forked from TrueCloudLab/frostfs-sdk-go
[#74] Add priority to nodes
Signed-off-by: Denis Kirillov <denis@nspcc.ru>
This commit is contained in:
Denis Kirillov
Alex Vanin
parent
279a5a1e0b
commit
618eeb8172
3 changed files with 244 additions and 98 deletions
155
pool/pool.go
155
pool/pool.go
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@ -9,6 +9,7 @@ import (
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"fmt"
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"math"
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"math/rand"
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"sort"
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"strings"
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"sync"
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"time"
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@ -38,16 +39,26 @@ type BuilderOptions struct {
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NodeRequestTimeout time.Duration
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ClientRebalanceInterval time.Duration
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SessionExpirationEpoch uint64
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weights []float64
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addresses []string
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nodesParams []*NodesParam
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clientBuilder func(opts ...client.Option) (client.Client, error)
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}
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type NodesParam struct {
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priority int
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addresses []string
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weights []float64
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}
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type NodeParam struct {
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priority int
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address string
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weight float64
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}
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// Builder is an interim structure used to collect node addresses/weights and
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// build connection pool subsequently.
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type Builder struct {
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addresses []string
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weights []float64
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nodeParams []NodeParam
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}
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// ContainerPollingParams contains parameters used in polling is a container created or not.
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@ -65,20 +76,40 @@ func DefaultPollingParams() *ContainerPollingParams {
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}
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// AddNode adds address/weight pair to node PoolBuilder list.
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func (pb *Builder) AddNode(address string, weight float64) *Builder {
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pb.addresses = append(pb.addresses, address)
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pb.weights = append(pb.weights, weight)
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func (pb *Builder) AddNode(address string, priority int, weight float64) *Builder {
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pb.nodeParams = append(pb.nodeParams, NodeParam{
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address: address,
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priority: priority,
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weight: weight,
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})
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return pb
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}
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// Build creates new pool based on current PoolBuilder state and options.
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func (pb *Builder) Build(ctx context.Context, options *BuilderOptions) (Pool, error) {
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if len(pb.addresses) == 0 {
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if len(pb.nodeParams) == 0 {
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return nil, errors.New("no NeoFS peers configured")
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}
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options.weights = adjustWeights(pb.weights)
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options.addresses = pb.addresses
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nodesParams := make(map[int]*NodesParam)
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for _, param := range pb.nodeParams {
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nodes, ok := nodesParams[param.priority]
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if !ok {
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nodes = &NodesParam{priority: param.priority}
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}
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nodes.addresses = append(nodes.addresses, param.address)
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nodes.weights = append(nodes.weights, param.weight)
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nodesParams[param.priority] = nodes
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}
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for _, nodes := range nodesParams {
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nodes.weights = adjustWeights(nodes.weights)
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options.nodesParams = append(options.nodesParams, nodes)
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}
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sort.Slice(options.nodesParams, func(i, j int) bool {
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return options.nodesParams[i].priority < options.nodesParams[j].priority
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})
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if options.clientBuilder == nil {
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options.clientBuilder = client.New
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@ -169,16 +200,20 @@ func cfgFromOpts(opts ...CallOption) *callConfig {
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var _ Pool = (*pool)(nil)
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type pool struct {
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lock sync.RWMutex
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sampler *Sampler
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innerPools []*innerPool
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key *ecdsa.PrivateKey
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owner *owner.ID
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clientPacks []*clientPack
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cancel context.CancelFunc
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closedCh chan struct{}
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cache *SessionCache
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}
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type innerPool struct {
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lock sync.RWMutex
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sampler *Sampler
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clientPacks []*clientPack
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}
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func newPool(ctx context.Context, options *BuilderOptions) (Pool, error) {
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wallet, err := owner.NEO3WalletFromPublicKey(&options.Key.PublicKey)
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if err != nil {
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@ -192,9 +227,11 @@ func newPool(ctx context.Context, options *BuilderOptions) (Pool, error) {
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ownerID := owner.NewIDFromNeo3Wallet(wallet)
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clientPacks := make([]*clientPack, len(options.weights))
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inner := make([]*innerPool, len(options.nodesParams))
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var atLeastOneHealthy bool
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for i, address := range options.addresses {
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for i, params := range options.nodesParams {
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clientPacks := make([]*clientPack, len(params.weights))
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for j, address := range params.addresses {
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c, err := options.clientBuilder(client.WithDefaultPrivateKey(options.Key),
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client.WithURIAddress(address, nil),
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client.WithDialTimeout(options.NodeConnectionTimeout))
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@ -209,27 +246,29 @@ func newPool(ctx context.Context, options *BuilderOptions) (Pool, error) {
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zap.Error(err))
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} else if err == nil {
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healthy, atLeastOneHealthy = true, true
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st := sessionTokenForOwner(ownerID, cliRes)
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_ = cache.Put(formCacheKey(address, options.Key), st)
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}
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clientPacks[i] = &clientPack{client: c, healthy: healthy, address: address}
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clientPacks[j] = &clientPack{client: c, healthy: healthy, address: address}
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}
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source := rand.NewSource(time.Now().UnixNano())
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sampler := NewSampler(params.weights, source)
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inner[i] = &innerPool{
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sampler: sampler,
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clientPacks: clientPacks,
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}
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}
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if !atLeastOneHealthy {
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return nil, fmt.Errorf("at least one node must be healthy")
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}
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source := rand.NewSource(time.Now().UnixNano())
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sampler := NewSampler(options.weights, source)
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ctx, cancel := context.WithCancel(ctx)
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pool := &pool{
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sampler: sampler,
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innerPools: inner,
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key: options.Key,
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owner: ownerID,
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clientPacks: clientPacks,
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cancel: cancel,
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closedCh: make(chan struct{}),
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cache: cache,
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@ -240,7 +279,10 @@ func newPool(ctx context.Context, options *BuilderOptions) (Pool, error) {
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func startRebalance(ctx context.Context, p *pool, options *BuilderOptions) {
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ticker := time.NewTimer(options.ClientRebalanceInterval)
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buffer := make([]float64, len(options.weights))
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buffers := make([][]float64, len(options.nodesParams))
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for i, params := range options.nodesParams {
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buffers[i] = make([]float64, len(params.weights))
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}
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for {
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select {
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@ -248,57 +290,72 @@ func startRebalance(ctx context.Context, p *pool, options *BuilderOptions) {
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close(p.closedCh)
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return
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case <-ticker.C:
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updateNodesHealth(ctx, p, options, buffer)
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updateNodesHealth(ctx, p, options, buffers)
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ticker.Reset(options.ClientRebalanceInterval)
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}
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}
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}
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func updateNodesHealth(ctx context.Context, p *pool, options *BuilderOptions, bufferWeights []float64) {
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if len(bufferWeights) != len(p.clientPacks) {
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bufferWeights = make([]float64, len(p.clientPacks))
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}
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healthyChanged := false
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func updateNodesHealth(ctx context.Context, p *pool, options *BuilderOptions, buffers [][]float64) {
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wg := sync.WaitGroup{}
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for i, cPack := range p.clientPacks {
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for i, inner := range p.innerPools {
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wg.Add(1)
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go func(i int, client client.Client) {
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bufferWeights := buffers[i]
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go func(i int, innerPool *innerPool) {
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defer wg.Done()
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updateInnerNodesHealth(ctx, p, i, options, bufferWeights)
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}(i, inner)
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}
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wg.Wait()
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}
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func updateInnerNodesHealth(ctx context.Context, pool *pool, i int, options *BuilderOptions, bufferWeights []float64) {
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if i > len(pool.innerPools)-1 {
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return
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}
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p := pool.innerPools[i]
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healthyChanged := false
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wg := sync.WaitGroup{}
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for j, cPack := range p.clientPacks {
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wg.Add(1)
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go func(j int, client client.Client) {
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defer wg.Done()
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ok := true
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tctx, c := context.WithTimeout(ctx, options.NodeRequestTimeout)
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defer c()
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if _, err := client.EndpointInfo(tctx); err != nil {
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ok = false
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bufferWeights[i] = 0
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bufferWeights[j] = 0
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}
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p.lock.RLock()
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cp := *p.clientPacks[i]
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cp := *p.clientPacks[j]
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p.lock.RUnlock()
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if ok {
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bufferWeights[i] = options.weights[i]
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bufferWeights[j] = options.nodesParams[i].weights[j]
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if !cp.healthy {
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if cliRes, err := client.CreateSession(ctx, options.SessionExpirationEpoch); err != nil {
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ok = false
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bufferWeights[i] = 0
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bufferWeights[j] = 0
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} else {
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tkn := p.newSessionToken(cliRes)
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tkn := pool.newSessionToken(cliRes)
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_ = p.cache.Put(formCacheKey(cp.address, p.key), tkn)
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_ = pool.cache.Put(formCacheKey(cp.address, pool.key), tkn)
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}
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}
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} else {
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p.cache.DeleteByPrefix(cp.address)
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pool.cache.DeleteByPrefix(cp.address)
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}
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p.lock.Lock()
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if p.clientPacks[i].healthy != ok {
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p.clientPacks[i].healthy = ok
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if p.clientPacks[j].healthy != ok {
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p.clientPacks[j].healthy = ok
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healthyChanged = true
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}
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p.lock.Unlock()
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}(i, cPack.client)
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}(j, cPack.client)
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}
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wg.Wait()
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@ -337,6 +394,17 @@ func (p *pool) Connection() (client.Client, *session.Token, error) {
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}
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func (p *pool) connection() (*clientPack, error) {
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for _, inner := range p.innerPools {
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cp, err := inner.connection()
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if err == nil {
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return cp, nil
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}
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}
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return nil, errors.New("no healthy client")
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}
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func (p *innerPool) connection() (*clientPack, error) {
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p.lock.RLock()
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defer p.lock.RUnlock()
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if len(p.clientPacks) == 1 {
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@ -353,6 +421,7 @@ func (p *pool) connection() (*clientPack, error) {
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return cp, nil
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}
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}
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return nil, errors.New("no healthy client")
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}
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@ -843,7 +912,7 @@ func (p *pool) WaitForContainerPresence(ctx context.Context, cid *cid.ID, pollPa
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}
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}
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// Cloce closes the pool and releases all the associated resources.
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// Close closes the pool and releases all the associated resources.
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func (p *pool) Close() {
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p.cancel()
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<-p.closedCh
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@ -27,7 +27,7 @@ func TestBuildPoolClientFailed(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer0", 1, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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@ -54,7 +54,7 @@ func TestBuildPoolCreateSessionFailed(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer0", 1, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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@ -108,8 +108,8 @@ func TestBuildPoolOneNodeFailed(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 9)
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pb.AddNode("peer1", 1)
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pb.AddNode("peer0", 9, 1)
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pb.AddNode("peer1", 1, 1)
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log, err := zap.NewProduction()
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require.NoError(t, err)
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@ -159,7 +159,7 @@ func TestOneNode(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer0", 1, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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@ -196,8 +196,8 @@ func TestTwoNodes(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer1", 1)
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pb.AddNode("peer0", 1, 1)
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pb.AddNode("peer1", 1, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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@ -248,8 +248,8 @@ func TestOneOfTwoFailed(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer1", 9)
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pb.AddNode("peer0", 1, 1)
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pb.AddNode("peer1", 9, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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@ -283,8 +283,8 @@ func TestTwoFailed(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer1", 1)
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pb.AddNode("peer0", 1, 1)
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pb.AddNode("peer1", 1, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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@ -327,7 +327,7 @@ func TestSessionCache(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer0", 1, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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@ -340,6 +340,7 @@ func TestSessionCache(t *testing.T) {
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pool, err := pb.Build(ctx, opts)
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require.NoError(t, err)
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t.Cleanup(pool.Close)
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// cache must contain session token
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_, st, err := pool.Connection()
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@ -363,6 +364,71 @@ func TestSessionCache(t *testing.T) {
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require.Contains(t, tokens, st)
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}
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func TestPriority(t *testing.T) {
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t.Skip("NeoFS API client can't be mocked") // neofs-sdk-go#85
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ctrl := gomock.NewController(t)
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ctrl2 := gomock.NewController(t)
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var tokens []*session.Token
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clientCount := -1
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clientBuilder := func(opts ...client.Option) (client.Client, error) {
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clientCount++
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mockClient := NewMockClient(ctrl)
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mockClient.EXPECT().CreateSession(gomock.Any(), gomock.Any(), gomock.Any()).DoAndReturn(func(_, _ interface{}, _ ...interface{}) (*session.Token, error) {
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tok := newToken(t)
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tokens = append(tokens, tok)
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return tok, nil
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}).AnyTimes()
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mockClient.EXPECT().EndpointInfo(gomock.Any(), gomock.Any()).Return(nil, fmt.Errorf("error")).AnyTimes()
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mockClient2 := NewMockClient(ctrl2)
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mockClient2.EXPECT().CreateSession(gomock.Any(), gomock.Any()).DoAndReturn(func(_, _ interface{}, _ ...interface{}) (*session.Token, error) {
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tok := newToken(t)
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tokens = append(tokens, tok)
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return tok, nil
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}).AnyTimes()
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mockClient2.EXPECT().EndpointInfo(gomock.Any(), gomock.Any()).Return(nil, nil).AnyTimes()
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if clientCount == 0 {
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return mockClient, nil
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}
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return mockClient2, nil
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1, 1)
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pb.AddNode("peer1", 2, 100)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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clientBuilder: clientBuilder,
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ClientRebalanceInterval: 1500 * time.Millisecond,
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}
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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pool, err := pb.Build(ctx, opts)
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require.NoError(t, err)
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t.Cleanup(pool.Close)
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firstNode := func() bool {
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_, st, err := pool.Connection()
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require.NoError(t, err)
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return st == tokens[0]
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}
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secondNode := func() bool {
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_, st, err := pool.Connection()
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require.NoError(t, err)
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return st == tokens[1]
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}
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require.Never(t, secondNode, time.Second, 200*time.Millisecond)
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require.Eventually(t, secondNode, time.Second, 200*time.Millisecond)
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require.Never(t, firstNode, time.Second, 200*time.Millisecond)
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}
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func TestSessionCacheWithKey(t *testing.T) {
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t.Skip("NeoFS API client can't be mocked") // neofs-sdk-go#85
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@ -386,11 +452,12 @@ func TestSessionCacheWithKey(t *testing.T) {
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}
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pb := new(Builder)
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pb.AddNode("peer0", 1)
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pb.AddNode("peer0", 1, 1)
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opts := &BuilderOptions{
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Key: newPrivateKey(t),
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clientBuilder: clientBuilder,
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ClientRebalanceInterval: 30 * time.Second,
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}
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|
||||
ctx, cancel := context.WithCancel(context.Background())
|
||||
|
|
@ -431,12 +498,16 @@ func TestWaitPresence(t *testing.T) {
|
|||
cache, err := NewCache()
|
||||
require.NoError(t, err)
|
||||
|
||||
p := &pool{
|
||||
inner := &innerPool{
|
||||
sampler: NewSampler([]float64{1}, rand.NewSource(0)),
|
||||
clientPacks: []*clientPack{{
|
||||
client: mockClient,
|
||||
healthy: true,
|
||||
}},
|
||||
}
|
||||
|
||||
p := &pool{
|
||||
innerPools: []*innerPool{inner},
|
||||
key: newPrivateKey(t),
|
||||
cache: cache,
|
||||
}
|
||||
|
|
|
|||
|
|
@ -62,18 +62,21 @@ func TestHealthyReweight(t *testing.T) {
|
|||
var (
|
||||
weights = []float64{0.9, 0.1}
|
||||
names = []string{"node0", "node1"}
|
||||
options = &BuilderOptions{weights: weights}
|
||||
options = &BuilderOptions{nodesParams: []*NodesParam{{weights: weights}}}
|
||||
buffer = make([]float64, len(weights))
|
||||
)
|
||||
|
||||
cache, err := NewCache()
|
||||
require.NoError(t, err)
|
||||
|
||||
p := &pool{
|
||||
inner := &innerPool{
|
||||
sampler: NewSampler(weights, rand.NewSource(0)),
|
||||
clientPacks: []*clientPack{
|
||||
{client: newNetmapMock(names[0], true), healthy: true, address: "address0"},
|
||||
{client: newNetmapMock(names[1], false), healthy: true, address: "address1"}},
|
||||
}
|
||||
p := &pool{
|
||||
innerPools: []*innerPool{inner},
|
||||
cache: cache,
|
||||
key: newPrivateKey(t),
|
||||
}
|
||||
|
|
@ -84,7 +87,7 @@ func TestHealthyReweight(t *testing.T) {
|
|||
mock0 := connection0.(clientMock)
|
||||
require.Equal(t, names[0], mock0.name)
|
||||
|
||||
updateNodesHealth(context.TODO(), p, options, buffer)
|
||||
updateInnerNodesHealth(context.TODO(), p, 0, options, buffer)
|
||||
|
||||
connection1, _, err := p.Connection()
|
||||
require.NoError(t, err)
|
||||
|
|
@ -92,12 +95,12 @@ func TestHealthyReweight(t *testing.T) {
|
|||
require.Equal(t, names[1], mock1.name)
|
||||
|
||||
// enabled first node again
|
||||
p.lock.Lock()
|
||||
p.clientPacks[0].client = newNetmapMock(names[0], false)
|
||||
p.lock.Unlock()
|
||||
inner.lock.Lock()
|
||||
inner.clientPacks[0].client = newNetmapMock(names[0], false)
|
||||
inner.lock.Unlock()
|
||||
|
||||
updateNodesHealth(context.TODO(), p, options, buffer)
|
||||
p.sampler = NewSampler(weights, rand.NewSource(0))
|
||||
updateInnerNodesHealth(context.TODO(), p, 0, options, buffer)
|
||||
inner.sampler = NewSampler(weights, rand.NewSource(0))
|
||||
|
||||
connection0, _, err = p.Connection()
|
||||
require.NoError(t, err)
|
||||
|
|
@ -111,21 +114,24 @@ func TestHealthyNoReweight(t *testing.T) {
|
|||
var (
|
||||
weights = []float64{0.9, 0.1}
|
||||
names = []string{"node0", "node1"}
|
||||
options = &BuilderOptions{weights: weights}
|
||||
options = &BuilderOptions{nodesParams: []*NodesParam{{weights: weights}}}
|
||||
buffer = make([]float64, len(weights))
|
||||
)
|
||||
|
||||
sampler := NewSampler(weights, rand.NewSource(0))
|
||||
p := &pool{
|
||||
inner := &innerPool{
|
||||
sampler: sampler,
|
||||
clientPacks: []*clientPack{
|
||||
{client: newNetmapMock(names[0], false), healthy: true},
|
||||
{client: newNetmapMock(names[1], false), healthy: true}},
|
||||
}
|
||||
|
||||
updateNodesHealth(context.TODO(), p, options, buffer)
|
||||
|
||||
p.lock.RLock()
|
||||
defer p.lock.RUnlock()
|
||||
require.Truef(t, sampler == p.sampler, "Sampler must not be changed. Expected: %p, actual: %p", sampler, p.sampler)
|
||||
p := &pool{
|
||||
innerPools: []*innerPool{inner},
|
||||
}
|
||||
|
||||
updateInnerNodesHealth(context.TODO(), p, 0, options, buffer)
|
||||
|
||||
inner.lock.RLock()
|
||||
defer inner.lock.RUnlock()
|
||||
require.Equal(t, inner.sampler, sampler)
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue