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package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"strings"
"github.com/containers/storage"
"github.com/containers/storage/pkg/mflag"
)
var metadataQuiet = false
func metadata(flags *mflag.FlagSet, action string, m storage.Store, args []string) int {
if len(args) < 1 {
return 1
}
metadataDict := make(map[string]string)
missingAny := false
for _, what := range args {
if metadata, err := m.Metadata(what); err == nil {
metadataDict[what] = strings.TrimSuffix(metadata, "\n")
} else {
missingAny = true
}
}
if jsonOutput {
json.NewEncoder(os.Stdout).Encode(metadataDict)
} else {
for _, what := range args {
if metadataQuiet {
fmt.Printf("%s\n", metadataDict[what])
} else {
fmt.Printf("%s: %s\n", what, metadataDict[what])
}
}
}
if missingAny {
return 1
}
return 0
}
func setMetadata(flags *mflag.FlagSet, action string, m storage.Store, args []string) int {
if len(args) < 1 {
return 1
}
if paramMetadataFile == "" && paramMetadata == "" {
fmt.Fprintf(os.Stderr, "no new metadata provided\n")
return 1
}
if paramMetadataFile != "" {
f, err := os.Open(paramMetadataFile)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
return 1
}
b, err := ioutil.ReadAll(f)
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
return 1
}
paramMetadata = string(b)
}
if err := m.SetMetadata(args[0], paramMetadata); err != nil {
fmt.Fprintf(os.Stderr, "%+v\n", err)
return 1
}
return 0
}
func init() {
commands = append(commands, command{
names: []string{"metadata"},
optionsHelp: "[LayerOrImageOrContainerNameOrID [...]]",
usage: "Retrieve layer, image, or container metadata",
minArgs: 1,
action: metadata,
addFlags: func(flags *mflag.FlagSet, cmd *command) {
flags.BoolVar(&metadataQuiet, []string{"-quiet", "q"}, metadataQuiet, "Omit names and IDs")
flags.BoolVar(&jsonOutput, []string{"-json", "j"}, jsonOutput, "Prefer JSON output")
},
})
commands = append(commands, command{
names: []string{"set-metadata", "setmetadata"},
optionsHelp: "[options [...]] layerOrImageOrContainerNameOrID",
usage: "Set layer, image, or container metadata",
minArgs: 1,
maxArgs: 1,
action: setMetadata,
addFlags: func(flags *mflag.FlagSet, cmd *command) {
flags.StringVar(¶mMetadata, []string{"-metadata", "m"}, "", "Metadata")
flags.StringVar(¶mMetadataFile, []string{"-metadata-file", "f"}, "", "Metadata File")
},
})
}
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