106 lines
3.8 KiB
Go
106 lines
3.8 KiB
Go
// VulcanizeDB
|
|
// Copyright © 2019 Vulcanize
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package getter
|
|
|
|
import (
|
|
"github.com/vulcanize/vulcanizedb/pkg/contract_watcher/shared/constants"
|
|
"github.com/vulcanize/vulcanizedb/pkg/contract_watcher/shared/fetcher"
|
|
"github.com/vulcanize/vulcanizedb/pkg/core"
|
|
)
|
|
|
|
type InterfaceGetter interface {
|
|
GetABI(resolverAddr string, blockNumber int64) string
|
|
GetBlockChain() core.BlockChain
|
|
}
|
|
|
|
type interfaceGetter struct {
|
|
fetcher.Fetcher
|
|
}
|
|
|
|
func NewInterfaceGetter(blockChain core.BlockChain) *interfaceGetter {
|
|
return &interfaceGetter{
|
|
Fetcher: fetcher.Fetcher{
|
|
BlockChain: blockChain,
|
|
},
|
|
}
|
|
}
|
|
|
|
// Used to construct a custom ABI based on the results from calling supportsInterface
|
|
func (g *interfaceGetter) GetABI(resolverAddr string, blockNumber int64) string {
|
|
a := constants.SupportsInterfaceABI
|
|
args := make([]interface{}, 1)
|
|
args[0] = constants.MetaSig.Bytes()
|
|
supports, err := g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err != nil || !supports {
|
|
return ""
|
|
}
|
|
abiStr := `[`
|
|
args[0] = constants.AddrChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.AddrChangeInterface + ","
|
|
}
|
|
args[0] = constants.NameChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.NameChangeInterface + ","
|
|
}
|
|
args[0] = constants.ContentChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.ContentChangeInterface + ","
|
|
}
|
|
args[0] = constants.AbiChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.AbiChangeInterface + ","
|
|
}
|
|
args[0] = constants.PubkeyChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.PubkeyChangeInterface + ","
|
|
}
|
|
args[0] = constants.ContentHashChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.ContenthashChangeInterface + ","
|
|
}
|
|
args[0] = constants.MultihashChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.MultihashChangeInterface + ","
|
|
}
|
|
args[0] = constants.TextChangeSig.Bytes()
|
|
supports, err = g.getSupportsInterface(a, resolverAddr, blockNumber, args)
|
|
if err == nil && supports {
|
|
abiStr += constants.TextChangeInterface + ","
|
|
}
|
|
abiStr = abiStr[:len(abiStr)-1] + `]`
|
|
|
|
return abiStr
|
|
}
|
|
|
|
// Use this method to check whether or not a contract supports a given method/event interface
|
|
func (g *interfaceGetter) getSupportsInterface(contractAbi, contractAddress string, blockNumber int64, methodArgs []interface{}) (bool, error) {
|
|
return g.Fetcher.FetchBool("supportsInterface", contractAbi, contractAddress, blockNumber, methodArgs)
|
|
}
|
|
|
|
// Method to retrieve the Getter's blockchain
|
|
func (g *interfaceGetter) GetBlockChain() core.BlockChain {
|
|
return g.Fetcher.BlockChain
|
|
}
|