frostfs-sdk-go/client/container_get.go

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package client
import (
"context"
"errors"
"fmt"
v2container "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/container"
"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"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
)
// PrmContainerGet groups parameters of ContainerGet operation.
type PrmContainerGet struct {
// FrostFS request X-Headers.
XHeaders []string
ContainerID *cid.ID
Session *session.Container
}
// SetContainer sets identifier of the container to be read.
// Required parameter.
//
// Deprecated: Use PrmContainerGet.ContainerID instead.
func (prm *PrmContainerGet) SetContainer(cid cid.ID) {
prm.ContainerID = &cid
}
func (prm *PrmContainerGet) buildRequest(c *Client) (*v2container.GetRequest, error) {
if prm.ContainerID == nil {
return nil, errorMissingContainer
}
if len(prm.XHeaders)%2 != 0 {
return nil, errorInvalidXHeaders
}
var cidV2 refs.ContainerID
prm.ContainerID.WriteToV2(&cidV2)
reqBody := new(v2container.GetRequestBody)
reqBody.SetContainerID(&cidV2)
var meta v2session.RequestMetaHeader
writeXHeadersToMeta(prm.XHeaders, &meta)
if prm.Session != nil {
var tokv2 v2session.Token
prm.Session.WriteToV2(&tokv2)
meta.SetSessionToken(&tokv2)
}
var req v2container.GetRequest
req.SetBody(reqBody)
c.prepareRequest(&req, &meta)
return &req, nil
}
// ResContainerGet groups resulting values of ContainerGet operation.
type ResContainerGet struct {
statusRes
cnr container.Container
}
// Container returns structured information about the requested container.
//
// Client doesn't retain value so modification is safe.
func (x ResContainerGet) Container() container.Container {
return x.cnr
}
// ContainerGet reads FrostFS container by ID.
//
// 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.DisableFrostFSFailuresResolution has been called, unsuccessful
// FrostFS status codes are included in the returned result structure,
// otherwise, are also returned as `error`.
//
// Returns an error if parameters are set incorrectly (see PrmContainerGet docs).
// Context is required and must not be nil. It is used for network communication.
//
// Return statuses:
// - global (see Client docs);
// - *apistatus.ContainerNotFound.
func (c *Client) ContainerGet(ctx context.Context, prm PrmContainerGet) (*ResContainerGet, error) {
req, err := prm.buildRequest(c)
if err != nil {
return nil, err
}
if err := signature.SignServiceMessage(&c.prm.Key, req); err != nil {
return nil, fmt.Errorf("sign request: %w", err)
}
resp, err := rpcapi.GetContainer(&c.c, req, client.WithContext(ctx))
if err != nil {
return nil, err
}
var res ResContainerGet
res.st, err = c.processResponse(resp)
if err != nil || !apistatus.IsSuccessful(res.st) {
return &res, err
}
cnrV2 := resp.GetBody().GetContainer()
if cnrV2 == nil {
return &res, errors.New("missing container in response")
}
if err := res.cnr.ReadFromV2(*cnrV2); err != nil {
return &res, fmt.Errorf("invalid container in response: %w", err)
}
return &res, nil
}