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Signed-off-by: Florent Poinsard <florent.poinsard@outlook.fr>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,51 +1,75 @@ | ||
| /* | ||
| Copyright 2024 The Vitess Authors. | ||
| 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 s3backupstorage | ||
|
|
||
| import ( | ||
| "context" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/aws/aws-sdk-go/aws/awserr" | ||
| "github.com/aws/aws-sdk-go/aws/request" | ||
| "github.com/aws/aws-sdk-go-v2/aws" | ||
| ) | ||
|
|
||
| // ClosedConnectionRetryer implements the aws request.Retryer interface | ||
| // ClosedConnectionRetryer implements the aws.Retryer interface | ||
| // and is used to retry closed connection errors during MultipartUpload | ||
| // operations. | ||
| // operations. It is a simplified version of the RetryableConnectionError | ||
| // implementation, which always retry on any type of connection error. | ||
| type ClosedConnectionRetryer struct { | ||
| awsRetryer request.Retryer | ||
| awsRetryer aws.Retryer | ||
| } | ||
|
|
||
| // RetryRules is part of the Retryer interface. It defers to the underlying | ||
| // aws Retryer to compute backoff rules. | ||
| func (retryer *ClosedConnectionRetryer) RetryRules(r *request.Request) time.Duration { | ||
| return retryer.awsRetryer.RetryRules(r) | ||
| } | ||
|
|
||
| // ShouldRetry is part of the Retryer interface. It retries on errors that occur | ||
| // due to a closed network connection, and then falls back to the underlying aws | ||
| // Retryer for checking additional retry conditions. | ||
| func (retryer *ClosedConnectionRetryer) ShouldRetry(r *request.Request) bool { | ||
| if retryer.MaxRetries() == 0 { | ||
| // IsErrorRetryable returns true if the error should be retried. We first try | ||
| // to see if the error is due to the use of a closed connection, if it is, | ||
| // we retry, and if not, we default to what the aws.Retryer would do. | ||
| func (retryer *ClosedConnectionRetryer) IsErrorRetryable(err error) bool { | ||
| if retryer.MaxAttempts() == 0 { | ||
| return false | ||
| } | ||
|
|
||
| if r.Retryable != nil { | ||
| return *r.Retryable | ||
| } | ||
|
|
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| if r.Error != nil { | ||
| if awsErr, ok := r.Error.(awserr.Error); ok { | ||
| if strings.Contains(awsErr.Error(), "use of closed network connection") { | ||
| return true | ||
| } | ||
| if err != nil { | ||
| if strings.Contains(err.Error(), "use of closed network connection") { | ||
| return true | ||
| } | ||
| } | ||
|
|
||
| return retryer.awsRetryer.ShouldRetry(r) | ||
| return retryer.awsRetryer.IsErrorRetryable(err) | ||
| } | ||
|
|
||
| // MaxAttempts returns the maximum number of attempts that can be made for | ||
| // an attempt before failing. A value of 0 implies that the attempt should | ||
| // be retried until it succeeds if the errors are retryable. | ||
| func (retryer *ClosedConnectionRetryer) MaxAttempts() int { | ||
| return retryer.awsRetryer.MaxAttempts() | ||
| } | ||
|
|
||
| // RetryDelay returns the delay that should be used before retrying the | ||
| // attempt. Will return error if the delay could not be determined. | ||
| func (retryer *ClosedConnectionRetryer) RetryDelay(attempt int, opErr error) (time.Duration, error) { | ||
| return retryer.awsRetryer.RetryDelay(attempt, opErr) | ||
| } | ||
|
|
||
| // GetRetryToken attempts to deduct the retry cost from the retry token pool. | ||
| // Returning the token release function, or error. | ||
| func (retryer *ClosedConnectionRetryer) GetRetryToken(ctx context.Context, opErr error) (releaseToken func(error) error, err error) { | ||
| return retryer.awsRetryer.GetRetryToken(ctx, opErr) | ||
| } | ||
|
|
||
| // MaxRetries is part of the Retryer interface. It defers to the | ||
| // underlying aws Retryer for the max number of retries. | ||
| func (retryer *ClosedConnectionRetryer) MaxRetries() int { | ||
| return retryer.awsRetryer.MaxRetries() | ||
| // GetInitialToken returns the initial attempt token that can increment the | ||
| // retry token pool if the attempt is successful. | ||
| func (retryer *ClosedConnectionRetryer) GetInitialToken() (releaseToken func(error) error) { | ||
| return retryer.awsRetryer.GetInitialToken() | ||
| } |
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