youtubebeat/vendor/github.com/elastic/beats/libbeat/outputs/output_reg.go

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2018-11-18 11:08:38 +01:00
// Licensed to Elasticsearch B.V. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. Elasticsearch B.V. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package outputs
import (
"fmt"
"github.com/elastic/beats/libbeat/beat"
"github.com/elastic/beats/libbeat/common"
"github.com/elastic/beats/libbeat/common/cfgwarn"
)
var outputReg = map[string]Factory{}
// Factory is used by output plugins to build an output instance
type Factory func(
beat beat.Info,
stats Observer,
cfg *common.Config) (Group, error)
// Group configures and combines multiple clients into load-balanced group of clients
// being managed by the publisher pipeline.
type Group struct {
Clients []Client
BatchSize int
Retry int
}
// RegisterType registers a new output type.
func RegisterType(name string, f Factory) {
if outputReg[name] != nil {
panic(fmt.Errorf("output type '%v' exists already", name))
}
outputReg[name] = f
}
// FindFactory finds an output type its factory if available.
func FindFactory(name string) Factory {
return outputReg[name]
}
// Load creates and configures a output Group using a configuration object..
func Load(info beat.Info, stats Observer, name string, config *common.Config) (Group, error) {
factory := FindFactory(name)
if factory == nil {
return Group{}, fmt.Errorf("output type %v undefined", name)
}
if err := cfgwarn.CheckRemoved5xSetting(config, "flush_interval"); err != nil {
return Fail(err)
}
if stats == nil {
stats = NewNilObserver()
}
return factory(info, stats, config)
}