forked from istio/istio
/
kube.go
137 lines (113 loc) · 3.58 KB
/
kube.go
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// Copyright 2018 Istio 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 mixer
import (
"fmt"
"io"
"net"
"google.golang.org/grpc"
istioMixerV1 "istio.io/api/mixer/v1"
"istio.io/istio/mixer/pkg/server"
"istio.io/istio/pkg/test/framework/components/environment/kube"
"istio.io/istio/pkg/test/framework/components/istio"
"istio.io/istio/pkg/test/framework/resource"
"istio.io/istio/pkg/test/scopes"
)
var _ Instance = &kubeComponent{}
var _ io.Closer = &kubeComponent{}
type kubeComponent struct {
id resource.ID
*client
env *kube.Environment
}
// NewKubeComponent factory function for the component
func newKube(ctx resource.Context, _ Config) (*kubeComponent, error) {
c := &kubeComponent{
env: ctx.Environment().(*kube.Environment),
}
c.client = &client{
local: false,
env: c.env,
// Use the DefaultArgs to get config identity attribute
args: server.DefaultArgs(),
clients: make(map[string]istioMixerV1.MixerClient),
}
// TODO: This should be obtained from an Istio deployment.
cfg, err := istio.DefaultConfig(ctx)
if err != nil {
return nil, err
}
ns := cfg.SystemNamespace
for _, serviceType := range []string{telemetryService, policyService} {
fetchFn := c.env.NewSinglePodFetch(ns, "istio=mixer", "istio-mixer-type="+serviceType)
pods, err := c.env.WaitUntilPodsAreReady(fetchFn)
if err != nil {
return nil, err
}
pod := pods[0]
scopes.Framework.Debugf("completed wait for Mixer pod(%s)", serviceType)
port, err := getGrpcPort(c.env, ns, serviceType)
if err != nil {
return nil, err
}
scopes.Framework.Debugf("extracted grpc port for service: %v", port)
forwarder, err := c.env.NewPortForwarder(pod, 0, port)
if err != nil {
return nil, err
}
if err = forwarder.Start(); err != nil {
return nil, err
}
c.client.forwarders = append(c.client.forwarders, forwarder)
scopes.Framework.Debugf("initialized port forwarder: %v", forwarder.Address())
conn, err := grpc.Dial(forwarder.Address(), grpc.WithInsecure())
if err != nil {
return nil, err
}
c.client.conns = append(c.client.conns, conn)
scopes.Framework.Debug("connected to Mixer pod through port forwarder")
client := istioMixerV1.NewMixerClient(conn)
c.client.clients[serviceType] = client
}
return c, nil
}
func (c *kubeComponent) ID() resource.ID {
return c.id
}
func (c *kubeComponent) GetCheckAddress() net.Addr {
return c.client.server.Addr()
}
func (c *kubeComponent) GetReportAddress() net.Addr {
return c.client.server.Addr()
}
func (c *kubeComponent) Close() error {
if c.client != nil {
client := c.client
c.client = nil
return client.Close()
}
return nil
}
func getGrpcPort(e *kube.Environment, ns, serviceType string) (uint16, error) {
svc, err := e.Accessor.GetService(ns, "istio-"+serviceType)
if err != nil {
return 0, fmt.Errorf("failed to retrieve service %s: %v", serviceType, err)
}
for _, portInfo := range svc.Spec.Ports {
if portInfo.Name == grpcPortName {
return uint16(portInfo.TargetPort.IntValue()), nil
}
}
return 0, fmt.Errorf("failed to get target port in service %s", serviceType)
}