/
proxy.go
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/
proxy.go
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// Copyright 2019 Authors of Cilium
//
// 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 endpoint
import (
"reflect"
"github.com/cilium/cilium/pkg/completion"
"github.com/cilium/cilium/pkg/policy"
"github.com/cilium/cilium/pkg/proxy/logger"
"github.com/cilium/cilium/pkg/revert"
)
// EndpointProxy defines any L7 proxy with which an Endpoint must interact.
type EndpointProxy interface {
CreateOrUpdateRedirect(l4 policy.ProxyPolicy, id string, localEndpoint logger.EndpointUpdater, wg *completion.WaitGroup) (proxyPort uint16, err error, finalizeFunc revert.FinalizeFunc, revertFunc revert.RevertFunc)
RemoveRedirect(id string, wg *completion.WaitGroup) (error, revert.FinalizeFunc, revert.RevertFunc)
UpdateNetworkPolicy(ep logger.EndpointUpdater, policy *policy.L4Policy, ingressPolicyEnforced, egressPolicyEnforced bool, wg *completion.WaitGroup) (error, func() error)
UseCurrentNetworkPolicy(ep logger.EndpointUpdater, policy *policy.L4Policy, wg *completion.WaitGroup)
RemoveNetworkPolicy(ep logger.EndpointInfoSource)
}
// SetProxy sets the proxy for this endpoint.
func (e *Endpoint) SetProxy(p EndpointProxy) {
e.unconditionalLock()
defer e.unlock()
e.proxy = p
}
func (e *Endpoint) removeNetworkPolicy() {
if e.isProxyDisabled() {
return
}
e.proxy.RemoveNetworkPolicy(e)
}
func (e *Endpoint) isProxyDisabled() bool {
return e.proxy == nil || reflect.ValueOf(e.proxy).IsNil()
}
// FakeEndpointProxy is a stub proxy used for testing.
type FakeEndpointProxy struct{}
// CreateOrUpdateRedirect does nothing.
func (f *FakeEndpointProxy) CreateOrUpdateRedirect(l4 policy.ProxyPolicy, id string, localEndpoint logger.EndpointUpdater, wg *completion.WaitGroup) (proxyPort uint16, err error, finalizeFunc revert.FinalizeFunc, revertFunc revert.RevertFunc) {
return
}
// RemoveRedirect does nothing.
func (f *FakeEndpointProxy) RemoveRedirect(id string, wg *completion.WaitGroup) (error, revert.FinalizeFunc, revert.RevertFunc) {
return nil, nil, nil
}
// UpdateNetworkPolicy does nothing.
func (f *FakeEndpointProxy) UpdateNetworkPolicy(ep logger.EndpointUpdater, policy *policy.L4Policy, ingressPolicyEnforced, egressPolicyEnforced bool, wg *completion.WaitGroup) (error, func() error) {
return nil, nil
}
// UseCurrentNetworkPolicy does nothing.
func (f *FakeEndpointProxy) UseCurrentNetworkPolicy(ep logger.EndpointUpdater, policy *policy.L4Policy, wg *completion.WaitGroup) {
}
// RemoveNetworkPolicy does nothing.
func (f *FakeEndpointProxy) RemoveNetworkPolicy(ep logger.EndpointInfoSource) {}