mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-16 09:15:26 +01:00
106 lines
3.1 KiB
Go
106 lines
3.1 KiB
Go
// Copyright 2014 Google LLC
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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 storage
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import (
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"context"
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"io"
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"net"
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"net/url"
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"strings"
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"cloud.google.com/go/internal"
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gax "github.com/googleapis/gax-go/v2"
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"golang.org/x/xerrors"
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"google.golang.org/api/googleapi"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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)
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var defaultRetry *retryConfig = &retryConfig{}
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// run determines whether a retry is necessary based on the config and
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// idempotency information. It then calls the function with or without retries
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// as appropriate, using the configured settings.
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func run(ctx context.Context, call func() error, retry *retryConfig, isIdempotent bool) error {
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if retry == nil {
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retry = defaultRetry
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}
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if (retry.policy == RetryIdempotent && !isIdempotent) || retry.policy == RetryNever {
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return call()
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}
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bo := gax.Backoff{}
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if retry.backoff != nil {
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bo.Multiplier = retry.backoff.Multiplier
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bo.Initial = retry.backoff.Initial
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bo.Max = retry.backoff.Max
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}
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var errorFunc func(err error) bool = shouldRetry
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if retry.shouldRetry != nil {
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errorFunc = retry.shouldRetry
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}
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return internal.Retry(ctx, bo, func() (stop bool, err error) {
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err = call()
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return !errorFunc(err), err
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})
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}
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func shouldRetry(err error) bool {
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if err == nil {
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return false
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}
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if xerrors.Is(err, io.ErrUnexpectedEOF) {
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return true
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}
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switch e := err.(type) {
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case *net.OpError:
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if strings.Contains(e.Error(), "use of closed network connection") {
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// TODO: check against net.ErrClosed (go 1.16+) instead of string
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return true
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}
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case *googleapi.Error:
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// Retry on 408, 429, and 5xx, according to
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// https://cloud.google.com/storage/docs/exponential-backoff.
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return e.Code == 408 || e.Code == 429 || (e.Code >= 500 && e.Code < 600)
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case *url.Error:
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// Retry socket-level errors ECONNREFUSED and ECONNRESET (from syscall).
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// Unfortunately the error type is unexported, so we resort to string
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// matching.
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retriable := []string{"connection refused", "connection reset"}
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for _, s := range retriable {
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if strings.Contains(e.Error(), s) {
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return true
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}
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}
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case interface{ Temporary() bool }:
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if e.Temporary() {
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return true
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}
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}
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// HTTP 429, 502, 503, and 504 all map to gRPC UNAVAILABLE per
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// https://grpc.github.io/grpc/core/md_doc_http-grpc-status-mapping.html.
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//
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// This is only necessary for the experimental gRPC-based media operations.
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if st, ok := status.FromError(err); ok && st.Code() == codes.Unavailable {
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return true
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}
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// Unwrap is only supported in go1.13.x+
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if e, ok := err.(interface{ Unwrap() error }); ok {
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return shouldRetry(e.Unwrap())
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}
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return false
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}
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