100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
package observer
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
|
|
"github.com/go-gost/core/logger"
|
|
"github.com/go-gost/core/observer"
|
|
"github.com/go-gost/core/observer/stats"
|
|
"github.com/go-gost/plugin/observer/proto"
|
|
"github.com/go-gost/x/internal/plugin"
|
|
"github.com/go-gost/x/service"
|
|
"google.golang.org/grpc"
|
|
)
|
|
|
|
type grpcPlugin struct {
|
|
conn grpc.ClientConnInterface
|
|
client proto.ObserverClient
|
|
log logger.Logger
|
|
}
|
|
|
|
// NewGRPCPlugin creates an Observer plugin based on gRPC.
|
|
func NewGRPCPlugin(name string, addr string, opts ...plugin.Option) observer.Observer {
|
|
var options plugin.Options
|
|
for _, opt := range opts {
|
|
opt(&options)
|
|
}
|
|
|
|
log := logger.Default().WithFields(map[string]any{
|
|
"kind": "observer",
|
|
"observer": name,
|
|
})
|
|
conn, err := plugin.NewGRPCConn(addr, &options)
|
|
if err != nil {
|
|
log.Error(err)
|
|
return nil
|
|
}
|
|
|
|
p := &grpcPlugin{
|
|
conn: conn,
|
|
log: log,
|
|
}
|
|
if conn != nil {
|
|
p.client = proto.NewObserverClient(conn)
|
|
}
|
|
return p
|
|
}
|
|
|
|
func (p *grpcPlugin) Observe(ctx context.Context, events []observer.Event, opts ...observer.Option) error {
|
|
if p.client == nil || len(events) == 0 {
|
|
return nil
|
|
}
|
|
|
|
var req proto.ObserveRequest
|
|
|
|
for _, event := range events {
|
|
switch event.Type() {
|
|
case observer.EventStatus:
|
|
ev := event.(service.ServiceEvent)
|
|
req.Events = append(req.Events, &proto.Event{
|
|
Kind: ev.Kind,
|
|
Service: ev.Service,
|
|
Type: string(event.Type()),
|
|
Status: &proto.ServiceStatus{
|
|
State: string(ev.State),
|
|
Msg: ev.Msg,
|
|
},
|
|
})
|
|
case observer.EventStats:
|
|
ev := event.(stats.StatsEvent)
|
|
req.Events = append(req.Events, &proto.Event{
|
|
Kind: ev.Kind,
|
|
Service: ev.Service,
|
|
Client: ev.Client,
|
|
Type: string(event.Type()),
|
|
Stats: &proto.Stats{
|
|
TotalConns: ev.TotalConns,
|
|
CurrentConns: ev.CurrentConns,
|
|
InputBytes: ev.InputBytes,
|
|
OutputBytes: ev.OutputBytes,
|
|
TotalErrs: ev.TotalErrs,
|
|
},
|
|
})
|
|
}
|
|
}
|
|
_, err := p.client.Observe(ctx, &req)
|
|
if err != nil {
|
|
p.log.Error(err)
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (p *grpcPlugin) Close() error {
|
|
if closer, ok := p.conn.(io.Closer); ok {
|
|
return closer.Close()
|
|
}
|
|
return nil
|
|
}
|