traefik/server/server_test.go

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package server
import (
"fmt"
"net/http"
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"net/http/httptest"
"net/url"
"reflect"
"testing"
"time"
"github.com/containous/flaeg"
"github.com/containous/mux"
"github.com/containous/traefik/configuration"
"github.com/containous/traefik/healthcheck"
"github.com/containous/traefik/metrics"
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"github.com/containous/traefik/middlewares"
"github.com/containous/traefik/testhelpers"
"github.com/containous/traefik/types"
"github.com/davecgh/go-spew/spew"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/urfave/negroni"
"github.com/vulcand/oxy/roundrobin"
)
type testLoadBalancer struct{}
func (lb *testLoadBalancer) RemoveServer(u *url.URL) error {
return nil
}
func (lb *testLoadBalancer) UpsertServer(u *url.URL, options ...roundrobin.ServerOption) error {
return nil
}
func (lb *testLoadBalancer) Servers() []*url.URL {
return []*url.URL{}
}
func TestPrepareServerTimeouts(t *testing.T) {
tests := []struct {
desc string
globalConfig configuration.GlobalConfiguration
wantIdleTimeout time.Duration
wantReadTimeout time.Duration
wantWriteTimeout time.Duration
}{
{
desc: "full configuration",
globalConfig: configuration.GlobalConfiguration{
RespondingTimeouts: &configuration.RespondingTimeouts{
IdleTimeout: flaeg.Duration(10 * time.Second),
ReadTimeout: flaeg.Duration(12 * time.Second),
WriteTimeout: flaeg.Duration(14 * time.Second),
},
},
wantIdleTimeout: time.Duration(10 * time.Second),
wantReadTimeout: time.Duration(12 * time.Second),
wantWriteTimeout: time.Duration(14 * time.Second),
},
{
desc: "using defaults",
globalConfig: configuration.GlobalConfiguration{},
wantIdleTimeout: time.Duration(180 * time.Second),
wantReadTimeout: time.Duration(0 * time.Second),
wantWriteTimeout: time.Duration(0 * time.Second),
},
{
desc: "deprecated IdleTimeout configured",
globalConfig: configuration.GlobalConfiguration{
IdleTimeout: flaeg.Duration(45 * time.Second),
},
wantIdleTimeout: time.Duration(45 * time.Second),
wantReadTimeout: time.Duration(0 * time.Second),
wantWriteTimeout: time.Duration(0 * time.Second),
},
{
desc: "deprecated and new IdleTimeout configured",
globalConfig: configuration.GlobalConfiguration{
IdleTimeout: flaeg.Duration(45 * time.Second),
RespondingTimeouts: &configuration.RespondingTimeouts{
IdleTimeout: flaeg.Duration(80 * time.Second),
},
},
wantIdleTimeout: time.Duration(80 * time.Second),
wantReadTimeout: time.Duration(0 * time.Second),
wantWriteTimeout: time.Duration(0 * time.Second),
},
}
for _, test := range tests {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
entryPointName := "http"
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entryPoint := &configuration.EntryPoint{Address: "localhost:0"}
router := middlewares.NewHandlerSwitcher(mux.NewRouter())
srv := NewServer(test.globalConfig)
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httpServer, _, err := srv.prepareServer(entryPointName, entryPoint, router)
if err != nil {
t.Fatalf("Unexpected error when preparing srv: %s", err)
}
if httpServer.IdleTimeout != test.wantIdleTimeout {
t.Errorf("Got %s as IdleTimeout, want %s", httpServer.IdleTimeout, test.wantIdleTimeout)
}
if httpServer.ReadTimeout != test.wantReadTimeout {
t.Errorf("Got %s as ReadTimeout, want %s", httpServer.ReadTimeout, test.wantReadTimeout)
}
if httpServer.WriteTimeout != test.wantWriteTimeout {
t.Errorf("Got %s as WriteTimeout, want %s", httpServer.WriteTimeout, test.wantWriteTimeout)
}
})
}
}
func TestServerMultipleFrontendRules(t *testing.T) {
cases := []struct {
expression string
requestURL string
expectedURL string
}{
{
expression: "Host:foo.bar",
requestURL: "http://foo.bar",
expectedURL: "http://foo.bar",
},
{
expression: "PathPrefix:/management;ReplacePath:/health",
requestURL: "http://foo.bar/management",
expectedURL: "http://foo.bar/health",
},
{
expression: "Host:foo.bar;AddPrefix:/blah",
requestURL: "http://foo.bar/baz",
expectedURL: "http://foo.bar/blah/baz",
},
{
expression: "PathPrefixStripRegex:/one/{two}/{three:[0-9]+}",
requestURL: "http://foo.bar/one/some/12345/four",
expectedURL: "http://foo.bar/four",
},
{
expression: "PathPrefixStripRegex:/one/{two}/{three:[0-9]+};AddPrefix:/zero",
requestURL: "http://foo.bar/one/some/12345/four",
expectedURL: "http://foo.bar/zero/four",
},
{
expression: "AddPrefix:/blah;ReplacePath:/baz",
requestURL: "http://foo.bar/hello",
expectedURL: "http://foo.bar/baz",
},
{
expression: "PathPrefixStrip:/management;ReplacePath:/health",
requestURL: "http://foo.bar/management",
expectedURL: "http://foo.bar/health",
},
}
for _, test := range cases {
test := test
t.Run(test.expression, func(t *testing.T) {
t.Parallel()
router := mux.NewRouter()
route := router.NewRoute()
serverRoute := &serverRoute{route: route}
rules := &Rules{route: serverRoute}
expression := test.expression
routeResult, err := rules.Parse(expression)
if err != nil {
t.Fatalf("Error while building route for %s: %+v", expression, err)
}
request := testhelpers.MustNewRequest(http.MethodGet, test.requestURL, nil)
routeMatch := routeResult.Match(request, &mux.RouteMatch{Route: routeResult})
if !routeMatch {
t.Fatalf("Rule %s doesn't match", expression)
}
server := new(Server)
server.wireFrontendBackend(serverRoute, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
if r.URL.String() != test.expectedURL {
t.Fatalf("got URL %s, expected %s", r.URL.String(), test.expectedURL)
}
}))
serverRoute.route.GetHandler().ServeHTTP(nil, request)
})
}
}
func TestServerLoadConfigHealthCheckOptions(t *testing.T) {
healthChecks := []*types.HealthCheck{
nil,
{
Path: "/path",
},
}
for _, lbMethod := range []string{"Wrr", "Drr"} {
for _, healthCheck := range healthChecks {
t.Run(fmt.Sprintf("%s/hc=%t", lbMethod, healthCheck != nil), func(t *testing.T) {
globalConfig := configuration.GlobalConfiguration{
EntryPoints: configuration.EntryPoints{
"http": &configuration.EntryPoint{},
},
HealthCheck: &configuration.HealthCheckConfig{Interval: flaeg.Duration(5 * time.Second)},
}
dynamicConfigs := types.Configurations{
"config": &types.Configuration{
Frontends: map[string]*types.Frontend{
"frontend": {
EntryPoints: []string{"http"},
Backend: "backend",
},
},
Backends: map[string]*types.Backend{
"backend": {
Servers: map[string]types.Server{
"server": {
URL: "http://localhost",
},
},
LoadBalancer: &types.LoadBalancer{
Method: lbMethod,
},
HealthCheck: healthCheck,
},
},
},
}
srv := NewServer(globalConfig)
if _, err := srv.loadConfig(dynamicConfigs, globalConfig); err != nil {
t.Fatalf("got error: %s", err)
}
wantNumHealthCheckBackends := 0
if healthCheck != nil {
wantNumHealthCheckBackends = 1
}
gotNumHealthCheckBackends := len(healthcheck.GetHealthCheck().Backends)
if gotNumHealthCheckBackends != wantNumHealthCheckBackends {
t.Errorf("got %d health check backends, want %d", gotNumHealthCheckBackends, wantNumHealthCheckBackends)
}
})
}
}
}
func TestServerParseHealthCheckOptions(t *testing.T) {
lb := &testLoadBalancer{}
globalInterval := 15 * time.Second
tests := []struct {
desc string
hc *types.HealthCheck
wantOpts *healthcheck.Options
}{
{
desc: "nil health check",
hc: nil,
wantOpts: nil,
},
{
desc: "empty path",
hc: &types.HealthCheck{
Path: "",
},
wantOpts: nil,
},
{
desc: "unparseable interval",
hc: &types.HealthCheck{
Path: "/path",
Interval: "unparseable",
},
wantOpts: &healthcheck.Options{
Path: "/path",
Interval: globalInterval,
LB: lb,
},
},
{
desc: "sub-zero interval",
hc: &types.HealthCheck{
Path: "/path",
Interval: "-42s",
},
wantOpts: &healthcheck.Options{
Path: "/path",
Interval: globalInterval,
LB: lb,
},
},
{
desc: "parseable interval",
hc: &types.HealthCheck{
Path: "/path",
Interval: "5m",
},
wantOpts: &healthcheck.Options{
Path: "/path",
Interval: 5 * time.Minute,
LB: lb,
},
},
}
for _, test := range tests {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
gotOpts := parseHealthCheckOptions(lb, "backend", test.hc, &configuration.HealthCheckConfig{Interval: flaeg.Duration(globalInterval)})
if !reflect.DeepEqual(gotOpts, test.wantOpts) {
t.Errorf("got health check options %+v, want %+v", gotOpts, test.wantOpts)
}
})
}
}
func TestNewServerWithWhitelistSourceRange(t *testing.T) {
cases := []struct {
desc string
whitelistStrings []string
middlewareConfigured bool
errMessage string
}{
{
desc: "no whitelists configued",
whitelistStrings: nil,
middlewareConfigured: false,
errMessage: "",
}, {
desc: "whitelists configued",
whitelistStrings: []string{
"1.2.3.4/24",
"fe80::/16",
},
middlewareConfigured: true,
errMessage: "",
}, {
desc: "invalid whitelists configued",
whitelistStrings: []string{
"foo",
},
middlewareConfigured: false,
errMessage: "parsing CIDR whitelist <nil>: invalid CIDR address: foo",
},
}
for _, tc := range cases {
tc := tc
t.Run(tc.desc, func(t *testing.T) {
t.Parallel()
middleware, err := configureIPWhitelistMiddleware(tc.whitelistStrings)
if tc.errMessage != "" {
require.EqualError(t, err, tc.errMessage)
} else {
assert.NoError(t, err)
if tc.middlewareConfigured {
require.NotNil(t, middleware, "not expected middleware to be configured")
} else {
require.Nil(t, middleware, "expected middleware to be configured")
}
}
})
}
}
func TestServerLoadConfigEmptyBasicAuth(t *testing.T) {
globalConfig := configuration.GlobalConfiguration{
EntryPoints: configuration.EntryPoints{
"http": &configuration.EntryPoint{},
},
}
dynamicConfigs := types.Configurations{
"config": &types.Configuration{
Frontends: map[string]*types.Frontend{
"frontend": {
EntryPoints: []string{"http"},
Backend: "backend",
BasicAuth: []string{""},
},
},
Backends: map[string]*types.Backend{
"backend": {
Servers: map[string]types.Server{
"server": {
URL: "http://localhost",
},
},
LoadBalancer: &types.LoadBalancer{
Method: "Wrr",
},
},
},
},
}
srv := NewServer(globalConfig)
if _, err := srv.loadConfig(dynamicConfigs, globalConfig); err != nil {
t.Fatalf("got error: %s", err)
}
}
func TestConfigureBackends(t *testing.T) {
validMethod := "Drr"
defaultMethod := "wrr"
tests := []struct {
desc string
lb *types.LoadBalancer
wantMethod string
wantSticky bool
}{
{
desc: "valid load balancer method with sticky enabled",
lb: &types.LoadBalancer{
Method: validMethod,
Sticky: true,
},
wantMethod: validMethod,
wantSticky: true,
},
{
desc: "valid load balancer method with sticky disabled",
lb: &types.LoadBalancer{
Method: validMethod,
Sticky: false,
},
wantMethod: validMethod,
wantSticky: false,
},
{
desc: "invalid load balancer method with sticky enabled",
lb: &types.LoadBalancer{
Method: "Invalid",
Sticky: true,
},
wantMethod: defaultMethod,
wantSticky: true,
},
{
desc: "invalid load balancer method with sticky disabled",
lb: &types.LoadBalancer{
Method: "Invalid",
Sticky: false,
},
wantMethod: defaultMethod,
wantSticky: false,
},
{
desc: "missing load balancer",
lb: nil,
wantMethod: defaultMethod,
wantSticky: false,
},
}
for _, test := range tests {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
backend := &types.Backend{
LoadBalancer: test.lb,
}
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srv := Server{}
srv.configureBackends(map[string]*types.Backend{
"backend": backend,
})
wantLB := types.LoadBalancer{
Method: test.wantMethod,
Sticky: test.wantSticky,
}
if !reflect.DeepEqual(*backend.LoadBalancer, wantLB) {
t.Errorf("got backend load-balancer\n%v\nwant\n%v\n", spew.Sdump(backend.LoadBalancer), spew.Sdump(wantLB))
}
})
}
}
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func TestServerEntrypointWhitelistConfig(t *testing.T) {
tests := []struct {
desc string
entrypoint *configuration.EntryPoint
wantMiddleware bool
}{
{
desc: "no whitelist middleware if no config on entrypoint",
entrypoint: &configuration.EntryPoint{
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Address: ":0",
},
wantMiddleware: false,
},
{
desc: "whitelist middleware should be added if configured on entrypoint",
entrypoint: &configuration.EntryPoint{
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Address: ":0",
WhitelistSourceRange: []string{
"127.0.0.1/32",
},
},
wantMiddleware: true,
},
}
for _, test := range tests {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
srv := Server{
globalConfiguration: configuration.GlobalConfiguration{
EntryPoints: map[string]*configuration.EntryPoint{
"test": test.entrypoint,
},
},
metricsRegistry: metrics.NewVoidRegistry(),
}
srv.serverEntryPoints = srv.buildEntryPoints(srv.globalConfiguration)
srvEntryPoint := srv.setupServerEntryPoint("test", srv.serverEntryPoints["test"])
handler := srvEntryPoint.httpServer.Handler.(*negroni.Negroni)
found := false
for _, handler := range handler.Handlers() {
if reflect.TypeOf(handler) == reflect.TypeOf((*middlewares.IPWhitelister)(nil)) {
found = true
}
}
if found && !test.wantMiddleware {
t.Errorf("ip whitelist middleware was installed even though it should not")
}
if !found && test.wantMiddleware {
t.Errorf("ip whitelist middleware was not installed even though it should have")
}
})
}
}
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func TestServerResponseEmptyBackend(t *testing.T) {
const requestPath = "/path"
const routeRule = "Path:" + requestPath
testCases := []struct {
desc string
dynamicConfig func(testServerURL string) *types.Configuration
wantStatusCode int
}{
{
desc: "Ok",
dynamicConfig: func(testServerURL string) *types.Configuration {
return buildDynamicConfig(
withFrontend("frontend", buildFrontend(withRoute(requestPath, routeRule))),
withBackend("backend", buildBackend(withServer("testServer", testServerURL))),
)
},
wantStatusCode: http.StatusOK,
},
{
desc: "No Frontend",
dynamicConfig: func(testServerURL string) *types.Configuration {
return buildDynamicConfig()
},
wantStatusCode: http.StatusNotFound,
},
{
desc: "Empty Backend LB-Drr",
dynamicConfig: func(testServerURL string) *types.Configuration {
return buildDynamicConfig(
withFrontend("frontend", buildFrontend(withRoute(requestPath, routeRule))),
withBackend("backend", buildBackend(withLoadBalancer("Drr", false))),
)
},
wantStatusCode: http.StatusServiceUnavailable,
},
{
desc: "Empty Backend LB-Drr Sticky",
dynamicConfig: func(testServerURL string) *types.Configuration {
return buildDynamicConfig(
withFrontend("frontend", buildFrontend(withRoute(requestPath, routeRule))),
withBackend("backend", buildBackend(withLoadBalancer("Drr", true))),
)
},
wantStatusCode: http.StatusServiceUnavailable,
},
{
desc: "Empty Backend LB-Wrr",
dynamicConfig: func(testServerURL string) *types.Configuration {
return buildDynamicConfig(
withFrontend("frontend", buildFrontend(withRoute(requestPath, routeRule))),
withBackend("backend", buildBackend(withLoadBalancer("Wrr", false))),
)
},
wantStatusCode: http.StatusServiceUnavailable,
},
{
desc: "Empty Backend LB-Wrr Sticky",
dynamicConfig: func(testServerURL string) *types.Configuration {
return buildDynamicConfig(
withFrontend("frontend", buildFrontend(withRoute(requestPath, routeRule))),
withBackend("backend", buildBackend(withLoadBalancer("Wrr", true))),
)
},
wantStatusCode: http.StatusServiceUnavailable,
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
testServer := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
rw.WriteHeader(http.StatusOK)
}))
defer testServer.Close()
globalConfig := configuration.GlobalConfiguration{
EntryPoints: configuration.EntryPoints{
"http": &configuration.EntryPoint{},
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},
}
dynamicConfigs := types.Configurations{"config": test.dynamicConfig(testServer.URL)}
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srv := NewServer(globalConfig)
entryPoints, err := srv.loadConfig(dynamicConfigs, globalConfig)
if err != nil {
t.Fatalf("error loading config: %s", err)
}
responseRecorder := &httptest.ResponseRecorder{}
request := httptest.NewRequest(http.MethodGet, testServer.URL+requestPath, nil)
entryPoints["http"].httpRouter.ServeHTTP(responseRecorder, request)
if responseRecorder.Result().StatusCode != test.wantStatusCode {
t.Errorf("got status code %d, want %d", responseRecorder.Result().StatusCode, test.wantStatusCode)
}
})
}
}
func buildDynamicConfig(dynamicConfigBuilders ...func(*types.Configuration)) *types.Configuration {
config := &types.Configuration{
Frontends: make(map[string]*types.Frontend),
Backends: make(map[string]*types.Backend),
}
for _, build := range dynamicConfigBuilders {
build(config)
}
return config
}
func withFrontend(frontendName string, frontend *types.Frontend) func(*types.Configuration) {
return func(config *types.Configuration) {
config.Frontends[frontendName] = frontend
}
}
func withBackend(backendName string, backend *types.Backend) func(*types.Configuration) {
return func(config *types.Configuration) {
config.Backends[backendName] = backend
}
}
func buildFrontend(frontendBuilders ...func(*types.Frontend)) *types.Frontend {
fe := &types.Frontend{
EntryPoints: []string{"http"},
Backend: "backend",
Routes: make(map[string]types.Route),
}
for _, build := range frontendBuilders {
build(fe)
}
return fe
}
func withRoute(routeName, rule string) func(*types.Frontend) {
return func(fe *types.Frontend) {
fe.Routes[routeName] = types.Route{Rule: rule}
}
}
func buildBackend(backendBuilders ...func(*types.Backend)) *types.Backend {
be := &types.Backend{
Servers: make(map[string]types.Server),
LoadBalancer: &types.LoadBalancer{Method: "Wrr"},
}
for _, build := range backendBuilders {
build(be)
}
return be
}
func withServer(name, url string) func(backend *types.Backend) {
return func(be *types.Backend) {
be.Servers[name] = types.Server{URL: url}
}
}
func withLoadBalancer(method string, sticky bool) func(*types.Backend) {
return func(be *types.Backend) {
be.LoadBalancer = &types.LoadBalancer{Method: method, Sticky: sticky}
}
}