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globalnetworksetprocessor.go
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globalnetworksetprocessor.go
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// Copyright (c) 2018 Tigera, Inc. All rights reserved.
// 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 updateprocessors
import (
"errors"
log "github.com/sirupsen/logrus"
apiv3 "github.com/mangqiqi/libcalico-go/lib/apis/v3"
"github.com/mangqiqi/libcalico-go/lib/backend/model"
"github.com/mangqiqi/libcalico-go/lib/backend/watchersyncer"
cnet "github.com/mangqiqi/libcalico-go/lib/net"
)
// Create a new SyncerUpdateProcessor to sync GlobalNetworkSet data in v1 format for
// consumption by Felix.
func NewGlobalNetworkSetUpdateProcessor() watchersyncer.SyncerUpdateProcessor {
return NewConflictResolvingCacheUpdateProcessor(apiv3.KindGlobalNetworkSet, convertGlobalNetworkSetV3ToV1)
}
// Convert v3 KVPair to the equivalent v1 KVPair.
func convertGlobalNetworkSetV3ToV1(kvp *model.KVPair) (*model.KVPair, error) {
// Validate against incorrect key/value kinds. This indicates a code bug rather
// than a user error.
v3key, ok := kvp.Key.(model.ResourceKey)
if !ok || v3key.Kind != apiv3.KindGlobalNetworkSet {
return nil, errors.New("Key is not a valid GlobalNetworkSet resource key")
}
v3res, ok := kvp.Value.(*apiv3.GlobalNetworkSet)
if !ok {
return nil, errors.New("Value is not a valid GlobalNetworkSet resource key")
}
v1key := model.NetworkSetKey{
Name: v3res.GetName(),
}
var addrs []cnet.IPNet
for _, cidrString := range v3res.Spec.Nets {
_, ipNet, err := cnet.ParseCIDROrIP(cidrString)
if err != nil {
// Validation should prevent this.
log.WithError(err).WithFields(log.Fields{
"CIDR": cidrString,
"networkSet": v3res.GetName(),
}).Warn("Invalid CIDR")
continue
}
addrs = append(addrs, *ipNet)
}
v1value := &model.NetworkSet{
Labels: v3res.GetLabels(),
Nets: addrs,
}
return &model.KVPair{
Key: v1key,
Value: v1value,
Revision: kvp.Revision,
}, nil
}