92 lines
2.3 KiB
Go
92 lines
2.3 KiB
Go
// 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 main
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import (
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"bytes"
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"flag"
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"fmt"
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"go/format"
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"io/ioutil"
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"os"
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"path"
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"github.com/elastic/beats/libbeat/asset"
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"github.com/elastic/beats/libbeat/generator/fields"
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"github.com/elastic/beats/licenses"
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)
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func main() {
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flag.Parse()
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args := flag.Args()
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if len(args) != 1 {
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fmt.Fprintln(os.Stderr, "Module path must be set")
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os.Exit(1)
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}
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dir := args[0]
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modules, err := fields.GetModules(dir)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error fetching modules: %s\n", err)
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os.Exit(1)
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}
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for _, module := range modules {
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files, err := fields.CollectFiles(module, dir)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error fetching files for module %s: %s\n", module, err)
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os.Exit(1)
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}
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data, err := fields.GenerateFieldsYml(files)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error fetching files for module %s: %s\n", module, err)
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os.Exit(1)
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}
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encData, err := asset.EncodeData(string(data))
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error encoding the data: %s\n", err)
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os.Exit(1)
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}
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var buf bytes.Buffer
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asset.Template.Execute(&buf, asset.Data{
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License: licenses.ASL2,
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Beat: "metricbeat",
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Name: module,
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Data: encData,
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Package: module,
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})
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bs, err := format.Source(buf.Bytes())
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error creating golang file from template: %s\n", err)
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os.Exit(1)
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}
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err = ioutil.WriteFile(path.Join(dir, module, "fields.go"), bs, 0644)
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if err != nil {
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fmt.Fprintf(os.Stderr, "Error writing fields.go: %s\n", err)
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os.Exit(1)
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}
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}
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}
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