Make version print nicely

License: MIT
Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>

api/api.go

@@ -2,6 +2,7 @@ package api
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/ipfs/go-cid"
 	"github.com/ipfs/go-filestore"
@@ -9,6 +10,7 @@ import (
 	"github.com/libp2p/go-libp2p-core/network"
 	"github.com/libp2p/go-libp2p-core/peer"
 
+	"github.com/filecoin-project/go-lotus/build"
 	"github.com/filecoin-project/go-lotus/chain/address"
 	"github.com/filecoin-project/go-lotus/chain/store"
 	"github.com/filecoin-project/go-lotus/chain/types"
@@ -173,6 +175,11 @@ type Version struct {
 	// TODO: git commit / os / genesis cid?
 }
 
+func (v Version) String() string {
+	vM, vm, vp := build.VersionInts(v.APIVersion)
+	return fmt.Sprintf("%s+api%d.%d.%d", v.Version, vM, vm, vp)
+}
+
 type Import struct {
 	Status   filestore.Status
 	Key      cid.Cid

build/version.go

@@ -19,3 +19,8 @@ const (
 	MinorMask = 0xffff00
 	PatchMask = 0xffffff
 )
+
+// VersionInts returns (major, minor, patch) versions
+func VersionInts(version uint32) (uint32, uint32, uint32) {
+	return (version & MajorMask) >> 16, (version & MinorMask) >> 8, version & PatchMask
+}

node/impl/common.go

@@ -85,7 +85,8 @@ func (a *CommonAPI) ID(context.Context) (peer.ID, error) {
 
 func (a *CommonAPI) Version(context.Context) (api.Version, error) {
 	return api.Version{
-		Version: build.Version,
+		Version:    build.Version,
+		APIVersion: build.APIVersion,
 	}, nil
 }