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.
|
|
// Use of this source code is governed by a MIT-license.
|
|
// See http://olivere.mit-license.org/license.txt for details.
|
|
|
|
package elastic
|
|
|
|
import (
|
|
"context"
|
|
"net/http"
|
|
"time"
|
|
)
|
|
|
|
// RetrierFunc specifies the signature of a Retry function, and is an adapter
|
|
// to allow the use of ordinary Retry functions. If f is a function with the
|
|
// appropriate signature, RetrierFunc(f) is a Retrier that calls f.
|
|
type RetrierFunc func(context.Context, int, *http.Request, *http.Response, error) (time.Duration, bool, error)
|
|
|
|
// Retry calls f.
|
|
func (f RetrierFunc) Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error) {
|
|
return f(ctx, retry, req, resp, err)
|
|
}
|
|
|
|
// Retrier decides whether to retry a failed HTTP request with Elasticsearch.
|
|
type Retrier interface {
|
|
// Retry is called when a request has failed. It decides whether to retry
|
|
// the call, how long to wait for the next call, or whether to return an
|
|
// error (which will be returned to the service that started the HTTP
|
|
// request in the first place).
|
|
//
|
|
// Callers may also use this to inspect the HTTP request/response and
|
|
// the error that happened. Additional data can be passed through via
|
|
// the context.
|
|
Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error)
|
|
}
|
|
|
|
// -- StopRetrier --
|
|
|
|
// StopRetrier is an implementation that does no retries.
|
|
type StopRetrier struct {
|
|
}
|
|
|
|
// NewStopRetrier returns a retrier that does no retries.
|
|
func NewStopRetrier() *StopRetrier {
|
|
return &StopRetrier{}
|
|
}
|
|
|
|
// Retry does not retry.
|
|
func (r *StopRetrier) Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error) {
|
|
return 0, false, nil
|
|
}
|
|
|
|
// -- BackoffRetrier --
|
|
|
|
// BackoffRetrier is an implementation that does nothing but return nil on Retry.
|
|
type BackoffRetrier struct {
|
|
backoff Backoff
|
|
}
|
|
|
|
// NewBackoffRetrier returns a retrier that uses the given backoff strategy.
|
|
func NewBackoffRetrier(backoff Backoff) *BackoffRetrier {
|
|
return &BackoffRetrier{backoff: backoff}
|
|
}
|
|
|
|
// Retry calls into the backoff strategy and its wait interval.
|
|
func (r *BackoffRetrier) Retry(ctx context.Context, retry int, req *http.Request, resp *http.Response, err error) (time.Duration, bool, error) {
|
|
wait, goahead := r.backoff.Next(retry)
|
|
return wait, goahead, nil
|
|
}
|