initial commit

This commit is contained in:
Hendrik Hofstadt 2020-01-23 23:09:21 +01:00
commit 91cf081eda
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.idea
*.iml
bin
generated

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FROM golang:stretch as builder
COPY . /opt
WORKDIR /opt
RUN make build
FROM scratch
COPY --from=builder /opt/bin/chainlink_exporter /
CMD ["/chainlink_exporter"]

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abi/aggregator.go: contracts/Aggregator.abi
abigen --abi ./contracts/Aggregator.abi --pkg abi --type Aggregator --out abi/aggregator.go
abi/oracle.go: contracts/Oracle.abi
abigen --abi ./contracts/Oracle.abi --pkg abi --type Oracle --out abi/oracle.go
abi/link.go: contracts/LinkToken.abi
abigen --abi ./contracts/LinkToken.abi --pkg abi --type ERC --out abi/link.go
.PHONY: abi
abi: abi/aggregator.go abi/oracle.go abi/link.go
.PHONY: build
build: abi
CGO_ENABLED=0 go build -o bin/chainlink_exporter ./cmd/chainlink_exporter

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## Chainlink oracle exporter
This prometheus exporter watches a Chainlink oracle smart contract on the Ethereum blockchain and measures metrics on
request fulfillment.
In order to track whether the exporter is alive and following the chain we export `cl_mon_height` which indicates the
last block the exporter has seen.
### How to build
Running `make build` will build artifacts to `bin`.
The `Dockerfile` can also be used to build a container.
We provide a prebuilt container image on [DockerHub](https://hub.docker.com/r/certusone/chainlink_exporter): `certusone/chainlink_exporter`
### Configuration
The configuration needs to be passed in via the environment.
| Name | Description |
|------|-------------|
| LADDR | Listening address (e.g. `:8080`).
| RPC | Websocket URL of the ethereum node to connect to. |
| ADDRESS | The address of the oracle contract to watch. |
| NODE_ADDRESS | The address of the node that's fulfilling the requests. |
| LINK_ADDRESS | The address of the LINK ERC20 token contract. Defaults to the mainnet contract. |
### Metrics
| Name | Type | Description |
|------|-------------|----------|
| cl_mon_height | gauge | Last processed block number. |
| cl_mon_last_request | gauge | Block number in which the last request was received. |
| cl_mon_last_response | gauge | Block number in which the last response was sent from the oracle. |
| cl_mon_response_time_bucket | histogram | Number of blocks taken to fulfill requests. Histograms are partitioned by the label `spec_id`. |
| cl_mon_missed | counter | Number of missed requests. Labels indicate job/spec id, requester address. |
| cl_mon_fulfilled | counter | Number of fulfilled requests. Labels indicate job/spec id, requester address. |
| cl_mon_rewards | counter | Rewards collected in LINK. Labels indicate job/spec id, requester address and whether the request containing this payment was fulfilled successfully. **Only payments of fulfilled requests are withdrawable.** |
| cl_mon_eth_balance | gauge | Eth balance of the node account. |
| cl_mon_link_balance | gauge | LINK balance of the oracle contract. The value with `type=balance` is the ERC20 balance. The value with `type=withdrawable` is the withdrawable balance. |
### Error handling
In case of errors during startup the program will panic. Errors during runtime are printed to the console and might
lead to the exporter not processing blocks. This will be visible in prometheus as `cl_mon_height` will stop increasing.
The client will automatically try to reconnect and -subscribe once the endpoint becomes available again.

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// Code generated - DO NOT EDIT.
// This file is a generated binding and any manual changes will be lost.
package abi
import (
"math/big"
"strings"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
)
// Reference imports to suppress errors if they are not otherwise used.
var (
_ = big.NewInt
_ = strings.NewReader
_ = ethereum.NotFound
_ = abi.U256
_ = bind.Bind
_ = common.Big1
_ = types.BloomLookup
_ = event.NewSubscription
)
// ERCABI is the input ABI used to generate the binding from.
const ERCABI = "[{\"constant\":true,\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_spender\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_from\",\"type\":\"address\"},{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"name\":\"\",\"type\":\"uint8\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"},{\"name\":\"_data\",\"type\":\"bytes\"}],\"name\":\"transferAndCall\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_spender\",\"type\":\"address\"},{\"name\":\"_subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseApproval\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"name\":\"\",\"type\":\"string\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_to\",\"type\":\"address\"},{\"name\":\"_value\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_spender\",\"type\":\"address\"},{\"name\":\"_addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseApproval\",\"outputs\":[{\"name\":\"success\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"_owner\",\"type\":\"address\"},{\"name\":\"_spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"name\":\"remaining\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"data\",\"type\":\"bytes\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"}]"
// ERC is an auto generated Go binding around an Ethereum contract.
type ERC struct {
ERCCaller // Read-only binding to the contract
ERCTransactor // Write-only binding to the contract
ERCFilterer // Log filterer for contract events
}
// ERCCaller is an auto generated read-only Go binding around an Ethereum contract.
type ERCCaller struct {
contract *bind.BoundContract // Generic contract wrapper for the low level calls
}
// ERCTransactor is an auto generated write-only Go binding around an Ethereum contract.
type ERCTransactor struct {
contract *bind.BoundContract // Generic contract wrapper for the low level calls
}
// ERCFilterer is an auto generated log filtering Go binding around an Ethereum contract events.
type ERCFilterer struct {
contract *bind.BoundContract // Generic contract wrapper for the low level calls
}
// ERCSession is an auto generated Go binding around an Ethereum contract,
// with pre-set call and transact options.
type ERCSession struct {
Contract *ERC // Generic contract binding to set the session for
CallOpts bind.CallOpts // Call options to use throughout this session
TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
}
// ERCCallerSession is an auto generated read-only Go binding around an Ethereum contract,
// with pre-set call options.
type ERCCallerSession struct {
Contract *ERCCaller // Generic contract caller binding to set the session for
CallOpts bind.CallOpts // Call options to use throughout this session
}
// ERCTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
// with pre-set transact options.
type ERCTransactorSession struct {
Contract *ERCTransactor // Generic contract transactor binding to set the session for
TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
}
// ERCRaw is an auto generated low-level Go binding around an Ethereum contract.
type ERCRaw struct {
Contract *ERC // Generic contract binding to access the raw methods on
}
// ERCCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
type ERCCallerRaw struct {
Contract *ERCCaller // Generic read-only contract binding to access the raw methods on
}
// ERCTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
type ERCTransactorRaw struct {
Contract *ERCTransactor // Generic write-only contract binding to access the raw methods on
}
// NewERC creates a new instance of ERC, bound to a specific deployed contract.
func NewERC(address common.Address, backend bind.ContractBackend) (*ERC, error) {
contract, err := bindERC(address, backend, backend, backend)
if err != nil {
return nil, err
}
return &ERC{ERCCaller: ERCCaller{contract: contract}, ERCTransactor: ERCTransactor{contract: contract}, ERCFilterer: ERCFilterer{contract: contract}}, nil
}
// NewERCCaller creates a new read-only instance of ERC, bound to a specific deployed contract.
func NewERCCaller(address common.Address, caller bind.ContractCaller) (*ERCCaller, error) {
contract, err := bindERC(address, caller, nil, nil)
if err != nil {
return nil, err
}
return &ERCCaller{contract: contract}, nil
}
// NewERCTransactor creates a new write-only instance of ERC, bound to a specific deployed contract.
func NewERCTransactor(address common.Address, transactor bind.ContractTransactor) (*ERCTransactor, error) {
contract, err := bindERC(address, nil, transactor, nil)
if err != nil {
return nil, err
}
return &ERCTransactor{contract: contract}, nil
}
// NewERCFilterer creates a new log filterer instance of ERC, bound to a specific deployed contract.
func NewERCFilterer(address common.Address, filterer bind.ContractFilterer) (*ERCFilterer, error) {
contract, err := bindERC(address, nil, nil, filterer)
if err != nil {
return nil, err
}
return &ERCFilterer{contract: contract}, nil
}
// bindERC binds a generic wrapper to an already deployed contract.
func bindERC(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
parsed, err := abi.JSON(strings.NewReader(ERCABI))
if err != nil {
return nil, err
}
return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
}
// Call invokes the (constant) contract method with params as input values and
// sets the output to result. The result type might be a single field for simple
// returns, a slice of interfaces for anonymous returns and a struct for named
// returns.
func (_ERC *ERCRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
return _ERC.Contract.ERCCaller.contract.Call(opts, result, method, params...)
}
// Transfer initiates a plain transaction to move funds to the contract, calling
// its default method if one is available.
func (_ERC *ERCRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
return _ERC.Contract.ERCTransactor.contract.Transfer(opts)
}
// Transact invokes the (paid) contract method with params as input values.
func (_ERC *ERCRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
return _ERC.Contract.ERCTransactor.contract.Transact(opts, method, params...)
}
// Call invokes the (constant) contract method with params as input values and
// sets the output to result. The result type might be a single field for simple
// returns, a slice of interfaces for anonymous returns and a struct for named
// returns.
func (_ERC *ERCCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
return _ERC.Contract.contract.Call(opts, result, method, params...)
}
// Transfer initiates a plain transaction to move funds to the contract, calling
// its default method if one is available.
func (_ERC *ERCTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
return _ERC.Contract.contract.Transfer(opts)
}
// Transact invokes the (paid) contract method with params as input values.
func (_ERC *ERCTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
return _ERC.Contract.contract.Transact(opts, method, params...)
}
// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
//
// Solidity: function allowance(address _owner, address _spender) constant returns(uint256 remaining)
func (_ERC *ERCCaller) Allowance(opts *bind.CallOpts, _owner common.Address, _spender common.Address) (*big.Int, error) {
var (
ret0 = new(*big.Int)
)
out := ret0
err := _ERC.contract.Call(opts, out, "allowance", _owner, _spender)
return *ret0, err
}
// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
//
// Solidity: function allowance(address _owner, address _spender) constant returns(uint256 remaining)
func (_ERC *ERCSession) Allowance(_owner common.Address, _spender common.Address) (*big.Int, error) {
return _ERC.Contract.Allowance(&_ERC.CallOpts, _owner, _spender)
}
// Allowance is a free data retrieval call binding the contract method 0xdd62ed3e.
//
// Solidity: function allowance(address _owner, address _spender) constant returns(uint256 remaining)
func (_ERC *ERCCallerSession) Allowance(_owner common.Address, _spender common.Address) (*big.Int, error) {
return _ERC.Contract.Allowance(&_ERC.CallOpts, _owner, _spender)
}
// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
//
// Solidity: function balanceOf(address _owner) constant returns(uint256 balance)
func (_ERC *ERCCaller) BalanceOf(opts *bind.CallOpts, _owner common.Address) (*big.Int, error) {
var (
ret0 = new(*big.Int)
)
out := ret0
err := _ERC.contract.Call(opts, out, "balanceOf", _owner)
return *ret0, err
}
// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
//
// Solidity: function balanceOf(address _owner) constant returns(uint256 balance)
func (_ERC *ERCSession) BalanceOf(_owner common.Address) (*big.Int, error) {
return _ERC.Contract.BalanceOf(&_ERC.CallOpts, _owner)
}
// BalanceOf is a free data retrieval call binding the contract method 0x70a08231.
//
// Solidity: function balanceOf(address _owner) constant returns(uint256 balance)
func (_ERC *ERCCallerSession) BalanceOf(_owner common.Address) (*big.Int, error) {
return _ERC.Contract.BalanceOf(&_ERC.CallOpts, _owner)
}
// Decimals is a free data retrieval call binding the contract method 0x313ce567.
//
// Solidity: function decimals() constant returns(uint8)
func (_ERC *ERCCaller) Decimals(opts *bind.CallOpts) (uint8, error) {
var (
ret0 = new(uint8)
)
out := ret0
err := _ERC.contract.Call(opts, out, "decimals")
return *ret0, err
}
// Decimals is a free data retrieval call binding the contract method 0x313ce567.
//
// Solidity: function decimals() constant returns(uint8)
func (_ERC *ERCSession) Decimals() (uint8, error) {
return _ERC.Contract.Decimals(&_ERC.CallOpts)
}
// Decimals is a free data retrieval call binding the contract method 0x313ce567.
//
// Solidity: function decimals() constant returns(uint8)
func (_ERC *ERCCallerSession) Decimals() (uint8, error) {
return _ERC.Contract.Decimals(&_ERC.CallOpts)
}
// Name is a free data retrieval call binding the contract method 0x06fdde03.
//
// Solidity: function name() constant returns(string)
func (_ERC *ERCCaller) Name(opts *bind.CallOpts) (string, error) {
var (
ret0 = new(string)
)
out := ret0
err := _ERC.contract.Call(opts, out, "name")
return *ret0, err
}
// Name is a free data retrieval call binding the contract method 0x06fdde03.
//
// Solidity: function name() constant returns(string)
func (_ERC *ERCSession) Name() (string, error) {
return _ERC.Contract.Name(&_ERC.CallOpts)
}
// Name is a free data retrieval call binding the contract method 0x06fdde03.
//
// Solidity: function name() constant returns(string)
func (_ERC *ERCCallerSession) Name() (string, error) {
return _ERC.Contract.Name(&_ERC.CallOpts)
}
// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
//
// Solidity: function symbol() constant returns(string)
func (_ERC *ERCCaller) Symbol(opts *bind.CallOpts) (string, error) {
var (
ret0 = new(string)
)
out := ret0
err := _ERC.contract.Call(opts, out, "symbol")
return *ret0, err
}
// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
//
// Solidity: function symbol() constant returns(string)
func (_ERC *ERCSession) Symbol() (string, error) {
return _ERC.Contract.Symbol(&_ERC.CallOpts)
}
// Symbol is a free data retrieval call binding the contract method 0x95d89b41.
//
// Solidity: function symbol() constant returns(string)
func (_ERC *ERCCallerSession) Symbol() (string, error) {
return _ERC.Contract.Symbol(&_ERC.CallOpts)
}
// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
//
// Solidity: function totalSupply() constant returns(uint256)
func (_ERC *ERCCaller) TotalSupply(opts *bind.CallOpts) (*big.Int, error) {
var (
ret0 = new(*big.Int)
)
out := ret0
err := _ERC.contract.Call(opts, out, "totalSupply")
return *ret0, err
}
// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
//
// Solidity: function totalSupply() constant returns(uint256)
func (_ERC *ERCSession) TotalSupply() (*big.Int, error) {
return _ERC.Contract.TotalSupply(&_ERC.CallOpts)
}
// TotalSupply is a free data retrieval call binding the contract method 0x18160ddd.
//
// Solidity: function totalSupply() constant returns(uint256)
func (_ERC *ERCCallerSession) TotalSupply() (*big.Int, error) {
return _ERC.Contract.TotalSupply(&_ERC.CallOpts)
}
// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
//
// Solidity: function approve(address _spender, uint256 _value) returns(bool)
func (_ERC *ERCTransactor) Approve(opts *bind.TransactOpts, _spender common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.contract.Transact(opts, "approve", _spender, _value)
}
// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
//
// Solidity: function approve(address _spender, uint256 _value) returns(bool)
func (_ERC *ERCSession) Approve(_spender common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.Contract.Approve(&_ERC.TransactOpts, _spender, _value)
}
// Approve is a paid mutator transaction binding the contract method 0x095ea7b3.
//
// Solidity: function approve(address _spender, uint256 _value) returns(bool)
func (_ERC *ERCTransactorSession) Approve(_spender common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.Contract.Approve(&_ERC.TransactOpts, _spender, _value)
}
// DecreaseApproval is a paid mutator transaction binding the contract method 0x66188463.
//
// Solidity: function decreaseApproval(address _spender, uint256 _subtractedValue) returns(bool success)
func (_ERC *ERCTransactor) DecreaseApproval(opts *bind.TransactOpts, _spender common.Address, _subtractedValue *big.Int) (*types.Transaction, error) {
return _ERC.contract.Transact(opts, "decreaseApproval", _spender, _subtractedValue)
}
// DecreaseApproval is a paid mutator transaction binding the contract method 0x66188463.
//
// Solidity: function decreaseApproval(address _spender, uint256 _subtractedValue) returns(bool success)
func (_ERC *ERCSession) DecreaseApproval(_spender common.Address, _subtractedValue *big.Int) (*types.Transaction, error) {
return _ERC.Contract.DecreaseApproval(&_ERC.TransactOpts, _spender, _subtractedValue)
}
// DecreaseApproval is a paid mutator transaction binding the contract method 0x66188463.
//
// Solidity: function decreaseApproval(address _spender, uint256 _subtractedValue) returns(bool success)
func (_ERC *ERCTransactorSession) DecreaseApproval(_spender common.Address, _subtractedValue *big.Int) (*types.Transaction, error) {
return _ERC.Contract.DecreaseApproval(&_ERC.TransactOpts, _spender, _subtractedValue)
}
// IncreaseApproval is a paid mutator transaction binding the contract method 0xd73dd623.
//
// Solidity: function increaseApproval(address _spender, uint256 _addedValue) returns(bool success)
func (_ERC *ERCTransactor) IncreaseApproval(opts *bind.TransactOpts, _spender common.Address, _addedValue *big.Int) (*types.Transaction, error) {
return _ERC.contract.Transact(opts, "increaseApproval", _spender, _addedValue)
}
// IncreaseApproval is a paid mutator transaction binding the contract method 0xd73dd623.
//
// Solidity: function increaseApproval(address _spender, uint256 _addedValue) returns(bool success)
func (_ERC *ERCSession) IncreaseApproval(_spender common.Address, _addedValue *big.Int) (*types.Transaction, error) {
return _ERC.Contract.IncreaseApproval(&_ERC.TransactOpts, _spender, _addedValue)
}
// IncreaseApproval is a paid mutator transaction binding the contract method 0xd73dd623.
//
// Solidity: function increaseApproval(address _spender, uint256 _addedValue) returns(bool success)
func (_ERC *ERCTransactorSession) IncreaseApproval(_spender common.Address, _addedValue *big.Int) (*types.Transaction, error) {
return _ERC.Contract.IncreaseApproval(&_ERC.TransactOpts, _spender, _addedValue)
}
// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
//
// Solidity: function transfer(address _to, uint256 _value) returns(bool success)
func (_ERC *ERCTransactor) Transfer(opts *bind.TransactOpts, _to common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.contract.Transact(opts, "transfer", _to, _value)
}
// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
//
// Solidity: function transfer(address _to, uint256 _value) returns(bool success)
func (_ERC *ERCSession) Transfer(_to common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.Contract.Transfer(&_ERC.TransactOpts, _to, _value)
}
// Transfer is a paid mutator transaction binding the contract method 0xa9059cbb.
//
// Solidity: function transfer(address _to, uint256 _value) returns(bool success)
func (_ERC *ERCTransactorSession) Transfer(_to common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.Contract.Transfer(&_ERC.TransactOpts, _to, _value)
}
// TransferAndCall is a paid mutator transaction binding the contract method 0x4000aea0.
//
// Solidity: function transferAndCall(address _to, uint256 _value, bytes _data) returns(bool success)
func (_ERC *ERCTransactor) TransferAndCall(opts *bind.TransactOpts, _to common.Address, _value *big.Int, _data []byte) (*types.Transaction, error) {
return _ERC.contract.Transact(opts, "transferAndCall", _to, _value, _data)
}
// TransferAndCall is a paid mutator transaction binding the contract method 0x4000aea0.
//
// Solidity: function transferAndCall(address _to, uint256 _value, bytes _data) returns(bool success)
func (_ERC *ERCSession) TransferAndCall(_to common.Address, _value *big.Int, _data []byte) (*types.Transaction, error) {
return _ERC.Contract.TransferAndCall(&_ERC.TransactOpts, _to, _value, _data)
}
// TransferAndCall is a paid mutator transaction binding the contract method 0x4000aea0.
//
// Solidity: function transferAndCall(address _to, uint256 _value, bytes _data) returns(bool success)
func (_ERC *ERCTransactorSession) TransferAndCall(_to common.Address, _value *big.Int, _data []byte) (*types.Transaction, error) {
return _ERC.Contract.TransferAndCall(&_ERC.TransactOpts, _to, _value, _data)
}
// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
//
// Solidity: function transferFrom(address _from, address _to, uint256 _value) returns(bool)
func (_ERC *ERCTransactor) TransferFrom(opts *bind.TransactOpts, _from common.Address, _to common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.contract.Transact(opts, "transferFrom", _from, _to, _value)
}
// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
//
// Solidity: function transferFrom(address _from, address _to, uint256 _value) returns(bool)
func (_ERC *ERCSession) TransferFrom(_from common.Address, _to common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.Contract.TransferFrom(&_ERC.TransactOpts, _from, _to, _value)
}
// TransferFrom is a paid mutator transaction binding the contract method 0x23b872dd.
//
// Solidity: function transferFrom(address _from, address _to, uint256 _value) returns(bool)
func (_ERC *ERCTransactorSession) TransferFrom(_from common.Address, _to common.Address, _value *big.Int) (*types.Transaction, error) {
return _ERC.Contract.TransferFrom(&_ERC.TransactOpts, _from, _to, _value)
}
// ERCApprovalIterator is returned from FilterApproval and is used to iterate over the raw logs and unpacked data for Approval events raised by the ERC contract.
type ERCApprovalIterator struct {
Event *ERCApproval // Event containing the contract specifics and raw log
contract *bind.BoundContract // Generic contract to use for unpacking event data
event string // Event name to use for unpacking event data
logs chan types.Log // Log channel receiving the found contract events
sub ethereum.Subscription // Subscription for errors, completion and termination
done bool // Whether the subscription completed delivering logs
fail error // Occurred error to stop iteration
}
// Next advances the iterator to the subsequent event, returning whether there
// are any more events found. In case of a retrieval or parsing error, false is
// returned and Error() can be queried for the exact failure.
func (it *ERCApprovalIterator) Next() bool {
// If the iterator failed, stop iterating
if it.fail != nil {
return false
}
// If the iterator completed, deliver directly whatever's available
if it.done {
select {
case log := <-it.logs:
it.Event = new(ERCApproval)
if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
it.fail = err
return false
}
it.Event.Raw = log
return true
default:
return false
}
}
// Iterator still in progress, wait for either a data or an error event
select {
case log := <-it.logs:
it.Event = new(ERCApproval)
if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
it.fail = err
return false
}
it.Event.Raw = log
return true
case err := <-it.sub.Err():
it.done = true
it.fail = err
return it.Next()
}
}
// Error returns any retrieval or parsing error occurred during filtering.
func (it *ERCApprovalIterator) Error() error {
return it.fail
}
// Close terminates the iteration process, releasing any pending underlying
// resources.
func (it *ERCApprovalIterator) Close() error {
it.sub.Unsubscribe()
return nil
}
// ERCApproval represents a Approval event raised by the ERC contract.
type ERCApproval struct {
Owner common.Address
Spender common.Address
Value *big.Int
Raw types.Log // Blockchain specific contextual infos
}
// FilterApproval is a free log retrieval operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
//
// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
func (_ERC *ERCFilterer) FilterApproval(opts *bind.FilterOpts, owner []common.Address, spender []common.Address) (*ERCApprovalIterator, error) {
var ownerRule []interface{}
for _, ownerItem := range owner {
ownerRule = append(ownerRule, ownerItem)
}
var spenderRule []interface{}
for _, spenderItem := range spender {
spenderRule = append(spenderRule, spenderItem)
}
logs, sub, err := _ERC.contract.FilterLogs(opts, "Approval", ownerRule, spenderRule)
if err != nil {
return nil, err
}
return &ERCApprovalIterator{contract: _ERC.contract, event: "Approval", logs: logs, sub: sub}, nil
}
// WatchApproval is a free log subscription operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
//
// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
func (_ERC *ERCFilterer) WatchApproval(opts *bind.WatchOpts, sink chan<- *ERCApproval, owner []common.Address, spender []common.Address) (event.Subscription, error) {
var ownerRule []interface{}
for _, ownerItem := range owner {
ownerRule = append(ownerRule, ownerItem)
}
var spenderRule []interface{}
for _, spenderItem := range spender {
spenderRule = append(spenderRule, spenderItem)
}
logs, sub, err := _ERC.contract.WatchLogs(opts, "Approval", ownerRule, spenderRule)
if err != nil {
return nil, err
}
return event.NewSubscription(func(quit <-chan struct{}) error {
defer sub.Unsubscribe()
for {
select {
case log := <-logs:
// New log arrived, parse the event and forward to the user
event := new(ERCApproval)
if err := _ERC.contract.UnpackLog(event, "Approval", log); err != nil {
return err
}
event.Raw = log
select {
case sink <- event:
case err := <-sub.Err():
return err
case <-quit:
return nil
}
case err := <-sub.Err():
return err
case <-quit:
return nil
}
}
}), nil
}
// ParseApproval is a log parse operation binding the contract event 0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925.
//
// Solidity: event Approval(address indexed owner, address indexed spender, uint256 value)
func (_ERC *ERCFilterer) ParseApproval(log types.Log) (*ERCApproval, error) {
event := new(ERCApproval)
if err := _ERC.contract.UnpackLog(event, "Approval", log); err != nil {
return nil, err
}
return event, nil
}
// ERCTransferIterator is returned from FilterTransfer and is used to iterate over the raw logs and unpacked data for Transfer events raised by the ERC contract.
type ERCTransferIterator struct {
Event *ERCTransfer // Event containing the contract specifics and raw log
contract *bind.BoundContract // Generic contract to use for unpacking event data
event string // Event name to use for unpacking event data
logs chan types.Log // Log channel receiving the found contract events
sub ethereum.Subscription // Subscription for errors, completion and termination
done bool // Whether the subscription completed delivering logs
fail error // Occurred error to stop iteration
}
// Next advances the iterator to the subsequent event, returning whether there
// are any more events found. In case of a retrieval or parsing error, false is
// returned and Error() can be queried for the exact failure.
func (it *ERCTransferIterator) Next() bool {
// If the iterator failed, stop iterating
if it.fail != nil {
return false
}
// If the iterator completed, deliver directly whatever's available
if it.done {
select {
case log := <-it.logs:
it.Event = new(ERCTransfer)
if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
it.fail = err
return false
}
it.Event.Raw = log
return true
default:
return false
}
}
// Iterator still in progress, wait for either a data or an error event
select {
case log := <-it.logs:
it.Event = new(ERCTransfer)
if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
it.fail = err
return false
}
it.Event.Raw = log
return true
case err := <-it.sub.Err():
it.done = true
it.fail = err
return it.Next()
}
}
// Error returns any retrieval or parsing error occurred during filtering.
func (it *ERCTransferIterator) Error() error {
return it.fail
}
// Close terminates the iteration process, releasing any pending underlying
// resources.
func (it *ERCTransferIterator) Close() error {
it.sub.Unsubscribe()
return nil
}
// ERCTransfer represents a Transfer event raised by the ERC contract.
type ERCTransfer struct {
From common.Address
To common.Address
Value *big.Int
Data []byte
Raw types.Log // Blockchain specific contextual infos
}
// FilterTransfer is a free log retrieval operation binding the contract event 0xe19260aff97b920c7df27010903aeb9c8d2be5d310a2c67824cf3f15396e4c16.
//
// Solidity: event Transfer(address indexed from, address indexed to, uint256 value, bytes data)
func (_ERC *ERCFilterer) FilterTransfer(opts *bind.FilterOpts, from []common.Address, to []common.Address) (*ERCTransferIterator, error) {
var fromRule []interface{}
for _, fromItem := range from {
fromRule = append(fromRule, fromItem)
}
var toRule []interface{}
for _, toItem := range to {
toRule = append(toRule, toItem)
}
logs, sub, err := _ERC.contract.FilterLogs(opts, "Transfer", fromRule, toRule)
if err != nil {
return nil, err
}
return &ERCTransferIterator{contract: _ERC.contract, event: "Transfer", logs: logs, sub: sub}, nil
}
// WatchTransfer is a free log subscription operation binding the contract event 0xe19260aff97b920c7df27010903aeb9c8d2be5d310a2c67824cf3f15396e4c16.
//
// Solidity: event Transfer(address indexed from, address indexed to, uint256 value, bytes data)
func (_ERC *ERCFilterer) WatchTransfer(opts *bind.WatchOpts, sink chan<- *ERCTransfer, from []common.Address, to []common.Address) (event.Subscription, error) {
var fromRule []interface{}
for _, fromItem := range from {
fromRule = append(fromRule, fromItem)
}
var toRule []interface{}
for _, toItem := range to {
toRule = append(toRule, toItem)
}
logs, sub, err := _ERC.contract.WatchLogs(opts, "Transfer", fromRule, toRule)
if err != nil {
return nil, err
}
return event.NewSubscription(func(quit <-chan struct{}) error {
defer sub.Unsubscribe()
for {
select {
case log := <-logs:
// New log arrived, parse the event and forward to the user
event := new(ERCTransfer)
if err := _ERC.contract.UnpackLog(event, "Transfer", log); err != nil {
return err
}
event.Raw = log
select {
case sink <- event:
case err := <-sub.Err():
return err
case <-quit:
return nil
}
case err := <-sub.Err():
return err
case <-quit:
return nil
}
}
}), nil
}
// ParseTransfer is a log parse operation binding the contract event 0xe19260aff97b920c7df27010903aeb9c8d2be5d310a2c67824cf3f15396e4c16.
//
// Solidity: event Transfer(address indexed from, address indexed to, uint256 value, bytes data)
func (_ERC *ERCFilterer) ParseTransfer(log types.Log) (*ERCTransfer, error) {
event := new(ERCTransfer)
if err := _ERC.contract.UnpackLog(event, "Transfer", log); err != nil {
return nil, err
}
return event, nil
}

1034
abi/oracle.go Normal file

File diff suppressed because it is too large Load Diff

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@ -0,0 +1,100 @@
package main
import (
"chainlink_exporter/abi"
"encoding/hex"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"go.uber.org/zap"
"sync"
"time"
)
type (
AggregatorMonitor struct {
aggregator *abi.Aggregator
address common.Address
pendingJobs map[string]*abi.OracleOracleRequest
monitor *Monitor
lock sync.Mutex
}
)
func NewAggregatorMonitor(agg *abi.Aggregator, addr common.Address, m *Monitor) *AggregatorMonitor {
return &AggregatorMonitor{
aggregator: agg,
pendingJobs: map[string]*abi.OracleOracleRequest{},
monitor: m,
address: addr,
}
}
func (a *AggregatorMonitor) Monitor() {
for {
zap.L().Debug("Starting aggregator routine", zap.String("address", a.address.String()))
func() {
resChan := make(chan *abi.AggregatorChainlinkFulfilled)
sub, err := a.aggregator.WatchChainlinkFulfilled(&bind.WatchOpts{}, resChan, nil)
if err != nil {
zap.L().Error("failed to watch aggregator fulfillment", zap.Error(err), zap.String("address", a.address.String()))
return
}
defer sub.Unsubscribe()
for {
select {
case err = <-sub.Err():
zap.L().Error("aggregator fulfillment subscription errored", zap.Error(err), zap.String("address", a.address.String()))
return
case res, has := <-resChan:
if !has {
}
a.handleFulfillment(res)
}
}
}()
zap.L().Warn("aggregator routine died. restarting in 5sec", zap.String("address", a.address.String()))
time.Sleep(5 * time.Second)
}
}
func (a *AggregatorMonitor) HandleNewBlock(height uint64) {
a.lock.Lock()
defer a.lock.Unlock()
for reqID, n := range a.pendingJobs {
delta := int(height) - int(n.Raw.BlockNumber)
// todo make dynamic
if delta > 15 {
zap.L().Info("job fulfillment slot missed", zap.Uint64("height", n.Raw.BlockNumber),
zap.String("requester", n.Requester.String()), zap.Binary("request_id", n.RequestId[:]),
zap.ByteString("spec_id", n.SpecId[:]))
delete(a.pendingJobs, reqID)
a.monitor.HandleMiss(n)
}
}
}
func (a *AggregatorMonitor) handleRequest(res *abi.OracleOracleRequest) {
a.lock.Lock()
defer a.lock.Unlock()
a.pendingJobs[hex.EncodeToString(res.RequestId[:])] = res
}
func (a *AggregatorMonitor) handleFulfillment(res *abi.AggregatorChainlinkFulfilled) {
a.lock.Lock()
defer a.lock.Unlock()
if job, ok := a.pendingJobs[hex.EncodeToString(res.Id[:])]; ok {
zap.L().Info("job fulfilled", zap.Uint64("height", res.Raw.BlockNumber),
zap.String("requester", job.Requester.String()), zap.Binary("request_id", job.RequestId[:]),
zap.ByteString("spec_id", job.SpecId[:]), zap.Uint64("request_height", job.Raw.BlockNumber))
delete(a.pendingJobs, hex.EncodeToString(res.Id[:]))
a.monitor.HandleFulfillment(res, job)
}
}

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@ -0,0 +1,60 @@
package main
import (
"context"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/prometheus/client_golang/prometheus/promhttp"
"go.uber.org/zap"
"net/http"
"os"
"time"
)
var (
oracleAddr = os.Getenv("ADDRESS")
fulfillmentAddr = os.Getenv("NODE_ADDRESS")
linkAddr = os.Getenv("LINK_ADDRESS")
rpcHost = os.Getenv("RPC")
lAddr = os.Getenv("LADDR")
)
func main() {
l, _ := zap.NewProduction()
zap.ReplaceGlobals(l)
if lAddr == "" {
panic("LADDR must be set")
}
if rpcHost == "" {
panic("RPC must be set")
}
if fulfillmentAddr == "" {
panic("NODE_ADDRESS must be set")
}
if oracleAddr == "" {
panic("ADDRESS must be set")
}
if linkAddr == "" {
zap.L().Warn("LINK_ADDRESS isn't set. Falling back to mainnet default.")
linkAddr = "0x514910771af9ca656af840dff83e8264ecf986ca"
}
ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
defer cancel()
c, err := ethclient.DialContext(ctx, rpcHost)
if err != nil {
panic(err)
}
mon, err := NewMonitor(common.HexToAddress(oracleAddr), common.HexToAddress(fulfillmentAddr), common.HexToAddress(linkAddr), c)
if err != nil {
panic(err)
}
mon.Start()
http.Handle("/metrics", promhttp.Handler())
panic(http.ListenAndServe(lAddr, nil))
}

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@ -0,0 +1,322 @@
package main
import (
"chainlink_exporter/abi"
"context"
"fmt"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/params"
"github.com/prometheus/client_golang/prometheus"
"go.uber.org/atomic"
"go.uber.org/zap"
"math/big"
"sync"
"time"
)
const (
PRECISION = 1000000000
)
type (
Monitor struct {
client *ethclient.Client
aggregators map[common.Address]*AggregatorMonitor
addr common.Address
fulfillmentAddr common.Address
oracle *abi.Oracle
linkContract *abi.ERC
lock sync.Mutex
lastResTime *atomic.Uint64
lastReqTime *atomic.Uint64
lastResGauge prometheus.Gauge
lastReqGauge prometheus.Gauge
currentHeightGauge prometheus.Gauge
balanceGauge prometheus.Gauge
linkBalanceGauge *prometheus.GaugeVec
responseTimeHistogram *prometheus.HistogramVec
revenueCounter *prometheus.CounterVec
fulfillmentCounter *prometheus.CounterVec
missCounter *prometheus.CounterVec
}
)
func NewMonitor(addr common.Address, fulfillmentAddr common.Address, linkAddr common.Address, client *ethclient.Client) (*Monitor, error) {
m := &Monitor{
addr: addr,
fulfillmentAddr: fulfillmentAddr,
client: client,
aggregators: map[common.Address]*AggregatorMonitor{},
lock: sync.Mutex{},
lastResTime: atomic.NewUint64(0),
lastReqTime: atomic.NewUint64(0),
lastResGauge: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "last_response",
Help: "Height of the last response",
}),
lastReqGauge: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "last_request",
Help: "Height of the last oracle request",
}),
currentHeightGauge: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "height",
Help: "Last synced height",
}),
responseTimeHistogram: prometheus.NewHistogramVec(prometheus.HistogramOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "response_time",
Help: "Average response time in blocks",
Buckets: []float64{1, 2, 3, 4, 5, 10, 15},
}, []string{"spec_id"}),
fulfillmentCounter: prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "fulfilled",
Help: "Number of successfully fulfilled requests",
}, []string{"spec_id", "requester"}),
missCounter: prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "missed",
Help: "Number of missed requests",
}, []string{"spec_id", "requester"}),
revenueCounter: prometheus.NewCounterVec(prometheus.CounterOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "revenue",
Help: "Number of LINK tokens earned",
}, []string{"spec_id", "requester", "status"}),
balanceGauge: prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "eth_balance",
Help: "Balance of the oracle account",
}),
linkBalanceGauge: prometheus.NewGaugeVec(prometheus.GaugeOpts{
Namespace: "cl",
Subsystem: "mon",
Name: "link_balance",
Help: "Link balance of the oracle",
}, []string{"type"}),
}
prometheus.MustRegister(m.lastResGauge)
prometheus.MustRegister(m.lastReqGauge)
prometheus.MustRegister(m.currentHeightGauge)
prometheus.MustRegister(m.responseTimeHistogram)
prometheus.MustRegister(m.fulfillmentCounter)
prometheus.MustRegister(m.revenueCounter)
prometheus.MustRegister(m.missCounter)
prometheus.MustRegister(m.balanceGauge)
prometheus.MustRegister(m.linkBalanceGauge)
oracle, err := abi.NewOracle(addr, m.client)
if err != nil {
return nil, err
}
m.oracle = oracle
linkContract, err := abi.NewERC(linkAddr, m.client)
if err != nil {
return nil, err
}
m.linkContract = linkContract
_, err = oracle.Owner(nil)
if err != nil {
return nil, fmt.Errorf("address does not belong to an oracle")
}
return m, nil
}
func (m *Monitor) Start() {
go m.pollRoutine()
go m.metricRoutine()
}
func (m *Monitor) metricRoutine() {
zap.L().Info("Starting metric routine")
ticker := time.NewTicker(time.Second)
defer ticker.Stop()
for {
select {
case <-ticker.C:
m.lastResGauge.Set(float64(m.lastResTime.Load()))
m.lastReqGauge.Set(float64(m.lastReqTime.Load()))
}
}
}
func (m *Monitor) updateBalances() {
zap.L().Debug("fetching balances")
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
balance, err := m.client.BalanceAt(ctx, m.fulfillmentAddr, nil)
if err != nil {
zap.L().Error("failed to fetch oracle balance", zap.Error(err))
return
}
balance.Div(balance, big.NewInt(params.Ether/PRECISION))
m.balanceGauge.Set(float64(balance.Uint64()) / PRECISION)
ctx, cancel = context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
owner, err := m.oracle.Owner(&bind.CallOpts{
Context: ctx,
})
withdrawableLinkBalance, err := m.oracle.Withdrawable(&bind.CallOpts{
From: owner,
Context: ctx,
})
if err != nil {
zap.L().Error("failed to fetch withdrawable LINK balance", zap.Error(err))
return
}
withdrawableLinkBalance.Div(withdrawableLinkBalance, big.NewInt(params.Ether/PRECISION))
m.linkBalanceGauge.WithLabelValues("withdrawable").Set(float64(withdrawableLinkBalance.Uint64()) / PRECISION)
ctx, cancel = context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
linkBalance, err := m.linkContract.BalanceOf(&bind.CallOpts{Context: ctx}, m.addr)
if err != nil {
zap.L().Error("failed to fetch LINK balance", zap.Error(err))
return
}
linkBalance.Div(linkBalance, big.NewInt(params.Ether/PRECISION))
m.linkBalanceGauge.WithLabelValues("balance").Set(float64(linkBalance.Uint64()) / PRECISION)
zap.L().Debug("fetched balances")
}
func (m *Monitor) pollRoutine() {
for {
zap.L().Info("Starting poll routine")
func() {
reqChan := make(chan *abi.OracleOracleRequest)
sub, err := m.oracle.WatchOracleRequest(nil, reqChan, nil)
if err != nil {
zap.L().Error("failed to watch oracle requests", zap.Error(err))
return
}
defer sub.Unsubscribe()
headChan := make(chan *types.Header)
sub2, err := m.client.SubscribeNewHead(context.Background(), headChan)
if err != nil {
zap.L().Error("failed to subscribe to new heads", zap.Error(err))
return
}
defer sub2.Unsubscribe()
for {
select {
case err = <-sub.Err():
zap.L().Error("oracle requests subscription errored", zap.Error(err))
return
case err = <-sub2.Err():
zap.L().Error("head subscription errored", zap.Error(err))
return
case req, has := <-reqChan:
if !has {
}
err := m.handleRequest(req)
if err != nil {
zap.L().Warn("failed to handle request", zap.Error(err))
continue
}
case header, has := <-headChan:
if !has {
}
// Update balances
go m.updateBalances()
// Update metrics and update aggregator monitors
m.currentHeightGauge.Set(float64(header.Number.Uint64()))
for _, monitor := range m.aggregators {
monitor.HandleNewBlock(header.Number.Uint64())
}
}
}
}()
zap.L().Warn("poll routine died. restarting in 5sec")
time.Sleep(5 * time.Second)
}
}
func (m *Monitor) handleRequest(req *abi.OracleOracleRequest) error {
logger := zap.L().With(zap.Uint64("height", req.Raw.BlockNumber),
zap.String("requester", req.Requester.String()), zap.Binary("request_id", req.RequestId[:]),
zap.ByteString("spec_id", req.SpecId[:]))
logger.Info("received request")
if old := m.lastReqTime.Load(); old < req.Raw.BlockNumber {
m.lastReqTime.CAS(old, req.Raw.BlockNumber)
}
if agg, contains := m.aggregators[req.Requester]; contains {
agg.handleRequest(req)
return nil
}
logger.Debug("requester unknown; creating a new aggregator monitor")
m.lock.Lock()
defer m.lock.Unlock()
agg, err := abi.NewAggregator(req.Requester, m.client)
if err != nil {
return err
}
_, err = agg.Owner(nil)
if err != nil {
logger.Warn("requester is not an aggregator")
return nil
}
am := NewAggregatorMonitor(agg, req.Requester, m)
am.handleRequest(req)
go am.Monitor()
m.aggregators[req.Requester] = am
return nil
}
func (m *Monitor) HandleFulfillment(res *abi.AggregatorChainlinkFulfilled, req *abi.OracleOracleRequest) {
if old := m.lastResTime.Load(); old < res.Raw.BlockNumber {
m.lastResTime.CAS(old, res.Raw.BlockNumber)
}
deltaBlocks := res.Raw.BlockNumber - req.Raw.BlockNumber
m.responseTimeHistogram.WithLabelValues(string(req.SpecId[:])).Observe(float64(deltaBlocks))
m.fulfillmentCounter.WithLabelValues(string(req.SpecId[:]), req.Requester.String()).Inc()
m.revenueCounter.WithLabelValues(string(req.SpecId[:]), req.Requester.String(), "fulfilled").Add(float64(req.Payment.Uint64()) / params.Ether)
}
func (m *Monitor) HandleMiss(req *abi.OracleOracleRequest) {
m.missCounter.WithLabelValues(string(req.SpecId[:]), req.Requester.String()).Inc()
m.revenueCounter.WithLabelValues(string(req.SpecId[:]), req.Requester.String(), "missed").Add(float64(req.Payment.Uint64()) / params.Ether)
}

1
contracts/Aggregator.abi Normal file

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1
contracts/LinkToken.abi Normal file
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[{"constant":true,"inputs":[],"name":"name","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_value","type":"uint256"}],"name":"approve","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_from","type":"address"},{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transferFrom","outputs":[{"name":"","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"decimals","outputs":[{"name":"","type":"uint8"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"},{"name":"_data","type":"bytes"}],"name":"transferAndCall","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"}],"name":"balanceOf","outputs":[{"name":"balance","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"symbol","outputs":[{"name":"","type":"string"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"name":"_to","type":"address"},{"name":"_value","type":"uint256"}],"name":"transfer","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"name":"_spender","type":"address"},{"name":"_addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"name":"success","type":"bool"}],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"name":"_owner","type":"address"},{"name":"_spender","type":"address"}],"name":"allowance","outputs":[{"name":"remaining","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"name":"from","type":"address"},{"indexed":true,"name":"to","type":"address"},{"indexed":false,"name":"value","type":"uint256"},{"indexed":false,"name":"data","type":"bytes"}],"name":"Transfer","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"name":"owner","type":"address"},{"indexed":true,"name":"spender","type":"address"},{"indexed":false,"name":"value","type":"uint256"}],"name":"Approval","type":"event"}]

355
contracts/Oracle.abi Normal file
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@ -0,0 +1,355 @@
[
{
"constant": false,
"inputs": [
{
"name": "_sender",
"type": "address"
},
{
"name": "_payment",
"type": "uint256"
},
{
"name": "_specId",
"type": "bytes32"
},
{
"name": "_callbackAddress",
"type": "address"
},
{
"name": "_callbackFunctionId",
"type": "bytes4"
},
{
"name": "_nonce",
"type": "uint256"
},
{
"name": "_dataVersion",
"type": "uint256"
},
{
"name": "_data",
"type": "bytes"
}
],
"name": "oracleRequest",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_requestId",
"type": "bytes32"
},
{
"name": "_payment",
"type": "uint256"
},
{
"name": "_callbackAddress",
"type": "address"
},
{
"name": "_callbackFunctionId",
"type": "bytes4"
},
{
"name": "_expiration",
"type": "uint256"
},
{
"name": "_data",
"type": "bytes32"
}
],
"name": "fulfillOracleRequest",
"outputs": [
{
"name": "",
"type": "bool"
}
],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "EXPIRY_TIME",
"outputs": [
{
"name": "",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "withdrawable",
"outputs": [
{
"name": "",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_requestId",
"type": "bytes32"
},
{
"name": "_payment",
"type": "uint256"
},
{
"name": "_callbackFunc",
"type": "bytes4"
},
{
"name": "_expiration",
"type": "uint256"
}
],
"name": "cancelOracleRequest",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [],
"name": "renounceOwnership",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_node",
"type": "address"
},
{
"name": "_allowed",
"type": "bool"
}
],
"name": "setFulfillmentPermission",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "owner",
"outputs": [
{
"name": "",
"type": "address"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_sender",
"type": "address"
},
{
"name": "_amount",
"type": "uint256"
},
{
"name": "_data",
"type": "bytes"
}
],
"name": "onTokenTransfer",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "_node",
"type": "address"
}
],
"name": "getAuthorizationStatus",
"outputs": [
{
"name": "",
"type": "bool"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_newOwner",
"type": "address"
}
],
"name": "transferOwnership",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_recipient",
"type": "address"
},
{
"name": "_amount",
"type": "uint256"
}
],
"name": "withdraw",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"name": "_link",
"type": "address"
}
],
"payable": false,
"stateMutability": "nonpayable",
"type": "constructor"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "specId",
"type": "bytes32"
},
{
"indexed": false,
"name": "requester",
"type": "address"
},
{
"indexed": false,
"name": "requestId",
"type": "bytes32"
},
{
"indexed": false,
"name": "payment",
"type": "uint256"
},
{
"indexed": false,
"name": "callbackAddr",
"type": "address"
},
{
"indexed": false,
"name": "callbackFunctionId",
"type": "bytes4"
},
{
"indexed": false,
"name": "cancelExpiration",
"type": "uint256"
},
{
"indexed": false,
"name": "dataVersion",
"type": "uint256"
},
{
"indexed": false,
"name": "data",
"type": "bytes"
}
],
"name": "OracleRequest",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "requestId",
"type": "bytes32"
}
],
"name": "CancelOracleRequest",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "previousOwner",
"type": "address"
}
],
"name": "OwnershipRenounced",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "previousOwner",
"type": "address"
},
{
"indexed": true,
"name": "newOwner",
"type": "address"
}
],
"name": "OwnershipTransferred",
"type": "event"
}
]

10
go.mod Normal file
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@ -0,0 +1,10 @@
module chainlink_exporter
go 1.13
require (
github.com/ethereum/go-ethereum v1.9.10
github.com/prometheus/client_golang v1.3.0
go.uber.org/atomic v1.5.1
go.uber.org/zap v1.13.0
)

282
go.sum Normal file
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@ -0,0 +1,282 @@
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