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move interface_getter.go from ens_watcher to vDB pkging- used to construct a custom ABI based on results from calls to supportsInterface; also moved fetcher.go from examples to pkg

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This commit is contained in:
Ian Norden 2019-01-15 15:49:18 -06:00
parent 59cdaa05e6
commit aa4e698240
10 changed files with 342 additions and 12 deletions
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6
examples/erc20_watcher/every_block/getter.go
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@ -19,8 +19,8 @@ package every_block
import (
"math/big"
"github.com/vulcanize/vulcanizedb/examples/generic"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/omni/shared/fetcher"
)
// Getter serves as a higher level data fetcher that invokes its underlying Fetcher methods for a given contract method
@ -35,13 +35,13 @@ type ERC20GetterInterface interface {
// Getter struct
type ERC20Getter struct {
generic.Fetcher
fetcher.Fetcher
}
// Initializes and returns a Getter with the given blockchain
func NewGetter(blockChain core.BlockChain) ERC20Getter {
return ERC20Getter{
Fetcher: generic.Fetcher{
Fetcher: fetcher.Fetcher{
BlockChain: blockChain,
},
}

6
examples/generic/every_block/getter.go
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@ -17,12 +17,12 @@
package every_block
import (
"github.com/vulcanize/vulcanizedb/examples/generic"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/vulcanize/vulcanizedb/pkg/core"
"github.com/vulcanize/vulcanizedb/pkg/omni/shared/fetcher"
)
// Getter serves as a higher level data fetcher that invokes its underlying Fetcher methods for a given contract method
@ -41,13 +41,13 @@ type GenericGetterInterface interface {
// Getter struct
type GenericGetter struct {
generic.Fetcher // Underlying Fetcher
fetcher.Fetcher // Underlying Fetcher
}
// Initializes and returns a Getter with the given blockchain
func NewGetter(blockChain core.BlockChain) GenericGetter {
return GenericGetter{
Fetcher: generic.Fetcher{
Fetcher: fetcher.Fetcher{
BlockChain: blockChain,
},
}

1
pkg/omni/shared/constants/constants.go
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@ -70,6 +70,7 @@ func (e Event) Signature() string {
var DaiContractAddress = "0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359"
var TusdContractAddress = "0x8dd5fbCe2F6a956C3022bA3663759011Dd51e73E"
var EnsContractAddress = "0x314159265dD8dbb310642f98f50C066173C1259b"
var PublicResolverAddress = "0x1da022710dF5002339274AaDEe8D58218e9D6AB5"
// Contract Owner
var DaiContractOwner = "0x0000000000000000000000000000000000000000"

127
pkg/omni/shared/constants/interface.go Normal file
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@ -0,0 +1,127 @@
// VulcanizeDB
// Copyright © 2018 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 constants
import (
"github.com/ethereum/go-ethereum/common/hexutil"
)
// Basic abi needed to check which interfaces are adhered to
var SupportsInterfaceABI = `[{"constant":true,"inputs":[{"name":"interfaceID","type":"bytes4"}],"name":"supportsInterface","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}]`
// Individual event interfaces for constructing ABI from
var SupportsInterace = `{"constant":true,"inputs":[{"name":"interfaceID","type":"bytes4"}],"name":"supportsInterface","outputs":[{"name":"","type":"bool"}],"payable":false,"type":"function"}`
var AddrChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"a","type":"address"}],"name":"AddrChanged","type":"event"}`
var ContentChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"hash","type":"bytes32"}],"name":"ContentChanged","type":"event"}`
var NameChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"name","type":"string"}],"name":"NameChanged","type":"event"}`
var AbiChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":true,"name":"contentType","type":"uint256"}],"name":"ABIChanged","type":"event"}`
var PubkeyChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"x","type":"bytes32"},{"indexed":false,"name":"y","type":"bytes32"}],"name":"PubkeyChanged","type":"event"}`
var TextChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"indexedKey","type":"string"},{"indexed":false,"name":"key","type":"string"}],"name":"TextChanged","type":"event"}`
var MultihashChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"hash","type":"bytes"}],"name":"MultihashChanged","type":"event"}`
var ContenthashChangeInterface = `{"anonymous":false,"inputs":[{"indexed":true,"name":"node","type":"bytes32"},{"indexed":false,"name":"hash","type":"bytes"}],"name":"ContenthashChanged","type":"event"}`
var StartingBlock = int64(3648359)
// Resolver interface signatures
type Interface int
const (
MetaSig Interface = iota
AddrChangeSig
ContentChangeSig
NameChangeSig
AbiChangeSig
PubkeyChangeSig
TextChangeSig
MultihashChangeSig
ContentHashChangeSig
)
func (e Interface) Hex() string {
strings := [...]string{
"0x01ffc9a7",
"0x3b3b57de",
"0xd8389dc5",
"0x691f3431",
"0x2203ab56",
"0xc8690233",
"0x59d1d43c",
"0xe89401a1",
"0xbc1c58d1",
}
if e < MetaSig || e > ContentHashChangeSig {
return "Unknown"
}
return strings[e]
}
func (e Interface) Bytes() [4]uint8 {
if e < MetaSig || e > ContentHashChangeSig {
return [4]byte{}
}
str := e.Hex()
by, _ := hexutil.Decode(str)
var byArray [4]uint8
for i := 0; i < 4; i++ {
byArray[i] = by[i]
}
return byArray
}
func (e Interface) EventSig() string {
strings := [...]string{
"",
"AddrChanged(bytes32,address)",
"ContentChanged(bytes32,bytes32)",
"NameChanged(bytes32,string)",
"ABIChanged(bytes32,uint256)",
"PubkeyChanged(bytes32,bytes32,bytes32)",
"TextChanged(bytes32,string,string)",
"MultihashChanged(bytes32,bytes)",
"ContenthashChanged(bytes32,bytes)",
}
if e < MetaSig || e > ContentHashChangeSig {
return "Unknown"
}
return strings[e]
}
func (e Interface) MethodSig() string {
strings := [...]string{
"supportsInterface(bytes4)",
"addr(bytes32)",
"content(bytes32)",
"name(bytes32)",
"ABI(bytes32,uint256)",
"pubkey(bytes32)",
"text(bytes32,string)",
"multihash(bytes32)",
"setContenthash(bytes32,bytes)",
}
if e < MetaSig || e > ContentHashChangeSig {
return "Unknown"
}
return strings[e]
}

2
examples/generic/fetcher.go → pkg/omni/shared/fetcher/fetcher.go
View File

@ -12,7 +12,7 @@
// See the License for the specific language governing permissions and
// limitations under the License.
package generic
package fetcher
import (
"fmt"

35
pkg/omni/shared/getter/getter_suite_test.go Normal file
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@ -0,0 +1,35 @@
// VulcanizeDB
// Copyright © 2018 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_test
import (
"io/ioutil"
"log"
"testing"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
func TestRepository(t *testing.T) {
RegisterFailHandler(Fail)
RunSpecs(t, "Getter Suite Test")
}
var _ = BeforeSuite(func() {
log.SetOutput(ioutil.Discard)
})

55
pkg/omni/shared/getter/getter_test.go Normal file
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@ -0,0 +1,55 @@
// VulcanizeDB
// Copyright © 2018 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_test
import (
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/rpc"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
"github.com/vulcanize/vulcanizedb/pkg/geth"
"github.com/vulcanize/vulcanizedb/pkg/geth/client"
rpc2 "github.com/vulcanize/vulcanizedb/pkg/geth/converters/rpc"
"github.com/vulcanize/vulcanizedb/pkg/geth/node"
"github.com/vulcanize/vulcanizedb/pkg/omni/shared/constants"
"github.com/vulcanize/vulcanizedb/pkg/omni/shared/getter"
)
var _ = Describe("Interface Getter", func() {
Describe("GetAbi", func() {
It("Constructs and returns a custom abi based on results from supportsInterface calls", func() {
expectedABI := `[` + constants.AddrChangeInterface + `,` + constants.NameChangeInterface + `,` + constants.ContentChangeInterface + `,` + constants.AbiChangeInterface + `,` + constants.PubkeyChangeInterface + `]`
blockNumber := int64(6885696)
infuraIPC := "https://mainnet.infura.io/v3/b09888c1113640cc9ab42750ce750c05"
rawRpcClient, err := rpc.Dial(infuraIPC)
Expect(err).NotTo(HaveOccurred())
rpcClient := client.NewRpcClient(rawRpcClient, infuraIPC)
ethClient := ethclient.NewClient(rawRpcClient)
blockChainClient := client.NewEthClient(ethClient)
node := node.MakeNode(rpcClient)
transactionConverter := rpc2.NewRpcTransactionConverter(ethClient)
blockChain := geth.NewBlockChain(blockChainClient, rpcClient, node, transactionConverter)
interfaceGetter := getter.NewInterfaceGetter(blockChain)
abi := interfaceGetter.GetABI(constants.PublicResolverAddress, blockNumber)
Expect(abi).To(Equal(expectedABI))
_, err = geth.ParseAbi(abi)
Expect(err).ToNot(HaveOccurred())
})
})
})

105
pkg/omni/shared/getter/interface_getter.go Normal file
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@ -0,0 +1,105 @@
// VulcanizeDB
// Copyright © 2018 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/core"
"github.com/vulcanize/vulcanizedb/pkg/omni/shared/constants"
"github.com/vulcanize/vulcanizedb/pkg/omni/shared/fetcher"
)
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
}

7
pkg/omni/shared/helpers/test_helpers/database.go
View File

@ -245,9 +245,6 @@ func TearDown(db *postgres.DB) {
_, err = tx.Exec(`DELETE FROM headers`)
Expect(err).NotTo(HaveOccurred())
_, err = tx.Exec(`DELETE FROM checked_headers`)
Expect(err).NotTo(HaveOccurred())
_, err = tx.Exec(`DELETE FROM logs`)
Expect(err).NotTo(HaveOccurred())
@ -260,10 +257,10 @@ func TearDown(db *postgres.DB) {
_, err = tx.Exec(`DELETE FROM receipts`)
Expect(err).NotTo(HaveOccurred())
_, err = tx.Exec(`DROP TABLE public.checked_headers`)
_, err = tx.Exec(`DROP TABLE checked_headers`)
Expect(err).NotTo(HaveOccurred())
_, err = tx.Exec(`CREATE TABLE public.checked_headers (id SERIAL PRIMARY KEY, header_id INTEGER UNIQUE NOT NULL REFERENCES headers (id) ON DELETE CASCADE);`)
_, err = tx.Exec(`CREATE TABLE checked_headers (id SERIAL PRIMARY KEY, header_id INTEGER UNIQUE NOT NULL REFERENCES headers (id) ON DELETE CASCADE);`)
Expect(err).NotTo(HaveOccurred())
_, err = tx.Exec(`DROP SCHEMA IF EXISTS full_0x8dd5fbce2f6a956c3022ba3663759011dd51e73e CASCADE`)

10
pkg/omni/shared/parser/parser.go
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@ -31,6 +31,7 @@ import (
// It is dependent on etherscan's api
type Parser interface {
Parse(contractAddr string) error
ParseAbiStr(abiStr string) error
Abi() string
ParsedAbi() abi.ABI
GetMethods(wanted []string) []types.Method
@ -83,6 +84,15 @@ func (p *parser) Parse(contractAddr string) error {
return err
}
// Loads and parses an abi from a given abi string
func (p *parser) ParseAbiStr(abiStr string) error {
var err error
p.abi = abiStr
p.parsedAbi, err = geth.ParseAbi(abiStr)
return err
}
func (p *parser) lookUp(contractAddr string) (string, error) {
if v, ok := constants.Abis[common.HexToAddress(contractAddr)]; ok {
return v, nil