FilesExpand file tree

 main

/

java.go

Copy path

Blame

More file actions

Blame

More file actions

Latest commit

 

History

History

History

75 lines (62 loc) · 2.33 KB

 main

/

java.go

Copy path

Top

File metadata and controls

• Code
• Blame

75 lines (62 loc) · 2.33 KB

Raw

Copy raw file

Download raw file

Open symbols panel

Edit and raw actions

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

// Copyright 2020 Google LLC

//

// Licensed 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 devmode

import (

"bytes"

"path/filepath"

"strings"

"text/template"

gcp "github.com/GoogleCloudPlatform/buildpacks/pkg/gcpbuildpack"

)

var (

// JavaWatchedExtensions is the list of file extensions to be watched for changes in Dev Mode for Java.

// A change to any of those files triggers a rebuild/restart of the application.

JavaWatchedExtensions = []string{"java", "kt", "scala", "groovy", "clj"}

// buildScriptTmpl is the template for a build script that runs on each file change in dev mode.

buildScriptTmpl = template.Must(template.New("script").Parse(`#!/bin/bash

set -e

if [ ! -L {{ .dest }} ]; then

# The first time the build script runs, it only creates a symlink to the m2 repo.

# It should skip the build because the application is already built

ln -s {{ .src }} {{ .dest }}

exit

fi

# On subsequent runs, it must rebuild the application as the source will have changed.

{{ .buildCommand }}

`))

)

// JavaSyncRules is the list of SyncRules to be configured in Dev Mode for Java.

func JavaSyncRules(dest string) []SyncRule {

var rules []SyncRule

for _, ext := range JavaWatchedExtensions {

rules = append(rules, SyncRule{

Src: "**/*." + ext,

Dest: dest,

})

}

// TODO(dgageot): Also sync resources (html,css,js...).

return rules

}

// WriteBuildScript writes the build steps to a script to be run on each file change in dev mode.

func WriteBuildScript(ctx *gcp.Context, layerSrc, dest string, command []string) {

var script bytes.Buffer

buildScriptTmpl.Execute(&script, map[string]string{

"src": layerSrc,

"dest": dest,

"buildCommand": strings.Join(command, " "),

})

bin := filepath.Join(layerSrc, "bin")

ctx.MkdirAll(bin, 0755)

ctx.WriteFile(filepath.Join(bin, ".devmode_rebuild.sh"), script.Bytes(), 0744)

}