In this commit, the RPC API is adapted to run on top of the new Go API.
This required lots of changes to many packages, but has a few side
benefits:
- Ethereum and LightEthereum can now be used as a contract backend.
- Some duplicated code could be removed (there is added duplication in
other places though)
- It is now much easier to see which operations are unsupported with the
light client. Package les previously relied on the full node RPC API
backend, which masked several issues because the RPC API performed
direct access to the chain database.
Changes to packages in detail:
accounts/abi/bind:
- Contract call boilerplate has moved to package core.
cmd/utils:
- les now inherits the event.TypeMux from the Node instance
contracts/release:
- The ReleaseService now uses Ethereum and LightEthereum as backend.
core:
- MissingNumber is exposed so it can be used in package eth.
- GetTransaction now returns the index as an int, for convenience
reasons.
- ApplyCallMessage has been added as the new one and only
implementation of read-only contract calls.
- TxPool exposes NonceAt instead of the more general accessor for the
ManagedState.
core/types:
- Signer.SignECDSA is gone (it was basically unused).
- WithSignature doesn't return an error anymore (all implementations panic for
invalid length). I made this change to avoid code duplication in the API.
eth:
- EthApiBackend is gone. In its place, Ethereum gains many new methods
which implement a large portion of the new Go API. It does not
yet support event subscriptions and log filtering.
- Some accessors for internal objects are gone.
- ethapi.PrivateDebugAPI and ethapi.TxPoolDebugAPI are now created in
package eth for dependency reasons.
eth/downloader:
- Progress returns a pointer to simplify callers.
eth/filters:
- The Backend interface is simpler and uses the stable Go API where
possible. The new BlockReceipts method saves one DB read because
BlockReceipts also takes a block number argument.
- ChainDB is no longer passed via the Backend interface.
- EventSystem now relies on HeaderByHash for reorgs in light client mode
instead of reading from the chain database.
eth/gasprice:
- The LightPriceOracle now uses ethereum.ChainReader instead of
ethapi.Backend.
ethclient:
- TransactionByHash is adapted for the last-minute API change which
adds the isPending return value.
internal/ethapi:
- PublicTxPoolAPI is now called TxPoolDebugAPI, moved to its own file
and talks to the transaction pool instead of using the main Backend.
- The API no longer accesses the chain database directly. All access
is mediated through Backend methods.
- The backend is now split into three interfaces.
Implementing Backend is mandatory but does not require the pending
state. The other two (PendingState, TransactionInclusionBlock) are
optional and discovered at runtime.
les:
- LesApiBackend is gone, LightEthereum gets all the methods.
- Weird accessors copied from package eth are now gone as well.
light:
- TxPool.Stats now returns a queued count of zero. It implements the
ethapi.TxPool interface and can be used with TxPoolDebugAPI.
This commit implements EIP158 part 1, 2, 3 & 4
1. If an account is empty it's no longer written to the trie. An empty
account is defined as (balance=0, nonce=0, storage=0, code=0).
2. Delete an empty account if it's touched
3. An empty account is redefined as either non-existent or empty.
4. Zero value calls and zero value suicides no longer consume the 25k
reation costs.
params: moved core/config to params
Signed-off-by: Jeffrey Wilcke <jeffrey@ethereum.org>
These accessors were introduced by light client changes, but
the only method that is actually used is GetNumberU64. This
commit replaces all uses of .GetNumberU64 with .Number.Uint64.
Added chain configuration options and write out during genesis database
insertion. If no "config" was found, nothing is written to the database.
Configurations are written on a per genesis base. This means
that any chain (which is identified by it's genesis hash) can have their
own chain settings.
* Removed some strange code that didn't apply state reverting properly
* Refactored code setting from vm & state transition to the executioner
* Updated tests
* change gas cost for contract creating txs
* invalidate signature with s value greater than secp256k1 N / 2
* OOG contract creation if not enough gas to store code
* new difficulty adjustment algorithm
* new DELEGATECALL op code
