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155 lines
8.6 KiB
155 lines
8.6 KiB
/*
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* MinIO Cloud Storage, (C) 2016-2020 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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"context"
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"io"
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"net/http"
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"time"
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"github.com/minio/minio-go/v7/pkg/encrypt"
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"github.com/minio/minio-go/v7/pkg/tags"
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"github.com/minio/minio/pkg/bucket/policy"
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"github.com/minio/minio/pkg/madmin"
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)
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// CheckPreconditionFn returns true if precondition check failed.
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type CheckPreconditionFn func(o ObjectInfo) bool
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// GetObjectInfoFn is the signature of GetObjectInfo function.
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type GetObjectInfoFn func(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error)
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// ObjectOptions represents object options for ObjectLayer object operations
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type ObjectOptions struct {
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ServerSideEncryption encrypt.ServerSide
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VersionSuspended bool // indicates if the bucket was previously versioned but is currently suspended.
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Versioned bool // indicates if the bucket is versioned
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WalkVersions bool // indicates if the we are interested in walking versions
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VersionID string // Specifies the versionID which needs to be overwritten or read
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MTime time.Time // Is only set in POST/PUT operations
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Expires time.Time // Is only used in POST/PUT operations
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DeleteMarker bool // Is only set in DELETE operations for delete marker replication
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UserDefined map[string]string // only set in case of POST/PUT operations
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PartNumber int // only useful in case of GetObject/HeadObject
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CheckPrecondFn CheckPreconditionFn // only set during GetObject/HeadObject/CopyObjectPart preconditional valuation
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DeleteMarkerReplicationStatus string // Is only set in DELETE operations
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VersionPurgeStatus VersionPurgeStatusType // Is only set in DELETE operations for delete marker version to be permanently deleted.
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TransitionStatus string // status of the transition
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NoLock bool // indicates to lower layers if the caller is expecting to hold locks.
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ProxyRequest bool // only set for GET/HEAD in active-active replication scenario
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ParentIsObject func(ctx context.Context, bucket, parent string) bool // Used to verify if parent is an object.
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}
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// BucketOptions represents bucket options for ObjectLayer bucket operations
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type BucketOptions struct {
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Location string
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LockEnabled bool
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VersioningEnabled bool
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}
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// LockType represents required locking for ObjectLayer operations
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type LockType int
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const (
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noLock LockType = iota
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readLock
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writeLock
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)
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// ObjectLayer implements primitives for object API layer.
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type ObjectLayer interface {
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SetDriveCount() int // Only implemented by erasure layer
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// Locking operations on object.
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NewNSLock(bucket string, objects ...string) RWLocker
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// Storage operations.
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Shutdown(context.Context) error
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CrawlAndGetDataUsage(ctx context.Context, bf *bloomFilter, updates chan<- DataUsageInfo) error
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BackendInfo() BackendInfo
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StorageInfo(ctx context.Context) (StorageInfo, []error) // local queries only local disks
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// Bucket operations.
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MakeBucketWithLocation(ctx context.Context, bucket string, opts BucketOptions) error
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GetBucketInfo(ctx context.Context, bucket string) (bucketInfo BucketInfo, err error)
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ListBuckets(ctx context.Context) (buckets []BucketInfo, err error)
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DeleteBucket(ctx context.Context, bucket string, forceDelete bool) error
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ListObjects(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (result ListObjectsInfo, err error)
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ListObjectsV2(ctx context.Context, bucket, prefix, continuationToken, delimiter string, maxKeys int, fetchOwner bool, startAfter string) (result ListObjectsV2Info, err error)
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ListObjectVersions(ctx context.Context, bucket, prefix, marker, versionMarker, delimiter string, maxKeys int) (result ListObjectVersionsInfo, err error)
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// Walk lists all objects including versions, delete markers.
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Walk(ctx context.Context, bucket, prefix string, results chan<- ObjectInfo, opts ObjectOptions) error
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// Object operations.
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// GetObjectNInfo returns a GetObjectReader that satisfies the
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// ReadCloser interface. The Close method unlocks the object
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// after reading, so it must always be called after usage.
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//
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// IMPORTANTLY, when implementations return err != nil, this
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// function MUST NOT return a non-nil ReadCloser.
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GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (reader *GetObjectReader, err error)
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GetObject(ctx context.Context, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) (err error)
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GetObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error)
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PutObject(ctx context.Context, bucket, object string, data *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, err error)
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CopyObject(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (objInfo ObjectInfo, err error)
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DeleteObject(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error)
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DeleteObjects(ctx context.Context, bucket string, objects []ObjectToDelete, opts ObjectOptions) ([]DeletedObject, []error)
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// Multipart operations.
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ListMultipartUploads(ctx context.Context, bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (result ListMultipartsInfo, err error)
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NewMultipartUpload(ctx context.Context, bucket, object string, opts ObjectOptions) (uploadID string, err error)
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CopyObjectPart(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, uploadID string, partID int,
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startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (info PartInfo, err error)
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PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error)
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GetMultipartInfo(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) (info MultipartInfo, err error)
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ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker int, maxParts int, opts ObjectOptions) (result ListPartsInfo, err error)
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AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) error
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CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error)
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// Healing operations.
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HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error)
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HealBucket(ctx context.Context, bucket string, opts madmin.HealOpts) (madmin.HealResultItem, error)
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HealObject(ctx context.Context, bucket, object, versionID string, opts madmin.HealOpts) (madmin.HealResultItem, error)
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HealObjects(ctx context.Context, bucket, prefix string, opts madmin.HealOpts, fn HealObjectFn) error
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// Policy operations
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SetBucketPolicy(context.Context, string, *policy.Policy) error
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GetBucketPolicy(context.Context, string) (*policy.Policy, error)
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DeleteBucketPolicy(context.Context, string) error
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// Supported operations check
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IsNotificationSupported() bool
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IsListenSupported() bool
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IsEncryptionSupported() bool
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IsTaggingSupported() bool
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IsCompressionSupported() bool
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// Backend related metrics
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GetMetrics(ctx context.Context) (*Metrics, error)
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// Returns health of the backend
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Health(ctx context.Context, opts HealthOptions) HealthResult
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// ObjectTagging operations
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PutObjectTags(context.Context, string, string, string, ObjectOptions) error
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GetObjectTags(context.Context, string, string, ObjectOptions) (*tags.Tags, error)
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DeleteObjectTags(context.Context, string, string, ObjectOptions) error
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}
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