Created staking mapping contract

contracts/mapping/staking.sol

@@ -0,0 +1,94 @@
+pragma solidity ^0.6.0;
+pragma experimental ABIEncoderV2;
+
+interface ConnectorsInterface {
+    function chief(address) external view returns (bool);
+}
+
+interface IndexInterface {
+    function master() external view returns (address);
+}
+
+contract BytesHelper {
+    /**
+     * @dev Convert String to bytes32.
+    */
+    function stringToBytes32(string memory str) internal pure returns (bytes32 result) {
+        require(bytes(str).length != 0, "String-Empty");
+        // solium-disable-next-line security/no-inline-assembly
+        assembly {
+            result := mload(add(str, 32))
+        }
+    }
+
+    /**
+     * @dev Convert bytes32 to String.
+    */
+    function bytes32ToString(bytes32 _bytes32) internal pure returns (string memory) {
+        bytes32  _temp;
+        uint count;
+        for (uint256 i; i < 32; i++) {
+            _temp = _bytes32[i];
+            if( _temp != bytes32(0)) {
+                count += 1;
+            }
+        }
+        bytes memory bytesArray = new bytes(count);
+        for (uint256 i; i < count; i++) {
+                bytesArray[i] = (_bytes32[i]);
+        }
+        return (string(bytesArray));
+    }
+}
+contract Helpers is BytesHelper {
+    address public constant connectors = 0xD6A602C01a023B98Ecfb29Df02FBA380d3B21E0c;
+    address public constant instaIndex = 0x2971AdFa57b20E5a416aE5a708A8655A9c74f723;
+    uint public version = 1;
+
+    struct StakingData {
+        address stakingPool;
+        address stakingToken;
+    }
+    mapping (bytes32 => StakingData) public stakingMapping;
+
+    event LogAddStakingMapping(string stakingName, bytes32 stakingType, address stakingAddress, address stakingToken);
+    event LogRemoveStakingMapping(string stakingName, bytes32 stakingType, address stakingAddress, address stakingToken);
+
+    modifier isChief {
+        require(
+            ConnectorsInterface(connectors).chief(msg.sender) ||
+            IndexInterface(instaIndex).master() == msg.sender, "not-Chief");
+        _;
+    }
+    function addStakingMapping(string memory stakingName, address stakingAddress, address stakingToken) public isChief {
+        require(stakingAddress != address(0), "StakingPool-not-vaild");
+        require(stakingToken != address(0), "StakingToken-not-vaild");
+        require(bytes(stakingName).length < 32, "Lenght-exceeds"); // TODO - test this.
+        bytes32 stakeType = stringToBytes32(stakingName);
+        require(stakingMapping[stakeType].stakingPool == address(0), "StakingPool-Already-Added");
+        require(stakingMapping[stakeType].stakingToken == address(0), "StakingPool-Already-Added");
+
+        stakingMapping[stakeType] = StakingData(
+            stakingAddress,
+            stakingToken
+        );
+        emit LogAddStakingMapping(stakingName, stakeType, stakingAddress, stakingToken);
+    }
+
+    function removeStakingMapping(string memory stakingName, address stakingAddress) public isChief {
+        require(stakingAddress != address(0), "StakingPool-not-vaild");
+        require(bytes(stakingName).length < 32, "Lenght-exceeds"); // TODO - test this.
+        bytes32 stakeType = stringToBytes32(stakingName);
+        require(stakingMapping[stakeType].stakingPool != address(0), "StakingPool-Already-Added");
+        require(stakingMapping[stakeType].stakingToken != address(0), "StakingPool-Already-Added");
+        require(stakingMapping[stakeType].stakingPool == stakingAddress, "Not-same-staking-pool");
+
+        emit LogRemoveStakingMapping(stakingName, stakeType, stakingAddress, stakingMapping[stakeType].stakingToken);
+        delete stakingMapping[stakeType];
+    }
+}
+
+
+contract InstaMapping is Helpers {
+    string constant public name = "Synthetix-Mapping-v1";
+}