The S3 specification says that versions are ordered in the response of list object versions. mc snapshot needs this to know which version comes first especially when two versions have the same exact last-modified field.
464 lines
14 KiB
Go
464 lines
14 KiB
Go
/*
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* MinIO Cloud Storage, (C) 2016, 2017 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 cmd
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import (
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"io"
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"math"
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"time"
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humanize "github.com/dustin/go-humanize"
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"github.com/minio/minio/pkg/hash"
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"github.com/minio/minio/pkg/madmin"
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)
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// BackendType - represents different backend types.
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type BackendType int
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// Enum for different backend types.
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const (
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Unknown BackendType = iota
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// Filesystem backend.
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BackendFS
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// Multi disk BackendErasure (single, distributed) backend.
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BackendErasure
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// Gateway backend.
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BackendGateway
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// Add your own backend.
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)
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// StorageInfo - represents total capacity of underlying storage.
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type StorageInfo struct {
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Used []uint64 // Used total used per disk.
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Total []uint64 // Total disk space per disk.
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Available []uint64 // Total disk space available per disk.
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MountPaths []string // Disk mountpoints
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// Backend type.
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Backend struct {
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// Represents various backend types, currently on FS, Erasure and Gateway
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Type BackendType
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// Following fields are only meaningful if BackendType is Gateway.
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GatewayOnline bool
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// Following fields are only meaningful if BackendType is Erasure.
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OnlineDisks madmin.BackendDisks // Online disks during server startup.
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OfflineDisks madmin.BackendDisks // Offline disks during server startup.
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StandardSCData int // Data disks for currently configured Standard storage class.
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StandardSCParity int // Parity disks for currently configured Standard storage class.
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RRSCData int // Data disks for currently configured Reduced Redundancy storage class.
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RRSCParity int // Parity disks for currently configured Reduced Redundancy storage class.
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// List of all disk status, this is only meaningful if BackendType is Erasure.
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Sets [][]madmin.DriveInfo
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}
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}
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// objectHistogramInterval is an interval that will be
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// used to report the histogram of objects data sizes
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type objectHistogramInterval struct {
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name string
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start, end int64
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}
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const (
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// dataUsageBucketLen must be length of ObjectsHistogramIntervals
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dataUsageBucketLen = 7
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)
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// ObjectsHistogramIntervals is the list of all intervals
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// of object sizes to be included in objects histogram.
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var ObjectsHistogramIntervals = []objectHistogramInterval{
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{"LESS_THAN_1024_B", 0, humanize.KiByte - 1},
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{"BETWEEN_1024_B_AND_1_MB", humanize.KiByte, humanize.MiByte - 1},
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{"BETWEEN_1_MB_AND_10_MB", humanize.MiByte, humanize.MiByte*10 - 1},
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{"BETWEEN_10_MB_AND_64_MB", humanize.MiByte * 10, humanize.MiByte*64 - 1},
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{"BETWEEN_64_MB_AND_128_MB", humanize.MiByte * 64, humanize.MiByte*128 - 1},
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{"BETWEEN_128_MB_AND_512_MB", humanize.MiByte * 128, humanize.MiByte*512 - 1},
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{"GREATER_THAN_512_MB", humanize.MiByte * 512, math.MaxInt64},
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}
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// BucketUsageInfo - bucket usage info provides
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// - total size of the bucket
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// - total objects in a bucket
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// - object size histogram per bucket
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type BucketUsageInfo struct {
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Size uint64 `json:"size"`
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ObjectsCount uint64 `json:"objectsCount"`
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ObjectSizesHistogram map[string]uint64 `json:"objectsSizesHistogram"`
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}
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// DataUsageInfo represents data usage stats of the underlying Object API
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type DataUsageInfo struct {
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// LastUpdate is the timestamp of when the data usage info was last updated.
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// This does not indicate a full scan.
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LastUpdate time.Time `json:"lastUpdate"`
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// Objects total count across all buckets
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ObjectsTotalCount uint64 `json:"objectsCount"`
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// Objects total size across all buckets
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ObjectsTotalSize uint64 `json:"objectsTotalSize"`
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// Total number of buckets in this cluster
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BucketsCount uint64 `json:"bucketsCount"`
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// Buckets usage info provides following information across all buckets
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// - total size of the bucket
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// - total objects in a bucket
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// - object size histogram per bucket
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BucketsUsage map[string]BucketUsageInfo `json:"bucketsUsageInfo"`
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// Deprecated kept here for backward compatibility reasons.
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BucketSizes map[string]uint64 `json:"bucketsSizes"`
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}
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// BucketInfo - represents bucket metadata.
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type BucketInfo struct {
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// Name of the bucket.
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Name string
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// Date and time when the bucket was created.
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Created time.Time
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}
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// ObjectInfo - represents object metadata.
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type ObjectInfo struct {
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// Name of the bucket.
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Bucket string
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// Name of the object.
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Name string
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// Date and time when the object was last modified.
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ModTime time.Time
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// Total object size.
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Size int64
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// IsDir indicates if the object is prefix.
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IsDir bool
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// Hex encoded unique entity tag of the object.
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ETag string
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// Version ID of this object.
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VersionID string
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// IsLatest indicates if this is the latest current version
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// latest can be true for delete marker or a version.
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IsLatest bool
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// DeleteMarker indicates if the versionId corresponds
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// to a delete marker on an object.
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DeleteMarker bool
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// A standard MIME type describing the format of the object.
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ContentType string
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// Specifies what content encodings have been applied to the object and thus
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// what decoding mechanisms must be applied to obtain the object referenced
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// by the Content-Type header field.
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ContentEncoding string
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// Date and time at which the object is no longer able to be cached
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Expires time.Time
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// CacheStatus sets status of whether this is a cache hit/miss
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CacheStatus CacheStatusType
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// CacheLookupStatus sets whether a cacheable response is present in the cache
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CacheLookupStatus CacheStatusType
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// Specify object storage class
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StorageClass string
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// User-Defined metadata
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UserDefined map[string]string
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// User-Defined object tags
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UserTags string
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// List of individual parts, maximum size of upto 10,000
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Parts []ObjectPartInfo `json:"-"`
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// Implements writer and reader used by CopyObject API
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Writer io.WriteCloser `json:"-"`
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Reader *hash.Reader `json:"-"`
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PutObjReader *PutObjReader `json:"-"`
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metadataOnly bool
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keyRotation bool
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// Date and time when the object was last accessed.
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AccTime time.Time
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// backendType indicates which backend filled this structure
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backendType BackendType
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}
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// MultipartInfo captures metadata information about the uploadId
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// this data structure is used primarily for some internal purposes
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// for verifying upload type such as was the upload
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// - encrypted
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// - compressed
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type MultipartInfo struct {
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// Name of the bucket.
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Bucket string
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// Name of the object.
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Object string
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// Upload ID identifying the multipart upload whose parts are being listed.
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UploadID string
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// Date and time at which the multipart upload was initiated.
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Initiated time.Time
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// Any metadata set during InitMultipartUpload, including encryption headers.
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UserDefined map[string]string
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}
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// ListPartsInfo - represents list of all parts.
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type ListPartsInfo struct {
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// Name of the bucket.
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Bucket string
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// Name of the object.
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Object string
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// Upload ID identifying the multipart upload whose parts are being listed.
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UploadID string
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// The class of storage used to store the object.
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StorageClass string
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// Part number after which listing begins.
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PartNumberMarker int
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// When a list is truncated, this element specifies the last part in the list,
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// as well as the value to use for the part-number-marker request parameter
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// in a subsequent request.
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NextPartNumberMarker int
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// Maximum number of parts that were allowed in the response.
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MaxParts int
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// Indicates whether the returned list of parts is truncated.
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IsTruncated bool
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// List of all parts.
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Parts []PartInfo
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// Any metadata set during InitMultipartUpload, including encryption headers.
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UserDefined map[string]string
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}
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// Lookup - returns if uploadID is valid
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func (lm ListMultipartsInfo) Lookup(uploadID string) bool {
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for _, upload := range lm.Uploads {
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if upload.UploadID == uploadID {
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return true
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}
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}
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return false
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}
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// ListMultipartsInfo - represnets bucket resources for incomplete multipart uploads.
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type ListMultipartsInfo struct {
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// Together with upload-id-marker, this parameter specifies the multipart upload
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// after which listing should begin.
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KeyMarker string
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// Together with key-marker, specifies the multipart upload after which listing
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// should begin. If key-marker is not specified, the upload-id-marker parameter
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// is ignored.
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UploadIDMarker string
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// When a list is truncated, this element specifies the value that should be
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// used for the key-marker request parameter in a subsequent request.
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NextKeyMarker string
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// When a list is truncated, this element specifies the value that should be
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// used for the upload-id-marker request parameter in a subsequent request.
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NextUploadIDMarker string
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// Maximum number of multipart uploads that could have been included in the
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// response.
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MaxUploads int
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// Indicates whether the returned list of multipart uploads is truncated. A
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// value of true indicates that the list was truncated. The list can be truncated
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// if the number of multipart uploads exceeds the limit allowed or specified
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// by max uploads.
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IsTruncated bool
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// List of all pending uploads.
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Uploads []MultipartInfo
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// When a prefix is provided in the request, The result contains only keys
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// starting with the specified prefix.
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Prefix string
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// A character used to truncate the object prefixes.
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// NOTE: only supported delimiter is '/'.
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Delimiter string
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// CommonPrefixes contains all (if there are any) keys between Prefix and the
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// next occurrence of the string specified by delimiter.
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CommonPrefixes []string
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EncodingType string // Not supported yet.
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}
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// DeletedObjectInfo - container for list objects versions deleted objects.
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type DeletedObjectInfo struct {
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// Name of the bucket.
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Bucket string
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// Name of the object.
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Name string
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// Date and time when the object was last modified.
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ModTime time.Time
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// Version ID of this object.
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VersionID string
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// Indicates the deleted marker is latest
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IsLatest bool
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}
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// ListObjectVersionsInfo - container for list objects versions.
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type ListObjectVersionsInfo struct {
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// Indicates whether the returned list objects response is truncated. A
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// value of true indicates that the list was truncated. The list can be truncated
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// if the number of objects exceeds the limit allowed or specified
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// by max keys.
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IsTruncated bool
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// When response is truncated (the IsTruncated element value in the response is true),
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// you can use the key name in this field as marker in the subsequent
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// request to get next set of objects.
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//
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// NOTE: AWS S3 returns NextMarker only if you have delimiter request parameter specified,
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// MinIO always returns NextMarker.
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NextMarker string
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// NextVersionIDMarker may be set of IsTruncated is true
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NextVersionIDMarker string
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// List of objects info for this request.
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Objects []ObjectInfo
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// List of prefixes for this request.
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Prefixes []string
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}
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// ListObjectsInfo - container for list objects.
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type ListObjectsInfo struct {
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// Indicates whether the returned list objects response is truncated. A
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// value of true indicates that the list was truncated. The list can be truncated
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// if the number of objects exceeds the limit allowed or specified
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// by max keys.
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IsTruncated bool
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// When response is truncated (the IsTruncated element value in the response is true),
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// you can use the key name in this field as marker in the subsequent
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// request to get next set of objects.
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//
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// NOTE: AWS S3 returns NextMarker only if you have delimiter request parameter specified,
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// MinIO always returns NextMarker.
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NextMarker string
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// List of objects info for this request.
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Objects []ObjectInfo
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// List of prefixes for this request.
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Prefixes []string
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}
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// ListObjectsV2Info - container for list objects version 2.
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type ListObjectsV2Info struct {
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// Indicates whether the returned list objects response is truncated. A
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// value of true indicates that the list was truncated. The list can be truncated
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// if the number of objects exceeds the limit allowed or specified
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// by max keys.
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IsTruncated bool
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// When response is truncated (the IsTruncated element value in the response
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// is true), you can use the key name in this field as marker in the subsequent
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// request to get next set of objects.
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//
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// NOTE: This element is returned only if you have delimiter request parameter
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// specified.
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ContinuationToken string
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NextContinuationToken string
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// List of objects info for this request.
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Objects []ObjectInfo
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// List of prefixes for this request.
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Prefixes []string
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}
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// PartInfo - represents individual part metadata.
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type PartInfo struct {
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// Part number that identifies the part. This is a positive integer between
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// 1 and 10,000.
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PartNumber int
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// Date and time at which the part was uploaded.
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LastModified time.Time
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// Entity tag returned when the part was initially uploaded.
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ETag string
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// Size in bytes of the part.
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Size int64
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// Decompressed Size.
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ActualSize int64
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}
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// CompletePart - represents the part that was completed, this is sent by the client
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// during CompleteMultipartUpload request.
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type CompletePart struct {
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// Part number identifying the part. This is a positive integer between 1 and
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// 10,000
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PartNumber int
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// Entity tag returned when the part was uploaded.
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ETag string
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}
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// CompletedParts - is a collection satisfying sort.Interface.
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type CompletedParts []CompletePart
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func (a CompletedParts) Len() int { return len(a) }
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func (a CompletedParts) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
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func (a CompletedParts) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
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// CompleteMultipartUpload - represents list of parts which are completed, this is sent by the
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// client during CompleteMultipartUpload request.
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type CompleteMultipartUpload struct {
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Parts []CompletePart `xml:"Part"`
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}
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