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package targets
import (
"bytes"
"encoding/json"
"fmt"
"io"
"text/tabwriter"
"github.com/moby/buildkit/frontend/gateway/client"
"github.com/moby/buildkit/frontend/subrequests"
"github.com/moby/buildkit/solver/pb"
)
const RequestTargets = "frontend.targets"
var SubrequestsTargetsDefinition = subrequests.Request{
Name: RequestTargets,
Version: "1.0.0",
Type: subrequests.TypeRPC,
Description: "List all targets current build supports",
Opts: []subrequests.Named{},
Metadata: []subrequests.Named{
{Name: "result.json"},
{Name: "result.txt"},
},
}
type List struct {
Targets []Target `json:"targets"`
Sources [][]byte `json:"sources"`
}
func (l List) ToResult() (*client.Result, error) {
res := client.NewResult()
dt, err := json.MarshalIndent(l, "", " ")
if err != nil {
return nil, err
}
res.AddMeta("result.json", dt)
b := bytes.NewBuffer(nil)
if err := PrintTargets(dt, b); err != nil {
return nil, err
}
res.AddMeta("result.txt", b.Bytes())
res.AddMeta("version", []byte(SubrequestsTargetsDefinition.Version))
return res, nil
}
type Target struct {
Name string `json:"name,omitempty"`
Default bool `json:"default,omitempty"`
Description string `json:"description,omitempty"`
Base string `json:"base,omitempty"`
Platform string `json:"platform,omitempty"`
Location *pb.Location `json:"location,omitempty"`
}
func PrintTargets(dt []byte, w io.Writer) error {
var l List
if err := json.Unmarshal(dt, &l); err != nil {
return err
}
tw := tabwriter.NewWriter(w, 0, 0, 1, ' ', 0)
fmt.Fprintf(tw, "TARGET\tDESCRIPTION\n")
for _, t := range l.Targets {
name := t.Name
if name == "" && t.Default {
name = "(default)"
} else if t.Default {
name = fmt.Sprintf("%s (default)", name)
}
fmt.Fprintf(tw, "%s\t%s\n", name, t.Description)
}
return tw.Flush()
}
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