github.com/crowdsecurity/crowdsec@v1.6.1/pkg/csplugin/notifier.go (about)

     1  package csplugin
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  
     7  	plugin "github.com/hashicorp/go-plugin"
     8  	"google.golang.org/grpc"
     9  
    10  	"github.com/crowdsecurity/crowdsec/pkg/protobufs"
    11  )
    12  
    13  type Notifier interface {
    14  	Notify(ctx context.Context, notification *protobufs.Notification) (*protobufs.Empty, error)
    15  	Configure(ctx context.Context, cfg *protobufs.Config) (*protobufs.Empty, error)
    16  }
    17  
    18  type NotifierPlugin struct {
    19  	plugin.Plugin
    20  	Impl Notifier
    21  }
    22  
    23  type GRPCClient struct{ client protobufs.NotifierClient }
    24  
    25  func (m *GRPCClient) Notify(ctx context.Context, notification *protobufs.Notification) (*protobufs.Empty, error) {
    26  	done := make(chan error)
    27  	go func() {
    28  		_, err := m.client.Notify(
    29  			ctx, &protobufs.Notification{Text: notification.Text, Name: notification.Name},
    30  		)
    31  		done <- err
    32  	}()
    33  	select {
    34  	case err := <-done:
    35  		return &protobufs.Empty{}, err
    36  
    37  	case <-ctx.Done():
    38  		return &protobufs.Empty{}, fmt.Errorf("timeout exceeded")
    39  	}
    40  }
    41  
    42  func (m *GRPCClient) Configure(ctx context.Context, config *protobufs.Config) (*protobufs.Empty, error) {
    43  	_, err := m.client.Configure(
    44  		context.Background(), config,
    45  	)
    46  	return &protobufs.Empty{}, err
    47  }
    48  
    49  type GRPCServer struct {
    50  	Impl Notifier
    51  }
    52  
    53  func (p *NotifierPlugin) GRPCServer(broker *plugin.GRPCBroker, s *grpc.Server) error {
    54  	protobufs.RegisterNotifierServer(s, p.Impl)
    55  	return nil
    56  }
    57  
    58  func (p *NotifierPlugin) GRPCClient(ctx context.Context, broker *plugin.GRPCBroker, c *grpc.ClientConn) (interface{}, error) {
    59  	return &GRPCClient{client: protobufs.NewNotifierClient(c)}, nil
    60  }