cerc-io/watcher-ts
16
1
Fork 0
mirror of https://github.com/cerc-io/watcher-ts synced 2024-11-19 20:36:19 +00:00
Code Issues Packages Projects Releases Wiki Activity

Handle Position Manager DecreaseLiquidity event. (#148)

Browse Source 
Co-authored-by: nabarun <nabarun@deepstacksoft.com>
This commit is contained in:
Ashwin Phatak 2021-07-19 10:43:29 +05:30 committed by GitHub
parent 3477366458
commit c1ef96ba2e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 52 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
packages/uni-info-watcher/src/events.ts
View File

@ -70,6 +70,14 @@ interface IncreaseLiquidityEvent {
amount1: bigint;
}
interface DecreaseLiquidityEvent {
__typename: 'DecreaseLiquidityEvent';
tokenId: bigint;
liquidity: bigint;
amount0: bigint;
amount1: bigint;
}
interface Block {
number: number;
hash: string;
@ -85,7 +93,7 @@ interface ResultEvent {
block: Block;
tx: Transaction;
contract: string;
event: PoolCreatedEvent | InitializeEvent | MintEvent | BurnEvent | SwapEvent | IncreaseLiquidityEvent;
event: PoolCreatedEvent | InitializeEvent | MintEvent | BurnEvent | SwapEvent | IncreaseLiquidityEvent | DecreaseLiquidityEvent;
proof: {
data: string;
}
@ -153,6 +161,11 @@ export class EventWatcher {
this._handleIncreaseLiquidity(block, contract, tx, event as IncreaseLiquidityEvent);
break;
case 'DecreaseLiquidityEvent':
log('NFPM DecreaseLiquidity event', contract);
this._handleDecreaseLiquidity(block, contract, tx, event as DecreaseLiquidityEvent);
break;
default:
break;
}
@ -731,7 +744,7 @@ export class EventWatcher {
return;
}
// Temp fix.
// Temp fix from Subgraph mapping code.
if (utils.getAddress(position.pool.id) === utils.getAddress('0x8fe8d9bb8eeba3ed688069c3d6b556c9ca258248')) {
return;
}
@ -753,6 +766,36 @@ export class EventWatcher {
await this._savePositionSnapshot(position, block, tx);
}
async _handleDecreaseLiquidity (block: Block, contractAddress: string, tx: Transaction, event: DecreaseLiquidityEvent): Promise<void> {
const { number: blockNumber } = block;
const position = await this._getPosition(block, contractAddress, tx, BigInt(event.tokenId));
// Position was not able to be fetched.
if (position == null) {
return;
}
// Temp fix from Subgraph mapping code.
if (utils.getAddress(position.pool.id) === utils.getAddress('0x8fe8d9bb8eeba3ed688069c3d6b556c9ca258248')) {
return;
}
const token0 = position.token0;
const token1 = position.token1;
const amount0 = convertTokenToDecimal(BigInt(event.amount0), BigInt(token0.decimals));
const amount1 = convertTokenToDecimal(BigInt(event.amount1), BigInt(token1.decimals));
position.liquidity = BigInt(position.liquidity) - BigInt(event.liquidity);
position.depositedToken0 = position.depositedToken0.plus(amount0);
position.depositedToken1 = position.depositedToken1.plus(amount1);
await this._updateFeeVars(position, block, contractAddress, BigInt(event.tokenId));
await this._db.savePosition(position, blockNumber);
await this._savePositionSnapshot(position, block, tx);
}
async _getPosition (block: Block, contractAddress: string, tx: Transaction, tokenId: bigint): Promise<Position | null> {
const { number: blockNumber, hash: blockHash, timestamp: blockTimestamp } = block;
const { hash: txHash } = tx;

7
packages/uni-watcher/src/client.ts
View File

@ -81,6 +81,13 @@ export class Client {
amount0
amount1
}
... on DecreaseLiquidityEvent {
tokenId
liquidity
amount0
amount1
}
}
}
}