You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
cloudreve/pkg/cluster/master.go

273 lines
6.3 KiB

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

package cluster
import (
"context"
"encoding/json"
model "github.com/cloudreve/Cloudreve/v3/models"
"github.com/cloudreve/Cloudreve/v3/pkg/aria2/common"
"github.com/cloudreve/Cloudreve/v3/pkg/aria2/rpc"
"github.com/cloudreve/Cloudreve/v3/pkg/auth"
"github.com/cloudreve/Cloudreve/v3/pkg/mq"
"github.com/cloudreve/Cloudreve/v3/pkg/serializer"
"github.com/cloudreve/Cloudreve/v3/pkg/util"
"github.com/gofrs/uuid"
"net/url"
"os"
"path/filepath"
"strconv"
"strings"
"sync"
"time"
)
const (
deleteTempFileDuration = 60 * time.Second
statusRetryDuration = 10 * time.Second
)
type MasterNode struct {
Model *model.Node
aria2RPC rpcService
lock sync.RWMutex
}
// RPCService 通过RPC服务的Aria2任务管理器
type rpcService struct {
Caller rpc.Client
Initialized bool
retryDuration time.Duration
deletePaddingDuration time.Duration
parent *MasterNode
options *clientOptions
}
type clientOptions struct {
Options map[string]interface{} // 创建下载时额外添加的设置
}
// Init 初始化节点
func (node *MasterNode) Init(nodeModel *model.Node) {
node.lock.Lock()
node.Model = nodeModel
node.aria2RPC.parent = node
node.aria2RPC.retryDuration = statusRetryDuration
node.aria2RPC.deletePaddingDuration = deleteTempFileDuration
node.lock.Unlock()
node.lock.RLock()
if node.Model.Aria2Enabled {
node.lock.RUnlock()
node.aria2RPC.Init()
return
}
node.lock.RUnlock()
}
func (node *MasterNode) ID() uint {
node.lock.RLock()
defer node.lock.RUnlock()
return node.Model.ID
}
func (node *MasterNode) Ping(req *serializer.NodePingReq) (*serializer.NodePingResp, error) {
return &serializer.NodePingResp{}, nil
}
// IsFeatureEnabled 查询节点的某项功能是否启用
func (node *MasterNode) IsFeatureEnabled(feature string) bool {
node.lock.RLock()
defer node.lock.RUnlock()
switch feature {
case "aria2":
return node.Model.Aria2Enabled
default:
return false
}
}
func (node *MasterNode) MasterAuthInstance() auth.Auth {
node.lock.RLock()
defer node.lock.RUnlock()
return auth.HMACAuth{SecretKey: []byte(node.Model.MasterKey)}
}
func (node *MasterNode) SlaveAuthInstance() auth.Auth {
node.lock.RLock()
defer node.lock.RUnlock()
return auth.HMACAuth{SecretKey: []byte(node.Model.SlaveKey)}
}
// SubscribeStatusChange 订阅节点状态更改
func (node *MasterNode) SubscribeStatusChange(callback func(isActive bool, id uint)) {
}
// IsActive 返回节点是否在线
func (node *MasterNode) IsActive() bool {
return true
}
// Kill 结束aria2请求
func (node *MasterNode) Kill() {
if node.aria2RPC.Caller != nil {
node.aria2RPC.Caller.Close()
}
}
// GetAria2Instance 获取主机Aria2实例
func (node *MasterNode) GetAria2Instance() common.Aria2 {
node.lock.RLock()
if !node.Model.Aria2Enabled {
node.lock.RUnlock()
return &common.DummyAria2{}
}
if !node.aria2RPC.Initialized {
node.lock.RUnlock()
node.aria2RPC.Init()
return &common.DummyAria2{}
}
defer node.lock.RUnlock()
return &node.aria2RPC
}
func (node *MasterNode) IsMater() bool {
return true
}
func (node *MasterNode) DBModel() *model.Node {
node.lock.RLock()
defer node.lock.RUnlock()
return node.Model
}
func (r *rpcService) Init() error {
r.parent.lock.Lock()
defer r.parent.lock.Unlock()
r.Initialized = false
// 客户端已存在,则关闭先前连接
if r.Caller != nil {
r.Caller.Close()
}
// 解析RPC服务地址
server, err := url.Parse(r.parent.Model.Aria2OptionsSerialized.Server)
if err != nil {
util.Log().Warning("无法解析主机 Aria2 RPC 服务地址,%s", err)
return err
}
server.Path = "/jsonrpc"
// 加载自定义下载配置
var globalOptions map[string]interface{}
if r.parent.Model.Aria2OptionsSerialized.Options != "" {
err = json.Unmarshal([]byte(r.parent.Model.Aria2OptionsSerialized.Options), &globalOptions)
if err != nil {
util.Log().Warning("无法解析主机 Aria2 配置,%s", err)
return err
}
}
r.options = &clientOptions{
Options: globalOptions,
}
timeout := r.parent.Model.Aria2OptionsSerialized.Timeout
caller, err := rpc.New(context.Background(), server.String(), r.parent.Model.Aria2OptionsSerialized.Token, time.Duration(timeout)*time.Second, mq.GlobalMQ)
r.Caller = caller
r.Initialized = err == nil
return err
}
func (r *rpcService) CreateTask(task *model.Download, groupOptions map[string]interface{}) (string, error) {
r.parent.lock.RLock()
// 生成存储路径
guid, _ := uuid.NewV4()
path := filepath.Join(
r.parent.Model.Aria2OptionsSerialized.TempPath,
"aria2",
guid.String(),
)
r.parent.lock.RUnlock()
// 创建下载任务
options := map[string]interface{}{
"dir": path,
}
for k, v := range r.options.Options {
options[k] = v
}
for k, v := range groupOptions {
options[k] = v
}
gid, err := r.Caller.AddURI(task.Source, options)
if err != nil || gid == "" {
return "", err
}
return gid, nil
}
func (r *rpcService) Status(task *model.Download) (rpc.StatusInfo, error) {
res, err := r.Caller.TellStatus(task.GID)
if err != nil {
// 失败后重试
util.Log().Debug("无法获取离线下载状态,%s稍后重试", err)
time.Sleep(r.retryDuration)
res, err = r.Caller.TellStatus(task.GID)
}
return res, err
}
func (r *rpcService) Cancel(task *model.Download) error {
// 取消下载任务
_, err := r.Caller.Remove(task.GID)
if err != nil {
util.Log().Warning("无法取消离线下载任务[%s], %s", task.GID, err)
}
return err
}
func (r *rpcService) Select(task *model.Download, files []int) error {
var selected = make([]string, len(files))
for i := 0; i < len(files); i++ {
selected[i] = strconv.Itoa(files[i])
}
_, err := r.Caller.ChangeOption(task.GID, map[string]interface{}{"select-file": strings.Join(selected, ",")})
return err
}
func (r *rpcService) GetConfig() model.Aria2Option {
r.parent.lock.RLock()
defer r.parent.lock.RUnlock()
return r.parent.Model.Aria2OptionsSerialized
}
func (s *rpcService) DeleteTempFile(task *model.Download) error {
s.parent.lock.RLock()
defer s.parent.lock.RUnlock()
// 避免被aria2占用异步执行删除
go func(d time.Duration, src string) {
time.Sleep(d)
err := os.RemoveAll(src)
if err != nil {
util.Log().Warning("无法删除离线下载临时目录[%s], %s", src, err)
}
}(s.deletePaddingDuration, task.Parent)
return nil
}