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redis_array_impl.c
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redis_array_impl.c
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/*
+----------------------------------------------------------------------+
| PHP Version 5 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2009 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Nicolas Favre-Felix <n.favre-felix@owlient.eu> |
| Maintainer: Michael Grunder <michael.grunder@gmail.com> |
+----------------------------------------------------------------------+
*/
#include "redis_array_impl.h"
#include "php_redis.h"
#include "library.h"
#include "php_variables.h"
#include "SAPI.h"
#include "ext/standard/url.h"
#include "ext/standard/crc32.h"
#include "ext/standard/md5.h"
#include "ext/hash/php_hash.h"
#define PHPREDIS_INDEX_NAME "__phpredis_array_index__"
extern zend_class_entry *redis_ce;
static RedisArray *
ra_load_hosts(RedisArray *ra, HashTable *hosts, zend_string *auth, long retry_interval, zend_bool b_lazy_connect)
{
int i = 0, host_len;
char *host, *p;
short port;
zval *zpData, z_cons, z_ret;
redis_object *redis;
/* function calls on the Redis object */
ZVAL_STRINGL(&z_cons, "__construct", 11);
/* init connections */
ZEND_HASH_FOREACH_VAL(hosts, zpData) {
if (Z_TYPE_P(zpData) != IS_STRING) {
zval_dtor(&z_cons);
return NULL;
}
/* default values */
host = Z_STRVAL_P(zpData);
host_len = Z_STRLEN_P(zpData);
ra->hosts[i] = zend_string_init(host, host_len, 0);
port = 6379;
if((p = strrchr(host, ':'))) { /* found port */
host_len = p - host;
port = (short)atoi(p+1);
} else if(strchr(host,'/') != NULL) { /* unix socket */
port = -1;
}
/* create Redis object */
object_init_ex(&ra->redis[i], redis_ce);
call_user_function(&redis_ce->function_table, &ra->redis[i], &z_cons, &z_ret, 0, NULL);
zval_dtor(&z_ret);
redis = PHPREDIS_GET_OBJECT(redis_object, &ra->redis[i]);
/* create socket */
redis->sock = redis_sock_create(host, host_len, port, ra->connect_timeout, ra->read_timeout, ra->pconnect, NULL, retry_interval);
/* copy password is specified */
if (auth) redis->sock->auth = zend_string_copy(auth);
if (!b_lazy_connect)
{
/* connect */
if (redis_sock_server_open(redis->sock) < 0 || (auth && redis_sock_auth(redis->sock ) < 0)) {
zval_dtor(&z_cons);
ra->count = ++i;
return NULL;
}
}
ra->count = ++i;
} ZEND_HASH_FOREACH_END();
zval_dtor(&z_cons);
return ra;
}
/* List pure functions */
void
ra_init_function_table(RedisArray *ra)
{
ALLOC_HASHTABLE(ra->pure_cmds);
zend_hash_init(ra->pure_cmds, 0, NULL, NULL, 0);
zend_hash_str_update_ptr(ra->pure_cmds, "EXISTS", sizeof("EXISTS") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "GET", sizeof("GET") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "GETBIT", sizeof("GETBIT") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "GETRANGE", sizeof("GETRANGE") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "HEXISTS", sizeof("HEXISTS") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "HGET", sizeof("HGET") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "HGETALL", sizeof("HGETALL") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "HKEYS", sizeof("HKEYS") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "HLEN", sizeof("HLEN") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "HMGET", sizeof("HMGET") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "HVALS", sizeof("HVALS") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "LINDEX", sizeof("LINDEX") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "LLEN", sizeof("LLEN") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "LRANGE", sizeof("LRANGE") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "OBJECT", sizeof("OBJECT") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "SCARD", sizeof("SCARD") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "SDIFF", sizeof("SDIFF") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "SINTER", sizeof("SINTER") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "SISMEMBER", sizeof("SISMEMBER") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "SMEMBERS", sizeof("SMEMBERS") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "SRANDMEMBER", sizeof("SRANDMEMBER") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "STRLEN", sizeof("STRLEN") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "SUNION", sizeof("SUNION") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "TYPE", sizeof("TYPE") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZCARD", sizeof("ZCARD") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZCOUNT", sizeof("ZCOUNT") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZRANGE", sizeof("ZRANGE") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZRANK", sizeof("ZRANK") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZREVRANGE", sizeof("ZREVRANGE") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZREVRANGEBYSCORE", sizeof("ZREVRANGEBYSCORE") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZREVRANK", sizeof("ZREVRANK") - 1, NULL);
zend_hash_str_update_ptr(ra->pure_cmds, "ZSCORE", sizeof("ZSCORE") - 1, NULL);
}
static int
ra_find_name(const char *name) {
const char *ini_names, *p, *next;
/* php_printf("Loading redis array with name=[%s]\n", name); */
ini_names = INI_STR("redis.arrays.names");
for(p = ini_names; p;) {
next = strchr(p, ',');
if(next) {
if(strncmp(p, name, next - p) == 0) {
return 1;
}
} else {
if(strcmp(p, name) == 0) {
return 1;
}
break;
}
p = next + 1;
}
return 0;
}
/* laod array from INI settings */
RedisArray *ra_load_array(const char *name) {
zval *z_data, z_fun, z_dist;
zval z_params_hosts;
zval z_params_prev;
zval z_params_funs;
zval z_params_dist;
zval z_params_algo;
zval z_params_index;
zval z_params_autorehash;
zval z_params_retry_interval;
zval z_params_pconnect;
zval z_params_connect_timeout;
zval z_params_read_timeout;
zval z_params_lazy_connect;
zval z_params_consistent;
zval z_params_auth;
RedisArray *ra = NULL;
zend_string *algorithm = NULL, *auth = NULL;
zend_bool b_index = 0, b_autorehash = 0, b_pconnect = 0, consistent = 0;
long l_retry_interval = 0;
zend_bool b_lazy_connect = 0;
double d_connect_timeout = 0, read_timeout = 0.0;
HashTable *hHosts = NULL, *hPrev = NULL;
size_t name_len = strlen(name);
char *iptr;
/* find entry */
if(!ra_find_name(name))
return ra;
/* find hosts */
array_init(&z_params_hosts);
if ((iptr = INI_STR("redis.arrays.hosts")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_hosts);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_hosts), name, name_len)) != NULL) {
hHosts = Z_ARRVAL_P(z_data);
}
/* find previous hosts */
array_init(&z_params_prev);
if ((iptr = INI_STR("redis.arrays.previous")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_prev);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_prev), name, name_len)) != NULL) {
hPrev = Z_ARRVAL_P(z_data);
}
/* find function */
array_init(&z_params_funs);
if ((iptr = INI_STR("redis.arrays.functions")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_funs);
}
ZVAL_NULL(&z_fun);
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_funs), name, name_len)) != NULL) {
ZVAL_ZVAL(&z_fun, z_data, 1, 0);
}
/* find distributor */
array_init(&z_params_dist);
if ((iptr = INI_STR("redis.arrays.distributor")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_dist);
}
ZVAL_NULL(&z_dist);
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_dist), name, name_len)) != NULL) {
ZVAL_ZVAL(&z_dist, z_data, 1, 0);
}
/* find hash algorithm */
array_init(&z_params_algo);
if ((iptr = INI_STR("redis.arrays.algorithm")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_algo);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_algo), name, name_len)) != NULL) {
algorithm = zval_get_string(z_data);
}
/* find index option */
array_init(&z_params_index);
if ((iptr = INI_STR("redis.arrays.index")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_index);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_index), name, name_len)) != NULL) {
if (Z_TYPE_P(z_data) == IS_STRING && strncmp(Z_STRVAL_P(z_data), "1", 1) == 0) {
b_index = 1;
}
}
/* find autorehash option */
array_init(&z_params_autorehash);
if ((iptr = INI_STR("redis.arrays.autorehash")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_autorehash);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_autorehash), name, name_len)) != NULL) {
if(Z_TYPE_P(z_data) == IS_STRING && strncmp(Z_STRVAL_P(z_data), "1", 1) == 0) {
b_autorehash = 1;
}
}
/* find retry interval option */
array_init(&z_params_retry_interval);
if ((iptr = INI_STR("redis.arrays.retryinterval")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_retry_interval);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_retry_interval), name, name_len)) != NULL) {
if (Z_TYPE_P(z_data) == IS_LONG) {
l_retry_interval = Z_LVAL_P(z_data);
} else if (Z_TYPE_P(z_data) == IS_STRING) {
l_retry_interval = atol(Z_STRVAL_P(z_data));
}
}
/* find pconnect option */
array_init(&z_params_pconnect);
if ((iptr = INI_STR("redis.arrays.pconnect")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_pconnect);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_pconnect), name, name_len)) != NULL) {
if(Z_TYPE_P(z_data) == IS_STRING && strncmp(Z_STRVAL_P(z_data), "1", 1) == 0) {
b_pconnect = 1;
}
}
/* find lazy connect option */
array_init(&z_params_lazy_connect);
if ((iptr = INI_STR("redis.arrays.lazyconnect")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_lazy_connect);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_lazy_connect), name, name_len)) != NULL) {
if (Z_TYPE_P(z_data) == IS_STRING && strncmp(Z_STRVAL_P(z_data), "1", 1) == 0) {
b_lazy_connect = 1;
}
}
/* find connect timeout option */
array_init(&z_params_connect_timeout);
if ((iptr = INI_STR("redis.arrays.connecttimeout")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_connect_timeout);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_connect_timeout), name, name_len)) != NULL) {
if (Z_TYPE_P(z_data) == IS_DOUBLE) {
d_connect_timeout = Z_DVAL_P(z_data);
} else if (Z_TYPE_P(z_data) == IS_STRING) {
d_connect_timeout = atof(Z_STRVAL_P(z_data));
} else if (Z_TYPE_P(z_data) == IS_LONG) {
d_connect_timeout = Z_LVAL_P(z_data);
}
}
/* find read timeout option */
array_init(&z_params_read_timeout);
if ((iptr = INI_STR("redis.arrays.readtimeout")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_read_timeout);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_read_timeout), name, name_len)) != NULL) {
if (Z_TYPE_P(z_data) == IS_DOUBLE) {
read_timeout = Z_DVAL_P(z_data);
} else if (Z_TYPE_P(z_data) == IS_STRING) {
read_timeout = atof(Z_STRVAL_P(z_data));
} else if (Z_TYPE_P(z_data) == IS_LONG) {
read_timeout = Z_LVAL_P(z_data);
}
}
/* find consistent option */
array_init(&z_params_consistent);
if ((iptr = INI_STR("redis.arrays.consistent")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_consistent);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_consistent), name, name_len)) != NULL) {
if (Z_TYPE_P(z_data) == IS_STRING && strncmp(Z_STRVAL_P(z_data), "1", 1) == 0) {
consistent = 1;
}
}
/* find auth option */
array_init(&z_params_auth);
if ((iptr = INI_STR("redis.arrays.auth")) != NULL) {
sapi_module.treat_data(PARSE_STRING, estrdup(iptr), &z_params_auth);
}
if ((z_data = zend_hash_str_find(Z_ARRVAL(z_params_auth), name, name_len)) != NULL) {
auth = zval_get_string(z_data);
}
/* create RedisArray object */
ra = ra_make_array(hHosts, &z_fun, &z_dist, hPrev, b_index, b_pconnect, l_retry_interval, b_lazy_connect, d_connect_timeout, read_timeout, consistent, algorithm, auth);
if (ra) {
ra->auto_rehash = b_autorehash;
if(ra->prev) ra->prev->auto_rehash = b_autorehash;
}
/* cleanup */
if (algorithm) zend_string_release(algorithm);
if (auth) zend_string_release(auth);
zval_dtor(&z_params_hosts);
zval_dtor(&z_params_prev);
zval_dtor(&z_params_funs);
zval_dtor(&z_params_dist);
zval_dtor(&z_params_algo);
zval_dtor(&z_params_index);
zval_dtor(&z_params_autorehash);
zval_dtor(&z_params_retry_interval);
zval_dtor(&z_params_pconnect);
zval_dtor(&z_params_connect_timeout);
zval_dtor(&z_params_read_timeout);
zval_dtor(&z_params_lazy_connect);
zval_dtor(&z_params_consistent);
zval_dtor(&z_params_auth);
zval_dtor(&z_dist);
zval_dtor(&z_fun);
return ra;
}
static int
ra_points_cmp(const void *v1, const void *v2)
{
const ContinuumPoint *p1 = v1, *p2 = v2;
return p1->value < p2->value ? - 1 : p1->value > p2->value;
}
static Continuum *
ra_make_continuum(zend_string **hosts, int nb_hosts)
{
int i, j, k, len, idx = 0;
char host[HOST_NAME_MAX];
unsigned char digest[16];
PHP_MD5_CTX ctx;
Continuum *c;
c = ecalloc(1, sizeof(*c));
c->nb_points = nb_hosts * 160; /* 40 hashes, 4 numbers per hash = 160 points per server */
c->points = ecalloc(c->nb_points, sizeof(*c->points));
for (i = 0; i < nb_hosts; ++i) {
for (j = 0; j < 40; ++j) {
len = snprintf(host, sizeof(host), "%.*s-%u", (int)ZSTR_LEN(hosts[i]), ZSTR_VAL(hosts[i]), j);
PHP_MD5Init(&ctx);
PHP_MD5Update(&ctx, host, len);
PHP_MD5Final(digest, &ctx);
for (k = 0; k < 4; ++k) {
c->points[idx].index = i;
c->points[idx++].value = (digest[3 + k * 4] << 24)
| (digest[2 + k * 4] << 16)
| (digest[1 + k * 4] << 8)
| (digest[k * 4]);
}
}
}
qsort(c->points, c->nb_points, sizeof(*c->points), ra_points_cmp);
return c;
}
RedisArray *
ra_make_array(HashTable *hosts, zval *z_fun, zval *z_dist, HashTable *hosts_prev, zend_bool b_index, zend_bool b_pconnect, long retry_interval, zend_bool b_lazy_connect, double connect_timeout, double read_timeout, zend_bool consistent, zend_string *algorithm, zend_string *auth)
{
int i, count;
RedisArray *ra;
if (!hosts || (count = zend_hash_num_elements(hosts)) == 0) return NULL;
/* create object */
ra = emalloc(sizeof(RedisArray));
ra->hosts = ecalloc(count, sizeof(*ra->hosts));
ra->redis = ecalloc(count, sizeof(*ra->redis));
ra->count = 0;
ra->z_multi_exec = NULL;
ra->index = b_index;
ra->auto_rehash = 0;
ra->pconnect = b_pconnect;
ra->connect_timeout = connect_timeout;
ra->read_timeout = read_timeout;
ra->continuum = NULL;
ra->algorithm = NULL;
if (ra_load_hosts(ra, hosts, auth, retry_interval, b_lazy_connect) == NULL || !ra->count) {
for (i = 0; i < ra->count; ++i) {
zval_dtor(&ra->redis[i]);
zend_string_release(ra->hosts[i]);
}
efree(ra->redis);
efree(ra->hosts);
efree(ra);
return NULL;
}
ra->prev = hosts_prev ? ra_make_array(hosts_prev, z_fun, z_dist, NULL, b_index, b_pconnect, retry_interval, b_lazy_connect, connect_timeout, read_timeout, consistent, algorithm, auth) : NULL;
/* init array data structures */
ra_init_function_table(ra);
/* Set hash function and distribtor if provided */
ZVAL_ZVAL(&ra->z_fun, z_fun, 1, 0);
ZVAL_ZVAL(&ra->z_dist, z_dist, 1, 0);
if (algorithm) ra->algorithm = zend_string_copy(algorithm);
/* init continuum */
if (consistent) {
ra->continuum = ra_make_continuum(ra->hosts, ra->count);
}
return ra;
}
/* call userland key extraction function */
zend_string *
ra_call_extractor(RedisArray *ra, const char *key, int key_len)
{
zend_string *out = NULL;
zval z_ret, z_argv;
/* check that we can call the extractor function */
if (!zend_is_callable_ex(&ra->z_fun, NULL, 0, NULL, NULL, NULL)) {
php_error_docref(NULL, E_ERROR, "Could not call extractor function");
return NULL;
}
ZVAL_NULL(&z_ret);
/* call extraction function */
ZVAL_STRINGL(&z_argv, key, key_len);
ra_call_user_function(EG(function_table), NULL, &ra->z_fun, &z_ret, 1, &z_argv);
if (Z_TYPE(z_ret) == IS_STRING) {
out = zval_get_string(&z_ret);
}
zval_dtor(&z_argv);
zval_dtor(&z_ret);
return out;
}
static zend_string *
ra_extract_key(RedisArray *ra, const char *key, int key_len)
{
char *start, *end;
if (Z_TYPE(ra->z_fun) != IS_NULL) {
return ra_call_extractor(ra, key, key_len);
} else if ((start = strchr(key, '{')) == NULL || (end = strchr(start + 1, '}')) == NULL) {
return zend_string_init(key, key_len, 0);
}
/* found substring */
return zend_string_init(start + 1, end - start - 1, 0);
}
/* call userland key distributor function */
int
ra_call_distributor(RedisArray *ra, const char *key, int key_len)
{
int ret;
zval z_ret, z_argv;
/* check that we can call the extractor function */
if (!zend_is_callable_ex(&ra->z_dist, NULL, 0, NULL, NULL, NULL)) {
php_error_docref(NULL, E_ERROR, "Could not call distributor function");
return -1;
}
ZVAL_NULL(&z_ret);
/* call extraction function */
ZVAL_STRINGL(&z_argv, key, key_len);
ra_call_user_function(EG(function_table), NULL, &ra->z_dist, &z_ret, 1, &z_argv);
ret = (Z_TYPE(z_ret) == IS_LONG) ? Z_LVAL(z_ret) : -1;
zval_dtor(&z_argv);
zval_dtor(&z_ret);
return ret;
}
zval *
ra_find_node(RedisArray *ra, const char *key, int key_len, int *out_pos)
{
int pos;
zend_string *out;
/* extract relevant part of the key */
if ((out = ra_extract_key(ra, key, key_len)) == NULL) {
return NULL;
}
if (Z_TYPE(ra->z_dist) == IS_NULL) {
int i;
unsigned long ret = 0xffffffff;
const php_hash_ops *ops;
/* hash */
if (ra->algorithm && (ops = php_hash_fetch_ops(ZSTR_VAL(ra->algorithm), ZSTR_LEN(ra->algorithm))) != NULL) {
void *ctx = emalloc(ops->context_size);
unsigned char *digest = emalloc(ops->digest_size);
ops->hash_init(ctx);
ops->hash_update(ctx, (const unsigned char *)ZSTR_VAL(out), ZSTR_LEN(out));
ops->hash_final(digest, ctx);
memcpy(&ret, digest, MIN(sizeof(ret), ops->digest_size));
ret %= 0xffffffff;
efree(digest);
efree(ctx);
} else {
for (i = 0; i < ZSTR_LEN(out); ++i) {
CRC32(ret, ZSTR_VAL(out)[i]);
}
}
/* get position on ring */
if (ra->continuum) {
int left = 0, right = ra->continuum->nb_points;
while (left < right) {
i = (int)((left + right) / 2);
if (ra->continuum->points[i].value < ret) {
left = i + 1;
} else {
right = i;
}
}
if (right == ra->continuum->nb_points) {
right = 0;
}
pos = ra->continuum->points[right].index;
} else {
pos = (int)((ret ^ 0xffffffff) * ra->count / 0xffffffff);
}
} else {
pos = ra_call_distributor(ra, key, key_len);
if (pos < 0 || pos >= ra->count) {
zend_string_release(out);
return NULL;
}
}
zend_string_release(out);
if(out_pos) *out_pos = pos;
return &ra->redis[pos];
}
zval *
ra_find_node_by_name(RedisArray *ra, const char *host, int host_len) {
int i;
for(i = 0; i < ra->count; ++i) {
if (ZSTR_LEN(ra->hosts[i]) == host_len && strcmp(ZSTR_VAL(ra->hosts[i]), host) == 0) {
return &ra->redis[i];
}
}
return NULL;
}
void
ra_index_multi(zval *z_redis, long multi_value) {
zval z_fun_multi, z_ret;
zval z_args[1];
/* run MULTI */
ZVAL_STRINGL(&z_fun_multi, "MULTI", 5);
ZVAL_LONG(&z_args[0], multi_value);
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun_multi, &z_ret, 1, z_args);
zval_dtor(&z_fun_multi);
zval_dtor(&z_ret);
}
static void
ra_index_change_keys(const char *cmd, zval *z_keys, zval *z_redis) {
int i, argc;
zval z_fun, z_ret, *z_args;
/* alloc */
argc = 1 + zend_hash_num_elements(Z_ARRVAL_P(z_keys));
z_args = ecalloc(argc, sizeof(zval));
/* prepare first parameters */
ZVAL_STRING(&z_fun, cmd);
ZVAL_STRINGL(&z_args[0], PHPREDIS_INDEX_NAME, sizeof(PHPREDIS_INDEX_NAME) - 1);
/* prepare keys */
for(i = 0; i < argc - 1; ++i) {
zval *zv = zend_hash_index_find(Z_ARRVAL_P(z_keys), i);
if (zv == NULL) {
ZVAL_NULL(&z_args[i+1]);
} else {
z_args[i+1] = *zv;
}
}
/* run cmd */
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun, &z_ret, argc, z_args);
zval_dtor(&z_args[0]);
zval_dtor(&z_fun);
zval_dtor(&z_ret);
efree(z_args); /* free container */
}
void
ra_index_del(zval *z_keys, zval *z_redis) {
ra_index_change_keys("SREM", z_keys, z_redis);
}
void
ra_index_keys(zval *z_pairs, zval *z_redis) {
zval z_keys, *z_val;
zend_string *zkey;
zend_ulong idx;
/* Initialize key array */
array_init_size(&z_keys, zend_hash_num_elements(Z_ARRVAL_P(z_pairs)));
/* Go through input array and add values to the key array */
ZEND_HASH_FOREACH_KEY_VAL(Z_ARRVAL_P(z_pairs), idx, zkey, z_val) {
zval z_new;
PHPREDIS_NOTUSED(z_val);
if (zkey) {
ZVAL_STRINGL(&z_new, ZSTR_VAL(zkey), ZSTR_LEN(zkey));
} else {
ZVAL_LONG(&z_new, idx);
}
zend_hash_next_index_insert(Z_ARRVAL(z_keys), &z_new);
} ZEND_HASH_FOREACH_END();
/* add keys to index */
ra_index_change_keys("SADD", &z_keys, z_redis);
/* cleanup */
zval_dtor(&z_keys);
}
void
ra_index_key(const char *key, int key_len, zval *z_redis) {
zval z_fun_sadd, z_ret, z_args[2];
/* prepare args */
ZVAL_STRINGL(&z_fun_sadd, "SADD", 4);
ZVAL_STRINGL(&z_args[0], PHPREDIS_INDEX_NAME, sizeof(PHPREDIS_INDEX_NAME) - 1);
ZVAL_STRINGL(&z_args[1], key, key_len);
/* run SADD */
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun_sadd, &z_ret, 2, z_args);
zval_dtor(&z_fun_sadd);
zval_dtor(&z_args[1]);
zval_dtor(&z_args[0]);
zval_dtor(&z_ret);
}
void
ra_index_exec(zval *z_redis, zval *return_value, int keep_all) {
zval z_fun_exec, z_ret, *zp_tmp;
/* run EXEC */
ZVAL_STRINGL(&z_fun_exec, "EXEC", 4);
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun_exec, &z_ret, 0, NULL);
zval_dtor(&z_fun_exec);
/* extract first element of exec array and put into return_value. */
if(Z_TYPE(z_ret) == IS_ARRAY) {
if(return_value) {
if(keep_all) {
zp_tmp = &z_ret;
RETVAL_ZVAL(zp_tmp, 1, 0);
} else if ((zp_tmp = zend_hash_index_find(Z_ARRVAL(z_ret), 0)) != NULL) {
RETVAL_ZVAL(zp_tmp, 1, 0);
}
}
}
zval_dtor(&z_ret);
/* zval *zptr = &z_ret; */
/* php_var_dump(&zptr, 0); */
}
void
ra_index_discard(zval *z_redis, zval *return_value) {
zval z_fun_discard, z_ret;
/* run DISCARD */
ZVAL_STRINGL(&z_fun_discard, "DISCARD", 7);
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun_discard, &z_ret, 0, NULL);
zval_dtor(&z_fun_discard);
zval_dtor(&z_ret);
}
void
ra_index_unwatch(zval *z_redis, zval *return_value) {
zval z_fun_unwatch, z_ret;
/* run UNWATCH */
ZVAL_STRINGL(&z_fun_unwatch, "UNWATCH", 7);
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun_unwatch, &z_ret, 0, NULL);
zval_dtor(&z_fun_unwatch);
zval_dtor(&z_ret);
}
zend_bool
ra_is_write_cmd(RedisArray *ra, const char *cmd, int cmd_len) {
zend_bool ret;
int i;
char *cmd_up = emalloc(1 + cmd_len);
/* convert to uppercase */
for(i = 0; i < cmd_len; ++i)
cmd_up[i] = toupper(cmd[i]);
cmd_up[cmd_len] = 0;
ret = zend_hash_str_exists(ra->pure_cmds, cmd_up, cmd_len);
efree(cmd_up);
return !ret;
}
/* run TYPE to find the type */
static zend_bool
ra_get_key_type(zval *z_redis, const char *key, int key_len, zval *z_from, long *res) {
int i = 0;
zval z_fun, z_ret, z_arg, *z_data;
long success = 1;
/* Pipelined */
ra_index_multi(z_from, PIPELINE);
/* prepare args */
ZVAL_STRINGL(&z_arg, key, key_len);
/* run TYPE */
ZVAL_NULL(&z_ret);
ZVAL_STRINGL(&z_fun, "TYPE", 4);
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun, &z_ret, 1, &z_arg);
zval_dtor(&z_fun);
zval_dtor(&z_ret);
/* run TYPE */
ZVAL_NULL(&z_ret);
ZVAL_STRINGL(&z_fun, "TTL", 3);
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun, &z_ret, 1, &z_arg);
zval_dtor(&z_fun);
zval_dtor(&z_ret);
/* Get the result from the pipeline. */
ra_index_exec(z_from, &z_ret, 1);
if (Z_TYPE(z_ret) == IS_ARRAY) {
ZEND_HASH_FOREACH_VAL(Z_ARRVAL(z_ret), z_data) {
if (z_data == NULL || Z_TYPE_P(z_data) != IS_LONG) {
success = 0;
break;
}
/* Get the result - Might change in the future to handle doubles as well */
res[i++] = Z_LVAL_P(z_data);
} ZEND_HASH_FOREACH_END();
}
zval_dtor(&z_arg);
zval_dtor(&z_ret);
return success;
}
/* delete key from source server index during rehashing */
static void
ra_remove_from_index(zval *z_redis, const char *key, int key_len) {
zval z_fun_srem, z_ret, z_args[2];
/* run SREM on source index */
ZVAL_STRINGL(&z_fun_srem, "SREM", 4);
ZVAL_STRINGL(&z_args[0], PHPREDIS_INDEX_NAME, sizeof(PHPREDIS_INDEX_NAME) - 1);
ZVAL_STRINGL(&z_args[1], key, key_len);
ra_call_user_function(&redis_ce->function_table, z_redis, &z_fun_srem, &z_ret, 2, z_args);
/* cleanup */
zval_dtor(&z_fun_srem);
zval_dtor(&z_args[1]);
zval_dtor(&z_args[0]);
zval_dtor(&z_ret);
}
/* delete key from source server during rehashing */
static zend_bool
ra_del_key(const char *key, int key_len, zval *z_from) {
zval z_fun_del, z_ret, z_args[1];
/* in a transaction */
ra_index_multi(z_from, MULTI);
/* run DEL on source */
ZVAL_STRINGL(&z_fun_del, "DEL", 3);
ZVAL_STRINGL(&z_args[0], key, key_len);
ra_call_user_function(&redis_ce->function_table, z_from, &z_fun_del, &z_ret, 1, z_args);
zval_dtor(&z_fun_del);
zval_dtor(&z_args[0]);
zval_dtor(&z_ret);
/* remove key from index */
ra_remove_from_index(z_from, key, key_len);
/* close transaction */
ra_index_exec(z_from, NULL, 0);
return 1;
}
static zend_bool
ra_expire_key(const char *key, int key_len, zval *z_to, long ttl) {
zval z_fun_expire, z_ret, z_args[2];
if (ttl > 0)
{
/* run EXPIRE on target */
ZVAL_STRINGL(&z_fun_expire, "EXPIRE", 6);
ZVAL_STRINGL(&z_args[0], key, key_len);
ZVAL_LONG(&z_args[1], ttl);
ra_call_user_function(&redis_ce->function_table, z_to, &z_fun_expire, &z_ret, 2, z_args);
zval_dtor(&z_fun_expire);
zval_dtor(&z_args[0]);
zval_dtor(&z_ret);
}
return 1;
}
static zend_bool
ra_move_zset(const char *key, int key_len, zval *z_from, zval *z_to, long ttl) {
zval z_fun_zrange, z_fun_zadd, z_ret, z_ret_dest, z_args[4], *z_zadd_args, *z_score_p;
int i, count;
HashTable *h_zset_vals;
zend_string *zkey;
zend_ulong idx;
/* run ZRANGE key 0 -1 WITHSCORES on source */
ZVAL_STRINGL(&z_fun_zrange, "ZRANGE", 6);
ZVAL_STRINGL(&z_args[0], key, key_len);
ZVAL_STRINGL(&z_args[1], "0", 1);
ZVAL_STRINGL(&z_args[2], "-1", 2);
ZVAL_BOOL(&z_args[3], 1);
ra_call_user_function(&redis_ce->function_table, z_from, &z_fun_zrange, &z_ret, 4, z_args);
zval_dtor(&z_fun_zrange);
zval_dtor(&z_args[2]);
zval_dtor(&z_args[1]);
zval_dtor(&z_args[0]);
if(Z_TYPE(z_ret) != IS_ARRAY) { /* key not found or replaced */
/* TODO: report? */
zval_dtor(&z_ret);
return 0;
}
/* we now have an array of value → score pairs in z_ret. */
h_zset_vals = Z_ARRVAL(z_ret);
/* allocate argument array for ZADD */
count = zend_hash_num_elements(h_zset_vals);
z_zadd_args = ecalloc((1 + 2*count), sizeof(zval));
ZVAL_STRINGL(&z_zadd_args[0], key, key_len);
i = 1;
ZEND_HASH_FOREACH_KEY_VAL(h_zset_vals, idx, zkey, z_score_p) {
/* add score */
ZVAL_DOUBLE(&z_zadd_args[i], Z_DVAL_P(z_score_p));
/* add value */
if (zkey) {
ZVAL_STRINGL(&z_zadd_args[i+1], ZSTR_VAL(zkey), ZSTR_LEN(zkey));
} else {
ZVAL_LONG(&z_zadd_args[i+1], (long)idx);
}
i += 2;
} ZEND_HASH_FOREACH_END();
/* run ZADD on target */
ZVAL_STRINGL(&z_fun_zadd, "ZADD", 4);
ra_call_user_function(&redis_ce->function_table, z_to, &z_fun_zadd, &z_ret_dest, 1 + 2 * count, z_zadd_args);
/* Expire if needed */
ra_expire_key(key, key_len, z_to, ttl);
/* cleanup */
zval_dtor(&z_fun_zadd);
zval_dtor(&z_ret_dest);
zval_dtor(&z_ret);
/* Free the array itself */
for (i = 0; i < 1 + 2 * count; i++) {
zval_dtor(&z_zadd_args[i]);
}
efree(z_zadd_args);
return 1;
}
static zend_bool
ra_move_string(const char *key, int key_len, zval *z_from, zval *z_to, long ttl) {
zval z_fun_get, z_fun_set, z_ret, z_args[3];
/* run GET on source */
ZVAL_STRINGL(&z_fun_get, "GET", 3);
ZVAL_STRINGL(&z_args[0], key, key_len);
ra_call_user_function(&redis_ce->function_table, z_from, &z_fun_get, &z_ret, 1, z_args);
zval_dtor(&z_fun_get);
if(Z_TYPE(z_ret) != IS_STRING) { /* key not found or replaced */
/* TODO: report? */
zval_dtor(&z_args[0]);
zval_dtor(&z_ret);
return 0;
}
/* run SET on target */
if (ttl > 0) {
ZVAL_STRINGL(&z_fun_set, "SETEX", 5);
ZVAL_LONG(&z_args[1], ttl);
ZVAL_STRINGL(&z_args[2], Z_STRVAL(z_ret), Z_STRLEN(z_ret)); /* copy z_ret to arg 1 */
zval_dtor(&z_ret); /* free memory from our previous call */
ra_call_user_function(&redis_ce->function_table, z_to, &z_fun_set, &z_ret, 3, z_args);
/* cleanup */