use struct2json and import autoscaler

src/autoscaler/scaler/include/scaler.h

@@ -0,0 +1,58 @@
+#ifndef _SCALER_H_
+#define _SCALER_H_
+
+#include <pthread.h>
+#include <stdlib.h>
+#include <time.h>
+
+#include <basiclib/list.h>
+#include "config.h"
+#include "htab.h"
+#include "mylock.h"
+#include "scaler/types.h"
+#include "xce/types.h"
+#include "xlist.h"
+#include "zarray.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