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search.go
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search.go
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package image
import (
"fmt"
"sort"
"strings"
"text/tabwriter"
"golang.org/x/net/context"
"github.com/docker/docker/api/client"
"github.com/docker/docker/cli"
"github.com/docker/docker/pkg/stringutils"
"github.com/docker/docker/registry"
"github.com/docker/engine-api/types"
"github.com/docker/engine-api/types/filters"
registrytypes "github.com/docker/engine-api/types/registry"
"github.com/spf13/cobra"
)
type searchOptions struct {
term string
noTrunc bool
limit int
filter []string
// Deprecated
stars uint
automated bool
}
// NewSearchCommand create a new `docker search` command
func NewSearchCommand(dockerCli *client.DockerCli) *cobra.Command {
var opts searchOptions
cmd := &cobra.Command{
Use: "search [OPTIONS] TERM",
Short: "Search the Docker Hub for images",
Args: cli.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
opts.term = args[0]
return runSearch(dockerCli, opts)
},
}
flags := cmd.Flags()
flags.BoolVar(&opts.noTrunc, "no-trunc", false, "Don't truncate output")
flags.StringSliceVarP(&opts.filter, "filter", "f", []string{}, "Filter output based on conditions provided")
flags.IntVar(&opts.limit, "limit", registry.DefaultSearchLimit, "Max number of search results")
flags.BoolVar(&opts.automated, "automated", false, "Only show automated builds")
flags.UintVarP(&opts.stars, "stars", "s", 0, "Only displays with at least x stars")
flags.MarkDeprecated("automated", "use --filter=automated=true instead")
flags.MarkDeprecated("stars", "use --filter=stars=3 instead")
return cmd
}
func runSearch(dockerCli *client.DockerCli, opts searchOptions) error {
indexInfo, err := registry.ParseSearchIndexInfo(opts.term)
if err != nil {
return err
}
ctx := context.Background()
authConfig := dockerCli.ResolveAuthConfig(ctx, indexInfo)
requestPrivilege := dockerCli.RegistryAuthenticationPrivilegedFunc(indexInfo, "search")
encodedAuth, err := client.EncodeAuthToBase64(authConfig)
if err != nil {
return err
}
searchFilters := filters.NewArgs()
for _, f := range opts.filter {
var err error
searchFilters, err = filters.ParseFlag(f, searchFilters)
if err != nil {
return err
}
}
options := types.ImageSearchOptions{
RegistryAuth: encodedAuth,
PrivilegeFunc: requestPrivilege,
Filters: searchFilters,
Limit: opts.limit,
}
clnt := dockerCli.Client()
unorderedResults, err := clnt.ImageSearch(ctx, opts.term, options)
if err != nil {
return err
}
results := searchResultsByStars(unorderedResults)
sort.Sort(results)
w := tabwriter.NewWriter(dockerCli.Out(), 10, 1, 3, ' ', 0)
fmt.Fprintf(w, "NAME\tDESCRIPTION\tSTARS\tOFFICIAL\tAUTOMATED\n")
for _, res := range results {
// --automated and -s, --stars are deprecated since Docker 1.12
if (opts.automated && !res.IsAutomated) || (int(opts.stars) > res.StarCount) {
continue
}
desc := strings.Replace(res.Description, "\n", " ", -1)
desc = strings.Replace(desc, "\r", " ", -1)
if !opts.noTrunc && len(desc) > 45 {
desc = stringutils.Truncate(desc, 42) + "..."
}
fmt.Fprintf(w, "%s\t%s\t%d\t", res.Name, desc, res.StarCount)
if res.IsOfficial {
fmt.Fprint(w, "[OK]")
}
fmt.Fprint(w, "\t")
if res.IsAutomated {
fmt.Fprint(w, "[OK]")
}
fmt.Fprint(w, "\n")
}
w.Flush()
return nil
}
// SearchResultsByStars sorts search results in descending order by number of stars.
type searchResultsByStars []registrytypes.SearchResult
func (r searchResultsByStars) Len() int { return len(r) }
func (r searchResultsByStars) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
func (r searchResultsByStars) Less(i, j int) bool { return r[j].StarCount < r[i].StarCount }