package logfile import ( "encoding/json" "fmt" "os" "path/filepath" "github.com/go-flucky/flucky/pkg/types" ) type jsonLogfile struct { logfile string } func (jl *jsonLogfile) Read() ([]*types.MeasuredValue, error) { if _, err := os.Stat(jl.logfile); os.IsNotExist(err) { return nil, fmt.Errorf("%v: %v", errorLogfileNotFound, jl.logfile) } f, err := os.Open(jl.logfile) if err != nil { return nil, fmt.Errorf("%v %v: %v", errorLogfileOpen, jl.logfile, err) } measuredValues := make([]*types.MeasuredValue, 0) if err := json.NewDecoder(f).Decode(measuredValues); err != nil { return nil, fmt.Errorf("%v %v: %v", errorLogfileDecode, jl.logfile, err) } return measuredValues, nil } func (jl *jsonLogfile) Write(measuredValues []*types.MeasuredValue) error { if _, err := os.Stat(filepath.Dir(jl.logfile)); os.IsNotExist(err) { if err := os.MkdirAll(filepath.Dir(jl.logfile), 755); err != nil { return fmt.Errorf("Directory for the logfile can not be created: %v", err) } } writeCreationDate(measuredValues) f, err := os.Create(jl.logfile) if err != nil { return fmt.Errorf("%v %v: %v", errorLogfileCreate, jl.logfile, err) } jsonEncoder := json.NewEncoder(f) jsonEncoder.SetIndent("", " ") err = jsonEncoder.Encode(measuredValues) if err != nil { return fmt.Errorf("%v %v: %v", errorLogfileEncode, jl.logfile, err) } return nil }