mirror of
https://github.com/c9s/bbgo.git
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407a533659
https://github.com/golang/go/issues/13560 Generated files are marked by a line of text that matches the regular expression, in Go syntax: ^// Code generated .* DO NOT EDIT\.$ The .* means the tool can put whatever folderol it wants in there, but the comment must be a single line and must start with Code generated and end with DO NOT EDIT., with a period.
135 lines
3.0 KiB
Go
135 lines
3.0 KiB
Go
package bbgo
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import (
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"bytes"
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"text/template"
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"github.com/pkg/errors"
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"github.com/sirupsen/logrus"
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)
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var wrapperTemplate = template.Must(template.New("main").Parse(`// Code generated by bbgo; DO NOT EDIT.
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package main
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import (
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"github.com/c9s/bbgo/pkg/bbgo"
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"github.com/c9s/bbgo/pkg/cmd"
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{{- range .Imports }}
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_ "{{ . }}"
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{{- end }}
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)
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func init() {
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bbgo.SetWrapperBinary()
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}
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func main() {
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cmd.Execute()
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}
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`))
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func generateRunFile(filepath string, config *Config, imports []string) error {
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var buf = bytes.NewBuffer(nil)
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if err := wrapperTemplate.Execute(buf, struct {
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Config *Config
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Imports []string
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}{
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Config: config,
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Imports: imports,
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}); err != nil {
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return err
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}
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return ioutil.WriteFile(filepath, buf.Bytes(), 0644)
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}
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func compilePackage(packageDir string, userConfig *Config, imports []string) error {
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if _, err := os.Stat(packageDir); os.IsNotExist(err) {
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if err := os.MkdirAll(packageDir, 0777); err != nil {
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return errors.Wrapf(err, "can not create wrapper package directory: %s", packageDir)
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}
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}
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mainFile := filepath.Join(packageDir, "main.go")
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if err := generateRunFile(mainFile, userConfig, imports); err != nil {
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return errors.Wrap(err, "compile error")
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}
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return nil
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}
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func Build(ctx context.Context, userConfig *Config, targetConfig BuildTargetConfig) (string, error) {
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// combine global imports and target imports
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imports := append(userConfig.Build.Imports, targetConfig.Imports...)
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buildDir := userConfig.Build.BuildDir
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if len(buildDir) == 0 {
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buildDir = "build"
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}
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packageDir, err := ioutil.TempDir(buildDir, "bbgow-") // with prefix bbgow
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if err != nil {
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return "", err
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}
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if err := compilePackage(packageDir, userConfig, imports); err != nil {
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return "", err
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}
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cwd, err := os.Getwd()
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if err != nil {
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return "", err
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}
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var buildEnvs []string
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if targetConfig.OS != runtime.GOOS {
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buildEnvs = append(buildEnvs, "GOOS="+targetConfig.OS)
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}
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if targetConfig.Arch != runtime.GOARCH {
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buildEnvs = append(buildEnvs, "GOARCH="+targetConfig.Arch)
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}
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buildTarget := filepath.Join(cwd, packageDir)
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binary := targetConfig.Name
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if len(binary) == 0 {
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binary = fmt.Sprintf("bbgow-%s-%s", targetConfig.OS, targetConfig.Arch)
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}
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output := filepath.Join(buildDir, binary)
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args := []string{"build", "-tags", "wrapper", "-o", output, buildTarget}
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logrus.Debugf("building binary %s from %s: go %v", output, buildTarget, args)
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buildCmd := exec.CommandContext(ctx, "go", args...)
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buildCmd.Env = append(os.Environ(), buildEnvs...)
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buildCmd.Stdout = os.Stdout
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buildCmd.Stderr = os.Stderr
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if err := buildCmd.Run(); err != nil {
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return output, err
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}
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return output, os.RemoveAll(packageDir)
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}
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func BuildTarget(ctx context.Context, userConfig *Config, target BuildTargetConfig) (string, error) {
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buildDir := userConfig.Build.BuildDir
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if len(buildDir) == 0 {
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buildDir = "build"
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}
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buildDir = filepath.Join(userConfig.Build.BuildDir, target.Name)
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return Build(ctx, userConfig, target)
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}
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