TagV2.h

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#ifndef _MXIDAF_TAG_NEW_H_
#define _MXIDAF_TAG_NEW_H_

#include <stdint.h>

#ifdef __cplusplus
extern "C"
{
#endif

typedef struct tag_ tag;

tag *
    tag_new();

void
    tag_delete(
        tag *self   
    );

typedef union
{
    int64_t     i;  
    uint64_t    u;  
    double      d;  
    char *      s;  
    struct {
        char *  b;  
        int     l;  
    };
} value_t;

typedef enum
{
    TAG_VALUE_TYPE_INT,     
    TAG_VALUE_TYPE_UINT,    
    TAG_VALUE_TYPE_DOUBLE,  
    TAG_VALUE_TYPE_STRING,  
    TAG_VALUE_TYPE_BYTEARRAY 
} value_type_t;

int
    tag_publish(
        tag *self,                  
        const char *equipment_name, 
        const char *tag_name,       
        value_t *value,             
        value_type_t value_type,    
        const char *unit,           
        const char *time            
    );

int
    tag_subscribe(
        tag *self,                  
        const char *equipment_name, 
        const char *tag_name        
    );

int
    tag_unsubscribe(
        tag *self,                  
        const char *equipment_name, 
        const char *tag_name        
    );

typedef
    void (*on_tag)(
        tag *self,                  
        const char *equipment_name, 
        const char *tag_name,       
        value_t *value,             
        value_type_t value_type,    
        const char *unit,           
        const char *time            
    );

int
    tag_subscribe_callback(
        tag *self,                      
        on_tag                          
    );

#ifdef __cplusplus
}
#endif

#endif