frostfs-sdk-go/pool/pool.go
Denis Kirillov 981d24a493 [#84] pool: Allow to pass gRPC dial options
Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>
2023-06-08 15:54:48 +03:00

2707 lines
72 KiB
Go

package pool
import (
"bytes"
"context"
"crypto/ecdsa"
"errors"
"fmt"
"io"
"math"
"math/rand"
"sort"
"sync"
"sync/atomic"
"time"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/accounting"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/bearer"
sdkClient "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client"
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"
frostfsecdsa "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/crypto/ecdsa"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/netmap"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/relations"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
"github.com/google/uuid"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"google.golang.org/grpc"
)
// client represents virtual connection to the single FrostFS network endpoint from which Pool is formed.
// This interface is expected to have exactly one production implementation - clientWrapper.
// Others are expected to be for test purposes only.
type client interface {
// see clientWrapper.balanceGet.
balanceGet(context.Context, PrmBalanceGet) (accounting.Decimal, error)
// see clientWrapper.containerPut.
containerPut(context.Context, PrmContainerPut) (cid.ID, error)
// see clientWrapper.containerGet.
containerGet(context.Context, PrmContainerGet) (container.Container, error)
// see clientWrapper.containerList.
containerList(context.Context, PrmContainerList) ([]cid.ID, error)
// see clientWrapper.containerDelete.
containerDelete(context.Context, PrmContainerDelete) error
// see clientWrapper.containerEACL.
containerEACL(context.Context, PrmContainerEACL) (eacl.Table, error)
// see clientWrapper.containerSetEACL.
containerSetEACL(context.Context, PrmContainerSetEACL) error
// see clientWrapper.endpointInfo.
endpointInfo(context.Context, prmEndpointInfo) (netmap.NodeInfo, error)
// see clientWrapper.networkInfo.
networkInfo(context.Context, prmNetworkInfo) (netmap.NetworkInfo, error)
// see clientWrapper.objectPut.
objectPut(context.Context, PrmObjectPut) (oid.ID, error)
// see clientWrapper.objectDelete.
objectDelete(context.Context, PrmObjectDelete) error
// see clientWrapper.objectGet.
objectGet(context.Context, PrmObjectGet) (ResGetObject, error)
// see clientWrapper.objectHead.
objectHead(context.Context, PrmObjectHead) (object.Object, error)
// see clientWrapper.objectRange.
objectRange(context.Context, PrmObjectRange) (ResObjectRange, error)
// see clientWrapper.objectSearch.
objectSearch(context.Context, PrmObjectSearch) (ResObjectSearch, error)
// see clientWrapper.sessionCreate.
sessionCreate(context.Context, prmCreateSession) (resCreateSession, error)
clientStatus
// see clientWrapper.dial.
dial(ctx context.Context) error
// see clientWrapper.restartIfUnhealthy.
restartIfUnhealthy(ctx context.Context) (bool, bool)
}
// clientStatus provide access to some metrics for connection.
type clientStatus interface {
// isHealthy checks if the connection can handle requests.
isHealthy() bool
// setUnhealthy marks client as unhealthy.
setUnhealthy()
// address return address of endpoint.
address() string
// currentErrorRate returns current errors rate.
// After specific threshold connection is considered as unhealthy.
// Pool.startRebalance routine can make this connection healthy again.
currentErrorRate() uint32
// overallErrorRate returns the number of all happened errors.
overallErrorRate() uint64
// methodsStatus returns statistic for all used methods.
methodsStatus() []statusSnapshot
}
// errPoolClientUnhealthy is an error to indicate that client in pool is unhealthy.
var errPoolClientUnhealthy = errors.New("pool client unhealthy")
// clientStatusMonitor count error rate and other statistics for connection.
type clientStatusMonitor struct {
logger *zap.Logger
addr string
healthy *atomic.Bool
errorThreshold uint32
mu sync.RWMutex // protect counters
currentErrorCount uint32
overallErrorCount uint64
methods []*methodStatus
}
// methodStatus provide statistic for specific method.
type methodStatus struct {
name string
mu sync.RWMutex // protect counters
statusSnapshot
}
// statusSnapshot is statistic for specific method.
type statusSnapshot struct {
allTime uint64
allRequests uint64
}
// MethodIndex index of method in list of statuses in clientStatusMonitor.
type MethodIndex int
const (
methodBalanceGet MethodIndex = iota
methodContainerPut
methodContainerGet
methodContainerList
methodContainerDelete
methodContainerEACL
methodContainerSetEACL
methodEndpointInfo
methodNetworkInfo
methodObjectPut
methodObjectDelete
methodObjectGet
methodObjectHead
methodObjectRange
methodSessionCreate
methodLast
)
// String implements fmt.Stringer.
func (m MethodIndex) String() string {
switch m {
case methodBalanceGet:
return "balanceGet"
case methodContainerPut:
return "containerPut"
case methodContainerGet:
return "containerGet"
case methodContainerList:
return "containerList"
case methodContainerDelete:
return "containerDelete"
case methodContainerEACL:
return "containerEACL"
case methodContainerSetEACL:
return "containerSetEACL"
case methodEndpointInfo:
return "endpointInfo"
case methodNetworkInfo:
return "networkInfo"
case methodObjectPut:
return "objectPut"
case methodObjectDelete:
return "objectDelete"
case methodObjectGet:
return "objectGet"
case methodObjectHead:
return "objectHead"
case methodObjectRange:
return "objectRange"
case methodSessionCreate:
return "sessionCreate"
case methodLast:
return "it's a system name rather than a method"
default:
return "unknown"
}
}
func newClientStatusMonitor(logger *zap.Logger, addr string, errorThreshold uint32) clientStatusMonitor {
methods := make([]*methodStatus, methodLast)
for i := methodBalanceGet; i < methodLast; i++ {
methods[i] = &methodStatus{name: i.String()}
}
healthy := new(atomic.Bool)
healthy.Store(true)
return clientStatusMonitor{
logger: logger,
addr: addr,
healthy: healthy,
errorThreshold: errorThreshold,
methods: methods,
}
}
func (m *methodStatus) snapshot() statusSnapshot {
m.mu.RLock()
defer m.mu.RUnlock()
return m.statusSnapshot
}
func (m *methodStatus) incRequests(elapsed time.Duration) {
m.mu.Lock()
defer m.mu.Unlock()
m.allTime += uint64(elapsed)
m.allRequests++
}
// clientWrapper is used by default, alternative implementations are intended for testing purposes only.
type clientWrapper struct {
clientMutex sync.RWMutex
client *sdkClient.Client
prm wrapperPrm
clientStatusMonitor
}
// wrapperPrm is params to create clientWrapper.
type wrapperPrm struct {
logger *zap.Logger
address string
key ecdsa.PrivateKey
dialTimeout time.Duration
streamTimeout time.Duration
errorThreshold uint32
responseInfoCallback func(sdkClient.ResponseMetaInfo) error
poolRequestInfoCallback func(RequestInfo)
dialOptions []grpc.DialOption
}
// setAddress sets endpoint to connect in FrostFS network.
func (x *wrapperPrm) setAddress(address string) {
x.address = address
}
// setKey sets sdkClient.Client private key to be used for the protocol communication by default.
func (x *wrapperPrm) setKey(key ecdsa.PrivateKey) {
x.key = key
}
// setDialTimeout sets the timeout for connection to be established.
func (x *wrapperPrm) setDialTimeout(timeout time.Duration) {
x.dialTimeout = timeout
}
// setStreamTimeout sets the timeout for individual operations in streaming RPC.
func (x *wrapperPrm) setStreamTimeout(timeout time.Duration) {
x.streamTimeout = timeout
}
// setErrorThreshold sets threshold after reaching which connection is considered unhealthy
// until Pool.startRebalance routing updates its status.
func (x *wrapperPrm) setErrorThreshold(threshold uint32) {
x.errorThreshold = threshold
}
// setPoolRequestCallback sets callback that will be invoked after every pool response.
func (x *wrapperPrm) setPoolRequestCallback(f func(RequestInfo)) {
x.poolRequestInfoCallback = f
}
// setResponseInfoCallback sets callback that will be invoked after every response.
func (x *wrapperPrm) setResponseInfoCallback(f func(sdkClient.ResponseMetaInfo) error) {
x.responseInfoCallback = f
}
// setGRPCDialOptions sets the gRPC dial options for new gRPC client connection.
func (x *wrapperPrm) setGRPCDialOptions(opts []grpc.DialOption) {
x.dialOptions = opts
}
// newWrapper creates a clientWrapper that implements the client interface.
func newWrapper(prm wrapperPrm) *clientWrapper {
var cl sdkClient.Client
var prmInit sdkClient.PrmInit
prmInit.SetDefaultPrivateKey(prm.key)
prmInit.SetResponseInfoCallback(prm.responseInfoCallback)
cl.Init(prmInit)
res := &clientWrapper{
client: &cl,
clientStatusMonitor: newClientStatusMonitor(prm.logger, prm.address, prm.errorThreshold),
prm: prm,
}
return res
}
// dial establishes a connection to the server from the FrostFS network.
// Returns an error describing failure reason. If failed, the client
// SHOULD NOT be used.
func (c *clientWrapper) dial(ctx context.Context) error {
cl, err := c.getClient()
if err != nil {
return err
}
var prmDial sdkClient.PrmDial
prmDial.SetServerURI(c.prm.address)
prmDial.SetTimeout(c.prm.dialTimeout)
prmDial.SetStreamTimeout(c.prm.streamTimeout)
prmDial.SetGRPCDialOptions(c.prm.dialOptions...)
if err = cl.Dial(ctx, prmDial); err != nil {
c.setUnhealthy()
return err
}
return nil
}
// restartIfUnhealthy checks healthy status of client and recreate it if status is unhealthy.
// Return current healthy status and indicating if status was changed by this function call.
func (c *clientWrapper) restartIfUnhealthy(ctx context.Context) (healthy, changed bool) {
var wasHealthy bool
if _, err := c.endpointInfo(ctx, prmEndpointInfo{}); err == nil {
return true, false
} else if !errors.Is(err, errPoolClientUnhealthy) {
wasHealthy = true
}
var cl sdkClient.Client
var prmInit sdkClient.PrmInit
prmInit.SetDefaultPrivateKey(c.prm.key)
prmInit.SetResponseInfoCallback(c.prm.responseInfoCallback)
cl.Init(prmInit)
var prmDial sdkClient.PrmDial
prmDial.SetServerURI(c.prm.address)
prmDial.SetTimeout(c.prm.dialTimeout)
prmDial.SetStreamTimeout(c.prm.streamTimeout)
prmDial.SetGRPCDialOptions(c.prm.dialOptions...)
if err := cl.Dial(ctx, prmDial); err != nil {
c.setUnhealthy()
return false, wasHealthy
}
c.clientMutex.Lock()
c.client = &cl
c.clientMutex.Unlock()
if _, err := cl.EndpointInfo(ctx, sdkClient.PrmEndpointInfo{}); err != nil {
c.setUnhealthy()
return false, wasHealthy
}
c.setHealthy()
return true, !wasHealthy
}
func (c *clientWrapper) getClient() (*sdkClient.Client, error) {
c.clientMutex.RLock()
defer c.clientMutex.RUnlock()
if c.isHealthy() {
return c.client, nil
}
return nil, errPoolClientUnhealthy
}
// balanceGet invokes sdkClient.BalanceGet parse response status to error and return result as is.
func (c *clientWrapper) balanceGet(ctx context.Context, prm PrmBalanceGet) (accounting.Decimal, error) {
cl, err := c.getClient()
if err != nil {
return accounting.Decimal{}, err
}
var cliPrm sdkClient.PrmBalanceGet
cliPrm.SetAccount(prm.account)
start := time.Now()
res, err := cl.BalanceGet(ctx, cliPrm)
c.incRequests(time.Since(start), methodBalanceGet)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return accounting.Decimal{}, fmt.Errorf("balance get on client: %w", err)
}
return res.Amount(), nil
}
// containerPut invokes sdkClient.ContainerPut parse response status to error and return result as is.
// It also waits for the container to appear on the network.
func (c *clientWrapper) containerPut(ctx context.Context, prm PrmContainerPut) (cid.ID, error) {
cl, err := c.getClient()
if err != nil {
return cid.ID{}, err
}
start := time.Now()
res, err := cl.ContainerPut(ctx, prm.prmClient)
c.incRequests(time.Since(start), methodContainerPut)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return cid.ID{}, fmt.Errorf("container put on client: %w", err)
}
if !prm.waitParamsSet {
prm.waitParams.setDefaults()
}
idCnr := res.ID()
err = waitForContainerPresence(ctx, c, idCnr, &prm.waitParams)
if err = c.handleError(ctx, nil, err); err != nil {
return cid.ID{}, fmt.Errorf("wait container presence on client: %w", err)
}
return idCnr, nil
}
// containerGet invokes sdkClient.ContainerGet parse response status to error and return result as is.
func (c *clientWrapper) containerGet(ctx context.Context, prm PrmContainerGet) (container.Container, error) {
cl, err := c.getClient()
if err != nil {
return container.Container{}, err
}
var cliPrm sdkClient.PrmContainerGet
cliPrm.SetContainer(prm.cnrID)
start := time.Now()
res, err := cl.ContainerGet(ctx, cliPrm)
c.incRequests(time.Since(start), methodContainerGet)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return container.Container{}, fmt.Errorf("container get on client: %w", err)
}
return res.Container(), nil
}
// containerList invokes sdkClient.ContainerList parse response status to error and return result as is.
func (c *clientWrapper) containerList(ctx context.Context, prm PrmContainerList) ([]cid.ID, error) {
cl, err := c.getClient()
if err != nil {
return nil, err
}
var cliPrm sdkClient.PrmContainerList
cliPrm.SetAccount(prm.ownerID)
start := time.Now()
res, err := cl.ContainerList(ctx, cliPrm)
c.incRequests(time.Since(start), methodContainerList)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return nil, fmt.Errorf("container list on client: %w", err)
}
return res.Containers(), nil
}
// containerDelete invokes sdkClient.ContainerDelete parse response status to error.
// It also waits for the container to be removed from the network.
func (c *clientWrapper) containerDelete(ctx context.Context, prm PrmContainerDelete) error {
cl, err := c.getClient()
if err != nil {
return err
}
var cliPrm sdkClient.PrmContainerDelete
cliPrm.SetContainer(prm.cnrID)
if prm.stokenSet {
cliPrm.WithinSession(prm.stoken)
}
start := time.Now()
res, err := cl.ContainerDelete(ctx, cliPrm)
c.incRequests(time.Since(start), methodContainerDelete)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return fmt.Errorf("container delete on client: %w", err)
}
if !prm.waitParamsSet {
prm.waitParams.setDefaults()
}
return waitForContainerRemoved(ctx, c, &prm.cnrID, &prm.waitParams)
}
// containerEACL invokes sdkClient.ContainerEACL parse response status to error and return result as is.
func (c *clientWrapper) containerEACL(ctx context.Context, prm PrmContainerEACL) (eacl.Table, error) {
cl, err := c.getClient()
if err != nil {
return eacl.Table{}, err
}
var cliPrm sdkClient.PrmContainerEACL
cliPrm.SetContainer(prm.cnrID)
start := time.Now()
res, err := cl.ContainerEACL(ctx, cliPrm)
c.incRequests(time.Since(start), methodContainerEACL)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return eacl.Table{}, fmt.Errorf("get eacl on client: %w", err)
}
return res.Table(), nil
}
// containerSetEACL invokes sdkClient.ContainerSetEACL parse response status to error.
// It also waits for the EACL to appear on the network.
func (c *clientWrapper) containerSetEACL(ctx context.Context, prm PrmContainerSetEACL) error {
cl, err := c.getClient()
if err != nil {
return err
}
var cliPrm sdkClient.PrmContainerSetEACL
cliPrm.SetTable(prm.table)
if prm.sessionSet {
cliPrm.WithinSession(prm.session)
}
start := time.Now()
res, err := cl.ContainerSetEACL(ctx, cliPrm)
c.incRequests(time.Since(start), methodContainerSetEACL)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return fmt.Errorf("set eacl on client: %w", err)
}
if !prm.waitParamsSet {
prm.waitParams.setDefaults()
}
var cIDp *cid.ID
if cID, set := prm.table.CID(); set {
cIDp = &cID
}
err = waitForEACLPresence(ctx, c, cIDp, &prm.table, &prm.waitParams)
if err = c.handleError(ctx, nil, err); err != nil {
return fmt.Errorf("wait eacl presence on client: %w", err)
}
return nil
}
// endpointInfo invokes sdkClient.EndpointInfo parse response status to error and return result as is.
func (c *clientWrapper) endpointInfo(ctx context.Context, _ prmEndpointInfo) (netmap.NodeInfo, error) {
cl, err := c.getClient()
if err != nil {
return netmap.NodeInfo{}, err
}
start := time.Now()
res, err := cl.EndpointInfo(ctx, sdkClient.PrmEndpointInfo{})
c.incRequests(time.Since(start), methodEndpointInfo)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return netmap.NodeInfo{}, fmt.Errorf("endpoint info on client: %w", err)
}
return res.NodeInfo(), nil
}
// networkInfo invokes sdkClient.NetworkInfo parse response status to error and return result as is.
func (c *clientWrapper) networkInfo(ctx context.Context, _ prmNetworkInfo) (netmap.NetworkInfo, error) {
cl, err := c.getClient()
if err != nil {
return netmap.NetworkInfo{}, err
}
start := time.Now()
res, err := cl.NetworkInfo(ctx, sdkClient.PrmNetworkInfo{})
c.incRequests(time.Since(start), methodNetworkInfo)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return netmap.NetworkInfo{}, fmt.Errorf("network info on client: %w", err)
}
return res.Info(), nil
}
// objectPut writes object to FrostFS.
func (c *clientWrapper) objectPut(ctx context.Context, prm PrmObjectPut) (oid.ID, error) {
cl, err := c.getClient()
if err != nil {
return oid.ID{}, err
}
var cliPrm sdkClient.PrmObjectPutInit
cliPrm.SetCopiesNumberByVectors(prm.copiesNumber)
if prm.stoken != nil {
cliPrm.WithinSession(*prm.stoken)
}
if prm.key != nil {
cliPrm.UseKey(*prm.key)
}
if prm.btoken != nil {
cliPrm.WithBearerToken(*prm.btoken)
}
start := time.Now()
wObj, err := cl.ObjectPutInit(ctx, cliPrm)
c.incRequests(time.Since(start), methodObjectPut)
if err = c.handleError(ctx, nil, err); err != nil {
return oid.ID{}, fmt.Errorf("init writing on API client: %w", err)
}
if wObj.WriteHeader(prm.hdr) {
sz := prm.hdr.PayloadSize()
if data := prm.hdr.Payload(); len(data) > 0 {
if prm.payload != nil {
prm.payload = io.MultiReader(bytes.NewReader(data), prm.payload)
} else {
prm.payload = bytes.NewReader(data)
sz = uint64(len(data))
}
}
if prm.payload != nil {
const defaultBufferSizePut = 3 << 20 // configure?
if sz == 0 || sz > defaultBufferSizePut {
sz = defaultBufferSizePut
}
buf := make([]byte, sz)
var n int
for {
n, err = prm.payload.Read(buf)
if n > 0 {
start = time.Now()
successWrite := wObj.WritePayloadChunk(buf[:n])
c.incRequests(time.Since(start), methodObjectPut)
if !successWrite {
break
}
continue
}
if errors.Is(err, io.EOF) {
break
}
return oid.ID{}, fmt.Errorf("read payload: %w", c.handleError(ctx, nil, err))
}
}
}
res, err := wObj.Close()
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil { // here err already carries both status and client errors
return oid.ID{}, fmt.Errorf("client failure: %w", err)
}
return res.StoredObjectID(), nil
}
// objectDelete invokes sdkClient.ObjectDelete parse response status to error.
func (c *clientWrapper) objectDelete(ctx context.Context, prm PrmObjectDelete) error {
cl, err := c.getClient()
if err != nil {
return err
}
var cliPrm sdkClient.PrmObjectDelete
cliPrm.FromContainer(prm.addr.Container())
cliPrm.ByID(prm.addr.Object())
if prm.stoken != nil {
cliPrm.WithinSession(*prm.stoken)
}
if prm.btoken != nil {
cliPrm.WithBearerToken(*prm.btoken)
}
if prm.key != nil {
cliPrm.UseKey(*prm.key)
}
start := time.Now()
res, err := cl.ObjectDelete(ctx, cliPrm)
c.incRequests(time.Since(start), methodObjectDelete)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return fmt.Errorf("delete object on client: %w", err)
}
return nil
}
// objectGet returns reader for object.
func (c *clientWrapper) objectGet(ctx context.Context, prm PrmObjectGet) (ResGetObject, error) {
cl, err := c.getClient()
if err != nil {
return ResGetObject{}, err
}
var cliPrm sdkClient.PrmObjectGet
cliPrm.FromContainer(prm.addr.Container())
cliPrm.ByID(prm.addr.Object())
if prm.stoken != nil {
cliPrm.WithinSession(*prm.stoken)
}
if prm.btoken != nil {
cliPrm.WithBearerToken(*prm.btoken)
}
if prm.key != nil {
cliPrm.UseKey(*prm.key)
}
var res ResGetObject
rObj, err := cl.ObjectGetInit(ctx, cliPrm)
if err = c.handleError(ctx, nil, err); err != nil {
return ResGetObject{}, fmt.Errorf("init object reading on client: %w", err)
}
start := time.Now()
successReadHeader := rObj.ReadHeader(&res.Header)
c.incRequests(time.Since(start), methodObjectGet)
if !successReadHeader {
rObjRes, err := rObj.Close()
var st apistatus.Status
if rObjRes != nil {
st = rObjRes.Status()
}
err = c.handleError(ctx, st, err)
return res, fmt.Errorf("read header: %w", err)
}
res.Payload = &objectReadCloser{
reader: rObj,
elapsedTimeCallback: func(elapsed time.Duration) {
c.incRequests(elapsed, methodObjectGet)
},
}
return res, nil
}
// objectHead invokes sdkClient.ObjectHead parse response status to error and return result as is.
func (c *clientWrapper) objectHead(ctx context.Context, prm PrmObjectHead) (object.Object, error) {
cl, err := c.getClient()
if err != nil {
return object.Object{}, err
}
var cliPrm sdkClient.PrmObjectHead
cliPrm.FromContainer(prm.addr.Container())
cliPrm.ByID(prm.addr.Object())
if prm.raw {
cliPrm.MarkRaw()
}
if prm.stoken != nil {
cliPrm.WithinSession(*prm.stoken)
}
if prm.btoken != nil {
cliPrm.WithBearerToken(*prm.btoken)
}
if prm.key != nil {
cliPrm.UseKey(*prm.key)
}
var obj object.Object
start := time.Now()
res, err := cl.ObjectHead(ctx, cliPrm)
c.incRequests(time.Since(start), methodObjectHead)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return obj, fmt.Errorf("read object header via client: %w", err)
}
if !res.ReadHeader(&obj) {
return obj, errors.New("missing object header in response")
}
return obj, nil
}
// objectRange returns object range reader.
func (c *clientWrapper) objectRange(ctx context.Context, prm PrmObjectRange) (ResObjectRange, error) {
cl, err := c.getClient()
if err != nil {
return ResObjectRange{}, err
}
var cliPrm sdkClient.PrmObjectRange
cliPrm.FromContainer(prm.addr.Container())
cliPrm.ByID(prm.addr.Object())
cliPrm.SetOffset(prm.off)
cliPrm.SetLength(prm.ln)
if prm.stoken != nil {
cliPrm.WithinSession(*prm.stoken)
}
if prm.btoken != nil {
cliPrm.WithBearerToken(*prm.btoken)
}
if prm.key != nil {
cliPrm.UseKey(*prm.key)
}
start := time.Now()
res, err := cl.ObjectRangeInit(ctx, cliPrm)
c.incRequests(time.Since(start), methodObjectRange)
if err = c.handleError(ctx, nil, err); err != nil {
return ResObjectRange{}, fmt.Errorf("init payload range reading on client: %w", err)
}
return ResObjectRange{
payload: res,
elapsedTimeCallback: func(elapsed time.Duration) {
c.incRequests(elapsed, methodObjectRange)
},
}, nil
}
// objectSearch invokes sdkClient.ObjectSearchInit parse response status to error and return result as is.
func (c *clientWrapper) objectSearch(ctx context.Context, prm PrmObjectSearch) (ResObjectSearch, error) {
cl, err := c.getClient()
if err != nil {
return ResObjectSearch{}, err
}
var cliPrm sdkClient.PrmObjectSearch
cliPrm.InContainer(prm.cnrID)
cliPrm.SetFilters(prm.filters)
if prm.stoken != nil {
cliPrm.WithinSession(*prm.stoken)
}
if prm.btoken != nil {
cliPrm.WithBearerToken(*prm.btoken)
}
if prm.key != nil {
cliPrm.UseKey(*prm.key)
}
res, err := cl.ObjectSearchInit(ctx, cliPrm)
if err = c.handleError(ctx, nil, err); err != nil {
return ResObjectSearch{}, fmt.Errorf("init object searching on client: %w", err)
}
return ResObjectSearch{r: res}, nil
}
// sessionCreate invokes sdkClient.SessionCreate parse response status to error and return result as is.
func (c *clientWrapper) sessionCreate(ctx context.Context, prm prmCreateSession) (resCreateSession, error) {
cl, err := c.getClient()
if err != nil {
return resCreateSession{}, err
}
var cliPrm sdkClient.PrmSessionCreate
cliPrm.SetExp(prm.exp)
cliPrm.UseKey(prm.key)
start := time.Now()
res, err := cl.SessionCreate(ctx, cliPrm)
c.incRequests(time.Since(start), methodSessionCreate)
var st apistatus.Status
if res != nil {
st = res.Status()
}
if err = c.handleError(ctx, st, err); err != nil {
return resCreateSession{}, fmt.Errorf("session creation on client: %w", err)
}
return resCreateSession{
id: res.ID(),
sessionKey: res.PublicKey(),
}, nil
}
func (c *clientStatusMonitor) isHealthy() bool {
return c.healthy.Load()
}
func (c *clientStatusMonitor) setHealthy() {
c.healthy.Store(true)
}
func (c *clientStatusMonitor) setUnhealthy() {
c.healthy.Store(false)
}
func (c *clientStatusMonitor) address() string {
return c.addr
}
func (c *clientStatusMonitor) incErrorRate() {
c.mu.Lock()
c.currentErrorCount++
c.overallErrorCount++
thresholdReached := c.currentErrorCount >= c.errorThreshold
if thresholdReached {
c.setUnhealthy()
c.currentErrorCount = 0
}
c.mu.Unlock()
if thresholdReached && c.logger != nil {
c.logger.Warn("error threshold reached",
zap.String("address", c.addr), zap.Uint32("threshold", c.errorThreshold))
}
}
func (c *clientStatusMonitor) currentErrorRate() uint32 {
c.mu.RLock()
defer c.mu.RUnlock()
return c.currentErrorCount
}
func (c *clientStatusMonitor) overallErrorRate() uint64 {
c.mu.RLock()
defer c.mu.RUnlock()
return c.overallErrorCount
}
func (c *clientStatusMonitor) methodsStatus() []statusSnapshot {
result := make([]statusSnapshot, len(c.methods))
for i, val := range c.methods {
result[i] = val.snapshot()
}
return result
}
func (c *clientWrapper) incRequests(elapsed time.Duration, method MethodIndex) {
methodStat := c.methods[method]
methodStat.incRequests(elapsed)
if c.prm.poolRequestInfoCallback != nil {
c.prm.poolRequestInfoCallback(RequestInfo{
Address: c.prm.address,
Method: method,
Elapsed: elapsed,
})
}
}
func (c *clientStatusMonitor) handleError(ctx context.Context, st apistatus.Status, err error) error {
if err != nil {
if needCountError(ctx, err) {
c.incErrorRate()
}
return err
}
err = apistatus.ErrFromStatus(st)
switch err.(type) {
case apistatus.ServerInternal, *apistatus.ServerInternal,
apistatus.WrongMagicNumber, *apistatus.WrongMagicNumber,
apistatus.SignatureVerification, *apistatus.SignatureVerification,
apistatus.NodeUnderMaintenance, *apistatus.NodeUnderMaintenance:
c.incErrorRate()
}
return err
}
func needCountError(ctx context.Context, err error) bool {
// non-status logic error that could be returned
// from the SDK client; should not be considered
// as a connection error
var siErr *object.SplitInfoError
if errors.As(err, &siErr) {
return false
}
if errors.Is(ctx.Err(), context.Canceled) {
return false
}
return true
}
// clientBuilder is a type alias of client constructors which open connection
// to the given endpoint.
type clientBuilder = func(endpoint string) client
// RequestInfo groups info about pool request.
type RequestInfo struct {
Address string
Method MethodIndex
Elapsed time.Duration
}
// InitParameters contains values used to initialize connection Pool.
type InitParameters struct {
key *ecdsa.PrivateKey
logger *zap.Logger
nodeDialTimeout time.Duration
nodeStreamTimeout time.Duration
healthcheckTimeout time.Duration
clientRebalanceInterval time.Duration
sessionExpirationDuration uint64
errorThreshold uint32
nodeParams []NodeParam
requestCallback func(RequestInfo)
dialOptions []grpc.DialOption
clientBuilder clientBuilder
}
// SetKey specifies default key to be used for the protocol communication by default.
func (x *InitParameters) SetKey(key *ecdsa.PrivateKey) {
x.key = key
}
// SetLogger specifies logger.
func (x *InitParameters) SetLogger(logger *zap.Logger) {
x.logger = logger
}
// SetNodeDialTimeout specifies the timeout for connection to be established.
func (x *InitParameters) SetNodeDialTimeout(timeout time.Duration) {
x.nodeDialTimeout = timeout
}
// SetNodeStreamTimeout specifies the timeout for individual operations in streaming RPC.
func (x *InitParameters) SetNodeStreamTimeout(timeout time.Duration) {
x.nodeStreamTimeout = timeout
}
// SetHealthcheckTimeout specifies the timeout for request to node to decide if it is alive.
//
// See also Pool.Dial.
func (x *InitParameters) SetHealthcheckTimeout(timeout time.Duration) {
x.healthcheckTimeout = timeout
}
// SetClientRebalanceInterval specifies the interval for updating nodes health status.
//
// See also Pool.Dial.
func (x *InitParameters) SetClientRebalanceInterval(interval time.Duration) {
x.clientRebalanceInterval = interval
}
// SetSessionExpirationDuration specifies the session token lifetime in epochs.
func (x *InitParameters) SetSessionExpirationDuration(expirationDuration uint64) {
x.sessionExpirationDuration = expirationDuration
}
// SetErrorThreshold specifies the number of errors on connection after which node is considered as unhealthy.
func (x *InitParameters) SetErrorThreshold(threshold uint32) {
x.errorThreshold = threshold
}
// SetRequestCallback makes the pool client to pass RequestInfo for each
// request to f. Nil (default) means ignore RequestInfo.
func (x *InitParameters) SetRequestCallback(f func(RequestInfo)) {
x.requestCallback = f
}
// AddNode append information about the node to which you want to connect.
func (x *InitParameters) AddNode(nodeParam NodeParam) {
x.nodeParams = append(x.nodeParams, nodeParam)
}
// SetGRPCDialOptions sets the gRPC dial options for new gRPC client connection.
func (x *InitParameters) SetGRPCDialOptions(opts ...grpc.DialOption) {
x.dialOptions = opts
}
// setClientBuilder sets clientBuilder used for client construction.
// Wraps setClientBuilderContext without a context.
func (x *InitParameters) setClientBuilder(builder clientBuilder) {
x.clientBuilder = builder
}
// isMissingClientBuilder checks if client constructor was not specified.
func (x *InitParameters) isMissingClientBuilder() bool {
return x.clientBuilder == nil
}
type rebalanceParameters struct {
nodesParams []*nodesParam
nodeRequestTimeout time.Duration
clientRebalanceInterval time.Duration
sessionExpirationDuration uint64
}
type nodesParam struct {
priority int
addresses []string
weights []float64
}
// NodeParam groups parameters of remote node.
type NodeParam struct {
priority int
address string
weight float64
}
// NewNodeParam creates NodeParam using parameters.
func NewNodeParam(priority int, address string, weight float64) (prm NodeParam) {
prm.SetPriority(priority)
prm.SetAddress(address)
prm.SetWeight(weight)
return
}
// SetPriority specifies priority of the node.
// Negative value is allowed. In the result node groups
// with the same priority will be sorted by descent.
func (x *NodeParam) SetPriority(priority int) {
x.priority = priority
}
// Priority returns priority of the node.
func (x *NodeParam) Priority() int {
return x.priority
}
// SetAddress specifies address of the node.
func (x *NodeParam) SetAddress(address string) {
x.address = address
}
// Address returns address of the node.
func (x *NodeParam) Address() string {
return x.address
}
// SetWeight specifies weight of the node.
func (x *NodeParam) SetWeight(weight float64) {
x.weight = weight
}
// Weight returns weight of the node.
func (x *NodeParam) Weight() float64 {
return x.weight
}
// WaitParams contains parameters used in polling is a something applied on FrostFS network.
type WaitParams struct {
timeout time.Duration
pollInterval time.Duration
}
// SetTimeout specifies the time to wait for the operation to complete.
func (x *WaitParams) SetTimeout(timeout time.Duration) {
x.timeout = timeout
}
// SetPollInterval specifies the interval, once it will check the completion of the operation.
func (x *WaitParams) SetPollInterval(tick time.Duration) {
x.pollInterval = tick
}
func (x *WaitParams) setDefaults() {
x.timeout = 120 * time.Second
x.pollInterval = 5 * time.Second
}
// checkForPositive panics if any of the wait params isn't positive.
func (x *WaitParams) checkForPositive() {
if x.timeout <= 0 || x.pollInterval <= 0 {
panic("all wait params must be positive")
}
}
type prmContext struct {
defaultSession bool
verb session.ObjectVerb
cnr cid.ID
objSet bool
objs []oid.ID
}
func (x *prmContext) useDefaultSession() {
x.defaultSession = true
}
func (x *prmContext) useContainer(cnr cid.ID) {
x.cnr = cnr
}
func (x *prmContext) useObjects(ids []oid.ID) {
x.objs = ids
x.objSet = true
}
func (x *prmContext) useAddress(addr oid.Address) {
x.cnr = addr.Container()
x.objs = []oid.ID{addr.Object()}
x.objSet = true
}
func (x *prmContext) useVerb(verb session.ObjectVerb) {
x.verb = verb
}
type prmCommon struct {
key *ecdsa.PrivateKey
btoken *bearer.Token
stoken *session.Object
}
// UseKey specifies private key to sign the requests.
// If key is not provided, then Pool default key is used.
func (x *prmCommon) UseKey(key *ecdsa.PrivateKey) {
x.key = key
}
// UseBearer attaches bearer token to be used for the operation.
func (x *prmCommon) UseBearer(token bearer.Token) {
x.btoken = &token
}
// UseSession specifies session within which operation should be performed.
func (x *prmCommon) UseSession(token session.Object) {
x.stoken = &token
}
// PrmObjectPut groups parameters of PutObject operation.
type PrmObjectPut struct {
prmCommon
hdr object.Object
payload io.Reader
copiesNumber []uint32
}
// SetHeader specifies header of the object.
func (x *PrmObjectPut) SetHeader(hdr object.Object) {
x.hdr = hdr
}
// SetPayload specifies payload of the object.
func (x *PrmObjectPut) SetPayload(payload io.Reader) {
x.payload = payload
}
// SetCopiesNumber sets number of object copies that is enough to consider put successful.
// Zero means using default behavior.
func (x *PrmObjectPut) SetCopiesNumber(copiesNumber uint32) {
x.copiesNumber = []uint32{copiesNumber}
}
// SetCopiesNumberVector sets number of object copies that is enough to consider put successful, provided as array.
// Nil/empty vector means using default behavior.
func (x *PrmObjectPut) SetCopiesNumberVector(copiesNumber []uint32) {
x.copiesNumber = copiesNumber
}
// PrmObjectDelete groups parameters of DeleteObject operation.
type PrmObjectDelete struct {
prmCommon
addr oid.Address
}
// SetAddress specifies FrostFS address of the object.
func (x *PrmObjectDelete) SetAddress(addr oid.Address) {
x.addr = addr
}
// PrmObjectGet groups parameters of GetObject operation.
type PrmObjectGet struct {
prmCommon
addr oid.Address
}
// SetAddress specifies FrostFS address of the object.
func (x *PrmObjectGet) SetAddress(addr oid.Address) {
x.addr = addr
}
// PrmObjectHead groups parameters of HeadObject operation.
type PrmObjectHead struct {
prmCommon
addr oid.Address
raw bool
}
// SetAddress specifies FrostFS address of the object.
func (x *PrmObjectHead) SetAddress(addr oid.Address) {
x.addr = addr
}
// MarkRaw marks an intent to read physically stored object.
func (x *PrmObjectHead) MarkRaw() {
x.raw = true
}
// PrmObjectRange groups parameters of RangeObject operation.
type PrmObjectRange struct {
prmCommon
addr oid.Address
off, ln uint64
}
// SetAddress specifies FrostFS address of the object.
func (x *PrmObjectRange) SetAddress(addr oid.Address) {
x.addr = addr
}
// SetOffset sets offset of the payload range to be read.
func (x *PrmObjectRange) SetOffset(offset uint64) {
x.off = offset
}
// SetLength sets length of the payload range to be read.
func (x *PrmObjectRange) SetLength(length uint64) {
x.ln = length
}
// PrmObjectSearch groups parameters of SearchObjects operation.
type PrmObjectSearch struct {
prmCommon
cnrID cid.ID
filters object.SearchFilters
}
// SetContainerID specifies the container in which to look for objects.
func (x *PrmObjectSearch) SetContainerID(cnrID cid.ID) {
x.cnrID = cnrID
}
// SetFilters specifies filters by which to select objects.
func (x *PrmObjectSearch) SetFilters(filters object.SearchFilters) {
x.filters = filters
}
// PrmContainerPut groups parameters of PutContainer operation.
type PrmContainerPut struct {
prmClient sdkClient.PrmContainerPut
waitParams WaitParams
waitParamsSet bool
}
// SetContainer container structure to be used as a parameter of the base
// client's operation.
//
// See git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client.PrmContainerPut.SetContainer.
func (x *PrmContainerPut) SetContainer(cnr container.Container) {
x.prmClient.SetContainer(cnr)
}
// WithinSession specifies session to be used as a parameter of the base
// client's operation.
//
// See git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client.PrmContainerPut.WithinSession.
func (x *PrmContainerPut) WithinSession(s session.Container) {
x.prmClient.WithinSession(s)
}
// SetWaitParams specifies timeout params to complete operation.
// If not provided the default one will be used.
// Panics if any of the wait params isn't positive.
func (x *PrmContainerPut) SetWaitParams(waitParams WaitParams) {
waitParams.checkForPositive()
x.waitParams = waitParams
x.waitParamsSet = true
}
// PrmContainerGet groups parameters of GetContainer operation.
type PrmContainerGet struct {
cnrID cid.ID
}
// SetContainerID specifies identifier of the container to be read.
func (x *PrmContainerGet) SetContainerID(cnrID cid.ID) {
x.cnrID = cnrID
}
// PrmContainerList groups parameters of ListContainers operation.
type PrmContainerList struct {
ownerID user.ID
}
// SetOwnerID specifies identifier of the FrostFS account to list the containers.
func (x *PrmContainerList) SetOwnerID(ownerID user.ID) {
x.ownerID = ownerID
}
// PrmContainerDelete groups parameters of DeleteContainer operation.
type PrmContainerDelete struct {
cnrID cid.ID
stoken session.Container
stokenSet bool
waitParams WaitParams
waitParamsSet bool
}
// SetContainerID specifies identifier of the FrostFS container to be removed.
func (x *PrmContainerDelete) SetContainerID(cnrID cid.ID) {
x.cnrID = cnrID
}
// SetSessionToken specifies session within which operation should be performed.
func (x *PrmContainerDelete) SetSessionToken(token session.Container) {
x.stoken = token
x.stokenSet = true
}
// SetWaitParams specifies timeout params to complete operation.
// If not provided the default one will be used.
// Panics if any of the wait params isn't positive.
func (x *PrmContainerDelete) SetWaitParams(waitParams WaitParams) {
waitParams.checkForPositive()
x.waitParams = waitParams
x.waitParamsSet = true
}
// PrmContainerEACL groups parameters of GetEACL operation.
type PrmContainerEACL struct {
cnrID cid.ID
}
// SetContainerID specifies identifier of the FrostFS container to read the eACL table.
func (x *PrmContainerEACL) SetContainerID(cnrID cid.ID) {
x.cnrID = cnrID
}
// PrmContainerSetEACL groups parameters of SetEACL operation.
type PrmContainerSetEACL struct {
table eacl.Table
sessionSet bool
session session.Container
waitParams WaitParams
waitParamsSet bool
}
// SetTable sets structure of container's extended ACL to be used as a
// parameter of the base client's operation.
//
// See git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client.PrmContainerSetEACL.SetTable.
func (x *PrmContainerSetEACL) SetTable(table eacl.Table) {
x.table = table
}
// WithinSession specifies session to be used as a parameter of the base
// client's operation.
//
// See git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client.PrmContainerSetEACL.WithinSession.
func (x *PrmContainerSetEACL) WithinSession(s session.Container) {
x.session = s
x.sessionSet = true
}
// SetWaitParams specifies timeout params to complete operation.
// If not provided the default one will be used.
// Panics if any of the wait params isn't positive.
func (x *PrmContainerSetEACL) SetWaitParams(waitParams WaitParams) {
waitParams.checkForPositive()
x.waitParams = waitParams
x.waitParamsSet = true
}
// PrmBalanceGet groups parameters of Balance operation.
type PrmBalanceGet struct {
account user.ID
}
// SetAccount specifies identifier of the FrostFS account for which the balance is requested.
func (x *PrmBalanceGet) SetAccount(id user.ID) {
x.account = id
}
// prmEndpointInfo groups parameters of sessionCreate operation.
type prmCreateSession struct {
exp uint64
key ecdsa.PrivateKey
}
// setExp sets number of the last FrostFS epoch in the lifetime of the session after which it will be expired.
func (x *prmCreateSession) setExp(exp uint64) {
x.exp = exp
}
// useKey specifies owner private key for session token.
// If key is not provided, then Pool default key is used.
func (x *prmCreateSession) useKey(key ecdsa.PrivateKey) {
x.key = key
}
// prmEndpointInfo groups parameters of endpointInfo operation.
type prmEndpointInfo struct{}
// prmNetworkInfo groups parameters of networkInfo operation.
type prmNetworkInfo struct{}
// resCreateSession groups resulting values of sessionCreate operation.
type resCreateSession struct {
id []byte
sessionKey []byte
}
// Pool represents virtual connection to the FrostFS network to communicate
// with multiple FrostFS servers without thinking about switching between servers
// due to load balancing proportions or their unavailability.
// It is designed to provide a convenient abstraction from the multiple sdkClient.client types.
//
// Pool can be created and initialized using NewPool function.
// Before executing the FrostFS operations using the Pool, connection to the
// servers MUST BE correctly established (see Dial method).
// Using the Pool before connecting have been established can lead to a panic.
// After the work, the Pool SHOULD BE closed (see Close method): it frees internal
// and system resources which were allocated for the period of work of the Pool.
// Calling Dial/Close methods during the communication process step strongly discouraged
// as it leads to undefined behavior.
//
// Each method which produces a FrostFS API call may return an error.
// Status of underlying server response is casted to built-in error instance.
// Certain statuses can be checked using `sdkClient` and standard `errors` packages.
// Note that package provides some helper functions to work with status returns
// (e.g. sdkClient.IsErrContainerNotFound, sdkClient.IsErrObjectNotFound).
//
// See pool package overview to get some examples.
type Pool struct {
innerPools []*innerPool
key *ecdsa.PrivateKey
cancel context.CancelFunc
closedCh chan struct{}
cache *sessionCache
stokenDuration uint64
rebalanceParams rebalanceParameters
clientBuilder clientBuilder
logger *zap.Logger
}
type innerPool struct {
lock sync.RWMutex
sampler *sampler
clients []client
}
const (
defaultSessionTokenExpirationDuration = 100 // in blocks
defaultErrorThreshold = 100
defaultRebalanceInterval = 15 * time.Second
defaultHealthcheckTimeout = 4 * time.Second
defaultDialTimeout = 5 * time.Second
defaultStreamTimeout = 10 * time.Second
)
// NewPool creates connection pool using parameters.
func NewPool(options InitParameters) (*Pool, error) {
if options.key == nil {
return nil, fmt.Errorf("missed required parameter 'Key'")
}
nodesParams, err := adjustNodeParams(options.nodeParams)
if err != nil {
return nil, err
}
cache, err := newCache()
if err != nil {
return nil, fmt.Errorf("couldn't create cache: %w", err)
}
fillDefaultInitParams(&options, cache)
pool := &Pool{
key: options.key,
cache: cache,
logger: options.logger,
stokenDuration: options.sessionExpirationDuration,
rebalanceParams: rebalanceParameters{
nodesParams: nodesParams,
nodeRequestTimeout: options.healthcheckTimeout,
clientRebalanceInterval: options.clientRebalanceInterval,
sessionExpirationDuration: options.sessionExpirationDuration,
},
clientBuilder: options.clientBuilder,
}
return pool, nil
}
// Dial establishes a connection to the servers from the FrostFS network.
// It also starts a routine that checks the health of the nodes and
// updates the weights of the nodes for balancing.
// Returns an error describing failure reason.
//
// If failed, the Pool SHOULD NOT be used.
//
// See also InitParameters.SetClientRebalanceInterval.
func (p *Pool) Dial(ctx context.Context) error {
inner := make([]*innerPool, len(p.rebalanceParams.nodesParams))
var atLeastOneHealthy bool
for i, params := range p.rebalanceParams.nodesParams {
clients := make([]client, len(params.weights))
for j, addr := range params.addresses {
clients[j] = p.clientBuilder(addr)
if err := clients[j].dial(ctx); err != nil {
p.log(zap.WarnLevel, "failed to build client", zap.String("address", addr), zap.Error(err))
continue
}
var st session.Object
err := initSessionForDuration(ctx, &st, clients[j], p.rebalanceParams.sessionExpirationDuration, *p.key)
if err != nil {
clients[j].setUnhealthy()
p.log(zap.WarnLevel, "failed to create frostfs session token for client",
zap.String("address", addr), zap.Error(err))
continue
}
_ = p.cache.Put(formCacheKey(addr, p.key), st)
atLeastOneHealthy = true
}
source := rand.NewSource(time.Now().UnixNano())
sampl := newSampler(params.weights, source)
inner[i] = &innerPool{
sampler: sampl,
clients: clients,
}
}
if !atLeastOneHealthy {
return fmt.Errorf("at least one node must be healthy")
}
ctx, cancel := context.WithCancel(ctx)
p.cancel = cancel
p.closedCh = make(chan struct{})
p.innerPools = inner
go p.startRebalance(ctx)
return nil
}
func (p *Pool) log(level zapcore.Level, msg string, fields ...zap.Field) {
if p.logger == nil {
return
}
p.logger.Log(level, msg, fields...)
}
func fillDefaultInitParams(params *InitParameters, cache *sessionCache) {
if params.sessionExpirationDuration == 0 {
params.sessionExpirationDuration = defaultSessionTokenExpirationDuration
}
if params.errorThreshold == 0 {
params.errorThreshold = defaultErrorThreshold
}
if params.clientRebalanceInterval <= 0 {
params.clientRebalanceInterval = defaultRebalanceInterval
}
if params.healthcheckTimeout <= 0 {
params.healthcheckTimeout = defaultHealthcheckTimeout
}
if params.nodeDialTimeout <= 0 {
params.nodeDialTimeout = defaultDialTimeout
}
if params.nodeStreamTimeout <= 0 {
params.nodeStreamTimeout = defaultStreamTimeout
}
if params.isMissingClientBuilder() {
params.setClientBuilder(func(addr string) client {
var prm wrapperPrm
prm.setAddress(addr)
prm.setKey(*params.key)
prm.setDialTimeout(params.nodeDialTimeout)
prm.setStreamTimeout(params.nodeStreamTimeout)
prm.setErrorThreshold(params.errorThreshold)
prm.setPoolRequestCallback(params.requestCallback)
prm.setGRPCDialOptions(params.dialOptions)
prm.setResponseInfoCallback(func(info sdkClient.ResponseMetaInfo) error {
cache.updateEpoch(info.Epoch())
return nil
})
return newWrapper(prm)
})
}
}
func adjustNodeParams(nodeParams []NodeParam) ([]*nodesParam, error) {
if len(nodeParams) == 0 {
return nil, errors.New("no FrostFS peers configured")
}
nodesParamsMap := make(map[int]*nodesParam)
for _, param := range nodeParams {
nodes, ok := nodesParamsMap[param.priority]
if !ok {
nodes = &nodesParam{priority: param.priority}
}
nodes.addresses = append(nodes.addresses, param.address)
nodes.weights = append(nodes.weights, param.weight)
nodesParamsMap[param.priority] = nodes
}
nodesParams := make([]*nodesParam, 0, len(nodesParamsMap))
for _, nodes := range nodesParamsMap {
nodes.weights = adjustWeights(nodes.weights)
nodesParams = append(nodesParams, nodes)
}
sort.Slice(nodesParams, func(i, j int) bool {
return nodesParams[i].priority < nodesParams[j].priority
})
return nodesParams, nil
}
// startRebalance runs loop to monitor connection healthy status.
func (p *Pool) startRebalance(ctx context.Context) {
ticker := time.NewTimer(p.rebalanceParams.clientRebalanceInterval)
buffers := make([][]float64, len(p.rebalanceParams.nodesParams))
for i, params := range p.rebalanceParams.nodesParams {
buffers[i] = make([]float64, len(params.weights))
}
for {
select {
case <-ctx.Done():
close(p.closedCh)
return
case <-ticker.C:
p.updateNodesHealth(ctx, buffers)
ticker.Reset(p.rebalanceParams.clientRebalanceInterval)
}
}
}
func (p *Pool) updateNodesHealth(ctx context.Context, buffers [][]float64) {
wg := sync.WaitGroup{}
for i, inner := range p.innerPools {
wg.Add(1)
bufferWeights := buffers[i]
go func(i int, innerPool *innerPool) {
defer wg.Done()
p.updateInnerNodesHealth(ctx, i, bufferWeights)
}(i, inner)
}
wg.Wait()
}
func (p *Pool) updateInnerNodesHealth(ctx context.Context, i int, bufferWeights []float64) {
if i > len(p.innerPools)-1 {
return
}
pool := p.innerPools[i]
options := p.rebalanceParams
healthyChanged := new(atomic.Bool)
wg := sync.WaitGroup{}
for j, cli := range pool.clients {
wg.Add(1)
go func(j int, cli client) {
defer wg.Done()
tctx, c := context.WithTimeout(ctx, options.nodeRequestTimeout)
defer c()
healthy, changed := cli.restartIfUnhealthy(tctx)
if healthy {
bufferWeights[j] = options.nodesParams[i].weights[j]
} else {
bufferWeights[j] = 0
p.cache.DeleteByPrefix(cli.address())
}
if changed {
p.log(zap.DebugLevel, "health has changed",
zap.String("address", cli.address()), zap.Bool("healthy", healthy))
healthyChanged.Store(true)
}
}(j, cli)
}
wg.Wait()
if healthyChanged.Load() {
probabilities := adjustWeights(bufferWeights)
source := rand.NewSource(time.Now().UnixNano())
pool.lock.Lock()
pool.sampler = newSampler(probabilities, source)
pool.lock.Unlock()
}
}
func adjustWeights(weights []float64) []float64 {
adjusted := make([]float64, len(weights))
sum := 0.0
for _, weight := range weights {
sum += weight
}
if sum > 0 {
for i, weight := range weights {
adjusted[i] = weight / sum
}
}
return adjusted
}
func (p *Pool) connection() (client, error) {
for _, inner := range p.innerPools {
cp, err := inner.connection()
if err == nil {
return cp, nil
}
}
return nil, errors.New("no healthy client")
}
func (p *innerPool) connection() (client, error) {
p.lock.RLock() // need lock because of using p.sampler
defer p.lock.RUnlock()
if len(p.clients) == 1 {
cp := p.clients[0]
if cp.isHealthy() {
return cp, nil
}
return nil, errors.New("no healthy client")
}
attempts := 3 * len(p.clients)
for k := 0; k < attempts; k++ {
i := p.sampler.Next()
if cp := p.clients[i]; cp.isHealthy() {
return cp, nil
}
}
return nil, errors.New("no healthy client")
}
func formCacheKey(address string, key *ecdsa.PrivateKey) string {
k := keys.PrivateKey{PrivateKey: *key}
return address + k.String()
}
func (p *Pool) checkSessionTokenErr(err error, address string) bool {
if err == nil {
return false
}
if sdkClient.IsErrSessionNotFound(err) || sdkClient.IsErrSessionExpired(err) {
p.cache.DeleteByPrefix(address)
return true
}
return false
}
func initSessionForDuration(ctx context.Context, dst *session.Object, c client, dur uint64, ownerKey ecdsa.PrivateKey) error {
ni, err := c.networkInfo(ctx, prmNetworkInfo{})
if err != nil {
return err
}
epoch := ni.CurrentEpoch()
var exp uint64
if math.MaxUint64-epoch < dur {
exp = math.MaxUint64
} else {
exp = epoch + dur
}
var prm prmCreateSession
prm.setExp(exp)
prm.useKey(ownerKey)
res, err := c.sessionCreate(ctx, prm)
if err != nil {
return err
}
var id uuid.UUID
err = id.UnmarshalBinary(res.id)
if err != nil {
return fmt.Errorf("invalid session token ID: %w", err)
}
var key frostfsecdsa.PublicKey
err = key.Decode(res.sessionKey)
if err != nil {
return fmt.Errorf("invalid public session key: %w", err)
}
dst.SetID(id)
dst.SetAuthKey(&key)
dst.SetExp(exp)
return nil
}
type callContext struct {
client client
// client endpoint
endpoint string
// request signer
key *ecdsa.PrivateKey
// flag to open default session if session token is missing
sessionDefault bool
sessionTarget func(session.Object)
sessionVerb session.ObjectVerb
sessionCnr cid.ID
sessionObjSet bool
sessionObjs []oid.ID
}
func (p *Pool) initCallContext(ctx *callContext, cfg prmCommon, prmCtx prmContext) error {
cp, err := p.connection()
if err != nil {
return err
}
ctx.key = cfg.key
if ctx.key == nil {
// use pool key if caller didn't specify its own
ctx.key = p.key
}
ctx.endpoint = cp.address()
ctx.client = cp
if ctx.sessionTarget != nil && cfg.stoken != nil {
ctx.sessionTarget(*cfg.stoken)
}
// note that we don't override session provided by the caller
ctx.sessionDefault = cfg.stoken == nil && prmCtx.defaultSession
if ctx.sessionDefault {
ctx.sessionVerb = prmCtx.verb
ctx.sessionCnr = prmCtx.cnr
ctx.sessionObjSet = prmCtx.objSet
ctx.sessionObjs = prmCtx.objs
}
return err
}
// opens new session or uses cached one.
// Must be called only on initialized callContext with set sessionTarget.
func (p *Pool) openDefaultSession(ctx context.Context, cc *callContext) error {
cacheKey := formCacheKey(cc.endpoint, cc.key)
tok, ok := p.cache.Get(cacheKey)
if !ok {
// init new session
err := initSessionForDuration(ctx, &tok, cc.client, p.stokenDuration, *cc.key)
if err != nil {
return fmt.Errorf("session API client: %w", err)
}
// cache the opened session
p.cache.Put(cacheKey, tok)
}
tok.ForVerb(cc.sessionVerb)
tok.BindContainer(cc.sessionCnr)
if cc.sessionObjSet {
tok.LimitByObjects(cc.sessionObjs...)
}
// sign the token
if err := tok.Sign(*cc.key); err != nil {
return fmt.Errorf("sign token of the opened session: %w", err)
}
cc.sessionTarget(tok)
return nil
}
// opens default session (if sessionDefault is set), and calls f. If f returns
// session-related error then cached token is removed.
func (p *Pool) call(ctx context.Context, cc *callContext, f func() error) error {
var err error
if cc.sessionDefault {
err = p.openDefaultSession(ctx, cc)
if err != nil {
return fmt.Errorf("open default session: %w", err)
}
}
err = f()
_ = p.checkSessionTokenErr(err, cc.endpoint)
return err
}
// fillAppropriateKey use pool key if caller didn't specify its own.
func (p *Pool) fillAppropriateKey(prm *prmCommon) {
if prm.key == nil {
prm.key = p.key
}
}
// PutObject writes an object through a remote server using FrostFS API protocol.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) PutObject(ctx context.Context, prm PrmObjectPut) (oid.ID, error) {
cnr, _ := prm.hdr.ContainerID()
var prmCtx prmContext
prmCtx.useDefaultSession()
prmCtx.useVerb(session.VerbObjectPut)
prmCtx.useContainer(cnr)
p.fillAppropriateKey(&prm.prmCommon)
var ctxCall callContext
if err := p.initCallContext(&ctxCall, prm.prmCommon, prmCtx); err != nil {
return oid.ID{}, fmt.Errorf("init call context: %w", err)
}
if ctxCall.sessionDefault {
ctxCall.sessionTarget = prm.UseSession
if err := p.openDefaultSession(ctx, &ctxCall); err != nil {
return oid.ID{}, fmt.Errorf("open default session: %w", err)
}
}
id, err := ctxCall.client.objectPut(ctx, prm)
if err != nil {
// removes session token from cache in case of token error
p.checkSessionTokenErr(err, ctxCall.endpoint)
return id, fmt.Errorf("init writing on API client: %w", err)
}
return id, nil
}
// DeleteObject 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.
func (p *Pool) DeleteObject(ctx context.Context, prm PrmObjectDelete) error {
var prmCtx prmContext
prmCtx.useDefaultSession()
prmCtx.useVerb(session.VerbObjectDelete)
prmCtx.useAddress(prm.addr)
if prm.stoken == nil { // collect phy objects only if we are about to open default session
var tokens relations.Tokens
tokens.Bearer = prm.btoken
relatives, err := relations.ListAllRelations(ctx, p, prm.addr.Container(), prm.addr.Object(), tokens)
if err != nil {
return fmt.Errorf("failed to collect relatives: %w", err)
}
if len(relatives) != 0 {
prmCtx.useContainer(prm.addr.Container())
prmCtx.useObjects(append(relatives, prm.addr.Object()))
}
}
p.fillAppropriateKey(&prm.prmCommon)
var cc callContext
cc.sessionTarget = prm.UseSession
err := p.initCallContext(&cc, prm.prmCommon, prmCtx)
if err != nil {
return err
}
return p.call(ctx, &cc, func() error {
if err = cc.client.objectDelete(ctx, prm); err != nil {
return fmt.Errorf("remove object via client: %w", err)
}
return nil
})
}
type objectReadCloser struct {
reader *sdkClient.ObjectReader
elapsedTimeCallback func(time.Duration)
}
// Read implements io.Reader of the object payload.
func (x *objectReadCloser) Read(p []byte) (int, error) {
start := time.Now()
n, err := x.reader.Read(p)
x.elapsedTimeCallback(time.Since(start))
return n, err
}
// Close implements io.Closer of the object payload.
func (x *objectReadCloser) Close() error {
_, err := x.reader.Close()
return err
}
// ResGetObject is designed to provide object header nad read one object payload from FrostFS system.
type ResGetObject struct {
Header object.Object
Payload io.ReadCloser
}
// GetObject reads object header and initiates reading an object payload through a remote server using FrostFS API protocol.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) GetObject(ctx context.Context, prm PrmObjectGet) (ResGetObject, error) {
p.fillAppropriateKey(&prm.prmCommon)
var cc callContext
cc.sessionTarget = prm.UseSession
var res ResGetObject
err := p.initCallContext(&cc, prm.prmCommon, prmContext{})
if err != nil {
return res, err
}
return res, p.call(ctx, &cc, func() error {
res, err = cc.client.objectGet(ctx, prm)
return err
})
}
// HeadObject reads object header through a remote server using FrostFS API protocol.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) HeadObject(ctx context.Context, prm PrmObjectHead) (object.Object, error) {
p.fillAppropriateKey(&prm.prmCommon)
var cc callContext
cc.sessionTarget = prm.UseSession
var obj object.Object
err := p.initCallContext(&cc, prm.prmCommon, prmContext{})
if err != nil {
return obj, err
}
return obj, p.call(ctx, &cc, func() error {
obj, err = cc.client.objectHead(ctx, prm)
return err
})
}
// ResObjectRange is designed to read payload range of one object
// from FrostFS system.
//
// Must be initialized using Pool.ObjectRange, any other
// usage is unsafe.
type ResObjectRange struct {
payload *sdkClient.ObjectRangeReader
elapsedTimeCallback func(time.Duration)
}
// Read implements io.Reader of the object payload.
func (x *ResObjectRange) Read(p []byte) (int, error) {
start := time.Now()
n, err := x.payload.Read(p)
x.elapsedTimeCallback(time.Since(start))
return n, err
}
// Close ends reading the payload range and returns the result of the operation
// along with the final results. Must be called after using the ResObjectRange.
func (x *ResObjectRange) Close() error {
_, err := x.payload.Close()
return err
}
// ObjectRange initiates reading an object's payload range through a remote
// server using FrostFS API protocol.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) ObjectRange(ctx context.Context, prm PrmObjectRange) (ResObjectRange, error) {
p.fillAppropriateKey(&prm.prmCommon)
var cc callContext
cc.sessionTarget = prm.UseSession
var res ResObjectRange
err := p.initCallContext(&cc, prm.prmCommon, prmContext{})
if err != nil {
return res, err
}
return res, p.call(ctx, &cc, func() error {
res, err = cc.client.objectRange(ctx, prm)
return err
})
}
// ResObjectSearch is designed to read list of object identifiers from FrostFS system.
//
// Must be initialized using Pool.SearchObjects, any other usage is unsafe.
type ResObjectSearch struct {
r *sdkClient.ObjectListReader
}
// Read reads another list of the object identifiers.
func (x *ResObjectSearch) Read(buf []oid.ID) (int, error) {
n, ok := x.r.Read(buf)
if !ok {
_, err := x.r.Close()
if err == nil {
return n, io.EOF
}
return n, err
}
return n, nil
}
// Iterate iterates over the list of found object identifiers.
// f can return true to stop iteration earlier.
//
// Returns an error if object can't be read.
func (x *ResObjectSearch) Iterate(f func(oid.ID) bool) error {
return x.r.Iterate(f)
}
// Close ends reading list of the matched objects and returns the result of the operation
// along with the final results. Must be called after using the ResObjectSearch.
func (x *ResObjectSearch) Close() {
_, _ = x.r.Close()
}
// SearchObjects initiates object selection through a remote server using FrostFS API protocol.
//
// The call only opens the transmission channel, explicit fetching of matched objects
// is done using the ResObjectSearch. Resulting reader must be finally closed.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) SearchObjects(ctx context.Context, prm PrmObjectSearch) (ResObjectSearch, error) {
p.fillAppropriateKey(&prm.prmCommon)
var cc callContext
cc.sessionTarget = prm.UseSession
var res ResObjectSearch
err := p.initCallContext(&cc, prm.prmCommon, prmContext{})
if err != nil {
return res, err
}
return res, p.call(ctx, &cc, func() error {
res, err = cc.client.objectSearch(ctx, prm)
return err
})
}
// PutContainer sends request to save container in FrostFS and waits for the operation to complete.
//
// Waiting parameters can be specified using SetWaitParams. If not called, defaults are used:
//
// polling interval: 5s
// waiting timeout: 120s
//
// Success can be verified by reading by identifier (see GetContainer).
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) PutContainer(ctx context.Context, prm PrmContainerPut) (cid.ID, error) {
cp, err := p.connection()
if err != nil {
return cid.ID{}, err
}
return cp.containerPut(ctx, prm)
}
// GetContainer reads FrostFS container by ID.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) GetContainer(ctx context.Context, prm PrmContainerGet) (container.Container, error) {
cp, err := p.connection()
if err != nil {
return container.Container{}, err
}
return cp.containerGet(ctx, prm)
}
// ListContainers requests identifiers of the account-owned containers.
func (p *Pool) ListContainers(ctx context.Context, prm PrmContainerList) ([]cid.ID, error) {
cp, err := p.connection()
if err != nil {
return nil, err
}
return cp.containerList(ctx, prm)
}
// DeleteContainer sends request to remove the FrostFS container and waits for the operation to complete.
//
// Waiting parameters can be specified using SetWaitParams. If not called, defaults are used:
//
// polling interval: 5s
// waiting timeout: 120s
//
// Success can be verified by reading by identifier (see GetContainer).
func (p *Pool) DeleteContainer(ctx context.Context, prm PrmContainerDelete) error {
cp, err := p.connection()
if err != nil {
return err
}
return cp.containerDelete(ctx, prm)
}
// GetEACL reads eACL table of the FrostFS container.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) GetEACL(ctx context.Context, prm PrmContainerEACL) (eacl.Table, error) {
cp, err := p.connection()
if err != nil {
return eacl.Table{}, err
}
return cp.containerEACL(ctx, prm)
}
// SetEACL sends request to update eACL table of the FrostFS container and waits for the operation to complete.
//
// Waiting parameters can be specified using SetWaitParams. If not called, defaults are used:
//
// polling interval: 5s
// waiting timeout: 120s
//
// Success can be verified by reading by identifier (see GetEACL).
func (p *Pool) SetEACL(ctx context.Context, prm PrmContainerSetEACL) error {
cp, err := p.connection()
if err != nil {
return err
}
return cp.containerSetEACL(ctx, prm)
}
// Balance requests current balance of the FrostFS account.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) Balance(ctx context.Context, prm PrmBalanceGet) (accounting.Decimal, error) {
cp, err := p.connection()
if err != nil {
return accounting.Decimal{}, err
}
return cp.balanceGet(ctx, prm)
}
// Statistic returns connection statistics.
func (p Pool) Statistic() Statistic {
stat := Statistic{}
for _, inner := range p.innerPools {
inner.lock.RLock()
for _, cl := range inner.clients {
node := NodeStatistic{
address: cl.address(),
methods: cl.methodsStatus(),
overallErrors: cl.overallErrorRate(),
currentErrors: cl.currentErrorRate(),
}
stat.nodes = append(stat.nodes, node)
stat.overallErrors += node.overallErrors
}
inner.lock.RUnlock()
}
return stat
}
// waitForContainerPresence waits until the container is found on the FrostFS network.
func waitForContainerPresence(ctx context.Context, cli client, cnrID cid.ID, waitParams *WaitParams) error {
var prm PrmContainerGet
prm.SetContainerID(cnrID)
return waitFor(ctx, waitParams, func(ctx context.Context) bool {
_, err := cli.containerGet(ctx, prm)
return err == nil
})
}
// waitForEACLPresence waits until the container eacl is applied on the FrostFS network.
func waitForEACLPresence(ctx context.Context, cli client, cnrID *cid.ID, table *eacl.Table, waitParams *WaitParams) error {
var prm PrmContainerEACL
if cnrID != nil {
prm.SetContainerID(*cnrID)
}
return waitFor(ctx, waitParams, func(ctx context.Context) bool {
eaclTable, err := cli.containerEACL(ctx, prm)
if err == nil {
return eacl.EqualTables(*table, eaclTable)
}
return false
})
}
// waitForContainerRemoved waits until the container is removed from the FrostFS network.
func waitForContainerRemoved(ctx context.Context, cli client, cnrID *cid.ID, waitParams *WaitParams) error {
var prm PrmContainerGet
if cnrID != nil {
prm.SetContainerID(*cnrID)
}
return waitFor(ctx, waitParams, func(ctx context.Context) bool {
_, err := cli.containerGet(ctx, prm)
return sdkClient.IsErrContainerNotFound(err)
})
}
// waitFor await that given condition will be met in waitParams time.
func waitFor(ctx context.Context, params *WaitParams, condition func(context.Context) bool) error {
wctx, cancel := context.WithTimeout(ctx, params.timeout)
defer cancel()
ticker := time.NewTimer(params.pollInterval)
defer ticker.Stop()
wdone := wctx.Done()
done := ctx.Done()
for {
select {
case <-done:
return ctx.Err()
case <-wdone:
return wctx.Err()
case <-ticker.C:
if condition(ctx) {
return nil
}
ticker.Reset(params.pollInterval)
}
}
}
// NetworkInfo requests information about the FrostFS network of which the remote server is a part.
//
// Main return value MUST NOT be processed on an erroneous return.
func (p *Pool) NetworkInfo(ctx context.Context) (netmap.NetworkInfo, error) {
cp, err := p.connection()
if err != nil {
return netmap.NetworkInfo{}, err
}
return cp.networkInfo(ctx, prmNetworkInfo{})
}
// Close closes the Pool and releases all the associated resources.
func (p *Pool) Close() {
p.cancel()
<-p.closedCh
}
// SyncContainerWithNetwork applies network configuration received via
// the Pool to the container. Changes the container if it does not satisfy
// network configuration.
//
// Pool and container MUST not be nil.
//
// Returns any error that does not allow reading configuration
// from the network.
func SyncContainerWithNetwork(ctx context.Context, cnr *container.Container, p *Pool) error {
ni, err := p.NetworkInfo(ctx)
if err != nil {
return fmt.Errorf("network info: %w", err)
}
container.ApplyNetworkConfig(cnr, ni)
return nil
}
// GetSplitInfo implements relations.Relations.
func (p *Pool) GetSplitInfo(ctx context.Context, cnrID cid.ID, objID oid.ID, tokens relations.Tokens) (*object.SplitInfo, error) {
var addr oid.Address
addr.SetContainer(cnrID)
addr.SetObject(objID)
var prm PrmObjectHead
prm.SetAddress(addr)
if tokens.Bearer != nil {
prm.UseBearer(*tokens.Bearer)
}
if tokens.Session != nil {
prm.UseSession(*tokens.Session)
}
prm.MarkRaw()
_, err := p.HeadObject(ctx, prm)
var errSplit *object.SplitInfoError
switch {
case errors.As(err, &errSplit):
return errSplit.SplitInfo(), nil
case err == nil:
return nil, relations.ErrNoSplitInfo
default:
return nil, fmt.Errorf("failed to get raw object header: %w", err)
}
}
// ListChildrenByLinker implements relations.Relations.
func (p *Pool) ListChildrenByLinker(ctx context.Context, cnrID cid.ID, objID oid.ID, tokens relations.Tokens) ([]oid.ID, error) {
var addr oid.Address
addr.SetContainer(cnrID)
addr.SetObject(objID)
var prm PrmObjectHead
prm.SetAddress(addr)
if tokens.Bearer != nil {
prm.UseBearer(*tokens.Bearer)
}
if tokens.Session != nil {
prm.UseSession(*tokens.Session)
}
res, err := p.HeadObject(ctx, prm)
if err != nil {
return nil, fmt.Errorf("failed to get linking object's header: %w", err)
}
return res.Children(), nil
}
// GetLeftSibling implements relations.Relations.
func (p *Pool) GetLeftSibling(ctx context.Context, cnrID cid.ID, objID oid.ID, tokens relations.Tokens) (oid.ID, error) {
var addr oid.Address
addr.SetContainer(cnrID)
addr.SetObject(objID)
var prm PrmObjectHead
prm.SetAddress(addr)
if tokens.Bearer != nil {
prm.UseBearer(*tokens.Bearer)
}
if tokens.Session != nil {
prm.UseSession(*tokens.Session)
}
res, err := p.HeadObject(ctx, prm)
if err != nil {
return oid.ID{}, fmt.Errorf("failed to read split chain member's header: %w", err)
}
idMember, ok := res.PreviousID()
if !ok {
return oid.ID{}, relations.ErrNoLeftSibling
}
return idMember, nil
}
// FindSiblingBySplitID implements relations.Relations.
func (p *Pool) FindSiblingBySplitID(ctx context.Context, cnrID cid.ID, splitID *object.SplitID, tokens relations.Tokens) ([]oid.ID, error) {
var query object.SearchFilters
query.AddSplitIDFilter(object.MatchStringEqual, splitID)
var prm PrmObjectSearch
prm.SetContainerID(cnrID)
prm.SetFilters(query)
if tokens.Bearer != nil {
prm.UseBearer(*tokens.Bearer)
}
if tokens.Session != nil {
prm.UseSession(*tokens.Session)
}
res, err := p.SearchObjects(ctx, prm)
if err != nil {
return nil, fmt.Errorf("failed to search objects by split ID: %w", err)
}
var members []oid.ID
err = res.Iterate(func(id oid.ID) bool {
members = append(members, id)
return false
})
if err != nil {
return nil, fmt.Errorf("failed to iterate found objects: %w", err)
}
return members, nil
}
// FindSiblingByParentID implements relations.Relations.
func (p *Pool) FindSiblingByParentID(ctx context.Context, cnrID cid.ID, objID oid.ID, tokens relations.Tokens) ([]oid.ID, error) {
var query object.SearchFilters
query.AddParentIDFilter(object.MatchStringEqual, objID)
var prm PrmObjectSearch
prm.SetContainerID(cnrID)
prm.SetFilters(query)
if tokens.Bearer != nil {
prm.UseBearer(*tokens.Bearer)
}
if tokens.Session != nil {
prm.UseSession(*tokens.Session)
}
resSearch, err := p.SearchObjects(ctx, prm)
if err != nil {
return nil, fmt.Errorf("failed to find object children: %w", err)
}
var res []oid.ID
err = resSearch.Iterate(func(id oid.ID) bool {
res = append(res, id)
return false
})
if err != nil {
return nil, fmt.Errorf("failed to iterate found objects: %w", err)
}
return res, nil
}