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101 lines
2.3 KiB
101 lines
2.3 KiB
package nodes
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import (
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"fmt"
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"sync"
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"time"
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)
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// RPC 请求结构
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type RPCRequest struct {
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ServiceMethod string
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Args interface{}
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Reply interface{}
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Done chan error // 用于返回响应
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}
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// 线程版 Transport
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type ThreadTransport struct {
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mu sync.Mutex
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nodeChans map[string]chan RPCRequest // 每个节点的消息通道
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}
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// 线程版 dial的返回clientinterface
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type ThreadClient struct {
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targetId string
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}
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func (c *ThreadClient) Close() error {
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return nil
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}
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// 初始化线程通信系统
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func NewThreadTransport() *ThreadTransport {
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return &ThreadTransport{
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nodeChans: make(map[string]chan RPCRequest),
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}
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}
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// 注册一个新节点chan
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func (t *ThreadTransport) RegisterNodeChan(nodeId string, ch chan RPCRequest) {
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t.mu.Lock()
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defer t.mu.Unlock()
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t.nodeChans[nodeId] = ch
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}
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// 获取节点的 channel
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func (t *ThreadTransport) getNodeChan(nodeId string) (chan RPCRequest, bool) {
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t.mu.Lock()
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defer t.mu.Unlock()
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ch, ok := t.nodeChans[nodeId]
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return ch, ok
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}
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// 模拟 Dial 操作
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func (t *ThreadTransport) DialHTTPWithTimeout(network string, peerId string) (ClientInterface, error) {
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t.mu.Lock()
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defer t.mu.Unlock()
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if _, exists := t.nodeChans[peerId]; !exists {
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return nil, fmt.Errorf("节点 [%s] 不存在", peerId)
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}
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return &ThreadClient{targetId: peerId}, nil
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}
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// 模拟 Call 操作
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func (t *ThreadTransport) CallWithTimeout(client ClientInterface, serviceMethod string, args interface{}, reply interface{}) error {
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threadClient, ok := client.(*ThreadClient)
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if !ok {
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return fmt.Errorf("无效的客户端")
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}
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// 获取目标节点的 channel
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targetChan, exists := t.getNodeChan(threadClient.targetId)
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if !exists {
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return fmt.Errorf("目标节点 [%s] 不存在", threadClient.targetId)
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}
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// 创建响应通道（用于返回 RPC 结果）
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done := make(chan error, 1)
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// 发送请求
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request := RPCRequest{
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ServiceMethod: serviceMethod,
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Args: args,
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Reply: reply,
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Done: done,
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}
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select {
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case targetChan <- request:
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// 等待响应或超时
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select {
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case err := <-done:
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return err
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case <-time.After(100 * time.Millisecond):
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return fmt.Errorf("RPC 调用超时: %s", serviceMethod)
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}
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default:
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return fmt.Errorf("目标节点 [%s] 无法接收请求", threadClient.targetId)
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}
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}
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