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endpoint.go
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endpoint.go
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// Copyright Project Contour Authors
// 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 v3
import (
envoy_core_v3 "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
envoy_endpoint_v3 "github.com/envoyproxy/go-control-plane/envoy/config/endpoint/v3"
"github.com/projectcontour/contour/internal/protobuf"
)
// LBEndpoint creates a new LbEndpoint.
func LBEndpoint(addr *envoy_core_v3.Address) *envoy_endpoint_v3.LbEndpoint {
return &envoy_endpoint_v3.LbEndpoint{
HostIdentifier: &envoy_endpoint_v3.LbEndpoint_Endpoint{
Endpoint: &envoy_endpoint_v3.Endpoint{
Address: addr,
},
},
}
}
// Endpoints returns a slice of LocalityLbEndpoints.
// The slice contains one entry, with one LbEndpoint per
// *envoy_core_v3.Address supplied.
func Endpoints(addrs ...*envoy_core_v3.Address) []*envoy_endpoint_v3.LocalityLbEndpoints {
lbendpoints := make([]*envoy_endpoint_v3.LbEndpoint, 0, len(addrs))
for _, addr := range addrs {
lbendpoints = append(lbendpoints, LBEndpoint(addr))
}
return []*envoy_endpoint_v3.LocalityLbEndpoints{{
LbEndpoints: lbendpoints,
}}
}
func WeightedEndpoints(weight uint32, addrs ...*envoy_core_v3.Address) []*envoy_endpoint_v3.LocalityLbEndpoints {
lbendpoints := Endpoints(addrs...)
lbendpoints[0].LoadBalancingWeight = protobuf.UInt32(weight)
return lbendpoints
}
// ClusterLoadAssignment returns a *envoy_endpoint_v3.ClusterLoadAssignment with a single
// LocalityLbEndpoints of the supplied addresses.
func ClusterLoadAssignment(name string, addrs ...*envoy_core_v3.Address) *envoy_endpoint_v3.ClusterLoadAssignment {
if len(addrs) == 0 {
return &envoy_endpoint_v3.ClusterLoadAssignment{ClusterName: name}
}
return &envoy_endpoint_v3.ClusterLoadAssignment{
ClusterName: name,
Endpoints: Endpoints(addrs...),
}
}