#ifndef _SCALER_H_
#define _SCALER_H_

#include <pthread.h>
#include <stdlib.h>
#include <time.h>

#include "config.h"
#include "htab.h"
#include "mylock.h"
#include "scaler/types.h"
#include "xce/types.h"
#include "xlist.h"
#include "zarray.h"
#include <basiclib/list.h>

// in seconds
#define DEFAULT_CHECK_INTERVAL 30
typedef struct {
    char providers_file[XCE_MAXPATH_LEN];
    int  check_interval;
} scaler_conf_t;

typedef struct {
    zarray_t array;
    htab_t   tab;
    mylock_t lock;
} scaler_obj_mgr_t;

typedef struct demand_list {
    xcelist_t*     list;
    mylock_t       lock;
    pthread_cond_t cond;
} scaler_demand_queue_t;

typedef struct {
    scaler_conf_t         configs;
    scaler_obj_mgr_t      providers;
    scaler_obj_mgr_t      templates;
    scaler_obj_mgr_t      requests;
    scaler_obj_mgr_t      instances;
    scaler_demand_queue_t demands;
    mylock_t              lock;
    pthread_t             threads[2];
    int                   running;
#define SCALER_MENU_CHANGED 0x1
    int flag;
} autoscaler_context_t;

extern autoscaler_context_t g_scaler_ctx;

extern int   scaler_init(char* providers_file);
extern int   scaler_start();
extern void* scaler_monitor(void* arg);
extern void* scaler_demand_handler(void* arg);
extern int   publish_scaler_demand(scaler_demand_array_t* demands);

#endif