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gateway.go
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gateway.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package commands
import (
"context"
"errors"
"fmt"
"os"
"os/signal"
"syscall"
"code.vegaprotocol.io/vega/datanode/config"
"code.vegaprotocol.io/vega/datanode/gateway"
"code.vegaprotocol.io/vega/datanode/gateway/server"
"code.vegaprotocol.io/vega/logging"
"code.vegaprotocol.io/vega/paths"
"golang.org/x/sync/errgroup"
"github.com/jessevdk/go-flags"
)
type gatewayCmd struct {
ctx context.Context
gateway.Config
config.VegaHomeFlag
}
func (opts *gatewayCmd) Execute(_ []string) error {
eg, ctx := errgroup.WithContext(opts.ctx)
ctx, cancel := context.WithCancel(ctx)
defer cancel()
log := logging.NewLoggerFromConfig(logging.NewDefaultConfig())
defer log.AtExit()
vegaPaths := paths.New(opts.VegaHome)
cfgwatchr, err := config.NewWatcher(ctx, log, vegaPaths)
if err != nil {
log.Error("unable to start config watcher", logging.Error(err))
return errors.New("unable to start config watcher")
}
conf := cfgwatchr.Get()
opts.Config = conf.Gateway
// parse the remaining command line options again to ensure they
// take precedence.
if _, err := flags.Parse(opts); err != nil {
return err
}
// waitSig will wait for a sigterm or sigint interrupt.
eg.Go(func() error {
gracefulStop := make(chan os.Signal, 1)
signal.Notify(gracefulStop, syscall.SIGTERM, syscall.SIGINT)
select {
case sig := <-gracefulStop:
log.Info("Caught signal", logging.String("name", fmt.Sprintf("%+v", sig)))
cancel()
case <-ctx.Done():
return ctx.Err()
}
return nil
})
eg.Go(func() error {
srv := server.New(opts.Config, log, vegaPaths)
if err := srv.Start(ctx); err != nil {
return err
}
return nil
})
return eg.Wait()
}
func Gateway(ctx context.Context, parser *flags.Parser) error {
opts := &gatewayCmd{
ctx: ctx,
Config: gateway.NewDefaultConfig(),
}
_, err := parser.AddCommand("gateway", "The API gateway", "The gateway for all the vega APIs", opts)
return err
}