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https://github.com/go-gitea/gitea
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5dbf36f356
* Issue search support elasticsearch * Fix lint * Add indexer name on app.ini * add a warnning on SearchIssuesByKeyword * improve code
69 lines
2.4 KiB
Go
69 lines
2.4 KiB
Go
// Copyright 2012-present Oliver Eilhard. All rights reserved.
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// Use of this source code is governed by a MIT-license.
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// See http://olivere.mit-license.org/license.txt for details.
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package elastic
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import (
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"context"
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"net/http"
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"time"
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)
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// RetrierFunc specifies the signature of a Retry function, and is an adapter
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// to allow the use of ordinary Retry functions. If f is a function with the
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// appropriate signature, RetrierFunc(f) is a Retrier that calls f.
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type RetrierFunc func(context.Context, int, *http.Request, *http.Response, error) (time.Duration, bool, error)
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// Retry calls f.
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func (f RetrierFunc) Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error) {
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return f(ctx, retry, req, resp, err)
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}
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// Retrier decides whether to retry a failed HTTP request with Elasticsearch.
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type Retrier interface {
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// Retry is called when a request has failed. It decides whether to retry
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// the call, how long to wait for the next call, or whether to return an
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// error (which will be returned to the service that started the HTTP
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// request in the first place).
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//
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// Callers may also use this to inspect the HTTP request/response and
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// the error that happened. Additional data can be passed through via
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// the context.
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Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error)
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}
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// -- StopRetrier --
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// StopRetrier is an implementation that does no retries.
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type StopRetrier struct {
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}
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// NewStopRetrier returns a retrier that does no retries.
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func NewStopRetrier() *StopRetrier {
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return &StopRetrier{}
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}
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// Retry does not retry.
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func (r *StopRetrier) Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error) {
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return 0, false, nil
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}
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// -- BackoffRetrier --
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// BackoffRetrier is an implementation that does nothing but return nil on Retry.
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type BackoffRetrier struct {
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backoff Backoff
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}
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// NewBackoffRetrier returns a retrier that uses the given backoff strategy.
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func NewBackoffRetrier(backoff Backoff) *BackoffRetrier {
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return &BackoffRetrier{backoff: backoff}
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}
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// Retry calls into the backoff strategy and its wait interval.
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func (r *BackoffRetrier) Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error) {
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wait, goahead := r.backoff.Next(retry)
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return wait, goahead, nil
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}
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