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March 22, 2016 20:00
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| f, err := os.Open(path) | |
| defer f.Close() | |
| if err != nil { | |
| log.Error.Printf("Failed to open file %s", path) | |
| return "", err | |
| } | |
| byteData := make([]byte, 12) | |
| bytesRead, err := f.Read(byteData) | |
| if err != nil { | |
| log.Error.Printf("File read error occurred for %s - read %d bytes", path, bytesRead) | |
| fi, err := os.Stat(path) | |
| if err != nil { | |
| log.Error.Printf("Could not stat file %s : %v", path, err) | |
| } else { | |
| log.Error.Printf("File info for %s: Size: %d Mode: %v", path, fi.Size(), fi.Mode()) | |
| } | |
| // This fails | |
| bytesRead, err = f.Read(byteData) | |
| if err != nil { | |
| log.Error.Printf("Second read failed %s: %v", path, err) | |
| f.Close() | |
| f, err = os.Open(path) | |
| if err != nil { | |
| log.Error.Printf("Failed to open file %s", path) | |
| return "", err | |
| } | |
| // This succeeds | |
| bytesRead, err = f.Read(byteData) | |
| if err != nil { | |
| log.Error.Printf("Third read failed %s: %v", path, err) | |
| } else { | |
| // This succeeds | |
| log.Error.Printf("Third read succeeded for %s %d", path, bytesRead) | |
| } | |
| } else { | |
| log.Error.Printf("Second read succeeded for %s %d", path, bytesRead) | |
| } | |
| return "", err | |
| } | |
| // Output | |
| // ERROR: 2016/03/22 13:54:59 image_util.go:23: File read error occurred for c:\GoWork\src\github.com\cchamplin\goimage\test\catalog\product\1\0\1002458_4.jpg - read 0 bytes | |
| // ERROR: 2016/03/22 13:54:59 image_util.go:28: File info for c:\GoWork\src\github.com\cchamplin\goimage\test\catalog\product\1\0\1002458_4.jpg: Size: 53416 Mode: -rw-rw-rw- | |
| // ERROR: 2016/03/22 13:54:59 image_util.go:32: Second read failed c:\GoWork\src\github.com\cchamplin\goimage\test\catalog\product\1\0\1002458_4.jpg: EOF | |
| // ERROR: 2016/03/22 13:54:59 image_util.go:43: third read succeeded for c:\GoWork\src\github.com\cchamplin\goimage\test\catalog\product\1\0\1002458_4.jpg 12 | |
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