// Copyright (c) 2015-2021 MinIO, Inc. // // This file is part of MinIO Object Storage stack // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU Affero General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Affero General Public License for more details. // // You should have received a copy of the GNU Affero General Public License // along with this program. If not, see . package cmd import ( "context" "io" "net/http" "time" "github.com/minio/minio-go/v7/pkg/encrypt" "github.com/minio/minio-go/v7/pkg/tags" "github.com/minio/minio/pkg/bucket/policy" "github.com/minio/minio/pkg/madmin" ) // CheckPreconditionFn returns true if precondition check failed. type CheckPreconditionFn func(o ObjectInfo) bool // GetObjectInfoFn is the signature of GetObjectInfo function. type GetObjectInfoFn func(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error) // ObjectOptions represents object options for ObjectLayer object operations type ObjectOptions struct { ServerSideEncryption encrypt.ServerSide VersionSuspended bool // indicates if the bucket was previously versioned but is currently suspended. Versioned bool // indicates if the bucket is versioned WalkVersions bool // indicates if the we are interested in walking versions VersionID string // Specifies the versionID which needs to be overwritten or read MTime time.Time // Is only set in POST/PUT operations Expires time.Time // Is only used in POST/PUT operations DeleteMarker bool // Is only set in DELETE operations for delete marker replication UserDefined map[string]string // only set in case of POST/PUT operations PartNumber int // only useful in case of GetObject/HeadObject CheckPrecondFn CheckPreconditionFn // only set during GetObject/HeadObject/CopyObjectPart preconditional valuation DeleteMarkerReplicationStatus string // Is only set in DELETE operations VersionPurgeStatus VersionPurgeStatusType // Is only set in DELETE operations for delete marker version to be permanently deleted. Transition TransitionOptions NoLock bool // indicates to lower layers if the caller is expecting to hold locks. ProxyRequest bool // only set for GET/HEAD in active-active replication scenario ProxyHeaderSet bool // only set for GET/HEAD in active-active replication scenario ParentIsObject func(ctx context.Context, bucket, parent string) bool // Used to verify if parent is an object. // Use the maximum parity (N/2), used when // saving server configuration files MaxParity bool } // TransitionOptions represents object options for transition ObjectLayer operation type TransitionOptions struct { Status string Tier string ETag string RestoreRequest *RestoreObjectRequest RestoreExpiry time.Time ExpireRestored bool } // BucketOptions represents bucket options for ObjectLayer bucket operations type BucketOptions struct { Location string LockEnabled bool VersioningEnabled bool } // LockType represents required locking for ObjectLayer operations type LockType int const ( noLock LockType = iota readLock writeLock ) // BackendMetrics - represents bytes served from backend type BackendMetrics struct { bytesReceived uint64 bytesSent uint64 requestStats RequestStats } // ObjectLayer implements primitives for object API layer. type ObjectLayer interface { // Locking operations on object. NewNSLock(bucket string, objects ...string) RWLocker // Storage operations. Shutdown(context.Context) error NSScanner(ctx context.Context, bf *bloomFilter, updates chan<- madmin.DataUsageInfo) error BackendInfo() madmin.BackendInfo StorageInfo(ctx context.Context) (StorageInfo, []error) LocalStorageInfo(ctx context.Context) (StorageInfo, []error) // Bucket operations. MakeBucketWithLocation(ctx context.Context, bucket string, opts BucketOptions) error GetBucketInfo(ctx context.Context, bucket string) (bucketInfo BucketInfo, err error) ListBuckets(ctx context.Context) (buckets []BucketInfo, err error) DeleteBucket(ctx context.Context, bucket string, forceDelete bool) error ListObjects(ctx context.Context, bucket, prefix, marker, delimiter string, maxKeys int) (result ListObjectsInfo, err error) ListObjectsV2(ctx context.Context, bucket, prefix, continuationToken, delimiter string, maxKeys int, fetchOwner bool, startAfter string) (result ListObjectsV2Info, err error) ListObjectVersions(ctx context.Context, bucket, prefix, marker, versionMarker, delimiter string, maxKeys int) (result ListObjectVersionsInfo, err error) // Walk lists all objects including versions, delete markers. Walk(ctx context.Context, bucket, prefix string, results chan<- ObjectInfo, opts ObjectOptions) error // Object operations. // GetObjectNInfo returns a GetObjectReader that satisfies the // ReadCloser interface. The Close method unlocks the object // after reading, so it must always be called after usage. // // IMPORTANTLY, when implementations return err != nil, this // function MUST NOT return a non-nil ReadCloser. GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (reader *GetObjectReader, err error) GetObjectInfo(ctx context.Context, bucket, object string, opts ObjectOptions) (objInfo ObjectInfo, err error) PutObject(ctx context.Context, bucket, object string, data *PutObjReader, opts ObjectOptions) (objInfo ObjectInfo, err error) CopyObject(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (objInfo ObjectInfo, err error) DeleteObject(ctx context.Context, bucket, object string, opts ObjectOptions) (ObjectInfo, error) DeleteObjects(ctx context.Context, bucket string, objects []ObjectToDelete, opts ObjectOptions) ([]DeletedObject, []error) TransitionObject(ctx context.Context, bucket, object string, opts ObjectOptions) error RestoreTransitionedObject(ctx context.Context, bucket, object string, opts ObjectOptions) error // Multipart operations. ListMultipartUploads(ctx context.Context, bucket, prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int) (result ListMultipartsInfo, err error) NewMultipartUpload(ctx context.Context, bucket, object string, opts ObjectOptions) (uploadID string, err error) CopyObjectPart(ctx context.Context, srcBucket, srcObject, destBucket, destObject string, uploadID string, partID int, startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (info PartInfo, err error) PutObjectPart(ctx context.Context, bucket, object, uploadID string, partID int, data *PutObjReader, opts ObjectOptions) (info PartInfo, err error) GetMultipartInfo(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) (info MultipartInfo, err error) ListObjectParts(ctx context.Context, bucket, object, uploadID string, partNumberMarker int, maxParts int, opts ObjectOptions) (result ListPartsInfo, err error) AbortMultipartUpload(ctx context.Context, bucket, object, uploadID string, opts ObjectOptions) error CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []CompletePart, opts ObjectOptions) (objInfo ObjectInfo, err error) // Policy operations SetBucketPolicy(context.Context, string, *policy.Policy) error GetBucketPolicy(context.Context, string) (*policy.Policy, error) DeleteBucketPolicy(context.Context, string) error // Supported operations check IsNotificationSupported() bool IsListenSupported() bool IsEncryptionSupported() bool IsTaggingSupported() bool IsCompressionSupported() bool SetDriveCounts() []int // list of erasure stripe size for each pool in order. // Healing operations. HealFormat(ctx context.Context, dryRun bool) (madmin.HealResultItem, error) HealBucket(ctx context.Context, bucket string, opts madmin.HealOpts) (madmin.HealResultItem, error) HealObject(ctx context.Context, bucket, object, versionID string, opts madmin.HealOpts) (madmin.HealResultItem, error) HealObjects(ctx context.Context, bucket, prefix string, opts madmin.HealOpts, fn HealObjectFn) error // Backend related metrics GetMetrics(ctx context.Context) (*BackendMetrics, error) // Returns health of the backend Health(ctx context.Context, opts HealthOptions) HealthResult ReadHealth(ctx context.Context) bool // Metadata operations PutObjectMetadata(context.Context, string, string, ObjectOptions) (ObjectInfo, error) // ObjectTagging operations PutObjectTags(context.Context, string, string, string, ObjectOptions) (ObjectInfo, error) GetObjectTags(context.Context, string, string, ObjectOptions) (*tags.Tags, error) DeleteObjectTags(context.Context, string, string, ObjectOptions) (ObjectInfo, error) } // GetObject - TODO(aead): This function just acts as an adapter for GetObject tests and benchmarks // since the GetObject method of the ObjectLayer interface has been removed. Once, the // tests are adjusted to use GetObjectNInfo this function can be removed. func GetObject(ctx context.Context, api ObjectLayer, bucket, object string, startOffset int64, length int64, writer io.Writer, etag string, opts ObjectOptions) (err error) { var header http.Header if etag != "" { header.Set("ETag", etag) } Range := &HTTPRangeSpec{Start: startOffset, End: startOffset + length} reader, err := api.GetObjectNInfo(ctx, bucket, object, Range, header, readLock, opts) if err != nil { return err } defer reader.Close() _, err = io.Copy(writer, reader) return err }