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Persistence.go
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Persistence.go
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// Package Persistence to save and load progress or results
package Persistence
import (
"NeuroNet/Core/Brain/Connection"
"NeuroNet/Core/Logging"
"encoding/gob"
"os"
"strings"
)
// Struct for persistence handling
type Persistence struct {
filePath string
TimeElapsed float64
Connections []*Connection.Connection
LineNumber int
}
// Initialize persistence
func (persistence *Persistence) Initialize(filepath string) {
_, err := os.Stat(filepath)
if err != nil {
splitPath := strings.Split(filepath, "/")
rawPath := strings.Join(splitPath[:cap(splitPath)-1], "/")
if os.MkdirAll(rawPath, os.ModePerm) != nil {
Logging.Fatal("Could not create directories: " + err.Error())
}
}
persistence.filePath = filepath
_, err = os.Stat(persistence.filePath)
if err != nil {
os.Create(persistence.filePath)
}
}
// Get persistence data
func (persistence *Persistence) Read() (int, float64, []*Connection.Connection) {
file, err := os.OpenFile(persistence.filePath, os.O_RDONLY, 0666)
if err != nil {
Logging.Fatal("Persistence could not be loaded: " + err.Error())
}
fileStat, err := file.Stat()
if err != nil {
Logging.Fatal("Could not read file stats: " + err.Error())
}
if fileStat.Size() != 0 {
decoder := gob.NewDecoder(file)
err = decoder.Decode(persistence)
if err != nil {
Logging.Fatal("Persistence decoding error: " + err.Error())
}
} else {
persistence.LineNumber = 0
persistence.TimeElapsed = 0.0
persistence.Connections = nil
}
file.Close()
return persistence.LineNumber, persistence.TimeElapsed, persistence.Connections
}
// Set persistence data
func (persistence *Persistence) Write(lineNumber int, timeElapsed float64, connections []*Connection.Connection) {
persistence.LineNumber = lineNumber
persistence.TimeElapsed = timeElapsed
persistence.Connections = connections
file, err := os.OpenFile(persistence.filePath, os.O_WRONLY, 0666)
if err != nil {
Logging.Fatal("Persistence could not be loaded: " + err.Error())
}
encoder := gob.NewEncoder(file)
err = encoder.Encode(persistence)
if err != nil {
Logging.Fatal("Persistence encoding error: " + err.Error())
}
file.Close()
}