plugeth/core/rawdb/plugin_hooks.go
2021-10-18 15:10:13 -05:00

114 lines
2.8 KiB
Go

package rawdb
import (
"github.com/ethereum/go-ethereum/plugins"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/rlp"
)
var (
freezerUpdates map[uint64]map[string]interface{}
)
func PluginTrackUpdate(num uint64, kind string, value interface{}) {
if freezerUpdates == nil { freezerUpdates = make(map[uint64]map[string]interface{}) }
update, ok := freezerUpdates[num]
if !ok {
update = make(map[string]interface{})
freezerUpdates[num] = update
}
update[kind] = value
}
func PluginResetUpdate(num uint64) {
delete(freezerUpdates, num)
}
func pluginCommitUpdate(num uint64) {
if plugins.DefaultPluginLoader == nil {
log.Warn("Attempting CommitUpdate, but default PluginLoader has not been initialized")
return
}
PluginCommitUpdate(plugins.DefaultPluginLoader, num)
}
func PluginCommitUpdate(pl *plugins.PluginLoader, num uint64) {
if freezerUpdates == nil { freezerUpdates = make(map[uint64]map[string]interface{}) }
defer func() { delete(freezerUpdates, num) }()
update, ok := freezerUpdates[num]
if !ok {
log.Warn("Attempting to commit untracked block", "num", num)
return
}
fnList := pl.Lookup("ModifyAncients", func(item interface{}) bool {
_, ok := item.(func(uint64, map[string]interface{}))
return ok
})
for _, fni := range fnList {
if fn, ok := fni.(func(uint64, map[string]interface{})); ok {
fn(num, update)
}
}
appendAncientFnList := pl.Lookup("AppendAncient", func(item interface{}) bool {
_, ok := item.(func(number uint64, hash, header, body, receipts, td []byte))
if ok { log.Warn("PlugEth's AppendAncient is deprecated. Please update to ModifyAncients.") }
return ok
})
if len(appendAncientFnList) > 0 {
var (
hash []byte
header []byte
body []byte
receipts []byte
td []byte
)
if hashi, ok := update[freezerHashTable]; ok {
switch v := hashi.(type) {
case []byte:
hash = v
default:
hash, _ = rlp.EncodeToBytes(v)
}
}
if headeri, ok := update[freezerHeaderTable]; ok {
switch v := headeri.(type) {
case []byte:
header = v
default:
header, _ = rlp.EncodeToBytes(v)
}
}
if bodyi, ok := update[freezerBodiesTable]; ok {
switch v := bodyi.(type) {
case []byte:
body = v
default:
body, _ = rlp.EncodeToBytes(v)
}
}
if receiptsi, ok := update[freezerReceiptTable]; ok {
switch v := receiptsi.(type) {
case []byte:
receipts = v
default:
receipts, _ = rlp.EncodeToBytes(v)
}
}
if tdi, ok := update[freezerDifficultyTable]; ok {
switch v := tdi.(type) {
case []byte:
td = v
default:
td, _ = rlp.EncodeToBytes(v)
}
}
for _, fni := range appendAncientFnList {
if fn, ok := fni.(func(number uint64, hash, header, body, receipts, td []byte)); ok {
fn(num, hash, header, body, receipts, td)
}
}
}
}