s3manager-web/errors.go

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package s3manager
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import (
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"encoding/json"
"io"
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"log"
"net/http"
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"github.com/pkg/errors"
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)
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// Error codes commonly used throughout the application
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const (
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errDecodingBody = "error decoding body JSON"
errEncodingJSON = "error encoding JSON"
errExecutingTemplate = "error executing template"
errParsingForm = "error parsing form"
errParsingTemplates = "error parsing template files"
)
// Errors that may be returned from an S3 client.
var (
ErrBucketDoesNotExist = errors.New("The specified bucket does not exist.")
ErrKeyDoesNotExist = errors.New("The specified key does not exist.")
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)
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// handleHTTPError handles HTTP errors.
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func handleHTTPError(w http.ResponseWriter, err error) {
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var code int
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switch err := errors.Cause(err).(type) {
case *json.SyntaxError:
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code = http.StatusUnprocessableEntity
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default:
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if err == io.EOF || err == io.ErrUnexpectedEOF {
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code = http.StatusUnprocessableEntity
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} else if err == ErrBucketDoesNotExist || err == ErrKeyDoesNotExist {
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code = http.StatusNotFound
} else {
code = http.StatusInternalServerError
}
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}
http.Error(w, http.StatusText(code), code)
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// Log if server error
if code >= 500 {
log.Println(err)
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}
}