mirror of
https://github.com/gravitational/teleport.git
synced 2026-09-21 14:35:22 +08:00
Brian Joerger
cf6473feb9
* Move gRPC error intercetpors to api/utils/grpc/interceptors. * Use error interceptors in api client and mock server. * Apply suggestions from CR. * Unwrap FromGRPC errors in middleware. * Use gRPC auth service in tests instead of external example service. * It's gRPC!!! * Fix unit test. * Add error interceptor to proxy client. * Fix merge conflict.
112 lines
2.5 KiB
Go
112 lines
2.5 KiB
Go
/*
|
|
Copyright 2020 Gravitational, Inc.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package client
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
|
|
"github.com/gravitational/trace"
|
|
|
|
"github.com/gravitational/teleport/api/client/proto"
|
|
"github.com/gravitational/teleport/api/types"
|
|
)
|
|
|
|
// NewWatcher returns a new streamWatcher
|
|
func (c *Client) NewWatcher(ctx context.Context, watch types.Watch) (types.Watcher, error) {
|
|
cancelCtx, cancel := context.WithCancel(ctx)
|
|
protoWatch := proto.Watch{
|
|
Kinds: watch.Kinds,
|
|
AllowPartialSuccess: watch.AllowPartialSuccess,
|
|
}
|
|
stream, err := c.grpc.WatchEvents(cancelCtx, &protoWatch)
|
|
if err != nil {
|
|
cancel()
|
|
return nil, trace.Wrap(err)
|
|
}
|
|
w := &streamWatcher{
|
|
stream: stream,
|
|
ctx: cancelCtx,
|
|
cancel: cancel,
|
|
eventsC: make(chan types.Event),
|
|
}
|
|
go w.receiveEvents()
|
|
return w, nil
|
|
}
|
|
|
|
type streamWatcher struct {
|
|
mu sync.RWMutex
|
|
stream proto.AuthService_WatchEventsClient
|
|
ctx context.Context
|
|
cancel context.CancelFunc
|
|
eventsC chan types.Event
|
|
err error
|
|
}
|
|
|
|
// Error returns the streamWatcher's error
|
|
func (w *streamWatcher) Error() error {
|
|
w.mu.RLock()
|
|
defer w.mu.RUnlock()
|
|
if w.err == nil {
|
|
return trace.Wrap(w.ctx.Err())
|
|
}
|
|
return w.err
|
|
}
|
|
|
|
func (w *streamWatcher) closeWithError(err error) {
|
|
w.mu.Lock()
|
|
defer w.mu.Unlock()
|
|
w.Close()
|
|
w.err = err
|
|
}
|
|
|
|
// Events returns the streamWatcher's events channel
|
|
func (w *streamWatcher) Events() <-chan types.Event {
|
|
return w.eventsC
|
|
}
|
|
|
|
func (w *streamWatcher) receiveEvents() {
|
|
for {
|
|
event, err := w.stream.Recv()
|
|
if err != nil {
|
|
w.closeWithError(trace.Wrap(err))
|
|
return
|
|
}
|
|
out, err := EventFromGRPC(event)
|
|
if err != nil {
|
|
w.closeWithError(trace.Wrap(err))
|
|
return
|
|
}
|
|
select {
|
|
case w.eventsC <- *out:
|
|
case <-w.Done():
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
// Done returns a channel that closes once the streamWatcher is Closed
|
|
func (w *streamWatcher) Done() <-chan struct{} {
|
|
return w.ctx.Done()
|
|
}
|
|
|
|
// Close the streamWatcher
|
|
func (w *streamWatcher) Close() error {
|
|
w.cancel()
|
|
return nil
|
|
}
|