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client, resource_manager: resource manager client (#5810)
* impl token request Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * impl resouce manager client Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * impl token request and fix update bug Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * add test Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> impl token request and fix update bug Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * merge master Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * address comment Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * merge master Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> merge master Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> * add test Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> Signed-off-by: Cabinfever_B <cabinfeveroier@gmail.com> Co-authored-by: Ti Chi Robot <ti-community-prow-bot@tidb.io>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,278 @@ | ||
| // Copyright 2023 TiKV Project Authors. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package pd | ||
|
|
||
| import ( | ||
| "context" | ||
| "time" | ||
|
|
||
| "github.com/pingcap/errors" | ||
| rmpb "github.com/pingcap/kvproto/pkg/resource_manager" | ||
| "github.com/pingcap/log" | ||
| "go.uber.org/zap" | ||
| "google.golang.org/grpc" | ||
| ) | ||
|
|
||
| type actionType int | ||
|
|
||
| const ( | ||
| add actionType = 0 | ||
| modify actionType = 1 | ||
| ) | ||
|
|
||
| // ResourceManagerClient manages resource group info and token request. | ||
| type ResourceManagerClient interface { | ||
| ListResourceGroups(ctx context.Context) ([]*rmpb.ResourceGroup, error) | ||
| GetResourceGroup(ctx context.Context, resourceGroupName string) (*rmpb.ResourceGroup, error) | ||
| AddResourceGroup(ctx context.Context, metaGroup *rmpb.ResourceGroup) (string, error) | ||
| ModifyResourceGroup(ctx context.Context, metaGroup *rmpb.ResourceGroup) (string, error) | ||
| DeleteResourceGroup(ctx context.Context, resourceGroupName string) (string, error) | ||
| AcquireTokenBuckets(ctx context.Context, request *rmpb.TokenBucketsRequest) ([]*rmpb.TokenBucketResponse, error) | ||
| } | ||
|
|
||
| // resourceManagerClient gets the ResourceManager client of current PD leader. | ||
| func (c *client) resourceManagerClient() rmpb.ResourceManagerClient { | ||
| if cc, ok := c.clientConns.Load(c.GetLeaderAddr()); ok { | ||
| return rmpb.NewResourceManagerClient(cc.(*grpc.ClientConn)) | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // ListResourceGroups loads and returns all metadata of resource groups. | ||
| func (c *client) ListResourceGroups(ctx context.Context) ([]*rmpb.ResourceGroup, error) { | ||
| req := &rmpb.ListResourceGroupsRequest{} | ||
| resp, err := c.resourceManagerClient().ListResourceGroups(ctx, req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| resErr := resp.GetError() | ||
| if resErr != nil { | ||
| return nil, errors.Errorf("[resource_manager]" + resErr.Message) | ||
| } | ||
| return resp.GetGroups(), nil | ||
| } | ||
|
|
||
| func (c *client) GetResourceGroup(ctx context.Context, resourceGroupName string) (*rmpb.ResourceGroup, error) { | ||
| req := &rmpb.GetResourceGroupRequest{ | ||
| ResourceGroupName: resourceGroupName, | ||
| } | ||
| resp, err := c.resourceManagerClient().GetResourceGroup(ctx, req) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| resErr := resp.GetError() | ||
| if resErr != nil { | ||
| return nil, errors.Errorf("[resource_manager]" + resErr.Message) | ||
| } | ||
| return resp.GetGroup(), nil | ||
| } | ||
|
|
||
| func (c *client) AddResourceGroup(ctx context.Context, metaGroup *rmpb.ResourceGroup) (string, error) { | ||
| return c.putResourceGroup(ctx, metaGroup, add) | ||
| } | ||
|
|
||
| func (c *client) ModifyResourceGroup(ctx context.Context, metaGroup *rmpb.ResourceGroup) (string, error) { | ||
| return c.putResourceGroup(ctx, metaGroup, modify) | ||
| } | ||
|
|
||
| func (c *client) putResourceGroup(ctx context.Context, metaGroup *rmpb.ResourceGroup, typ actionType) (str string, err error) { | ||
| req := &rmpb.PutResourceGroupRequest{ | ||
| Group: metaGroup, | ||
| } | ||
| var resp *rmpb.PutResourceGroupResponse | ||
| switch typ { | ||
| case add: | ||
| resp, err = c.resourceManagerClient().AddResourceGroup(ctx, req) | ||
| case modify: | ||
| resp, err = c.resourceManagerClient().ModifyResourceGroup(ctx, req) | ||
| } | ||
| if err != nil { | ||
| return str, err | ||
| } | ||
| resErr := resp.GetError() | ||
| if resErr != nil { | ||
| return str, errors.Errorf("[resource_manager]" + resErr.Message) | ||
| } | ||
| str = resp.GetBody() | ||
| return | ||
| } | ||
|
|
||
| func (c *client) DeleteResourceGroup(ctx context.Context, resourceGroupName string) (string, error) { | ||
| req := &rmpb.DeleteResourceGroupRequest{ | ||
| ResourceGroupName: resourceGroupName, | ||
| } | ||
| resp, err := c.resourceManagerClient().DeleteResourceGroup(ctx, req) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| resErr := resp.GetError() | ||
| if resErr != nil { | ||
| return "", errors.Errorf("[resource_manager]" + resErr.Message) | ||
| } | ||
| return resp.GetBody(), nil | ||
| } | ||
|
|
||
| func (c *client) AcquireTokenBuckets(ctx context.Context, request *rmpb.TokenBucketsRequest) ([]*rmpb.TokenBucketResponse, error) { | ||
| req := &tokenRequest{ | ||
| done: make(chan error, 1), | ||
| requestCtx: ctx, | ||
| clientCtx: c.ctx, | ||
| Requeset: request, | ||
| } | ||
| c.tokenDispatcher.tokenBatchController.tokenRequestCh <- req | ||
| grantedTokens, err := req.Wait() | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return grantedTokens, err | ||
| } | ||
|
|
||
| type tokenRequest struct { | ||
| clientCtx context.Context | ||
| requestCtx context.Context | ||
| done chan error | ||
| Requeset *rmpb.TokenBucketsRequest | ||
| TokenBuckets []*rmpb.TokenBucketResponse | ||
| } | ||
|
|
||
| func (req *tokenRequest) Wait() (tokenBuckets []*rmpb.TokenBucketResponse, err error) { | ||
| select { | ||
| case err = <-req.done: | ||
| err = errors.WithStack(err) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| tokenBuckets = req.TokenBuckets | ||
| return | ||
| case <-req.requestCtx.Done(): | ||
| return nil, errors.WithStack(req.requestCtx.Err()) | ||
| case <-req.clientCtx.Done(): | ||
| return nil, errors.WithStack(req.clientCtx.Err()) | ||
| } | ||
| } | ||
|
|
||
| type tokenBatchController struct { | ||
| tokenRequestCh chan *tokenRequest | ||
| } | ||
|
|
||
| func newTokenBatchController(tokenRequestCh chan *tokenRequest) *tokenBatchController { | ||
| return &tokenBatchController{ | ||
| tokenRequestCh: tokenRequestCh, | ||
| } | ||
| } | ||
|
|
||
| type tokenDispatcher struct { | ||
| dispatcherCancel context.CancelFunc | ||
| tokenBatchController *tokenBatchController | ||
| } | ||
|
|
||
| type resourceManagerConnectionContext struct { | ||
| stream rmpb.ResourceManager_AcquireTokenBucketsClient | ||
| ctx context.Context | ||
| cancel context.CancelFunc | ||
| } | ||
|
|
||
| func (c *client) createTokenispatcher() { | ||
| dispatcherCtx, dispatcherCancel := context.WithCancel(c.ctx) | ||
| dispatcher := &tokenDispatcher{ | ||
| dispatcherCancel: dispatcherCancel, | ||
| tokenBatchController: newTokenBatchController( | ||
| make(chan *tokenRequest, 1)), | ||
| } | ||
| go c.handleResourceTokenDispatcher(dispatcherCtx, dispatcher.tokenBatchController) | ||
| c.tokenDispatcher = dispatcher | ||
| } | ||
|
|
||
| func (c *client) handleResourceTokenDispatcher(dispatcherCtx context.Context, tbc *tokenBatchController) { | ||
| var connection resourceManagerConnectionContext | ||
| if err := c.tryResourceManagerConnect(dispatcherCtx, &connection); err != nil { | ||
| log.Warn("get stream error", zap.Error(err)) | ||
| } | ||
|
|
||
| for { | ||
| var firstRequest *tokenRequest | ||
| select { | ||
| case <-dispatcherCtx.Done(): | ||
| return | ||
| case firstRequest = <-tbc.tokenRequestCh: | ||
| } | ||
| stream, streamCtx, cancel := connection.stream, connection.ctx, connection.cancel | ||
| if stream == nil { | ||
| c.tryResourceManagerConnect(dispatcherCtx, &connection) | ||
| firstRequest.done <- errors.Errorf("no stream") | ||
| continue | ||
| } | ||
| select { | ||
| case <-streamCtx.Done(): | ||
| log.Info("[resource_manager] resource manager stream is canceled") | ||
| cancel() | ||
| connection.stream = nil | ||
| continue | ||
| default: | ||
| } | ||
| err := c.processTokenRequests(stream, firstRequest) | ||
| if err != nil { | ||
| log.Info("processTokenRequests error", zap.Error(err)) | ||
| cancel() | ||
| connection.stream = nil | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (c *client) processTokenRequests(stream rmpb.ResourceManager_AcquireTokenBucketsClient, t *tokenRequest) error { | ||
| req := t.Requeset | ||
| if err := stream.Send(req); err != nil { | ||
| err = errors.WithStack(err) | ||
| t.done <- err | ||
| return err | ||
| } | ||
| resp, err := stream.Recv() | ||
| if err != nil { | ||
| err = errors.WithStack(err) | ||
| t.done <- err | ||
| return err | ||
| } | ||
| if resp.GetError() != nil { | ||
| return errors.Errorf("[resource_manager]" + resp.GetError().Message) | ||
| } | ||
| tokenBuckets := resp.GetResponses() | ||
| t.TokenBuckets = tokenBuckets | ||
| t.done <- nil | ||
| return nil | ||
| } | ||
|
|
||
| func (c *client) tryResourceManagerConnect(ctx context.Context, connection *resourceManagerConnectionContext) error { | ||
| var ( | ||
| err error | ||
| stream rmpb.ResourceManager_AcquireTokenBucketsClient | ||
| ) | ||
| for i := 0; i < maxRetryTimes; i++ { | ||
| cctx, cancel := context.WithCancel(ctx) | ||
| stream, err = c.resourceManagerClient().AcquireTokenBuckets(cctx) | ||
| if err == nil && stream != nil { | ||
| connection.cancel = cancel | ||
| connection.ctx = cctx | ||
| connection.stream = stream | ||
| return nil | ||
| } | ||
| cancel() | ||
| select { | ||
| case <-ctx.Done(): | ||
| return err | ||
| case <-time.After(retryInterval): | ||
| } | ||
| } | ||
| return err | ||
| } |
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