Setup custom tendermint node

By exporting all of the commands, we allow users to setup their own
tendermint node cli. This enables users to provide a different
pivValidator without the need to fork tendermint.

cmd/tendermint/commands/run_node.go

@@ -5,16 +5,59 @@ import (
 
 	"github.com/spf13/cobra"
 
+	cmn "github.com/tendermint/tmlibs/common"
+
 	"github.com/tendermint/tendermint/node"
+	"github.com/tendermint/tendermint/proxy"
 	"github.com/tendermint/tendermint/types"
 )
 
+// RunNodeCmd creates and starts a tendermint node.
 var RunNodeCmd = &cobra.Command{
 	Use:   "node",
 	Short: "Run the tendermint node",
 	RunE:  runNode,
 }
 
+// NewRunNodeCmd creates and starts a tendermint node. It allows the user to
+// use a custom PrivValidator.
+func NewRunNodeCmd(privVal *types.PrivValidator) *cobra.Command {
+	return &cobra.Command{
+		Use:   "node",
+		Short: "Run the tendermint node",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			// Wait until the genesis doc becomes available
+			// This is for Mintnet compatibility.
+			// TODO: If Mintnet gets deprecated or genesis_file is
+			// always available, remove.
+			genDocFile := config.GenesisFile()
+			for !cmn.FileExists(genDocFile) {
+				logger.Info(cmn.Fmt("Waiting for genesis file %v...", genDocFile))
+				time.Sleep(time.Second)
+			}
+
+			genDoc, err := types.GenesisDocFromFile(genDocFile)
+			if err != nil {
+				return err
+			}
+			config.ChainID = genDoc.ChainID
+
+			// Create & start node
+			n := node.NewNode(config, privVal, proxy.DefaultClientCreator(config.ProxyApp, config.ABCI, config.DBDir()), logger)
+			if _, err := n.Start(); err != nil {
+				return fmt.Errorf("Failed to start node: %v", err)
+			} else {
+				logger.Info("Started node", "nodeInfo", n.Switch().NodeInfo())
+			}
+
+			// Trap signal, run forever.
+			n.RunForever()
+
+			return nil
+		},
+	}
+}
+
 func init() {
 	AddNodeFlags(RunNodeCmd)
 }