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build.go
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build.go
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package cmd
import (
"context"
"errors"
"fmt"
"os"
"path/filepath"
"strings"
"github.com/oligoden/meta/entity"
"github.com/oligoden/meta/refmap"
"github.com/spf13/cobra"
)
// buildCmd represents the build command
var buildCmd = &cobra.Command{
Use: "build",
Short: "Build the source code and exit",
Long: `Use build to do a once-off build and exit.
Refer to 'meta up' to keep running and watch for changes.
See https://oligoden.com/meta for more information.`,
Run: func(cmd *cobra.Command, args []string) {
metaFileName, err := cmd.Flags().GetString("metafile")
if err != nil {
fmt.Println("error getting config filename flag,", err)
os.Exit(1)
}
verboseValue, _ := cmd.Flags().GetInt("verbose")
if verboseValue > 0 {
fmt.Println("verbosity level", verboseValue)
}
_, err = os.Stat(metaFileName)
if errors.Is(err, os.ErrNotExist) {
fmt.Printf("project config \"%s\" not found\n", metaFileName)
os.Exit(0)
}
e := entity.NewProject()
err = e.LoadFile(metaFileName)
if err != nil {
fmt.Println("error loading project config,", err)
os.Exit(1)
}
metaOverrideFileName := strings.TrimSuffix(metaFileName, filepath.Ext(metaFileName)) + ".override" + filepath.Ext(metaFileName)
if _, err := os.Stat(metaOverrideFileName); err == nil {
err = e.LoadFile(metaOverrideFileName)
if err != nil {
fmt.Println("error loading project config,", err)
os.Exit(1)
}
} else if errors.Is(err, os.ErrNotExist) {
if verboseValue >= 1 {
fmt.Println("no config override file used")
}
} else {
fmt.Println("error loading project config override,", err)
fmt.Println("continuing with normal config")
}
if verboseValue >= 1 {
if e.Environment != "" {
fmt.Println("environment:", e.Environment)
} else {
fmt.Println("no environment set")
}
}
origLocation, err := cmd.Flags().GetString("orig")
if err != nil {
fmt.Println("error getting origin flag,", err)
os.Exit(1)
}
if origLocation == "" {
origLocation = e.OrigLocation
}
destLocation, err := cmd.Flags().GetString("dest")
if err != nil {
fmt.Println("error getting destination flag,", err)
os.Exit(1)
}
if destLocation == "" {
destLocation = e.DestLocation
}
ctx := context.WithValue(context.Background(), refmap.ContextKey("orig"), origLocation)
ctx = context.WithValue(ctx, refmap.ContextKey("dest"), destLocation)
ctx = context.WithValue(ctx, refmap.ContextKey("verbose"), verboseValue)
// the configuration is processed and graph build
fmt.Println("processing...")
rm := refmap.Start()
pb := &entity.ProjectBranch{}
err = e.Process(pb, rm, ctx)
if err != nil {
fmt.Println("error processing project,", err)
os.Exit(1)
}
err = rm.Evaluate()
if err != nil {
fmt.Println("error evaluating graph,", err)
os.Exit(1)
}
rm.Output()
fmt.Println("building...")
for _, ref := range rm.ChangedRefs() {
if verboseValue >= 2 {
fmt.Println("performing", ref.Identifier())
}
err = ref.Perform(rm, ctx)
if err != nil {
fmt.Println("error performing actions on", ref.Identifier(), err)
fmt.Println(ref.Output())
}
if ref.Output() != "" {
fmt.Println(ref.Output())
}
}
rm.Assess()
rm.Finish()
fmt.Println("done")
},
}
func init() {
rootCmd.AddCommand(buildCmd)
buildCmd.Flags().String("metafile", "meta.json", "The meta file")
buildCmd.Flags().String("dest", "", "The base destination directory")
buildCmd.Flags().String("orig", "", "The base origin directory")
buildCmd.Flags().BoolP("force", "f", false, "Force rebuilding of existing files")
buildCmd.Flags().IntP("verbose", "v", 0, "Set verbosity to 1, 2 or 3")
}