627 lines
25 KiB
Markdown
627 lines
25 KiB
Markdown
# EVM tool
|
|
|
|
The EVM tool provides a few useful subcommands to facilitate testing at the EVM
|
|
layer.
|
|
|
|
* transition tool (`t8n`) : a stateless state transition utility
|
|
* transaction tool (`t9n`) : a transaction validation utility
|
|
* block builder tool (`b11r`): a block assembler utility
|
|
|
|
## State transition tool (`t8n`)
|
|
|
|
|
|
The `evm t8n` tool is a stateless state transition utility. It is a utility
|
|
which can
|
|
|
|
1. Take a prestate, including
|
|
- Accounts,
|
|
- Block context information,
|
|
- Previous blockshashes (*optional)
|
|
2. Apply a set of transactions,
|
|
3. Apply a mining-reward (*optional),
|
|
4. And generate a post-state, including
|
|
- State root, transaction root, receipt root,
|
|
- Information about rejected transactions,
|
|
- Optionally: a full or partial post-state dump
|
|
|
|
### Specification
|
|
|
|
The idea is to specify the behaviour of this binary very _strict_, so that other
|
|
node implementors can build replicas based on their own state-machines, and the
|
|
state generators can swap between a \`geth\`-based implementation and a \`parityvm\`-based
|
|
implementation.
|
|
|
|
#### Command line params
|
|
|
|
Command line params that need to be supported are
|
|
|
|
```
|
|
--input.alloc value (default: "alloc.json")
|
|
--input.env value (default: "env.json")
|
|
--input.txs value (default: "txs.json")
|
|
--output.alloc value (default: "alloc.json")
|
|
--output.basedir value
|
|
--output.body value
|
|
--output.result value (default: "result.json")
|
|
--state.chainid value (default: 1)
|
|
--state.fork value (default: "GrayGlacier")
|
|
--state.reward value (default: 0)
|
|
--trace.memory (default: false)
|
|
--trace.nomemory (default: true)
|
|
--trace.noreturndata (default: true)
|
|
--trace.nostack (default: false)
|
|
--trace.returndata (default: false)
|
|
```
|
|
#### Objects
|
|
|
|
The transition tool uses JSON objects to read and write data related to the transition operation. The
|
|
following object definitions are required.
|
|
|
|
##### `alloc`
|
|
|
|
The `alloc` object defines the prestate that transition will begin with.
|
|
|
|
```go
|
|
// Map of address to account definition.
|
|
type Alloc map[common.Address]Account
|
|
// Genesis account. Each field is optional.
|
|
type Account struct {
|
|
Code []byte `json:"code"`
|
|
Storage map[common.Hash]common.Hash `json:"storage"`
|
|
Balance *big.Int `json:"balance"`
|
|
Nonce uint64 `json:"nonce"`
|
|
SecretKey []byte `json:"secretKey"`
|
|
}
|
|
```
|
|
|
|
##### `env`
|
|
|
|
The `env` object defines the environmental context in which the transition will
|
|
take place.
|
|
|
|
```go
|
|
type Env struct {
|
|
// required
|
|
CurrentCoinbase common.Address `json:"currentCoinbase"`
|
|
CurrentGasLimit uint64 `json:"currentGasLimit"`
|
|
CurrentNumber uint64 `json:"currentNumber"`
|
|
CurrentTimestamp uint64 `json:"currentTimestamp"`
|
|
Withdrawals []*Withdrawal `json:"withdrawals"`
|
|
// optional
|
|
CurrentDifficulty *big.Int `json:"currentDifficulty"`
|
|
CurrentRandom *big.Int `json:"currentRandom"`
|
|
CurrentBaseFee *big.Int `json:"currentBaseFee"`
|
|
ParentDifficulty *big.Int `json:"parentDifficulty"`
|
|
ParentGasUsed uint64 `json:"parentGasUsed"`
|
|
ParentGasLimit uint64 `json:"parentGasLimit"`
|
|
ParentTimestamp uint64 `json:"parentTimestamp"`
|
|
BlockHashes map[uint64]common.Hash `json:"blockHashes"`
|
|
ParentUncleHash common.Hash `json:"parentUncleHash"`
|
|
Ommers []Ommer `json:"ommers"`
|
|
}
|
|
type Ommer struct {
|
|
Delta uint64 `json:"delta"`
|
|
Address common.Address `json:"address"`
|
|
}
|
|
type Withdrawal struct {
|
|
Index uint64 `json:"index"`
|
|
ValidatorIndex uint64 `json:"validatorIndex"`
|
|
Recipient common.Address `json:"recipient"`
|
|
Amount *big.Int `json:"amount"`
|
|
}
|
|
```
|
|
|
|
##### `txs`
|
|
|
|
The `txs` object is an array of any of the transaction types: `LegacyTx`,
|
|
`AccessListTx`, or `DynamicFeeTx`.
|
|
|
|
```go
|
|
type LegacyTx struct {
|
|
Nonce uint64 `json:"nonce"`
|
|
GasPrice *big.Int `json:"gasPrice"`
|
|
Gas uint64 `json:"gas"`
|
|
To *common.Address `json:"to"`
|
|
Value *big.Int `json:"value"`
|
|
Data []byte `json:"data"`
|
|
V *big.Int `json:"v"`
|
|
R *big.Int `json:"r"`
|
|
S *big.Int `json:"s"`
|
|
SecretKey *common.Hash `json:"secretKey"`
|
|
}
|
|
type AccessList []AccessTuple
|
|
type AccessTuple struct {
|
|
Address common.Address `json:"address" gencodec:"required"`
|
|
StorageKeys []common.Hash `json:"storageKeys" gencodec:"required"`
|
|
}
|
|
type AccessListTx struct {
|
|
ChainID *big.Int `json:"chainId"`
|
|
Nonce uint64 `json:"nonce"`
|
|
GasPrice *big.Int `json:"gasPrice"`
|
|
Gas uint64 `json:"gas"`
|
|
To *common.Address `json:"to"`
|
|
Value *big.Int `json:"value"`
|
|
Data []byte `json:"data"`
|
|
AccessList AccessList `json:"accessList"`
|
|
V *big.Int `json:"v"`
|
|
R *big.Int `json:"r"`
|
|
S *big.Int `json:"s"`
|
|
SecretKey *common.Hash `json:"secretKey"`
|
|
}
|
|
type DynamicFeeTx struct {
|
|
ChainID *big.Int `json:"chainId"`
|
|
Nonce uint64 `json:"nonce"`
|
|
GasTipCap *big.Int `json:"maxPriorityFeePerGas"`
|
|
GasFeeCap *big.Int `json:"maxFeePerGas"`
|
|
Gas uint64 `json:"gas"`
|
|
To *common.Address `json:"to"`
|
|
Value *big.Int `json:"value"`
|
|
Data []byte `json:"data"`
|
|
AccessList AccessList `json:"accessList"`
|
|
V *big.Int `json:"v"`
|
|
R *big.Int `json:"r"`
|
|
S *big.Int `json:"s"`
|
|
SecretKey *common.Hash `json:"secretKey"`
|
|
}
|
|
```
|
|
|
|
##### `result`
|
|
|
|
The `result` object is output after a transition is executed. It includes
|
|
information about the post-transition environment.
|
|
|
|
```go
|
|
type ExecutionResult struct {
|
|
StateRoot common.Hash `json:"stateRoot"`
|
|
TxRoot common.Hash `json:"txRoot"`
|
|
ReceiptRoot common.Hash `json:"receiptsRoot"`
|
|
LogsHash common.Hash `json:"logsHash"`
|
|
Bloom types.Bloom `json:"logsBloom"`
|
|
Receipts types.Receipts `json:"receipts"`
|
|
Rejected []*rejectedTx `json:"rejected,omitempty"`
|
|
Difficulty *big.Int `json:"currentDifficulty"`
|
|
GasUsed uint64 `json:"gasUsed"`
|
|
BaseFee *big.Int `json:"currentBaseFee,omitempty"`
|
|
}
|
|
```
|
|
|
|
#### Error codes and output
|
|
|
|
All logging should happen against the `stderr`.
|
|
There are a few (not many) errors that can occur, those are defined below.
|
|
|
|
##### EVM-based errors (`2` to `9`)
|
|
|
|
- Other EVM error. Exit code `2`
|
|
- Failed configuration: when a non-supported or invalid fork was specified. Exit code `3`.
|
|
- Block history is not supplied, but needed for a `BLOCKHASH` operation. If `BLOCKHASH`
|
|
is invoked targeting a block which history has not been provided for, the program will
|
|
exit with code `4`.
|
|
|
|
##### IO errors (`10`-`20`)
|
|
|
|
- Invalid input json: the supplied data could not be marshalled.
|
|
The program will exit with code `10`
|
|
- IO problems: failure to load or save files, the program will exit with code `11`
|
|
|
|
```
|
|
# This should exit with 3
|
|
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --state.fork=Frontier+1346 2>/dev/null
|
|
exitcode:3 OK
|
|
```
|
|
#### Forks
|
|
### Basic usage
|
|
|
|
The chain configuration to be used for a transition is specified via the
|
|
`--state.fork` CLI flag. A list of possible values and configurations can be
|
|
found in [`tests/init.go`](../../tests/init.go).
|
|
|
|
#### Examples
|
|
##### Basic usage
|
|
|
|
Invoking it with the provided example files
|
|
```
|
|
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --state.fork=Berlin
|
|
```
|
|
Two resulting files:
|
|
|
|
`alloc.json`:
|
|
```json
|
|
{
|
|
"0x8a8eafb1cf62bfbeb1741769dae1a9dd47996192": {
|
|
"balance": "0xfeed1a9d",
|
|
"nonce": "0x1"
|
|
},
|
|
"0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
|
|
"balance": "0x5ffd4878be161d74",
|
|
"nonce": "0xac"
|
|
},
|
|
"0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
|
|
"balance": "0xa410"
|
|
}
|
|
}
|
|
```
|
|
`result.json`:
|
|
```json
|
|
{
|
|
"stateRoot": "0x84208a19bc2b46ada7445180c1db162be5b39b9abc8c0a54b05d32943eae4e13",
|
|
"txRoot": "0xc4761fd7b87ff2364c7c60b6c5c8d02e522e815328aaea3f20e3b7b7ef52c42d",
|
|
"receiptsRoot": "0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2",
|
|
"logsHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
|
|
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
|
|
"receipts": [
|
|
{
|
|
"root": "0x",
|
|
"status": "0x1",
|
|
"cumulativeGasUsed": "0x5208",
|
|
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
|
|
"logs": null,
|
|
"transactionHash": "0x0557bacce3375c98d806609b8d5043072f0b6a8bae45ae5a67a00d3a1a18d673",
|
|
"contractAddress": "0x0000000000000000000000000000000000000000",
|
|
"gasUsed": "0x5208",
|
|
"blockHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
|
|
"transactionIndex": "0x0"
|
|
}
|
|
],
|
|
"rejected": [
|
|
{
|
|
"index": 1,
|
|
"error": "nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
|
|
}
|
|
],
|
|
"currentDifficulty": "0x20000",
|
|
"gasUsed": "0x5208"
|
|
}
|
|
```
|
|
|
|
We can make them spit out the data to e.g. `stdout` like this:
|
|
```
|
|
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --output.result=stdout --output.alloc=stdout --state.fork=Berlin
|
|
```
|
|
Output:
|
|
```json
|
|
{
|
|
"alloc": {
|
|
"0x8a8eafb1cf62bfbeb1741769dae1a9dd47996192": {
|
|
"balance": "0xfeed1a9d",
|
|
"nonce": "0x1"
|
|
},
|
|
"0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
|
|
"balance": "0x5ffd4878be161d74",
|
|
"nonce": "0xac"
|
|
},
|
|
"0xc94f5374fce5edbc8e2a8697c15331677e6ebf0b": {
|
|
"balance": "0xa410"
|
|
}
|
|
},
|
|
"result": {
|
|
"stateRoot": "0x84208a19bc2b46ada7445180c1db162be5b39b9abc8c0a54b05d32943eae4e13",
|
|
"txRoot": "0xc4761fd7b87ff2364c7c60b6c5c8d02e522e815328aaea3f20e3b7b7ef52c42d",
|
|
"receiptsRoot": "0x056b23fbba480696b65fe5a59b8f2148a1299103c4f57df839233af2cf4ca2d2",
|
|
"logsHash": "0x1dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0a142fd40d49347",
|
|
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
|
|
"receipts": [
|
|
{
|
|
"root": "0x",
|
|
"status": "0x1",
|
|
"cumulativeGasUsed": "0x5208",
|
|
"logsBloom": "0x00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000",
|
|
"logs": null,
|
|
"transactionHash": "0x0557bacce3375c98d806609b8d5043072f0b6a8bae45ae5a67a00d3a1a18d673",
|
|
"contractAddress": "0x0000000000000000000000000000000000000000",
|
|
"gasUsed": "0x5208",
|
|
"blockHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
|
|
"transactionIndex": "0x0"
|
|
}
|
|
],
|
|
"rejected": [
|
|
{
|
|
"index": 1,
|
|
"error": "nonce too low: address 0x8A8eAFb1cf62BfBeb1741769DAE1a9dd47996192, tx: 0 state: 1"
|
|
}
|
|
],
|
|
"currentDifficulty": "0x20000",
|
|
"gasUsed": "0x5208"
|
|
}
|
|
}
|
|
```
|
|
|
|
#### About Ommers
|
|
|
|
Mining rewards and ommer rewards might need to be added. This is how those are applied:
|
|
|
|
- `block_reward` is the block mining reward for the miner (`0xaa`), of a block at height `N`.
|
|
- For each ommer (mined by `0xbb`), with blocknumber `N-delta`
|
|
- (where `delta` is the difference between the current block and the ommer)
|
|
- The account `0xbb` (ommer miner) is awarded `(8-delta)/ 8 * block_reward`
|
|
- The account `0xaa` (block miner) is awarded `block_reward / 32`
|
|
|
|
To make `t8n` apply these, the following inputs are required:
|
|
|
|
- `--state.reward`
|
|
- For ethash, it is `5000000000000000000` `wei`,
|
|
- If this is not defined, mining rewards are not applied,
|
|
- A value of `0` is valid, and causes accounts to be 'touched'.
|
|
- For each ommer, the tool needs to be given an `address\` and a `delta`. This
|
|
is done via the `ommers` field in `env`.
|
|
|
|
Note: the tool does not verify that e.g. the normal uncle rules apply,
|
|
and allows e.g two uncles at the same height, or the uncle-distance. This means that
|
|
the tool allows for negative uncle reward (distance > 8)
|
|
|
|
Example:
|
|
`./testdata/5/env.json`:
|
|
```json
|
|
{
|
|
"currentCoinbase": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
|
|
"currentDifficulty": "0x20000",
|
|
"currentGasLimit": "0x750a163df65e8a",
|
|
"currentNumber": "1",
|
|
"currentTimestamp": "1000",
|
|
"ommers": [
|
|
{"delta": 1, "address": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb" },
|
|
{"delta": 2, "address": "0xcccccccccccccccccccccccccccccccccccccccc" }
|
|
]
|
|
}
|
|
```
|
|
When applying this, using a reward of `0x08`
|
|
Output:
|
|
```json
|
|
{
|
|
"alloc": {
|
|
"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa": {
|
|
"balance": "0x88"
|
|
},
|
|
"0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb": {
|
|
"balance": "0x70"
|
|
},
|
|
"0xcccccccccccccccccccccccccccccccccccccccc": {
|
|
"balance": "0x60"
|
|
}
|
|
}
|
|
}
|
|
```
|
|
#### Future EIPS
|
|
|
|
It is also possible to experiment with future eips that are not yet defined in a hard fork.
|
|
Example, putting EIP-1344 into Frontier:
|
|
```
|
|
./evm t8n --state.fork=Frontier+1344 --input.pre=./testdata/1/pre.json --input.txs=./testdata/1/txs.json --input.env=/testdata/1/env.json
|
|
```
|
|
|
|
#### Block history
|
|
|
|
The `BLOCKHASH` opcode requires blockhashes to be provided by the caller, inside the `env`.
|
|
If a required blockhash is not provided, the exit code should be `4`:
|
|
Example where blockhashes are provided:
|
|
```
|
|
./evm t8n --input.alloc=./testdata/3/alloc.json --input.txs=./testdata/3/txs.json --input.env=./testdata/3/env.json --trace --state.fork=Berlin
|
|
|
|
```
|
|
|
|
```
|
|
cat trace-0-0x72fadbef39cd251a437eea619cfeda752271a5faaaa2147df012e112159ffb81.jsonl | grep BLOCKHASH -C2
|
|
```
|
|
```
|
|
{"pc":0,"op":96,"gas":"0x5f58ef8","gasCost":"0x3","memSize":0,"stack":[],"depth":1,"refund":0,"opName":"PUSH1"}
|
|
{"pc":2,"op":64,"gas":"0x5f58ef5","gasCost":"0x14","memSize":0,"stack":["0x1"],"depth":1,"refund":0,"opName":"BLOCKHASH"}
|
|
{"pc":3,"op":0,"gas":"0x5f58ee1","gasCost":"0x0","memSize":0,"stack":["0xdac58aa524e50956d0c0bae7f3f8bb9d35381365d07804dd5b48a5a297c06af4"],"depth":1,"refund":0,"opName":"STOP"}
|
|
{"output":"","gasUsed":"0x17"}
|
|
```
|
|
|
|
In this example, the caller has not provided the required blockhash:
|
|
```
|
|
./evm t8n --input.alloc=./testdata/4/alloc.json --input.txs=./testdata/4/txs.json --input.env=./testdata/4/env.json --trace --state.fork=Berlin
|
|
ERROR(4): getHash(3) invoked, blockhash for that block not provided
|
|
```
|
|
Error code: 4
|
|
|
|
#### Chaining
|
|
|
|
Another thing that can be done, is to chain invocations:
|
|
```
|
|
./evm t8n --input.alloc=./testdata/1/alloc.json --input.txs=./testdata/1/txs.json --input.env=./testdata/1/env.json --state.fork=Berlin --output.alloc=stdout | ./evm t8n --input.alloc=stdin --input.env=./testdata/1/env.json --input.txs=./testdata/1/txs.json --state.fork=Berlin
|
|
|
|
```
|
|
What happened here, is that we first applied two identical transactions, so the second one was rejected.
|
|
Then, taking the poststate alloc as the input for the next state, we tried again to include
|
|
the same two transactions: this time, both failed due to too low nonce.
|
|
|
|
In order to meaningfully chain invocations, one would need to provide meaningful new `env`, otherwise the
|
|
actual blocknumber (exposed to the EVM) would not increase.
|
|
|
|
#### Transactions in RLP form
|
|
|
|
It is possible to provide already-signed transactions as input to, using an `input.txs` which ends with the `rlp` suffix.
|
|
The input format for RLP-form transactions is _identical_ to the _output_ format for block bodies. Therefore, it's fully possible
|
|
to use the evm to go from `json` input to `rlp` input.
|
|
|
|
The following command takes **json** the transactions in `./testdata/13/txs.json` and signs them. After execution, they are output to `signed_txs.rlp`.:
|
|
```
|
|
./evm t8n --state.fork=London --input.alloc=./testdata/13/alloc.json --input.txs=./testdata/13/txs.json --input.env=./testdata/13/env.json --output.result=alloc_jsontx.json --output.body=signed_txs.rlp
|
|
INFO [12-27|09:25:11.102] Trie dumping started root=e4b924..6aef61
|
|
INFO [12-27|09:25:11.102] Trie dumping complete accounts=3 elapsed="275.66µs"
|
|
INFO [12-27|09:25:11.102] Wrote file file=alloc.json
|
|
INFO [12-27|09:25:11.103] Wrote file file=alloc_jsontx.json
|
|
INFO [12-27|09:25:11.103] Wrote file file=signed_txs.rlp
|
|
```
|
|
|
|
The `output.body` is the rlp-list of transactions, encoded in hex and placed in a string a'la `json` encoding rules:
|
|
```
|
|
cat signed_txs.rlp
|
|
"0xf8d2b86702f864010180820fa08284d09411111111111111111111111111111111111111118080c001a0b7dfab36232379bb3d1497a4f91c1966b1f932eae3ade107bf5d723b9cb474e0a06261c359a10f2132f126d250485b90cf20f30340801244a08ef6142ab33d1904b86702f864010280820fa08284d09411111111111111111111111111111111111111118080c080a0d4ec563b6568cd42d998fc4134b36933c6568d01533b5adf08769270243c6c7fa072bf7c21eac6bbeae5143371eef26d5e279637f3bd73482b55979d76d935b1e9"
|
|
```
|
|
|
|
We can use `rlpdump` to check what the contents are:
|
|
```
|
|
rlpdump -hex $(cat signed_txs.rlp | jq -r )
|
|
[
|
|
02f864010180820fa08284d09411111111111111111111111111111111111111118080c001a0b7dfab36232379bb3d1497a4f91c1966b1f932eae3ade107bf5d723b9cb474e0a06261c359a10f2132f126d250485b90cf20f30340801244a08ef6142ab33d1904,
|
|
02f864010280820fa08284d09411111111111111111111111111111111111111118080c080a0d4ec563b6568cd42d998fc4134b36933c6568d01533b5adf08769270243c6c7fa072bf7c21eac6bbeae5143371eef26d5e279637f3bd73482b55979d76d935b1e9,
|
|
]
|
|
```
|
|
Now, we can now use those (or any other already signed transactions), as input, like so:
|
|
```
|
|
./evm t8n --state.fork=London --input.alloc=./testdata/13/alloc.json --input.txs=./signed_txs.rlp --input.env=./testdata/13/env.json --output.result=alloc_rlptx.json
|
|
INFO [12-27|09:25:11.187] Trie dumping started root=e4b924..6aef61
|
|
INFO [12-27|09:25:11.187] Trie dumping complete accounts=3 elapsed="123.676µs"
|
|
INFO [12-27|09:25:11.187] Wrote file file=alloc.json
|
|
INFO [12-27|09:25:11.187] Wrote file file=alloc_rlptx.json
|
|
```
|
|
You might have noticed that the results from these two invocations were stored in two separate files.
|
|
And we can now finally check that they match.
|
|
```
|
|
cat alloc_jsontx.json | jq .stateRoot && cat alloc_rlptx.json | jq .stateRoot
|
|
"0xe4b924a6adb5959fccf769d5b7bb2f6359e26d1e76a2443c5a91a36d826aef61"
|
|
"0xe4b924a6adb5959fccf769d5b7bb2f6359e26d1e76a2443c5a91a36d826aef61"
|
|
```
|
|
|
|
## Transaction tool
|
|
|
|
The transaction tool is used to perform static validity checks on transactions such as:
|
|
* intrinsic gas calculation
|
|
* max values on integers
|
|
* fee semantics, such as `maxFeePerGas < maxPriorityFeePerGas`
|
|
* newer tx types on old forks
|
|
|
|
### Examples
|
|
|
|
```
|
|
./evm t9n --state.fork Homestead --input.txs testdata/15/signed_txs.rlp
|
|
[
|
|
{
|
|
"error": "transaction type not supported",
|
|
"hash": "0xa98a24882ea90916c6a86da650fbc6b14238e46f0af04a131ce92be897507476"
|
|
},
|
|
{
|
|
"error": "transaction type not supported",
|
|
"hash": "0x36bad80acce7040c45fd32764b5c2b2d2e6f778669fb41791f73f546d56e739a"
|
|
}
|
|
]
|
|
```
|
|
```
|
|
./evm t9n --state.fork London --input.txs testdata/15/signed_txs.rlp
|
|
[
|
|
{
|
|
"address": "0xd02d72e067e77158444ef2020ff2d325f929b363",
|
|
"hash": "0xa98a24882ea90916c6a86da650fbc6b14238e46f0af04a131ce92be897507476",
|
|
"intrinsicGas": "0x5208"
|
|
},
|
|
{
|
|
"address": "0xd02d72e067e77158444ef2020ff2d325f929b363",
|
|
"hash": "0x36bad80acce7040c45fd32764b5c2b2d2e6f778669fb41791f73f546d56e739a",
|
|
"intrinsicGas": "0x5208"
|
|
}
|
|
]
|
|
```
|
|
## Block builder tool (b11r)
|
|
|
|
The `evm b11r` tool is used to assemble and seal full block rlps.
|
|
|
|
### Specification
|
|
|
|
#### Command line params
|
|
|
|
Command line params that need to be supported are:
|
|
|
|
```
|
|
--input.header value `stdin` or file name of where to find the block header to use. (default: "header.json")
|
|
--input.ommers value `stdin` or file name of where to find the list of ommer header RLPs to use.
|
|
--input.txs value `stdin` or file name of where to find the transactions list in RLP form. (default: "txs.rlp")
|
|
--output.basedir value Specifies where output files are placed. Will be created if it does not exist.
|
|
--output.block value Determines where to put the alloc of the post-state. (default: "block.json")
|
|
<file> - into the file <file>
|
|
`stdout` - into the stdout output
|
|
`stderr` - into the stderr output
|
|
--seal.clique value Seal block with Clique. `stdin` or file name of where to find the Clique sealing data.
|
|
--seal.ethash Seal block with ethash. (default: false)
|
|
--seal.ethash.dir value Path to ethash DAG. If none exists, a new DAG will be generated.
|
|
--seal.ethash.mode value Defines the type and amount of PoW verification an ethash engine makes. (default: "normal")
|
|
--verbosity value Sets the verbosity level. (default: 3)
|
|
```
|
|
|
|
#### Objects
|
|
|
|
##### `header`
|
|
|
|
The `header` object is a consensus header.
|
|
|
|
```go=
|
|
type Header struct {
|
|
ParentHash common.Hash `json:"parentHash"`
|
|
OmmerHash *common.Hash `json:"sha3Uncles"`
|
|
Coinbase *common.Address `json:"miner"`
|
|
Root common.Hash `json:"stateRoot" gencodec:"required"`
|
|
TxHash *common.Hash `json:"transactionsRoot"`
|
|
ReceiptHash *common.Hash `json:"receiptsRoot"`
|
|
Bloom types.Bloom `json:"logsBloom"`
|
|
Difficulty *big.Int `json:"difficulty"`
|
|
Number *big.Int `json:"number" gencodec:"required"`
|
|
GasLimit uint64 `json:"gasLimit" gencodec:"required"`
|
|
GasUsed uint64 `json:"gasUsed"`
|
|
Time uint64 `json:"timestamp" gencodec:"required"`
|
|
Extra []byte `json:"extraData"`
|
|
MixDigest common.Hash `json:"mixHash"`
|
|
Nonce *types.BlockNonce `json:"nonce"`
|
|
BaseFee *big.Int `json:"baseFeePerGas"`
|
|
}
|
|
```
|
|
#### `ommers`
|
|
|
|
The `ommers` object is a list of RLP-encoded ommer blocks in hex
|
|
representation.
|
|
|
|
```go=
|
|
type Ommers []string
|
|
```
|
|
|
|
#### `txs`
|
|
|
|
The `txs` object is a list of RLP-encoded transactions in hex representation.
|
|
|
|
```go=
|
|
type Txs []string
|
|
```
|
|
|
|
#### `clique`
|
|
|
|
The `clique` object provides the necessary information to complete a clique
|
|
seal of the block.
|
|
|
|
```go=
|
|
var CliqueInfo struct {
|
|
Key *common.Hash `json:"secretKey"`
|
|
Voted *common.Address `json:"voted"`
|
|
Authorize *bool `json:"authorize"`
|
|
Vanity common.Hash `json:"vanity"`
|
|
}
|
|
```
|
|
|
|
#### `output`
|
|
|
|
The `output` object contains two values, the block RLP and the block hash.
|
|
|
|
```go=
|
|
type BlockInfo struct {
|
|
Rlp []byte `json:"rlp"`
|
|
Hash common.Hash `json:"hash"`
|
|
}
|
|
```
|
|
|
|
## A Note on Encoding
|
|
|
|
The encoding of values for `evm` utility attempts to be relatively flexible. It
|
|
generally supports hex-encoded or decimal-encoded numeric values, and
|
|
hex-encoded byte values (like `common.Address`, `common.Hash`, etc). When in
|
|
doubt, the [`execution-apis`](https://github.com/ethereum/execution-apis) way
|
|
of encoding should always be accepted.
|
|
|
|
## Testing
|
|
|
|
There are many test cases in the [`cmd/evm/testdata`](./testdata) directory.
|
|
These fixtures are used to power the `t8n` tests in
|
|
[`t8n_test.go`](./t8n_test.go). The best way to verify correctness of new `evm`
|
|
implementations is to execute these and verify the output and error codes match
|
|
the expected values.
|
|
|