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#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
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