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retry_test.go
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retry_test.go
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// Copyright 2022 Google LLC
//
// 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
//
// https://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 managedwriter
import (
"context"
"fmt"
"io"
"testing"
"github.com/googleapis/gax-go/v2/apierror"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
func TestManagedStream_AppendErrorRetries(t *testing.T) {
testCases := []struct {
err error
attemptCount int
want bool
}{
{
err: nil,
want: false,
},
{
err: fmt.Errorf("random error"),
want: false,
},
{
err: io.EOF,
want: true,
},
{
err: io.EOF,
attemptCount: 4,
want: false,
},
{
err: status.Error(codes.Unavailable, "nope"),
want: true,
},
{
err: status.Error(codes.ResourceExhausted, "out of gas"),
want: false,
},
{
err: status.Error(codes.ResourceExhausted, "Exceeds 'AppendRows throughput' quota for some reason"),
want: true,
},
{
err: context.Canceled,
want: false,
},
}
retry := newStatelessRetryer()
for _, tc := range testCases {
if _, got := retry.Retry(tc.err, tc.attemptCount); got != tc.want {
t.Errorf("got %t, want %t for error: %+v", got, tc.want, tc.err)
}
}
}
func TestManagedStream_ShouldReconnect(t *testing.T) {
testCases := []struct {
err error
want bool
}{
{
err: fmt.Errorf("random error"),
want: false,
},
{
err: io.EOF,
want: true,
},
{
err: status.Error(codes.Unavailable, "the connection is draining"),
want: true,
},
{
err: status.Error(codes.ResourceExhausted, "oof"), // may just be pushback
want: false,
},
{
err: status.Error(codes.Canceled, "blah"),
want: true,
},
{
err: status.Error(codes.Aborted, "connection has been idle too long"),
want: true,
},
{
err: status.Error(codes.DeadlineExceeded, "blah"), // possibly bad backend, reconnect to speed recovery.
want: true,
},
{
err: func() error {
// wrap the underlying error in a gax apierror
ai, _ := apierror.FromError(status.Error(codes.Unavailable, "the connection is draining"))
return ai
}(),
want: true,
},
}
for _, tc := range testCases {
if got := shouldReconnect(tc.err); got != tc.want {
t.Errorf("got %t, want %t for error: %+v", got, tc.want, tc.err)
}
}
}