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server.go

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  • server.go 5.17 KiB
    package extension
    
    import (
    	"context"
    	"strings"
    
    	"git.perx.ru/perxis/perxis-go/pkg/action"
    	"git.perx.ru/perxis/perxis-go/pkg/errors"
    	"git.perx.ru/perxis/perxis-go/pkg/operation"
    	pb "git.perx.ru/perxis/perxis-go/proto/extensions"
    	"google.golang.org/protobuf/proto"
    )
    
    type Server struct {
    	extensions map[string]Extension
    	operations operation.Service
    	pb.UnimplementedExtensionServiceServer
    }
    
    func NewServer(operation operation.Service, extensions ...Extension) *Server {
    	srv := &Server{
    		extensions: make(map[string]Extension, len(extensions)),
    		// todo: нужно как-то неявно создавать и регистрировать сервер операций
    		operations: operation,
    	}
    	for _, s := range extensions {
    		srv.extensions[s.GetDescriptor().Extension] = s
    	}
    	return srv
    }
    
    func (s *Server) getExtensions(_ context.Context, extensions []string) ([]Extension, error) {
    	var res []Extension
    	for _, ext := range extensions {
    		e, ok := s.extensions[ext]
    		if !ok {
    			return nil, errors.Wrap(ErrUnknownExtension, ext)
    		}
    
    		res = append(res, e)
    	}
    	return res, nil
    }
    
    func (s *Server) Install(ctx context.Context, req *InstallRequest) (*operation.Proto, error) {
    	exts, err := s.getExtensions(ctx, req.Extensions)
    	if err != nil {
    		return nil, err
    	}
    
    	desc := "Install extensions " + strings.Join(req.Extensions, ", ")
    	op, err := s.operations.Create(ctx, desc,
    		func(ctx context.Context) (proto.Message, error) {
    			for _, ext := range exts {
    				if err := ext.Install(ctx, req); err != nil {
    					return nil, errors.Wrap(err, ext.GetDescriptor().Extension)
    				}
    			}
    			return nil, nil
    		})
    
    	return op.Proto(), err
    }
    
    func (s *Server) Uninstall(ctx context.Context, req *UninstallRequest) (*operation.Proto, error) {
    	exts, err := s.getExtensions(ctx, req.Extensions)
    	if err != nil {
    		return nil, err
    	}