frostfs-s3-gw/api/data/info.go

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package data
import (
"encoding/xml"
"strings"
"time"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
)
const (
bktSettingsObject = ".s3-settings"
bktCORSConfigurationObject = ".s3-cors"
bktNotificationConfigurationObject = ".s3-notifications"
VersioningUnversioned = "Unversioned"
VersioningEnabled = "Enabled"
VersioningSuspended = "Suspended"
)
type (
// BucketInfo stores basic bucket data.
BucketInfo struct {
Name string // container name from system attribute
Zone string // container zone from system attribute
CID cid.ID
Owner user.ID
Created time.Time
LocationConstraint string
ObjectLockEnabled bool
HomomorphicHashDisabled bool
APEEnabled bool
}
// ObjectInfo holds S3 object data.
ObjectInfo struct {
ID oid.ID
CID cid.ID
Bucket string
Name string
Size uint64
ContentType string
Created time.Time
CreationEpoch uint64
HashSum string
MD5Sum string
Owner user.ID
Headers map[string]string
}
// NotificationInfo store info to send s3 notification.
NotificationInfo struct {
Name string
Version string
Size uint64
HashSum string
}
// BucketSettings stores settings such as versioning.
BucketSettings struct {
Versioning string `json:"versioning"`
LockConfiguration *ObjectLockConfiguration `json:"lock_configuration"`
APE bool `json:"ape"`
}
// CORSConfiguration stores CORS configuration of a request.
CORSConfiguration struct {
XMLName xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ CORSConfiguration" json:"-"`
CORSRules []CORSRule `xml:"CORSRule" json:"CORSRules"`
}
// CORSRule stores rules for CORS in a bucket.
CORSRule struct {
ID string `xml:"ID,omitempty" json:"ID,omitempty"`
AllowedHeaders []string `xml:"AllowedHeader" json:"AllowedHeaders"`
AllowedMethods []string `xml:"AllowedMethod" json:"AllowedMethods"`
AllowedOrigins []string `xml:"AllowedOrigin" json:"AllowedOrigins"`
ExposeHeaders []string `xml:"ExposeHeader" json:"ExposeHeaders"`
MaxAgeSeconds int `xml:"MaxAgeSeconds,omitempty" json:"MaxAgeSeconds,omitempty"`
}
)
// NotificationInfoFromObject creates new NotificationInfo from ObjectInfo.
func NotificationInfoFromObject(objInfo *ObjectInfo, md5Enabled bool) *NotificationInfo {
return &NotificationInfo{
Name: objInfo.Name,
Version: objInfo.VersionID(),
Size: objInfo.Size,
HashSum: Quote(objInfo.ETag(md5Enabled)),
}
}
// SettingsObjectName is a system name for a bucket settings file.
func (b *BucketInfo) SettingsObjectName() string { return bktSettingsObject }
// CORSObjectName returns a system name for a bucket CORS configuration file.
func (b *BucketInfo) CORSObjectName() string { return bktCORSConfigurationObject }
func (b *BucketInfo) NotificationConfigurationObjectName() string {
return bktNotificationConfigurationObject
}
// VersionID returns object version from ObjectInfo.
func (o *ObjectInfo) VersionID() string { return o.ID.EncodeToString() }
// NiceName returns object name for cache.
func (o *ObjectInfo) NiceName() string { return o.Bucket + "/" + o.Name }
// Address returns object address.
func (o *ObjectInfo) Address() oid.Address {
var addr oid.Address
addr.SetContainer(o.CID)
addr.SetObject(o.ID)
return addr
}
func (o *ObjectInfo) ETag(md5Enabled bool) string {
if md5Enabled && len(o.MD5Sum) > 0 {
return o.MD5Sum
}
return o.HashSum
}
func (b BucketSettings) Unversioned() bool {
return b.Versioning == VersioningUnversioned
}
func (b BucketSettings) VersioningEnabled() bool {
return b.Versioning == VersioningEnabled
}
func (b BucketSettings) VersioningSuspended() bool {
return b.Versioning == VersioningSuspended
}
func Quote(val string) string {
return "\"" + val + "\""
}
func UnQuote(val string) string {
return strings.Trim(val, "\"")
}