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base.go
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base.go
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package gzkwrapper
import (
"bytes"
"encoding/json"
"errors"
"runtime"
"strings"
"sync"
"time"
)
var (
ErrKeyInvalid = errors.New("key invalid.")
ErrArgsInvalid = errors.New("args invalid.")
ErrNodeIsNull = errors.New("node is nil.")
ErrNodeConnInvalid = errors.New("node conn invalid.")
)
type NodeType int
const (
NODE_SERVER NodeType = iota + 1 //服务节点
NODE_WORKER //工作节点
)
func (t NodeType) String() string {
switch t {
case NODE_SERVER:
return "NODE_SERVER"
case NODE_WORKER:
return "NODE_WORKER"
}
return ""
}
var buffer_pool = sync.Pool{
New: func() interface{} {
return bytes.NewBuffer(make([]byte, 0, 1<<10))
},
}
func encode(nodedata *NodeData) ([]byte, error) {
buffer := buffer_pool.Get().(*bytes.Buffer)
buffer.Reset()
defer buffer_pool.Put(buffer)
if err := json.NewEncoder(buffer).Encode(nodedata); err != nil {
return nil, err
}
return buffer.Bytes(), nil
}
func decode(b []byte) (*NodeData, error) {
if len(b) <= 0 {
return nil, errors.New("nodedata invalid.")
}
nodedata := &NodeData{}
if err := json.NewDecoder(bytes.NewReader(b)).Decode(nodedata); err != nil {
return nil, err
}
return nodedata, nil
}
type NodesPair map[string]*NodeData
type BaseNode struct {
NodeType `json:"type"` //节点类型
HostName string `json:"hostname"` //主机名称
}
type NodeData struct {
BaseNode
DataCenter string `json:"datacenter"` //数据中心名称(一般为调度服务器位置)
Location string `json:"location"` //节点分区位置
OS string `json:"os"` //节点系统
Platform string `json:"platform"` //节点平台
IpAddr string `json:"ipaddr"` //网络地址
APIAddr string `json:"apiaddr"` //节点API
ProcessId int `json:"pid"` //节点进程号
Singin bool `json:"singin"` //签到状态
Timestamp int64 `json:"timestamp"` //心跳时间戳
Alivestamp int64 `json:"alivestamp"` //存活时间戳,若发生改变则代表节点已重启
Attach []byte `json:"attach"` //附加数据
}
func NewNodeData(nodetype NodeType, hostname string, datacenter string, location string,
os string, platform string, ipaddr string, apiaddr string, processid int) *NodeData {
if os == "" {
os = runtime.GOOS
}
if platform == "" {
platform = runtime.GOARCH
}
addrSplit := strings.SplitN(apiaddr, ":", 2)
if addrSplit[0] == "" {
apiaddr = ipaddr + apiaddr
}
if ret := strings.HasPrefix(apiaddr, "http://"); !ret {
apiaddr = "http://" + apiaddr
}
return &NodeData{
BaseNode: BaseNode{
NodeType: nodetype,
HostName: hostname,
},
DataCenter: datacenter,
Location: location,
OS: os,
Platform: platform,
IpAddr: ipaddr,
APIAddr: apiaddr,
ProcessId: processid,
Singin: false,
Timestamp: 0,
Alivestamp: time.Now().Unix(),
Attach: nil,
}
}
type NodeMapper struct {
sync.RWMutex
keys []string
items map[string]*NodeData
}
func NewNodeMapper() *NodeMapper {
return &NodeMapper{
keys: make([]string, 0),
items: make(map[string]*NodeData),
}
}
func (mapper *NodeMapper) Count() int {
mapper.RLock()
defer mapper.RUnlock()
return len(mapper.items)
}
func (mapper *NodeMapper) GetKeys() []string {
mapper.RLock()
defer mapper.RUnlock()
return mapper.keys
}
func (mapper *NodeMapper) Contains(key string) bool {
mapper.RLock()
defer mapper.RUnlock()
for _, k := range mapper.keys {
if k == key {
return true
}
}
return false
}
func (mapper *NodeMapper) Get(key string) *NodeData {
mapper.RLock()
defer mapper.RUnlock()
if _, ret := mapper.items[key]; !ret {
return nil
}
return mapper.items[key]
}
func (mapper *NodeMapper) GetNodes(location string, ipaddr string, hostname string) NodesPair {
mapper.RLock()
defer mapper.RUnlock()
nodes := make(NodesPair)
ipaddr = strings.TrimSpace(ipaddr)
hostname = strings.TrimSpace(hostname)
for key, value := range mapper.items {
if value.Location == location {
if value.IpAddr == ipaddr || strings.ToUpper(value.HostName) == strings.ToUpper(hostname) {
nodes[key] = value
}
}
}
return nodes
}
func (mapper *NodeMapper) Copy(m map[string]*NodeData) {
if len(m) <= 0 {
return
}
mapper.Lock()
defer mapper.Unlock()
mapper.items = m
mapper.keys = mapper.keys[0:0]
for key := range mapper.items {
mapper.keys = append(mapper.keys, key)
}
}
func (mapper *NodeMapper) Append(key string, value *NodeData) int {
if value == nil {
return -1
}
mapper.Lock()
defer mapper.Unlock()
if _, ret := mapper.items[key]; !ret {
mapper.items[key] = value
mapper.keys = append(mapper.keys, key)
return 0
}
return -1
}
func (mapper *NodeMapper) Remove(key string) int {
mapper.Lock()
defer mapper.Unlock()
if _, ret := mapper.items[key]; ret {
delete(mapper.items, key)
for i, k := range mapper.keys {
if k == key {
mapper.keys = append(mapper.keys[:i], mapper.keys[i+1:]...)
break
}
}
return 0
}
return -1
}
func (mapper *NodeMapper) Set(key string, value *NodeData) int {
if value == nil {
return -1
}
mapper.Lock()
defer mapper.Unlock()
if _, ret := mapper.items[key]; ret {
mapper.items[key] = value
return 0
}
return -1
}
func (mapper *NodeMapper) Clear() {
mapper.Lock()
for key := range mapper.items {
delete(mapper.items, key)
}
mapper.keys = []string{}
mapper.Unlock()
}