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Transform events into logs

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This commit is contained in:
Prathamesh Musale 2024-09-16 16:03:04 +05:30
parent 8d5fb20d2e
commit 190580f668
2 changed files with 49 additions and 27 deletions
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6
packages/graph-node/test/utils/indexer.ts
View File

@ -91,6 +91,12 @@ export class Indexer implements IndexerInterface {
return undefined;
}
async getEvents (options: FindManyOptions<EventInterface>): Promise<Array<EventInterface>> {
assert(options);
return [];
}
async getSyncStatus (): Promise<SyncStatusInterface | undefined> {
return undefined;
}

70
packages/util/src/eth-rpc-handlers.ts
View File

@ -17,7 +17,9 @@ const ERROR_CONTRACT_NOT_RECOGNIZED = 'Contract not recognized';
const ERROR_CONTRACT_METHOD_NOT_FOUND = 'Contract method not found';
const ERROR_METHOD_NOT_IMPLEMENTED = 'Method not implemented';
const ERROR_INVALID_BLOCK_TAG = 'Invalid block tag';
const ERROR_INVALID_BLOCK_HASH = 'Invalid block hash';
const ERROR_BLOCK_NOT_FOUND = 'Block not found';
const ERROR_TOPICS_FILTER_NOT_SUPPORTED = 'Topics filter not supported';
const DEFAULT_BLOCK_TAG = 'latest';
@ -101,7 +103,6 @@ export const createEthRPCHandlers = async (
},
eth_getLogs: async (args: any, callback: any) => {
// TODO: Implement
try {
if (args.length === 0) {
throw new ErrorWithCode(CODE_INVALID_PARAMS, ERROR_CONTRACT_INSUFFICIENT_PARAMS);
@ -109,9 +110,15 @@ export const createEthRPCHandlers = async (
const params = args[0];
// Parse arg params in to where options
// Parse arg params into where options
const where: FindConditions<EventInterface> = {};
// TODO: Support topics filter
if (params.topics) {
throw new ErrorWithCode(CODE_INVALID_PARAMS, ERROR_TOPICS_FILTER_NOT_SUPPORTED);
}
// Address filter, address or a list of addresses
if (params.address) {
if (Array.isArray(params.address)) {
where.contract = In(params.address);
@ -120,39 +127,35 @@ export const createEthRPCHandlers = async (
}
}
let blockFilter = false;
// Block hash takes precedence over fromBlock / toBlock if provided
if (params.blockHash) {
// TODO: validate blockHash?
blockFilter = true;
// Validate input block hash
if (!utils.isHexString(params.blockHash, 32)) {
throw new ErrorWithCode(CODE_INVALID_PARAMS, ERROR_INVALID_BLOCK_HASH);
}
where.block = {
blockHash: params.blockHash
};
} else if (params.fromBlock || params.toBlock) {
blockFilter = true;
const fromBlockNumber = params.fromBlock ? await parseEthGetLogsBlockTag(indexer, params.fromBlock) : null;
const toBlockNumber = params.toBlock ? await parseEthGetLogsBlockTag(indexer, params.toBlock) : null;
if (!params.fromBlock) {
const toBlockNumber = await parseEthGetLogsBlockTag(indexer, params.toBlock);
where.block = {
blockNumber: LessThanOrEqual(toBlockNumber)
};
} else if (!params.toBlock) {
const fromBlockNumber = await parseEthGetLogsBlockTag(indexer, params.fromBlock);
where.block = {
blockNumber: MoreThanOrEqual(fromBlockNumber)
};
} else {
const fromBlockNumber = await parseEthGetLogsBlockTag(indexer, params.fromBlock);
const toBlockNumber = await parseEthGetLogsBlockTag(indexer, params.toBlock);
where.block = {
blockNumber: Between(fromBlockNumber, toBlockNumber)
};
if (fromBlockNumber && toBlockNumber) {
// Both fromBlock and toBlock set
where.block = { blockNumber: Between(fromBlockNumber, toBlockNumber) };
} else if (fromBlockNumber) {
// Only fromBlock set
where.block = { blockNumber: MoreThanOrEqual(fromBlockNumber) };
} else if (toBlockNumber) {
// Only toBlock set
where.block = { blockNumber: LessThanOrEqual(toBlockNumber) };
}
}
// TODO: Construct topics filter
// Fetch events from the db
const events = await indexer.getEvents({ where, relations: blockFilter ? ['block'] : undefined });
// Load block relation
const events = await indexer.getEvents({ where, relations: ['block'] });
// Transform events into result logs
const result = await transformEventsToLogs(events);
@ -218,6 +221,19 @@ const parseEthGetLogsBlockTag = async (indexer: IndexerInterface, blockTag: stri
};
const transformEventsToLogs = async (events: Array<EventInterface>): Promise<any[]> => {
// TODO: Implement
return events;
return events.map(event => {
const parsedExtraInfo = JSON.parse(event.extraInfo);
return {
address: event.contract.toLowerCase(),
blockHash: event.block.blockHash,
blockNumber: `0x${event.block.blockNumber.toString(16)}`,
transactionHash: event.txHash,
transactionIndex: `0x${parsedExtraInfo.tx.index.toString(16)}`,
logIndex: `0x${parsedExtraInfo.logIndex.toString(16)}`,
data: parsedExtraInfo.data,
topics: parsedExtraInfo.topics,
removed: event.block.isPruned
};
});
};