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131 lines
3.3 KiB
131 lines
3.3 KiB
/*
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* Minio Cloud Storage, (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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"os"
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"path/filepath"
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"sync"
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"time"
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"github.com/minio/minio-xl/pkg/probe"
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)
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// Filesystem - local variables
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type Filesystem struct {
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path string
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minFreeDisk int64
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maxBuckets int
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lock *sync.Mutex
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multiparts *Multiparts
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buckets *Buckets
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listServiceReqCh chan<- listServiceReq
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timeoutReqCh chan<- uint32
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}
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// Buckets holds acl information
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type Buckets struct {
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Version string `json:"version"`
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Metadata map[string]*BucketMetadata
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}
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// MultipartSession holds active session information
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type MultipartSession struct {
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TotalParts int
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UploadID string
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Initiated time.Time
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Parts []*PartMetadata
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}
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// Multiparts collection of many parts
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type Multiparts struct {
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Version string `json:"version"`
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ActiveSession map[string]*MultipartSession `json:"activeSessions"`
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}
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// New instantiate a new donut
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func New(rootPath string) (Filesystem, *probe.Error) {
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setFSBucketsConfigPath(filepath.Join(rootPath, "$buckets.json"))
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setFSMultipartsConfigPath(filepath.Join(rootPath, "$multiparts-session.json"))
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var err *probe.Error
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// load multiparts session from disk
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var multiparts *Multiparts
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multiparts, err = loadMultipartsSession()
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if err != nil {
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if os.IsNotExist(err.ToGoError()) {
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multiparts = &Multiparts{
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Version: "1",
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ActiveSession: make(map[string]*MultipartSession),
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}
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if err := saveMultipartsSession(multiparts); err != nil {
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return Filesystem{}, err.Trace()
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}
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} else {
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return Filesystem{}, err.Trace()
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}
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}
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var buckets *Buckets
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buckets, err = loadBucketsMetadata()
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if err != nil {
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if os.IsNotExist(err.ToGoError()) {
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buckets = &Buckets{
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Version: "1",
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Metadata: make(map[string]*BucketMetadata),
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}
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if err := saveBucketsMetadata(buckets); err != nil {
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return Filesystem{}, err.Trace()
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}
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} else {
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return Filesystem{}, err.Trace()
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}
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}
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fs := Filesystem{lock: new(sync.Mutex)}
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fs.path = rootPath
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fs.multiparts = multiparts
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fs.buckets = buckets
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/// Defaults
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// maximum buckets to be listed from list buckets.
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fs.maxBuckets = 1000
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// minium free disk required for i/o operations to succeed.
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fs.minFreeDisk = 10
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// Start list goroutine.
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if err = fs.listObjectsService(); err != nil {
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return Filesystem{}, err.Trace(rootPath)
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}
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// Return here.
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return fs, nil
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}
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// SetMinFreeDisk - set min free disk
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func (fs *Filesystem) SetMinFreeDisk(minFreeDisk int64) {
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fs.lock.Lock()
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defer fs.lock.Unlock()
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fs.minFreeDisk = minFreeDisk
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}
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// SetMaxBuckets - set total number of buckets supported, default is 100.
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func (fs *Filesystem) SetMaxBuckets(maxBuckets int) {
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fs.lock.Lock()
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defer fs.lock.Unlock()
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if maxBuckets == 0 {
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maxBuckets = 100
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}
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fs.maxBuckets = maxBuckets
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}
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