80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package integration_tests
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import (
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"net/http"
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"net/http/httptest"
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"os"
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"sync"
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"testing"
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"time"
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"github.com/ethereum-optimism/optimism/proxyd"
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"github.com/stretchr/testify/require"
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)
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func TestMaxConcurrentRPCs(t *testing.T) {
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var (
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mu sync.Mutex
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concurrentRPCs int
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maxConcurrentRPCs int
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)
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handler := func(w http.ResponseWriter, r *http.Request) {
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mu.Lock()
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concurrentRPCs++
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if maxConcurrentRPCs < concurrentRPCs {
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maxConcurrentRPCs = concurrentRPCs
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}
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mu.Unlock()
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time.Sleep(time.Second * 2)
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BatchedResponseHandler(200, goodResponse)(w, r)
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mu.Lock()
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concurrentRPCs--
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mu.Unlock()
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}
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// We don't use the MockBackend because it serializes requests to the handler
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slowBackend := httptest.NewServer(http.HandlerFunc(handler))
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defer slowBackend.Close()
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require.NoError(t, os.Setenv("GOOD_BACKEND_RPC_URL", slowBackend.URL))
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config := ReadConfig("max_rpc_conns")
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client := NewProxydClient("http://127.0.0.1:8545")
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_, shutdown, err := proxyd.Start(config)
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require.NoError(t, err)
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defer shutdown()
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type resWithCodeErr struct {
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res []byte
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code int
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err error
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}
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resCh := make(chan *resWithCodeErr)
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for i := 0; i < 3; i++ {
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go func() {
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res, code, err := client.SendRPC("eth_chainId", nil)
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resCh <- &resWithCodeErr{
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res: res,
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code: code,
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err: err,
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}
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}()
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}
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res1 := <-resCh
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res2 := <-resCh
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res3 := <-resCh
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require.NoError(t, res1.err)
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require.NoError(t, res2.err)
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require.NoError(t, res3.err)
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require.Equal(t, 200, res1.code)
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require.Equal(t, 200, res2.code)
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require.Equal(t, 200, res3.code)
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RequireEqualJSON(t, []byte(goodResponse), res1.res)
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RequireEqualJSON(t, []byte(goodResponse), res2.res)
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RequireEqualJSON(t, []byte(goodResponse), res3.res)
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require.EqualValues(t, 2, maxConcurrentRPCs)
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}
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