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https://github.com/status-im/consul.git
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bba3eb8cdd
Require use of mesh gateways in order for service mesh data plane traffic to flow between peers. This also adds plumbing for envoy integration tests involving peers, and one starter peering test.
80 lines
1.9 KiB
Go
80 lines
1.9 KiB
Go
package subscribe
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import (
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"sync"
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"time"
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"github.com/hashicorp/go-uuid"
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"github.com/hashicorp/consul/agent/consul/stream"
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"github.com/hashicorp/consul/proto/pbsubscribe"
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)
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// streamID is used in logs as a unique identifier for a subscription. The value
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// is created lazily on the first call to String() so that we do not call it
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// if trace logging is disabled.
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// If a random UUID can not be created, defaults to the current time formatted
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// as RFC3339Nano.
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//
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// TODO(banks) it might be nice one day to replace this with OpenTracing ID
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// if one is set etc. but probably pointless until we support that properly
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// in other places so it's actually propagated properly. For now this just
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// makes lifetime of a stream more traceable in our regular server logs for
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// debugging/dev.
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type streamID struct {
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once sync.Once
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id string
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}
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func (s *streamID) String() string {
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s.once.Do(func() {
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var err error
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s.id, err = uuid.GenerateUUID()
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if err != nil {
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s.id = time.Now().Format(time.RFC3339Nano)
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}
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})
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return s.id
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}
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func newLoggerForRequest(l Logger, req *pbsubscribe.SubscribeRequest) Logger {
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return l.With(
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"topic", req.Topic.String(),
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"dc", req.Datacenter,
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"peer", req.PeerName,
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"key", req.Key,
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"namespace", req.Namespace,
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"partition", req.Partition,
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"request_index", req.Index,
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"stream_id", &streamID{})
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}
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type eventLogger struct {
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logger Logger
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snapshotDone bool
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count uint64
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}
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func (l *eventLogger) Trace(e stream.Event) {
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switch {
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case e.IsEndOfSnapshot():
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l.snapshotDone = true
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l.logger.Trace("snapshot complete", "index", e.Index, "sent", l.count)
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return
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case e.IsNewSnapshotToFollow():
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l.logger.Trace("starting new snapshot", "sent", l.count)
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return
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}
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size := 1
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if l, ok := e.Payload.(length); ok {
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size = l.Len()
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}
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l.logger.Trace("sending events", "index", e.Index, "sent", l.count, "batch_size", size)
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l.count += uint64(size)
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}
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type length interface {
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Len() int
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}
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