dotcloud/docker

package client // import "github.com/docker/docker/client"

import (
    "context"
    "encoding/json"
    "net/http"
    "net/url"
    "strconv"

    "github.com/docker/docker/api/types/filters"
    "github.com/docker/docker/api/types/registry"
    "github.com/docker/docker/errdefs"
)

// ImageSearch makes the docker host search by a term in a remote registry.
// The list of results is not sorted in any fashion.
func (cli *Client) ImageSearch(ctx context.Context, term string, options registry.SearchOptions) ([]registry.SearchResult, error) {
    var results []registry.SearchResult
    query := url.Values{}
    query.Set("term", term)
    if options.Limit > 0 {
        query.Set("limit", strconv.Itoa(options.Limit))
    }

    if options.Filters.Len() > 0 {
        filterJSON, err := filters.ToJSON(options.Filters)
        if err != nil {
            return results, err
        }
        query.Set("filters", filterJSON)
    }

    resp, err := cli.tryImageSearch(ctx, query, options.RegistryAuth)
    defer ensureReaderClosed(resp)
    if errdefs.IsUnauthorized(err) && options.PrivilegeFunc != nil {
        newAuthHeader, privilegeErr := options.PrivilegeFunc(ctx)
        if privilegeErr != nil {
            return results, privilegeErr
        }
        resp, err = cli.tryImageSearch(ctx, query, newAuthHeader)
    }
    if err != nil {
        return results, err
    }

    err = json.NewDecoder(resp.body).Decode(&results)
    return results, err
}

func (cli *Client) tryImageSearch(ctx context.Context, query url.Values, registryAuth string) (serverResponse, error) {
    return cli.get(ctx, "/images/search", query, http.Header{
        registry.AuthHeader: {registryAuth},
    })
}