53 lines
1.6 KiB
Go
53 lines
1.6 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 "github.com/elastic/beats/libbeat/common"
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// ReadHostList reads a list of hosts to connect to from an configuration
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// object. If the `workers` settings is > 1, each host is duplicated in the final
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// host list by the number of `workers`.
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func ReadHostList(cfg *common.Config) ([]string, error) {
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config := struct {
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Hosts []string `config:"hosts" validate:"required"`
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Worker int `config:"worker" validate:"min=1"`
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}{
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Worker: 1,
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}
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err := cfg.Unpack(&config)
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if err != nil {
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return nil, err
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}
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lst := config.Hosts
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if len(lst) == 0 || config.Worker <= 1 {
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return lst, nil
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}
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// duplicate entries config.Workers times
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hosts := make([]string, 0, len(lst)*config.Worker)
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for _, entry := range lst {
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for i := 0; i < config.Worker; i++ {
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hosts = append(hosts, entry)
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}
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}
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return hosts, nil
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}
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