mirror of
https://github.com/ZeroTier/ZeroTierOne
synced 2025-08-14 02:27:38 -07:00
update controller image and some dependencies
This commit is contained in:
Grant Limberg
parent
c1384422c3
commit
183a9d7088
667 changed files with 173907 additions and 17 deletions
887
ext/hiredis-1.0.2/async.c
Normal file
887
ext/hiredis-1.0.2/async.c
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@ -0,0 +1,887 @@
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/*
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* Copyright (c) 2009-2011, Salvatore Sanfilippo <antirez at gmail dot com>
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* Copyright (c) 2010-2011, Pieter Noordhuis <pcnoordhuis at gmail dot com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Redis nor the names of its contributors may be used
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* to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "fmacros.h"
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#include "alloc.h"
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#include <stdlib.h>
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#include <string.h>
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#ifndef _MSC_VER
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#include <strings.h>
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#endif
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#include <assert.h>
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#include <ctype.h>
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#include <errno.h>
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#include "async.h"
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#include "net.h"
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#include "dict.c"
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#include "sds.h"
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#include "win32.h"
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#include "async_private.h"
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/* Forward declarations of hiredis.c functions */
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int __redisAppendCommand(redisContext *c, const char *cmd, size_t len);
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void __redisSetError(redisContext *c, int type, const char *str);
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/* Functions managing dictionary of callbacks for pub/sub. */
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static unsigned int callbackHash(const void *key) {
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return dictGenHashFunction((const unsigned char *)key,
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sdslen((const sds)key));
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}
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static void *callbackValDup(void *privdata, const void *src) {
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((void) privdata);
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redisCallback *dup;
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dup = hi_malloc(sizeof(*dup));
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if (dup == NULL)
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return NULL;
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memcpy(dup,src,sizeof(*dup));
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return dup;
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}
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static int callbackKeyCompare(void *privdata, const void *key1, const void *key2) {
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int l1, l2;
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((void) privdata);
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l1 = sdslen((const sds)key1);
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l2 = sdslen((const sds)key2);
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if (l1 != l2) return 0;
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return memcmp(key1,key2,l1) == 0;
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}
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static void callbackKeyDestructor(void *privdata, void *key) {
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((void) privdata);
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sdsfree((sds)key);
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}
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static void callbackValDestructor(void *privdata, void *val) {
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((void) privdata);
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hi_free(val);
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}
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static dictType callbackDict = {
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callbackHash,
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NULL,
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callbackValDup,
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callbackKeyCompare,
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callbackKeyDestructor,
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callbackValDestructor
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};
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static redisAsyncContext *redisAsyncInitialize(redisContext *c) {
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redisAsyncContext *ac;
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dict *channels = NULL, *patterns = NULL;
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channels = dictCreate(&callbackDict,NULL);
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if (channels == NULL)
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goto oom;
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patterns = dictCreate(&callbackDict,NULL);
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if (patterns == NULL)
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goto oom;
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ac = hi_realloc(c,sizeof(redisAsyncContext));
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if (ac == NULL)
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goto oom;
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c = &(ac->c);
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/* The regular connect functions will always set the flag REDIS_CONNECTED.
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* For the async API, we want to wait until the first write event is
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* received up before setting this flag, so reset it here. */
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c->flags &= ~REDIS_CONNECTED;
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ac->err = 0;
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ac->errstr = NULL;
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ac->data = NULL;
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ac->dataCleanup = NULL;
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ac->ev.data = NULL;
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ac->ev.addRead = NULL;
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ac->ev.delRead = NULL;
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ac->ev.addWrite = NULL;
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ac->ev.delWrite = NULL;
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ac->ev.cleanup = NULL;
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ac->ev.scheduleTimer = NULL;
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ac->onConnect = NULL;
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ac->onDisconnect = NULL;
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ac->replies.head = NULL;
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ac->replies.tail = NULL;
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ac->sub.invalid.head = NULL;
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ac->sub.invalid.tail = NULL;
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ac->sub.channels = channels;
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ac->sub.patterns = patterns;
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return ac;
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oom:
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if (channels) dictRelease(channels);
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if (patterns) dictRelease(patterns);
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return NULL;
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}
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/* We want the error field to be accessible directly instead of requiring
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* an indirection to the redisContext struct. */
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static void __redisAsyncCopyError(redisAsyncContext *ac) {
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if (!ac)
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return;
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redisContext *c = &(ac->c);
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ac->err = c->err;
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ac->errstr = c->errstr;
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}
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redisAsyncContext *redisAsyncConnectWithOptions(const redisOptions *options) {
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redisOptions myOptions = *options;
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redisContext *c;
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redisAsyncContext *ac;
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/* Clear any erroneously set sync callback and flag that we don't want to
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* use freeReplyObject by default. */
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myOptions.push_cb = NULL;
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myOptions.options |= REDIS_OPT_NO_PUSH_AUTOFREE;
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myOptions.options |= REDIS_OPT_NONBLOCK;
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c = redisConnectWithOptions(&myOptions);
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if (c == NULL) {
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return NULL;
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}
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ac = redisAsyncInitialize(c);
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if (ac == NULL) {
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redisFree(c);
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return NULL;
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}
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/* Set any configured async push handler */
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redisAsyncSetPushCallback(ac, myOptions.async_push_cb);
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__redisAsyncCopyError(ac);
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return ac;
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}
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redisAsyncContext *redisAsyncConnect(const char *ip, int port) {
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redisOptions options = {0};
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REDIS_OPTIONS_SET_TCP(&options, ip, port);
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return redisAsyncConnectWithOptions(&options);
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}
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redisAsyncContext *redisAsyncConnectBind(const char *ip, int port,
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const char *source_addr) {
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redisOptions options = {0};
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REDIS_OPTIONS_SET_TCP(&options, ip, port);
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options.endpoint.tcp.source_addr = source_addr;
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return redisAsyncConnectWithOptions(&options);
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}
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redisAsyncContext *redisAsyncConnectBindWithReuse(const char *ip, int port,
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const char *source_addr) {
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redisOptions options = {0};
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REDIS_OPTIONS_SET_TCP(&options, ip, port);
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options.options |= REDIS_OPT_REUSEADDR;
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options.endpoint.tcp.source_addr = source_addr;
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return redisAsyncConnectWithOptions(&options);
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}
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redisAsyncContext *redisAsyncConnectUnix(const char *path) {
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redisOptions options = {0};
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REDIS_OPTIONS_SET_UNIX(&options, path);
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return redisAsyncConnectWithOptions(&options);
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}
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int redisAsyncSetConnectCallback(redisAsyncContext *ac, redisConnectCallback *fn) {
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if (ac->onConnect == NULL) {
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ac->onConnect = fn;
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/* The common way to detect an established connection is to wait for
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* the first write event to be fired. This assumes the related event
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* library functions are already set. */
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_EL_ADD_WRITE(ac);
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return REDIS_OK;
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}
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return REDIS_ERR;
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}
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int redisAsyncSetDisconnectCallback(redisAsyncContext *ac, redisDisconnectCallback *fn) {
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if (ac->onDisconnect == NULL) {
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ac->onDisconnect = fn;
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return REDIS_OK;
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}
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return REDIS_ERR;
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}
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/* Helper functions to push/shift callbacks */
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static int __redisPushCallback(redisCallbackList *list, redisCallback *source) {
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redisCallback *cb;
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/* Copy callback from stack to heap */
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cb = hi_malloc(sizeof(*cb));
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if (cb == NULL)
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return REDIS_ERR_OOM;
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if (source != NULL) {
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memcpy(cb,source,sizeof(*cb));
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cb->next = NULL;
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}
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/* Store callback in list */
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if (list->head == NULL)
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list->head = cb;
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if (list->tail != NULL)
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list->tail->next = cb;
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list->tail = cb;
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return REDIS_OK;
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}
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static int __redisShiftCallback(redisCallbackList *list, redisCallback *target) {
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redisCallback *cb = list->head;
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if (cb != NULL) {
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list->head = cb->next;
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if (cb == list->tail)
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list->tail = NULL;
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/* Copy callback from heap to stack */
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if (target != NULL)
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memcpy(target,cb,sizeof(*cb));
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hi_free(cb);
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return REDIS_OK;
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}
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return REDIS_ERR;
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}
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static void __redisRunCallback(redisAsyncContext *ac, redisCallback *cb, redisReply *reply) {
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redisContext *c = &(ac->c);
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if (cb->fn != NULL) {
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c->flags |= REDIS_IN_CALLBACK;
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cb->fn(ac,reply,cb->privdata);
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c->flags &= ~REDIS_IN_CALLBACK;
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}
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}
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static void __redisRunPushCallback(redisAsyncContext *ac, redisReply *reply) {
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if (ac->push_cb != NULL) {
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ac->c.flags |= REDIS_IN_CALLBACK;
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ac->push_cb(ac, reply);
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ac->c.flags &= ~REDIS_IN_CALLBACK;
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}
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}
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/* Helper function to free the context. */
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static void __redisAsyncFree(redisAsyncContext *ac) {
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redisContext *c = &(ac->c);
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redisCallback cb;
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dictIterator *it;
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dictEntry *de;
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/* Execute pending callbacks with NULL reply. */
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while (__redisShiftCallback(&ac->replies,&cb) == REDIS_OK)
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__redisRunCallback(ac,&cb,NULL);
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/* Execute callbacks for invalid commands */
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while (__redisShiftCallback(&ac->sub.invalid,&cb) == REDIS_OK)
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__redisRunCallback(ac,&cb,NULL);
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/* Run subscription callbacks with NULL reply */
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if (ac->sub.channels) {
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it = dictGetIterator(ac->sub.channels);
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if (it != NULL) {
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while ((de = dictNext(it)) != NULL)
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__redisRunCallback(ac,dictGetEntryVal(de),NULL);
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dictReleaseIterator(it);
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}
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dictRelease(ac->sub.channels);
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}
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if (ac->sub.patterns) {
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it = dictGetIterator(ac->sub.patterns);
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if (it != NULL) {
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while ((de = dictNext(it)) != NULL)
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__redisRunCallback(ac,dictGetEntryVal(de),NULL);
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dictReleaseIterator(it);
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}
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dictRelease(ac->sub.patterns);
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}
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/* Signal event lib to clean up */
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_EL_CLEANUP(ac);
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|
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/* Execute disconnect callback. When redisAsyncFree() initiated destroying
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* this context, the status will always be REDIS_OK. */
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if (ac->onDisconnect && (c->flags & REDIS_CONNECTED)) {
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if (c->flags & REDIS_FREEING) {
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ac->onDisconnect(ac,REDIS_OK);
|
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} else {
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ac->onDisconnect(ac,(ac->err == 0) ? REDIS_OK : REDIS_ERR);
|
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}
|
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}
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|
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if (ac->dataCleanup) {
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ac->dataCleanup(ac->data);
|
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}
|
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|
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/* Cleanup self */
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redisFree(c);
|
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}
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|
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/* Free the async context. When this function is called from a callback,
|
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* control needs to be returned to redisProcessCallbacks() before actual
|
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* free'ing. To do so, a flag is set on the context which is picked up by
|
||||
* redisProcessCallbacks(). Otherwise, the context is immediately free'd. */
|
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void redisAsyncFree(redisAsyncContext *ac) {
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||||
redisContext *c = &(ac->c);
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c->flags |= REDIS_FREEING;
|
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if (!(c->flags & REDIS_IN_CALLBACK))
|
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__redisAsyncFree(ac);
|
||||
}
|
||||
|
||||
/* Helper function to make the disconnect happen and clean up. */
|
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void __redisAsyncDisconnect(redisAsyncContext *ac) {
|
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redisContext *c = &(ac->c);
|
||||
|
||||
/* Make sure error is accessible if there is any */
|
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__redisAsyncCopyError(ac);
|
||||
|
||||
if (ac->err == 0) {
|
||||
/* For clean disconnects, there should be no pending callbacks. */
|
||||
int ret = __redisShiftCallback(&ac->replies,NULL);
|
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assert(ret == REDIS_ERR);
|
||||
} else {
|
||||
/* Disconnection is caused by an error, make sure that pending
|
||||
* callbacks cannot call new commands. */
|
||||
c->flags |= REDIS_DISCONNECTING;
|
||||
}
|
||||
|
||||
/* cleanup event library on disconnect.
|
||||
* this is safe to call multiple times */
|
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_EL_CLEANUP(ac);
|
||||
|
||||
/* For non-clean disconnects, __redisAsyncFree() will execute pending
|
||||
* callbacks with a NULL-reply. */
|
||||
if (!(c->flags & REDIS_NO_AUTO_FREE)) {
|
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__redisAsyncFree(ac);
|
||||
}
|
||||
}
|
||||
|
||||
/* Tries to do a clean disconnect from Redis, meaning it stops new commands
|
||||
* from being issued, but tries to flush the output buffer and execute
|
||||
* callbacks for all remaining replies. When this function is called from a
|
||||
* callback, there might be more replies and we can safely defer disconnecting
|
||||
* to redisProcessCallbacks(). Otherwise, we can only disconnect immediately
|
||||
* when there are no pending callbacks. */
|
||||
void redisAsyncDisconnect(redisAsyncContext *ac) {
|
||||
redisContext *c = &(ac->c);
|
||||
c->flags |= REDIS_DISCONNECTING;
|
||||
|
||||
/** unset the auto-free flag here, because disconnect undoes this */
|
||||
c->flags &= ~REDIS_NO_AUTO_FREE;
|
||||
if (!(c->flags & REDIS_IN_CALLBACK) && ac->replies.head == NULL)
|
||||
__redisAsyncDisconnect(ac);
|
||||
}
|
||||
|
||||
static int __redisGetSubscribeCallback(redisAsyncContext *ac, redisReply *reply, redisCallback *dstcb) {
|
||||
redisContext *c = &(ac->c);
|
||||
dict *callbacks;
|
||||
redisCallback *cb;
|
||||
dictEntry *de;
|
||||
int pvariant;
|
||||
char *stype;
|
||||
sds sname;
|
||||
|
||||
/* Custom reply functions are not supported for pub/sub. This will fail
|
||||
* very hard when they are used... */
|
||||
if (reply->type == REDIS_REPLY_ARRAY || reply->type == REDIS_REPLY_PUSH) {
|
||||
assert(reply->elements >= 2);
|
||||
assert(reply->element[0]->type == REDIS_REPLY_STRING);
|
||||
stype = reply->element[0]->str;
|
||||
pvariant = (tolower(stype[0]) == 'p') ? 1 : 0;
|
||||
|
||||
if (pvariant)
|
||||
callbacks = ac->sub.patterns;
|
||||
else
|
||||
callbacks = ac->sub.channels;
|
||||
|
||||
/* Locate the right callback */
|
||||
assert(reply->element[1]->type == REDIS_REPLY_STRING);
|
||||
sname = sdsnewlen(reply->element[1]->str,reply->element[1]->len);
|
||||
if (sname == NULL)
|
||||
goto oom;
|
||||
|
||||
de = dictFind(callbacks,sname);
|
||||
if (de != NULL) {
|
||||
cb = dictGetEntryVal(de);
|
||||
|
||||
/* If this is an subscribe reply decrease pending counter. */
|
||||
if (strcasecmp(stype+pvariant,"subscribe") == 0) {
|
||||
cb->pending_subs -= 1;
|
||||
}
|
||||
|
||||
memcpy(dstcb,cb,sizeof(*dstcb));
|
||||
|
||||
/* If this is an unsubscribe message, remove it. */
|
||||
if (strcasecmp(stype+pvariant,"unsubscribe") == 0) {
|
||||
if (cb->pending_subs == 0)
|
||||
dictDelete(callbacks,sname);
|
||||
|
||||
/* If this was the last unsubscribe message, revert to
|
||||
* non-subscribe mode. */
|
||||
assert(reply->element[2]->type == REDIS_REPLY_INTEGER);
|
||||
|
||||
/* Unset subscribed flag only when no pipelined pending subscribe. */
|
||||
if (reply->element[2]->integer == 0
|
||||
&& dictSize(ac->sub.channels) == 0
|
||||
&& dictSize(ac->sub.patterns) == 0)
|
||||
c->flags &= ~REDIS_SUBSCRIBED;
|
||||
}
|
||||
}
|
||||
sdsfree(sname);
|
||||
} else {
|
||||
/* Shift callback for invalid commands. */
|
||||
__redisShiftCallback(&ac->sub.invalid,dstcb);
|
||||
}
|
||||
return REDIS_OK;
|
||||
oom:
|
||||
__redisSetError(&(ac->c), REDIS_ERR_OOM, "Out of memory");
|
||||
return REDIS_ERR;
|
||||
}
|
||||
|
||||
#define redisIsSpontaneousPushReply(r) \
|
||||
(redisIsPushReply(r) && !redisIsSubscribeReply(r))
|
||||
|
||||
static int redisIsSubscribeReply(redisReply *reply) {
|
||||
char *str;
|
||||
size_t len, off;
|
||||
|
||||
/* We will always have at least one string with the subscribe/message type */
|
||||
if (reply->elements < 1 || reply->element[0]->type != REDIS_REPLY_STRING ||
|
||||
reply->element[0]->len < sizeof("message") - 1)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Get the string/len moving past 'p' if needed */
|
||||
off = tolower(reply->element[0]->str[0]) == 'p';
|
||||
str = reply->element[0]->str + off;
|
||||
len = reply->element[0]->len - off;
|
||||
|
||||
return !strncasecmp(str, "subscribe", len) ||
|
||||
!strncasecmp(str, "message", len);
|
||||
|
||||
}
|
||||
|
||||
void redisProcessCallbacks(redisAsyncContext *ac) {
|
||||
redisContext *c = &(ac->c);
|
||||
redisCallback cb = {NULL, NULL, 0, NULL};
|
||||
void *reply = NULL;
|
||||
int status;
|
||||
|
||||
while((status = redisGetReply(c,&reply)) == REDIS_OK) {
|
||||
if (reply == NULL) {
|
||||
/* When the connection is being disconnected and there are
|
||||
* no more replies, this is the cue to really disconnect. */
|
||||
if (c->flags & REDIS_DISCONNECTING && sdslen(c->obuf) == 0
|
||||
&& ac->replies.head == NULL) {
|
||||
__redisAsyncDisconnect(ac);
|
||||
return;
|
||||
}
|
||||
|
||||
/* If monitor mode, repush callback */
|
||||
if(c->flags & REDIS_MONITORING) {
|
||||
__redisPushCallback(&ac->replies,&cb);
|
||||
}
|
||||
|
||||
/* When the connection is not being disconnected, simply stop
|
||||
* trying to get replies and wait for the next loop tick. */
|
||||
break;
|
||||
}
|
||||
|
||||
/* Send any non-subscribe related PUSH messages to our PUSH handler
|
||||
* while allowing subscribe related PUSH messages to pass through.
|
||||
* This allows existing code to be backward compatible and work in
|
||||
* either RESP2 or RESP3 mode. */
|
||||
if (redisIsSpontaneousPushReply(reply)) {
|
||||
__redisRunPushCallback(ac, reply);
|
||||
c->reader->fn->freeObject(reply);
|
||||
continue;
|
||||
}
|
||||
|
||||
/* Even if the context is subscribed, pending regular
|
||||
* callbacks will get a reply before pub/sub messages arrive. */
|
||||
if (__redisShiftCallback(&ac->replies,&cb) != REDIS_OK) {
|
||||
/*
|
||||
* A spontaneous reply in a not-subscribed context can be the error
|
||||
* reply that is sent when a new connection exceeds the maximum
|
||||
* number of allowed connections on the server side.
|
||||
*
|
||||
* This is seen as an error instead of a regular reply because the
|
||||
* server closes the connection after sending it.
|
||||
*
|
||||
* To prevent the error from being overwritten by an EOF error the
|
||||
* connection is closed here. See issue #43.
|
||||
*
|
||||
* Another possibility is that the server is loading its dataset.
|
||||
* In this case we also want to close the connection, and have the
|
||||
* user wait until the server is ready to take our request.
|
||||
*/
|
||||
if (((redisReply*)reply)->type == REDIS_REPLY_ERROR) {
|
||||
c->err = REDIS_ERR_OTHER;
|
||||
snprintf(c->errstr,sizeof(c->errstr),"%s",((redisReply*)reply)->str);
|
||||
c->reader->fn->freeObject(reply);
|
||||
__redisAsyncDisconnect(ac);
|
||||
return;
|
||||
}
|
||||
/* No more regular callbacks and no errors, the context *must* be subscribed or monitoring. */
|
||||
assert((c->flags & REDIS_SUBSCRIBED || c->flags & REDIS_MONITORING));
|
||||
if(c->flags & REDIS_SUBSCRIBED)
|
||||
__redisGetSubscribeCallback(ac,reply,&cb);
|
||||
}
|
||||
|
||||
if (cb.fn != NULL) {
|
||||
__redisRunCallback(ac,&cb,reply);
|
||||
c->reader->fn->freeObject(reply);
|
||||
|
||||
/* Proceed with free'ing when redisAsyncFree() was called. */
|
||||
if (c->flags & REDIS_FREEING) {
|
||||
__redisAsyncFree(ac);
|
||||
return;
|
||||
}
|
||||
} else {
|
||||
/* No callback for this reply. This can either be a NULL callback,
|
||||
* or there were no callbacks to begin with. Either way, don't
|
||||
* abort with an error, but simply ignore it because the client
|
||||
* doesn't know what the server will spit out over the wire. */
|
||||
c->reader->fn->freeObject(reply);
|
||||
}
|
||||
}
|
||||
|
||||
/* Disconnect when there was an error reading the reply */
|
||||
if (status != REDIS_OK)
|
||||
__redisAsyncDisconnect(ac);
|
||||
}
|
||||
|
||||
static void __redisAsyncHandleConnectFailure(redisAsyncContext *ac) {
|
||||
if (ac->onConnect) ac->onConnect(ac, REDIS_ERR);
|
||||
__redisAsyncDisconnect(ac);
|
||||
}
|
||||
|
||||
/* Internal helper function to detect socket status the first time a read or
|
||||
* write event fires. When connecting was not successful, the connect callback
|
||||
* is called with a REDIS_ERR status and the context is free'd. */
|
||||
static int __redisAsyncHandleConnect(redisAsyncContext *ac) {
|
||||
int completed = 0;
|
||||
redisContext *c = &(ac->c);
|
||||
|
||||
if (redisCheckConnectDone(c, &completed) == REDIS_ERR) {
|
||||
/* Error! */
|
||||
redisCheckSocketError(c);
|
||||
__redisAsyncHandleConnectFailure(ac);
|
||||
return REDIS_ERR;
|
||||
} else if (completed == 1) {
|
||||
/* connected! */
|
||||
if (c->connection_type == REDIS_CONN_TCP &&
|
||||
redisSetTcpNoDelay(c) == REDIS_ERR) {
|
||||
__redisAsyncHandleConnectFailure(ac);
|
||||
return REDIS_ERR;
|
||||
}
|
||||
|
||||
if (ac->onConnect) ac->onConnect(ac, REDIS_OK);
|
||||
c->flags |= REDIS_CONNECTED;
|
||||
return REDIS_OK;
|
||||
} else {
|
||||
return REDIS_OK;
|
||||
}
|
||||
}
|
||||
|
||||
void redisAsyncRead(redisAsyncContext *ac) {
|
||||
redisContext *c = &(ac->c);
|
||||
|
||||
if (redisBufferRead(c) == REDIS_ERR) {
|
||||
__redisAsyncDisconnect(ac);
|
||||
} else {
|
||||
/* Always re-schedule reads */
|
||||
_EL_ADD_READ(ac);
|
||||
redisProcessCallbacks(ac);
|
||||
}
|
||||
}
|
||||
|
||||
/* This function should be called when the socket is readable.
|
||||
* It processes all replies that can be read and executes their callbacks.
|
||||
*/
|
||||
void redisAsyncHandleRead(redisAsyncContext *ac) {
|
||||
redisContext *c = &(ac->c);
|
||||
|
||||
if (!(c->flags & REDIS_CONNECTED)) {
|
||||
/* Abort connect was not successful. */
|
||||
if (__redisAsyncHandleConnect(ac) != REDIS_OK)
|
||||
return;
|
||||
/* Try again later when the context is still not connected. */
|
||||
if (!(c->flags & REDIS_CONNECTED))
|
||||
return;
|
||||
}
|
||||
|
||||
c->funcs->async_read(ac);
|
||||
}
|
||||
|
||||
void redisAsyncWrite(redisAsyncContext *ac) {
|
||||
redisContext *c = &(ac->c);
|
||||
int done = 0;
|
||||
|
||||
if (redisBufferWrite(c,&done) == REDIS_ERR) {
|
||||
__redisAsyncDisconnect(ac);
|
||||
} else {
|
||||
/* Continue writing when not done, stop writing otherwise */
|
||||
if (!done)
|
||||
_EL_ADD_WRITE(ac);
|
||||
else
|
||||
_EL_DEL_WRITE(ac);
|
||||
|
||||
/* Always schedule reads after writes */
|
||||
_EL_ADD_READ(ac);
|
||||
}
|
||||
}
|
||||
|
||||
void redisAsyncHandleWrite(redisAsyncContext *ac) {
|
||||
redisContext *c = &(ac->c);
|
||||
|
||||
if (!(c->flags & REDIS_CONNECTED)) {
|
||||
/* Abort connect was not successful. */
|
||||
if (__redisAsyncHandleConnect(ac) != REDIS_OK)
|
||||
return;
|
||||
/* Try again later when the context is still not connected. */
|
||||
if (!(c->flags & REDIS_CONNECTED))
|
||||
return;
|
||||
}
|
||||
|
||||
c->funcs->async_write(ac);
|
||||
}
|
||||
|
||||
void redisAsyncHandleTimeout(redisAsyncContext *ac) {
|
||||
redisContext *c = &(ac->c);
|
||||
redisCallback cb;
|
||||
|
||||
if ((c->flags & REDIS_CONNECTED) && ac->replies.head == NULL) {
|
||||
/* Nothing to do - just an idle timeout */
|
||||
return;
|
||||
}
|
||||
|
||||
if (!c->err) {
|
||||
__redisSetError(c, REDIS_ERR_TIMEOUT, "Timeout");
|
||||
}
|
||||
|
||||
if (!(c->flags & REDIS_CONNECTED) && ac->onConnect) {
|
||||
ac->onConnect(ac, REDIS_ERR);
|
||||
}
|
||||
|
||||
while (__redisShiftCallback(&ac->replies, &cb) == REDIS_OK) {
|
||||
__redisRunCallback(ac, &cb, NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
* TODO: Don't automatically sever the connection,
|
||||
* rather, allow to ignore <x> responses before the queue is clear
|
||||
*/
|
||||
__redisAsyncDisconnect(ac);
|
||||
}
|
||||
|
||||
/* Sets a pointer to the first argument and its length starting at p. Returns
|
||||
* the number of bytes to skip to get to the following argument. */
|
||||
static const char *nextArgument(const char *start, const char **str, size_t *len) {
|
||||
const char *p = start;
|
||||
if (p[0] != '$') {
|
||||
p = strchr(p,'$');
|
||||
if (p == NULL) return NULL;
|
||||
}
|
||||
|
||||
*len = (int)strtol(p+1,NULL,10);
|
||||
p = strchr(p,'\r');
|
||||
assert(p);
|
||||
*str = p+2;
|
||||
return p+2+(*len)+2;
|
||||
}
|
||||
|
||||
/* Helper function for the redisAsyncCommand* family of functions. Writes a
|
||||
* formatted command to the output buffer and registers the provided callback
|
||||
* function with the context. */
|
||||
static int __redisAsyncCommand(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, const char *cmd, size_t len) {
|
||||
redisContext *c = &(ac->c);
|
||||
redisCallback cb;
|
||||
struct dict *cbdict;
|
||||
dictEntry *de;
|
||||
redisCallback *existcb;
|
||||
int pvariant, hasnext;
|
||||
const char *cstr, *astr;
|
||||
size_t clen, alen;
|
||||
const char *p;
|
||||
sds sname;
|
||||
int ret;
|
||||
|
||||
/* Don't accept new commands when the connection is about to be closed. */
|
||||
if (c->flags & (REDIS_DISCONNECTING | REDIS_FREEING)) return REDIS_ERR;
|
||||
|
||||
/* Setup callback */
|
||||
cb.fn = fn;
|
||||
cb.privdata = privdata;
|
||||
cb.pending_subs = 1;
|
||||
|
||||
/* Find out which command will be appended. */
|
||||
p = nextArgument(cmd,&cstr,&clen);
|
||||
assert(p != NULL);
|
||||
hasnext = (p[0] == '$');
|
||||
pvariant = (tolower(cstr[0]) == 'p') ? 1 : 0;
|
||||
cstr += pvariant;
|
||||
clen -= pvariant;
|
||||
|
||||
if (hasnext && strncasecmp(cstr,"subscribe\r\n",11) == 0) {
|
||||
c->flags |= REDIS_SUBSCRIBED;
|
||||
|
||||
/* Add every channel/pattern to the list of subscription callbacks. */
|
||||
while ((p = nextArgument(p,&astr,&alen)) != NULL) {
|
||||
sname = sdsnewlen(astr,alen);
|
||||
if (sname == NULL)
|
||||
goto oom;
|
||||
|
||||
if (pvariant)
|
||||
cbdict = ac->sub.patterns;
|
||||
else
|
||||
cbdict = ac->sub.channels;
|
||||
|
||||
de = dictFind(cbdict,sname);
|
||||
|
||||
if (de != NULL) {
|
||||
existcb = dictGetEntryVal(de);
|
||||
cb.pending_subs = existcb->pending_subs + 1;
|
||||
}
|
||||
|
||||
ret = dictReplace(cbdict,sname,&cb);
|
||||
|
||||
if (ret == 0) sdsfree(sname);
|
||||
}
|
||||
} else if (strncasecmp(cstr,"unsubscribe\r\n",13) == 0) {
|
||||
/* It is only useful to call (P)UNSUBSCRIBE when the context is
|
||||
* subscribed to one or more channels or patterns. */
|
||||
if (!(c->flags & REDIS_SUBSCRIBED)) return REDIS_ERR;
|
||||
|
||||
/* (P)UNSUBSCRIBE does not have its own response: every channel or
|
||||
* pattern that is unsubscribed will receive a message. This means we
|
||||
* should not append a callback function for this command. */
|
||||
} else if(strncasecmp(cstr,"monitor\r\n",9) == 0) {
|
||||
/* Set monitor flag and push callback */
|
||||
c->flags |= REDIS_MONITORING;
|
||||
__redisPushCallback(&ac->replies,&cb);
|
||||
} else {
|
||||
if (c->flags & REDIS_SUBSCRIBED)
|
||||
/* This will likely result in an error reply, but it needs to be
|
||||
* received and passed to the callback. */
|
||||
__redisPushCallback(&ac->sub.invalid,&cb);
|
||||
else
|
||||
__redisPushCallback(&ac->replies,&cb);
|
||||
}
|
||||
|
||||
__redisAppendCommand(c,cmd,len);
|
||||
|
||||
/* Always schedule a write when the write buffer is non-empty */
|
||||
_EL_ADD_WRITE(ac);
|
||||
|
||||
return REDIS_OK;
|
||||
oom:
|
||||
__redisSetError(&(ac->c), REDIS_ERR_OOM, "Out of memory");
|
||||
return REDIS_ERR;
|
||||
}
|
||||
|
||||
int redisvAsyncCommand(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, const char *format, va_list ap) {
|
||||
char *cmd;
|
||||
int len;
|
||||
int status;
|
||||
len = redisvFormatCommand(&cmd,format,ap);
|
||||
|
||||
/* We don't want to pass -1 or -2 to future functions as a length. */
|
||||
if (len < 0)
|
||||
return REDIS_ERR;
|
||||
|
||||
status = __redisAsyncCommand(ac,fn,privdata,cmd,len);
|
||||
hi_free(cmd);
|
||||
return status;
|
||||
}
|
||||
|
||||
int redisAsyncCommand(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, const char *format, ...) {
|
||||
va_list ap;
|
||||
int status;
|
||||
va_start(ap,format);
|
||||
status = redisvAsyncCommand(ac,fn,privdata,format,ap);
|
||||
va_end(ap);
|
||||
return status;
|
||||
}
|
||||
|
||||
int redisAsyncCommandArgv(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, int argc, const char **argv, const size_t *argvlen) {
|
||||
sds cmd;
|
||||
int len;
|
||||
int status;
|
||||
len = redisFormatSdsCommandArgv(&cmd,argc,argv,argvlen);
|
||||
if (len < 0)
|
||||
return REDIS_ERR;
|
||||
status = __redisAsyncCommand(ac,fn,privdata,cmd,len);
|
||||
sdsfree(cmd);
|
||||
return status;
|
||||
}
|
||||
|
||||
int redisAsyncFormattedCommand(redisAsyncContext *ac, redisCallbackFn *fn, void *privdata, const char *cmd, size_t len) {
|
||||
int status = __redisAsyncCommand(ac,fn,privdata,cmd,len);
|
||||
return status;
|
||||
}
|
||||
|
||||
redisAsyncPushFn *redisAsyncSetPushCallback(redisAsyncContext *ac, redisAsyncPushFn *fn) {
|
||||
redisAsyncPushFn *old = ac->push_cb;
|
||||
ac->push_cb = fn;
|
||||
return old;
|
||||
}
|
||||
|
||||
int redisAsyncSetTimeout(redisAsyncContext *ac, struct timeval tv) {
|
||||
if (!ac->c.command_timeout) {
|
||||
ac->c.command_timeout = hi_calloc(1, sizeof(tv));
|
||||
if (ac->c.command_timeout == NULL) {
|
||||
__redisSetError(&ac->c, REDIS_ERR_OOM, "Out of memory");
|
||||
__redisAsyncCopyError(ac);
|
||||
return REDIS_ERR;
|
||||
}
|
||||
}
|
||||
|
||||
if (tv.tv_sec != ac->c.command_timeout->tv_sec ||
|
||||
tv.tv_usec != ac->c.command_timeout->tv_usec)
|
||||
{
|
||||
*ac->c.command_timeout = tv;
|
||||
}
|
||||
|
||||
return REDIS_OK;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue