Commit 7ee5a41a authored by michael-grunder's avatar michael-grunder
Browse files

Squashed 'deps/hiredis/' content from commit 39de5267c

git-subtree-dir: deps/hiredis
git-subtree-split: 39de5267c092859b4cab4bdf79081e9634b70e39
parents
/*
* Copyright (c) 2009-2011, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010-2011, Pieter Noordhuis <pcnoordhuis at gmail dot com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __HIREDIS_ASYNC_PRIVATE_H
#define __HIREDIS_ASYNC_PRIVATE_H
#define _EL_ADD_READ(ctx) \
do { \
refreshTimeout(ctx); \
if ((ctx)->ev.addRead) (ctx)->ev.addRead((ctx)->ev.data); \
} while (0)
#define _EL_DEL_READ(ctx) do { \
if ((ctx)->ev.delRead) (ctx)->ev.delRead((ctx)->ev.data); \
} while(0)
#define _EL_ADD_WRITE(ctx) \
do { \
refreshTimeout(ctx); \
if ((ctx)->ev.addWrite) (ctx)->ev.addWrite((ctx)->ev.data); \
} while (0)
#define _EL_DEL_WRITE(ctx) do { \
if ((ctx)->ev.delWrite) (ctx)->ev.delWrite((ctx)->ev.data); \
} while(0)
#define _EL_CLEANUP(ctx) do { \
if ((ctx)->ev.cleanup) (ctx)->ev.cleanup((ctx)->ev.data); \
ctx->ev.cleanup = NULL; \
} while(0);
static inline void refreshTimeout(redisAsyncContext *ctx) {
#define REDIS_TIMER_ISSET(tvp) \
(tvp && ((tvp)->tv_sec || (tvp)->tv_usec))
#define REDIS_EL_TIMER(ac, tvp) \
if ((ac)->ev.scheduleTimer && REDIS_TIMER_ISSET(tvp)) { \
(ac)->ev.scheduleTimer((ac)->ev.data, *(tvp)); \
}
if (ctx->c.flags & REDIS_CONNECTED) {
REDIS_EL_TIMER(ctx, ctx->c.command_timeout);
} else {
REDIS_EL_TIMER(ctx, ctx->c.connect_timeout);
}
}
void __redisAsyncDisconnect(redisAsyncContext *ac);
void redisProcessCallbacks(redisAsyncContext *ac);
#endif /* __HIREDIS_ASYNC_PRIVATE_H */
/* Hash table implementation.
*
* This file implements in memory hash tables with insert/del/replace/find/
* get-random-element operations. Hash tables will auto resize if needed
* tables of power of two in size are used, collisions are handled by
* chaining. See the source code for more information... :)
*
* Copyright (c) 2006-2010, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "fmacros.h"
#include "alloc.h"
#include <stdlib.h>
#include <assert.h>
#include <limits.h>
#include "dict.h"
/* -------------------------- private prototypes ---------------------------- */
static int _dictExpandIfNeeded(dict *ht);
static unsigned long _dictNextPower(unsigned long size);
static int _dictKeyIndex(dict *ht, const void *key);
static int _dictInit(dict *ht, dictType *type, void *privDataPtr);
/* -------------------------- hash functions -------------------------------- */
/* Generic hash function (a popular one from Bernstein).
* I tested a few and this was the best. */
static unsigned int dictGenHashFunction(const unsigned char *buf, int len) {
unsigned int hash = 5381;
while (len--)
hash = ((hash << 5) + hash) + (*buf++); /* hash * 33 + c */
return hash;
}
/* ----------------------------- API implementation ------------------------- */
/* Reset an hashtable already initialized with ht_init().
* NOTE: This function should only called by ht_destroy(). */
static void _dictReset(dict *ht) {
ht->table = NULL;
ht->size = 0;
ht->sizemask = 0;
ht->used = 0;
}
/* Create a new hash table */
static dict *dictCreate(dictType *type, void *privDataPtr) {
dict *ht = hi_malloc(sizeof(*ht));
if (ht == NULL)
return NULL;
_dictInit(ht,type,privDataPtr);
return ht;
}
/* Initialize the hash table */
static int _dictInit(dict *ht, dictType *type, void *privDataPtr) {
_dictReset(ht);
ht->type = type;
ht->privdata = privDataPtr;
return DICT_OK;
}
/* Expand or create the hashtable */
static int dictExpand(dict *ht, unsigned long size) {
dict n; /* the new hashtable */
unsigned long realsize = _dictNextPower(size), i;
/* the size is invalid if it is smaller than the number of
* elements already inside the hashtable */
if (ht->used > size)
return DICT_ERR;
_dictInit(&n, ht->type, ht->privdata);
n.size = realsize;
n.sizemask = realsize-1;
n.table = hi_calloc(realsize,sizeof(dictEntry*));
if (n.table == NULL)
return DICT_ERR;
/* Copy all the elements from the old to the new table:
* note that if the old hash table is empty ht->size is zero,
* so dictExpand just creates an hash table. */
n.used = ht->used;
for (i = 0; i < ht->size && ht->used > 0; i++) {
dictEntry *he, *nextHe;
if (ht->table[i] == NULL) continue;
/* For each hash entry on this slot... */
he = ht->table[i];
while(he) {
unsigned int h;
nextHe = he->next;
/* Get the new element index */
h = dictHashKey(ht, he->key) & n.sizemask;
he->next = n.table[h];
n.table[h] = he;
ht->used--;
/* Pass to the next element */
he = nextHe;
}
}
assert(ht->used == 0);
hi_free(ht->table);
/* Remap the new hashtable in the old */
*ht = n;
return DICT_OK;
}
/* Add an element to the target hash table */
static int dictAdd(dict *ht, void *key, void *val) {
int index;
dictEntry *entry;
/* Get the index of the new element, or -1 if
* the element already exists. */
if ((index = _dictKeyIndex(ht, key)) == -1)
return DICT_ERR;
/* Allocates the memory and stores key */
entry = hi_malloc(sizeof(*entry));
if (entry == NULL)
return DICT_ERR;
entry->next = ht->table[index];
ht->table[index] = entry;
/* Set the hash entry fields. */
dictSetHashKey(ht, entry, key);
dictSetHashVal(ht, entry, val);
ht->used++;
return DICT_OK;
}
/* Add an element, discarding the old if the key already exists.
* Return 1 if the key was added from scratch, 0 if there was already an
* element with such key and dictReplace() just performed a value update
* operation. */
static int dictReplace(dict *ht, void *key, void *val) {
dictEntry *entry, auxentry;
/* Try to add the element. If the key
* does not exists dictAdd will succeed. */
if (dictAdd(ht, key, val) == DICT_OK)
return 1;
/* It already exists, get the entry */
entry = dictFind(ht, key);
if (entry == NULL)
return 0;
/* Free the old value and set the new one */
/* Set the new value and free the old one. Note that it is important
* to do that in this order, as the value may just be exactly the same
* as the previous one. In this context, think to reference counting,
* you want to increment (set), and then decrement (free), and not the
* reverse. */
auxentry = *entry;
dictSetHashVal(ht, entry, val);
dictFreeEntryVal(ht, &auxentry);
return 0;
}
/* Search and remove an element */
static int dictDelete(dict *ht, const void *key) {
unsigned int h;
dictEntry *de, *prevde;
if (ht->size == 0)
return DICT_ERR;
h = dictHashKey(ht, key) & ht->sizemask;
de = ht->table[h];
prevde = NULL;
while(de) {
if (dictCompareHashKeys(ht,key,de->key)) {
/* Unlink the element from the list */
if (prevde)
prevde->next = de->next;
else
ht->table[h] = de->next;
dictFreeEntryKey(ht,de);
dictFreeEntryVal(ht,de);
hi_free(de);
ht->used--;
return DICT_OK;
}
prevde = de;
de = de->next;
}
return DICT_ERR; /* not found */
}
/* Destroy an entire hash table */
static int _dictClear(dict *ht) {
unsigned long i;
/* Free all the elements */
for (i = 0; i < ht->size && ht->used > 0; i++) {
dictEntry *he, *nextHe;
if ((he = ht->table[i]) == NULL) continue;
while(he) {
nextHe = he->next;
dictFreeEntryKey(ht, he);
dictFreeEntryVal(ht, he);
hi_free(he);
ht->used--;
he = nextHe;
}
}
/* Free the table and the allocated cache structure */
hi_free(ht->table);
/* Re-initialize the table */
_dictReset(ht);
return DICT_OK; /* never fails */
}
/* Clear & Release the hash table */
static void dictRelease(dict *ht) {
_dictClear(ht);
hi_free(ht);
}
static dictEntry *dictFind(dict *ht, const void *key) {
dictEntry *he;
unsigned int h;
if (ht->size == 0) return NULL;
h = dictHashKey(ht, key) & ht->sizemask;
he = ht->table[h];
while(he) {
if (dictCompareHashKeys(ht, key, he->key))
return he;
he = he->next;
}
return NULL;
}
static dictIterator *dictGetIterator(dict *ht) {
dictIterator *iter = hi_malloc(sizeof(*iter));
if (iter == NULL)
return NULL;
iter->ht = ht;
iter->index = -1;
iter->entry = NULL;
iter->nextEntry = NULL;
return iter;
}
static dictEntry *dictNext(dictIterator *iter) {
while (1) {
if (iter->entry == NULL) {
iter->index++;
if (iter->index >=
(signed)iter->ht->size) break;
iter->entry = iter->ht->table[iter->index];
} else {
iter->entry = iter->nextEntry;
}
if (iter->entry) {
/* We need to save the 'next' here, the iterator user
* may delete the entry we are returning. */
iter->nextEntry = iter->entry->next;
return iter->entry;
}
}
return NULL;
}
static void dictReleaseIterator(dictIterator *iter) {
hi_free(iter);
}
/* ------------------------- private functions ------------------------------ */
/* Expand the hash table if needed */
static int _dictExpandIfNeeded(dict *ht) {
/* If the hash table is empty expand it to the initial size,
* if the table is "full" double its size. */
if (ht->size == 0)
return dictExpand(ht, DICT_HT_INITIAL_SIZE);
if (ht->used == ht->size)
return dictExpand(ht, ht->size*2);
return DICT_OK;
}
/* Our hash table capability is a power of two */
static unsigned long _dictNextPower(unsigned long size) {
unsigned long i = DICT_HT_INITIAL_SIZE;
if (size >= LONG_MAX) return LONG_MAX;
while(1) {
if (i >= size)
return i;
i *= 2;
}
}
/* Returns the index of a free slot that can be populated with
* an hash entry for the given 'key'.
* If the key already exists, -1 is returned. */
static int _dictKeyIndex(dict *ht, const void *key) {
unsigned int h;
dictEntry *he;
/* Expand the hashtable if needed */
if (_dictExpandIfNeeded(ht) == DICT_ERR)
return -1;
/* Compute the key hash value */
h = dictHashKey(ht, key) & ht->sizemask;
/* Search if this slot does not already contain the given key */
he = ht->table[h];
while(he) {
if (dictCompareHashKeys(ht, key, he->key))
return -1;
he = he->next;
}
return h;
}
/* Hash table implementation.
*
* This file implements in memory hash tables with insert/del/replace/find/
* get-random-element operations. Hash tables will auto resize if needed
* tables of power of two in size are used, collisions are handled by
* chaining. See the source code for more information... :)
*
* Copyright (c) 2006-2010, Salvatore Sanfilippo <antirez at gmail dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __DICT_H
#define __DICT_H
#define DICT_OK 0
#define DICT_ERR 1
/* Unused arguments generate annoying warnings... */
#define DICT_NOTUSED(V) ((void) V)
typedef struct dictEntry {
void *key;
void *val;
struct dictEntry *next;
} dictEntry;
typedef struct dictType {
unsigned int (*hashFunction)(const void *key);
void *(*keyDup)(void *privdata, const void *key);
void *(*valDup)(void *privdata, const void *obj);
int (*keyCompare)(void *privdata, const void *key1, const void *key2);
void (*keyDestructor)(void *privdata, void *key);
void (*valDestructor)(void *privdata, void *obj);
} dictType;
typedef struct dict {
dictEntry **table;
dictType *type;
unsigned long size;
unsigned long sizemask;
unsigned long used;
void *privdata;
} dict;
typedef struct dictIterator {
dict *ht;
int index;
dictEntry *entry, *nextEntry;
} dictIterator;
/* This is the initial size of every hash table */
#define DICT_HT_INITIAL_SIZE 4
/* ------------------------------- Macros ------------------------------------*/
#define dictFreeEntryVal(ht, entry) \
if ((ht)->type->valDestructor) \
(ht)->type->valDestructor((ht)->privdata, (entry)->val)
#define dictSetHashVal(ht, entry, _val_) do { \
if ((ht)->type->valDup) \
entry->val = (ht)->type->valDup((ht)->privdata, _val_); \
else \
entry->val = (_val_); \
} while(0)
#define dictFreeEntryKey(ht, entry) \
if ((ht)->type->keyDestructor) \
(ht)->type->keyDestructor((ht)->privdata, (entry)->key)
#define dictSetHashKey(ht, entry, _key_) do { \
if ((ht)->type->keyDup) \
entry->key = (ht)->type->keyDup((ht)->privdata, _key_); \
else \
entry->key = (_key_); \
} while(0)
#define dictCompareHashKeys(ht, key1, key2) \
(((ht)->type->keyCompare) ? \
(ht)->type->keyCompare((ht)->privdata, key1, key2) : \
(key1) == (key2))
#define dictHashKey(ht, key) (ht)->type->hashFunction(key)
#define dictGetEntryKey(he) ((he)->key)
#define dictGetEntryVal(he) ((he)->val)
#define dictSlots(ht) ((ht)->size)
#define dictSize(ht) ((ht)->used)
/* API */
static unsigned int dictGenHashFunction(const unsigned char *buf, int len);
static dict *dictCreate(dictType *type, void *privDataPtr);
static int dictExpand(dict *ht, unsigned long size);
static int dictAdd(dict *ht, void *key, void *val);
static int dictReplace(dict *ht, void *key, void *val);
static int dictDelete(dict *ht, const void *key);
static void dictRelease(dict *ht);
static dictEntry * dictFind(dict *ht, const void *key);
static dictIterator *dictGetIterator(dict *ht);
static dictEntry *dictNext(dictIterator *iter);
static void dictReleaseIterator(dictIterator *iter);
#endif /* __DICT_H */
INCLUDE(FindPkgConfig)
# Check for GLib
PKG_CHECK_MODULES(GLIB2 glib-2.0)
if (GLIB2_FOUND)
INCLUDE_DIRECTORIES(${GLIB2_INCLUDE_DIRS})
LINK_DIRECTORIES(${GLIB2_LIBRARY_DIRS})
ADD_EXECUTABLE(example-glib example-glib.c)
TARGET_LINK_LIBRARIES(example-glib hiredis ${GLIB2_LIBRARIES})
ENDIF(GLIB2_FOUND)
FIND_PATH(LIBEV ev.h
HINTS /usr/local /usr/opt/local
ENV LIBEV_INCLUDE_DIR)
if (LIBEV)
# Just compile and link with libev
ADD_EXECUTABLE(example-libev example-libev.c)
TARGET_LINK_LIBRARIES(example-libev hiredis ev)
ENDIF()
FIND_PATH(LIBEVENT event.h)
if (LIBEVENT)
ADD_EXECUTABLE(example-libevent example-libevent)
TARGET_LINK_LIBRARIES(example-libevent hiredis event)
ENDIF()
FIND_PATH(LIBUV uv.h)
IF (LIBUV)
ADD_EXECUTABLE(example-libuv example-libuv.c)
TARGET_LINK_LIBRARIES(example-libuv hiredis uv)
ENDIF()
IF (APPLE)
FIND_LIBRARY(CF CoreFoundation)
ADD_EXECUTABLE(example-macosx example-macosx.c)
TARGET_LINK_LIBRARIES(example-macosx hiredis ${CF})
ENDIF()
IF (ENABLE_SSL)
ADD_EXECUTABLE(example-ssl example-ssl.c)
TARGET_LINK_LIBRARIES(example-ssl hiredis hiredis_ssl)
ENDIF()
ADD_EXECUTABLE(example example.c)
TARGET_LINK_LIBRARIES(example hiredis)
ADD_EXECUTABLE(example-push example-push.c)
TARGET_LINK_LIBRARIES(example-push hiredis)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <hiredis.h>
#include <async.h>
#include <adapters/ae.h>
/* Put event loop in the global scope, so it can be explicitly stopped */
static aeEventLoop *loop;
void getCallback(redisAsyncContext *c, void *r, void *privdata) {
redisReply *reply = r;
if (reply == NULL) return;
printf("argv[%s]: %s\n", (char*)privdata, reply->str);
/* Disconnect after receiving the reply to GET */
redisAsyncDisconnect(c);
}
void connectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
aeStop(loop);
return;
}
printf("Connected...\n");
}
void disconnectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
aeStop(loop);
return;
}
printf("Disconnected...\n");
aeStop(loop);
}
int main (int argc, char **argv) {
signal(SIGPIPE, SIG_IGN);
redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
if (c->err) {
/* Let *c leak for now... */
printf("Error: %s\n", c->errstr);
return 1;
}
loop = aeCreateEventLoop(64);
redisAeAttach(loop, c);
redisAsyncSetConnectCallback(c,connectCallback);
redisAsyncSetDisconnectCallback(c,disconnectCallback);
redisAsyncCommand(c, NULL, NULL, "SET key %b", argv[argc-1], strlen(argv[argc-1]));
redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
aeMain(loop);
return 0;
}
#include <stdlib.h>
#include <hiredis.h>
#include <async.h>
#include <adapters/glib.h>
static GMainLoop *mainloop;
static void
connect_cb (const redisAsyncContext *ac G_GNUC_UNUSED,
int status)
{
if (status != REDIS_OK) {
g_printerr("Failed to connect: %s\n", ac->errstr);
g_main_loop_quit(mainloop);
} else {
g_printerr("Connected...\n");
}
}
static void
disconnect_cb (const redisAsyncContext *ac G_GNUC_UNUSED,
int status)
{
if (status != REDIS_OK) {
g_error("Failed to disconnect: %s", ac->errstr);
} else {
g_printerr("Disconnected...\n");
g_main_loop_quit(mainloop);
}
}
static void
command_cb(redisAsyncContext *ac,
gpointer r,
gpointer user_data G_GNUC_UNUSED)
{
redisReply *reply = r;
if (reply) {
g_print("REPLY: %s\n", reply->str);
}
redisAsyncDisconnect(ac);
}
gint
main (gint argc G_GNUC_UNUSED,
gchar *argv[] G_GNUC_UNUSED)
{
redisAsyncContext *ac;
GMainContext *context = NULL;
GSource *source;
ac = redisAsyncConnect("127.0.0.1", 6379);
if (ac->err) {
g_printerr("%s\n", ac->errstr);
exit(EXIT_FAILURE);
}
source = redis_source_new(ac);
mainloop = g_main_loop_new(context, FALSE);
g_source_attach(source, context);
redisAsyncSetConnectCallback(ac, connect_cb);
redisAsyncSetDisconnectCallback(ac, disconnect_cb);
redisAsyncCommand(ac, command_cb, NULL, "SET key 1234");
redisAsyncCommand(ac, command_cb, NULL, "GET key");
g_main_loop_run(mainloop);
return EXIT_SUCCESS;
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <hiredis.h>
#include <async.h>
#include <adapters/ivykis.h>
void getCallback(redisAsyncContext *c, void *r, void *privdata) {
redisReply *reply = r;
if (reply == NULL) return;
printf("argv[%s]: %s\n", (char*)privdata, reply->str);
/* Disconnect after receiving the reply to GET */
redisAsyncDisconnect(c);
}
void connectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Connected...\n");
}
void disconnectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Disconnected...\n");
}
int main (int argc, char **argv) {
#ifndef _WIN32
signal(SIGPIPE, SIG_IGN);
#endif
iv_init();
redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
if (c->err) {
/* Let *c leak for now... */
printf("Error: %s\n", c->errstr);
return 1;
}
redisIvykisAttach(c);
redisAsyncSetConnectCallback(c,connectCallback);
redisAsyncSetDisconnectCallback(c,disconnectCallback);
redisAsyncCommand(c, NULL, NULL, "SET key %b", argv[argc-1], strlen(argv[argc-1]));
redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
iv_main();
iv_deinit();
return 0;
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <hiredis.h>
#include <async.h>
#include <adapters/libev.h>
void getCallback(redisAsyncContext *c, void *r, void *privdata) {
redisReply *reply = r;
if (reply == NULL) return;
printf("argv[%s]: %s\n", (char*)privdata, reply->str);
/* Disconnect after receiving the reply to GET */
redisAsyncDisconnect(c);
}
void connectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Connected...\n");
}
void disconnectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Disconnected...\n");
}
int main (int argc, char **argv) {
#ifndef _WIN32
signal(SIGPIPE, SIG_IGN);
#endif
redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
if (c->err) {
/* Let *c leak for now... */
printf("Error: %s\n", c->errstr);
return 1;
}
redisLibevAttach(EV_DEFAULT_ c);
redisAsyncSetConnectCallback(c,connectCallback);
redisAsyncSetDisconnectCallback(c,disconnectCallback);
redisAsyncCommand(c, NULL, NULL, "SET key %b", argv[argc-1], strlen(argv[argc-1]));
redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
ev_loop(EV_DEFAULT_ 0);
return 0;
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <hiredis.h>
#include <hiredis_ssl.h>
#include <async.h>
#include <adapters/libevent.h>
void getCallback(redisAsyncContext *c, void *r, void *privdata) {
redisReply *reply = r;
if (reply == NULL) return;
printf("argv[%s]: %s\n", (char*)privdata, reply->str);
/* Disconnect after receiving the reply to GET */
redisAsyncDisconnect(c);
}
void connectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Connected...\n");
}
void disconnectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Disconnected...\n");
}
int main (int argc, char **argv) {
#ifndef _WIN32
signal(SIGPIPE, SIG_IGN);
#endif
struct event_base *base = event_base_new();
if (argc < 5) {
fprintf(stderr,
"Usage: %s <key> <host> <port> <cert> <certKey> [ca]\n", argv[0]);
exit(1);
}
const char *value = argv[1];
size_t nvalue = strlen(value);
const char *hostname = argv[2];
int port = atoi(argv[3]);
const char *cert = argv[4];
const char *certKey = argv[5];
const char *caCert = argc > 5 ? argv[6] : NULL;
redisSSLContext *ssl;
redisSSLContextError ssl_error;
redisInitOpenSSL();
ssl = redisCreateSSLContext(caCert, NULL,
cert, certKey, NULL, &ssl_error);
if (!ssl) {
printf("Error: %s\n", redisSSLContextGetError(ssl_error));
return 1;
}
redisAsyncContext *c = redisAsyncConnect(hostname, port);
if (c->err) {
/* Let *c leak for now... */
printf("Error: %s\n", c->errstr);
return 1;
}
if (redisInitiateSSLWithContext(&c->c, ssl) != REDIS_OK) {
printf("SSL Error!\n");
exit(1);
}
redisLibeventAttach(c,base);
redisAsyncSetConnectCallback(c,connectCallback);
redisAsyncSetDisconnectCallback(c,disconnectCallback);
redisAsyncCommand(c, NULL, NULL, "SET key %b", value, nvalue);
redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
event_base_dispatch(base);
redisFreeSSLContext(ssl);
return 0;
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <hiredis.h>
#include <async.h>
#include <adapters/libevent.h>
void getCallback(redisAsyncContext *c, void *r, void *privdata) {
redisReply *reply = r;
if (reply == NULL) {
if (c->errstr) {
printf("errstr: %s\n", c->errstr);
}
return;
}
printf("argv[%s]: %s\n", (char*)privdata, reply->str);
/* Disconnect after receiving the reply to GET */
redisAsyncDisconnect(c);
}
void connectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Connected...\n");
}
void disconnectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Disconnected...\n");
}
int main (int argc, char **argv) {
#ifndef _WIN32
signal(SIGPIPE, SIG_IGN);
#endif
struct event_base *base = event_base_new();
redisOptions options = {0};
REDIS_OPTIONS_SET_TCP(&options, "127.0.0.1", 6379);
struct timeval tv = {0};
tv.tv_sec = 1;
options.connect_timeout = &tv;
redisAsyncContext *c = redisAsyncConnectWithOptions(&options);
if (c->err) {
/* Let *c leak for now... */
printf("Error: %s\n", c->errstr);
return 1;
}
redisLibeventAttach(c,base);
redisAsyncSetConnectCallback(c,connectCallback);
redisAsyncSetDisconnectCallback(c,disconnectCallback);
redisAsyncCommand(c, NULL, NULL, "SET key %b", argv[argc-1], strlen(argv[argc-1]));
redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
event_base_dispatch(base);
return 0;
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <hiredis.h>
#include <async.h>
#include <adapters/libuv.h>
void getCallback(redisAsyncContext *c, void *r, void *privdata) {
redisReply *reply = r;
if (reply == NULL) return;
printf("argv[%s]: %s\n", (char*)privdata, reply->str);
/* Disconnect after receiving the reply to GET */
redisAsyncDisconnect(c);
}
void connectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Connected...\n");
}
void disconnectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Disconnected...\n");
}
int main (int argc, char **argv) {
#ifndef _WIN32
signal(SIGPIPE, SIG_IGN);
#endif
uv_loop_t* loop = uv_default_loop();
redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
if (c->err) {
/* Let *c leak for now... */
printf("Error: %s\n", c->errstr);
return 1;
}
redisLibuvAttach(c,loop);
redisAsyncSetConnectCallback(c,connectCallback);
redisAsyncSetDisconnectCallback(c,disconnectCallback);
redisAsyncCommand(c, NULL, NULL, "SET key %b", argv[argc-1], strlen(argv[argc-1]));
redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
uv_run(loop, UV_RUN_DEFAULT);
return 0;
}
//
// Created by Дмитрий Бахвалов on 13.07.15.
// Copyright (c) 2015 Dmitry Bakhvalov. All rights reserved.
//
#include <stdio.h>
#include <hiredis.h>
#include <async.h>
#include <adapters/macosx.h>
void getCallback(redisAsyncContext *c, void *r, void *privdata) {
redisReply *reply = r;
if (reply == NULL) return;
printf("argv[%s]: %s\n", (char*)privdata, reply->str);
/* Disconnect after receiving the reply to GET */
redisAsyncDisconnect(c);
}
void connectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
printf("Connected...\n");
}
void disconnectCallback(const redisAsyncContext *c, int status) {
if (status != REDIS_OK) {
printf("Error: %s\n", c->errstr);
return;
}
CFRunLoopStop(CFRunLoopGetCurrent());
printf("Disconnected...\n");
}
int main (int argc, char **argv) {
signal(SIGPIPE, SIG_IGN);
CFRunLoopRef loop = CFRunLoopGetCurrent();
if( !loop ) {
printf("Error: Cannot get current run loop\n");
return 1;
}
redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
if (c->err) {
/* Let *c leak for now... */
printf("Error: %s\n", c->errstr);
return 1;
}
redisMacOSAttach(c, loop);
redisAsyncSetConnectCallback(c,connectCallback);
redisAsyncSetDisconnectCallback(c,disconnectCallback);
redisAsyncCommand(c, NULL, NULL, "SET key %b", argv[argc-1], strlen(argv[argc-1]));
redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
CFRunLoopRun();
return 0;
}
/*
* Copyright (c) 2020, Michael Grunder <michael dot grunder at gmail dot com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <hiredis.h>
#include <win32.h>
#define KEY_COUNT 5
#define panicAbort(fmt, ...) \
do { \
fprintf(stderr, "%s:%d:%s(): " fmt, __FILE__, __LINE__, __func__, __VA_ARGS__); \
exit(-1); \
} while (0)
static void assertReplyAndFree(redisContext *context, redisReply *reply, int type) {
if (reply == NULL)
panicAbort("NULL reply from server (error: %s)", context->errstr);
if (reply->type != type) {
if (reply->type == REDIS_REPLY_ERROR)
fprintf(stderr, "Redis Error: %s\n", reply->str);
panicAbort("Expected reply type %d but got type %d", type, reply->type);
}
freeReplyObject(reply);
}
/* Switch to the RESP3 protocol and enable client tracking */
static void enableClientTracking(redisContext *c) {
redisReply *reply = redisCommand(c, "HELLO 3");
if (reply == NULL || c->err) {
panicAbort("NULL reply or server error (error: %s)", c->errstr);
}
if (reply->type != REDIS_REPLY_MAP) {
fprintf(stderr, "Error: Can't send HELLO 3 command. Are you sure you're ");
fprintf(stderr, "connected to redis-server >= 6.0.0?\nRedis error: %s\n",
reply->type == REDIS_REPLY_ERROR ? reply->str : "(unknown)");
exit(-1);
}
freeReplyObject(reply);
/* Enable client tracking */
reply = redisCommand(c, "CLIENT TRACKING ON");
assertReplyAndFree(c, reply, REDIS_REPLY_STATUS);
}
void pushReplyHandler(void *privdata, void *r) {
redisReply *reply = r;
int *invalidations = privdata;
/* Sanity check on the invalidation reply */
if (reply->type != REDIS_REPLY_PUSH || reply->elements != 2 ||
reply->element[1]->type != REDIS_REPLY_ARRAY ||
reply->element[1]->element[0]->type != REDIS_REPLY_STRING)
{
panicAbort("%s", "Can't parse PUSH message!");
}
/* Increment our invalidation count */
*invalidations += 1;
printf("pushReplyHandler(): INVALIDATE '%s' (invalidation count: %d)\n",
reply->element[1]->element[0]->str, *invalidations);
freeReplyObject(reply);
}
/* We aren't actually freeing anything here, but it is included to show that we can
* have hiredis call our data destructor when freeing the context */
void privdata_dtor(void *privdata) {
unsigned int *icount = privdata;
printf("privdata_dtor(): In context privdata dtor (invalidations: %u)\n", *icount);
}
int main(int argc, char **argv) {
unsigned int j, invalidations = 0;
redisContext *c;
redisReply *reply;
const char *hostname = (argc > 1) ? argv[1] : "127.0.0.1";
int port = (argc > 2) ? atoi(argv[2]) : 6379;
redisOptions o = {0};
REDIS_OPTIONS_SET_TCP(&o, hostname, port);
/* Set our context privdata to the address of our invalidation counter. Each
* time our PUSH handler is called, hiredis will pass the privdata for context.
*
* This could also be done after we create the context like so:
*
* c->privdata = &invalidations;
* c->free_privdata = privdata_dtor;
*/
REDIS_OPTIONS_SET_PRIVDATA(&o, &invalidations, privdata_dtor);
/* Set our custom PUSH message handler */
o.push_cb = pushReplyHandler;
c = redisConnectWithOptions(&o);
if (c == NULL || c->err)
panicAbort("Connection error: %s", c ? c->errstr : "OOM");
/* Enable RESP3 and turn on client tracking */
enableClientTracking(c);
/* Set some keys and then read them back. Once we do that, Redis will deliver
* invalidation push messages whenever the key is modified */
for (j = 0; j < KEY_COUNT; j++) {
reply = redisCommand(c, "SET key:%d initial:%d", j, j);
assertReplyAndFree(c, reply, REDIS_REPLY_STATUS);
reply = redisCommand(c, "GET key:%d", j);
assertReplyAndFree(c, reply, REDIS_REPLY_STRING);
}
/* Trigger invalidation messages by updating keys we just read */
for (j = 0; j < KEY_COUNT; j++) {
printf(" main(): SET key:%d update:%d\n", j, j);
reply = redisCommand(c, "SET key:%d update:%d", j, j);
assertReplyAndFree(c, reply, REDIS_REPLY_STATUS);
printf(" main(): SET REPLY OK\n");
}
printf("\nTotal detected invalidations: %d, expected: %d\n", invalidations, KEY_COUNT);
/* PING server */
redisFree(c);
}
#include <iostream>
using namespace std;
#include <QCoreApplication>
#include <QTimer>
#include "example-qt.h"
void getCallback(redisAsyncContext *, void * r, void * privdata) {
redisReply * reply = static_cast<redisReply *>(r);
ExampleQt * ex = static_cast<ExampleQt *>(privdata);
if (reply == nullptr || ex == nullptr) return;
cout << "key: " << reply->str << endl;
ex->finish();
}
void ExampleQt::run() {
m_ctx = redisAsyncConnect("localhost", 6379);
if (m_ctx->err) {
cerr << "Error: " << m_ctx->errstr << endl;
redisAsyncFree(m_ctx);
emit finished();
}
m_adapter.setContext(m_ctx);
redisAsyncCommand(m_ctx, NULL, NULL, "SET key %s", m_value);
redisAsyncCommand(m_ctx, getCallback, this, "GET key");
}
int main (int argc, char **argv) {
QCoreApplication app(argc, argv);
ExampleQt example(argv[argc-1]);
QObject::connect(&example, SIGNAL(finished()), &app, SLOT(quit()));
QTimer::singleShot(0, &example, SLOT(run()));
return app.exec();
}
#ifndef __HIREDIS_EXAMPLE_QT_H
#define __HIREDIS_EXAMPLE_QT_H
#include <adapters/qt.h>
class ExampleQt : public QObject {
Q_OBJECT
public:
ExampleQt(const char * value, QObject * parent = 0)
: QObject(parent), m_value(value) {}
signals:
void finished();
public slots:
void run();
private:
void finish() { emit finished(); }
private:
const char * m_value;
redisAsyncContext * m_ctx;
RedisQtAdapter m_adapter;
friend
void getCallback(redisAsyncContext *, void *, void *);
};
#endif /* !__HIREDIS_EXAMPLE_QT_H */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <hiredis.h>
#include <hiredis_ssl.h>
#include <win32.h>
int main(int argc, char **argv) {
unsigned int j;
redisSSLContext *ssl;
redisSSLContextError ssl_error;
redisContext *c;
redisReply *reply;
if (argc < 4) {
printf("Usage: %s <host> <port> <cert> <key> [ca]\n", argv[0]);
exit(1);
}
const char *hostname = (argc > 1) ? argv[1] : "127.0.0.1";
int port = atoi(argv[2]);
const char *cert = argv[3];
const char *key = argv[4];
const char *ca = argc > 4 ? argv[5] : NULL;
redisInitOpenSSL();
ssl = redisCreateSSLContext(ca, NULL, cert, key, NULL, &ssl_error);
if (!ssl) {
printf("SSL Context error: %s\n",
redisSSLContextGetError(ssl_error));
exit(1);
}
struct timeval tv = { 1, 500000 }; // 1.5 seconds
redisOptions options = {0};
REDIS_OPTIONS_SET_TCP(&options, hostname, port);
options.connect_timeout = &tv;
c = redisConnectWithOptions(&options);
if (c == NULL || c->err) {
if (c) {
printf("Connection error: %s\n", c->errstr);
redisFree(c);
} else {
printf("Connection error: can't allocate redis context\n");
}
exit(1);
}
if (redisInitiateSSLWithContext(c, ssl) != REDIS_OK) {
printf("Couldn't initialize SSL!\n");
printf("Error: %s\n", c->errstr);
redisFree(c);
exit(1);
}
/* PING server */
reply = redisCommand(c,"PING");
printf("PING: %s\n", reply->str);
freeReplyObject(reply);
/* Set a key */
reply = redisCommand(c,"SET %s %s", "foo", "hello world");
printf("SET: %s\n", reply->str);
freeReplyObject(reply);
/* Set a key using binary safe API */
reply = redisCommand(c,"SET %b %b", "bar", (size_t) 3, "hello", (size_t) 5);
printf("SET (binary API): %s\n", reply->str);
freeReplyObject(reply);
/* Try a GET and two INCR */
reply = redisCommand(c,"GET foo");
printf("GET foo: %s\n", reply->str);
freeReplyObject(reply);
reply = redisCommand(c,"INCR counter");
printf("INCR counter: %lld\n", reply->integer);
freeReplyObject(reply);
/* again ... */
reply = redisCommand(c,"INCR counter");
printf("INCR counter: %lld\n", reply->integer);
freeReplyObject(reply);
/* Create a list of numbers, from 0 to 9 */
reply = redisCommand(c,"DEL mylist");
freeReplyObject(reply);
for (j = 0; j < 10; j++) {
char buf[64];
snprintf(buf,64,"%u",j);
reply = redisCommand(c,"LPUSH mylist element-%s", buf);
freeReplyObject(reply);
}
/* Let's check what we have inside the list */
reply = redisCommand(c,"LRANGE mylist 0 -1");
if (reply->type == REDIS_REPLY_ARRAY) {
for (j = 0; j < reply->elements; j++) {
printf("%u) %s\n", j, reply->element[j]->str);
}
}
freeReplyObject(reply);
/* Disconnects and frees the context */
redisFree(c);
redisFreeSSLContext(ssl);
return 0;
}
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <hiredis.h>
#include <win32.h>
int main(int argc, char **argv) {
unsigned int j, isunix = 0;
redisContext *c;
redisReply *reply;
const char *hostname = (argc > 1) ? argv[1] : "127.0.0.1";
if (argc > 2) {
if (*argv[2] == 'u' || *argv[2] == 'U') {
isunix = 1;
/* in this case, host is the path to the unix socket */
printf("Will connect to unix socket @%s\n", hostname);
}
}
int port = (argc > 2) ? atoi(argv[2]) : 6379;
struct timeval timeout = { 1, 500000 }; // 1.5 seconds
if (isunix) {
c = redisConnectUnixWithTimeout(hostname, timeout);
} else {
c = redisConnectWithTimeout(hostname, port, timeout);
}
if (c == NULL || c->err) {
if (c) {
printf("Connection error: %s\n", c->errstr);
redisFree(c);
} else {
printf("Connection error: can't allocate redis context\n");
}
exit(1);
}
/* PING server */
reply = redisCommand(c,"PING");
printf("PING: %s\n", reply->str);
freeReplyObject(reply);
/* Set a key */
reply = redisCommand(c,"SET %s %s", "foo", "hello world");
printf("SET: %s\n", reply->str);
freeReplyObject(reply);
/* Set a key using binary safe API */
reply = redisCommand(c,"SET %b %b", "bar", (size_t) 3, "hello", (size_t) 5);
printf("SET (binary API): %s\n", reply->str);
freeReplyObject(reply);
/* Try a GET and two INCR */
reply = redisCommand(c,"GET foo");
printf("GET foo: %s\n", reply->str);
freeReplyObject(reply);
reply = redisCommand(c,"INCR counter");
printf("INCR counter: %lld\n", reply->integer);
freeReplyObject(reply);
/* again ... */
reply = redisCommand(c,"INCR counter");
printf("INCR counter: %lld\n", reply->integer);
freeReplyObject(reply);
/* Create a list of numbers, from 0 to 9 */
reply = redisCommand(c,"DEL mylist");
freeReplyObject(reply);
for (j = 0; j < 10; j++) {
char buf[64];
snprintf(buf,64,"%u",j);
reply = redisCommand(c,"LPUSH mylist element-%s", buf);
freeReplyObject(reply);
}
/* Let's check what we have inside the list */
reply = redisCommand(c,"LRANGE mylist 0 -1");
if (reply->type == REDIS_REPLY_ARRAY) {
for (j = 0; j < reply->elements; j++) {
printf("%u) %s\n", j, reply->element[j]->str);
}
}
freeReplyObject(reply);
/* Disconnects and frees the context */
redisFree(c);
return 0;
}
#ifndef __HIREDIS_FMACRO_H
#define __HIREDIS_FMACRO_H
#define _XOPEN_SOURCE 600
#define _POSIX_C_SOURCE 200112L
#if defined(__APPLE__) && defined(__MACH__)
/* Enable TCP_KEEPALIVE */
#define _DARWIN_C_SOURCE
#endif
#endif
@PACKAGE_INIT@
set_and_check(hiredis_INCLUDEDIR "@PACKAGE_INCLUDE_INSTALL_DIR@")
IF (NOT TARGET hiredis::hiredis)
INCLUDE(${CMAKE_CURRENT_LIST_DIR}/hiredis-targets.cmake)
ENDIF()
SET(hiredis_LIBRARIES hiredis::hiredis)
SET(hiredis_INCLUDE_DIRS ${hiredis_INCLUDEDIR})
check_required_components(hiredis)
/*
* Copyright (c) 2009-2011, Salvatore Sanfilippo <antirez at gmail dot com>
* Copyright (c) 2010-2014, Pieter Noordhuis <pcnoordhuis at gmail dot com>
* Copyright (c) 2015, Matt Stancliff <matt at genges dot com>,
* Jan-Erik Rediger <janerik at fnordig dot com>
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "fmacros.h"
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include <ctype.h>
#include "hiredis.h"
#include "net.h"
#include "sds.h"
#include "async.h"
#include "win32.h"
extern int redisContextUpdateConnectTimeout(redisContext *c, const struct timeval *timeout);
extern int redisContextUpdateCommandTimeout(redisContext *c, const struct timeval *timeout);
static redisContextFuncs redisContextDefaultFuncs = {
.free_privctx = NULL,
.async_read = redisAsyncRead,
.async_write = redisAsyncWrite,
.read = redisNetRead,
.write = redisNetWrite
};
static redisReply *createReplyObject(int type);
static void *createStringObject(const redisReadTask *task, char *str, size_t len);
static void *createArrayObject(const redisReadTask *task, size_t elements);
static void *createIntegerObject(const redisReadTask *task, long long value);
static void *createDoubleObject(const redisReadTask *task, double value, char *str, size_t len);
static void *createNilObject(const redisReadTask *task);
static void *createBoolObject(const redisReadTask *task, int bval);
/* Default set of functions to build the reply. Keep in mind that such a
* function returning NULL is interpreted as OOM. */
static redisReplyObjectFunctions defaultFunctions = {
createStringObject,
createArrayObject,
createIntegerObject,
createDoubleObject,
createNilObject,
createBoolObject,
freeReplyObject
};
/* Create a reply object */
static redisReply *createReplyObject(int type) {
redisReply *r = hi_calloc(1,sizeof(*r));
if (r == NULL)
return NULL;
r->type = type;
return r;
}
/* Free a reply object */
void freeReplyObject(void *reply) {
redisReply *r = reply;
size_t j;
if (r == NULL)
return;
switch(r->type) {
case REDIS_REPLY_INTEGER:
break; /* Nothing to free */
case REDIS_REPLY_ARRAY:
case REDIS_REPLY_MAP:
case REDIS_REPLY_SET:
case REDIS_REPLY_PUSH:
if (r->element != NULL) {
for (j = 0; j < r->elements; j++)
freeReplyObject(r->element[j]);
hi_free(r->element);
}
break;
case REDIS_REPLY_ERROR:
case REDIS_REPLY_STATUS:
case REDIS_REPLY_STRING:
case REDIS_REPLY_DOUBLE:
case REDIS_REPLY_VERB:
hi_free(r->str);
break;
}
hi_free(r);
}
static void *createStringObject(const redisReadTask *task, char *str, size_t len) {
redisReply *r, *parent;
char *buf;
r = createReplyObject(task->type);
if (r == NULL)
return NULL;
assert(task->type == REDIS_REPLY_ERROR ||
task->type == REDIS_REPLY_STATUS ||
task->type == REDIS_REPLY_STRING ||
task->type == REDIS_REPLY_VERB);
/* Copy string value */
if (task->type == REDIS_REPLY_VERB) {
buf = hi_malloc(len-4+1); /* Skip 4 bytes of verbatim type header. */
if (buf == NULL) goto oom;
memcpy(r->vtype,str,3);
r->vtype[3] = '\0';
memcpy(buf,str+4,len-4);
buf[len-4] = '\0';
r->len = len - 4;
} else {
buf = hi_malloc(len+1);
if (buf == NULL) goto oom;
memcpy(buf,str,len);
buf[len] = '\0';
r->len = len;
}
r->str = buf;
if (task->parent) {
parent = task->parent->obj;
assert(parent->type == REDIS_REPLY_ARRAY ||
parent->type == REDIS_REPLY_MAP ||
parent->type == REDIS_REPLY_SET ||
parent->type == REDIS_REPLY_PUSH);
parent->element[task->idx] = r;
}
return r;
oom:
freeReplyObject(r);
return NULL;
}
static void *createArrayObject(const redisReadTask *task, size_t elements) {
redisReply *r, *parent;
r = createReplyObject(task->type);
if (r == NULL)
return NULL;
if (elements > 0) {
r->element = hi_calloc(elements,sizeof(redisReply*));
if (r->element == NULL) {
freeReplyObject(r);
return NULL;
}
}
r->elements = elements;
if (task->parent) {
parent = task->parent->obj;
assert(parent->type == REDIS_REPLY_ARRAY ||
parent->type == REDIS_REPLY_MAP ||
parent->type == REDIS_REPLY_SET ||
parent->type == REDIS_REPLY_PUSH);
parent->element[task->idx] = r;
}
return r;
}
static void *createIntegerObject(const redisReadTask *task, long long value) {
redisReply *r, *parent;
r = createReplyObject(REDIS_REPLY_INTEGER);
if (r == NULL)
return NULL;
r->integer = value;
if (task->parent) {
parent = task->parent->obj;
assert(parent->type == REDIS_REPLY_ARRAY ||
parent->type == REDIS_REPLY_MAP ||
parent->type == REDIS_REPLY_SET ||
parent->type == REDIS_REPLY_PUSH);
parent->element[task->idx] = r;
}
return r;
}
static void *createDoubleObject(const redisReadTask *task, double value, char *str, size_t len) {
redisReply *r, *parent;
r = createReplyObject(REDIS_REPLY_DOUBLE);
if (r == NULL)
return NULL;
r->dval = value;
r->str = hi_malloc(len+1);
if (r->str == NULL) {
freeReplyObject(r);
return NULL;
}
/* The double reply also has the original protocol string representing a
* double as a null terminated string. This way the caller does not need
* to format back for string conversion, especially since Redis does efforts
* to make the string more human readable avoiding the calssical double
* decimal string conversion artifacts. */
memcpy(r->str, str, len);
r->str[len] = '\0';
if (task->parent) {
parent = task->parent->obj;
assert(parent->type == REDIS_REPLY_ARRAY ||
parent->type == REDIS_REPLY_MAP ||
parent->type == REDIS_REPLY_SET);
parent->element[task->idx] = r;
}
return r;
}
static void *createNilObject(const redisReadTask *task) {
redisReply *r, *parent;
r = createReplyObject(REDIS_REPLY_NIL);
if (r == NULL)
return NULL;
if (task->parent) {
parent = task->parent->obj;
assert(parent->type == REDIS_REPLY_ARRAY ||
parent->type == REDIS_REPLY_MAP ||
parent->type == REDIS_REPLY_SET);
parent->element[task->idx] = r;
}
return r;
}
static void *createBoolObject(const redisReadTask *task, int bval) {
redisReply *r, *parent;
r = createReplyObject(REDIS_REPLY_BOOL);
if (r == NULL)
return NULL;
r->integer = bval != 0;
if (task->parent) {
parent = task->parent->obj;
assert(parent->type == REDIS_REPLY_ARRAY ||
parent->type == REDIS_REPLY_MAP ||
parent->type == REDIS_REPLY_SET);
parent->element[task->idx] = r;
}
return r;
}
/* Return the number of digits of 'v' when converted to string in radix 10.
* Implementation borrowed from link in redis/src/util.c:string2ll(). */
static uint32_t countDigits(uint64_t v) {
uint32_t result = 1;
for (;;) {
if (v < 10) return result;
if (v < 100) return result + 1;
if (v < 1000) return result + 2;
if (v < 10000) return result + 3;
v /= 10000U;
result += 4;
}
}
/* Helper that calculates the bulk length given a certain string length. */
static size_t bulklen(size_t len) {
return 1+countDigits(len)+2+len+2;
}
int redisvFormatCommand(char **target, const char *format, va_list ap) {
const char *c = format;
char *cmd = NULL; /* final command */
int pos; /* position in final command */
sds curarg, newarg; /* current argument */
int touched = 0; /* was the current argument touched? */
char **curargv = NULL, **newargv = NULL;
int argc = 0;
int totlen = 0;
int error_type = 0; /* 0 = no error; -1 = memory error; -2 = format error */
int j;
/* Abort if there is not target to set */
if (target == NULL)
return -1;
/* Build the command string accordingly to protocol */
curarg = sdsempty();
if (curarg == NULL)
return -1;
while(*c != '\0') {
if (*c != '%' || c[1] == '\0') {
if (*c == ' ') {
if (touched) {
newargv = hi_realloc(curargv,sizeof(char*)*(argc+1));
if (newargv == NULL) goto memory_err;
curargv = newargv;
curargv[argc++] = curarg;
totlen += bulklen(sdslen(curarg));
/* curarg is put in argv so it can be overwritten. */
curarg = sdsempty();
if (curarg == NULL) goto memory_err;
touched = 0;
}
} else {
newarg = sdscatlen(curarg,c,1);
if (newarg == NULL) goto memory_err;
curarg = newarg;
touched = 1;
}
} else {
char *arg;
size_t size;
/* Set newarg so it can be checked even if it is not touched. */
newarg = curarg;
switch(c[1]) {
case 's':
arg = va_arg(ap,char*);
size = strlen(arg);
if (size > 0)
newarg = sdscatlen(curarg,arg,size);
break;
case 'b':
arg = va_arg(ap,char*);
size = va_arg(ap,size_t);
if (size > 0)
newarg = sdscatlen(curarg,arg,size);
break;
case '%':
newarg = sdscat(curarg,"%");
break;
default:
/* Try to detect printf format */
{
static const char intfmts[] = "diouxX";
static const char flags[] = "#0-+ ";
char _format[16];
const char *_p = c+1;
size_t _l = 0;
va_list _cpy;
/* Flags */
while (*_p != '\0' && strchr(flags,*_p) != NULL) _p++;
/* Field width */
while (*_p != '\0' && isdigit(*_p)) _p++;
/* Precision */
if (*_p == '.') {
_p++;
while (*_p != '\0' && isdigit(*_p)) _p++;
}
/* Copy va_list before consuming with va_arg */
va_copy(_cpy,ap);
/* Integer conversion (without modifiers) */
if (strchr(intfmts,*_p) != NULL) {
va_arg(ap,int);
goto fmt_valid;
}
/* Double conversion (without modifiers) */
if (strchr("eEfFgGaA",*_p) != NULL) {
va_arg(ap,double);
goto fmt_valid;
}
/* Size: char */
if (_p[0] == 'h' && _p[1] == 'h') {
_p += 2;
if (*_p != '\0' && strchr(intfmts,*_p) != NULL) {
va_arg(ap,int); /* char gets promoted to int */
goto fmt_valid;
}
goto fmt_invalid;
}
/* Size: short */
if (_p[0] == 'h') {
_p += 1;
if (*_p != '\0' && strchr(intfmts,*_p) != NULL) {
va_arg(ap,int); /* short gets promoted to int */
goto fmt_valid;
}
goto fmt_invalid;
}
/* Size: long long */
if (_p[0] == 'l' && _p[1] == 'l') {
_p += 2;
if (*_p != '\0' && strchr(intfmts,*_p) != NULL) {
va_arg(ap,long long);
goto fmt_valid;
}
goto fmt_invalid;
}
/* Size: long */
if (_p[0] == 'l') {
_p += 1;
if (*_p != '\0' && strchr(intfmts,*_p) != NULL) {
va_arg(ap,long);
goto fmt_valid;
}
goto fmt_invalid;
}
fmt_invalid:
va_end(_cpy);
goto format_err;
fmt_valid:
_l = (_p+1)-c;
if (_l < sizeof(_format)-2) {
memcpy(_format,c,_l);
_format[_l] = '\0';
newarg = sdscatvprintf(curarg,_format,_cpy);
/* Update current position (note: outer blocks
* increment c twice so compensate here) */
c = _p-1;
}
va_end(_cpy);
break;
}
}
if (newarg == NULL) goto memory_err;
curarg = newarg;
touched = 1;
c++;
}
c++;
}
/* Add the last argument if needed */
if (touched) {
newargv = hi_realloc(curargv,sizeof(char*)*(argc+1));
if (newargv == NULL) goto memory_err;
curargv = newargv;
curargv[argc++] = curarg;
totlen += bulklen(sdslen(curarg));
} else {
sdsfree(curarg);
}
/* Clear curarg because it was put in curargv or was free'd. */
curarg = NULL;
/* Add bytes needed to hold multi bulk count */
totlen += 1+countDigits(argc)+2;
/* Build the command at protocol level */
cmd = hi_malloc(totlen+1);
if (cmd == NULL) goto memory_err;
pos = sprintf(cmd,"*%d\r\n",argc);
for (j = 0; j < argc; j++) {
pos += sprintf(cmd+pos,"$%zu\r\n",sdslen(curargv[j]));
memcpy(cmd+pos,curargv[j],sdslen(curargv[j]));
pos += sdslen(curargv[j]);
sdsfree(curargv[j]);
cmd[pos++] = '\r';
cmd[pos++] = '\n';
}
assert(pos == totlen);
cmd[pos] = '\0';
hi_free(curargv);
*target = cmd;
return totlen;
format_err:
error_type = -2;
goto cleanup;
memory_err:
error_type = -1;
goto cleanup;
cleanup:
if (curargv) {
while(argc--)
sdsfree(curargv[argc]);
hi_free(curargv);
}
sdsfree(curarg);
hi_free(cmd);
return error_type;
}
/* Format a command according to the Redis protocol. This function
* takes a format similar to printf:
*
* %s represents a C null terminated string you want to interpolate
* %b represents a binary safe string
*
* When using %b you need to provide both the pointer to the string
* and the length in bytes as a size_t. Examples:
*
* len = redisFormatCommand(target, "GET %s", mykey);
* len = redisFormatCommand(target, "SET %s %b", mykey, myval, myvallen);
*/
int redisFormatCommand(char **target, const char *format, ...) {
va_list ap;
int len;
va_start(ap,format);
len = redisvFormatCommand(target,format,ap);
va_end(ap);
/* The API says "-1" means bad result, but we now also return "-2" in some
* cases. Force the return value to always be -1. */
if (len < 0)
len = -1;
return len;
}
/* Format a command according to the Redis protocol using an sds string and
* sdscatfmt for the processing of arguments. This function takes the
* number of arguments, an array with arguments and an array with their
* lengths. If the latter is set to NULL, strlen will be used to compute the
* argument lengths.
*/
int redisFormatSdsCommandArgv(sds *target, int argc, const char **argv,
const size_t *argvlen)
{
sds cmd, aux;
unsigned long long totlen;
int j;
size_t len;
/* Abort on a NULL target */
if (target == NULL)
return -1;
/* Calculate our total size */
totlen = 1+countDigits(argc)+2;
for (j = 0; j < argc; j++) {
len = argvlen ? argvlen[j] : strlen(argv[j]);
totlen += bulklen(len);
}
/* Use an SDS string for command construction */
cmd = sdsempty();
if (cmd == NULL)
return -1;
/* We already know how much storage we need */
aux = sdsMakeRoomFor(cmd, totlen);
if (aux == NULL) {
sdsfree(cmd);
return -1;
}
cmd = aux;
/* Construct command */
cmd = sdscatfmt(cmd, "*%i\r\n", argc);
for (j=0; j < argc; j++) {
len = argvlen ? argvlen[j] : strlen(argv[j]);
cmd = sdscatfmt(cmd, "$%u\r\n", len);
cmd = sdscatlen(cmd, argv[j], len);
cmd = sdscatlen(cmd, "\r\n", sizeof("\r\n")-1);
}
assert(sdslen(cmd)==totlen);
*target = cmd;
return totlen;
}
void redisFreeSdsCommand(sds cmd) {
sdsfree(cmd);
}
/* Format a command according to the Redis protocol. This function takes the
* number of arguments, an array with arguments and an array with their
* lengths. If the latter is set to NULL, strlen will be used to compute the
* argument lengths.
*/
int redisFormatCommandArgv(char **target, int argc, const char **argv, const size_t *argvlen) {
char *cmd = NULL; /* final command */
int pos; /* position in final command */
size_t len;
int totlen, j;
/* Abort on a NULL target */
if (target == NULL)
return -1;
/* Calculate number of bytes needed for the command */
totlen = 1+countDigits(argc)+2;
for (j = 0; j < argc; j++) {
len = argvlen ? argvlen[j] : strlen(argv[j]);
totlen += bulklen(len);
}
/* Build the command at protocol level */
cmd = hi_malloc(totlen+1);
if (cmd == NULL)
return -1;
pos = sprintf(cmd,"*%d\r\n",argc);
for (j = 0; j < argc; j++) {
len = argvlen ? argvlen[j] : strlen(argv[j]);
pos += sprintf(cmd+pos,"$%zu\r\n",len);
memcpy(cmd+pos,argv[j],len);
pos += len;
cmd[pos++] = '\r';
cmd[pos++] = '\n';
}
assert(pos == totlen);
cmd[pos] = '\0';
*target = cmd;
return totlen;
}
void redisFreeCommand(char *cmd) {
hi_free(cmd);
}
void __redisSetError(redisContext *c, int type, const char *str) {
size_t len;
c->err = type;
if (str != NULL) {
len = strlen(str);
len = len < (sizeof(c->errstr)-1) ? len : (sizeof(c->errstr)-1);
memcpy(c->errstr,str,len);
c->errstr[len] = '\0';
} else {
/* Only REDIS_ERR_IO may lack a description! */
assert(type == REDIS_ERR_IO);
strerror_r(errno, c->errstr, sizeof(c->errstr));
}
}
redisReader *redisReaderCreate(void) {
return redisReaderCreateWithFunctions(&defaultFunctions);
}
static void redisPushAutoFree(void *privdata, void *reply) {
(void)privdata;
freeReplyObject(reply);
}
static redisContext *redisContextInit(void) {
redisContext *c;
c = hi_calloc(1, sizeof(*c));
if (c == NULL)
return NULL;
c->funcs = &redisContextDefaultFuncs;
c->obuf = sdsempty();
c->reader = redisReaderCreate();
c->fd = REDIS_INVALID_FD;
if (c->obuf == NULL || c->reader == NULL) {
redisFree(c);
return NULL;
}
return c;
}
void redisFree(redisContext *c) {
if (c == NULL)
return;
redisNetClose(c);
sdsfree(c->obuf);
redisReaderFree(c->reader);
hi_free(c->tcp.host);
hi_free(c->tcp.source_addr);
hi_free(c->unix_sock.path);
hi_free(c->connect_timeout);
hi_free(c->command_timeout);
hi_free(c->saddr);
if (c->privdata && c->free_privdata)
c->free_privdata(c->privdata);
if (c->funcs->free_privctx)
c->funcs->free_privctx(c->privctx);
memset(c, 0xff, sizeof(*c));
hi_free(c);
}
redisFD redisFreeKeepFd(redisContext *c) {
redisFD fd = c->fd;
c->fd = REDIS_INVALID_FD;
redisFree(c);
return fd;
}
int redisReconnect(redisContext *c) {
c->err = 0;
memset(c->errstr, '\0', strlen(c->errstr));
if (c->privctx && c->funcs->free_privctx) {
c->funcs->free_privctx(c->privctx);
c->privctx = NULL;
}
redisNetClose(c);
sdsfree(c->obuf);
redisReaderFree(c->reader);
c->obuf = sdsempty();
c->reader = redisReaderCreate();
if (c->obuf == NULL || c->reader == NULL) {
__redisSetError(c, REDIS_ERR_OOM, "Out of memory");
return REDIS_ERR;
}
int ret = REDIS_ERR;
if (c->connection_type == REDIS_CONN_TCP) {
ret = redisContextConnectBindTcp(c, c->tcp.host, c->tcp.port,
c->connect_timeout, c->tcp.source_addr);
} else if (c->connection_type == REDIS_CONN_UNIX) {
ret = redisContextConnectUnix(c, c->unix_sock.path, c->connect_timeout);
} else {
/* Something bad happened here and shouldn't have. There isn't
enough information in the context to reconnect. */
__redisSetError(c,REDIS_ERR_OTHER,"Not enough information to reconnect");
ret = REDIS_ERR;
}
if (c->command_timeout != NULL && (c->flags & REDIS_BLOCK) && c->fd != REDIS_INVALID_FD) {
redisContextSetTimeout(c, *c->command_timeout);
}
return ret;
}
redisContext *redisConnectWithOptions(const redisOptions *options) {
redisContext *c = redisContextInit();
if (c == NULL) {
return NULL;
}
if (!(options->options & REDIS_OPT_NONBLOCK)) {
c->flags |= REDIS_BLOCK;
}
if (options->options & REDIS_OPT_REUSEADDR) {
c->flags |= REDIS_REUSEADDR;
}
if (options->options & REDIS_OPT_NOAUTOFREE) {
c->flags |= REDIS_NO_AUTO_FREE;
}
/* Set any user supplied RESP3 PUSH handler or use freeReplyObject
* as a default unless specifically flagged that we don't want one. */
if (options->push_cb != NULL)
redisSetPushCallback(c, options->push_cb);
else if (!(options->options & REDIS_OPT_NO_PUSH_AUTOFREE))
redisSetPushCallback(c, redisPushAutoFree);
c->privdata = options->privdata;
c->free_privdata = options->free_privdata;
if (redisContextUpdateConnectTimeout(c, options->connect_timeout) != REDIS_OK ||
redisContextUpdateCommandTimeout(c, options->command_timeout) != REDIS_OK) {
__redisSetError(c, REDIS_ERR_OOM, "Out of memory");
return c;
}
if (options->type == REDIS_CONN_TCP) {
redisContextConnectBindTcp(c, options->endpoint.tcp.ip,
options->endpoint.tcp.port, options->connect_timeout,
options->endpoint.tcp.source_addr);
} else if (options->type == REDIS_CONN_UNIX) {
redisContextConnectUnix(c, options->endpoint.unix_socket,
options->connect_timeout);
} else if (options->type == REDIS_CONN_USERFD) {
c->fd = options->endpoint.fd;
c->flags |= REDIS_CONNECTED;
} else {
// Unknown type - FIXME - FREE
return NULL;
}
if (options->command_timeout != NULL && (c->flags & REDIS_BLOCK) && c->fd != REDIS_INVALID_FD) {
redisContextSetTimeout(c, *options->command_timeout);
}
return c;
}
/* Connect to a Redis instance. On error the field error in the returned
* context will be set to the return value of the error function.
* When no set of reply functions is given, the default set will be used. */
redisContext *redisConnect(const char *ip, int port) {
redisOptions options = {0};
REDIS_OPTIONS_SET_TCP(&options, ip, port);
return redisConnectWithOptions(&options);
}
redisContext *redisConnectWithTimeout(const char *ip, int port, const struct timeval tv) {
redisOptions options = {0};
REDIS_OPTIONS_SET_TCP(&options, ip, port);
options.connect_timeout = &tv;
return redisConnectWithOptions(&options);
}
redisContext *redisConnectNonBlock(const char *ip, int port) {
redisOptions options = {0};
REDIS_OPTIONS_SET_TCP(&options, ip, port);
options.options |= REDIS_OPT_NONBLOCK;
return redisConnectWithOptions(&options);
}
redisContext *redisConnectBindNonBlock(const char *ip, int port,
const char *source_addr) {
redisOptions options = {0};
REDIS_OPTIONS_SET_TCP(&options, ip, port);
options.endpoint.tcp.source_addr = source_addr;
options.options |= REDIS_OPT_NONBLOCK;
return redisConnectWithOptions(&options);
}
redisContext *redisConnectBindNonBlockWithReuse(const char *ip, int port,
const char *source_addr) {
redisOptions options = {0};
REDIS_OPTIONS_SET_TCP(&options, ip, port);
options.endpoint.tcp.source_addr = source_addr;
options.options |= REDIS_OPT_NONBLOCK|REDIS_OPT_REUSEADDR;
return redisConnectWithOptions(&options);
}
redisContext *redisConnectUnix(const char *path) {
redisOptions options = {0};
REDIS_OPTIONS_SET_UNIX(&options, path);
return redisConnectWithOptions(&options);
}
redisContext *redisConnectUnixWithTimeout(const char *path, const struct timeval tv) {
redisOptions options = {0};
REDIS_OPTIONS_SET_UNIX(&options, path);
options.connect_timeout = &tv;
return redisConnectWithOptions(&options);
}
redisContext *redisConnectUnixNonBlock(const char *path) {
redisOptions options = {0};
REDIS_OPTIONS_SET_UNIX(&options, path);
options.options |= REDIS_OPT_NONBLOCK;
return redisConnectWithOptions(&options);
}
redisContext *redisConnectFd(redisFD fd) {
redisOptions options = {0};
options.type = REDIS_CONN_USERFD;
options.endpoint.fd = fd;
return redisConnectWithOptions(&options);
}
/* Set read/write timeout on a blocking socket. */
int redisSetTimeout(redisContext *c, const struct timeval tv) {
if (c->flags & REDIS_BLOCK)
return redisContextSetTimeout(c,tv);
return REDIS_ERR;
}
/* Enable connection KeepAlive. */
int redisEnableKeepAlive(redisContext *c) {
if (redisKeepAlive(c, REDIS_KEEPALIVE_INTERVAL) != REDIS_OK)
return REDIS_ERR;
return REDIS_OK;
}
/* Set a user provided RESP3 PUSH handler and return any old one set. */
redisPushFn *redisSetPushCallback(redisContext *c, redisPushFn *fn) {
redisPushFn *old = c->push_cb;
c->push_cb = fn;
return old;
}
/* Use this function to handle a read event on the descriptor. It will try
* and read some bytes from the socket and feed them to the reply parser.
*
* After this function is called, you may use redisGetReplyFromReader to
* see if there is a reply available. */
int redisBufferRead(redisContext *c) {
char buf[1024*16];
int nread;
/* Return early when the context has seen an error. */
if (c->err)
return REDIS_ERR;
nread = c->funcs->read(c, buf, sizeof(buf));
if (nread > 0) {
if (redisReaderFeed(c->reader, buf, nread) != REDIS_OK) {
__redisSetError(c, c->reader->err, c->reader->errstr);
return REDIS_ERR;
} else {
}
} else if (nread < 0) {
return REDIS_ERR;
}
return REDIS_OK;
}
/* Write the output buffer to the socket.
*
* Returns REDIS_OK when the buffer is empty, or (a part of) the buffer was
* successfully written to the socket. When the buffer is empty after the
* write operation, "done" is set to 1 (if given).
*
* Returns REDIS_ERR if an error occurred trying to write and sets
* c->errstr to hold the appropriate error string.
*/
int redisBufferWrite(redisContext *c, int *done) {
/* Return early when the context has seen an error. */
if (c->err)
return REDIS_ERR;
if (sdslen(c->obuf) > 0) {
ssize_t nwritten = c->funcs->write(c);
if (nwritten < 0) {
return REDIS_ERR;
} else if (nwritten > 0) {
if (nwritten == (ssize_t)sdslen(c->obuf)) {
sdsfree(c->obuf);
c->obuf = sdsempty();
if (c->obuf == NULL)
goto oom;
} else {
if (sdsrange(c->obuf,nwritten,-1) < 0) goto oom;
}
}
}
if (done != NULL) *done = (sdslen(c->obuf) == 0);
return REDIS_OK;
oom:
__redisSetError(c, REDIS_ERR_OOM, "Out of memory");
return REDIS_ERR;
}
/* Internal helper function to try and get a reply from the reader,
* or set an error in the context otherwise. */
int redisGetReplyFromReader(redisContext *c, void **reply) {
if (redisReaderGetReply(c->reader,reply) == REDIS_ERR) {
__redisSetError(c,c->reader->err,c->reader->errstr);
return REDIS_ERR;
}
return REDIS_OK;
}
/* Internal helper that returns 1 if the reply was a RESP3 PUSH
* message and we handled it with a user-provided callback. */
static int redisHandledPushReply(redisContext *c, void *reply) {
if (reply && c->push_cb && redisIsPushReply(reply)) {
c->push_cb(c->privdata, reply);
return 1;
}
return 0;
}
int redisGetReply(redisContext *c, void **reply) {
int wdone = 0;
void *aux = NULL;
/* Try to read pending replies */
if (redisGetReplyFromReader(c,&aux) == REDIS_ERR)
return REDIS_ERR;
/* For the blocking context, flush output buffer and read reply */
if (aux == NULL && c->flags & REDIS_BLOCK) {
/* Write until done */
do {
if (redisBufferWrite(c,&wdone) == REDIS_ERR)
return REDIS_ERR;
} while (!wdone);
/* Read until there is a reply */
do {
if (redisBufferRead(c) == REDIS_ERR)
return REDIS_ERR;
/* We loop here in case the user has specified a RESP3
* PUSH handler (e.g. for client tracking). */
do {
if (redisGetReplyFromReader(c,&aux) == REDIS_ERR)
return REDIS_ERR;
} while (redisHandledPushReply(c, aux));
} while (aux == NULL);
}
/* Set reply or free it if we were passed NULL */
if (reply != NULL) {
*reply = aux;
} else {
freeReplyObject(aux);
}
return REDIS_OK;
}
/* Helper function for the redisAppendCommand* family of functions.
*
* Write a formatted command to the output buffer. When this family
* is used, you need to call redisGetReply yourself to retrieve
* the reply (or replies in pub/sub).
*/
int __redisAppendCommand(redisContext *c, const char *cmd, size_t len) {
sds newbuf;
newbuf = sdscatlen(c->obuf,cmd,len);
if (newbuf == NULL) {
__redisSetError(c,REDIS_ERR_OOM,"Out of memory");
return REDIS_ERR;
}
c->obuf = newbuf;
return REDIS_OK;
}
int redisAppendFormattedCommand(redisContext *c, const char *cmd, size_t len) {
if (__redisAppendCommand(c, cmd, len) != REDIS_OK) {
return REDIS_ERR;
}
return REDIS_OK;
}
int redisvAppendCommand(redisContext *c, const char *format, va_list ap) {
char *cmd;
int len;
len = redisvFormatCommand(&cmd,format,ap);
if (len == -1) {
__redisSetError(c,REDIS_ERR_OOM,"Out of memory");
return REDIS_ERR;
} else if (len == -2) {
__redisSetError(c,REDIS_ERR_OTHER,"Invalid format string");
return REDIS_ERR;
}
if (__redisAppendCommand(c,cmd,len) != REDIS_OK) {
hi_free(cmd);
return REDIS_ERR;
}
hi_free(cmd);
return REDIS_OK;
}
int redisAppendCommand(redisContext *c, const char *format, ...) {
va_list ap;
int ret;
va_start(ap,format);
ret = redisvAppendCommand(c,format,ap);
va_end(ap);
return ret;
}
int redisAppendCommandArgv(redisContext *c, int argc, const char **argv, const size_t *argvlen) {
sds cmd;
int len;
len = redisFormatSdsCommandArgv(&cmd,argc,argv,argvlen);
if (len == -1) {
__redisSetError(c,REDIS_ERR_OOM,"Out of memory");
return REDIS_ERR;
}
if (__redisAppendCommand(c,cmd,len) != REDIS_OK) {
sdsfree(cmd);
return REDIS_ERR;
}
sdsfree(cmd);
return REDIS_OK;
}
/* Helper function for the redisCommand* family of functions.
*
* Write a formatted command to the output buffer. If the given context is
* blocking, immediately read the reply into the "reply" pointer. When the
* context is non-blocking, the "reply" pointer will not be used and the
* command is simply appended to the write buffer.
*
* Returns the reply when a reply was successfully retrieved. Returns NULL
* otherwise. When NULL is returned in a blocking context, the error field
* in the context will be set.
*/
static void *__redisBlockForReply(redisContext *c) {
void *reply;
if (c->flags & REDIS_BLOCK) {
if (redisGetReply(c,&reply) != REDIS_OK)
return NULL;
return reply;
}
return NULL;
}
void *redisvCommand(redisContext *c, const char *format, va_list ap) {
if (redisvAppendCommand(c,format,ap) != REDIS_OK)
return NULL;
return __redisBlockForReply(c);
}
void *redisCommand(redisContext *c, const char *format, ...) {
va_list ap;
va_start(ap,format);
void *reply = redisvCommand(c,format,ap);
va_end(ap);
return reply;
}
void *redisCommandArgv(redisContext *c, int argc, const char **argv, const size_t *argvlen) {
if (redisAppendCommandArgv(c,argc,argv,argvlen) != REDIS_OK)
return NULL;
return __redisBlockForReply(c);
}
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