/
main.go
138 lines (113 loc) · 2.72 KB
/
main.go
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package main
import (
"context"
"fmt"
"math/rand"
"os"
"strconv"
"time"
"github.com/moby/buildkit/client"
_ "github.com/moby/buildkit/client/connhelper/dockercontainer"
"github.com/moby/buildkit/client/llb"
"github.com/moby/buildkit/util/appdefaults"
"github.com/moby/buildkit/util/progress/progresswriter"
"golang.org/x/sync/errgroup"
)
func main() {
rand.Seed(time.Now().Unix())
addr := os.Getenv("BUILDKIT_HOST")
if addr == "" {
addr = appdefaults.Address
}
go func() {
if err := pushAndRun(context.Background(), addr); err != nil {
fmt.Fprintf(os.Stderr, "err: %s\n", err)
os.Exit(1)
}
}()
time.Sleep(10 * time.Second)
if err := pushAndRun(context.Background(), addr); err != nil {
fmt.Fprintf(os.Stderr, "err: %s\n", err)
os.Exit(1)
}
}
const imageName = "localhost:5000/alehmann/dummy:test"
func pushAndRun(ctx context.Context, addr string) error {
if err := push(ctx, addr); err != nil {
return err
}
return run(ctx, addr)
}
func push(ctx context.Context, addr string) error {
st := llb.Image("alpine", llb.LinuxAmd64)
st = st.Run(
llb.Shlex(`mkdir /files && touch /files/` + strconv.Itoa(rand.Int())),
).Root()
def, err := st.Marshal(ctx)
if err != nil {
return err
}
c, err := client.New(ctx, addr, client.WithFailFast())
if err != nil {
return err
}
pw, err := progresswriter.NewPrinter(context.TODO(), os.Stderr, "plain")
if err != nil {
return err
}
mw := progresswriter.NewMultiWriter(pw)
eg, ctx := errgroup.WithContext(ctx)
eg.Go(func() error {
solveOpt := client.SolveOpt{
Exports: []client.ExportEntry{{
Type: client.ExporterImage,
Attrs: map[string]string{
"name": imageName,
"push": "true",
},
}},
}
_, err := c.Solve(ctx, def, solveOpt, progresswriter.ResetTime(mw.WithPrefix("", false)).Status())
return err
})
eg.Go(func() error {
<-pw.Done()
return pw.Err()
})
return eg.Wait()
}
func run(ctx context.Context, addr string) error {
st := llb.Image(imageName, llb.LinuxAmd64, llb.IgnoreCache)
st = st.Run(
llb.Shlex(`find /files`),
llb.IgnoreCache,
).Root()
st = st.Run(
llb.Shlex(`sleep infinity`),
llb.IgnoreCache,
).Root()
def, err := st.Marshal(ctx)
if err != nil {
return err
}
c, err := client.New(ctx, addr, client.WithFailFast())
if err != nil {
return err
}
pw, err := progresswriter.NewPrinter(context.TODO(), os.Stderr, "plain")
if err != nil {
return err
}
mw := progresswriter.NewMultiWriter(pw)
eg, ctx := errgroup.WithContext(ctx)
eg.Go(func() error {
solveOpt := client.SolveOpt{}
_, err := c.Solve(ctx, def, solveOpt, progresswriter.ResetTime(mw.WithPrefix("", false)).Status())
return err
})
eg.Go(func() error {
<-pw.Done()
return pw.Err()
})
return eg.Wait()
}