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72 lines
2.1 KiB
Go
72 lines
2.1 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"sync"
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"github.com/dustin/go-humanize"
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)
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const (
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// Block size used for all internal operations version 1.
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// TLDR..
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// Not used anymore xl.meta captures the right blockSize
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// so blockSizeV2 should be used for all future purposes.
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// this value is kept here to calculate the max API
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// requests based on RAM size for existing content.
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blockSizeV1 = 10 * humanize.MiByte
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// Block size used in erasure coding version 2.
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blockSizeV2 = 1 * humanize.MiByte
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// Buckets meta prefix.
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bucketMetaPrefix = "buckets"
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// Deleted Buckets prefix.
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deletedBucketsPrefix = ".deleted"
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// ETag (hex encoded md5sum) of empty string.
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emptyETag = "d41d8cd98f00b204e9800998ecf8427e"
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)
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// Global object layer mutex, used for safely updating object layer.
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var globalObjLayerMutex sync.RWMutex
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// Global object layer, only accessed by globalObjectAPI.
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var globalObjectAPI ObjectLayer
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type storageOpts struct {
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cleanUp bool
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healthCheck bool
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}
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// Depending on the disk type network or local, initialize storage API.
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func newStorageAPI(endpoint Endpoint, opts storageOpts) (storage StorageAPI, err error) {
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if endpoint.IsLocal {
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storage, err := newXLStorage(endpoint, opts.cleanUp)
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if err != nil {
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return nil, err
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}
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return newXLStorageDiskIDCheck(storage, opts.healthCheck), nil
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}
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return newStorageRESTClient(endpoint, opts.healthCheck), nil
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}
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