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Add contribution veto function

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Allows anybody with the VETO_CONTRIBUTION_ROLE to veto a contribution
and thus prevent that the contribution can be claimed.
So far like the ADD_CONTRIBUTION_ROLE any contributor is allowed to
veto.
This commit is contained in:
bumi
2019-03-28 11:06:19 +01:00
parent b6f34ac9a5
commit dfa55516ec
4 changed files with 29 additions and 2 deletions
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5
apps/contribution/arapp.json
View File

@@ -9,6 +9,11 @@
"name": "Manage token contract",
"id": "MANAGE_TOKEN_CONTRACT_ROLE",
"params": []
},
{
"name": "Veto contributions",
"id": "VETO_CONTRIBUTION_ROLE",
"params": []
}
],
"environments": {

18
apps/contribution/contracts/Contribution.sol
View File

@@ -9,6 +9,7 @@ interface IToken {
contract Contribution is AragonApp {
bytes32 public constant ADD_CONTRIBUTION_ROLE = keccak256("ADD_CONTRIBUTION_ROLE");
bytes32 public constant VETO_CONTRIBUTION_ROLE = keccak256("VETO_CONTRIBUTION_ROLE");
bytes32 public constant KERNEL_APP_ADDR_NAMESPACE = 0xd6f028ca0e8edb4a8c9757ca4fdccab25fa1e0317da1188108f7d2dee14902fb;
// ensure alphabetic order
@@ -24,6 +25,7 @@ contract Contribution is AragonApp {
uint8 hashSize;
string tokenMetadataURL;
uint claimAfterBlock;
bool vetoed;
bool exists;
}
string internal name_;
@@ -39,6 +41,7 @@ contract Contribution is AragonApp {
event ContributionAdded(uint256 id, address indexed contributor, uint256 amount);
event ContributionClaimed(uint256 id, address indexed contributor, uint256 amount);
event ContributionVetoed(uint256 id, address vetoedByAccount);
function initialize(bytes32[4] _appIds) public onlyInit {
appIds = _appIds;
@@ -77,7 +80,7 @@ contract Contribution is AragonApp {
return contributions[contributionId].tokenMetadataURL;
}
function getContribution(uint256 contributionId) public view returns (uint256 id, address contributor, uint256 amount, bool claimed, bytes32 hashDigest, uint8 hashFunction, uint8 hashSize, uint claimAfterBlock, bool exists) {
function getContribution(uint256 contributionId) public view returns (uint256 id, address contributor, uint256 amount, bool claimed, bytes32 hashDigest, uint8 hashFunction, uint8 hashSize, uint claimAfterBlock, bool exists, bool vetoed) {
id = contributionId;
ContributionData storage c = contributions[id];
return (
@@ -89,7 +92,8 @@ contract Contribution is AragonApp {
c.hashFunction,
c.hashSize,
c.claimAfterBlock,
c.exists
c.exists,
c.vetoed
);
}
@@ -114,10 +118,20 @@ contract Contribution is AragonApp {
emit ContributionAdded(contributionId, contributorAccount, amount);
}
function veto(uint256 contributionId) public isInitialized auth(VETO_CONTRIBUTION_ROLE) {
ContributionData storage c = contributions[contributionId];
require(c.exists, 'NOT_FOUND');
require(!c.claimed, 'ALREADY_CLAIMED');
c.vetoed = true;
emit ContributionVetoed(contributionId, msg.sender);
}
function claim(uint256 contributionId) public isInitialized {
ContributionData storage c = contributions[contributionId];
require(c.exists, 'NOT_FOUND');
require(!c.claimed, 'ALREADY_CLAIMED');
require(!c.vetoed, 'VETOED');
require(block.number > c.claimAfterBlock, 'NOT_CLAIMABLE');
c.claimed = true;