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- // Licensed to the LF AI & Data foundation under one
- // or more contributor license agreements. See the NOTICE file
- // distributed with this work for additional information
- // regarding copyright ownership. The ASF licenses this file
- // to you 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 mock
- import (
- "context"
- "fmt"
- "sync"
- "go.uber.org/zap"
- "google.golang.org/grpc"
- "github.com/milvus-io/milvus/internal/util/sessionutil"
- "github.com/milvus-io/milvus/pkg/log"
- "github.com/milvus-io/milvus/pkg/tracer"
- "github.com/milvus-io/milvus/pkg/util/funcutil"
- "github.com/milvus-io/milvus/pkg/util/generic"
- "github.com/milvus-io/milvus/pkg/util/retry"
- )
- type GRPCClientBase[T any] struct {
- getAddrFunc func() (string, error)
- newGrpcClient func(cc *grpc.ClientConn) T
- grpcClient T
- conn *grpc.ClientConn
- grpcClientMtx sync.RWMutex
- GetGrpcClientErr error
- role string
- nodeID int64
- sess *sessionutil.Session
- }
- func (c *GRPCClientBase[T]) SetGetAddrFunc(f func() (string, error)) {
- c.getAddrFunc = f
- }
- func (c *GRPCClientBase[T]) GetRole() string {
- return c.role
- }
- func (c *GRPCClientBase[T]) SetRole(role string) {
- c.role = role
- }
- func (c *GRPCClientBase[T]) EnableEncryption() {
- }
- func (c *GRPCClientBase[T]) SetNewGrpcClientFunc(f func(cc *grpc.ClientConn) T) {
- c.newGrpcClient = f
- }
- func (c *GRPCClientBase[T]) GetGrpcClient(ctx context.Context) (T, error) {
- c.grpcClientMtx.RLock()
- defer c.grpcClientMtx.RUnlock()
- c.connect(ctx)
- return c.grpcClient, c.GetGrpcClientErr
- }
- func (c *GRPCClientBase[T]) resetConnection(client T) {
- c.grpcClientMtx.Lock()
- defer c.grpcClientMtx.Unlock()
- if generic.IsZero(c.grpcClient) {
- return
- }
- if !generic.Equal(client, c.grpcClient) {
- return
- }
- if c.conn != nil {
- _ = c.conn.Close()
- }
- c.conn = nil
- c.grpcClient = generic.Zero[T]()
- }
- func (c *GRPCClientBase[T]) connect(ctx context.Context, retryOptions ...retry.Option) error {
- c.grpcClient = c.newGrpcClient(c.conn)
- return nil
- }
- func (c *GRPCClientBase[T]) callOnce(ctx context.Context, caller func(client T) (any, error)) (any, error) {
- client, err := c.GetGrpcClient(ctx)
- if err != nil {
- return nil, err
- }
- ret, err2 := caller(client)
- if err2 == nil {
- return ret, nil
- }
- if err2 == context.Canceled || err2 == context.DeadlineExceeded {
- return nil, err2
- }
- c.resetConnection(client)
- return ret, err2
- }
- func (c *GRPCClientBase[T]) Call(ctx context.Context, caller func(client T) (any, error)) (any, error) {
- if !funcutil.CheckCtxValid(ctx) {
- return nil, ctx.Err()
- }
- ret, err := c.callOnce(ctx, caller)
- if err != nil {
- traceErr := fmt.Errorf("err: %s\n, %s", err.Error(), tracer.StackTrace())
- log.Error("GRPCClientBase[T] Call grpc first call get error ", zap.Error(traceErr))
- return nil, traceErr
- }
- return ret, err
- }
- func (c *GRPCClientBase[T]) ReCall(ctx context.Context, caller func(client T) (any, error)) (any, error) {
- // omit ctx check in mock first time to let each function has failed context
- ret, err := c.callOnce(ctx, caller)
- if err == nil {
- return ret, nil
- }
- traceErr := fmt.Errorf("err: %s\n, %s", err.Error(), tracer.StackTrace())
- log.Warn("GRPCClientBase[T] client grpc first call get error ", zap.Error(traceErr))
- if !funcutil.CheckCtxValid(ctx) {
- return nil, ctx.Err()
- }
- ret, err = c.callOnce(ctx, caller)
- if err != nil {
- traceErr = fmt.Errorf("err: %s\n, %s", err.Error(), tracer.StackTrace())
- log.Error("GRPCClientBase[T] client grpc second call get error ", zap.Error(traceErr))
- return nil, traceErr
- }
- return ret, err
- }
- func (c *GRPCClientBase[T]) Close() error {
- c.grpcClientMtx.Lock()
- defer c.grpcClientMtx.Unlock()
- if c.conn != nil {
- return c.conn.Close()
- }
- return nil
- }
- func (c *GRPCClientBase[T]) GetNodeID() int64 {
- return c.nodeID
- }
- func (c *GRPCClientBase[T]) SetNodeID(nodeID int64) {
- c.nodeID = nodeID
- }
- func (c *GRPCClientBase[T]) SetSession(sess *sessionutil.Session) {
- c.sess = sess
- }
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