code.vegaprotocol.io/vega@v0.79.0/cmd/blockexplorer/commands/root.go (about)

     1  // Copyright (C) 2023 Gobalsky Labs Limited
     2  //
     3  // This program is free software: you can redistribute it and/or modify
     4  // it under the terms of the GNU Affero General Public License as
     5  // published by the Free Software Foundation, either version 3 of the
     6  // License, or (at your option) any later version.
     7  //
     8  // This program is distributed in the hope that it will be useful,
     9  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    10  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    11  // GNU Affero General Public License for more details.
    12  //
    13  // You should have received a copy of the GNU Affero General Public License
    14  // along with this program.  If not, see <http://www.gnu.org/licenses/>.
    15  
    16  package commands
    17  
    18  import (
    19  	"context"
    20  	"fmt"
    21  	"os"
    22  
    23  	"code.vegaprotocol.io/vega/datanode/config"
    24  
    25  	"github.com/jessevdk/go-flags"
    26  )
    27  
    28  // Subcommand is the signature of a sub command that can be registered.
    29  type Subcommand func(context.Context, *flags.Parser) error
    30  
    31  // Register registers one or more subcommands.
    32  func Register(ctx context.Context, parser *flags.Parser, cmds ...Subcommand) error {
    33  	for _, fn := range cmds {
    34  		if err := fn(ctx, parser); err != nil {
    35  			return err
    36  		}
    37  	}
    38  	return nil
    39  }
    40  
    41  func Execute(ctx context.Context) error {
    42  	parser := flags.NewParser(&config.Empty{}, flags.Default)
    43  
    44  	if err := Register(ctx, parser,
    45  		Init,
    46  		Run,
    47  		InitDB,
    48  		UnsafeResetAll,
    49  	); err != nil {
    50  		fmt.Printf("%+v\n", err)
    51  		return err
    52  	}
    53  
    54  	if _, err := parser.Parse(); err != nil {
    55  		switch t := err.(type) {
    56  		case *flags.Error:
    57  			if t.Type != flags.ErrHelp {
    58  				parser.WriteHelp(os.Stdout)
    59  			}
    60  		}
    61  		return err
    62  	}
    63  	return nil
    64  }