tdata); hi; hi = apr_hash_next(hi)) {
    const void *k;
    void *v;
    const char *key;
    
    apr_hash_this(hi, &k, NULL, NULL);
    key = k;

    rv = apr_memcache_delete(memcache, key, 0);
    ABTS_ASSERT(tc, "delete failed", rv == APR_SUCCESS);
  }
  
}

/* test setting and getting */

static void test_memcache_setget(abts_case * tc, void *data)
{
    apr_pool_t *pool = p;
    apr_status_t rv;
    apr_memcache_t *memcache;
    apr_memcache_server_t *server;
    apr_hash_t *tdata, *values;
    apr_hash_index_t *hi;
    char *result, *k;
    apr_size_t len;
    apr_uint16_t flags;
    int i;

    rv = apr_memcache_create(pool, 1, 0, &memcache);
    ABTS_ASSERT(tc, "memcache create failed", rv == APR_SUCCESS);

    rv = apr_memcache_server_create(pool, HOST, PORT, 0, 1, 1, 60, &server);
    ABTS_ASSERT(tc, "server create failed", rv == APR_SUCCESS);

    rv = apr_memcache_add_server(memcache, server);
    ABTS_ASSERT(tc, "server add failed", rv == APR_SUCCESS);

    tdata = apr_hash_make(pool);
    values = apr_hash_make(pool);

    create_test_hash(pool, tdata);

    for (hi = apr_hash_first(p, tdata); hi; hi = apr_hash_next(hi)) {
	const void *k;
	void *v;
        const char *key;

	apr_hash_this(hi, &k, NULL, &v);
        key = k;

	rv = apr_memcache_set(memcache, key, v, strlen(v), 0, 27);
	ABTS_ASSERT(tc, "set failed", rv == APR_SUCCESS);
	rv = apr_memcache_getp(memcache, pool, key, &result, &len, NULL);
	ABTS_ASSERT(tc, "get failed", rv == APR_SUCCESS);
    }

    rv = apr_memcache_getp(memcache, pool, "nothere3423", &result, &len, NULL);

    ABTS_ASSERT(tc, "get should have failed", rv != APR_SUCCESS);

    for (hi = apr_hash_first(p, tdata); hi; hi = apr_hash_next(hi)) {
	const void *k;
	void *v;
	const char *key;

	apr_hash_this(hi, &k, NULL, NULL);
	key = k;

	rv = apr_memcache_delete(memcache, key, 0);
	ABTS_ASSERT(tc, "delete failed", rv == APR_SUCCESS);
    }
}

int create_test_hash(apr_pool_t *p, apr_hash_t *h)
{
  apr_status_t rv;
  int i;
  
  for (i = 0; i < TDATA_SIZE; i++) {
    char *k, *v;
    
    k = apr_pstrcat(p, prefix, apr_itoa(p, i), NULL);
    v = apr_pstrndup(p, txt, randval(strlen(txt)));
    
    apr_hash_set(h, k, APR_HASH_KEY_STRING, v);
  }

  return i;
}

int firsttime = 0;
int randval(int high)
{
    unsigned int i = 0;
    double d = 0;

    if (firsttime == 0) {
	srand((unsigned) (getpid()));
	firsttime = 1;
    }

    d = (double) rand() / ((double) RAND_MAX + 1);
    i = (int) (d * (high - 0 + 1));

    return i > 0 ? i : 1;
}

abts_suite *testmemcache(abts_suite * suite)
{
    suite = ADD_SUITE(suite);
    /* TODO: Determine if a memcache server is online, before proceding. */
#if 0
    abts_run_test(suite, test_memcache_create, NULL);
    abts_run_test(suite, test_memcache_meta, NULL);
    abts_run_test(suite, test_memcache_setget, NULL);
    abts_run_test(suite, test_memcache_multiget, NULL);
    abts_run_test(suite, test_memcache_addreplace, NULL);
    abts_run_test(suite, test_memcache_incrdecr, NULL);
#endif
    return suite;
}