frostfs-sdk-go/pool/pool.go
Leonard Lyubich 69ffface78 [#131] client: Name all methods and types the same way
Inherit name format of object operations in all other ones.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
2022-02-18 17:01:08 +03:00

1300 lines
31 KiB
Go

package pool
import (
"bytes"
"context"
"crypto/ecdsa"
"errors"
"fmt"
"io"
"math"
"math/rand"
"sort"
"strings"
"sync"
"time"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neofs-sdk-go/accounting"
"github.com/nspcc-dev/neofs-sdk-go/client"
"github.com/nspcc-dev/neofs-sdk-go/container"
cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
"github.com/nspcc-dev/neofs-sdk-go/eacl"
"github.com/nspcc-dev/neofs-sdk-go/object"
"github.com/nspcc-dev/neofs-sdk-go/object/address"
oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
"github.com/nspcc-dev/neofs-sdk-go/owner"
"github.com/nspcc-dev/neofs-sdk-go/session"
"github.com/nspcc-dev/neofs-sdk-go/token"
"go.uber.org/zap"
)
// Client is a wrapper for client.Client to generate mock.
type Client interface {
BalanceGet(context.Context, client.PrmBalanceGet) (*client.ResBalanceGet, error)
ContainerPut(context.Context, client.PrmContainerPut) (*client.ResContainerPut, error)
ContainerGet(context.Context, client.PrmContainerGet) (*client.ResContainerGet, error)
ContainerList(context.Context, client.PrmContainerList) (*client.ResContainerList, error)
ContainerDelete(context.Context, client.PrmContainerDelete) (*client.ResContainerDelete, error)
ContainerEACL(context.Context, client.PrmContainerEACL) (*client.ResContainerEACL, error)
ContainerSetEACL(context.Context, client.PrmContainerSetEACL) (*client.ResContainerSetEACL, error)
EndpointInfo(context.Context, client.PrmEndpointInfo) (*client.ResEndpointInfo, error)
NetworkInfo(context.Context, client.PrmNetworkInfo) (*client.ResNetworkInfo, error)
ObjectPutInit(context.Context, client.PrmObjectPutInit) (*client.ObjectWriter, error)
ObjectDelete(context.Context, client.PrmObjectDelete) (*client.ResObjectDelete, error)
ObjectGetInit(context.Context, client.PrmObjectGet) (*client.ObjectReader, error)
ObjectHead(context.Context, client.PrmObjectHead) (*client.ResObjectHead, error)
ObjectRangeInit(context.Context, client.PrmObjectRange) (*client.ObjectRangeReader, error)
ObjectSearchInit(context.Context, client.PrmObjectSearch) (*client.ObjectListReader, error)
SessionCreate(context.Context, client.PrmSessionCreate) (*client.ResSessionCreate, error)
}
// BuilderOptions contains options used to build connection pool.
type BuilderOptions struct {
Key *ecdsa.PrivateKey
Logger *zap.Logger
NodeConnectionTimeout time.Duration
NodeRequestTimeout time.Duration
ClientRebalanceInterval time.Duration
SessionTokenThreshold time.Duration
SessionExpirationDuration uint64
nodesParams []*NodesParam
clientBuilder func(opts ...client.Option) (Client, error)
}
type NodesParam struct {
priority int
addresses []string
weights []float64
}
type NodeParam struct {
priority int
address string
weight float64
}
// Builder is an interim structure used to collect node addresses/weights and
// build connection pool subsequently.
type Builder struct {
nodeParams []NodeParam
}
// ContainerPollingParams contains parameters used in polling is a container created or not.
type ContainerPollingParams struct {
CreationTimeout time.Duration
PollInterval time.Duration
}
// DefaultPollingParams creates ContainerPollingParams with default values.
func DefaultPollingParams() *ContainerPollingParams {
return &ContainerPollingParams{
CreationTimeout: 120 * time.Second,
PollInterval: 5 * time.Second,
}
}
// AddNode adds address/weight pair to node PoolBuilder list.
func (pb *Builder) AddNode(address string, priority int, weight float64) *Builder {
pb.nodeParams = append(pb.nodeParams, NodeParam{
address: address,
priority: priority,
weight: weight,
})
return pb
}
// Build creates new pool based on current PoolBuilder state and options.
func (pb *Builder) Build(ctx context.Context, options *BuilderOptions) (Pool, error) {
if len(pb.nodeParams) == 0 {
return nil, errors.New("no NeoFS peers configured")
}
nodesParams := make(map[int]*NodesParam)
for _, param := range pb.nodeParams {
nodes, ok := nodesParams[param.priority]
if !ok {
nodes = &NodesParam{priority: param.priority}
}
nodes.addresses = append(nodes.addresses, param.address)
nodes.weights = append(nodes.weights, param.weight)
nodesParams[param.priority] = nodes
}
for _, nodes := range nodesParams {
nodes.weights = adjustWeights(nodes.weights)
options.nodesParams = append(options.nodesParams, nodes)
}
sort.Slice(options.nodesParams, func(i, j int) bool {
return options.nodesParams[i].priority < options.nodesParams[j].priority
})
if options.clientBuilder == nil {
options.clientBuilder = func(opts ...client.Option) (Client, error) {
return client.New(opts...)
}
}
return newPool(ctx, options)
}
// Pool is an interface providing connection artifacts on request.
type Pool interface {
Object
Container
Accounting
Connection() (Client, *session.Token, error)
OwnerID() *owner.ID
WaitForContainerPresence(context.Context, *cid.ID, *ContainerPollingParams) error
Close()
}
type Object interface {
PutObject(ctx context.Context, hdr object.Object, payload io.Reader, opts ...CallOption) (*oid.ID, error)
DeleteObject(ctx context.Context, addr address.Address, opts ...CallOption) error
GetObject(context.Context, address.Address, ...CallOption) (*ResGetObject, error)
HeadObject(context.Context, address.Address, ...CallOption) (*object.Object, error)
ObjectRange(ctx context.Context, addr address.Address, off, ln uint64, opts ...CallOption) (*ResObjectRange, error)
SearchObjects(context.Context, cid.ID, object.SearchFilters, ...CallOption) (*ResObjectSearch, error)
}
type Container interface {
PutContainer(ctx context.Context, cnr *container.Container, opts ...CallOption) (*cid.ID, error)
GetContainer(ctx context.Context, cid *cid.ID, opts ...CallOption) (*container.Container, error)
ListContainers(ctx context.Context, ownerID *owner.ID, opts ...CallOption) ([]*cid.ID, error)
DeleteContainer(ctx context.Context, cid *cid.ID, opts ...CallOption) error
GetEACL(ctx context.Context, cid *cid.ID, opts ...CallOption) (*eacl.Table, error)
SetEACL(ctx context.Context, table *eacl.Table, opts ...CallOption) error
}
type Accounting interface {
Balance(ctx context.Context, owner *owner.ID, opts ...CallOption) (*accounting.Decimal, error)
}
type clientPack struct {
client Client
healthy bool
address string
}
type CallOption func(config *callConfig)
type callConfig struct {
isRetry bool
useDefaultSession bool
key *ecdsa.PrivateKey
btoken *token.BearerToken
stoken *session.Token
}
func WithKey(key *ecdsa.PrivateKey) CallOption {
return func(config *callConfig) {
config.key = key
}
}
func WithBearer(token *token.BearerToken) CallOption {
return func(config *callConfig) {
config.btoken = token
}
}
func WithSession(token *session.Token) CallOption {
return func(config *callConfig) {
config.stoken = token
}
}
func retry() CallOption {
return func(config *callConfig) {
config.isRetry = true
}
}
func useDefaultSession() CallOption {
return func(config *callConfig) {
config.useDefaultSession = true
}
}
func cfgFromOpts(opts ...CallOption) *callConfig {
var cfg = new(callConfig)
for _, opt := range opts {
opt(cfg)
}
return cfg
}
var _ Pool = (*pool)(nil)
type pool struct {
innerPools []*innerPool
key *ecdsa.PrivateKey
owner *owner.ID
cancel context.CancelFunc
closedCh chan struct{}
cache *SessionCache
stokenDuration uint64
stokenThreshold time.Duration
}
type innerPool struct {
lock sync.RWMutex
sampler *Sampler
clientPacks []*clientPack
}
const (
defaultSessionTokenExpirationDuration = 100 // in blocks
defaultSessionTokenThreshold = 5 * time.Second
)
func newPool(ctx context.Context, options *BuilderOptions) (Pool, error) {
cache, err := NewCache()
if err != nil {
return nil, fmt.Errorf("couldn't create cache: %w", err)
}
if options.SessionExpirationDuration == 0 {
options.SessionExpirationDuration = defaultSessionTokenExpirationDuration
}
if options.SessionTokenThreshold <= 0 {
options.SessionTokenThreshold = defaultSessionTokenThreshold
}
ownerID := owner.NewIDFromPublicKey(&options.Key.PublicKey)
inner := make([]*innerPool, len(options.nodesParams))
var atLeastOneHealthy bool
for i, params := range options.nodesParams {
clientPacks := make([]*clientPack, len(params.weights))
for j, addr := range params.addresses {
c, err := options.clientBuilder(client.WithDefaultPrivateKey(options.Key),
client.WithURIAddress(addr, nil),
client.WithDialTimeout(options.NodeConnectionTimeout),
client.WithNeoFSErrorParsing())
if err != nil {
return nil, err
}
var healthy bool
cliRes, err := createSessionTokenForDuration(ctx, c, options.SessionExpirationDuration)
if err != nil && options.Logger != nil {
options.Logger.Warn("failed to create neofs session token for client",
zap.String("address", addr),
zap.Error(err))
} else if err == nil {
healthy, atLeastOneHealthy = true, true
st := sessionTokenForOwner(ownerID, cliRes)
// sign the session token and cache it on success
if err = st.Sign(options.Key); err == nil {
_ = cache.Put(formCacheKey(addr, options.Key), st)
}
}
clientPacks[j] = &clientPack{client: c, healthy: healthy, address: addr}
}
source := rand.NewSource(time.Now().UnixNano())
sampler := NewSampler(params.weights, source)
inner[i] = &innerPool{
sampler: sampler,
clientPacks: clientPacks,
}
}
if !atLeastOneHealthy {
return nil, fmt.Errorf("at least one node must be healthy")
}
ctx, cancel := context.WithCancel(ctx)
pool := &pool{
innerPools: inner,
key: options.Key,
owner: ownerID,
cancel: cancel,
closedCh: make(chan struct{}),
cache: cache,
stokenDuration: options.SessionExpirationDuration,
stokenThreshold: options.SessionTokenThreshold,
}
go startRebalance(ctx, pool, options)
return pool, nil
}
func startRebalance(ctx context.Context, p *pool, options *BuilderOptions) {
ticker := time.NewTimer(options.ClientRebalanceInterval)
buffers := make([][]float64, len(options.nodesParams))
for i, params := range options.nodesParams {
buffers[i] = make([]float64, len(params.weights))
}
for {
select {
case <-ctx.Done():
close(p.closedCh)
return
case <-ticker.C:
updateNodesHealth(ctx, p, options, buffers)
ticker.Reset(options.ClientRebalanceInterval)
}
}
}
func updateNodesHealth(ctx context.Context, p *pool, options *BuilderOptions, 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()
updateInnerNodesHealth(ctx, p, i, options, bufferWeights)
}(i, inner)
}
wg.Wait()
}
func updateInnerNodesHealth(ctx context.Context, pool *pool, i int, options *BuilderOptions, bufferWeights []float64) {
if i > len(pool.innerPools)-1 {
return
}
p := pool.innerPools[i]
healthyChanged := false
wg := sync.WaitGroup{}
var prmEndpoint client.PrmEndpointInfo
for j, cPack := range p.clientPacks {
wg.Add(1)
go func(j int, cli Client) {
defer wg.Done()
ok := true
tctx, c := context.WithTimeout(ctx, options.NodeRequestTimeout)
defer c()
if _, err := cli.EndpointInfo(tctx, prmEndpoint); err != nil {
ok = false
bufferWeights[j] = 0
}
p.lock.RLock()
cp := *p.clientPacks[j]
p.lock.RUnlock()
if ok {
bufferWeights[j] = options.nodesParams[i].weights[j]
if !cp.healthy {
cliRes, err := createSessionTokenForDuration(ctx, cli, options.SessionExpirationDuration)
if err != nil {
ok = false
bufferWeights[j] = 0
} else {
tkn := pool.newSessionToken(cliRes)
_ = pool.cache.Put(formCacheKey(cp.address, pool.key), tkn)
}
}
} else {
pool.cache.DeleteByPrefix(cp.address)
}
p.lock.Lock()
if p.clientPacks[j].healthy != ok {
p.clientPacks[j].healthy = ok
healthyChanged = true
}
p.lock.Unlock()
}(j, cPack.client)
}
wg.Wait()
if healthyChanged {
probabilities := adjustWeights(bufferWeights)
source := rand.NewSource(time.Now().UnixNano())
p.lock.Lock()
p.sampler = NewSampler(probabilities, source)
p.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, *session.Token, error) {
cp, err := p.connection()
if err != nil {
return nil, nil, err
}
tok := p.cache.Get(formCacheKey(cp.address, p.key))
return cp.client, tok, nil
}
func (p *pool) connection() (*clientPack, 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() (*clientPack, error) {
p.lock.RLock()
defer p.lock.RUnlock()
if len(p.clientPacks) == 1 {
cp := p.clientPacks[0]
if cp.healthy {
return cp, nil
}
return nil, errors.New("no healthy client")
}
attempts := 3 * len(p.clientPacks)
for k := 0; k < attempts; k++ {
i := p.sampler.Next()
if cp := p.clientPacks[i]; cp.healthy {
return cp, nil
}
}
return nil, errors.New("no healthy client")
}
func (p *pool) OwnerID() *owner.ID {
return p.owner
}
func formCacheKey(address string, key *ecdsa.PrivateKey) string {
k := keys.PrivateKey{PrivateKey: *key}
return address + k.String()
}
func (p *pool) conn(ctx context.Context, cfg *callConfig) (*clientPack, error) {
cp, err := p.connection()
if err != nil {
return nil, err
}
key := p.key
if cfg.key != nil {
key = cfg.key
}
sessionToken := cfg.stoken
if sessionToken == nil && cfg.useDefaultSession {
cacheKey := formCacheKey(cp.address, key)
sessionToken = p.cache.Get(cacheKey)
if sessionToken == nil {
cliRes, err := createSessionTokenForDuration(ctx, cp.client, p.stokenDuration)
if err != nil {
return nil, err
}
ownerID := owner.NewIDFromPublicKey(&key.PublicKey)
sessionToken = sessionTokenForOwner(ownerID, cliRes)
cfg.stoken = sessionToken
_ = p.cache.Put(cacheKey, sessionToken)
}
}
return cp, nil
}
func (p *pool) checkSessionTokenErr(err error, address string) bool {
if err == nil {
return false
}
if strings.Contains(err.Error(), "session token does not exist") ||
strings.Contains(err.Error(), "session token has been expired") {
p.cache.DeleteByPrefix(address)
return true
}
return false
}
func createSessionTokenForDuration(ctx context.Context, c Client, dur uint64) (*client.ResSessionCreate, error) {
ni, err := c.NetworkInfo(ctx, client.PrmNetworkInfo{})
if err != nil {
return nil, err
}
epoch := ni.Info().CurrentEpoch()
var prm client.PrmSessionCreate
if math.MaxUint64-epoch < dur {
prm.SetExp(math.MaxUint64)
} else {
prm.SetExp(epoch + dur)
}
return c.SessionCreate(ctx, prm)
}
func (p *pool) removeSessionTokenAfterThreshold(cfg *callConfig) error {
cp, err := p.connection()
if err != nil {
return err
}
key := p.key
if cfg.key != nil {
key = cfg.key
}
ts, ok := p.cache.GetAccessTime(formCacheKey(cp.address, key))
if ok && time.Since(ts) > p.stokenThreshold {
p.cache.DeleteByPrefix(cp.address)
}
return nil
}
type callContext struct {
// base context for RPC
context.Context
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.Token)
}
func (p *pool) initCallContext(ctx *callContext, cfg *callConfig) 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.client
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 && cfg.useDefaultSession
return err
}
type callContextWithRetry struct {
callContext
noRetry bool
}
func (p *pool) initCallContextWithRetry(ctx *callContextWithRetry, cfg *callConfig) error {
err := p.initCallContext(&ctx.callContext, cfg)
if err != nil {
return err
}
// don't retry if session was specified by the caller
ctx.noRetry = cfg.stoken != nil
return nil
}
// opens new session or uses cached one.
// Must be called only on initialized callContext with set sessionTarget.
func (p *pool) openDefaultSession(ctx *callContext) error {
cacheKey := formCacheKey(ctx.endpoint, ctx.key)
tok := p.cache.Get(cacheKey)
if tok != nil {
// use cached token
ctx.sessionTarget(*tok)
return nil
}
// open new session
cliRes, err := createSessionTokenForDuration(ctx, ctx.client, p.stokenDuration)
if err != nil {
return fmt.Errorf("session API client: %w", err)
}
tok = sessionTokenForOwner(owner.NewIDFromPublicKey(&ctx.key.PublicKey), cliRes)
// sign the token
err = tok.Sign(ctx.key)
if err != nil {
return fmt.Errorf("sign token of the opened session: %w", err)
}
// cache the opened session
p.cache.Put(cacheKey, tok)
ctx.sessionTarget(*tok)
return nil
}
// opens default session (if sessionDefault is set), and calls f. If f returns
// session-related error (*), and retrying is enabled, then f is called once more.
//
// (*) in this case cached token is removed.
func (p *pool) callWithRetry(ctx *callContextWithRetry, f func() error) error {
var err error
if ctx.sessionDefault {
err = p.openDefaultSession(&ctx.callContext)
if err != nil {
return fmt.Errorf("open default session: %w", err)
}
}
err = f()
if p.checkSessionTokenErr(err, ctx.endpoint) && !ctx.noRetry {
// don't retry anymore
ctx.noRetry = true
return p.callWithRetry(ctx, f)
}
return err
}
func (p *pool) PutObject(ctx context.Context, hdr object.Object, payload io.Reader, opts ...CallOption) (*oid.ID, error) {
cfg := cfgFromOpts(append(opts, useDefaultSession())...)
// Put object is different from other object service methods. Put request
// can't be resent in case of session token failures (i.e. session token is
// invalid due to lifetime expiration or server restart). The reason is that
// object's payload can be provided as a stream that should be read only once.
//
// To solve this issue, pool regenerates session tokens upon each request.
// In case of subsequent requests, pool avoids session token initialization
// by checking when the session token was accessed for the last time. If it
// hits a threshold, session token is removed from cache for a new one to be
// issued.
err := p.removeSessionTokenAfterThreshold(cfg)
if err != nil {
return nil, err
}
var ctxCall callContext
ctxCall.Context = ctx
err = p.initCallContext(&ctxCall, cfg)
if err != nil {
return nil, fmt.Errorf("init call context")
}
var prm client.PrmObjectPutInit
wObj, err := ctxCall.client.ObjectPutInit(ctx, prm)
if err != nil {
return nil, fmt.Errorf("init writing on API client: %w", err)
}
if ctxCall.sessionDefault {
ctxCall.sessionTarget = wObj.WithinSession
err = p.openDefaultSession(&ctxCall)
if err != nil {
return nil, fmt.Errorf("open default session: %w", err)
}
}
wObj.UseKey(*ctxCall.key)
if cfg.btoken != nil {
wObj.WithBearerToken(*cfg.btoken)
}
if wObj.WriteHeader(hdr) {
sz := hdr.PayloadSize()
if data := hdr.Payload(); len(data) > 0 {
if payload != nil {
payload = io.MultiReader(bytes.NewReader(data), payload)
} else {
payload = bytes.NewReader(data)
sz = uint64(len(data))
}
}
if payload != nil {
const defaultBufferSizePut = 4096 // configure?
if sz == 0 || sz > defaultBufferSizePut {
sz = defaultBufferSizePut
}
buf := make([]byte, sz)
var n int
for {
n, err = payload.Read(buf)
if n > 0 {
if !wObj.WritePayloadChunk(buf[:n]) {
break
}
continue
}
if errors.Is(err, io.EOF) {
break
}
return nil, fmt.Errorf("read payload: %w", err)
}
}
}
res, err := wObj.Close()
if err != nil { // here err already carries both status and client errors
// removes session token from cache in case of token error
p.checkSessionTokenErr(err, ctxCall.endpoint)
return nil, fmt.Errorf("client failure: %w", err)
}
var id oid.ID
if !res.ReadStoredObjectID(&id) {
return nil, errors.New("missing ID of the stored object")
}
return &id, nil
}
func (p *pool) DeleteObject(ctx context.Context, addr address.Address, opts ...CallOption) error {
cfg := cfgFromOpts(append(opts, useDefaultSession())...)
var prm client.PrmObjectDelete
var cc callContextWithRetry
cc.Context = ctx
cc.sessionTarget = prm.WithinSession
err := p.initCallContextWithRetry(&cc, cfg)
if err != nil {
return err
}
if cnr := addr.ContainerID(); cnr != nil {
prm.FromContainer(*cnr)
}
if obj := addr.ObjectID(); obj != nil {
prm.ByID(*obj)
}
return p.callWithRetry(&cc, func() error {
_, err := cc.client.ObjectDelete(ctx, prm)
if err != nil {
return fmt.Errorf("remove object via client: %w", err)
}
return nil
})
}
type objectReadCloser client.ObjectReader
func (x *objectReadCloser) Read(p []byte) (int, error) {
return (*client.ObjectReader)(x).Read(p)
}
func (x *objectReadCloser) Close() error {
_, err := (*client.ObjectReader)(x).Close()
return err
}
type ResGetObject struct {
Header object.Object
Payload io.ReadCloser
}
func (p *pool) GetObject(ctx context.Context, addr address.Address, opts ...CallOption) (*ResGetObject, error) {
cfg := cfgFromOpts(append(opts, useDefaultSession())...)
var prm client.PrmObjectGet
var cc callContextWithRetry
cc.Context = ctx
cc.sessionTarget = prm.WithinSession
err := p.initCallContextWithRetry(&cc, cfg)
if err != nil {
return nil, err
}
if cnr := addr.ContainerID(); cnr != nil {
prm.FromContainer(*cnr)
}
if obj := addr.ObjectID(); obj != nil {
prm.ByID(*obj)
}
var res ResGetObject
err = p.callWithRetry(&cc, func() error {
rObj, err := cc.client.ObjectGetInit(ctx, prm)
if err != nil {
return fmt.Errorf("init object reading on client: %w", err)
}
rObj.UseKey(*cc.key)
if !rObj.ReadHeader(&res.Header) {
_, err = rObj.Close()
return fmt.Errorf("read header: %w", err)
}
res.Payload = (*objectReadCloser)(rObj)
return nil
})
if err != nil {
return nil, err
}
return &res, nil
}
func (p *pool) HeadObject(ctx context.Context, addr address.Address, opts ...CallOption) (*object.Object, error) {
cfg := cfgFromOpts(append(opts, useDefaultSession())...)
var prm client.PrmObjectHead
var cc callContextWithRetry
cc.Context = ctx
cc.sessionTarget = prm.WithinSession
err := p.initCallContextWithRetry(&cc, cfg)
if err != nil {
return nil, err
}
if cnr := addr.ContainerID(); cnr != nil {
prm.FromContainer(*cnr)
}
if obj := addr.ObjectID(); obj != nil {
prm.ByID(*obj)
}
var obj object.Object
err = p.callWithRetry(&cc, func() error {
res, err := cc.client.ObjectHead(ctx, prm)
if err != nil {
return fmt.Errorf("read object header via client: %w", err)
}
if !res.ReadHeader(&obj) {
return errors.New("missing object header in response")
}
return nil
})
if err != nil {
return nil, err
}
return &obj, nil
}
type ResObjectRange struct {
payload *client.ObjectRangeReader
}
func (x *ResObjectRange) Read(p []byte) (int, error) {
return x.payload.Read(p)
}
func (x *ResObjectRange) Close() error {
_, err := x.payload.Close()
return err
}
func (p *pool) ObjectRange(ctx context.Context, addr address.Address, off, ln uint64, opts ...CallOption) (*ResObjectRange, error) {
cfg := cfgFromOpts(append(opts, useDefaultSession())...)
var prm client.PrmObjectRange
prm.SetOffset(off)
prm.SetLength(ln)
var cc callContextWithRetry
cc.Context = ctx
cc.sessionTarget = prm.WithinSession
err := p.initCallContextWithRetry(&cc, cfg)
if err != nil {
return nil, err
}
if cnr := addr.ContainerID(); cnr != nil {
prm.FromContainer(*cnr)
}
if obj := addr.ObjectID(); obj != nil {
prm.ByID(*obj)
}
var res ResObjectRange
err = p.callWithRetry(&cc, func() error {
var err error
res.payload, err = cc.client.ObjectRangeInit(ctx, prm)
if err != nil {
return fmt.Errorf("init payload range reading on client: %w", err)
}
res.payload.UseKey(*cc.key)
return nil
})
if err != nil {
return nil, err
}
return &res, nil
}
type ResObjectSearch struct {
r *client.ObjectListReader
}
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
}
func (x *ResObjectSearch) Close() {
_, _ = x.r.Close()
}
func (p *pool) SearchObjects(ctx context.Context, idCnr cid.ID, filters object.SearchFilters, opts ...CallOption) (*ResObjectSearch, error) {
cfg := cfgFromOpts(append(opts, useDefaultSession())...)
var prm client.PrmObjectSearch
prm.InContainer(idCnr)
prm.SetFilters(filters)
var cc callContextWithRetry
cc.Context = ctx
cc.sessionTarget = prm.WithinSession
err := p.initCallContextWithRetry(&cc, cfg)
if err != nil {
return nil, err
}
var res ResObjectSearch
err = p.callWithRetry(&cc, func() error {
var err error
res.r, err = cc.client.ObjectSearchInit(ctx, prm)
if err != nil {
return fmt.Errorf("init object searching on client: %w", err)
}
res.r.UseKey(*cc.key)
return nil
})
if err != nil {
return nil, err
}
return &res, nil
}
func (p *pool) PutContainer(ctx context.Context, cnr *container.Container, opts ...CallOption) (*cid.ID, error) {
cfg := cfgFromOpts(opts...)
cp, err := p.conn(ctx, cfg)
if err != nil {
return nil, err
}
var cliPrm client.PrmContainerPut
if cnr != nil {
cliPrm.SetContainer(*cnr)
}
res, err := cp.client.ContainerPut(ctx, cliPrm)
if p.checkSessionTokenErr(err, cp.address) && !cfg.isRetry {
opts = append(opts, retry())
return p.PutContainer(ctx, cnr, opts...)
}
if err != nil { // here err already carries both status and client errors
return nil, err
}
return res.ID(), nil
}
func (p *pool) GetContainer(ctx context.Context, cid *cid.ID, opts ...CallOption) (*container.Container, error) {
cfg := cfgFromOpts(opts...)
cp, err := p.conn(ctx, cfg)
if err != nil {
return nil, err
}
var cliPrm client.PrmContainerGet
if cid != nil {
cliPrm.SetContainer(*cid)
}
res, err := cp.client.ContainerGet(ctx, cliPrm)
if p.checkSessionTokenErr(err, cp.address) && !cfg.isRetry {
opts = append(opts, retry())
return p.GetContainer(ctx, cid, opts...)
}
if err != nil { // here err already carries both status and client errors
return nil, err
}
return res.Container(), nil
}
func (p *pool) ListContainers(ctx context.Context, ownerID *owner.ID, opts ...CallOption) ([]*cid.ID, error) {
cfg := cfgFromOpts(opts...)
cp, err := p.conn(ctx, cfg)
if err != nil {
return nil, err
}
var cliPrm client.PrmContainerList
if ownerID != nil {
cliPrm.SetAccount(*ownerID)
}
res, err := cp.client.ContainerList(ctx, cliPrm)
if p.checkSessionTokenErr(err, cp.address) && !cfg.isRetry {
opts = append(opts, retry())
return p.ListContainers(ctx, ownerID, opts...)
}
if err != nil { // here err already carries both status and client errors
return nil, err
}
return res.Containers(), nil
}
func (p *pool) DeleteContainer(ctx context.Context, cid *cid.ID, opts ...CallOption) error {
cfg := cfgFromOpts(opts...)
cp, err := p.conn(ctx, cfg)
if err != nil {
return err
}
var cliPrm client.PrmContainerDelete
if cid != nil {
cliPrm.SetContainer(*cid)
}
if cfg.stoken != nil {
cliPrm.SetSessionToken(*cfg.stoken)
}
_, err = cp.client.ContainerDelete(ctx, cliPrm)
if p.checkSessionTokenErr(err, cp.address) && !cfg.isRetry {
opts = append(opts, retry())
return p.DeleteContainer(ctx, cid, opts...)
}
// here err already carries both status and client errors
return err
}
func (p *pool) GetEACL(ctx context.Context, cid *cid.ID, opts ...CallOption) (*eacl.Table, error) {
cfg := cfgFromOpts(opts...)
cp, err := p.conn(ctx, cfg)
if err != nil {
return nil, err
}
var cliPrm client.PrmContainerEACL
if cid != nil {
cliPrm.SetContainer(*cid)
}
res, err := cp.client.ContainerEACL(ctx, cliPrm)
if p.checkSessionTokenErr(err, cp.address) && !cfg.isRetry {
opts = append(opts, retry())
return p.GetEACL(ctx, cid, opts...)
}
if err != nil { // here err already carries both status and client errors
return nil, err
}
return res.Table(), nil
}
func (p *pool) SetEACL(ctx context.Context, table *eacl.Table, opts ...CallOption) error {
cfg := cfgFromOpts(opts...)
cp, err := p.conn(ctx, cfg)
if err != nil {
return err
}
var cliPrm client.PrmContainerSetEACL
if table != nil {
cliPrm.SetTable(*table)
}
_, err = cp.client.ContainerSetEACL(ctx, cliPrm)
if p.checkSessionTokenErr(err, cp.address) && !cfg.isRetry {
opts = append(opts, retry())
return p.SetEACL(ctx, table, opts...)
}
// here err already carries both status and client errors
return err
}
func (p *pool) Balance(ctx context.Context, o *owner.ID, opts ...CallOption) (*accounting.Decimal, error) {
cfg := cfgFromOpts(opts...)
cp, err := p.conn(ctx, cfg)
if err != nil {
return nil, err
}
var cliPrm client.PrmBalanceGet
if o != nil {
cliPrm.SetAccount(*o)
}
res, err := cp.client.BalanceGet(ctx, cliPrm)
if err != nil { // here err already carries both status and client errors
return nil, err
}
return res.Amount(), nil
}
func (p *pool) WaitForContainerPresence(ctx context.Context, cid *cid.ID, pollParams *ContainerPollingParams) error {
conn, _, err := p.Connection()
if err != nil {
return err
}
wctx, cancel := context.WithTimeout(ctx, pollParams.CreationTimeout)
defer cancel()
ticker := time.NewTimer(pollParams.PollInterval)
defer ticker.Stop()
wdone := wctx.Done()
done := ctx.Done()
var cliPrm client.PrmContainerGet
if cid != nil {
cliPrm.SetContainer(*cid)
}
for {
select {
case <-done:
return ctx.Err()
case <-wdone:
return wctx.Err()
case <-ticker.C:
_, err = conn.ContainerGet(ctx, cliPrm)
if err == nil {
return nil
}
ticker.Reset(pollParams.PollInterval)
}
}
}
// Close closes the pool and releases all the associated resources.
func (p *pool) Close() {
p.cancel()
<-p.closedCh
}
// creates new session token from SessionCreate call result.
func (p *pool) newSessionToken(cliRes *client.ResSessionCreate) *session.Token {
return sessionTokenForOwner(p.owner, cliRes)
}
// creates new session token with specified owner from SessionCreate call result.
func sessionTokenForOwner(id *owner.ID, cliRes *client.ResSessionCreate) *session.Token {
st := session.NewToken()
st.SetOwnerID(id)
st.SetID(cliRes.ID())
st.SetSessionKey(cliRes.PublicKey())
return st
}