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node: refactor package node (#21105)

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This PR significantly changes the APIs for instantiating Ethereum nodes in
a Go program. The new APIs are not backwards-compatible, but we feel that
this is made up for by the much simpler way of registering services on
node.Node. You can find more information and rationale in the design
document: https://gist.github.com/renaynay/5bec2de19fde66f4d04c535fd24f0775.

There is also a new feature in Node's Go API: it is now possible to
register arbitrary handlers on the user-facing HTTP server. In geth, this
facility is used to enable GraphQL.

There is a single minor change relevant for geth users in this PR: The
GraphQL API is no longer available separately from the JSON-RPC HTTP
server. If you want GraphQL, you need to enable it using the
./geth --http --graphql flag combination.

The --graphql.port and --graphql.addr flags are no longer available.
This commit is contained in:
rene
2020-08-03 19:40:46 +02:00
committed by GitHub
parent b2b14e6ce3
commit c0c01612e9
63 changed files with 2606 additions and 2887 deletions
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26
les/commons.go
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@ -26,9 +26,12 @@ import (
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/les/checkpointoracle"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discv5"
"github.com/ethereum/go-ethereum/p2p/enode"
@ -145,3 +148,26 @@ func (c *lesCommons) localCheckpoint(index uint64) params.TrustedCheckpoint {
BloomRoot: light.GetBloomTrieRoot(c.chainDb, index, sectionHead),
}
}
// setupOracle sets up the checkpoint oracle contract client.
func (c *lesCommons) setupOracle(node *node.Node, genesis common.Hash, ethconfig *eth.Config) *checkpointoracle.CheckpointOracle {
config := ethconfig.CheckpointOracle
if config == nil {
// Try loading default config.
config = params.CheckpointOracles[genesis]
}
if config == nil {
log.Info("Checkpoint registrar is not enabled")
return nil
}
if config.Address == (common.Address{}) || uint64(len(config.Signers)) < config.Threshold {
log.Warn("Invalid checkpoint registrar config")
return nil
}
oracle := checkpointoracle.New(config, c.localCheckpoint)
rpcClient, _ := node.Attach()
client := ethclient.NewClient(rpcClient)
oracle.Start(client)
log.Info("Configured checkpoint registrar", "address", config.Address, "signers", len(config.Signers), "threshold", config.Threshold)
return oracle
}