This branch is intended to allow the devnet to be used for testing
multiple consents types beyond the default clique. It is initially being
used to test Bor consensus for polygon.
It also has the following refactoring:
### 1. Network configuration
The two node arg building functions miningNodeArgs and nonMiningNodeArgs
have been replaced with a configuration struct which is used to
configure:
```go
network := &node.Network{
DataDir: dataDir,
Chain: networkname.DevChainName,
//Chain: networkname.BorDevnetChainName,
Logger: logger,
BasePrivateApiAddr: "localhost:9090",
BaseRPCAddr: "localhost:8545",
Nodes: []node.NetworkNode{
&node.Miner{},
&node.NonMiner{},
},
}
```
and start multiple nodes
```go
network.Start()
```
Network start will create a network of nodes ensuring that all nodes are
configured with non clashing network ports set via command line
arguments on start-up.
### 2. Request Routing
The `RequestRouter` has been updated to take a 'target' rather than
using a static dispatcher which routes to a single node on the network.
Each node in the network has its own request generator so command and
services have more flexibility in request routing and
`ExecuteAllMethods` currently takes the `node.Network` as an argument
and can pick which node (node 0 for the moment) to send requests to.
- stage_senders: don't re-calc existing senders
- stage_tx_lookup: prune less blocks per iteration - because
random-deletes are expensive. pruning must not slow-down sync.
- prune data even if --snap.stop is set
- "prune as-much-as-possible at startup" is not very good idea: at
initialCycle machine can be cold and prune will cause big downtime, no
reason to produce much freelist in 1 tx. People may also restart erigon
- because of some bug - and it will cause unexpected downtime (usually
Erigon startup very fast). So, I just remove all `initialSync`-related
logic in pruning.
- fix lost metrics about disk write byte/sec
it's step towards saving canonical and non-canonical bodies in same
table (and txs also in same own table). to reduce write amplification
(cheaper re-orgs)
PR change: reading BaseTxNum from existing snapshots instead of DB
DB will store in field body.BaseTxNum - non-canonical TxnID
Snapshots will store only canonical TxNum in field body.BaseTxNum
It fixing 1 case: when erigon start from scratch
- it did skip stage_snapshots because of race-condition and start
printing `Waiting for Consensus Layer...` logs for long time - but
actually Erigon just did download snapshots at this time and printed
wrong logs.
