0ec1d3b87d
- go.yandata.net/iod/iod/go-trustlog → go.yandata.net/wangsiyuan/go-trustlog - 更新 go.mod module声明 - 更新 README.md 安装说明 - 批量更新所有 .go 文件中的 import 路径 - 61个文件受影响 这样go-trustlog可以作为独立SDK使用
442 lines
12 KiB
Go
442 lines
12 KiB
Go
package queryclient
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import (
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"context"
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"errors"
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"fmt"
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"io"
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"time"
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"google.golang.org/grpc"
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"google.golang.org/protobuf/types/known/timestamppb"
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"go.yandata.net/wangsiyuan/go-trustlog/api/grpc/pb"
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"go.yandata.net/wangsiyuan/go-trustlog/api/logger"
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"go.yandata.net/wangsiyuan/go-trustlog/api/model"
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"go.yandata.net/wangsiyuan/go-trustlog/internal/grpcclient"
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)
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const (
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// defaultChannelBuffer 是channel的默认缓冲区大小.
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defaultChannelBuffer = 10
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)
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// serverClients 封装单个服务器的两种服务客户端.
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type serverClients struct {
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opClient pb.OperationValidationServiceClient
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recClient pb.RecordValidationServiceClient
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}
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// Client 查询客户端，包装gRPC客户端提供操作和记录的查询及验证功能.
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type Client struct {
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connLB *grpcclient.LoadBalancer[*serverClients]
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logger logger.Logger
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}
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// ClientConfig 客户端配置.
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type ClientConfig = grpcclient.Config
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// NewClient 创建新的查询客户端.
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func NewClient(config ClientConfig, logger logger.Logger) (*Client, error) {
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// 获取服务器地址列表
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addrs, err := config.GetAddrs()
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if err != nil {
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return nil, err
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}
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// 创建连接负载均衡器，每个连接同时创建两种服务的客户端
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connLB, err := grpcclient.NewLoadBalancer(
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addrs,
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config.DialOptions,
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func(conn grpc.ClientConnInterface) *serverClients {
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return &serverClients{
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opClient: pb.NewOperationValidationServiceClient(conn),
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recClient: pb.NewRecordValidationServiceClient(conn),
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}
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},
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)
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if err != nil {
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return nil, err
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}
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logger.Info("Query client initialized", "serverCount", len(addrs))
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return &Client{
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connLB: connLB,
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logger: logger,
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}, nil
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}
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// ListOperationsRequest 列表查询请求参数.
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type ListOperationsRequest struct {
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// 分页参数
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PageSize uint64 // 页面大小
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PreTime time.Time // 上一页最后一个时间（用于游标分页）
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// 可选过滤条件
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Timestamp *time.Time // 操作时间戳
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OpSource model.Source // 操作来源
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OpCode model.OpCode // 操作代码（int32）
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DoPrefix string // 数据前缀
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DoRepository string // 数据仓库
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}
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// ListOperationsResponse 列表查询响应.
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type ListOperationsResponse struct {
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Count int64 // 数据总量
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Data []*model.Operation // 操作列表
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}
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// ListOperations 查询操作列表.
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func (c *Client) ListOperations(ctx context.Context, req ListOperationsRequest) (*ListOperationsResponse, error) {
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c.logger.DebugContext(ctx, "Querying operations list", "pageSize", req.PageSize)
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// 使用负载均衡器获取客户端
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clients := c.connLB.Next()
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client := clients.opClient
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// 构建protobuf请求
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pbReq := &pb.ListOperationReq{
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PageSize: req.PageSize,
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OpSource: string(req.OpSource),
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OpCode: int32(req.OpCode),
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DoPrefix: req.DoPrefix,
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DoRepository: req.DoRepository,
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}
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// 设置可选参数
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if !req.PreTime.IsZero() {
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pbReq.PreTime = timestamppb.New(req.PreTime)
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}
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if req.Timestamp != nil {
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pbReq.Timestamp = timestamppb.New(*req.Timestamp)
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}
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// 调用gRPC
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pbRes, err := client.ListOperations(ctx, pbReq)
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if err != nil {
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return nil, fmt.Errorf("failed to list operations: %w", err)
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}
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// 转换响应
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operations := make([]*model.Operation, 0, len(pbRes.GetData()))
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for _, pbOp := range pbRes.GetData() {
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op, convertErr := model.FromProtobuf(pbOp)
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if convertErr != nil {
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c.logger.ErrorContext(ctx, "Failed to convert operation", "error", convertErr)
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continue
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}
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operations = append(operations, op)
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}
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return &ListOperationsResponse{
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Count: pbRes.GetCount(),
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Data: operations,
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}, nil
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}
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// ValidationRequest 取证验证请求参数.
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type ValidationRequest struct {
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Time time.Time // 操作时间戳
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OpID string // 操作唯一标识符
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OpCode model.OpCode // 操作代码（int32）
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DoRepository string // 数据仓库标识
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}
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// ValidateOperation 执行操作取证验证，返回流式结果通道
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// 该方法会启动一个goroutine接收流式响应，通过返回的channel发送结果
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// 当流结束或发生错误时，channel会被关闭.
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//
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//nolint:dupl // 与 ValidateRecord 有相似逻辑，但处理不同的数据类型和 gRPC 服务
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func (c *Client) ValidateOperation(ctx context.Context, req ValidationRequest) (<-chan *model.ValidationResult, error) {
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c.logger.InfoContext(ctx, "Starting validation for operation", "opID", req.OpID)
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// 使用负载均衡器获取客户端
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clients := c.connLB.Next()
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client := clients.opClient
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// 构建protobuf请求
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pbReq := &pb.ValidationReq{
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Time: timestamppb.New(req.Time),
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OpId: req.OpID,
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OpCode: int32(req.OpCode),
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DoRepository: req.DoRepository,
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}
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// 调用gRPC流式方法
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stream, err := client.ValidateOperation(ctx, pbReq)
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if err != nil {
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return nil, fmt.Errorf("failed to start validation: %w", err)
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}
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// 创建结果通道
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resultChan := make(chan *model.ValidationResult, defaultChannelBuffer)
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// 启动goroutine接收流式响应
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go func() {
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defer close(resultChan)
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for {
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pbRes, recvErr := stream.Recv()
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if recvErr != nil {
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if errors.Is(recvErr, io.EOF) {
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// 流正常结束
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c.logger.DebugContext(ctx, "Validation stream completed", "opID", req.OpID)
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return
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}
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// 发生错误
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c.logger.ErrorContext(ctx, "Error receiving validation result", "error", recvErr)
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// 发送错误结果
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resultChan <- &model.ValidationResult{
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Code: model.ValidationCodeFailed,
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Msg: fmt.Sprintf("Stream error: %v", recvErr),
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}
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return
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}
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// 转换并发送结果
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result, convertErr := model.FromProtobufValidationResult(pbRes)
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if convertErr != nil {
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c.logger.ErrorContext(ctx, "Failed to convert validation result", "error", convertErr)
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continue
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}
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select {
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case resultChan <- result:
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c.logger.DebugContext(ctx, "Sent validation result", "code", result.Code, "progress", result.Progress)
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case <-ctx.Done():
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c.logger.InfoContext(ctx, "Context cancelled, stopping validation stream")
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return
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}
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}
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}()
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return resultChan, nil
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}
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// ValidateOperationSync 同步执行操作取证验证，阻塞直到获得最终结果
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// 该方法会处理所有中间进度，只返回最终的完成结果.
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func (c *Client) ValidateOperationSync(
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ctx context.Context,
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req ValidationRequest,
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progressCallback func(*model.ValidationResult),
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) (*model.ValidationResult, error) {
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resultChan, err := c.ValidateOperation(ctx, req)
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if err != nil {
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return nil, err
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}
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var finalResult *model.ValidationResult
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for result := range resultChan {
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if result.IsCompleted() || result.IsFailed() {
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finalResult = result
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break
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}
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// 如果提供了进度回调，则调用
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if progressCallback != nil {
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progressCallback(result)
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}
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}
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if finalResult == nil {
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return nil, errors.New("validation completed without final result")
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}
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return finalResult, nil
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}
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// ListRecordsRequest 列表查询请求参数.
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type ListRecordsRequest struct {
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// 分页参数
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PageSize uint64 // 页面大小
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PreTime time.Time // 上一页最后一个时间（用于游标分页）
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// 可选过滤条件
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DoPrefix string // 数据前缀
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RCType string // 记录类型
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}
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// ListRecordsResponse 列表查询响应.
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type ListRecordsResponse struct {
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Count int64 // 数据总量
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Data []*model.Record // 记录列表
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}
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// ListRecords 查询记录列表.
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func (c *Client) ListRecords(ctx context.Context, req ListRecordsRequest) (*ListRecordsResponse, error) {
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c.logger.DebugContext(ctx, "Querying records list", "pageSize", req.PageSize)
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// 使用负载均衡器获取客户端
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clients := c.connLB.Next()
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client := clients.recClient
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// 构建protobuf请求
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pbReq := &pb.ListRecordReq{
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PageSize: req.PageSize,
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DoPrefix: req.DoPrefix,
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RcType: req.RCType,
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}
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// 设置可选参数
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if !req.PreTime.IsZero() {
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pbReq.PreTime = timestamppb.New(req.PreTime)
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}
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// 调用gRPC
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pbRes, err := client.ListRecords(ctx, pbReq)
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if err != nil {
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return nil, fmt.Errorf("failed to list records: %w", err)
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}
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// 转换响应
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records := make([]*model.Record, 0, len(pbRes.GetData()))
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for _, pbRec := range pbRes.GetData() {
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rec, convertErr := model.RecordFromProtobuf(pbRec)
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if convertErr != nil {
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c.logger.ErrorContext(ctx, "Failed to convert record", "error", convertErr)
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continue
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}
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records = append(records, rec)
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}
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return &ListRecordsResponse{
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Count: pbRes.GetCount(),
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Data: records,
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}, nil
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}
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// RecordValidationRequest 记录验证请求参数.
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type RecordValidationRequest struct {
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Timestamp time.Time // 记录时间戳
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RecordID string // 要验证的记录ID
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DoPrefix string // 数据前缀（可选）
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RCType string // 记录类型
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}
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// ValidateRecord 执行记录验证，返回流式结果通道
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// 该方法会启动一个goroutine接收流式响应，通过返回的channel发送结果
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// 当流结束或发生错误时，channel会被关闭.
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//
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//nolint:dupl // 与 ValidateOperation 有相似逻辑，但处理不同的数据类型和 gRPC 服务
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func (c *Client) ValidateRecord(
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ctx context.Context,
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req RecordValidationRequest,
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) (<-chan *model.RecordValidationResult, error) {
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c.logger.InfoContext(ctx, "Starting validation for record", "recordID", req.RecordID)
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// 使用负载均衡器获取客户端
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clients := c.connLB.Next()
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client := clients.recClient
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// 构建protobuf请求
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pbReq := &pb.RecordValidationReq{
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Timestamp: timestamppb.New(req.Timestamp),
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RecordId: req.RecordID,
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DoPrefix: req.DoPrefix,
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RcType: req.RCType,
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}
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// 调用gRPC流式方法
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stream, err := client.ValidateRecord(ctx, pbReq)
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if err != nil {
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return nil, fmt.Errorf("failed to start validation: %w", err)
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}
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// 创建结果通道
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resultChan := make(chan *model.RecordValidationResult, defaultChannelBuffer)
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// 启动goroutine接收流式响应
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go func() {
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defer close(resultChan)
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for {
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pbRes, recvErr := stream.Recv()
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if recvErr != nil {
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if errors.Is(recvErr, io.EOF) {
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// 流正常结束
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c.logger.DebugContext(ctx, "Validation stream completed", "recordID", req.RecordID)
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return
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}
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// 发生错误
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c.logger.ErrorContext(ctx, "Error receiving validation result", "error", recvErr)
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// 发送错误结果
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resultChan <- &model.RecordValidationResult{
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Code: model.ValidationCodeFailed,
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Msg: fmt.Sprintf("Stream error: %v", recvErr),
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}
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return
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}
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// 转换并发送结果
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result, convertErr := model.RecordFromProtobufValidationResult(pbRes)
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if convertErr != nil {
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c.logger.ErrorContext(ctx, "Failed to convert validation result", "error", convertErr)
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continue
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}
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select {
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case resultChan <- result:
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c.logger.DebugContext(ctx, "Sent validation result", "code", result.Code, "progress", result.Progress)
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case <-ctx.Done():
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c.logger.InfoContext(ctx, "Context cancelled, stopping validation stream")
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return
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}
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}
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}()
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return resultChan, nil
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}
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// ValidateRecordSync 同步执行记录验证，阻塞直到获得最终结果
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// 该方法会处理所有中间进度，只返回最终的完成结果.
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func (c *Client) ValidateRecordSync(
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ctx context.Context,
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req RecordValidationRequest,
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progressCallback func(*model.RecordValidationResult),
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) (*model.RecordValidationResult, error) {
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resultChan, err := c.ValidateRecord(ctx, req)
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if err != nil {
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return nil, err
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}
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var finalResult *model.RecordValidationResult
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for result := range resultChan {
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if result.IsCompleted() || result.IsFailed() {
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finalResult = result
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break
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}
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// 如果提供了进度回调，则调用
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if progressCallback != nil {
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progressCallback(result)
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}
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}
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if finalResult == nil {
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return nil, errors.New("validation completed without final result")
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}
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return finalResult, nil
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}
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// Close 关闭客户端连接.
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func (c *Client) Close() error {
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if c.connLB != nil {
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return c.connLB.Close()
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}
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return nil
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}
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// GetLowLevelOperationClient 获取底层的操作gRPC客户端（用于高级用户自定义操作）
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// 注意：使用负载均衡时，每次调用此方法将返回轮询的下一个客户端.
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func (c *Client) GetLowLevelOperationClient() pb.OperationValidationServiceClient {
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return c.connLB.Next().opClient
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}
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// GetLowLevelRecordClient 获取底层的记录gRPC客户端（用于高级用户自定义操作）
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// 注意：使用负载均衡时，每次调用此方法将返回轮询的下一个客户端.
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func (c *Client) GetLowLevelRecordClient() pb.RecordValidationServiceClient {
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return c.connLB.Next().recClient
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}
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