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ocean-subgraph/abis/FixedRateExchange.json
Alex Coseru 7784de4a97
add FixedRateExchange (#53) 
* add FixedRateExchange

* fix lint

* remove duplicate code.

* fix style

* remove newline.

Co-authored-by: ssallam <36411297+ssallam@users.noreply.github.com>
2021-03-10 23:36:51 +02:00

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{
"contractName": "FixedRateExchange",
"abi": [
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "exchangeId",
"type": "bytes32"
},
{
"indexed": true,
"name": "baseToken",
"type": "address"
},
{
"indexed": true,
"name": "dataToken",
"type": "address"
},
{
"indexed": false,
"name": "exchangeOwner",
"type": "address"
},
{
"indexed": false,
"name": "fixedRate",
"type": "uint256"
}
],
"name": "ExchangeCreated",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "exchangeId",
"type": "bytes32"
},
{
"indexed": true,
"name": "exchangeOwner",
"type": "address"
},
{
"indexed": false,
"name": "newRate",
"type": "uint256"
}
],
"name": "ExchangeRateChanged",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "exchangeId",
"type": "bytes32"
},
{
"indexed": true,
"name": "exchangeOwner",
"type": "address"
}
],
"name": "ExchangeActivated",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "exchangeId",
"type": "bytes32"
},
{
"indexed": true,
"name": "exchangeOwner",
"type": "address"
}
],
"name": "ExchangeDeactivated",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"name": "exchangeId",
"type": "bytes32"
},
{
"indexed": true,
"name": "by",
"type": "address"
},
{
"indexed": false,
"name": "baseTokenSwappedAmount",
"type": "uint256"
},
{
"indexed": false,
"name": "dataTokenSwappedAmount",
"type": "uint256"
}
],
"name": "Swapped",
"type": "event"
},
{
"constant": false,
"inputs": [
{
"name": "baseToken",
"type": "address"
},
{
"name": "dataToken",
"type": "address"
},
{
"name": "fixedRate",
"type": "uint256"
}
],
"name": "create",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "baseToken",
"type": "address"
},
{
"name": "dataToken",
"type": "address"
},
{
"name": "exchangeOwner",
"type": "address"
}
],
"name": "generateExchangeId",
"outputs": [
{
"name": "",
"type": "bytes32"
}
],
"payable": false,
"stateMutability": "pure",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
},
{
"name": "dataTokenAmount",
"type": "uint256"
}
],
"name": "CalcInGivenOut",
"outputs": [
{
"name": "baseTokenAmount",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
},
{
"name": "dataTokenAmount",
"type": "uint256"
}
],
"name": "swap",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "getNumberOfExchanges",
"outputs": [
{
"name": "",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
},
{
"name": "newRate",
"type": "uint256"
}
],
"name": "setRate",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": false,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
}
],
"name": "toggleExchangeState",
"outputs": [],
"payable": false,
"stateMutability": "nonpayable",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
}
],
"name": "getRate",
"outputs": [
{
"name": "",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
}
],
"name": "getSupply",
"outputs": [
{
"name": "supply",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
}
],
"name": "getExchange",
"outputs": [
{
"name": "exchangeOwner",
"type": "address"
},
{
"name": "dataToken",
"type": "address"
},
{
"name": "baseToken",
"type": "address"
},
{
"name": "fixedRate",
"type": "uint256"
},
{
"name": "active",
"type": "bool"
},
{
"name": "supply",
"type": "uint256"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "getExchanges",
"outputs": [
{
"name": "",
"type": "bytes32[]"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [
{
"name": "exchangeId",
"type": "bytes32"
}
],
"name": "isActive",
"outputs": [
{
"name": "",
"type": "bool"
}
],
"payable": false,
"stateMutability": "view",
"type": "function"
}
],
"metadata": "{\"compiler\":{\"version\":\"0.5.7+commit.6da8b019\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"constant\":true,\"inputs\":[],\"name\":\"getExchanges\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32[]\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"}],\"name\":\"toggleExchangeState\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"}],\"name\":\"getExchange\",\"outputs\":[{\"name\":\"exchangeOwner\",\"type\":\"address\"},{\"name\":\"dataToken\",\"type\":\"address\"},{\"name\":\"baseToken\",\"type\":\"address\"},{\"name\":\"fixedRate\",\"type\":\"uint256\"},{\"name\":\"active\",\"type\":\"bool\"},{\"name\":\"supply\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"}],\"name\":\"getSupply\",\"outputs\":[{\"name\":\"supply\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"}],\"name\":\"isActive\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"name\":\"newRate\",\"type\":\"uint256\"}],\"name\":\"setRate\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"}],\"name\":\"getRate\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"getNumberOfExchanges\",\"outputs\":[{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"name\":\"dataTokenAmount\",\"type\":\"uint256\"}],\"name\":\"CalcInGivenOut\",\"outputs\":[{\"name\":\"baseTokenAmount\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[{\"name\":\"baseToken\",\"type\":\"address\"},{\"name\":\"dataToken\",\"type\":\"address\"},{\"name\":\"exchangeOwner\",\"type\":\"address\"}],\"name\":\"generateExchangeId\",\"outputs\":[{\"name\":\"\",\"type\":\"bytes32\"}],\"payable\":false,\"stateMutability\":\"pure\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"name\":\"dataTokenAmount\",\"type\":\"uint256\"}],\"name\":\"swap\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"baseToken\",\"type\":\"address\"},{\"name\":\"dataToken\",\"type\":\"address\"},{\"name\":\"fixedRate\",\"type\":\"uint256\"}],\"name\":\"create\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"baseToken\",\"type\":\"address\"},{\"indexed\":true,\"name\":\"dataToken\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"exchangeOwner\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"fixedRate\",\"type\":\"uint256\"}],\"name\":\"ExchangeCreated\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"exchangeOwner\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"newRate\",\"type\":\"uint256\"}],\"name\":\"ExchangeRateChanged\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"exchangeOwner\",\"type\":\"address\"}],\"name\":\"ExchangeActivated\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"exchangeOwner\",\"type\":\"address\"}],\"name\":\"ExchangeDeactivated\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"exchangeId\",\"type\":\"bytes32\"},{\"indexed\":true,\"name\":\"by\",\"type\":\"address\"},{\"indexed\":false,\"name\":\"baseTokenSwappedAmount\",\"type\":\"uint256\"},{\"indexed\":false,\"name\":\"dataTokenSwappedAmount\",\"type\":\"uint256\"}],\"name\":\"Swapped\",\"type\":\"event\"}],\"devdoc\":{\"details\":\"FixedRateExchange is a fixed rate exchange Contract Marketplaces uses this contract to allow consumers exchanging datatokens with ocean token using a fixed exchange rate.\",\"methods\":{\"CalcInGivenOut(bytes32,uint256)\":{\"details\":\"CalcInGivenOut Calculates how many basetokens are needed to get specifyed amount of datatokens\",\"params\":{\"dataTokenAmount\":\"the amount of data tokens to be exchanged\",\"exchangeId\":\"a unique exchange idnetifier \"}},\"create(address,address,uint256)\":{\"details\":\"create creates new exchange pairs between base token (ocean token) and data tokens.\",\"params\":{\"baseToken\":\"refers to a ocean token contract address\",\"dataToken\":\"refers to a data token contract address\",\"fixedRate\":\"refers to the exact fixed exchange rate in wei\"}},\"generateExchangeId(address,address,address)\":{\"details\":\"generateExchangeId creates unique exchange identifier for two token pairs.\",\"params\":{\"baseToken\":\"refers to a ocean token contract address\",\"dataToken\":\"refers to a data token contract address\",\"exchangeOwner\":\"exchange owner address\"}},\"getExchange(bytes32)\":{\"details\":\"getExchange gets all the exchange details\",\"params\":{\"exchangeId\":\"a unique exchange idnetifier\"},\"return\":\"all the exchange details including the exchange Owner the dataToken contract address, the base token address, the fixed rate, whether the exchange is active and the supply or the the current data token liquidity.\"},\"getExchanges()\":{\"details\":\"getExchanges gets all the exchanges list\",\"return\":\"a list of all registered exchange Ids\"},\"getNumberOfExchanges()\":{\"details\":\"getNumberOfExchanges gets the total number of registered exchanges\",\"return\":\"total number of registered exchange IDs\"},\"getRate(bytes32)\":{\"details\":\"getRate gets the current fixed rate for an exchange\",\"params\":{\"exchangeId\":\"a unique exchange idnetifier\"},\"return\":\"fixed rate value\"},\"getSupply(bytes32)\":{\"details\":\"getSupply gets the current supply of datatokens in an fixed rate exchagne\",\"params\":{\"exchangeId\":\"the exchange ID\"},\"return\":\"supply\"},\"isActive(bytes32)\":{\"details\":\"isActive checks whether exchange is active\",\"params\":{\"exchangeId\":\"a unique exchange idnetifier\"},\"return\":\"true if exchange is true, otherwise returns false\"},\"setRate(bytes32,uint256)\":{\"details\":\"setRate changes the fixed rate for an exchange with a new rate\",\"params\":{\"exchangeId\":\"a unique exchange idnetifier\",\"newRate\":\"new fixed rate value\"}},\"swap(bytes32,uint256)\":{\"details\":\"swap atomic swap between two registered fixed rate exchange.\",\"params\":{\"dataTokenAmount\":\"the amount of data tokens to be exchanged\",\"exchangeId\":\"a unique exchange idnetifier \"}},\"toggleExchangeState(bytes32)\":{\"details\":\"toggleExchangeState toggles the active state of an existing exchange\",\"params\":{\"exchangeId\":\"a unique exchange idnetifier\"}}},\"title\":\"FixedRateExchange\"},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"/ocean/ocean-contracts/contracts/fixedRate/FixedRateExchange.sol\":\"FixedRateExchange\"},\"evmVersion\":\"byzantium\",\"libraries\":{},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"/ocean/ocean-contracts/contracts/fixedRate/FixedRateExchange.sol\":{\"keccak256\":\"0xff9de548d8fc2ed7f3ba9ec63f839e164152b48f9ca0e50b8c8e31c8d4de14c4\",\"urls\":[\"bzzr://fcff28f27252fc99900599258b20062220c7084b5efec438cedde9bb47723377\"]},\"/ocean/ocean-contracts/contracts/interfaces/IERC20Template.sol\":{\"keccak256\":\"0x022ebed2ba4949e96a05cc394cf690d8fd3190a4733cebe8cbe930ac25cfde18\",\"urls\":[\"bzzr://2fa3d5cae14f0af7d78f6e1d13bc41854082c03ab2f86462ebb09afda88ee6e9\"]},\"openzeppelin-solidity/contracts/math/SafeMath.sol\":{\"keccak256\":\"0x640b6dee7a4b830bdfd52b5031a07fc2b12209f5b2e29e5d364a7d37f69d8076\",\"urls\":[\"bzzr://292843005e754e752644f767477ec5ad7a1ffc91ddb18c38b8079c62f3993cad\"]}},\"version\":1}",
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"source": "pragma solidity 0.5.7;\n// Copyright BigchainDB GmbH and Ocean Protocol contributors\n// SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)\n// Code is Apache-2.0 and docs are CC-BY-4.0\n\nimport '../interfaces/IERC20Template.sol';\nimport 'openzeppelin-solidity/contracts/math/SafeMath.sol';\n\n/**\n * @title FixedRateExchange\n * @dev FixedRateExchange is a fixed rate exchange Contract\n * Marketplaces uses this contract to allow consumers \n * exchanging datatokens with ocean token using a fixed \n * exchange rate.\n */\ncontract FixedRateExchange {\n using SafeMath for uint256;\n uint256 private constant BASE = 10 ** 18;\n struct Exchange {\n bool active;\n address exchangeOwner;\n address dataToken;\n address baseToken;\n uint256 fixedRate;\n }\n\n // maps an exchangeId to an exchange\n mapping(bytes32 => Exchange) private exchanges;\n bytes32[] private exchangeIds;\n\n modifier onlyActiveExchange(\n bytes32 exchangeId\n )\n {\n require(\n exchanges[exchangeId].fixedRate != 0 &&\n exchanges[exchangeId].active == true,\n 'FixedRateExchange: Exchange does not exist!'\n );\n _;\n }\n\n modifier onlyExchangeOwner(\n bytes32 exchangeId\n )\n {\n require(\n exchanges[exchangeId].exchangeOwner == msg.sender,\n 'FixedRateExchange: invalid exchange owner'\n );\n _;\n }\n\n event ExchangeCreated(\n bytes32 indexed exchangeId,\n address indexed baseToken,\n address indexed dataToken,\n address exchangeOwner,\n uint256 fixedRate\n );\n\n event ExchangeRateChanged(\n bytes32 indexed exchangeId,\n address indexed exchangeOwner,\n uint256 newRate\n );\n\n event ExchangeActivated(\n bytes32 indexed exchangeId,\n address indexed exchangeOwner\n );\n\n event ExchangeDeactivated(\n bytes32 indexed exchangeId,\n address indexed exchangeOwner\n );\n\n event Swapped(\n bytes32 indexed exchangeId,\n address indexed by,\n uint256 baseTokenSwappedAmount,\n uint256 dataTokenSwappedAmount\n );\n\n /**\n * @dev create\n * creates new exchange pairs between base token\n * (ocean token) and data tokens.\n * @param baseToken refers to a ocean token contract address\n * @param dataToken refers to a data token contract address\n * @param fixedRate refers to the exact fixed exchange rate in wei\n */\n function create(\n address baseToken,\n address dataToken,\n uint256 fixedRate\n )\n external\n {\n require(\n baseToken != address(0),\n 'FixedRateExchange: Invalid basetoken, zero address'\n );\n require(\n dataToken != address(0),\n 'FixedRateExchange: Invalid datatoken, zero address'\n );\n require(\n baseToken != dataToken,\n 'FixedRateExchange: Invalid datatoken, equals basetoken'\n );\n require(\n fixedRate != 0, \n 'FixedRateExchange: Invalid exchange rate value'\n );\n bytes32 exchangeId = generateExchangeId(\n baseToken,\n dataToken,\n msg.sender\n );\n require(\n exchanges[exchangeId].fixedRate == 0,\n 'FixedRateExchange: Exchange already exists!'\n );\n exchanges[exchangeId] = Exchange({\n active: true,\n exchangeOwner: msg.sender,\n dataToken: dataToken,\n baseToken: baseToken,\n fixedRate: fixedRate\n });\n exchangeIds.push(exchangeId);\n\n emit ExchangeCreated(\n exchangeId,\n baseToken,\n dataToken,\n msg.sender,\n fixedRate\n );\n\n emit ExchangeActivated(\n exchangeId,\n msg.sender\n );\n }\n\n /**\n * @dev generateExchangeId\n * creates unique exchange identifier for two token pairs.\n * @param baseToken refers to a ocean token contract address\n * @param dataToken refers to a data token contract address\n * @param exchangeOwner exchange owner address\n */\n function generateExchangeId(\n address baseToken,\n address dataToken,\n address exchangeOwner\n )\n public\n pure\n returns (bytes32)\n {\n return keccak256(\n abi.encode(\n baseToken,\n dataToken,\n exchangeOwner\n )\n );\n }\n \n /**\n * @dev CalcInGivenOut\n * Calculates how many basetokens are needed to get specifyed amount of datatokens\n * @param exchangeId a unique exchange idnetifier \n * @param dataTokenAmount the amount of data tokens to be exchanged\n */\n function CalcInGivenOut(\n bytes32 exchangeId,\n uint256 dataTokenAmount\n )\n public\n view\n onlyActiveExchange(\n exchangeId\n )\n returns (uint256 baseTokenAmount)\n {\n baseTokenAmount = dataTokenAmount.mul(\n exchanges[exchangeId].fixedRate).div(BASE);\n }\n \n /**\n * @dev swap\n * atomic swap between two registered fixed rate exchange.\n * @param exchangeId a unique exchange idnetifier \n * @param dataTokenAmount the amount of data tokens to be exchanged\n */\n function swap(\n bytes32 exchangeId,\n uint256 dataTokenAmount\n )\n external\n onlyActiveExchange(\n exchangeId\n )\n {\n require(\n dataTokenAmount != 0,\n 'FixedRateExchange: zero data token amount'\n );\n uint256 baseTokenAmount = CalcInGivenOut(exchangeId,dataTokenAmount);\n require(\n IERC20Template(exchanges[exchangeId].baseToken).transferFrom(\n msg.sender,\n exchanges[exchangeId].exchangeOwner,\n baseTokenAmount\n ),\n 'FixedRateExchange: transferFrom failed in the baseToken contract'\n );\n require(\n IERC20Template(exchanges[exchangeId].dataToken).transferFrom(\n exchanges[exchangeId].exchangeOwner,\n msg.sender,\n dataTokenAmount\n ),\n 'FixedRateExchange: transferFrom failed in the dataToken contract'\n );\n\n emit Swapped(\n exchangeId,\n msg.sender,\n baseTokenAmount,\n dataTokenAmount\n );\n }\n\n /**\n * @dev getNumberOfExchanges\n * gets the total number of registered exchanges\n * @return total number of registered exchange IDs\n */\n function getNumberOfExchanges()\n external\n view\n returns (uint256)\n {\n return exchangeIds.length;\n }\n\n /**\n * @dev setRate\n * changes the fixed rate for an exchange with a new rate\n * @param exchangeId a unique exchange idnetifier\n * @param newRate new fixed rate value\n */\n function setRate(\n bytes32 exchangeId,\n uint256 newRate\n )\n external\n onlyExchangeOwner(exchangeId)\n {\n require(\n newRate != 0,\n 'FixedRateExchange: Ratio must be >0'\n );\n\n exchanges[exchangeId].fixedRate = newRate;\n emit ExchangeRateChanged(\n exchangeId,\n msg.sender,\n newRate\n );\n }\n\n /**\n * @dev toggleExchangeState\n * toggles the active state of an existing exchange\n * @param exchangeId a unique exchange idnetifier\n */\n function toggleExchangeState(\n bytes32 exchangeId\n )\n external\n onlyExchangeOwner(exchangeId)\n {\n if(exchanges[exchangeId].active){\n exchanges[exchangeId].active = false;\n emit ExchangeDeactivated(\n exchangeId,\n msg.sender\n );\n } else {\n exchanges[exchangeId].active = true;\n emit ExchangeActivated(\n exchangeId,\n msg.sender\n );\n }\n }\n\n /**\n * @dev getRate\n * gets the current fixed rate for an exchange\n * @param exchangeId a unique exchange idnetifier\n * @return fixed rate value\n */\n function getRate(\n bytes32 exchangeId\n )\n external\n view\n returns(uint256)\n {\n return exchanges[exchangeId].fixedRate;\n }\n\n /**\n * @dev getSupply\n * gets the current supply of datatokens in an fixed\n * rate exchagne\n * @param exchangeId the exchange ID\n * @return supply\n */\n function getSupply(bytes32 exchangeId)\n public\n view\n returns (uint256 supply)\n {\n if(exchanges[exchangeId].active == false)\n supply = 0;\n else {\n uint256 balance = IERC20Template(exchanges[exchangeId].dataToken)\n .balanceOf(exchanges[exchangeId].exchangeOwner);\n uint256 allowance = IERC20Template(exchanges[exchangeId].dataToken)\n .allowance(exchanges[exchangeId].exchangeOwner, address(this));\n if(balance < allowance)\n supply = balance;\n else\n supply = allowance;\n }\n }\n\n /**\n * @dev getExchange\n * gets all the exchange details\n * @param exchangeId a unique exchange idnetifier\n * @return all the exchange details including the exchange Owner\n * the dataToken contract address, the base token address, the \n * fixed rate, whether the exchange is active and the supply or the \n * the current data token liquidity.\n */\n function getExchange(\n bytes32 exchangeId\n )\n external\n view\n returns (\n address exchangeOwner,\n address dataToken,\n address baseToken,\n uint256 fixedRate,\n bool active,\n uint256 supply\n )\n {\n Exchange memory exchange = exchanges[exchangeId];\n exchangeOwner = exchange.exchangeOwner;\n dataToken = exchange.dataToken;\n baseToken = exchange.baseToken;\n fixedRate = exchange.fixedRate;\n active = exchange.active;\n supply = getSupply(exchangeId);\n }\n\n /**\n * @dev getExchanges\n * gets all the exchanges list\n * @return a list of all registered exchange Ids\n */\n function getExchanges()\n external \n view \n returns (bytes32[] memory)\n {\n return exchangeIds;\n }\n\n /**\n * @dev isActive\n * checks whether exchange is active\n * @param exchangeId a unique exchange idnetifier\n * @return true if exchange is true, otherwise returns false\n */\n function isActive(\n bytes32 exchangeId\n )\n external\n view\n returns (bool)\n {\n return exchanges[exchangeId].active;\n }\n}\n",
"sourcePath": "/ocean/ocean-contracts/contracts/fixedRate/FixedRateExchange.sol",
"ast": {
"absolutePath": "/ocean/ocean-contracts/contracts/fixedRate/FixedRateExchange.sol",
"exportedSymbols": {
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"documentation": "@title FixedRateExchange\n@dev FixedRateExchange is a fixed rate exchange Contract\n Marketplaces uses this contract to allow consumers \n exchanging datatokens with ocean token using a fixed \n exchange rate.",
"fullyImplemented": true,
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}
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}
},
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},
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},
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},
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},
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},
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"details": "setRate changes the fixed rate for an exchange with a new rate",
"params": {
"exchangeId": "a unique exchange idnetifier",
"newRate": "new fixed rate value"
}
},
"swap(bytes32,uint256)": {
"details": "swap atomic swap between two registered fixed rate exchange.",
"params": {
"dataTokenAmount": "the amount of data tokens to be exchanged",
"exchangeId": "a unique exchange idnetifier "
}
},
"toggleExchangeState(bytes32)": {
"details": "toggleExchangeState toggles the active state of an existing exchange",
"params": {
"exchangeId": "a unique exchange idnetifier"
}
}
},
"title": "FixedRateExchange"
},
"userdoc": {
"methods": {}
}
}
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