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package main
import (
"encoding/json"
"fmt"
"os"
"regexp"
"runtime"
"text/template"
"github.com/containers/buildah"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"golang.org/x/crypto/ssh/terminal"
)
type infoResults struct {
debug bool
format string
}
func init() {
var (
infoDescription = "\n Display information about the host and current storage statistics which are useful when reporting issues."
opts infoResults
)
infoCommand := &cobra.Command{
Use: "info",
Short: "Display Buildah system information",
Long: infoDescription,
RunE: func(cmd *cobra.Command, args []string) error {
return infoCmd(cmd, opts)
},
Args: cobra.NoArgs,
Example: `buildah info`,
}
infoCommand.SetUsageTemplate(UsageTemplate())
flags := infoCommand.Flags()
flags.BoolVarP(&opts.debug, "debug", "d", false, "display additional debug information")
flags.StringVar(&opts.format, "format", "", "use `format` as a Go template to format the output")
rootCmd.AddCommand(infoCommand)
}
func infoCmd(c *cobra.Command, iopts infoResults) error {
info := map[string]interface{}{}
store, err := getStore(c)
if err != nil {
return err
}
infoArr, err := buildah.Info(store)
if err != nil {
return errors.Wrapf(err, "error getting info")
}
if iopts.debug {
debugInfo := debugInfo()
infoArr = append(infoArr, buildah.InfoData{Type: "debug", Data: debugInfo})
}
for _, currInfo := range infoArr {
info[currInfo.Type] = currInfo.Data
}
if iopts.format != "" {
format := iopts.format
if matched, err := regexp.MatchString("{{.*}}", format); err != nil {
return errors.Wrapf(err, "error validating format provided: %s", format)
} else if !matched {
return errors.Errorf("error invalid format provided: %s", format)
}
t, err := template.New("format").Parse(format)
if err != nil {
return errors.Wrapf(err, "Template parsing error")
}
if err = t.Execute(os.Stdout, info); err != nil {
return err
}
if terminal.IsTerminal(int(os.Stdout.Fd())) {
fmt.Println()
}
return nil
}
enc := json.NewEncoder(os.Stdout)
enc.SetIndent("", " ")
if terminal.IsTerminal(int(os.Stdout.Fd())) {
enc.SetEscapeHTML(false)
}
return enc.Encode(info)
}
// top-level "debug" info
func debugInfo() map[string]interface{} {
info := map[string]interface{}{}
info["compiler"] = runtime.Compiler
info["go version"] = runtime.Version()
info["buildah version"] = buildah.Version
info["git commit"] = GitCommit
return info
}
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