mirror of https://github.com/tikv/client-go.git
99 lines
3.0 KiB
Go
99 lines
3.0 KiB
Go
// Copyright 2021 TiKV Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package client
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import (
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"context"
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"fmt"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/tikv/client-go/v2/tikvrpc"
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"github.com/tikv/client-go/v2/tikvrpc/interceptor"
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)
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type emptyClient struct{}
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func (c emptyClient) SendRequest(ctx context.Context, addr string, req *tikvrpc.Request, timeout time.Duration) (*tikvrpc.Response, error) {
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return nil, nil
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}
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func (c emptyClient) Close() error {
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return nil
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}
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func (c emptyClient) CloseAddr(addr string) error {
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return nil
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}
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func (c emptyClient) SetEventListener(listener ClientEventListener) {}
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func TestInterceptedClient(t *testing.T) {
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executed := false
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client := NewInterceptedClient(emptyClient{})
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ctx := interceptor.WithRPCInterceptor(context.Background(), interceptor.NewRPCInterceptor("test", func(next interceptor.RPCInterceptorFunc) interceptor.RPCInterceptorFunc {
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return func(target string, req *tikvrpc.Request) (*tikvrpc.Response, error) {
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executed = true
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return next(target, req)
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}
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}))
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_, _ = client.SendRequest(ctx, "", &tikvrpc.Request{}, 0)
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assert.True(t, executed)
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}
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func TestAppendChainedInterceptor(t *testing.T) {
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executed := make([]int, 0, 10)
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client := NewInterceptedClient(emptyClient{})
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mkInterceptorFn := func(i int) interceptor.RPCInterceptor {
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return interceptor.NewRPCInterceptor(fmt.Sprintf("%d", i), func(next interceptor.RPCInterceptorFunc) interceptor.RPCInterceptorFunc {
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return func(target string, req *tikvrpc.Request) (*tikvrpc.Response, error) {
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executed = append(executed, i)
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return next(target, req)
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}
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})
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}
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checkChained := func(it interceptor.RPCInterceptor, count int, expected []int) {
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chain, ok := it.(*interceptor.RPCInterceptorChain)
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assert.True(t, ok)
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assert.Equal(t, chain.Len(), count)
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executed = executed[:0]
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ctx := interceptor.WithRPCInterceptor(context.Background(), it)
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_, _ = client.SendRequest(ctx, "", &tikvrpc.Request{}, 0)
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assert.Equal(t, executed, expected)
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}
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it := mkInterceptorFn(0)
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expected := []int{0}
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for i := 1; i < 3; i++ {
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it = interceptor.ChainRPCInterceptors(it, mkInterceptorFn(i))
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expected = append(expected, i)
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checkChained(it, i+1, expected)
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}
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it2 := interceptor.ChainRPCInterceptors(mkInterceptorFn(3), mkInterceptorFn(4))
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checkChained(it2, 2, []int{3, 4})
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chain := interceptor.ChainRPCInterceptors(it, it2)
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checkChained(chain, 5, []int{0, 1, 2, 3, 4})
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// add duplciated
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chain = interceptor.ChainRPCInterceptors(chain, mkInterceptorFn(1))
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checkChained(chain, 5, []int{0, 2, 3, 4, 1})
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}
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