github.com/aergoio/aergo@v1.3.1/contract/enterprise/changecluster.go (about)

     1  package enterprise
     2  
     3  import (
     4  	"fmt"
     5  	"github.com/aergoio/aergo/types"
     6  	"reflect"
     7  	"strconv"
     8  )
     9  
    10  type CcArgument map[string]interface{}
    11  
    12  const (
    13  	CmdMembershipAdd    = "add"
    14  	CmdMembershipRemove = "remove"
    15  
    16  	CCCommand         = "command"
    17  	MemberAttrName    = "name"
    18  	MemberAttrAddress = "address"
    19  	MemberAttrPeerID  = "peerid"
    20  	MemberAttrID      = "id"
    21  )
    22  
    23  /*
    24  var (
    25  	ConfChangeState_name = map[ConfChangeState]string{
    26  		0: "Proposed",
    27  		1: "Saved",
    28  		2: "Applied",
    29  	}
    30  )*/
    31  
    32  func ValidateChangeCluster(ci types.CallInfo, blockNo types.BlockNo) (interface{}, error) {
    33  	var (
    34  		ccArg     CcArgument
    35  		ok        bool
    36  		err       error
    37  		changeReq *types.MembershipChange
    38  	)
    39  
    40  	if len(ci.Args) != 1 { //args[0] : map{ "command": "add", "name:", "address:", "peerid:", "id:"}
    41  		return nil, fmt.Errorf("invalid arguments in payload for ChangeCluster: %s", ci.Args)
    42  	}
    43  
    44  	ccArg, ok = ci.Args[0].(map[string]interface{})
    45  	if !ok {
    46  		return nil, fmt.Errorf("invalid argument in payload for ChangeCluster(map[string]interface{}) : argument=%v", reflect.TypeOf(ci.Args[0]))
    47  	}
    48  
    49  	if changeReq, err = ccArg.parse(); err != nil {
    50  		return nil, err
    51  	}
    52  
    53  	changeReq.RequestID = blockNo
    54  
    55  	return changeReq, nil
    56  }
    57  
    58  func (cc CcArgument) get(key string) (string, error) {
    59  	var (
    60  		val    interface{}
    61  		valStr string
    62  		ok     bool
    63  	)
    64  
    65  	if val, ok = cc[key]; !ok {
    66  		return "", fmt.Errorf("invalid ChangeCluster argument: not exist %s", key)
    67  	}
    68  
    69  	if valStr, ok = val.(string); !ok {
    70  		return "", fmt.Errorf("invalid ChangeCluster argument: not string value(%v)", reflect.TypeOf(val))
    71  	}
    72  
    73  	return valStr, nil
    74  }
    75  
    76  func (cc CcArgument) getUint64(key string) (uint64, error) {
    77  	var (
    78  		val     interface{}
    79  		valUint float64
    80  		ok      bool
    81  	)
    82  
    83  	if val, ok = cc[key]; !ok {
    84  		return 0, fmt.Errorf("invalid ChangeCluster argument: not exist %s", key)
    85  	}
    86  
    87  	if valUint, ok = val.(float64); !ok {
    88  		return 0, fmt.Errorf("invalid ChangeCluster argument: not uint64(%v)", reflect.TypeOf(val))
    89  	}
    90  
    91  	return uint64(valUint), nil
    92  }
    93  
    94  func (cc CcArgument) parse() (*types.MembershipChange, error) {
    95  	var (
    96  		cmd, name, address, peeridStr, idStr string
    97  		id                                   uint64
    98  		err                                  error
    99  		mChange                              types.MembershipChange
   100  		peerID                               types.PeerID
   101  	)
   102  
   103  	if cmd, err = cc.get(CCCommand); err != nil {
   104  		return nil, err
   105  	}
   106  
   107  	switch cmd {
   108  	case CmdMembershipAdd:
   109  		mChange.Type = types.MembershipChangeType_ADD_MEMBER
   110  
   111  		if name, err = cc.get(MemberAttrName); err != nil {
   112  			return nil, err
   113  		}
   114  
   115  		if address, err = cc.get(MemberAttrAddress); err != nil {
   116  			return nil, err
   117  		}
   118  
   119  		if peeridStr, err = cc.get(MemberAttrPeerID); err != nil {
   120  			return nil, err
   121  		}
   122  
   123  		peerID, err = types.IDB58Decode(peeridStr)
   124  		if err != nil {
   125  			return nil, fmt.Errorf("invalid ChangeCluster argument: can't decode peerid string(%s)", peeridStr)
   126  		}
   127  
   128  		if _, err := types.ParseMultiaddrWithResolve(address); err != nil {
   129  			return nil, fmt.Errorf("invalid ChangeCluster argument: %s", err.Error())
   130  		}
   131  
   132  	case CmdMembershipRemove:
   133  		mChange.Type = types.MembershipChangeType_REMOVE_MEMBER
   134  
   135  		if idStr, err = cc.get(MemberAttrID); err != nil {
   136  			return nil, err
   137  		}
   138  
   139  		if id, err = strconv.ParseUint(idStr, 16, 64); err != nil {
   140  			return nil, fmt.Errorf("invalid ChangeCluster argument: invalid id %s. ID must be a string in hexadecial format(ex:dd44cf1a06727dc5)", idStr)
   141  		}
   142  
   143  	default:
   144  		return nil, fmt.Errorf("invalid ChangeCluster argument: invalid command %s", cmd)
   145  	}
   146  
   147  	mChange.Attr = &types.MemberAttr{Name: name, Address: address, PeerID: []byte(peerID), ID: id}
   148  
   149  	return &mChange, nil
   150  }