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c538bfbc8f
create sub packages delete unused code delete code from not use command cmdRouter,cmdTest, cmdRundocs make command plugins check with gosimple,staticcheck,go vet,unused,unconvert
135 lines
3.5 KiB
Go
135 lines
3.5 KiB
Go
// Copyright 2016 bee authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// 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, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package dockerize
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import (
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"flag"
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"os"
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"path"
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"path/filepath"
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"strings"
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"text/template"
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"github.com/beego/bee/cmd/commands"
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"github.com/beego/bee/cmd/commands/version"
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beeLogger "github.com/beego/bee/logger"
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"github.com/beego/bee/utils"
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)
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const dockerBuildTemplate = `FROM {{.BaseImage}}
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# Godep for vendoring
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RUN go get github.com/tools/godep
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# Recompile the standard library without CGO
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RUN CGO_ENABLED=0 go install -a std
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ENV APP_DIR $GOPATH{{.Appdir}}
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RUN mkdir -p $APP_DIR
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# Set the entrypoint
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ENTRYPOINT $APP_DIR/{{.Entrypoint}}
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ADD . $APP_DIR
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# Compile the binary and statically link
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RUN cd $APP_DIR
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RUN CGO_ENABLED=0 godep go build -ldflags '-d -w -s'
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EXPOSE {{.Expose}}
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`
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// Dockerfile holds the information about the Docker container.
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type Dockerfile struct {
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BaseImage string
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Appdir string
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Entrypoint string
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Expose string
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}
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var CmdDockerize = &commands.Command{
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CustomFlags: true,
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UsageLine: "dockerize",
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Short: "Generates a Dockerfile for your Beego application",
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Long: `Dockerize generates a Dockerfile for your Beego Web Application.
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The Dockerfile will compile, get the dependencies with {{"godep"|bold}}, and set the entrypoint.
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{{"Example:"|bold}}
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$ bee dockerize -expose="3000,80,25"
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`,
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PreRun: func(cmd *commands.Command, args []string) { version.ShowShortVersionBanner() },
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Run: dockerizeApp,
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}
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var (
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expose string
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baseImage string
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)
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func init() {
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fs := flag.NewFlagSet("dockerize", flag.ContinueOnError)
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fs.StringVar(&baseImage, "image", "library/golang", "Set the base image of the Docker container.")
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fs.StringVar(&expose, "expose", "8080", "Port(s) to expose in the Docker container.")
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CmdDockerize.Flag = *fs
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commands.AvailableCommands = append(commands.AvailableCommands, CmdDockerize)
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}
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func dockerizeApp(cmd *commands.Command, args []string) int {
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if err := cmd.Flag.Parse(args); err != nil {
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beeLogger.Log.Fatalf("Error parsing flags: %v", err.Error())
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}
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beeLogger.Log.Info("Generating Dockerfile...")
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gopath := os.Getenv("GOPATH")
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dir, err := filepath.Abs(".")
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if err != nil {
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beeLogger.Log.Error(err.Error())
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}
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appdir := strings.Replace(dir, gopath, "", 1)
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// In case of multiple ports to expose inside the container,
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// replace all the commas with whitespaces.
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// See the verb EXPOSE in the Docker documentation.
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if strings.Contains(expose, ",") {
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expose = strings.Replace(expose, ",", " ", -1)
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}
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_, entrypoint := path.Split(appdir)
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dockerfile := Dockerfile{
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BaseImage: baseImage,
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Appdir: appdir,
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Entrypoint: entrypoint,
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Expose: expose,
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}
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generateDockerfile(dockerfile)
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return 0
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}
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func generateDockerfile(df Dockerfile) {
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t := template.Must(template.New("dockerBuildTemplate").Parse(dockerBuildTemplate)).Funcs(utils.BeeFuncMap())
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f, err := os.Create("Dockerfile")
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if err != nil {
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beeLogger.Log.Fatalf("Error writing Dockerfile: %v", err.Error())
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}
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defer utils.CloseFile(f)
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t.Execute(f, df)
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beeLogger.Log.Success("Dockerfile generated.")
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}
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