Blockchain explorer for Ethereum based network and a tool for inspecting and analyzing EVM based blockchains.

History

Luke Imhoff 0680973e64 fetched_balance_block_number instead of fetched_balance_at Fixes #243 Instead of getting the address balance at the latest block and recording the timestamp of the insert, which is only loosely correlated with even the latest block's timestamp on-chain, use the block number for the last time an address was used in the indexed address foreign keys in the chain: * blocks * miner_hash * internal_transactions * created_contract_address_hash * from_address_hash * to_address_hash * logs * address_hash * transactions * from_address_hash * to_address_hash To gather `fetched_balance_block_number` on reboot, `Explorer.Chain.stream_unfetched_addresses` queries across the above columns for the `MAX(blocks.number)`, which is used in `Explorer.Indexer.AddressBalanceFetcher.init/2`. During indexing, `Explorer.Indexer.AddressBalanceFetcher.async_fetch_balances/1` now requires a list of `%{block_number: Block.block_number(), hash: Hash.Truncated.t()}` instead of list of `Hash.Truncated.t()`. Having a `block_number` available for all importable entities's addresses required changing `Explorer.Indexer.AddressExtraction` to extract the `block_number` too. The use of `insert` in the factories was making tests that show the count not make sense, so the factories were switched to `build` because it means only the exact count is created when a default value is overridden. This does, unfortunately, mean that `params_for(factory)` no longer generates foreign keys and they must be set explicitly OR the association passed instead of the foreign key. Allow nil extracted fetched_balance_block_number when pending transaction NOTE: This is a database drop and reindex change.		7 years ago
..
config	Explorer.JSONRPC -> EthereumJSONRPC	7 years ago
lib	fetched_balance_block_number instead of fetched_balance_at	7 years ago
test	Start realtime index immediately from latest block on boot.	7 years ago
.formatter.exs	cd apps; mix new ethereum_jsonrpc	7 years ago
.gitignore	cd apps; mix new ethereum_jsonrpc	7 years ago
README.md	Explorer.JSONRPC -> EthereumJSONRPC	7 years ago
mix.exs	Store variable-length DATA as Explorer.Chain.Data	7 years ago

README.md

EthereumJSONRPC

Ethereum JSONRPC client.

Configuration

Configuration for parity URLs can be provided with the following mix config:

config :ethereum_jsonrpc,
  url: "https://sokol.poa.network",
  trace_url: "https://sokol-trace.poa.network",
  http: [recv_timeout: 60_000, timeout: 60_000, hackney: [pool: :ethereum_jsonrpc]]

Note: the tracing node URL is provided separately from :url, via :trace_url. The trace URL and is used for fetch_internal_transactions, which is only a supported method on tracing nodes. The :http option is passed directly to the HTTP library (HTTPoison), which forwards the options down to :hackney.

Installation

The OTP application :ethereum_jsonrpc can be used in other umbrella OTP applications by adding ethereum_jsonrpc to your list of dependencies in mix.exs:

def deps do
  [
    {:ethereum_jsonrpc, in_umbrella: true}
  ]
end