youtubebeat/vendor/github.com/elastic/beats/filebeat/fileset/flags.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 fileset
import (
"flag"
"fmt"
"strings"
"github.com/elastic/beats/libbeat/common"
)
// Modules related command line flags.
var (
modulesFlag = flag.String("modules", "", "List of enabled modules (comma separated)")
moduleOverrides = common.SettingFlag(nil, "M", "Module configuration overwrite")
)
type ModuleOverrides map[string]map[string]*common.Config // module -> fileset -> Config
// Get returns an array of configuration overrides that should be merged in order.
func (mo *ModuleOverrides) Get(module, fileset string) []*common.Config {
ret := []*common.Config{}
moduleWildcard := (*mo)["*"]["*"]
if moduleWildcard != nil {
ret = append(ret, moduleWildcard)
}
filesetWildcard := (*mo)[module]["*"]
if filesetWildcard != nil {
ret = append(ret, filesetWildcard)
}
cfg := (*mo)[module][fileset]
if cfg != nil {
ret = append(ret, cfg)
}
return ret
}
func getModulesCLIConfig() ([]string, *ModuleOverrides, error) {
modulesList := []string{}
if modulesFlag != nil {
modulesList = strings.Split(*modulesFlag, ",")
}
if moduleOverrides == nil {
return modulesList, nil, nil
}
var overrides ModuleOverrides
err := moduleOverrides.Unpack(&overrides)
if err != nil {
return []string{}, nil, fmt.Errorf("-M flags must be prefixed by the module and fileset: %v", err)
}
return modulesList, &overrides, nil
}