70 lines
1.2 KiB
C++
70 lines
1.2 KiB
C++
#ifndef _POS_LOG_H_
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#define _POS_LOG_H_
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#include "common.h"
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#include "sha1.h"
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#include <list>
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#include <string>
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#include <vector>
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enum E_OBJ_TYPE { ET_TRANS, ET_HASH, ET_SALE, ET_PRICE, ET_ADDUPC, ET_REVERT };
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struct __attribute__ ((aligned (64), packed)) LogEntry
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{
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uint64_t ts;
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uint64_t serial;
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E_OBJ_TYPE type;
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union {
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struct __attribute__ ((packed)) {
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uint32_t uid;
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int32_t delta;
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} Transaction;
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struct __attribute__ ((packed)) {
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char hash[20];
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uint32_t uid;
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bool add;
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} HashChange;
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struct __attribute__ ((packed)) {
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uint64_t upc;
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int32_t delta;
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} StockChange;
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struct __attribute__ ((packed)) {
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uint64_t upc;
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int32_t price;
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} PriceChange;
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struct __attribute__ ((packed)) {
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uint64_t upc;
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char name[33];
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} AddUPC;
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struct __attribute__ ((packed)) {
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uint64_t revert_serial;
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} Revert;
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};
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};
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class Log {
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public:
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Log(const char * fn);
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uint64_t writeEntry(LogEntry ent);
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uint64_t nextSerial();
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LogEntry newLogEntry(E_OBJ_TYPE type);
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std::vector<std::string> toString();
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std::list<LogEntry>::const_iterator begin();
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std::list<LogEntry>::const_iterator end();
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private:
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std::list<LogEntry> entries;
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std::string log_name;
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uint64_t serial;
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};
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#endif
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