@backt/protocol
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Backt smart contracts implementation
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{
"contractName": "Feeds",
"abi": [
{
"constant": true,
"inputs": [],
"name": "daemonAccount",
"outputs": [
{
"name": "",
"type": "address"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "decimals",
"outputs": [
{
"name": "",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "",
"type": "bytes32"
}
],
"name": "marketNames",
"outputs": [
{
"name": "",
"type": "string"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [],
"name": "renounceOwnership",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "",
"type": "bytes32"
}
],
"name": "markets",
"outputs": [
{
"name": "",
"type": "bool"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "owner",
"outputs": [
{
"name": "",
"type": "address"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_newOwner",
"type": "address"
}
],
"name": "transferOwnership",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"payable": false,
"stateMutability": "nonpayable",
"type": "fallback"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "bytesId",
"type": "bytes32"
},
{
"indexed": false,
"name": "strId",
"type": "string"
}
],
"name": "LogFeedsMarketAdded",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "marketId",
"type": "bytes32"
}
],
"name": "LogFeedsMarketRemoved",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "marketId",
"type": "bytes32"
},
{
"indexed": true,
"name": "timestamp",
"type": "uint256"
},
{
"indexed": false,
"name": "value",
"type": "uint256"
}
],
"name": "LogFeedsPush",
"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"
},
{
"constant": true,
"inputs": [
{
"name": "_marketId",
"type": "bytes32"
}
],
"name": "isMarketActive",
"outputs": [
{
"name": "",
"type": "bool"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "isDaemon",
"outputs": [
{
"name": "",
"type": "bool"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_daemon",
"type": "address"
}
],
"name": "setDaemonAccount",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_marketId",
"type": "bytes32"
},
{
"name": "_value",
"type": "uint256"
},
{
"name": "_timestamp",
"type": "uint256"
}
],
"name": "push",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "_marketId",
"type": "bytes32"
}
],
"name": "read",
"outputs": [
{
"name": "value",
"type": "uint256"
},
{
"name": "timestamp",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_marketStrId",
"type": "string"
}
],
"name": "addMarket",
"outputs": [
{
"name": "marketId",
"type": "bytes32"
}
],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "_marketId",
"type": "bytes32"
}
],
"name": "removeMarket",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
}
],
"bytecode": 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"source": "pragma solidity ^0.4.23;\npragma experimental \"v0.5.0\";\n\nimport \"openzeppelin-solidity/contracts/ownership/Ownable.sol\";\nimport \"./DBC.sol\";\n\n\ncontract Feeds is DBC, Ownable {\n\n event LogFeedsMarketAdded(bytes32 indexed bytesId, string strId);\n event LogFeedsMarketRemoved(bytes32 indexed marketId);\n event LogFeedsPush(bytes32 indexed marketId, uint indexed timestamp, uint value);\n\n string constant REASON_MUST_BE_FROM_DAEMON = \"Caller must be the registered Daemon\";\n string constant REASON_MUST_BE_ACTIVE_MARKET = \"Market must be active to push a value\";\n string constant REASON_FALLBACK = \"Can't call fallback function\";\n\n /**\n * As solidity doesn't support storing floats we'll store values as integers\n * adjusted by a predetermined number of decimals.\n *\n * For example if decimals is 18 then:\n * 1.23456789 is stored as 1234567890000000000.\n *\n * For now we have one fixed for all markets. Later we'll likely need to\n * support a different number for some markets.\n */\n uint public decimals = 30;\n\n\n /**\n * Active markets - market active if markets[market_id] is true\n */\n mapping(bytes32 => bool) public markets;\n\n function isMarketActive(bytes32 _marketId) public view returns (bool) {\n return markets[_marketId];\n }\n\n /**\n * Mapping from the market id to the string form. eg. \"Poloniex_BTC_ETH\"\n */\n mapping(bytes32 => string) public marketNames;\n\n\n /**\n * Daemon - account that pushes new price feed values\n */\n address public daemonAccount;\n\n function isDaemon() public view returns (bool) {\n return msg.sender == daemonAccount;\n }\n\n function setDaemonAccount(address _daemon) public onlyOwner {\n daemonAccount = _daemon;\n }\n\n\n /**\n * Feed data - by market\n */\n struct DataPoint {\n uint value; // original value * (10**decimals)\n uint timestamp; // UNIX milliseconds\n }\n mapping(bytes32 => DataPoint) latestData;\n\n\n /**\n * Push value and timestamp of read into the contract.\n * @param _value Read value * (10^decimals). See decimal description above.\n * @param _timestamp UNIX milliseconds timestamp of the read\n */\n function push(\n bytes32 _marketId,\n uint _value,\n uint _timestamp\n )\n external\n pre_cond(isDaemon(), REASON_MUST_BE_FROM_DAEMON)\n pre_cond(isMarketActive(_marketId), REASON_MUST_BE_ACTIVE_MARKET)\n {\n latestData[_marketId] = DataPoint(_value, _timestamp);\n emit LogFeedsPush(_marketId, _timestamp, _value);\n }\n\n /**\n * Read the latest value and timestamp from the contract.\n */\n function read(bytes32 _marketId)\n external\n view\n pre_cond(isMarketActive(_marketId), REASON_MUST_BE_ACTIVE_MARKET)\n returns (uint value, uint timestamp)\n {\n return readInternal(_marketId);\n }\n\n function readInternal(bytes32 _marketId)\n internal\n view\n returns (uint value, uint timestamp)\n {\n value = latestData[_marketId].value;\n timestamp = latestData[_marketId].timestamp;\n }\n\n\n /**\n * Add a new market\n * @param _marketStrId String id of market something like \"Poloniex_BTC_ETH\"\n * @return marketId bytes32 keccak256 of the _marketStrId\n */\n function addMarket(string _marketStrId)\n external\n onlyOwner\n returns (bytes32 marketId)\n {\n marketId = keccak256(abi.encodePacked(_marketStrId));\n markets[marketId] = true;\n marketNames[marketId] = _marketStrId;\n emit LogFeedsMarketAdded(marketId, _marketStrId);\n }\n\n /**\n * Removes a market.\n */\n function removeMarket(bytes32 _marketId)\n external\n onlyOwner\n pre_cond(isMarketActive(_marketId), REASON_MUST_BE_ACTIVE_MARKET)\n {\n markets[_marketId] = false;\n latestData[_marketId] = DataPoint(0, 0);\n emit LogFeedsMarketRemoved(_marketId);\n // TODO: provide a withdraw and mark balances\n }\n\n // Disable the fallback\n function () external {\n revert(REASON_FALLBACK);\n }\n\n}\n",
"sourcePath": "/home/julien/0xFutures/protocol/contracts/Feeds.sol",
"compiler": {
"name": "solc",
"version": "0.4.24+commit.e67f0147.Emscripten.clang"
},
"networks": {},
"schemaVersion": "2.0.1",
"updatedAt": "2018-11-27T22:04:40.329Z"
}