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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| // Copyright (C) 2019, Xiongfa Li. | ||
| // All right reserved. | ||
| // @author xiongfa.li | ||
| // @version V1.0 | ||
| // Description: | ||
|
|
||
| package gossip | ||
|
|
||
| import ( | ||
| "github.com/hashicorp/memberlist" | ||
| "log" | ||
| "sync" | ||
| ) | ||
|
|
||
| type handle func(meta []byte) | ||
|
|
||
| type NodeDelegate struct { | ||
| mu sync.Mutex | ||
| Enabled bool | ||
| JoinFunc handle | ||
| LeaveFunc handle | ||
| UpdateFunc handle | ||
| } | ||
|
|
||
| func defaultJoin(meta []byte) { | ||
| log.Printf("defaultJoin meta: %s\n", string(meta)) | ||
| } | ||
|
|
||
| func defaultLeave(meta []byte) { | ||
| log.Printf("defaultLeave meta: %s\n", string(meta)) | ||
| } | ||
|
|
||
| func defaultUpdate(meta []byte) { | ||
| log.Printf("defaultUpdate meta: %s\n", string(meta)) | ||
| } | ||
|
|
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| func DefaultNodeDelegate() *NodeDelegate { | ||
| return &NodeDelegate{ | ||
| Enabled: true, | ||
| JoinFunc: defaultJoin, | ||
| LeaveFunc: defaultLeave, | ||
| UpdateFunc: defaultUpdate, | ||
| } | ||
| } | ||
|
|
||
| func (d *NodeDelegate) NotifyJoin(n *memberlist.Node) { | ||
| d.mu.Lock() | ||
| defer d.mu.Unlock() | ||
| if d.Enabled { | ||
| d.JoinFunc(n.Meta) | ||
| } | ||
| } | ||
|
|
||
| // NotifyLeave is invoked when a node is detected to have left. | ||
| // The Node argument must not be modified. | ||
| func (d *NodeDelegate) NotifyLeave(n *memberlist.Node) { | ||
| d.mu.Lock() | ||
| defer d.mu.Unlock() | ||
| if d.Enabled { | ||
| d.LeaveFunc(n.Meta) | ||
| } | ||
| } | ||
|
|
||
| // NotifyUpdate is invoked when a node is detected to have | ||
| // updated, usually involving the meta data. The Node argument | ||
| // must not be modified. | ||
| func (d *NodeDelegate) NotifyUpdate(n *memberlist.Node) { | ||
| d.mu.Lock() | ||
| defer d.mu.Unlock() | ||
| if d.Enabled { | ||
| d.UpdateFunc(n.Meta) | ||
| } | ||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| // Copyright (C) 2019, Xiongfa Li. | ||
| // All right reserved. | ||
| // @author xiongfa.li | ||
| // @version V1.0 | ||
| // Description: | ||
|
|
||
| package gossip | ||
|
|
||
| import ( | ||
| "gache/cluster" | ||
| "gache/config" | ||
| "github.com/hashicorp/memberlist" | ||
| "os" | ||
| "strconv" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| type members memberlist.Memberlist | ||
|
|
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| type Cluster interface { | ||
| LocalAddr() string | ||
| UpdateLocal(meta []byte) error | ||
| UpdateAndWait(meta []byte, timeout time.Duration) error | ||
| Close() error | ||
| } | ||
|
|
||
| func Startup(conf *config.Config, delegate *NodeDelegate) (Cluster, error) { | ||
| hostname, _ := os.Hostname() | ||
| config := memberlist.DefaultLocalConfig() | ||
| config.Name = hostname + "-" + strconv.Itoa(conf.ClusterPort) | ||
| // config := memberlist.DefaultLocalConfig() | ||
| config.BindPort = conf.ClusterPort | ||
| config.AdvertisePort = conf.ClusterPort | ||
| config.Events = delegate | ||
|
|
||
| list, err := memberlist.Create(config) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| _, _, sloterr := cluster.GetSlots(conf.ClusterSlot) | ||
| if sloterr != nil { | ||
| list.Shutdown() | ||
| return nil, sloterr | ||
| } | ||
|
|
||
| memList := strings.Split(conf.ClusterMemebers, ",") | ||
| var validMembers []string | ||
| for _, v := range memList { | ||
| mem := strings.TrimSpace(v) | ||
| if mem != "" { | ||
| validMembers = append(validMembers, mem) | ||
| } | ||
| } | ||
| if len(validMembers) > 0 { | ||
| list.Join(validMembers) | ||
| } | ||
|
|
||
| return (*members)(list), nil | ||
| } | ||
|
|
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| func (c *members)LocalAddr() string { | ||
| return (*memberlist.Memberlist)(c).LocalNode().Address() | ||
| } | ||
|
|
||
| func (c *members) UpdateLocal(meta []byte) error { | ||
| (*memberlist.Memberlist)(c).LocalNode().Meta = meta | ||
| return nil | ||
| } | ||
|
|
||
| func (c *members) UpdateAndWait(meta []byte, timeout time.Duration) error { | ||
| (*memberlist.Memberlist)(c).LocalNode().Meta = meta | ||
| return (*memberlist.Memberlist)(c).UpdateNode(timeout) | ||
| } | ||
|
|
||
| func (c *members) Close() error { | ||
| return (*memberlist.Memberlist)(c).Shutdown() | ||
| } |
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