github.com/ylsGit/go-ethereum@v1.6.5/node/errors.go (about)

     1  // Copyright 2015 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package node
    18  
    19  import (
    20  	"fmt"
    21  	"reflect"
    22  )
    23  
    24  // DuplicateServiceError is returned during Node startup if a registered service
    25  // constructor returns a service of the same type that was already started.
    26  type DuplicateServiceError struct {
    27  	Kind reflect.Type
    28  }
    29  
    30  // Error generates a textual representation of the duplicate service error.
    31  func (e *DuplicateServiceError) Error() string {
    32  	return fmt.Sprintf("duplicate service: %v", e.Kind)
    33  }
    34  
    35  // StopError is returned if a Node fails to stop either any of its registered
    36  // services or itself.
    37  type StopError struct {
    38  	Server   error
    39  	Services map[reflect.Type]error
    40  }
    41  
    42  // Error generates a textual representation of the stop error.
    43  func (e *StopError) Error() string {
    44  	return fmt.Sprintf("server: %v, services: %v", e.Server, e.Services)
    45  }