7 Commits

Author	SHA1	Message	Date
Ian Norden	8ce75fe5ad	Generic watcher that takes a contract address, grabs the contract abi and starting block number, creates custom event filters, and extracts and transforms event data into postgres. Can configure to look at only a subset of events through CLI flag. Building but needs testing.	2018-11-03 14:00:25 -05:00
Ian Norden	d66e50dad6	Changes to address Rob's comments. Added generic/event_triggered transformer, tests, and repo migrations for Burn and Mint events	2018-11-03 13:49:23 -05:00
Ian Norden	4aa403d90d	event_triggered transformer, transformer tests, and integrations tests for Transfer and Approval events	2018-11-03 13:49:23 -05:00
Ian Norden	aa2068bd08	adjust retriever to pull token holder addresses from Transfer and Approval events (iterating over Approvals might be redundant); edit Makefile to import new missing dependencies of go-ethereum/accounts/keystore, organizing mocks and adding event related mocks and filters	2018-11-03 13:49:23 -05:00
Ian Norden	55a73c5797	work on erc20 event_triggered functionality and generic helper for log unpacking and converting. helpers.ConvertToLog and helpers.createTopics have been adjusted to be variadic to work with event logs with any number of topics. Also uncovered issue with Dai and TrueUSD that means they doesn't really conform to the ERC20 standard. this is because they named their arguments to standard events like Approval and Trasnfer differently (e.g. Approval(src address, guy address, wad uint) and Approval(owner address, spender address, value uint) instead of the standard which is Approval(tokenOwner address, spender address, tokens uint)). This causes incompatibility with generic ERC20 entities and converters for these events.	2018-11-03 13:49:23 -05:00
Ian Norden	9b41000b88	Moved fetcher to generic directory (methods have to remain public since it is in seperate package now), added FetchHash method, created ERC20 and generic getters which call the fetcher with specific contract methods (GetTotalSupply, GetBalance, GetAllowance for ERC20 getter, and GetOwner, GetStoppedStatus, GetStringName, GetHashName, GetStringSymbol, GetHashSymbol, and GetDecimals for generic getter). Getter tests cover all but GetBalance and GetAllowance, and also cover all of the Fetcher methods- but with only nil methodArgs. GetAllowance and GetBalance tests are not working against infura and these are the only contract method calls with arguments passed in so I suspect this might be where the issue lies. Have tested GetBalance using previous version of FetchContractData without the variadic input to the Pack method and it fails with the same error so I don’t think it is due to those changes.	2018-11-03 13:49:23 -05:00
Elizabeth Engelman	b6f93e735f	Add ERC20 token watcher example ... - starting with the totalSupply function - sets contract config on transformer by passing it into the transformer initializer - handles block records with the same number for different nodes for both creating token_supply records, and finding missing blocks	2018-11-03 13:49:23 -05:00