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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| /* | ||
| Copyright 2024 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 | ||
| 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 testing | ||
|
|
||
| import ( | ||
| "testing" | ||
| "time" | ||
|
|
||
| "cloud.google.com/go/internal/testutil" | ||
| "google.golang.org/api/iterator" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
|
|
||
| var defaultMaxAttempts = 10 | ||
| var defaultSleep = 10 * time.Second | ||
| var defaultRetryableCodes = map[codes.Code]bool{ | ||
| codes.Unavailable: true, | ||
| } | ||
|
|
||
| // Iterator is a wrapper interface type for iterators in the logadmin | ||
| // library that have a Next function that gets the next item/error, or returns | ||
| // nil/iterator.Done if the object has no next item. | ||
| type Iterator[T any] interface { | ||
| Next() (*T, error) | ||
| } | ||
|
|
||
| // handleError handles the given error for the retry attempt. | ||
| func handleError(r *testutil.R, err error) { | ||
| if err != nil { | ||
| s, ok := status.FromError(err) | ||
|
|
||
| // Throw a fatal error if the error is not retryable or if it cannot be converted into | ||
| // a status object. | ||
| if ok && !defaultRetryableCodes[s.Code()] { | ||
| r.Fatalf("%+v\n", err) | ||
| } else if ok { | ||
| r.Errorf("%+v\n", err) | ||
| } else { | ||
| r.Fatalf("%+v\n", err) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // Retry is a wrapper around testutil.Retry that retries the test function on Unavailable errors, otherwise, Fatalfs. | ||
| func Retry(t *testing.T, f func(r *testutil.R) error) bool { | ||
| retryFunc := func(r *testutil.R) { | ||
| err := f(r) | ||
| handleError(r, err) | ||
| } | ||
| return testutil.Retry(t, defaultMaxAttempts, defaultSleep, retryFunc) | ||
| } | ||
|
|
||
| // RetryAndExpectError retries the test function on Unavailable errors, otherwise passes | ||
| // if a different error was thrown. If no non-retryable error is returned, fails. | ||
| func RetryAndExpectError(t *testing.T, f func(r *testutil.R) error) bool { | ||
| retryFunc := func(r *testutil.R) { | ||
| err := f(r) | ||
|
|
||
| if err != nil { | ||
| s, ok := status.FromError(err) | ||
|
|
||
| // Only retry on retryable errors, otherwise pass. | ||
| if ok && defaultRetryableCodes[s.Code()] { | ||
| r.Errorf("%+v\n", err) | ||
| } | ||
| } else { | ||
| r.Fatalf("got no error, expected one") | ||
| } | ||
| } | ||
|
|
||
| return testutil.Retry(t, defaultMaxAttempts, defaultSleep, retryFunc) | ||
| } | ||
|
|
||
| // RetryIteratorNext is a wrapper around testutil.Retry that retries the given iterator's Next function | ||
| // and returns the next object, retrying if a retryable error is found. If a non-retryable error is found, fail | ||
| // the test. | ||
| func RetryIteratorNext[T any](t *testing.T, it Iterator[T]) (*T, bool) { | ||
| var next *T | ||
| var err error | ||
| retryFunc := func(r *testutil.R) { | ||
| next, err = it.Next() | ||
| if err != nil { | ||
| if err == iterator.Done { | ||
| return | ||
| } | ||
|
|
||
| handleError(r, err) | ||
| } | ||
| } | ||
| testutil.Retry(t, defaultMaxAttempts, defaultSleep, retryFunc) | ||
| if err == iterator.Done { | ||
| return nil, true | ||
| } | ||
| return next, false | ||
| } |
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