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php_memcached.c
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/*
+----------------------------------------------------------------------+
| Copyright (c) 2009-2010 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 |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Andrei Zmievski <[email protected]> |
+----------------------------------------------------------------------+
*/
/* $ Id: $ */
/* TODO
* - set LIBKETAMA_COMPATIBLE as the default?
* - fix unserialize(serialize($memc))
* - ability to set binary protocol for sessions
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <php.h>
#include <php_main.h>
#ifdef ZTS
#include "TSRM.h"
#endif
#include <php_ini.h>
#include <SAPI.h>
#include <ext/standard/info.h>
#include <zend_extensions.h>
#include <zend_exceptions.h>
#include <ext/standard/php_smart_str.h>
#include <ext/standard/php_var.h>
#include <ext/standard/basic_functions.h>
#include <libmemcached/memcached.h>
#include "php_libmemcached_compat.h"
#include "php_memcached.h"
#include "g_fmt.h"
#ifdef HAVE_MEMCACHED_SESSION
# include "php_memcached_session.h"
#endif
#include "fastlz/fastlz.h"
#include <zlib.h>
/* Used to store the size of the block */
#if defined(HAVE_INTTYPES_H)
#include <inttypes.h>
#elif defined(HAVE_STDINT_H)
#include <stdint.h>
#endif
#ifdef PHP_WIN32
# include "win32/php_stdint.h"
#else
# ifndef HAVE_INT32_T
# if SIZEOF_INT == 4
typedef int int32_t;
# elif SIZEOF_LONG == 4
typedef long int int32_t;
# endif
# endif
# ifndef HAVE_UINT32_T
# if SIZEOF_INT == 4
typedef unsigned int uint32_t;
# elif SIZEOF_LONG == 4
typedef unsigned long int uint32_t;
# endif
# endif
#endif
#ifdef HAVE_JSON_API
# include "ext/json/php_json.h"
#endif
#ifdef HAVE_MEMCACHED_IGBINARY
# include "ext/igbinary/igbinary.h"
#endif
/*
* This is needed because PHP 5.3.[01] does not install JSON_parser.h by default. This
* constant will move into php_json.h in the future anyway.
*/
#ifndef JSON_PARSER_DEFAULT_DEPTH
#define JSON_PARSER_DEFAULT_DEPTH 512
#endif
/****************************************
Custom options
****************************************/
#define MEMC_OPT_COMPRESSION -1001
#define MEMC_OPT_PREFIX_KEY -1002
#define MEMC_OPT_SERIALIZER -1003
#define MEMC_OPT_COMPRESSION_TYPE -1004
/****************************************
Custom result codes
****************************************/
#define MEMC_RES_PAYLOAD_FAILURE -1001
/****************************************
Payload value flags
****************************************/
#define MEMC_VAL_TYPE_MASK 0xf
#define MEMC_VAL_GET_TYPE(flags) ((flags) & MEMC_VAL_TYPE_MASK)
#define MEMC_VAL_SET_TYPE(flags, type) ((flags) |= ((type) & MEMC_VAL_TYPE_MASK))
#define MEMC_VAL_IS_STRING 0
#define MEMC_VAL_IS_LONG 1
#define MEMC_VAL_IS_DOUBLE 2
#define MEMC_VAL_IS_BOOL 3
#define MEMC_VAL_IS_SERIALIZED 4
#define MEMC_VAL_IS_IGBINARY 5
#define MEMC_VAL_IS_JSON 6
#define MEMC_VAL_COMPRESSED (1<<4)
#define MEMC_VAL_COMPRESSION_ZLIB (1<<5)
#define MEMC_VAL_COMPRESSION_FASTLZ (1<<6)
/****************************************
"get" operation flags
****************************************/
#define MEMC_GET_PRESERVE_ORDER (1<<0)
/****************************************
Helper macros
****************************************/
#define MEMC_METHOD_INIT_VARS \
zval* object = getThis(); \
php_memc_t* i_obj = NULL; \
struct memc_obj* m_obj = NULL;
#define MEMC_METHOD_FETCH_OBJECT \
i_obj = (php_memc_t *) zend_object_store_get_object( object TSRMLS_CC ); \
m_obj = i_obj->obj; \
if (!m_obj) { \
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Memcached constructor was not called"); \
return; \
}
#define RETURN_FROM_GET RETURN_FALSE
/****************************************
Structures and definitions
****************************************/
enum memcached_compression_type {
COMPRESSION_TYPE_ZLIB = 1,
COMPRESSION_TYPE_FASTLZ = 2,
};
typedef struct {
zend_object zo;
struct memc_obj {
memcached_st *memc;
zend_bool compression;
enum memcached_serializer serializer;
enum memcached_compression_type compression_type;
#if HAVE_MEMCACHED_SASL
zend_bool has_sasl_data;
#endif
} *obj;
zend_bool is_persistent;
zend_bool is_pristine;
int rescode;
int memc_errno;
} php_memc_t;
enum {
MEMC_OP_SET,
MEMC_OP_ADD,
MEMC_OP_REPLACE,
MEMC_OP_APPEND,
MEMC_OP_PREPEND
};
static zend_class_entry *memcached_ce = NULL;
static zend_class_entry *memcached_exception_ce = NULL;
static zend_object_handlers memcached_object_handlers;
struct callbackContext
{
zval *array;
zval *entry;
memcached_stat_st *stats; /* for use with functions that need stats */
void *return_value;
unsigned int i; /* for use with structures mapped against servers */
};
#if HAVE_SPL
static zend_class_entry *spl_ce_RuntimeException = NULL;
#endif
#if (PHP_MAJOR_VERSION == 5 && PHP_MINOR_VERSION < 3)
const zend_fcall_info empty_fcall_info = { 0, NULL, NULL, NULL, NULL, 0, NULL, NULL, 0 };
#undef ZEND_BEGIN_ARG_INFO_EX
#define ZEND_BEGIN_ARG_INFO_EX(name, pass_rest_by_reference, return_reference, required_num_args) \
static zend_arg_info name[] = { \
{ NULL, 0, NULL, 0, 0, 0, pass_rest_by_reference, return_reference, required_num_args },
#endif
ZEND_DECLARE_MODULE_GLOBALS(php_memcached)
#ifdef COMPILE_DL_MEMCACHED
ZEND_GET_MODULE(memcached)
#endif
static PHP_INI_MH(OnUpdateCompressionType)
{
if (!new_value) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(new_value, "fastlz")) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_FASTLZ;
} else if (!strcmp(new_value, "zlib")) {
MEMC_G(compression_type_real) = COMPRESSION_TYPE_ZLIB;
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}
static PHP_INI_MH(OnUpdateSerializer)
{
if (!new_value) {
MEMC_G(serializer) = SERIALIZER_DEFAULT;
} else if (!strcmp(new_value, "php")) {
MEMC_G(serializer) = SERIALIZER_PHP;
#ifdef HAVE_MEMCACHE_IGBINARY
} else if (!strcmp(new_value, "igbinary")) {
MEMC_G(serializer) = SERIALIZER_IGBINARY;
#endif // IGBINARY
#ifdef HAVE_JSON_API
} else if (!strcmp(new_value, "json")) {
MEMC_G(serializer) = SERIALIZER_JSON;
} else if (!strcmp(new_value, "json_array")) {
MEMC_G(serializer) = SERIALIZER_JSON_ARRAY;
#endif // JSON
} else {
return FAILURE;
}
return OnUpdateString(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC);
}
/* {{{ INI entries */
PHP_INI_BEGIN()
#ifdef HAVE_MEMCACHED_SESSION
STD_PHP_INI_ENTRY("memcached.sess_locking", "1", PHP_INI_ALL, OnUpdateBool, sess_locking_enabled, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_lock_wait", "150000", PHP_INI_ALL, OnUpdateLongGEZero,sess_lock_wait, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.sess_prefix", "memc.sess.key.", PHP_INI_ALL, OnUpdateString, sess_prefix, zend_php_memcached_globals, php_memcached_globals)
#endif
STD_PHP_INI_ENTRY("memcached.compression_type", "fastlz", PHP_INI_ALL, OnUpdateCompressionType, compression_type, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.compression_factor", "1.3", PHP_INI_ALL, OnUpdateReal, compression_factor, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.compression_threshold", "2000", PHP_INI_ALL, OnUpdateLong, compression_threshold, zend_php_memcached_globals, php_memcached_globals)
STD_PHP_INI_ENTRY("memcached.serializer", SERIALIZER_DEFAULT_NAME, PHP_INI_ALL, OnUpdateSerializer, serializer_name, zend_php_memcached_globals, php_memcached_globals)
#if HAVE_MEMCACHED_SASL
STD_PHP_INI_ENTRY("memcached.use_sasl", "0", PHP_INI_SYSTEM, OnUpdateBool, use_sasl, zend_php_memcached_globals, php_memcached_globals)
#endif
PHP_INI_END()
/* }}} */
/****************************************
Forward declarations
****************************************/
static int php_memc_handle_error(php_memc_t *i_obj, memcached_return status TSRMLS_DC);
static char *php_memc_zval_to_payload(zval *value, size_t *payload_len, uint32_t *flags, enum memcached_serializer serializer, enum memcached_compression_type compression_type TSRMLS_DC);
static int php_memc_zval_from_payload(zval *value, char *payload, size_t payload_len, uint32_t flags, enum memcached_serializer serializer TSRMLS_DC);
static void php_memc_get_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_store_impl(INTERNAL_FUNCTION_PARAMETERS, int op, zend_bool by_key);
static void php_memc_setMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_delete_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_deleteMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static void php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key);
static memcached_return php_memc_do_cache_callback(zval *memc_obj, zend_fcall_info *fci, zend_fcall_info_cache *fcc, char *key, size_t key_len, zval *value TSRMLS_DC);
static int php_memc_do_result_callback(zval *memc_obj, zend_fcall_info *fci, zend_fcall_info_cache *fcc, memcached_result_st *result TSRMLS_DC);
static memcached_return php_memc_do_serverlist_callback(const memcached_st *ptr, memcached_server_instance_st instance, void *in_context);
static memcached_return php_memc_do_stats_callback(const memcached_st *ptr, memcached_server_instance_st instance, void *in_context);
static memcached_return php_memc_do_version_callback(const memcached_st *ptr, memcached_server_instance_st instance, void *in_context);
static void php_memc_destroy(struct memc_obj *m_obj, zend_bool persistent TSRMLS_DC);
/****************************************
Utility functions
****************************************/
static inline zval *cas_to_zval(zval *z, uint64_t cas TSRMLS_DC) {
#if SIZEOF_LONG >= 8
ZVAL_LONG(z, cas);
#elif SIZEOF_LONG == 4 && SIZEOF_LONG_LONG == 8
char *str = (char *)emalloc(21);
int len;
len = slprintf(str, 21, "%lld", (unsigned long long)cas);
ZVAL_STRINGL(z, str, len, 0);
#else
#error Strange long and/or long long size
#endif
return z;
}
static inline uint64_t zval_to_cas(zval *z TSRMLS_DC) {
if (Z_TYPE_P(z) == IS_LONG) {
return (uint64_t)Z_LVAL_P(z);
} else if (Z_TYPE_P(z) == IS_STRING && Z_STRLEN_P(z) > 0) {
char *end;
long long cas = strtoll(Z_STRVAL_P(z), &end, 10);
if (cas == LLONG_MAX && errno == ERANGE) {
return 0;
}
if (end != Z_STRVAL_P(z) + Z_STRLEN_P(z)) {
errno = ERANGE;
return 0;
}
return (uint64_t)cas;
} else {
errno = ERANGE;
return 0;
}
}
/****************************************
Method implementations
****************************************/
static zend_bool php_memcached_on_new_callback(zval *object, zend_fcall_info *fci, zend_fcall_info_cache *fci_cache, char *persistent_id, int persistent_id_len TSRMLS_DC)
{
zval pid_z;
zval *retval_ptr, *pid_z_ptr = &pid_z;
zval **params[2];
INIT_ZVAL(pid_z);
if (persistent_id) {
ZVAL_STRINGL(pid_z_ptr, persistent_id, persistent_id_len, 1);
}
/* Call the cb */
params[0] = &object;
params[1] = &pid_z_ptr;
fci->params = params;
fci->param_count = 2;
fci->retval_ptr_ptr = &retval_ptr;
fci->no_separation = 1;
if (zend_call_function(fci, fci_cache TSRMLS_CC) == FAILURE) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Failed to invoke 'on_new' callback %s()", Z_STRVAL_P(fci->function_name));
return 0;
}
zval_dtor(pid_z_ptr);
if (retval_ptr) {
zval_ptr_dtor(&retval_ptr);
}
return 1;
}
static int le_memc, le_memc_sess;
static int php_memc_list_entry(void)
{
return le_memc;
}
/* {{{ Memcached::__construct([string persistent_id[, callback on_new[, string connection_str]]]))
Creates a Memcached object, optionally using persistent memcache connection */
static PHP_METHOD(Memcached, __construct)
{
zval *object = getThis();
php_memc_t *i_obj;
struct memc_obj *m_obj = NULL;
char *persistent_id = NULL, *conn_str = NULL;
int persistent_id_len, conn_str_len;
zend_bool is_persistent = 0;
char *plist_key = NULL;
int plist_key_len = 0;
zend_fcall_info fci = {0};
zend_fcall_info_cache fci_cache;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s!f!s", &persistent_id, &persistent_id_len, &fci, &fci_cache, &conn_str, &conn_str_len) == FAILURE) {
ZVAL_NULL(object);
return;
}
i_obj = (php_memc_t *) zend_object_store_get_object(object TSRMLS_CC);
i_obj->is_pristine = 0;
if (persistent_id && *persistent_id) {
zend_rsrc_list_entry *le = NULL;
is_persistent = 1;
plist_key_len = spprintf(&plist_key, 0, "memcached:id=%s", persistent_id);
plist_key_len += 1;
if (zend_hash_find(&EG(persistent_list), plist_key, plist_key_len, (void *)&le) == SUCCESS) {
if (le->type == php_memc_list_entry()) {
m_obj = (struct memc_obj *) le->ptr;
}
}
i_obj->obj = m_obj;
}
i_obj->is_persistent = is_persistent;
if (!m_obj) {
m_obj = pecalloc(1, sizeof(*m_obj), is_persistent);
if (m_obj == NULL) {
if (plist_key) {
efree(plist_key);
}
php_error_docref(NULL TSRMLS_CC, E_ERROR, "out of memory: cannot allocate handle");
/* not reached */
}
if (conn_str) {
m_obj->memc = memcached(conn_str, conn_str_len);
if (!m_obj->memc) {
char error_buffer[1024];
if (plist_key) {
efree(plist_key);
}
if (libmemcached_check_configuration(conn_str, conn_str_len, error_buffer, sizeof(error_buffer)) != MEMCACHED_SUCCESS) {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "configuration error %s", error_buffer);
} else {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "could not allocate libmemcached structure");
}
/* not reached */
}
} else {
m_obj->memc = memcached_create(NULL);
if (m_obj->memc == NULL) {
if (plist_key) {
efree(plist_key);
}
php_error_docref(NULL TSRMLS_CC, E_ERROR, "could not allocate libmemcached structure");
/* not reached */
}
}
m_obj->serializer = MEMC_G(serializer);
m_obj->compression_type = MEMC_G(compression_type_real);
m_obj->compression = 1;
i_obj->obj = m_obj;
i_obj->is_pristine = 1;
if (fci.size) { /* will be 0 when not available */
if (!php_memcached_on_new_callback(object, &fci, &fci_cache, persistent_id, persistent_id_len TSRMLS_CC) || EG(exception)) {
/* error calling or exception thrown from callback */
if (plist_key) {
efree(plist_key);
}
i_obj->obj = NULL;
if (is_persistent) {
php_memc_destroy(m_obj, is_persistent TSRMLS_CC);
}
return;
}
}
if (is_persistent) {
zend_rsrc_list_entry le;
le.type = php_memc_list_entry();
le.ptr = m_obj;
if (zend_hash_update(&EG(persistent_list), (char *)plist_key,
plist_key_len, (void *)&le, sizeof(le), NULL) == FAILURE) {
if (plist_key) {
efree(plist_key);
}
php_error_docref(NULL TSRMLS_CC, E_ERROR, "could not register persistent entry");
/* not reached */
}
}
}
if (plist_key) {
efree(plist_key);
}
}
/* }}} */
/* {{{ Memcached::get(string key [, mixed callback [, mixed &cas_token ] ])
Returns a value for the given key or false */
PHP_METHOD(Memcached, get)
{
php_memc_get_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getByKey(string server_key, string key [, mixed callback [, mixed &cas_token ] ])
Returns a value for key from the server identified by the server key or false */
PHP_METHOD(Memcached, getByKey)
{
php_memc_get_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_get_impl */
static void php_memc_get_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
char *key = NULL;
int key_len = 0;
char *server_key = NULL;
int server_key_len = 0;
char *payload = NULL;
size_t payload_len = 0;
uint32_t flags = 0;
uint64_t cas = 0;
const char* keys[1] = { NULL };
size_t key_lens[1] = { 0 };
zval *cas_token = NULL;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fcc = empty_fcall_info_cache;
memcached_result_st result;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|f!z", &server_key,
&server_key_len, &key, &key_len, &fci, &fcc, &cas_token) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|f!z", &key, &key_len,
&fci, &fcc, &cas_token) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
if (key_len == 0) {
i_obj->rescode = MEMCACHED_BAD_KEY_PROVIDED;
RETURN_FROM_GET;
}
keys[0] = key;
key_lens[0] = key_len;
if (cas_token) {
uint64_t orig_cas_flag;
/*
* Enable CAS support, but only if it is currently disabled.
*/
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, keys, key_lens, 1);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
RETURN_FROM_GET;
}
status = MEMCACHED_SUCCESS;
memcached_result_create(m_obj->memc, &result);
if (memcached_fetch_result(m_obj->memc, &result, &status) == NULL) {
/* This is for historical reasons */
if (status == MEMCACHED_END)
status = MEMCACHED_NOTFOUND;
/*
* If the result wasn't found, and we have the read-through callback, invoke
* it to get the value. The CAS token will be untouched.
*/
if (status == MEMCACHED_NOTFOUND && fci.size != 0) {
status = php_memc_do_cache_callback(getThis(), &fci, &fcc, key, key_len,
return_value TSRMLS_CC);
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
memcached_result_free(&result);
RETURN_FROM_GET;
}
/* if we have a callback, all processing is done */
if (fci.size != 0) {
memcached_result_free(&result);
return;
}
}
payload = memcached_result_value(&result);
payload_len = memcached_result_length(&result);
flags = memcached_result_flags(&result);
cas = memcached_result_cas(&result);
if (php_memc_zval_from_payload(return_value, payload, payload_len, flags, m_obj->serializer TSRMLS_CC) < 0) {
memcached_result_free(&result);
i_obj->rescode = MEMC_RES_PAYLOAD_FAILURE;
RETURN_FROM_GET;
}
zval_dtor(cas_token);
cas_to_zval(cas_token, cas TSRMLS_CC);
memcached_result_free(&result);
} else {
int rc;
zend_bool return_value_set = 0;
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, keys, key_lens, 1);
payload = memcached_fetch(m_obj->memc, NULL, NULL, &payload_len, &flags, &status);
/* This is for historical reasons */
if (status == MEMCACHED_END)
status = MEMCACHED_NOTFOUND;
/*
* If payload wasn't found and we have a read-through callback, invoke it to get
* the value. The callback will take care of storing the value back into memcache.
* The callback will set the return value.
*/
if (payload == NULL && status == MEMCACHED_NOTFOUND && fci.size != 0) {
size_t dummy_length;
uint32_t dummy_flags;
memcached_return dummy_status;
status = php_memc_do_cache_callback(getThis(), &fci, &fcc, key, key_len,
return_value TSRMLS_CC);
return_value_set = 1;
(void)memcached_fetch(m_obj->memc, NULL, NULL, &dummy_length, &dummy_flags, &dummy_status);
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
if (payload) {
free(payload);
}
RETURN_FROM_GET;
}
/* if memcached gave a value and there was no callback, payload may be NULL */
if (!return_value_set) {
rc = php_memc_zval_from_payload(return_value, payload, payload_len, flags, m_obj->serializer TSRMLS_CC);
free(payload);
if (rc < 0) {
i_obj->rescode = MEMC_RES_PAYLOAD_FAILURE;
RETURN_FROM_GET;
}
}
}
}
/* }}} */
/* {{{ Memcached::getMulti(array keys [, array &cas_tokens ])
Returns values for the given keys or false */
PHP_METHOD(Memcached, getMulti)
{
php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getMultiByKey(string server_key, array keys [, array &cas_tokens ])
Returns values for the given keys from the server identified by the server key or false */
PHP_METHOD(Memcached, getMultiByKey)
{
php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_getMulti_impl */
static void php_memc_getMulti_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
zval *keys = NULL;
char *server_key = NULL;
int server_key_len = 0;
size_t num_keys = 0;
zval **entry = NULL;
char *payload = NULL;
size_t payload_len = 0;
const char **mkeys = NULL;
size_t *mkeys_len = NULL;
char *res_key = NULL;
size_t res_key_len = 0;
uint32_t flags;
uint64_t cas = 0;
zval *cas_tokens = NULL;
uint64_t orig_cas_flag;
zval *value;
long get_flags = 0;
int i = 0;
zend_bool preserve_order;
memcached_result_st result;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sa/|zl", &server_key,
&server_key_len, &keys, &cas_tokens, &get_flags) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a/|zl", &keys, &cas_tokens, &get_flags) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
preserve_order = (get_flags & MEMC_GET_PRESERVE_ORDER);
num_keys = zend_hash_num_elements(Z_ARRVAL_P(keys));
mkeys = safe_emalloc(num_keys, sizeof(*mkeys), 0);
mkeys_len = safe_emalloc(num_keys, sizeof(*mkeys_len), 0);
array_init(return_value);
/*
* Create the array of keys for libmemcached. If none of the keys were valid
* (strings), set bad key result code and return.
*/
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(keys));
zend_hash_get_current_data(Z_ARRVAL_P(keys), (void**)&entry) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(keys))) {
if (Z_TYPE_PP(entry) != IS_STRING) {
convert_to_string_ex(entry);
}
if (Z_TYPE_PP(entry) == IS_STRING && Z_STRLEN_PP(entry) > 0) {
mkeys[i] = Z_STRVAL_PP(entry);
mkeys_len[i] = Z_STRLEN_PP(entry);
if (preserve_order) {
add_assoc_null_ex(return_value, mkeys[i], mkeys_len[i] + 1);
}
i++;
}
}
if (i == 0) {
i_obj->rescode = MEMCACHED_NOTFOUND;
efree(mkeys);
efree(mkeys_len);
return;
}
/*
* Enable CAS support, but only if it is currently disabled.
*/
if (cas_tokens) {
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
}
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, mkeys, mkeys_len, i);
/* Handle error, but ignore, there might still be some result */
php_memc_handle_error(i_obj, status TSRMLS_CC);
/*
* Restore the CAS support flag, but only if we had to turn it on.
*/
if (cas_tokens && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
efree(mkeys);
efree(mkeys_len);
/*
* Iterate through the result set and create the result array. The CAS tokens are
* returned as strings, because we cannot store potential 64b values in 32b longs.
*/
if (cas_tokens) {
zval_dtor(cas_tokens);
array_init(cas_tokens);
}
memcached_result_create(m_obj->memc, &result);
while ((memcached_fetch_result(m_obj->memc, &result, &status)) != NULL) {
if (status != MEMCACHED_SUCCESS) {
status = MEMCACHED_SOME_ERRORS;
php_memc_handle_error(i_obj, status TSRMLS_CC);
continue;
}
payload = memcached_result_value(&result);
payload_len = memcached_result_length(&result);
flags = memcached_result_flags(&result);
res_key = memcached_result_key_value(&result);
res_key_len = memcached_result_key_length(&result);
/*
* This may be a bug in libmemcached, the key is not null terminated
* whe using the binary protocol.
*/
res_key[res_key_len] = 0;
MAKE_STD_ZVAL(value);
if (php_memc_zval_from_payload(value, payload, payload_len, flags, m_obj->serializer TSRMLS_CC) < 0) {
zval_ptr_dtor(&value);
if (EG(exception)) {
status = MEMC_RES_PAYLOAD_FAILURE;
php_memc_handle_error(i_obj, status TSRMLS_CC);
memcached_quit(m_obj->memc);
break;
}
status = MEMCACHED_SOME_ERRORS;
i_obj->rescode = MEMCACHED_SOME_ERRORS;
continue;
}
add_assoc_zval_ex(return_value, res_key, res_key_len+1, value);
if (cas_tokens) {
zval *zcas;
MAKE_STD_ZVAL(zcas);
cas = memcached_result_cas(&result);
cas_to_zval(zcas, cas TSRMLS_CC);
add_assoc_zval_ex(cas_tokens, res_key, res_key_len + 1, zcas);
}
}
memcached_result_free(&result);
if (EG(exception)) {
/* XXX: cas_tokens should only be set on success, currently we're destructive */
if (cas_tokens) {
zval_dtor(cas_tokens);
ZVAL_NULL(cas_tokens);
}
zval_dtor(return_value);
RETURN_FALSE;
}
}
/* }}} */
/* {{{ Memcached::getDelayed(array keys [, bool with_cas [, mixed callback ] ])
Sends a request for the given keys and returns immediately */
PHP_METHOD(Memcached, getDelayed)
{
php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ Memcached::getDelayedByKey(string server_key, array keys [, bool with_cas [, mixed callback ] ])
Sends a request for the given keys from the server identified by the server key and returns immediately */
PHP_METHOD(Memcached, getDelayedByKey)
{
php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ -- php_memc_getDelayed_impl */
static void php_memc_getDelayed_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool by_key)
{
zval *keys = NULL;
char *server_key = NULL;
int server_key_len = 0;
zend_bool with_cas = 0;
size_t num_keys = 0;
zval **entry = NULL;
const char **mkeys = NULL;
size_t *mkeys_len = NULL;
uint64_t orig_cas_flag;
zend_fcall_info fci = empty_fcall_info;
zend_fcall_info_cache fcc = empty_fcall_info_cache;
int i = 0;
memcached_return status = MEMCACHED_SUCCESS;
MEMC_METHOD_INIT_VARS;
if (by_key) {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sa/|bf!", &server_key,
&server_key_len, &keys, &with_cas, &fci, &fcc) == FAILURE) {
return;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "a/|bf!", &keys, &with_cas,
&fci, &fcc) == FAILURE) {
return;
}
}
MEMC_METHOD_FETCH_OBJECT;
i_obj->rescode = MEMCACHED_SUCCESS;
/*
* Create the array of keys for libmemcached. If none of the keys were valid
* (strings), set bad key result code and return.
*/
num_keys = zend_hash_num_elements(Z_ARRVAL_P(keys));
mkeys = safe_emalloc(num_keys, sizeof(*mkeys), 0);
mkeys_len = safe_emalloc(num_keys, sizeof(*mkeys_len), 0);
for (zend_hash_internal_pointer_reset(Z_ARRVAL_P(keys));
zend_hash_get_current_data(Z_ARRVAL_P(keys), (void**)&entry) == SUCCESS;
zend_hash_move_forward(Z_ARRVAL_P(keys))) {
if (Z_TYPE_PP(entry) != IS_STRING) {
convert_to_string_ex(entry);
}
if (Z_TYPE_PP(entry) == IS_STRING && Z_STRLEN_PP(entry) > 0) {
mkeys[i] = Z_STRVAL_PP(entry);
mkeys_len[i] = Z_STRLEN_PP(entry);
i++;
}
}
if (i == 0) {
i_obj->rescode = MEMCACHED_BAD_KEY_PROVIDED;
efree(mkeys);
efree(mkeys_len);
zval_dtor(return_value);
RETURN_FALSE;
}
/*
* Enable CAS support, but only if it is currently disabled.
*/
if (with_cas) {
orig_cas_flag = memcached_behavior_get(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS);
if (orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, 1);
}
}
/*
* Issue the request, but collect results only if the result callback is provided.
*/
status = memcached_mget_by_key(m_obj->memc, server_key, server_key_len, mkeys, mkeys_len, i);
/*
* Restore the CAS support flag, but only if we had to turn it on.
*/
if (with_cas && orig_cas_flag == 0) {
memcached_behavior_set(m_obj->memc, MEMCACHED_BEHAVIOR_SUPPORT_CAS, orig_cas_flag);
}
efree(mkeys);
efree(mkeys_len);
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
zval_dtor(return_value);
RETURN_FALSE;
}
if (fci.size != 0) {
/*
* We have a result callback. Iterate through the result set and invoke the
* callback for each one.
*/
memcached_result_st result;
memcached_result_create(m_obj->memc, &result);
while ((memcached_fetch_result(m_obj->memc, &result, &status)) != NULL) {
if (php_memc_do_result_callback(getThis(), &fci, &fcc, &result TSRMLS_CC) < 0) {
status = MEMCACHED_FAILURE;
break;
}
}
memcached_result_free(&result);
/* we successfully retrieved all rows */
if (status == MEMCACHED_END) {
status = MEMCACHED_SUCCESS;
}
if (php_memc_handle_error(i_obj, status TSRMLS_CC) < 0) {
RETURN_FALSE;