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test_upstream.go
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test_upstream.go
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package v1helpers
import (
"bytes"
"context"
"crypto/tls"
"crypto/x509"
"fmt"
"io/ioutil"
"net"
"net/http"
"net/url"
"strconv"
"time"
"github.com/golang/protobuf/ptypes/wrappers"
"github.com/golang/protobuf/proto"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
gloov1 "github.com/solo-io/gloo/projects/gloo/pkg/api/v1"
static_plugin_gloo "github.com/solo-io/gloo/projects/gloo/pkg/api/v1/options/static"
"github.com/solo-io/gloo/test/helpers"
testgrpcservice "github.com/solo-io/gloo/test/v1helpers/test_grpc_service"
"github.com/solo-io/solo-kit/pkg/api/v1/resources/core"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials"
healthpb "google.golang.org/grpc/health/grpc_health_v1"
)
type ReceivedRequest struct {
Method string
Headers map[string][]string
URL *url.URL
Body []byte
Host string
GRPCRequest proto.Message
Port uint32
}
func NewTestHttpUpstream(ctx context.Context, addr string) *TestUpstream {
backendPort, responses := runTestServer(ctx, "", false)
return newTestUpstream(addr, []uint32{backendPort}, responses)
}
func NewTestHttpUpstreamWithReply(ctx context.Context, addr, reply string) *TestUpstream {
backendPort, responses := runTestServer(ctx, reply, false)
return newTestUpstream(addr, []uint32{backendPort}, responses)
}
func NewTestHttpUpstreamWithReplyAndHealthReply(ctx context.Context, addr, reply, healthReply string) *TestUpstream {
backendPort, responses := runTestServerWithHealthReply(ctx, reply, healthReply, false)
return newTestUpstream(addr, []uint32{backendPort}, responses)
}
func NewTestHttpsUpstreamWithReply(ctx context.Context, addr, reply string) *TestUpstream {
backendPort, responses := runTestServer(ctx, reply, true)
return newTestUpstream(addr, []uint32{backendPort}, responses)
}
func NewTestGRPCUpstream(ctx context.Context, addr string, replicas int) *TestUpstream {
grpcServices := make([]*testgrpcservice.TestGRPCServer, replicas)
for i := range grpcServices {
grpcServices[i] = testgrpcservice.RunServer(ctx)
}
received := make(chan *ReceivedRequest, 100)
for _, srv := range grpcServices {
srv := srv
go func() {
defer GinkgoRecover()
for r := range srv.C {
received <- &ReceivedRequest{GRPCRequest: r, Port: srv.Port}
}
}()
}
ports := make([]uint32, 0, len(grpcServices))
for _, v := range grpcServices {
ports = append(ports, v.Port)
}
us := newTestUpstream(addr, ports, received)
us.Upstream.UseHttp2 = &wrappers.BoolValue{Value: true}
us.GrpcServers = grpcServices
return us
}
type TestUpstream struct {
Upstream *gloov1.Upstream
C <-chan *ReceivedRequest
Address string
Port uint32
GrpcServers []*testgrpcservice.TestGRPCServer
}
func (tu *TestUpstream) FailGrpcHealthCheck() *testgrpcservice.TestGRPCServer {
for _, v := range tu.GrpcServers[:len(tu.GrpcServers)-1] {
v.HealthChecker.Fail()
}
return tu.GrpcServers[len(tu.GrpcServers)-1]
}
var id = 0
func newTestUpstream(addr string, ports []uint32, responses <-chan *ReceivedRequest) *TestUpstream {
id += 1
hosts := make([]*static_plugin_gloo.Host, len(ports))
for i, port := range ports {
hosts[i] = &static_plugin_gloo.Host{
Addr: addr,
Port: port,
}
}
u := &gloov1.Upstream{
Metadata: &core.Metadata{
Name: fmt.Sprintf("local-test-upstream-%d", id),
Namespace: "default",
},
UpstreamType: &gloov1.Upstream_Static{
Static: &static_plugin_gloo.UpstreamSpec{
Hosts: hosts,
},
},
}
return &TestUpstream{
Upstream: u,
C: responses,
Port: ports[0],
}
}
func runTestServer(ctx context.Context, reply string, serveTls bool) (uint32, <-chan *ReceivedRequest) {
return runTestServerWithHealthReply(ctx, reply, "OK", serveTls)
}
func runTestServerWithHealthReply(ctx context.Context, reply, healthReply string, serveTls bool) (uint32, <-chan *ReceivedRequest) {
bodyChan := make(chan *ReceivedRequest, 100)
handlerFunc := func(rw http.ResponseWriter, r *http.Request) {
var rr ReceivedRequest
rr.Method = r.Method
var body []byte
if r.Body != nil {
body, _ = ioutil.ReadAll(r.Body)
_ = r.Body.Close()
if len(body) != 0 {
rr.Body = body
}
}
if reply != "" {
_, _ = rw.Write([]byte(reply))
} else if body != nil {
_, _ = rw.Write(body)
}
rr.Host = r.Host
rr.URL = r.URL
rr.Headers = r.Header
bodyChan <- &rr
}
listener, err := net.Listen("tcp", ":0")
if err != nil {
panic(err)
}
addr := listener.Addr().String()
_, portStr, err := net.SplitHostPort(addr)
if err != nil {
panic(err)
}
port, err := strconv.Atoi(portStr)
if err != nil {
panic(err)
}
mux := http.NewServeMux()
mux.Handle("/", http.HandlerFunc(handlerFunc))
mux.Handle("/health", http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
rw.Write([]byte(healthReply))
}))
go func() {
defer GinkgoRecover()
h := &http.Server{Handler: mux}
if serveTls {
certs, err := tls.X509KeyPair([]byte(helpers.Certificate()), []byte(helpers.PrivateKey()))
if err != nil {
Expect(err).NotTo(HaveOccurred())
}
listener = tls.NewListener(listener, &tls.Config{
Certificates: []tls.Certificate{certs},
})
}
go func() {
defer GinkgoRecover()
if err := h.Serve(listener); err != nil {
if err != http.ErrServerClosed {
panic(err)
}
}
}()
<-ctx.Done()
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)
_ = h.Shutdown(ctx)
cancel()
// close channel, the http handler may panic but this should be caught by the http code.
close(bodyChan)
}()
return uint32(port), bodyChan
}
func TestUpstreamReachable(envoyPort uint32, tu *TestUpstream, rootca *string) {
TestUpstreamReachableWithOffset(2, envoyPort, tu, rootca)
}
func TestUpstreamReachableWithOffset(offset int, envoyPort uint32, tu *TestUpstream, rootca *string) {
body := []byte("solo.io test")
ExpectHttpOK(body, rootca, envoyPort, "")
timeout := time.After(15 * time.Second)
var receivedRequest *ReceivedRequest
for {
select {
case <-timeout:
if receivedRequest != nil {
fmt.Fprintf(GinkgoWriter, "last received request: %v", *receivedRequest)
}
Fail("timeout testing upstream reachability")
case receivedRequest = <-tu.C:
if receivedRequest.Method == "POST" &&
bytes.Equal(receivedRequest.Body, body) {
return
}
}
}
}
func ExpectHttpOK(body []byte, rootca *string, envoyPort uint32, response string) {
ExpectHttpOKWithOffset(1, body, rootca, envoyPort, response)
}
func ExpectHttpOKWithOffset(offset int, body []byte, rootca *string, envoyPort uint32, response string) {
ExpectHttpStatusWithOffset(offset+1, body, rootca, envoyPort, response, http.StatusOK)
}
func ExpectHttpUnavailableWithOffset(offset int, body []byte, rootca *string, envoyPort uint32, response string) {
ExpectHttpStatusWithOffset(offset+1, body, rootca, envoyPort, response, http.StatusServiceUnavailable)
}
func ExpectHttpStatusWithOffset(offset int, body []byte, rootca *string, envoyPort uint32, response string, status int) {
var res *http.Response
EventuallyWithOffset(2, func() error {
// send a request with a body
var buf bytes.Buffer
buf.Write(body)
var client http.Client
scheme := "http"
if rootca != nil {
scheme = "https"
caCertPool := x509.NewCertPool()
ok := caCertPool.AppendCertsFromPEM([]byte(*rootca))
if !ok {
return fmt.Errorf("ca cert is not OK")
}
client.Transport = &http.Transport{
TLSClientConfig: &tls.Config{
RootCAs: caCertPool,
InsecureSkipVerify: true,
},
}
}
var err error
res, err = client.Post(fmt.Sprintf("%s://%s:%d/1", scheme, "localhost", envoyPort), "application/octet-stream", &buf)
if err != nil {
return err
}
if res.StatusCode != status {
return fmt.Errorf("received status code (%v) is not expected status code (%v)", res.StatusCode, status)
}
return nil
}, "30s", "1s").Should(BeNil())
if response != "" {
body, err := ioutil.ReadAll(res.Body)
ExpectWithOffset(offset, err).NotTo(HaveOccurred())
defer res.Body.Close()
ExpectWithOffset(offset, string(body)).To(Equal(response))
}
}
func ExpectGrpcHealthOK(rootca *string, envoyPort uint32, service string) {
EventuallyWithOffset(2, func() error {
// send a request with a body
opts := []grpc.DialOption{grpc.WithBlock()}
if rootca != nil {
caCertPool := x509.NewCertPool()
ok := caCertPool.AppendCertsFromPEM([]byte(*rootca))
if !ok {
Fail("ca cert is not OK")
}
creds := credentials.NewTLS(&tls.Config{
ClientCAs: caCertPool,
InsecureSkipVerify: true,
})
opts = append(opts, grpc.WithTransportCredentials(creds))
} else {
opts = append(opts, grpc.WithInsecure())
}
conn, err := grpc.Dial(fmt.Sprintf("%s:%d", "localhost", envoyPort), opts...)
ExpectWithOffset(2, err).NotTo(HaveOccurred())
defer conn.Close()
c := healthpb.NewHealthClient(conn)
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
resp, err := c.Check(ctx, &healthpb.HealthCheckRequest{Service: service})
cancel()
if err != nil {
return err
}
if resp.GetStatus() != healthpb.HealthCheckResponse_SERVING {
return fmt.Errorf("%v is not SERVING", resp.GetStatus())
}
return nil
}, "30s", "1s").Should(BeNil())
}