84 lines
2.1 KiB
Go
84 lines
2.1 KiB
Go
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// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package outputs
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import (
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"errors"
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"time"
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"github.com/elastic/beats/libbeat/common"
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"github.com/elastic/beats/libbeat/publisher"
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"github.com/elastic/beats/libbeat/testing"
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)
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type backoffClient struct {
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client NetworkClient
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done chan struct{}
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backoff *common.Backoff
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}
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// WithBackoff wraps a NetworkClient, adding exponential backoff support to a network client if connection/publishing failed.
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func WithBackoff(client NetworkClient, init, max time.Duration) NetworkClient {
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done := make(chan struct{})
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backoff := common.NewBackoff(done, init, max)
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return &backoffClient{
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client: client,
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done: done,
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backoff: backoff,
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}
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}
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func (b *backoffClient) Connect() error {
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err := b.client.Connect()
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b.backoff.WaitOnError(err)
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return err
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}
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func (b *backoffClient) Close() error {
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err := b.client.Close()
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close(b.done)
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return err
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}
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func (b *backoffClient) Publish(batch publisher.Batch) error {
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err := b.client.Publish(batch)
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if err != nil {
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b.client.Close()
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}
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b.backoff.WaitOnError(err)
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return err
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}
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func (b *backoffClient) Client() NetworkClient {
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return b.client
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}
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func (b *backoffClient) Test(d testing.Driver) {
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c, ok := b.client.(testing.Testable)
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if !ok {
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d.Fatal("output", errors.New("client doesn't support testing"))
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}
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c.Test(d)
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}
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func (b *backoffClient) String() string {
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return "backoff(" + b.client.String() + ")"
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}
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