frostfs-sdk-go/client/object_delete.go
Evgenii Stratonikov 1bfa9ecdb0 [#48] client: Remove ctx == nil checks
Much less useful after we made context to be passed explicitly.

Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-13 09:04:09 +03:00

180 lines
5.2 KiB
Go

package client
import (
"context"
"crypto/ecdsa"
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/acl"
v2object "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
v2refs "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
rpcapi "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/rpc/client"
v2session "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/session"
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/signature"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
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/session"
)
// PrmObjectDelete groups parameters of ObjectDelete operation.
type PrmObjectDelete struct {
meta v2session.RequestMetaHeader
body v2object.DeleteRequestBody
addr v2refs.Address
keySet bool
key ecdsa.PrivateKey
}
// WithinSession specifies session within which object should be read.
//
// Creator of the session acquires the authorship of the request.
// This may affect the execution of an operation (e.g. access control).
//
// Must be signed.
func (x *PrmObjectDelete) WithinSession(t session.Object) {
var tv2 v2session.Token
t.WriteToV2(&tv2)
x.meta.SetSessionToken(&tv2)
}
// WithBearerToken attaches bearer token to be used for the operation.
//
// If set, underlying eACL rules will be used in access control.
//
// Must be signed.
func (x *PrmObjectDelete) WithBearerToken(t bearer.Token) {
var v2token acl.BearerToken
t.WriteToV2(&v2token)
x.meta.SetBearerToken(&v2token)
}
// FromContainer specifies FrostFS container of the object.
// Required parameter.
func (x *PrmObjectDelete) FromContainer(id cid.ID) {
var cidV2 v2refs.ContainerID
id.WriteToV2(&cidV2)
x.addr.SetContainerID(&cidV2)
}
// ByID specifies identifier of the requested object.
// Required parameter.
func (x *PrmObjectDelete) ByID(id oid.ID) {
var idV2 v2refs.ObjectID
id.WriteToV2(&idV2)
x.addr.SetObjectID(&idV2)
}
// UseKey specifies private key to sign the requests.
// If key is not provided, then Client default key is used.
func (x *PrmObjectDelete) UseKey(key ecdsa.PrivateKey) {
x.keySet = true
x.key = key
}
// WithXHeaders specifies list of extended headers (string key-value pairs)
// to be attached to the request. Must have an even length.
//
// Slice must not be mutated until the operation completes.
func (x *PrmObjectDelete) WithXHeaders(hs ...string) {
writeXHeadersToMeta(hs, &x.meta)
}
// ResObjectDelete groups resulting values of ObjectDelete operation.
type ResObjectDelete struct {
statusRes
tomb oid.ID
}
// Tombstone returns identifier of the created tombstone object.
func (x ResObjectDelete) Tombstone() oid.ID {
return x.tomb
}
// ObjectDelete marks an object for deletion from the container using FrostFS API protocol.
// As a marker, a special unit called a tombstone is placed in the container.
// It confirms the user's intent to delete the object, and is itself a container object.
// Explicit deletion is done asynchronously, and is generally not guaranteed.
//
// Returns a list of checksums in raw form: the format of hashes and their number
// is left for the caller to check. Client preserves the order of the server's response.
//
// Exactly one return value is non-nil. By default, server status is returned in res structure.
// Any client's internal or transport errors are returned as `error`,
// If PrmInit.ResolveFrostFSFailures has been called, unsuccessful
// FrostFS status codes are returned as `error`, otherwise, are included
// in the returned result structure.
//
// Returns an error if parameters are set incorrectly (see PrmObjectDelete docs).
// Context is required and must not be nil. It is used for network communication.
//
// Return statuses:
// - global (see Client docs)
// - *apistatus.ContainerNotFound;
// - *apistatus.ObjectAccessDenied;
// - *apistatus.ObjectLocked;
// - *apistatus.SessionTokenExpired.
func (c *Client) ObjectDelete(ctx context.Context, prm PrmObjectDelete) (*ResObjectDelete, error) {
switch {
case prm.addr.GetContainerID() == nil:
return nil, errorMissingContainer
case prm.addr.GetObjectID() == nil:
return nil, errorMissingObject
}
// form request body
prm.body.SetAddress(&prm.addr)
// form request
var req v2object.DeleteRequest
req.SetBody(&prm.body)
c.prepareRequest(&req, &prm.meta)
key := c.prm.key
if prm.keySet {
key = prm.key
}
err := signature.SignServiceMessage(&key, &req)
if err != nil {
return nil, fmt.Errorf("sign request: %w", err)
}
resp, err := rpcapi.DeleteObject(&c.c, &req, client.WithContext(ctx))
if err != nil {
return nil, err
}
var res ResObjectDelete
res.st, err = c.processResponse(resp)
if err != nil {
return nil, err
}
if !apistatus.IsSuccessful(res.st) {
return &res, nil
}
const fieldTombstone = "tombstone"
idTombV2 := resp.GetBody().GetTombstone().GetObjectID()
if idTombV2 == nil {
return nil, newErrMissingResponseField(fieldTombstone)
}
err = res.tomb.ReadFromV2(*idTombV2)
if err != nil {
return nil, newErrInvalidResponseField(fieldTombstone, err)
}
return &res, nil
}