mirror of
http://github.com/valkey-io/valkey
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297 lines
11 KiB
C
297 lines
11 KiB
C
/* This module is used to test the server keyspace events API.
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*
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* -----------------------------------------------------------------------------
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*
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* Copyright (c) 2020, Meir Shpilraien <meir at redislabs dot com>
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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 "redismodule.h"
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#include <stdio.h>
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#include <string.h>
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/** stores all the keys on which we got 'loaded' keyspace notification **/
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RedisModuleDict *loaded_event_log = NULL;
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/** stores all the keys on which we got 'module' keyspace notification **/
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RedisModuleDict *module_event_log = NULL;
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static int KeySpace_NotificationLoaded(RedisModuleCtx *ctx, int type, const char *event, RedisModuleString *key){
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REDISMODULE_NOT_USED(ctx);
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REDISMODULE_NOT_USED(type);
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if(strcmp(event, "loaded") == 0){
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const char* keyName = RedisModule_StringPtrLen(key, NULL);
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int nokey;
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RedisModule_DictGetC(loaded_event_log, (void*)keyName, strlen(keyName), &nokey);
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if(nokey){
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RedisModule_DictSetC(loaded_event_log, (void*)keyName, strlen(keyName), RedisModule_HoldString(ctx, key));
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}
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}
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return REDISMODULE_OK;
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}
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static int KeySpace_NotificationGeneric(RedisModuleCtx *ctx, int type, const char *event, RedisModuleString *key) {
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REDISMODULE_NOT_USED(type);
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if (strcmp(event, "del") == 0) {
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RedisModuleString *copykey = RedisModule_CreateStringPrintf(ctx, "%s_copy", RedisModule_StringPtrLen(key, NULL));
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RedisModuleCallReply* rep = RedisModule_Call(ctx, "DEL", "s!", copykey);
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RedisModule_FreeString(ctx, copykey);
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RedisModule_FreeCallReply(rep);
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int ctx_flags = RedisModule_GetContextFlags(ctx);
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if (ctx_flags & REDISMODULE_CTX_FLAGS_LUA) {
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RedisModuleCallReply* rep = RedisModule_Call(ctx, "INCR", "c", "lua");
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RedisModule_FreeCallReply(rep);
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}
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if (ctx_flags & REDISMODULE_CTX_FLAGS_MULTI) {
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RedisModuleCallReply* rep = RedisModule_Call(ctx, "INCR", "c", "multi");
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RedisModule_FreeCallReply(rep);
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}
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}
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return REDISMODULE_OK;
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}
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static int KeySpace_NotificationModule(RedisModuleCtx *ctx, int type, const char *event, RedisModuleString *key) {
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REDISMODULE_NOT_USED(ctx);
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REDISMODULE_NOT_USED(type);
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REDISMODULE_NOT_USED(event);
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const char* keyName = RedisModule_StringPtrLen(key, NULL);
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int nokey;
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RedisModule_DictGetC(module_event_log, (void*)keyName, strlen(keyName), &nokey);
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if(nokey){
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RedisModule_DictSetC(module_event_log, (void*)keyName, strlen(keyName), RedisModule_HoldString(ctx, key));
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}
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return REDISMODULE_OK;
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}
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static int cmdNotify(RedisModuleCtx *ctx, RedisModuleString **argv, int argc){
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if(argc != 2){
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return RedisModule_WrongArity(ctx);
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}
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RedisModule_NotifyKeyspaceEvent(ctx, REDISMODULE_NOTIFY_MODULE, "notify", argv[1]);
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RedisModule_ReplyWithNull(ctx);
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return REDISMODULE_OK;
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}
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static int cmdIsModuleKeyNotified(RedisModuleCtx *ctx, RedisModuleString **argv, int argc){
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if(argc != 2){
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return RedisModule_WrongArity(ctx);
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}
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const char* key = RedisModule_StringPtrLen(argv[1], NULL);
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int nokey;
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RedisModuleString* keyStr = RedisModule_DictGetC(module_event_log, (void*)key, strlen(key), &nokey);
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RedisModule_ReplyWithArray(ctx, 2);
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RedisModule_ReplyWithLongLong(ctx, !nokey);
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if(nokey){
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RedisModule_ReplyWithNull(ctx);
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}else{
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RedisModule_ReplyWithString(ctx, keyStr);
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}
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return REDISMODULE_OK;
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}
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static int cmdIsKeyLoaded(RedisModuleCtx *ctx, RedisModuleString **argv, int argc){
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if(argc != 2){
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return RedisModule_WrongArity(ctx);
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}
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const char* key = RedisModule_StringPtrLen(argv[1], NULL);
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int nokey;
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RedisModuleString* keyStr = RedisModule_DictGetC(loaded_event_log, (void*)key, strlen(key), &nokey);
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RedisModule_ReplyWithArray(ctx, 2);
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RedisModule_ReplyWithLongLong(ctx, !nokey);
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if(nokey){
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RedisModule_ReplyWithNull(ctx);
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}else{
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RedisModule_ReplyWithString(ctx, keyStr);
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}
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return REDISMODULE_OK;
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}
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static int cmdDelKeyCopy(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
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if (argc != 2)
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return RedisModule_WrongArity(ctx);
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RedisModuleCallReply* rep = RedisModule_Call(ctx, "DEL", "s!", argv[1]);
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if (!rep) {
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RedisModule_ReplyWithError(ctx, "NULL reply returned");
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} else {
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RedisModule_ReplyWithCallReply(ctx, rep);
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RedisModule_FreeCallReply(rep);
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}
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return REDISMODULE_OK;
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}
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/* Call INCR and propagate using RM_Call with `!`. */
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static int cmdIncrCase1(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
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if (argc != 2)
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return RedisModule_WrongArity(ctx);
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RedisModuleCallReply* rep = RedisModule_Call(ctx, "INCR", "s!", argv[1]);
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if (!rep) {
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RedisModule_ReplyWithError(ctx, "NULL reply returned");
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} else {
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RedisModule_ReplyWithCallReply(ctx, rep);
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RedisModule_FreeCallReply(rep);
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}
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return REDISMODULE_OK;
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}
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/* Call INCR and propagate using RM_Replicate. */
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static int cmdIncrCase2(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
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if (argc != 2)
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return RedisModule_WrongArity(ctx);
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RedisModuleCallReply* rep = RedisModule_Call(ctx, "INCR", "s", argv[1]);
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if (!rep) {
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RedisModule_ReplyWithError(ctx, "NULL reply returned");
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} else {
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RedisModule_ReplyWithCallReply(ctx, rep);
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RedisModule_FreeCallReply(rep);
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}
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RedisModule_Replicate(ctx, "INCR", "s", argv[1]);
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return REDISMODULE_OK;
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}
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/* Call INCR and propagate using RM_ReplicateVerbatim. */
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static int cmdIncrCase3(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
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if (argc != 2)
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return RedisModule_WrongArity(ctx);
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RedisModuleCallReply* rep = RedisModule_Call(ctx, "INCR", "s", argv[1]);
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if (!rep) {
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RedisModule_ReplyWithError(ctx, "NULL reply returned");
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} else {
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RedisModule_ReplyWithCallReply(ctx, rep);
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RedisModule_FreeCallReply(rep);
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}
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RedisModule_ReplicateVerbatim(ctx);
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return REDISMODULE_OK;
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}
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/* This function must be present on each Redis module. It is used in order to
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* register the commands into the Redis server. */
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int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
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REDISMODULE_NOT_USED(argv);
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REDISMODULE_NOT_USED(argc);
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if (RedisModule_Init(ctx,"testkeyspace",1,REDISMODULE_APIVER_1) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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loaded_event_log = RedisModule_CreateDict(ctx);
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module_event_log = RedisModule_CreateDict(ctx);
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int keySpaceAll = RedisModule_GetKeyspaceNotificationFlagsAll();
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if (!(keySpaceAll & REDISMODULE_NOTIFY_LOADED)) {
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// REDISMODULE_NOTIFY_LOADED event are not supported we can not start
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return REDISMODULE_ERR;
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}
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if(RedisModule_SubscribeToKeyspaceEvents(ctx, REDISMODULE_NOTIFY_LOADED, KeySpace_NotificationLoaded) != REDISMODULE_OK){
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return REDISMODULE_ERR;
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}
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if(RedisModule_SubscribeToKeyspaceEvents(ctx, REDISMODULE_NOTIFY_GENERIC, KeySpace_NotificationGeneric) != REDISMODULE_OK){
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return REDISMODULE_ERR;
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}
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if(RedisModule_SubscribeToKeyspaceEvents(ctx, REDISMODULE_NOTIFY_MODULE, KeySpace_NotificationModule) != REDISMODULE_OK){
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return REDISMODULE_ERR;
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}
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if (RedisModule_CreateCommand(ctx,"keyspace.notify", cmdNotify,"",0,0,0) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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if (RedisModule_CreateCommand(ctx,"keyspace.is_module_key_notified", cmdIsModuleKeyNotified,"",0,0,0) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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if (RedisModule_CreateCommand(ctx,"keyspace.is_key_loaded", cmdIsKeyLoaded,"",0,0,0) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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if (RedisModule_CreateCommand(ctx, "keyspace.del_key_copy", cmdDelKeyCopy,
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"write", 0, 0, 0) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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if (RedisModule_CreateCommand(ctx, "keyspace.incr_case1", cmdIncrCase1,
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"write", 0, 0, 0) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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if (RedisModule_CreateCommand(ctx, "keyspace.incr_case2", cmdIncrCase2,
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"write", 0, 0, 0) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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if (RedisModule_CreateCommand(ctx, "keyspace.incr_case3", cmdIncrCase3,
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"write", 0, 0, 0) == REDISMODULE_ERR){
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return REDISMODULE_ERR;
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}
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return REDISMODULE_OK;
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}
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int RedisModule_OnUnload(RedisModuleCtx *ctx) {
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RedisModuleDictIter *iter = RedisModule_DictIteratorStartC(loaded_event_log, "^", NULL, 0);
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char* key;
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size_t keyLen;
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RedisModuleString* val;
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while((key = RedisModule_DictNextC(iter, &keyLen, (void**)&val))){
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RedisModule_FreeString(ctx, val);
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}
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RedisModule_FreeDict(ctx, loaded_event_log);
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RedisModule_DictIteratorStop(iter);
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loaded_event_log = NULL;
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iter = RedisModule_DictIteratorStartC(module_event_log, "^", NULL, 0);
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while((key = RedisModule_DictNextC(iter, &keyLen, (void**)&val))){
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RedisModule_FreeString(ctx, val);
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}
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RedisModule_FreeDict(ctx, module_event_log);
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RedisModule_DictIteratorStop(iter);
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module_event_log = NULL;
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return REDISMODULE_OK;
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}
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