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identity.go
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identity.go
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// Copyright 2019-2020 Authors of Hubble
//
// 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 filters
import (
"context"
flowpb "github.com/cilium/cilium/api/v1/flow"
v1 "github.com/cilium/cilium/pkg/hubble/api/v1"
)
func sourceEndpoint(ev *v1.Event) *flowpb.Endpoint {
return ev.GetFlow().GetSource()
}
func destinationEndpoint(ev *v1.Event) *flowpb.Endpoint {
return ev.GetFlow().GetDestination()
}
func filterByIdentity(identities []uint32, getEndpoint func(*v1.Event) *flowpb.Endpoint) FilterFunc {
return func(ev *v1.Event) bool {
if endpoint := getEndpoint(ev); endpoint != nil {
for _, i := range identities {
if i == endpoint.Identity {
return true
}
}
}
return false
}
}
// IdentityFilter implements filtering based on security identity
type IdentityFilter struct{}
// OnBuildFilter builds a security identity filter
func (i *IdentityFilter) OnBuildFilter(ctx context.Context, ff *flowpb.FlowFilter) ([]FilterFunc, error) {
var fs []FilterFunc
if ff.GetSourceIdentity() != nil {
fs = append(fs, filterByIdentity(ff.GetSourceIdentity(), sourceEndpoint))
}
if ff.GetDestinationIdentity() != nil {
fs = append(fs, filterByIdentity(ff.GetDestinationIdentity(), destinationEndpoint))
}
return fs, nil
}