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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 13:40:54 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 13:40:54 +0000
commit317c0644ccf108aa23ef3fd8358bd66c2840bfc0 (patch)
treec417b3d25c86b775989cb5ac042f37611b626c8a /deps/hiredis/examples/example-redismoduleapi.c
parentInitial commit. (diff)
downloadredis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.tar.xz
redis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.zip
Adding upstream version 5:7.2.4.upstream/5%7.2.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'deps/hiredis/examples/example-redismoduleapi.c')
-rw-r--r--deps/hiredis/examples/example-redismoduleapi.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/deps/hiredis/examples/example-redismoduleapi.c b/deps/hiredis/examples/example-redismoduleapi.c
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+++ b/deps/hiredis/examples/example-redismoduleapi.c
@@ -0,0 +1,101 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+
+#include <hiredis.h>
+#include <async.h>
+#include <adapters/redismoduleapi.h>
+
+void debugCallback(redisAsyncContext *c, void *r, void *privdata) {
+ (void)privdata; //unused
+ redisReply *reply = r;
+ if (reply == NULL) {
+ /* The DEBUG SLEEP command will almost always fail, because we have set a 1 second timeout */
+ printf("`DEBUG SLEEP` error: %s\n", c->errstr ? c->errstr : "unknown error");
+ return;
+ }
+ /* Disconnect after receiving the reply of DEBUG SLEEP (which will not)*/
+ redisAsyncDisconnect(c);
+}
+
+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);
+
+ /* start another request that demonstrate timeout */
+ redisAsyncCommand(c, debugCallback, NULL, "DEBUG SLEEP %f", 1.5);
+}
+
+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");
+}
+
+/*
+ * This example requires Redis 7.0 or above.
+ *
+ * 1- Compile this file as a shared library. Directory of "redismodule.h" must
+ * be in the include path.
+ * gcc -fPIC -shared -I../../redis/src/ -I.. example-redismoduleapi.c -o example-redismoduleapi.so
+ *
+ * 2- Load module:
+ * redis-server --loadmodule ./example-redismoduleapi.so value
+ */
+int RedisModule_OnLoad(RedisModuleCtx *ctx, RedisModuleString **argv, int argc) {
+
+ int ret = RedisModule_Init(ctx, "example-redismoduleapi", 1, REDISMODULE_APIVER_1);
+ if (ret != REDISMODULE_OK) {
+ printf("error module init \n");
+ return REDISMODULE_ERR;
+ }
+
+ if (redisModuleCompatibilityCheck() != REDIS_OK) {
+ printf("Redis 7.0 or above is required! \n");
+ return REDISMODULE_ERR;
+ }
+
+ redisAsyncContext *c = redisAsyncConnect("127.0.0.1", 6379);
+ if (c->err) {
+ /* Let *c leak for now... */
+ printf("Error: %s\n", c->errstr);
+ return 1;
+ }
+
+ size_t len;
+ const char *val = RedisModule_StringPtrLen(argv[argc-1], &len);
+
+ RedisModuleCtx *module_ctx = RedisModule_GetDetachedThreadSafeContext(ctx);
+ redisModuleAttach(c, module_ctx);
+ redisAsyncSetConnectCallback(c,connectCallback);
+ redisAsyncSetDisconnectCallback(c,disconnectCallback);
+ redisAsyncSetTimeout(c, (struct timeval){ .tv_sec = 1, .tv_usec = 0});
+
+ /*
+ In this demo, we first `set key`, then `get key` to demonstrate the basic usage of the adapter.
+ Then in `getCallback`, we start a `debug sleep` command to create 1.5 second long request.
+ Because we have set a 1 second timeout to the connection, the command will always fail with a
+ timeout error, which is shown in the `debugCallback`.
+ */
+
+ redisAsyncCommand(c, NULL, NULL, "SET key %b", val, len);
+ redisAsyncCommand(c, getCallback, (char*)"end-1", "GET key");
+ return 0;
+}