d2b09d854f
Implement a new error handling library based on pkg/errors. It provides stack saving on wrapping and exports some function to add stack saving also to external errors. It also implements custom zerolog error formatting without adding too much verbosity by just printing the chain error file:line without a full stack trace of every error. * Add a --detailed-errors options to print error with they full chain * Wrap all error returns. Use errors.WithStack to wrap without adding a new messsage and error.Wrap[f] to add a message. * Add golangci-lint wrapcheck to check that external packages errors are wrapped. This won't check that internal packages error are wrapped. But we want also to ensure this case so we'll have to find something else to check also these.
96 lines
2.3 KiB
Go
96 lines
2.3 KiB
Go
// Copyright 2019 Sorint.lab
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package objectstorage
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import (
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"io"
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"time"
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"agola.io/agola/internal/errors"
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)
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type Storage interface {
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Stat(filepath string) (*ObjectInfo, error)
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ReadObject(filepath string) (ReadSeekCloser, error)
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// WriteObject atomically writes an object. If size is greater or equal to
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// zero then only size bytes will be read from data and wrote. If size is
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// less than zero data will be wrote until EOF. When persist is true the
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// implementation must ensure that data is persisted to the underlying
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// storage.
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WriteObject(filepath string, data io.Reader, size int64, persist bool) error
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DeleteObject(filepath string) error
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List(prefix, startWith, delimiter string, doneCh <-chan struct{}) <-chan ObjectInfo
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}
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type ErrNotExist struct {
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err error
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*errors.Stack
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}
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func NewErrNotExist(err error) error {
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return &ErrNotExist{err: err, Stack: errors.Callers(0)}
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}
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func (e *ErrNotExist) Error() string {
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return e.err.Error()
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}
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func (e *ErrNotExist) Unwrap() error {
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return e.err
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}
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func IsNotExist(err error) bool {
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var e *ErrNotExist
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return errors.As(err, &e)
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}
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type ReadSeekCloser interface {
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io.Reader
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io.Seeker
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io.Closer
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}
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type ObjectInfo struct {
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Path string
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LastModified time.Time
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Size int64
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Err error
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}
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// ObjStorage wraps a Storage providing additional helper functions
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type ObjStorage struct {
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Storage
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delimiter string
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}
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func NewObjStorage(s Storage, delimiter string) *ObjStorage {
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return &ObjStorage{Storage: s, delimiter: delimiter}
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}
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func (s *ObjStorage) Delimiter() string {
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return s.delimiter
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}
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func (s *ObjStorage) List(prefix, startWith string, recursive bool, doneCh <-chan struct{}) <-chan ObjectInfo {
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delimiter := s.delimiter
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if recursive {
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delimiter = ""
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}
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return s.Storage.List(prefix, startWith, delimiter, doneCh)
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}
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