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package main
import (
"reflect"
"strings"
"github.com/containers/buildah/pkg/formats"
"github.com/containers/image/types"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/libpod/image"
"github.com/pkg/errors"
"github.com/spf13/cobra"
)
const (
descriptionTruncLength = 44
maxQueries = 25
)
var (
searchCommand cliconfig.SearchValues
searchDescription = `Search registries for a given image. Can search all the default registries or a specific registry.
Users can limit the number of results, and filter the output based on certain conditions.`
_searchCommand = &cobra.Command{
Use: "search [flags] TERM",
Short: "Search registry for image",
Long: searchDescription,
RunE: func(cmd *cobra.Command, args []string) error {
searchCommand.InputArgs = args
searchCommand.GlobalFlags = MainGlobalOpts
return searchCmd(&searchCommand)
},
Example: `podman search --filter=is-official --limit 3 alpine
podman search registry.fedoraproject.org/ # only works with v2 registries
podman search --format "table {{.Index}} {{.Name}}" registry.fedoraproject.org/fedora`,
}
)
func init() {
searchCommand.Command = _searchCommand
searchCommand.SetHelpTemplate(HelpTemplate())
searchCommand.SetUsageTemplate(UsageTemplate())
flags := searchCommand.Flags()
flags.StringVar(&searchCommand.Authfile, "authfile", "", "Path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json. Use REGISTRY_AUTH_FILE environment variable to override")
flags.StringSliceVarP(&searchCommand.Filter, "filter", "f", []string{}, "Filter output based on conditions provided (default [])")
flags.StringVar(&searchCommand.Format, "format", "", "Change the output format to a Go template")
flags.IntVar(&searchCommand.Limit, "limit", 0, "Limit the number of results")
flags.BoolVar(&searchCommand.NoTrunc, "no-trunc", false, "Do not truncate the output")
flags.BoolVar(&searchCommand.TlsVerify, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
}
func searchCmd(c *cliconfig.SearchValues) error {
args := c.InputArgs
if len(args) > 1 {
return errors.Errorf("too many arguments. Requires exactly 1")
}
if len(args) == 0 {
return errors.Errorf("no argument given, requires exactly 1 argument")
}
term := args[0]
filter, err := image.ParseSearchFilter(c.Filter)
if err != nil {
return err
}
searchOptions := image.SearchOptions{
NoTrunc: c.NoTrunc,
Limit: c.Limit,
Filter: *filter,
Authfile: getAuthFile(c.Authfile),
}
if c.Flag("tls-verify").Changed {
searchOptions.InsecureSkipTLSVerify = types.NewOptionalBool(!c.TlsVerify)
}
results, err := image.SearchImages(term, searchOptions)
if err != nil {
return err
}
format := genSearchFormat(c.Format)
if len(results) == 0 {
return nil
}
out := formats.StdoutTemplateArray{Output: searchToGeneric(results), Template: format, Fields: searchHeaderMap()}
formats.Writer(out).Out()
return nil
}
// searchHeaderMap returns the headers of a SearchResult.
func searchHeaderMap() map[string]string {
s := new(image.SearchResult)
v := reflect.Indirect(reflect.ValueOf(s))
values := make(map[string]string, v.NumField())
for i := 0; i < v.NumField(); i++ {
key := v.Type().Field(i).Name
value := key
values[key] = strings.ToUpper(splitCamelCase(value))
}
return values
}
func genSearchFormat(format string) string {
if format != "" {
// "\t" from the command line is not being recognized as a tab
// replacing the string "\t" to a tab character if the user passes in "\t"
return strings.Replace(format, `\t`, "\t", -1)
}
return "table {{.Index}}\t{{.Name}}\t{{.Description}}\t{{.Stars}}\t{{.Official}}\t{{.Automated}}\t"
}
func searchToGeneric(params []image.SearchResult) (genericParams []interface{}) {
for _, v := range params {
genericParams = append(genericParams, interface{}(v))
}
return genericParams
}
func genSearchOutputMap() map[string]string {
io := image.SearchResult{}
v := reflect.Indirect(reflect.ValueOf(io))
values := make(map[string]string)
for i := 0; i < v.NumField(); i++ {
key := v.Type().Field(i).Name
value := key
values[key] = strings.ToUpper(splitCamelCase(value))
}
return values
}
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