71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
package simulation
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import (
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"fmt"
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"os"
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"path"
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"time"
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)
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// log writter
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type LogWriter interface {
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AddEntry(OperationEntry)
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PrintLogs()
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}
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// LogWriter - return a dummy or standard log writer given the testingmode
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func NewLogWriter(testingmode bool) LogWriter {
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if !testingmode {
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return &DummyLogWriter{}
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}
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return &StandardLogWriter{}
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}
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// log writter
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type StandardLogWriter struct {
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OpEntries []OperationEntry `json:"op_entries" yaml:"op_entries"`
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}
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// add an entry to the log writter
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func (lw *StandardLogWriter) AddEntry(opEntry OperationEntry) {
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lw.OpEntries = append(lw.OpEntries, opEntry)
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}
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// PrintLogs - print the logs to a simulation file
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func (lw *StandardLogWriter) PrintLogs() {
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f := createLogFile()
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for i := 0; i < len(lw.OpEntries); i++ {
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writeEntry := fmt.Sprintf("%s\n", (lw.OpEntries[i]).MustMarshal())
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_, err := f.WriteString(writeEntry)
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if err != nil {
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panic("Failed to write logs to file")
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}
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}
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}
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func createLogFile() *os.File {
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var f *os.File
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fileName := fmt.Sprintf("%s.log", time.Now().Format("2006-01-02_15:04:05"))
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folderPath := os.ExpandEnv("$HOME/.simapp/simulations")
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filePath := path.Join(folderPath, fileName)
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err := os.MkdirAll(folderPath, os.ModePerm)
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if err != nil {
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panic(err)
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}
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f, _ = os.Create(filePath)
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fmt.Printf("Logs to writing to %s\n", filePath)
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return f
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}
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//_____________________
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// dummy log writter
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type DummyLogWriter struct{}
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// do nothing
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func (lw *DummyLogWriter) AddEntry(_ OperationEntry) {}
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// do nothing
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func (lw *DummyLogWriter) PrintLogs() {}
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