Initial commit of stand alone consensus engine work.

eth/ethconfig/config.go

@@ -212,6 +212,12 @@ type Config struct {
 // CreateConsensusEngine creates a consensus engine for the given chain configuration.
 func CreateConsensusEngine(stack *node.Node, ethashConfig *ethash.Config, cliqueConfig *params.CliqueConfig, notify []string, noverify bool, db ethdb.Database) consensus.Engine {
 	// If proof-of-authority is requested, set it up
+	//begin PluGeth code injection
+	if engine := pluginGetEngine(stack, notify, noverify, db); engine != nil {
+		log.Debug("returning plugin consensus engine")
+		return engine
+	}
+	//end PluGeth code injection
 	var engine consensus.Engine
 	if cliqueConfig != nil {
 		engine = clique.New(cliqueConfig, db)

eth/ethconfig/plugin_hooks.go

@@ -0,0 +1,44 @@
+package ethconfig
+
+import (
+	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/plugins"
+	"github.com/ethereum/go-ethereum/plugins/wrappers"
+	wengine "github.com/ethereum/go-ethereum/plugins/wrappers/engine"
+	"github.com/ethereum/go-ethereum/plugins/wrappers/backendwrapper"
+	"github.com/openrelayxyz/plugeth-utils/core"
+	"github.com/openrelayxyz/plugeth-utils/restricted"
+
+	"github.com/ethereum/go-ethereum/consensus"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/node"
+
+	pconsensus "github.com/openrelayxyz/plugeth-utils/restricted/consensus"
+)
+
+
+
+func PluginGetEngine(pl *plugins.PluginLoader, stack *node.Node, notify []string, noverify bool, db ethdb.Database) consensus.Engine {
+	fnList := pl.Lookup("CreateEngine", func(item interface{}) bool {
+		_, ok := item.(func(core.Node, []string, bool, restricted.Database) pconsensus.Engine)
+		return ok
+	})
+	for _, fni := range fnList {
+		if fn, ok := fni.(func(core.Node, []string, bool, restricted.Database) pconsensus.Engine); ok { 
+			if engine := fn(wrappers.NewNode(stack), notify, noverify, backendwrapper.NewDB(db)); engine != nil {
+				wrappedEngine := wengine.NewWrappedEngine(engine)
+				return wrappedEngine
+			}
+			
+		}
+	}
+	return nil
+}
+
+func pluginGetEngine(stack *node.Node, notify []string, noverify bool, db ethdb.Database) consensus.Engine {
+	if plugins.DefaultPluginLoader == nil {
+		log.Warn("Attempting GetEngine, but default PluginLoader has not been initialized")
+		return nil
+	}
+	return PluginGetEngine(plugins.DefaultPluginLoader, stack, notify, noverify, db)
+}