mirror of
https://github.com/minio/mc.git
synced 2025-11-14 23:42:27 +03:00
111 lines
2.8 KiB
Go
111 lines
2.8 KiB
Go
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
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/*
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* Mini Copy, (C) 2015 Minio, Inc.
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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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*/
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package fs
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import (
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"errors"
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"io"
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"os"
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"path/filepath"
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"sync"
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"github.com/minio-io/mc/pkg/client"
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"github.com/minio-io/minio/pkg/iodine"
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)
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// Put - upload new object to bucket
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func (f *fsClient) Put(md5HexString string, size int64) (io.WriteCloser, error) {
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r, w := io.Pipe()
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blockingWriter := NewBlockingWriteCloser(w)
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go func() {
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// handle md5HexString match internally
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if size < 0 {
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err := iodine.New(client.InvalidArgument{Err: errors.New("invalid argument")}, nil)
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r.CloseWithError(err)
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blockingWriter.Release(err)
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return
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}
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objectDir, _ := filepath.Split(f.Path)
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objectPath := f.Path
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if err := os.MkdirAll(objectDir, 0700); err != nil {
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err := iodine.New(err, nil)
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r.CloseWithError(err)
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blockingWriter.Release(err)
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return
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}
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fs, err := os.Create(objectPath)
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if err != nil {
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err := iodine.New(err, nil)
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r.CloseWithError(err)
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blockingWriter.Release(err)
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return
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}
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_, err = io.CopyN(fs, r, size)
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if err != nil {
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err := iodine.New(err, nil)
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r.CloseWithError(err)
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blockingWriter.Release(err)
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return
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}
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blockingWriter.Release(nil)
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r.Close()
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}()
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return blockingWriter, nil
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}
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// BlockingWriteCloser is a WriteCloser that blocks until released
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type BlockingWriteCloser struct {
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w io.WriteCloser
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release *sync.WaitGroup
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err error
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}
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// Write to the underlying writer
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func (b *BlockingWriteCloser) Write(p []byte) (int, error) {
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n, err := b.w.Write(p)
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err = iodine.New(err, nil)
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return n, err
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}
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// Close blocks until another goroutine calls Release(error). Returns error code if either
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// writer fails or Release is called with an error.
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func (b *BlockingWriteCloser) Close() error {
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err := b.w.Close()
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if err != nil {
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b.err = err
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}
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b.release.Wait()
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return b.err
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}
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// Release the Close, causing it to unblock. Only call this once. Calling it multiple times results in a panic.
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func (b *BlockingWriteCloser) Release(err error) {
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b.release.Done()
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if err != nil {
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b.err = err
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}
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}
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// NewBlockingWriteCloser Creates a new write closer that must be released by the read consumer.
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func NewBlockingWriteCloser(w io.WriteCloser) *BlockingWriteCloser {
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wg := &sync.WaitGroup{}
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wg.Add(1)
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return &BlockingWriteCloser{w: w, release: wg}
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}
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