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main.go
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main.go
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package main
import (
"context"
"fmt"
"net/url"
"os"
"time"
"github.com/moby/buildkit/client"
"github.com/moby/buildkit/util/apicaps"
"github.com/moby/buildkit/util/appdefaults"
"github.com/moby/buildkit/util/profiler"
"github.com/moby/buildkit/version"
opentracing "github.com/opentracing/opentracing-go"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
func init() {
apicaps.ExportedProduct = "buildkit"
}
func main() {
cli.VersionPrinter = func(c *cli.Context) {
fmt.Println(c.App.Name, version.Package, c.App.Version, version.Revision)
}
app := cli.NewApp()
app.Name = "buildctl"
app.Usage = "build utility"
app.Version = version.Version
defaultAddress := os.Getenv("BUILDKIT_HOST")
if defaultAddress == "" {
defaultAddress = appdefaults.Address
}
app.Flags = []cli.Flag{
cli.BoolFlag{
Name: "debug",
Usage: "enable debug output in logs",
},
cli.StringFlag{
Name: "addr",
Usage: "buildkitd address",
Value: defaultAddress,
},
cli.StringFlag{
Name: "tlsservername",
Usage: "buildkitd server name for certificate validation",
Value: "",
},
cli.StringFlag{
Name: "tlscacert",
Usage: "CA certificate for validation",
Value: "",
},
cli.StringFlag{
Name: "tlscert",
Usage: "client certificate",
Value: "",
},
cli.StringFlag{
Name: "tlskey",
Usage: "client key",
Value: "",
},
cli.IntFlag{
Name: "timeout",
Usage: "timeout backend connection after value seconds",
Value: 5,
},
}
app.Commands = []cli.Command{
diskUsageCommand,
pruneCommand,
buildCommand,
debugCommand,
}
var debugEnabled bool
app.Before = func(context *cli.Context) error {
debugEnabled = context.GlobalBool("debug")
if debugEnabled {
logrus.SetLevel(logrus.DebugLevel)
}
return nil
}
attachAppContext(app)
profiler.Attach(app)
if err := app.Run(os.Args); err != nil {
if debugEnabled {
fmt.Fprintf(os.Stderr, "error: %+v\n", err)
} else {
fmt.Fprintf(os.Stderr, "error: %v\n", err)
}
os.Exit(1)
}
}
func resolveClient(c *cli.Context) (*client.Client, error) {
serverName := c.GlobalString("tlsservername")
if serverName == "" {
// guess servername as hostname of target address
uri, err := url.Parse(c.GlobalString("addr"))
if err != nil {
return nil, err
}
serverName = uri.Hostname()
}
caCert := c.GlobalString("tlscacert")
cert := c.GlobalString("tlscert")
key := c.GlobalString("tlskey")
opts := []client.ClientOpt{client.WithFailFast()}
ctx := commandContext(c)
if span := opentracing.SpanFromContext(ctx); span != nil {
opts = append(opts, client.WithTracer(span.Tracer()))
}
if caCert != "" || cert != "" || key != "" {
opts = append(opts, client.WithCredentials(serverName, caCert, cert, key))
}
timeout := time.Duration(c.GlobalInt("timeout"))
ctx, cancel := context.WithTimeout(ctx, timeout*time.Second)
defer cancel()
return client.New(ctx, c.GlobalString("addr"), opts...)
}