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177 lines
4.5 KiB
177 lines
4.5 KiB
// Copyright 2018 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package main
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import (
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"context"
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"encoding/json"
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"flag"
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"fmt"
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"log"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"text/template"
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"time"
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"github.com/BurntSushi/toml"
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)
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var (
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pkgDir string
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outDir string
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)
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const codeTemplate = `
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package main
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import (
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"github.com/pingcap/tidb/plugin"
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"github.com/pingcap/tidb/sessionctx/variable"
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)
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func PluginManifest() *plugin.Manifest {
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return plugin.ExportManifest(&plugin.{{.kind}}Manifest{
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Manifest: plugin.Manifest{
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Kind: plugin.{{.kind}},
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Name: "{{.name}}",
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Description: "{{.description}}",
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Version: {{.version}},
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RequireVersion: map[string]uint16{},
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License: "{{.license}}",
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BuildTime: "{{.buildTime}}",
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SysVars: map[string]*variable.SysVar{
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{{range .sysVars}}
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"{{.name}}": {
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Scope: variable.Scope{{.scope}},
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Name: "{{.name}}",
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Value: "{{.value}}",
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},
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{{end}}
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},
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{{if .validate }}
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Validate: {{.validate}},
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{{end}}
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{{if .onInit }}
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OnInit: {{.onInit}},
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{{end}}
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{{if .onShutdown }}
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OnShutdown: {{.onShutdown}},
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{{end}}
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{{if .onFlush }}
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OnFlush: {{.onFlush}},
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{{end}}
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},
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{{range .export}}
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{{.extPoint}}: {{.impl}},
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{{end}}
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})
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}
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`
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func init() {
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flag.StringVar(&pkgDir, "pkg-dir", "", "plugin package folder path")
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flag.StringVar(&outDir, "out-dir", "", "plugin packaged folder path")
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flag.Usage = usage
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}
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func usage() {
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log.Printf("Usage: %s --pkg-dir [plugin source pkg folder] --out-dir [plugin packaged folder path]\n", filepath.Base(os.Args[0]))
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flag.PrintDefaults()
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os.Exit(1)
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}
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func main() {
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flag.Parse()
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if pkgDir == "" || outDir == "" {
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flag.Usage()
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}
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pkgDir, err := filepath.Abs(pkgDir)
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if err != nil {
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log.Printf("unable to resolve absolute representation of package path , %+v\n", err)
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flag.Usage()
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}
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outDir, err := filepath.Abs(outDir)
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if err != nil {
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log.Printf("unable to resolve absolute representation of output path , %+v\n", err)
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flag.Usage()
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}
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var manifest map[string]interface{}
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_, err = toml.DecodeFile(filepath.Join(pkgDir, "manifest.toml"), &manifest)
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if err != nil {
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log.Printf("read pkg %s's manifest failure, %+v\n", pkgDir, err)
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os.Exit(1)
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}
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manifest["buildTime"] = time.Now().String()
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pluginName := manifest["name"].(string)
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if strings.Contains(pluginName, "-") {
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log.Printf("plugin name should not contain '-'\n")
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os.Exit(1)
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}
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if pluginName != filepath.Base(pkgDir) {
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log.Printf("plugin package must be same with plugin name in manifest file\n")
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os.Exit(1)
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}
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version := manifest["version"].(string)
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tmpl, err := template.New("gen-plugin").Parse(codeTemplate)
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if err != nil {
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log.Printf("generate code failure during parse template, %+v\n", err)
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os.Exit(1)
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}
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genFileName := filepath.Join(pkgDir, filepath.Base(pkgDir)+".gen.go")
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genFile, err := os.OpenFile(genFileName, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
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if err != nil {
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log.Printf("generate code failure during prepare output file, %+v\n", err)
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os.Exit(1)
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}
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defer func() {
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err1 := os.Remove(genFileName)
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if err1 != nil {
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log.Printf("remove tmp file %s failure, please clean up manually at %v", genFileName, err1)
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}
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}()
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err = tmpl.Execute(genFile, manifest)
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if err != nil {
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log.Printf("generate code failure during generating code, %+v\n", err)
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os.Exit(1)
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}
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outputFile := filepath.Join(outDir, pluginName+"-"+version+".so")
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ctx := context.Background()
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buildCmd := exec.CommandContext(ctx, "go", "build",
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"-buildmode=plugin",
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"-o", outputFile, pkgDir)
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buildCmd.Dir = pkgDir
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buildCmd.Stderr = os.Stderr
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buildCmd.Stdout = os.Stdout
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buildCmd.Env = append(os.Environ(), "GO111MODULE=on")
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err = buildCmd.Run()
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if err != nil {
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log.Printf("compile plugin source code failure, %+v\n", err)
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os.Exit(1)
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}
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fmt.Printf(`Package "%s" as plugin "%s" success.`+"\nManifest:\n", pkgDir, outputFile)
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encoder := json.NewEncoder(os.Stdout)
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encoder.SetIndent(" ", "\t")
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err = encoder.Encode(manifest)
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if err != nil {
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log.Printf("print manifest detail failure, err: %v", err)
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}
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}
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