85 lines
3.4 KiB
Go
85 lines
3.4 KiB
Go
// Copyright 2018 Vulcanize
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package every_block
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/vulcanize/vulcanizedb/examples/generic"
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"github.com/vulcanize/vulcanizedb/pkg/core"
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"math/big"
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)
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// Getter serves as a higher level data fetcher that invokes its underlying Fetcher methods for a given contract method
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// Interface definition for a Getter
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type GenericGetterInterface interface {
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GetOwner(contractAbi, contractAddress string, blockNumber int64) (common.Address, error)
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GetStoppedStatus(contractAbi, contractAddress string, blockNumber int64) (bool, error)
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GetStringName(contractAbi, contractAddress string, blockNumber int64) (string, error)
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GetHashName(contractAbi, contractAddress string, blockNumber int64) (common.Hash, error)
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GetStringSymbol(contractAbi, contractAddress string, blockNumber int64) (string, error)
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GetHashSymbol(contractAbi, contractAddress string, blockNumber int64) (common.Hash, error)
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GetDecimals(contractAbi, contractAddress string, blockNumber int64) (big.Int, error)
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GetBlockChain() core.BlockChain
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}
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// Getter struct
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type Getter struct {
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fetcher generic.Fetcher // Underlying Fetcher
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}
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// Initializes and returns a Getter with the given blockchain
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func NewGetter(blockChain core.BlockChain) Getter {
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return Getter{
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fetcher: generic.Fetcher{
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BlockChain: blockChain,
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},
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}
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}
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// Public getter methods for calling contract methods
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func (g Getter) GetOwner(contractAbi, contractAddress string, blockNumber int64) (common.Address, error) {
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return g.fetcher.FetchAddress("owner", contractAbi, contractAddress, blockNumber, nil)
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}
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func (g Getter) GetStoppedStatus(contractAbi, contractAddress string, blockNumber int64) (bool, error) {
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return g.fetcher.FetchBool("stopped", contractAbi, contractAddress, blockNumber, nil)
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}
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func (g Getter) GetStringName(contractAbi, contractAddress string, blockNumber int64) (string, error) {
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return g.fetcher.FetchString("name", contractAbi, contractAddress, blockNumber, nil)
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}
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func (g Getter) GetHashName(contractAbi, contractAddress string, blockNumber int64) (common.Hash, error) {
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return g.fetcher.FetchHash("name", contractAbi, contractAddress, blockNumber, nil)
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}
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func (g Getter) GetStringSymbol(contractAbi, contractAddress string, blockNumber int64) (string, error) {
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return g.fetcher.FetchString("symbol", contractAbi, contractAddress, blockNumber, nil)
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}
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func (g Getter) GetHashSymbol(contractAbi, contractAddress string, blockNumber int64) (common.Hash, error) {
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return g.fetcher.FetchHash("symbol", contractAbi, contractAddress, blockNumber, nil)
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}
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func (g Getter) GetDecimals(contractAbi, contractAddress string, blockNumber int64) (big.Int, error) {
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return g.fetcher.FetchBigInt("decimals", contractAbi, contractAddress, blockNumber, nil)
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}
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// Method to retrieve the Getter's blockchain
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func (g Getter) GetBlockChain() core.BlockChain {
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return g.fetcher.BlockChain
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}
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