1 files changed, 144 insertions, 0 deletions
diff --git a/adapters/redismoduleapi.h b/adapters/redismoduleapi.h
new file mode 100644
index 0000000..8a076fe
--- /dev/null
+++ b/adapters/redismoduleapi.h
@@ -0,0 +1,144 @@
+#ifndef __HIREDIS_REDISMODULEAPI_H__
+#define __HIREDIS_REDISMODULEAPI_H__
+
+#include "redismodule.h"
+
+#include "../async.h"
+#include "../hiredis.h"
+
+#include <sys/types.h>
+
+typedef struct redisModuleEvents {
+    redisAsyncContext *context;
+    RedisModuleCtx *module_ctx;
+    int fd;
+    int reading, writing;
+    int timer_active;
+    RedisModuleTimerID timer_id;
+} redisModuleEvents;
+
+static inline void redisModuleReadEvent(int fd, void *privdata, int mask) {
+    (void) fd;
+    (void) mask;
+
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    redisAsyncHandleRead(e->context);
+}
+
+static inline void redisModuleWriteEvent(int fd, void *privdata, int mask) {
+    (void) fd;
+    (void) mask;
+
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    redisAsyncHandleWrite(e->context);
+}
+
+static inline void redisModuleAddRead(void *privdata) {
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    if (!e->reading) {
+        e->reading = 1;
+        RedisModule_EventLoopAdd(e->fd, REDISMODULE_EVENTLOOP_READABLE, redisModuleReadEvent, e);
+    }
+}
+
+static inline void redisModuleDelRead(void *privdata) {
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    if (e->reading) {
+        e->reading = 0;
+        RedisModule_EventLoopDel(e->fd, REDISMODULE_EVENTLOOP_READABLE);
+    }
+}
+
+static inline void redisModuleAddWrite(void *privdata) {
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    if (!e->writing) {
+        e->writing = 1;
+        RedisModule_EventLoopAdd(e->fd, REDISMODULE_EVENTLOOP_WRITABLE, redisModuleWriteEvent, e);
+    }
+}
+
+static inline void redisModuleDelWrite(void *privdata) {
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    if (e->writing) {
+        e->writing = 0;
+        RedisModule_EventLoopDel(e->fd, REDISMODULE_EVENTLOOP_WRITABLE);
+    }
+}
+
+static inline void redisModuleStopTimer(void *privdata) {
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    if (e->timer_active) {
+        RedisModule_StopTimer(e->module_ctx, e->timer_id, NULL);
+    }
+    e->timer_active = 0;
+}
+
+static inline void redisModuleCleanup(void *privdata) {
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    redisModuleDelRead(privdata);
+    redisModuleDelWrite(privdata);
+    redisModuleStopTimer(privdata);
+    hi_free(e);
+}
+
+static inline void redisModuleTimeout(RedisModuleCtx *ctx, void *privdata) {
+    (void) ctx;
+
+    redisModuleEvents *e = (redisModuleEvents*)privdata;
+    e->timer_active = 0;
+    redisAsyncHandleTimeout(e->context);
+}
+
+static inline void redisModuleSetTimeout(void *privdata, struct timeval tv) {
+    redisModuleEvents* e = (redisModuleEvents*)privdata;
+
+    redisModuleStopTimer(privdata);
+
+    mstime_t millis = tv.tv_sec * 1000 + tv.tv_usec / 1000.0;
+    e->timer_id = RedisModule_CreateTimer(e->module_ctx, millis, redisModuleTimeout, e);
+    e->timer_active = 1;
+}
+
+/* Check if Redis version is compatible with the adapter. */
+static inline int redisModuleCompatibilityCheck(void) {
+    if (!RedisModule_EventLoopAdd ||
+        !RedisModule_EventLoopDel ||
+        !RedisModule_CreateTimer ||
+        !RedisModule_StopTimer) {
+        return REDIS_ERR;
+    }
+    return REDIS_OK;
+}
+
+static inline int redisModuleAttach(redisAsyncContext *ac, RedisModuleCtx *module_ctx) {
+    redisContext *c = &(ac->c);
+    redisModuleEvents *e;
+
+    /* Nothing should be attached when something is already attached */
+    if (ac->ev.data != NULL)
+        return REDIS_ERR;
+
+    /* Create container for context and r/w events */
+    e = (redisModuleEvents*)hi_malloc(sizeof(*e));
+    if (e == NULL)
+        return REDIS_ERR;
+
+    e->context = ac;
+    e->module_ctx = module_ctx;
+    e->fd = c->fd;
+    e->reading = e->writing = 0;
+    e->timer_active = 0;
+
+    /* Register functions to start/stop listening for events */
+    ac->ev.addRead = redisModuleAddRead;
+    ac->ev.delRead = redisModuleDelRead;
+    ac->ev.addWrite = redisModuleAddWrite;
+    ac->ev.delWrite = redisModuleDelWrite;
+    ac->ev.cleanup = redisModuleCleanup;
+    ac->ev.scheduleTimer = redisModuleSetTimeout;
+    ac->ev.data = e;
+
+    return REDIS_OK;
+}
+
+#endif