This commit solves several issues concerning the genesis block:
* Genesis/ChainConfig loading was handled by cmd/geth code. This left
library users in the cold. They could specify a JSON-encoded
string and overwrite the config, but didn't get any of the additional
checks performed by geth.
* Decoding and writing of genesis JSON was conflated in
WriteGenesisBlock. This made it a lot harder to embed the genesis
block into the forthcoming config file loader. This commit changes
things so there is a single Genesis type that represents genesis
blocks. All uses of Write*Genesis* are changed to use the new type
instead.
* If the chain config supplied by the user was incompatible with the
current chain (i.e. the chain had already advanced beyond a scheduled
fork), it got overwritten. This is not an issue in practice because
previous forks have always had the highest total difficulty. It might
matter in the future though. The new code reverts the local chain to
the point of the fork when upgrading configuration.
The change to genesis block data removes compression library
dependencies from package core.
Full documentation for the Ethereum Name Service can be found as EIP 137.
This package offers a simple binding that streamlines the registration arbitrary utf8 domain names to swarm content hashes.
Development
The SOL file in contract subdirectory implements the ENS root registry, a simple
first-in-first-served registrar for the root namespace, and a simple resolver contract;
they're used in tests, and can be used to deploy these contracts for your own purposes.
Felix Lange
37dd9086ec