minio/cmd/object-api-datatypes.go

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/*
* MinIO Cloud Storage, (C) 2016, 2017 MinIO, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"io"
"time"
"github.com/minio/minio/pkg/hash"
"github.com/minio/minio/pkg/madmin"
)
// BackendType - represents different backend types.
type BackendType int
// Enum for different backend types.
const (
Unknown BackendType = iota
// Filesystem backend.
BackendFS
// Multi disk BackendErasure (single, distributed) backend.
BackendErasure
// Gateway backend.
BackendGateway
// Add your own backend.
)
// StorageInfo - represents total capacity of underlying storage.
type StorageInfo struct {
Used []uint64 // Used total used per disk.
Total []uint64 // Total disk space per disk.
Available []uint64 // Total disk space available per disk.
MountPaths []string // Disk mountpoints
// Backend type.
Backend struct {
// Represents various backend types, currently on FS, Erasure and Gateway
Type BackendType
// Following fields are only meaningful if BackendType is Gateway.
GatewayOnline bool
// Following fields are only meaningful if BackendType is Erasure.
OnlineDisks madmin.BackendDisks // Online disks during server startup.
OfflineDisks madmin.BackendDisks // Offline disks during server startup.
StandardSCData int // Data disks for currently configured Standard storage class.
StandardSCParity int // Parity disks for currently configured Standard storage class.
RRSCData int // Data disks for currently configured Reduced Redundancy storage class.
RRSCParity int // Parity disks for currently configured Reduced Redundancy storage class.
// List of all disk status, this is only meaningful if BackendType is Erasure.
Sets [][]madmin.DriveInfo
}
}
// BucketInfo - represents bucket metadata.
type BucketInfo struct {
// Name of the bucket.
Name string
// Date and time when the bucket was created.
Created time.Time
}
// ObjectInfo - represents object metadata.
type ObjectInfo struct {
// Name of the bucket.
Bucket string
// Name of the object.
Name string
// Date and time when the object was last modified.
ModTime time.Time
// Total object size.
Size int64
// IsDir indicates if the object is prefix.
IsDir bool
// Hex encoded unique entity tag of the object.
ETag string
// A standard MIME type describing the format of the object.
ContentType string
// Specifies what content encodings have been applied to the object and thus
// what decoding mechanisms must be applied to obtain the object referenced
// by the Content-Type header field.
ContentEncoding string
// Date and time at which the object is no longer able to be cached
Expires time.Time
// Specify object storage class
StorageClass string
// User-Defined metadata
Move admin APIs to new path and add redesigned heal APIs (#5351) - Changes related to moving admin APIs - admin APIs now have an endpoint under /minio/admin - admin APIs are now versioned - a new API to server the version is added at "GET /minio/admin/version" and all API operations have the path prefix /minio/admin/v1/<operation> - new service stop API added - credentials change API is moved to /minio/admin/v1/config/credential - credentials change API and configuration get/set API now require TLS so that credentials are protected - all API requests now receive JSON - heal APIs are disabled as they will be changed substantially - Heal API changes Heal API is now provided at a single endpoint with the ability for a client to start a heal sequence on all the data in the server, a single bucket, or under a prefix within a bucket. When a heal sequence is started, the server returns a unique token that needs to be used for subsequent 'status' requests to fetch heal results. On each status request from the client, the server returns heal result records that it has accumulated since the previous status request. The server accumulates upto 1000 records and pauses healing further objects until the client requests for status. If the client does not request any further records for a long time, the server aborts the heal sequence automatically. A heal result record is returned for each entity healed on the server, such as system metadata, object metadata, buckets and objects, and has information about the before and after states on each disk. A client may request to force restart a heal sequence - this causes the running heal sequence to be aborted at the next safe spot and starts a new heal sequence.
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UserDefined map[string]string
// List of individual parts, maximum size of upto 10,000
Parts []ObjectPartInfo `json:"-"`
// Implements writer and reader used by CopyObject API
Writer io.WriteCloser `json:"-"`
Reader *hash.Reader `json:"-"`
PutObjReader *PutObjReader `json:"-"`
metadataOnly bool
// Date and time when the object was last accessed.
AccTime time.Time
// backendType indicates which backend filled this structure
backendType BackendType
}
// ListPartsInfo - represents list of all parts.
type ListPartsInfo struct {
// Name of the bucket.
Bucket string
// Name of the object.
Object string
// Upload ID identifying the multipart upload whose parts are being listed.
UploadID string
// The class of storage used to store the object.
StorageClass string
// Part number after which listing begins.
PartNumberMarker int
// When a list is truncated, this element specifies the last part in the list,
// as well as the value to use for the part-number-marker request parameter
// in a subsequent request.
NextPartNumberMarker int
// Maximum number of parts that were allowed in the response.
MaxParts int
// Indicates whether the returned list of parts is truncated.
IsTruncated bool
// List of all parts.
Parts []PartInfo
// Any metadata set during InitMultipartUpload, including encryption headers.
UserDefined map[string]string
EncodingType string // Not supported yet.
}
// ListMultipartsInfo - represnets bucket resources for incomplete multipart uploads.
type ListMultipartsInfo struct {
// Together with upload-id-marker, this parameter specifies the multipart upload
// after which listing should begin.
KeyMarker string
// Together with key-marker, specifies the multipart upload after which listing
// should begin. If key-marker is not specified, the upload-id-marker parameter
// is ignored.
UploadIDMarker string
// When a list is truncated, this element specifies the value that should be
// used for the key-marker request parameter in a subsequent request.
NextKeyMarker string
// When a list is truncated, this element specifies the value that should be
// used for the upload-id-marker request parameter in a subsequent request.
NextUploadIDMarker string
// Maximum number of multipart uploads that could have been included in the
// response.
MaxUploads int
// Indicates whether the returned list of multipart uploads is truncated. A
// value of true indicates that the list was truncated. The list can be truncated
// if the number of multipart uploads exceeds the limit allowed or specified
// by max uploads.
IsTruncated bool
// List of all pending uploads.
Uploads []MultipartInfo
// When a prefix is provided in the request, The result contains only keys
// starting with the specified prefix.
Prefix string
// A character used to truncate the object prefixes.
// NOTE: only supported delimiter is '/'.
Delimiter string
// CommonPrefixes contains all (if there are any) keys between Prefix and the
// next occurrence of the string specified by delimiter.
CommonPrefixes []string
EncodingType string // Not supported yet.
}
// ListObjectsInfo - container for list objects.
type ListObjectsInfo struct {
// Indicates whether the returned list objects response is truncated. A
// value of true indicates that the list was truncated. The list can be truncated
// if the number of objects exceeds the limit allowed or specified
// by max keys.
IsTruncated bool
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// When response is truncated (the IsTruncated element value in the response is true),
// you can use the key name in this field as marker in the subsequent
// request to get next set of objects.
//
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// NOTE: AWS S3 returns NextMarker only if you have delimiter request parameter specified,
// MinIO always returns NextMarker.
NextMarker string
// List of objects info for this request.
Objects []ObjectInfo
// List of prefixes for this request.
Prefixes []string
}
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// ListObjectsV2Info - container for list objects version 2.
type ListObjectsV2Info struct {
// Indicates whether the returned list objects response is truncated. A
// value of true indicates that the list was truncated. The list can be truncated
// if the number of objects exceeds the limit allowed or specified
// by max keys.
IsTruncated bool
// When response is truncated (the IsTruncated element value in the response
// is true), you can use the key name in this field as marker in the subsequent
// request to get next set of objects.
//
// NOTE: This element is returned only if you have delimiter request parameter
// specified.
ContinuationToken string
NextContinuationToken string
// List of objects info for this request.
Objects []ObjectInfo
// List of prefixes for this request.
Prefixes []string
}
// PartInfo - represents individual part metadata.
type PartInfo struct {
// Part number that identifies the part. This is a positive integer between
// 1 and 10,000.
PartNumber int
// Date and time at which the part was uploaded.
LastModified time.Time
// Entity tag returned when the part was initially uploaded.
ETag string
// Size in bytes of the part.
Size int64
// Decompressed Size.
ActualSize int64
}
// MultipartInfo - represents metadata in progress multipart upload.
type MultipartInfo struct {
// Object name for which the multipart upload was initiated.
Object string
// Unique identifier for this multipart upload.
UploadID string
// Date and time at which the multipart upload was initiated.
Initiated time.Time
StorageClass string // Not supported yet.
}
// CompletePart - represents the part that was completed, this is sent by the client
// during CompleteMultipartUpload request.
type CompletePart struct {
// Part number identifying the part. This is a positive integer between 1 and
// 10,000
PartNumber int
// Entity tag returned when the part was uploaded.
ETag string
}
// CompletedParts - is a collection satisfying sort.Interface.
type CompletedParts []CompletePart
func (a CompletedParts) Len() int { return len(a) }
func (a CompletedParts) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a CompletedParts) Less(i, j int) bool { return a[i].PartNumber < a[j].PartNumber }
// CompleteMultipartUpload - represents list of parts which are completed, this is sent by the
// client during CompleteMultipartUpload request.
type CompleteMultipartUpload struct {
Parts []CompletePart `xml:"Part"`
}