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author | George Goldberg <george@gberg.me> | 2017-05-09 14:13:24 +0100 |
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committer | Joram Wilander <jwawilander@gmail.com> | 2017-05-09 08:13:24 -0500 |
commit | 622998add12734a6c2b5d79918338a4d6dca7ce6 (patch) | |
tree | 198d507eb04c5684d5b191b17ed957f02f2df6ed /vendor/gopkg.in/olivere/elastic.v5/retrier.go | |
parent | b25021b9129820147bf596b834d438ef218acf28 (diff) | |
download | chat-622998add12734a6c2b5d79918338a4d6dca7ce6.tar.gz chat-622998add12734a6c2b5d79918338a4d6dca7ce6.tar.bz2 chat-622998add12734a6c2b5d79918338a4d6dca7ce6.zip |
PLT-6398: Add dependency on go elastic search library. (#6340)
Diffstat (limited to 'vendor/gopkg.in/olivere/elastic.v5/retrier.go')
-rw-r--r-- | vendor/gopkg.in/olivere/elastic.v5/retrier.go | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/vendor/gopkg.in/olivere/elastic.v5/retrier.go b/vendor/gopkg.in/olivere/elastic.v5/retrier.go new file mode 100644 index 000000000..46d3adfcb --- /dev/null +++ b/vendor/gopkg.in/olivere/elastic.v5/retrier.go @@ -0,0 +1,61 @@ +// 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. +type RetrierFunc func(context.Context, int, *http.Request, *http.Response, error) (time.Duration, bool, error) + +// 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 +} |