/
reply.go
52 lines (43 loc) · 1.26 KB
/
reply.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of Hubble
package filters
import (
"context"
flowpb "github.com/cilium/cilium/api/v1/flow"
v1 "github.com/cilium/cilium/pkg/hubble/api/v1"
)
func filterByReplyField(replyParams []bool) FilterFunc {
return func(ev *v1.Event) bool {
if len(replyParams) == 0 {
return true
}
switch f := ev.Event.(type) {
case *flowpb.Flow:
// FIXME: For dropped flows, we handle `is_reply=unknown` as
// `is_reply=false`. This is for compatibility with older clients
// (such as Hubble UI) which assume this filter applies to the
// deprecated `reply` field, where dropped flows always have
// `reply=false`.
if f.GetIsReply() == nil && f.GetVerdict() != flowpb.Verdict_DROPPED {
return false
}
reply := f.GetIsReply().GetValue()
for _, replyParam := range replyParams {
if reply == replyParam {
return true
}
}
}
return false
}
}
// ReplyFilter implements filtering for reply flows
type ReplyFilter struct{}
// OnBuildFilter builds a reply filter
func (r *ReplyFilter) OnBuildFilter(ctx context.Context, ff *flowpb.FlowFilter) ([]FilterFunc, error) {
var fs []FilterFunc
if ff.GetReply() != nil {
fs = append(fs, filterByReplyField(ff.GetReply()))
}
return fs, nil
}