Update raft to get hashicorp/raft#212 fix

vendor/github.com/hashicorp/raft/Makefile

@@ -4,7 +4,7 @@ test:
 	go test -timeout=60s ./...
 
 integ: test
-	INTEG_TESTS=yes go test -timeout=5s -run=Integ ./...
+	INTEG_TESTS=yes go test -timeout=25s -run=Integ ./...
 
 deps:
 	go get -d -v ./...

vendor/github.com/hashicorp/raft/api.go

@@ -979,10 +979,10 @@ func (r *Raft) Stats() map[string]string {
 	}
 
 	last := r.LastContact()
-	if last.IsZero() {
+	if r.getState() == Leader {
-		s["last_contact"] = "never"
-	} else if r.getState() == Leader {
 		s["last_contact"] = "0"
+	} else if last.IsZero() {
+		s["last_contact"] = "never"
 	} else {
 		s["last_contact"] = fmt.Sprintf("%v", time.Now().Sub(last))
 	}

vendor/github.com/hashicorp/raft/peersjson.go

@@ -44,3 +44,55 @@ func ReadPeersJSON(path string) (Configuration, error) {
 	}
 	return configuration, nil
 }
+
+// configEntry is used when decoding a new-style peers.json.
+type configEntry struct {
+	// ID is the ID of the server (a UUID, usually).
+	ID ServerID `json:"id"`
+
+	// Address is the host:port of the server.
+	Address ServerAddress `json:"address"`
+
+	// NonVoter controls the suffrage. We choose this sense so people
+	// can leave this out and get a Voter by default.
+	NonVoter bool `json:"non_voter"`
+}
+
+// ReadConfigJSON reads a new-style peers.json and returns a configuration
+// structure. This can be used to perform manual recovery when running protocol
+// versions that use server IDs.
+func ReadConfigJSON(path string) (Configuration, error) {
+	// Read in the file.
+	buf, err := ioutil.ReadFile(path)
+	if err != nil {
+		return Configuration{}, err
+	}
+
+	// Parse it as JSON.
+	var peers []configEntry
+	dec := json.NewDecoder(bytes.NewReader(buf))
+	if err := dec.Decode(&peers); err != nil {
+		return Configuration{}, err
+	}
+
+	// Map it into the new-style configuration structure.
+	var configuration Configuration
+	for _, peer := range peers {
+		suffrage := Voter
+		if peer.NonVoter {
+			suffrage = Nonvoter
+		}
+		server := Server{
+			Suffrage: suffrage,
+			ID:       peer.ID,
+			Address:  peer.Address,
+		}
+		configuration.Servers = append(configuration.Servers, server)
+	}
+
+	// We should only ingest valid configurations.
+	if err := checkConfiguration(configuration); err != nil {
+		return Configuration{}, err
+	}
+	return configuration, nil
+}

vendor/github.com/hashicorp/raft/raft.go

@@ -5,6 +5,7 @@ import (
 	"container/list"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"time"
 
 	"github.com/armon/go-metrics"
@@ -1238,6 +1239,7 @@ func (r *Raft) installSnapshot(rpc RPC, req *InstallSnapshotRequest) {
 	}
 	var rpcErr error
 	defer func() {
+		io.Copy(ioutil.Discard, rpc.Reader) // ensure we always consume all the snapshot data from the stream [see issue #212]
 		rpc.Respond(resp, rpcErr)
 	}()
 
@@ -1250,6 +1252,7 @@ func (r *Raft) installSnapshot(rpc RPC, req *InstallSnapshotRequest) {
 
 	// Ignore an older term
 	if req.Term < r.getCurrentTerm() {
+		r.logger.Printf("[INFO] raft: Ignoring installSnapshot request with older term of %d vs currentTerm %d", req.Term, r.getCurrentTerm())
 		return
 	}
 

vendor/vendor.json

@@ -845,10 +845,10 @@
 			"revision": "a14192a58a694c123d8fe5481d4a4727d6ae82f3"
 		},
 		{
-			"checksumSHA1": "wpirHJV/6VEbbD+HyAP2/6Xc0ek=",
+			"checksumSHA1": "bYn+HDmt7YLFvEV6DagMup8mkZE=",
 			"path": "github.com/hashicorp/raft",
-			"revision": "aaad9f10266e089bd401e7a6487651a69275641b",
+			"revision": "e5e581e04af7c46974b99195347cc0c380c0d841",
-			"revisionTime": "2016-11-10T00:52:40Z"
+			"revisionTime": "2017-06-09T23:09:26Z"
 		},
 		{
 			"checksumSHA1": "QAxukkv54/iIvLfsUP6IK4R0m/A=",