new logger and etcd fixes

cmd/haproxy-lb/main.go

@@ -15,14 +15,15 @@ import (
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/etcd"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/raft"
 	"github.com/go-logr/logr"
-	"k8s.io/klog/v2"
+	"github.com/iand/logfmtr"
-	"k8s.io/klog/v2/klogr"
 )
 
 var (
 	configFile string
 	version    string
-	log        logr.Logger
+
+	verbosity int
+	log       logr.Logger
 )
 
 func fatal(err error, msg string) {
@@ -31,10 +32,19 @@ func fatal(err error, msg string) {
 }
 
 func main() {
-	klog.InitFlags(nil)
+	logopts := logfmtr.DefaultOptions()
+	logopts.TimestampFormat = "2006-01-02T15:04:05.000Z-0700"
+	logopts.AddCaller = true
+	logopts.CallerSkip = 1
+	logfmtr.UseOptions(logopts)
+
+	flag.IntVar(&verbosity, "v", verbosity, "number for the log level verbosity")
 	flag.StringVar(&configFile, "config", "haproxy-lb.yaml", "haproxy-lb config file")
 	flag.Parse()
-	log = klogr.New().WithName("main")
+
+	logfmtr.SetVerbosity(verbosity)
+	log = logfmtr.New().WithName("main")
+
 	log.Info("starting haproxy-lb", "version", version)
 	cfg, err := config.ParseFile(configFile)
 	if err != nil {
@@ -44,19 +54,19 @@ func main() {
 	var c cluster.Cluster
 	if cfg.Cluster.Raft != nil {
 		log.Info("creating cluster", "mode", "raft")
-		c = raft.NewCluster(klogr.New().WithName("raft"))
+		c = raft.NewCluster(logfmtr.New().WithName("raft"))
 	} else if cfg.Cluster.Etcd != nil {
 		log.Info("creating cluster", "mode", "etcd")
-		c = etcd.NewCluster(klogr.New().WithName("etcd"))
+		c = etcd.NewCluster(logfmtr.New().WithName("etcd"))
 	}
 	log.Info("starting api server", "address", cfg.Server.Listen, "tls", cfg.Server.TLS != nil)
-	srv, err := api.NewServer(cfg, klogr.New().WithName("api"))
+	srv, err := api.NewServer(cfg, logfmtr.New().WithName("api"))
 	if err != nil {
 		fatal(err, "init failed")
 	}
 
 	log.Info("starting vip-controller")
-	callbacks, err := controller.NewLBController(cfg, srv, klogr.New().WithName("vip-controller"))
+	callbacks, err := controller.NewLBController(cfg, srv, logfmtr.New().WithName("vip-controller"))
 	if err != nil {
 		fatal(err, "init failed")
 	}
@@ -65,9 +75,17 @@ func main() {
 		fatal(err, "init failed")
 	}
 	go func() {
-		err = c.Start(cfg)
+		for {
-		if err != nil {
+			err = c.Start(cfg)
-			fatal(err, "init failed")
+			if err == cluster.ErrRestart {
+				log.Error(err, "recieved restart signal. restarting cluster controller.")
+				c.Reset()
+				time.Sleep(time.Second)
+				continue
+			}
+			if err != nil {
+				fatal(err, "init failed")
+			}
 		}
 	}()
 	go func() {

go.mod

@@ -6,28 +6,22 @@ require (
 	git.giftfish.de/ston1th/netalloc v0.0.0-20210926174801-c39acaee43a5
 	git.giftfish.de/ston1th/raftbbolt v0.0.0-20201114165203-b85c94bfc9b0
 	github.com/armon/go-metrics v0.3.6 // indirect
-	github.com/coreos/go-systemd/v22 v22.2.0 // indirect
 	github.com/fatih/color v1.10.0 // indirect
-	github.com/go-logr/logr v0.4.0
+	github.com/go-logr/logr v1.1.0
-	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/golang/protobuf v1.4.3 // indirect
 	github.com/gorilla/mux v1.8.0
 	github.com/hashicorp/go-hclog v0.15.0
 	github.com/hashicorp/go-immutable-radix v1.3.0 // indirect
+	github.com/hashicorp/go-uuid v1.0.1 // indirect
 	github.com/hashicorp/golang-lru v0.5.4 // indirect
 	github.com/hashicorp/raft v1.2.0
+	github.com/iand/logfmtr v0.2.1
 	github.com/mdlayher/arp v0.0.0-20191213142603-f72070a231fc
 	github.com/mdlayher/ethernet v0.0.0-20190606142754-0394541c37b7
 	github.com/vishvananda/netlink v1.1.0
 	github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f // indirect
-	go.etcd.io/etcd/client/v3 v3.5.0-alpha.0
+	go.etcd.io/etcd/client/v3 v3.5.0
-	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.17.0
-	go.uber.org/zap v1.16.0
+	golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b
-	golang.org/x/crypto v0.0.0-20210220033148-5ea612d1eb83
+	google.golang.org/protobuf v1.27.1 // indirect
-	golang.org/x/net v0.0.0-20210226172049-e18ecbb05110 // indirect
-	golang.org/x/sys v0.0.0-20210305230114-8fe3ee5dd75b // indirect
-	google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb // indirect
-	google.golang.org/grpc v1.36.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0
-	k8s.io/klog/v2 v2.6.0
 )

go.sum

@@ -1,14 +1,9 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-git.giftfish.de/ston1th/netalloc v0.0.0-20210926155347-8b15c38eab5e h1:i6/z8yhUwiAFgbRUjLb4FTylsLLo+LJpbmJ2dPjYZAE=
-git.giftfish.de/ston1th/netalloc v0.0.0-20210926155347-8b15c38eab5e/go.mod h1:ECRm6vIqNEDXBgJmKyXaBAWucdCzCVH5FG9Hfk6QX0E=
-git.giftfish.de/ston1th/netalloc v0.0.0-20210926173058-aac88a8fadf4 h1:yktjmcxmooXQgmt1B09b2ZSpd4QeGlbuqIKGrou+Mfo=
-git.giftfish.de/ston1th/netalloc v0.0.0-20210926173058-aac88a8fadf4/go.mod h1:ECRm6vIqNEDXBgJmKyXaBAWucdCzCVH5FG9Hfk6QX0E=
 git.giftfish.de/ston1th/netalloc v0.0.0-20210926174801-c39acaee43a5 h1:DQzBQS2lYd4FrHHvVnqIEEfKUEXfbj/NwAAq+vRC4dg=
 git.giftfish.de/ston1th/netalloc v0.0.0-20210926174801-c39acaee43a5/go.mod h1:ECRm6vIqNEDXBgJmKyXaBAWucdCzCVH5FG9Hfk6QX0E=
 git.giftfish.de/ston1th/raftbbolt v0.0.0-20201114165203-b85c94bfc9b0 h1:DU0PVdA2EHz2LFGEdkwgJopL9HQh5nFC9GJ7oqzZ300=
 git.giftfish.de/ston1th/raftbbolt v0.0.0-20201114165203-b85c94bfc9b0/go.mod h1:9dF/aHYkXts6/6oVyJ+vzXCn7NURDaoREaanX0aspx0=
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/DataDog/datadog-go v2.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
 github.com/DataDog/datadog-go v3.2.0+incompatible/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
@@ -20,6 +15,7 @@ github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuy
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878/go.mod h1:3AMJUQhVx52RsWOnlkpikZr01T/yAVN2gn0861vByNg=
@@ -44,11 +40,9 @@ github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGX
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/coreos/go-semver v0.3.0 h1:wkHLiw0WNATZnSG7epLsujiMCgPAc9xhjJ4tgnAxmfM=
 github.com/coreos/go-semver v0.3.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
-github.com/coreos/go-systemd/v22 v22.1.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+1atmu1JpKERPPk=
+github.com/coreos/go-systemd/v22 v22.3.2 h1:D9/bQk5vlXQFZ6Kwuu6zaiXJ9oTPe68++AzAJc1DzSI=
-github.com/coreos/go-systemd/v22 v22.2.0 h1:BBmbNtSc5PuUM3Byxs7yE5rLdxQO4/FMoEXY5Rle4GA=
+github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-github.com/coreos/go-systemd/v22 v22.2.0/go.mod h1:xO0FLkIi5MaZafQlIrOotqXZ90ih+1atmu1JpKERPPk=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -58,7 +52,7 @@ github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25Kn
 github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
 github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
+github.com/envoyproxy/go-control-plane v0.9.9-0.20210217033140-668b12f5399d/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fatih/color v1.10.0 h1:s36xzo75JdqLaaWoiEHk767eHiwo0598uUxyfiPkDsg=
@@ -68,10 +62,12 @@ github.com/globalsign/mgo v0.0.0-20180905125535-1ca0a4f7cbcb/go.mod h1:xkRDCp4j0
 github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8/go.mod h1:xkRDCp4j0OGD1HRkm4kmhM+pmpv3AKq5SU7GMg4oO/Q=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
+github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
-github.com/go-logr/logr v0.4.0 h1:K7/B1jt6fIBQVd4Owv2MqGQClcgf0R266+7C/QjRcLc=
+github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
-github.com/go-logr/logr v0.4.0/go.mod h1:z6/tIYblkpsD+a4lm/fGIIU9mZ+XfAiaFtq7xTgseGU=
+github.com/go-logr/logr v1.1.0 h1:nAbevmWlS2Ic4m4+/An5NXkaGqlqpbBgdcuThZxnZyI=
+github.com/go-logr/logr v1.1.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-openapi/analysis v0.0.0-20180825180245-b006789cd277/go.mod h1:k70tL6pCuVxPJOHXQ+wIac1FUrvNkHolPie/cLEU6hI=
 github.com/go-openapi/analysis v0.17.0/go.mod h1:IowGgpVeD0vNm45So8nr+IcQ3pxVtpRoBWb8PVZO0ik=
 github.com/go-openapi/analysis v0.18.0/go.mod h1:IowGgpVeD0vNm45So8nr+IcQ3pxVtpRoBWb8PVZO0ik=
@@ -181,9 +177,8 @@ github.com/gobuffalo/packd v0.1.0/go.mod h1:M2Juc+hhDXf/PnmBANFCqx4DM3wRbgDvnVWe
 github.com/gobuffalo/packr/v2 v2.0.9/go.mod h1:emmyGweYTm6Kdper+iywB6YK5YzuKchGtJQZ0Odn4pQ=
 github.com/gobuffalo/packr/v2 v2.2.0/go.mod h1:CaAwI0GPIAv+5wKLtv8Afwl+Cm78K/I/VCm/3ptBN+0=
 github.com/gobuffalo/syncx v0.0.0-20190224160051-33c29581e754/go.mod h1:HhnNqWY95UYwwW3uSASeV7vtgYkT2t16hJgV3AEPUpw=
-github.com/godbus/dbus/v5 v5.0.3/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
-github.com/gogo/protobuf v1.3.1/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
@@ -192,7 +187,6 @@ github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5y
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
-github.com/golang/protobuf v1.3.5/go.mod h1:6O5/vntMXwX2lRkT1hjjk0nAC1IDOTvTlVgjlRvqsdk=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
 github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
@@ -200,25 +194,28 @@ github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:W
 github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
 github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
+github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
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 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
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 github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
 github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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@@ -230,22 +227,29 @@ github.com/hashicorp/go-msgpack v0.5.5/go.mod h1:ahLV/dePpqEmjfWmKiqvPkv/twdG7iP
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@@ -254,6 +258,7 @@ github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+o
 github.com/klauspost/compress v1.9.5/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
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 github.com/konsorten/go-windows-terminal-sequences v1.0.2/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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@@ -298,6 +303,7 @@ github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lN
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@@ -318,7 +324,8 @@ github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXP
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-github.com/prometheus/client_golang v1.5.1/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
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@@ -326,10 +333,14 @@ github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6T
 github.com/prometheus/common v0.0.0-20181126121408-4724e9255275/go.mod h1:daVV7qP5qjZbuso7PdcryaAu0sAZbrN9i7WWcTMWvro=
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@@ -339,9 +350,9 @@ github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPx
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@@ -368,14 +379,15 @@ github.com/xdg/stringprep v0.0.0-20180714160509-73f8eece6fdc/go.mod h1:Jhud4/sHM
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-go.etcd.io/etcd/api/v3 v3.5.0-alpha.0 h1:+e5nrluATIy3GP53znpkHMFzPTHGYyzvJGFCbuI6ZLc=
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-go.etcd.io/etcd/client/v3 v3.5.0-alpha.0 h1:dr1EOILak2pu4Nf5XbRIOCNIBjcz6UmkQd7hHRXwxaM=
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-go.etcd.io/etcd/client/v3 v3.5.0-alpha.0/go.mod h1:wKt7jgDgf/OfKiYmCq5WFGxOFAkVMLxiiXgLDFhECr8=
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-go.etcd.io/etcd/pkg/v3 v3.5.0-alpha.0 h1:3yLUEC0nFCxw/RArImOyRUI4OAFbg4PFpBbAhSNzKNY=
+go.etcd.io/etcd/client/v3 v3.5.0 h1:62Eh0XOro+rDwkrypAGDfgmNh5Joq+z+W9HZdlXMzek=
-go.etcd.io/etcd/pkg/v3 v3.5.0-alpha.0/go.mod h1:tV31atvwzcybuqejDoY3oaNRTtlD2l/Ot78Pc9w7DMY=
+go.etcd.io/etcd/client/v3 v3.5.0/go.mod h1:AIKXXVX/DQXtfTEqBryiLTUXwON+GuvO6Z7lLS/oTh0=
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@@ -384,38 +396,33 @@ go.mongodb.org/mongo-driver v1.4.3/go.mod h1:WcMNYLx/IlOxLe6JRJiv2uXuCz6zBLndR4S
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-go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
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-go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
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-go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
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@@ -432,18 +439,21 @@ golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR
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@@ -453,6 +463,8 @@ golang.org/x/sync v0.0.0-20190412183630-56d357773e84/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -471,19 +483,23 @@ golang.org/x/sys v0.0.0-20190606122018-79a91cf218c4/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -505,13 +521,11 @@ golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBn
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@@ -523,16 +537,15 @@ google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoA
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-google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb h1:hcskBH5qZCOa7WpTUFUFvoebnSFZBYpjykLtjIp9DVk=
+google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c h1:wtujag7C+4D6KMoulW9YauvK2lgdvCMS260jsqqBXr0=
-google.golang.org/genproto v0.0.0-20210303154014-9728d6b83eeb/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
+google.golang.org/genproto v0.0.0-20210602131652-f16073e35f0c/go.mod h1:UODoCrxHCcBojKKwX1terBiRUaqAsFqJiF615XL43r0=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
 google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
+google.golang.org/grpc v1.33.1/go.mod h1:fr5YgcSWrqhRRxogOsw7RzIpsmvOZ6IcH4kBYTpR3n0=
-google.golang.org/grpc v1.32.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
+google.golang.org/grpc v1.38.0 h1:/9BgsAsa5nWe26HqOlvlgJnqBuktYOLCgjCPqsa56W0=
-google.golang.org/grpc v1.36.0 h1:o1bcQ6imQMIOpdrO3SWf2z5RV72WbDwdXuK0MDlc8As=
+google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
-google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
@@ -541,9 +554,11 @@ google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzi
 google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
-google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
+google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
+google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
+google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
@@ -567,8 +582,4 @@ gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
-honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
-k8s.io/klog/v2 v2.6.0 h1:c1wFxejFMBkp/VxCdc6kYdgrBkC2gzmcl6afuJAkJyU=
-k8s.io/klog/v2 v2.6.0/go.mod h1:hy9LJ/NvuK+iVyP4Ehqva4HxZG/oXyIS3n3Jmire4Ec=
 sigs.k8s.io/yaml v1.2.0/go.mod h1:yfXDCHCao9+ENCvLSE62v9VSji2MKu5jeNfTrofGhJc=

pkg/cluster/cluster.go

@@ -12,6 +12,7 @@ var (
 	ErrNotLeader      = errors.New("not leader")
 	ErrKeyNotFound    = errors.New("key not found")
 	ErrPrefixNotFound = errors.New("prefix not found")
+	ErrRestart        = errors.New("restart")
 )
 
 type Cluster interface {
@@ -19,6 +20,7 @@ type Cluster interface {
 	SetCallbacks(Callbacks) error
 	Stepdown()
 	Stop()
+	Reset()
 }
 
 type KV interface {
@@ -29,8 +31,8 @@ type KV interface {
 }
 
 type CallbackContext interface {
-	logr.Logger
 	KV
+	Logger() logr.Logger
 	ID() string
 	Fatal(error)
 }

pkg/controller/loadbalancer.go

@@ -27,16 +27,17 @@ func NewLBController(cfg *config.Config, srv *api.Server, log logr.Logger) (call
 	callbacks = cluster.Callbacks{
 		Leader: func(ctx context.Context, cc cluster.CallbackContext) {
 			db := db.New(cc)
-			cc.V(2).Info("starting haproxy", "service", cfg.HAProxyService)
+			log := cc.Logger()
+			log.Info("starting haproxy", "service", cfg.HAProxyService)
 			err := ha.Start(ctx)
 			if err != nil {
-				cc.Error(err, "error starting haproxy")
+				log.Error(err, "error starting haproxy")
 				cc.Fatal(err)
 				return
 			}
 			err = srv.UpdateDB(db)
 			if err != nil {
-				cc.Error(err, "error initialising api server as leader")
+				log.Error(err, "error initialising api server as leader")
 				cc.Fatal(err)
 				return
 			}
@@ -45,56 +46,61 @@ func NewLBController(cfg *config.Config, srv *api.Server, log logr.Logger) (call
 				go func() {
 					err := exec.CommandContext(ctx, cfg.LeaderHook).Run()
 					if err != nil {
-						cc.Error(err, "error running hook", "leaderHook", cfg.LeaderHook)
+						log.Error(err, "error running hook", "leaderHook", cfg.LeaderHook)
 					}
 				}()
 			}
 			for {
-				cc.Info("leading", "id", cc.ID())
+				if ctx.Err() == context.Canceled {
+					t.Stop()
+					log.Info("leading canceled", "id", cc.ID())
+					return
+				}
+				log.Info("leading", "id", cc.ID())
 				ips, err := db.GetDeletedIPs()
 				if err != nil && err != cluster.ErrPrefixNotFound {
-					cc.Error(err, "error reading deleted ips list")
+					log.Error(err, "error reading deleted ips list")
 					<-t.C
 					continue
 				}
-				deleteIPs(cc, n, ips)
+				deleteIPs(log, n, ips)
 
 				ips, err = db.GetIPs()
 				if err != nil && err != cluster.ErrPrefixNotFound {
-					cc.Error(err, "error reading ips list")
+					log.Error(err, "error reading ips list")
 					<-t.C
 					continue
 				}
-				addIPs(cc, n, ips)
+				addIPs(log, n, ips)
 
 				lbs, err := db.GetLBs("")
 				if err != nil && err != cluster.ErrPrefixNotFound {
-					cc.Error(err, "error reading lb list")
+					log.Error(err, "error reading lb list")
 					<-t.C
 					continue
 				}
 				lbcfg, err := haproxy.NewConfig(lbs)
 				if err != nil {
-					cc.Error(err, "error reading haproxy config")
+					log.Error(err, "error reading haproxy config")
 					<-t.C
 					continue
 				}
 				err = ha.UpdateConfig(ctx, lbcfg)
 				if err != nil {
-					cc.Error(err, "error updating haproxy config")
+					log.Error(err, "error updating haproxy config")
 					<-t.C
 					continue
 				}
 				select {
 				case <-ctx.Done():
 					t.Stop()
-					deleteIPs(cc, n, ips)
+					deleteIPs(log, n, ips)
-					cc.V(2).Info("stopping haproxy", "service", cfg.HAProxyService)
+					log.Info("stopping haproxy", "service", cfg.HAProxyService)
 					err = ha.Stop(context.Background())
 					if err != nil {
-						cc.Error(err, "error stopping haproxy")
+						log.Error(err, "error stopping haproxy")
 					}
-					cc.Info("leading canceled", "id", cc.ID())
+					log.Info("leading canceled", "id", cc.ID())
 					return
 				case <-t.C:
 				}
@@ -102,9 +108,10 @@ func NewLBController(cfg *config.Config, srv *api.Server, log logr.Logger) (call
 		},
 		Follower: func(ctx context.Context, cc cluster.CallbackContext) {
 			db := db.New(cc)
+			log := cc.Logger()
 			err := srv.UpdateDB(db)
 			if err != nil {
-				cc.Error(err, "error initialising api server as follower")
+				log.Error(err, "error initialising api server as follower")
 				cc.Fatal(err)
 				return
 			}
@@ -113,23 +120,28 @@ func NewLBController(cfg *config.Config, srv *api.Server, log logr.Logger) (call
 				go func() {
 					err := exec.CommandContext(ctx, cfg.FollowerHook).Run()
 					if err != nil {
-						cc.Error(err, "error running hook", "followerHook", cfg.FollowerHook)
+						log.Error(err, "error running hook", "followerHook", cfg.FollowerHook)
 					}
 				}()
 			}
 			for {
-				cc.Info("following", "id", cc.ID())
+				if ctx.Err() == context.Canceled {
+					t.Stop()
+					log.Info("following canceled", "id", cc.ID())
+					return
+				}
+				log.Info("following", "id", cc.ID())
 				select {
 				case <-ctx.Done():
 					t.Stop()
-					cc.Info("following canceled", "id", cc.ID())
+					log.Info("following canceled", "id", cc.ID())
 					return
 				case <-t.C:
 				}
 			}
 		},
 		Cleanup: func(ctx context.Context, cc cluster.CallbackContext) {
-			deleteIPs(cc, n, n.GetIPs())
+			deleteIPs(log, n, n.GetIPs())
 		},
 	}
 	return

pkg/db/db.go

@@ -1,7 +1,9 @@
 package db
 
 import (
+	"errors"
 	"sync"
+	"time"
 
 	schemav1 "git.giftfish.de/ston1th/haproxy-lb/pkg/api/v1/schema"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/cluster"
@@ -34,17 +36,37 @@ func (db *DB) GetIPs() (ips []string, err error) {
 	return
 }
 func (db *DB) GetDeletedIPs() (ips []string, err error) {
-	m, err := db.kv.GetPrefix(delPrefix)
+	err = timeout(func() error {
-	if err != nil {
+		m, err := db.kv.GetPrefix(delPrefix)
-		return
+		if err != nil {
-	}
+			return err
-	for k := range m {
+		}
-		ips = append(ips, k)
+		for k := range m {
-		db.kv.Delete(delPrefix + k)
+			ips = append(ips, k)
-	}
+			db.kv.Delete(delPrefix + k)
+		}
+		return nil
+	})
 	return
 }
 
+func timeout(f func() error) error {
+	return timeoutWithDuration(f, time.Second*3)
+}
+func timeoutWithDuration(f func() error, d time.Duration) error {
+	c := make(chan error, 1)
+	go func() {
+		e := f()
+		c <- e
+	}()
+	select {
+	case err := <-c:
+		return err
+	case <-time.After(d):
+		return errors.New("timeout")
+	}
+}
+
 func (db *DB) GetCIDR(name string) (cidr string, err error) {
 	b, err := db.GetLB(name)
 	if err != nil {

pkg/etcd/cluster.go

@@ -11,7 +11,7 @@ import (
 )
 
 type Cluster struct {
-	logr.Logger
+	log logr.Logger
 	cli *clientv3.Client
 	ctx context.Context
 
@@ -24,18 +24,23 @@ type Cluster struct {
 	id            string
 	keyID         string
 	session       bool
-	cancelSession func()
+	sessionCancel func()
 	fatal         error
 }
 
 func NewCluster(log logr.Logger) cluster.Cluster {
-	return &Cluster{
+	c := &Cluster{log: log}
-		Logger:   log,
+	c.Reset()
-		ctx:      context.Background(),
+	return c
-		stepdown: make(chan struct{}, 1),
+}
-		stop:     make(chan struct{}, 1),
+
-		done:     make(chan struct{}, 1),
+func (c *Cluster) Reset() {
-	}
+	c.ctx = context.Background()
+	c.stepdown = make(chan struct{}, 1)
+	c.stop = make(chan struct{}, 1)
+	c.done = make(chan struct{}, 1)
+	c.session = false
+	c.fatal = nil
 }
 
 func (c *Cluster) Get(k string) (v []byte, err error) {
@@ -83,6 +88,10 @@ func (c *Cluster) SetCallbacks(callbacks cluster.Callbacks) error {
 	return c.checkConfig()
 }
 
+func (c *Cluster) Logger() logr.Logger {
+	return c.log
+}
+
 func (c *Cluster) ID() string {
 	return c.id
 }

pkg/etcd/etcd.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"time"
 
+	"git.giftfish.de/ston1th/haproxy-lb/pkg/cluster"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/config"
 	"git.giftfish.de/ston1th/haproxy-lb/pkg/util"
 	clientv3 "go.etcd.io/etcd/client/v3"
@@ -60,10 +61,12 @@ func (c *Cluster) Start(etcdcfg *config.Config) error {
 		return err
 	}
 
-	ctxSsession, cancelSession := context.WithCancel(context.Background())
+	log := c.Logger()
-	c.cancelSession = cancelSession
+	log.Info("waiting for etcd")
+	sessionCtx, sessionCancel := context.WithCancel(context.Background())
+	c.sessionCancel = sessionCancel
 	s, err := concurrency.NewSession(c.cli,
-		concurrency.WithContext(ctxSsession),
+		concurrency.WithContext(sessionCtx),
 		concurrency.WithTTL(10),
 	)
 	if err != nil {
@@ -78,32 +81,33 @@ func (c *Cluster) Start(etcdcfg *config.Config) error {
 	c.keyID = ePrefix + "/" + c.id
 
 	e := concurrency.NewElection(s, ePrefix)
-	ctxCampaign, cancelCampaign := context.WithCancel(context.Background())
+	campaignCtx, campaignCancel := context.WithCancel(context.Background())
 	go func() {
 		errc := make(chan error, 1)
 		for {
 			go func() {
-				errc <- e.Campaign(ctxCampaign, "")
+				errc <- e.Campaign(campaignCtx, "")
 			}()
 			select {
 			case err := <-errc:
 				if err != nil {
-					time.Sleep(time.Second)
+					log.Error(err, "campaign error")
+					c.Fatal(cluster.ErrRestart)
 				}
-			case <-ctxCampaign.Done():
+			case <-campaignCtx.Done():
 				return
 			}
 		}
 	}()
 
-	t := time.NewTicker(time.Second)
+	t := time.NewTicker(time.Second * 2)
 	ctx, cancel := context.WithCancel(context.Background())
-	ctxObserve, cancelObserve := context.WithCancel(context.Background())
+	observeCtx, observeCancel := context.WithCancel(context.Background())
 	leading := false
 	following := false
-	leaderChan := c.observe(ctxObserve, e.Observe(ctxObserve))
+	leaderChan := c.observe(observeCtx, e.Observe(observeCtx))
 	for {
-		if !leading && c.leaderID(e.Leader(ctxObserve)) == c.keyID {
+		if !leading && c.leaderID(e.Leader(observeCtx)) == c.keyID {
 			leading = true
 			go c.leader(ctx)
 		} else if !following && !leading {
@@ -138,20 +142,19 @@ func (c *Cluster) Start(etcdcfg *config.Config) error {
 		case <-c.stepdown:
 			cancel()
 			ctx, cancel = context.WithCancel(context.Background())
-			ctxResign, _ := context.WithTimeout(context.Background(), time.Second*2)
+			resignCtx, _ := context.WithTimeout(context.Background(), time.Second*2)
-			e.Resign(ctxResign)
+			e.Resign(resignCtx)
 		case <-c.stop:
 			t.Stop()
 			cancel()
-			cancelObserve()
+			observeCancel()
-			cancelCampaign()
+			campaignCancel()
 			if leading {
 				ctx, _ := context.WithTimeout(context.Background(), time.Second*2)
 				e.Resign(ctx)
 			}
 			if c.callbacks.Cleanup != nil {
-				ctx, _ := context.WithTimeout(context.Background(), time.Second*2)
+				c.callbacks.Cleanup(context.Background(), c)
-				c.callbacks.Cleanup(ctx, c)
 			}
 			s.Close()
 			close(c.done)
@@ -204,9 +207,10 @@ func (c *Cluster) Fatal(err error) {
 
 func (c *Cluster) Stop() {
 	if !c.session {
-		c.cancelSession()
+		c.sessionCancel()
 		return
 	}
+	c.stop <- struct{}{}
 	close(c.stop)
 	<-c.done
 	c.cli.Close()

pkg/raft/cluster.go

@@ -9,9 +9,9 @@ import (
 )
 
 type Cluster struct {
-	logr.Logger
 	cluster.KV
-	r *raft.Raft
+	log logr.Logger
+	r   *raft.Raft
 
 	kvm       *kv
 	stepdown  chan struct{}
@@ -24,17 +24,25 @@ type Cluster struct {
 }
 
 func NewCluster(log logr.Logger) cluster.Cluster {
+	c := &Cluster{log: log}
+	c.Reset()
+	return c
+}
+
+func (c *Cluster) Reset() {
 	kvm := &kv{
 		m: make(map[string][]byte),
 	}
-	return &Cluster{
+	c.KV = kvm
-		Logger:   log,
+	c.kvm = kvm
-		KV:       kvm,
+	c.stepdown = make(chan struct{}, 1)
-		kvm:      kvm,
+	c.stop = make(chan struct{}, 1)
-		stepdown: make(chan struct{}, 1),
+	c.done = make(chan struct{}, 1)
-		stop:     make(chan struct{}, 1),
+	c.fatal = nil
-		done:     make(chan struct{}, 1),
+}
-	}
+
+func (c *Cluster) Logger() logr.Logger {
+	return c.log
 }
 
 func (c *Cluster) ID() string {

pkg/raft/raft.go

@@ -21,6 +21,7 @@ func (c *Cluster) Start(raftcfg *config.Config) error {
 	if err != nil {
 		return err
 	}
+	log := c.Logger()
 	cfg := raftcfg.Cluster.Raft
 	hcl := hclog.New(&hclog.LoggerOptions{
 		Name:       "raft",
@@ -39,14 +40,14 @@ func (c *Cluster) Start(raftcfg *config.Config) error {
 	timeout := 10 * time.Second
 	var transport *raft.NetworkTransport
 	if cfg.TLS != nil {
-		c.V(1).Info("setup", "transport", "tls")
+		log.V(1).Info("setup", "transport", "tls")
 		s, err := tls.NewStream(cfg)
 		if err != nil {
 			return err
 		}
 		transport = raft.NewNetworkTransportWithLogger(s, pool, timeout, hcl)
 	} else {
-		c.V(1).Info("setup", "transport", "tcp")
+		log.V(1).Info("setup", "transport", "tcp")
 		address, err := net.ResolveTCPAddr("tcp", cfg.Address)
 		if err != nil {
 			return err

pkg/util/crash.go

@@ -1,13 +1,19 @@
 package util
 
 import (
+	"errors"
+	"fmt"
 	"net/http"
 	"runtime"
 
-	"k8s.io/klog/v2"
+	"github.com/iand/logfmtr"
 )
 
-var reallyCrash = true
+var (
+	reallyCrash = true
+	log         = logfmtr.New()
+	panicErr    = errors.New("observed a panic")
+)
 
 func HandleCrash() {
 	if r := recover(); r != nil {
@@ -34,8 +40,8 @@ func logPanic(r interface{}) {
 	stacktrace := make([]byte, size)
 	stacktrace = stacktrace[:runtime.Stack(stacktrace, false)]
 	if _, ok := r.(string); ok {
-		klog.Errorf("Observed a panic: %s\n%s", r, stacktrace)
+		log.Error(panicErr, fmt.Sprintf("%s\n%s", r, stacktrace))
 	} else {
-		klog.Errorf("Observed a panic: %#v (%v)\n%s", r, r, stacktrace)
+		log.Error(panicErr, fmt.Sprintf("%#v (%v)\n%s", r, r, stacktrace))
 	}
 }