From d859b4289958959c94ab6cda11fd64fe6a75e37d Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Thu, 3 Oct 2019 13:06:09 +0200
Subject: [PATCH] Modules: RM_Replicate() test module: initial implementation.

---
 tests/modules/Makefile    |  5 ++-
 tests/modules/propagate.c | 82 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 86 insertions(+), 1 deletion(-)
 create mode 100644 tests/modules/propagate.c

diff --git a/tests/modules/Makefile b/tests/modules/Makefile
index e669d8e5e..c1c8ffa2e 100644
--- a/tests/modules/Makefile
+++ b/tests/modules/Makefile
@@ -13,7 +13,7 @@ endif
 
 .SUFFIXES: .c .so .xo .o
 
-all: commandfilter.so testrdb.so fork.so infotest.so
+all: commandfilter.so testrdb.so fork.so infotest.so propagate.so
 
 .c.xo:
 	$(CC) -I../../src $(CFLAGS) $(SHOBJ_CFLAGS) -fPIC -c $< -o $@
@@ -22,6 +22,7 @@ commandfilter.xo: ../../src/redismodule.h
 fork.xo: ../../src/redismodule.h
 testrdb.xo: ../../src/redismodule.h
 infotest.xo: ../../src/redismodule.h
+propagate.xo: ../../src/redismodule.h
 
 commandfilter.so: commandfilter.xo
 	$(LD) -o $@ $< $(SHOBJ_LDFLAGS) $(LIBS) -lc
@@ -35,3 +36,5 @@ testrdb.so: testrdb.xo
 infotest.so: infotest.xo
 	$(LD) -o $@ $< $(SHOBJ_LDFLAGS) $(LIBS) -lc
 
+propagate.so: propagate.xo
+	$(LD) -o $@ $< $(SHOBJ_LDFLAGS) $(LIBS) -lc
diff --git a/tests/modules/propagate.c b/tests/modules/propagate.c
new file mode 100644
index 000000000..e08372dcf
--- /dev/null
+++ b/tests/modules/propagate.c
@@ -0,0 +1,82 @@
+/* This module is used to test the propagation (replication + AOF) of
+ * commands, via the RedisModule_Replicate() interface, in asynchronous
+ * contexts, such as callbacks not implementing commands, and thread safe
+ * contexts.
+ *
+ * We create a timer callback and a threads using a thread safe context.
+ * Using both we try to propagate counters increments, and later we check
+ * if the replica contains the changes as expected.
+ *
+ * -----------------------------------------------------------------------------
+ *
+ * Copyright (c) 2019, 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.
+ */
+
+#define REDISMODULE_EXPERIMENTAL_API
+#include "redismodule.h"
+
+/* Timer callback. */
+void timerHandler(RedisModuleCtx *ctx, void *data) {
+    REDISMODULE_NOT_USED(ctx);
+    REDISMODULE_NOT_USED(data);
+
+    static int times = 0;
+
+    printf("Fired!\n");
+    RedisModule_Replicate(ctx,"INCR","c","timer");
+    times++;
+
+    if (times < 10)
+        RedisModule_CreateTimer(ctx,100,timerHandler,NULL);
+}
+
+int propagateTestCommand(RedisModuleCtx *ctx, RedisModuleString **argv, int argc)
+{
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+
+    RedisModuleTimerID tid = RedisModule_CreateTimer(ctx,100,timerHandler,NULL);
+    REDISMODULE_NOT_USED(tid);
+
+    RedisModule_ReplyWithSimpleString(ctx,"OK");
+    return REDISMODULE_OK;
+}
+
+int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+    REDISMODULE_NOT_USED(argv);
+    REDISMODULE_NOT_USED(argc);
+
+    if (RedisModule_Init(ctx,"propagate-test",1,REDISMODULE_APIVER_1)
+            == REDISMODULE_ERR) return REDISMODULE_ERR;
+
+    if (RedisModule_CreateCommand(ctx,"propagate-test",
+                propagateTestCommand,
+                "",1,1,1) == REDISMODULE_ERR)
+            return REDISMODULE_ERR;
+    return REDISMODULE_OK;
+}