move member to its own package

gossip/member/member.go

@@ -0,0 +1,91 @@
+/*
+   Copyright 2018 Banco Bilbao Vizcaya Argentaria, n.A.
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+       http://www.apache.org/licenses/LICENSE-2.0
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+package member
+
+import (
+	"net"
+
+	"github.com/hashicorp/memberlist"
+)
+
+type Type int
+
+func (t Type) String() string {
+	switch t {
+	case Auditor:
+		return "auditor"
+	case Monitor:
+		return "monitor"
+	case Publisher:
+		return "publisher"
+	case Server:
+		return "server"
+	default:
+		return "unknown"
+	}
+}
+
+func ParseType(value string) Type {
+	switch value {
+	case "auditor":
+		return Auditor
+	case "monitor":
+		return Monitor
+	case "publisher":
+		return Publisher
+	default:
+		return Server
+	}
+}
+
+const (
+	Auditor Type = iota
+	Monitor
+	Publisher
+	Server
+	MaxType
+)
+
+// Member is a single member of the gossip cluster.
+type Peer struct {
+	Name   string
+	Addr   net.IP
+	Port   uint16
+	Meta   *Meta
+	Status Status
+}
+
+func (p Peer) Node() *memberlist.Node {
+	return &memberlist.Node{
+		Name: p.Name,
+		Addr: p.Addr,
+		Port: p.Port,
+	}
+}
+
+func NewPeer(name, addr string, port uint16, role Type) *Peer {
+	meta := &Meta{
+		Role: role,
+	}
+
+	return &Peer{
+		Name: name,
+		Addr: net.IP(addr),
+		Port: port,
+		Meta: meta,
+	}
+}
+
+func ParsePeer(node *memberlist.Node) *Peer {
+	return nil
+}

gossip/member/meta.go

@@ -0,0 +1,44 @@
+/*
+   Copyright 2018 Banco Bilbao Vizcaya Argentaria, n.A.
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+       http://www.apache.org/licenses/LICENSE-2.0
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+package member
+
+import (
+	"bytes"
+
+	"github.com/bbva/qed/log"
+	"github.com/hashicorp/go-msgpack/codec"
+)
+
+type Meta struct {
+	Role Type
+}
+
+func (a *Meta) Encode() ([]byte, error) {
+	var buf bytes.Buffer
+	encoder := codec.NewEncoder(&buf, &codec.MsgpackHandle{})
+	if err := encoder.Encode(a); err != nil {
+		log.Errorf("Failed to encode agent metadata: %v", err)
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+func (a *Meta) Decode(buf []byte) error {
+	reader := bytes.NewReader(buf)
+	decoder := codec.NewDecoder(reader, &codec.MsgpackHandle{})
+	if err := decoder.Decode(a); err != nil {
+		log.Errorf("Failed to decode agent metadata: %v", err)
+		return err
+	}
+	return nil
+}

gossip/member/status.go

@@ -0,0 +1,39 @@
+/*
+   Copyright 2018 Banco Bilbao Vizcaya Argentaria, n.A.
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+       http://www.apache.org/licenses/LICENSE-2.0
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+package member
+
+// Status is the state of the Agent instance.
+type Status int32
+
+const (
+	Alive Status = iota
+	Leaving
+	Left
+	Shutdown
+	Failed
+)
+
+func (s Status) String() string {
+	switch s {
+	case Alive:
+		return "alive"
+	case Leaving:
+		return "leaving"
+	case Left:
+		return "left"
+	case Shutdown:
+		return "shutdown"
+	default:
+		return "failed"
+	}
+}