open-consul/agent/uiserver/uiserver_test.go

454 lines
12 KiB
Go

package uiserver
import (
"bytes"
"io"
"io/ioutil"
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"strings"
"testing"
"github.com/hashicorp/go-hclog"
"github.com/stretchr/testify/require"
"golang.org/x/net/html"
"github.com/hashicorp/consul/agent/config"
"github.com/hashicorp/consul/sdk/testutil"
)
func TestUIServerIndex(t *testing.T) {
cases := []struct {
name string
cfg *config.RuntimeConfig
path string
tx UIDataTransform
wantStatus int
wantContains []string
wantNotContains []string
wantEnv map[string]interface{}
wantUICfgJSON string
}{
{
name: "basic UI serving",
cfg: basicUIEnabledConfig(),
path: "/", // Note /index.html redirects to /
wantStatus: http.StatusOK,
wantContains: []string{"<!-- CONSUL_VERSION:"},
wantUICfgJSON: `{
"ACLsEnabled": false,
"LocalDatacenter": "dc1",
"PrimaryDatacenter": "dc1",
"ContentPath": "/ui/",
"UIConfig": {
"hcp_enabled": false,
"metrics_provider": "",
"metrics_proxy_enabled": false,
"dashboard_url_templates": null
}
}`,
},
{
// We do this redirect just for UI dir since the app is a single page app
// and any URL under the path should just load the index and let Ember do
// it's thing unless it's a specific asset URL in the filesystem.
name: "unknown paths to serve index",
cfg: basicUIEnabledConfig(),
path: "/foo-bar-bazz-qux",
wantStatus: http.StatusOK,
wantContains: []string{"<!-- CONSUL_VERSION:"},
},
{
name: "injecting metrics vars",
cfg: basicUIEnabledConfig(
withMetricsProvider("foo"),
withMetricsProviderOptions(`{"a-very-unlikely-string":1}`),
),
path: "/",
wantStatus: http.StatusOK,
wantContains: []string{
"<!-- CONSUL_VERSION:",
},
wantUICfgJSON: `{
"ACLsEnabled": false,
"LocalDatacenter": "dc1",
"PrimaryDatacenter": "dc1",
"ContentPath": "/ui/",
"UIConfig": {
"hcp_enabled": false,
"metrics_provider": "foo",
"metrics_provider_options": {
"a-very-unlikely-string":1
},
"metrics_proxy_enabled": false,
"dashboard_url_templates": null
}
}`,
},
{
name: "acls enabled",
cfg: basicUIEnabledConfig(withACLs()),
path: "/",
wantStatus: http.StatusOK,
wantContains: []string{"<!-- CONSUL_VERSION:"},
wantUICfgJSON: `{
"ACLsEnabled": true,
"LocalDatacenter": "dc1",
"PrimaryDatacenter": "dc1",
"ContentPath": "/ui/",
"UIConfig": {
"hcp_enabled": false,
"metrics_provider": "",
"metrics_proxy_enabled": false,
"dashboard_url_templates": null
}
}`,
},
{
name: "hcp enabled",
cfg: basicUIEnabledConfig(withHCPEnabled()),
path: "/",
wantStatus: http.StatusOK,
wantContains: []string{"<!-- CONSUL_VERSION:"},
wantUICfgJSON: `{
"ACLsEnabled": false,
"LocalDatacenter": "dc1",
"PrimaryDatacenter": "dc1",
"ContentPath": "/ui/",
"UIConfig": {
"hcp_enabled": true,
"metrics_provider": "",
"metrics_proxy_enabled": false,
"dashboard_url_templates": null
}
}`,
},
{
name: "external transformation",
cfg: basicUIEnabledConfig(
withMetricsProvider("foo"),
),
path: "/",
tx: func(data map[string]interface{}) error {
data["SSOEnabled"] = true
o := data["UIConfig"].(map[string]interface{})
o["metrics_provider"] = "bar"
return nil
},
wantStatus: http.StatusOK,
wantContains: []string{
"<!-- CONSUL_VERSION:",
},
wantUICfgJSON: `{
"ACLsEnabled": false,
"SSOEnabled": true,
"LocalDatacenter": "dc1",
"PrimaryDatacenter": "dc1",
"ContentPath": "/ui/",
"UIConfig": {
"hcp_enabled": false,
"metrics_provider": "bar",
"metrics_proxy_enabled": false,
"dashboard_url_templates": null
}
}`,
},
{
name: "serving metrics provider js",
cfg: basicUIEnabledConfig(
withMetricsProvider("foo"),
withMetricsProviderFiles("testdata/foo.js", "testdata/bar.js"),
),
path: "/",
wantStatus: http.StatusOK,
wantContains: []string{
"<!-- CONSUL_VERSION:",
`<script src="/ui/assets/compiled-metrics-providers.js">`,
},
},
}
for _, tc := range cases {
tc := tc
t.Run(tc.name, func(t *testing.T) {
h := NewHandler(tc.cfg, testutil.Logger(t), tc.tx)
req := httptest.NewRequest("GET", tc.path, nil)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, tc.wantStatus, rec.Code)
for _, want := range tc.wantContains {
require.Contains(t, rec.Body.String(), want)
}
if tc.wantUICfgJSON != "" {
require.JSONEq(t, tc.wantUICfgJSON, extractUIConfig(t, rec.Body.String()))
}
})
}
}
func extractApplicationJSON(t *testing.T, attrName, content string) string {
t.Helper()
var scriptContent *html.Node
var find func(node *html.Node)
// Recurse down the tree and pick out <script attrName=ourAttrName>
find = func(node *html.Node) {
if node.Type == html.ElementNode && node.Data == "script" {
for i := 0; i < len(node.Attr); i++ {
attr := node.Attr[i]
if attr.Key == attrName {
// find the script and save off the content, which in this case is
// the JSON we are looking for, once we have it finish up
scriptContent = node.FirstChild
return
}
}
}
for child := node.FirstChild; child != nil; child = child.NextSibling {
find(child)
}
}
doc, err := html.Parse(strings.NewReader(content))
require.NoError(t, err)
find(doc)
var buf bytes.Buffer
w := io.Writer(&buf)
renderErr := html.Render(w, scriptContent)
require.NoError(t, renderErr)
jsonStr := html.UnescapeString(buf.String())
return jsonStr
}
func extractUIConfig(t *testing.T, content string) string {
t.Helper()
return extractApplicationJSON(t, "data-consul-ui-config", content)
}
type cfgFunc func(cfg *config.RuntimeConfig)
func basicUIEnabledConfig(opts ...cfgFunc) *config.RuntimeConfig {
cfg := &config.RuntimeConfig{
UIConfig: config.UIConfig{
Enabled: true,
ContentPath: "/ui/",
},
Datacenter: "dc1",
PrimaryDatacenter: "dc1",
}
for _, f := range opts {
f(cfg)
}
return cfg
}
func withACLs() cfgFunc {
return func(cfg *config.RuntimeConfig) {
cfg.PrimaryDatacenter = "dc1"
cfg.ACLResolverSettings.ACLDefaultPolicy = "deny"
cfg.ACLsEnabled = true
}
}
func withMetricsProvider(name string) cfgFunc {
return func(cfg *config.RuntimeConfig) {
cfg.UIConfig.MetricsProvider = name
}
}
func withMetricsProviderFiles(names ...string) cfgFunc {
return func(cfg *config.RuntimeConfig) {
cfg.UIConfig.MetricsProviderFiles = names
}
}
func withMetricsProviderOptions(jsonStr string) cfgFunc {
return func(cfg *config.RuntimeConfig) {
cfg.UIConfig.MetricsProviderOptionsJSON = jsonStr
}
}
func withHCPEnabled() cfgFunc {
return func(cfg *config.RuntimeConfig) {
cfg.UIConfig.HCPEnabled = true
}
}
// TestMultipleIndexRequests validates that the buffered file mechanism works
// beyond the first request. The initial implementation did not as it shared an
// bytes.Reader between callers.
func TestMultipleIndexRequests(t *testing.T) {
h := NewHandler(basicUIEnabledConfig(), testutil.Logger(t), nil)
for i := 0; i < 3; i++ {
req := httptest.NewRequest("GET", "/", nil)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, http.StatusOK, rec.Code)
require.Contains(t, rec.Body.String(), "<!-- CONSUL_VERSION:",
"request %d didn't return expected content", i+1)
}
}
func TestReload(t *testing.T) {
h := NewHandler(basicUIEnabledConfig(), testutil.Logger(t), nil)
{
req := httptest.NewRequest("GET", "/", nil)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, http.StatusOK, rec.Code)
require.Contains(t, rec.Body.String(), "<!-- CONSUL_VERSION:")
require.NotContains(t, rec.Body.String(), "exotic-metrics-provider-name")
}
// Reload the config with the changed metrics provider name
newCfg := basicUIEnabledConfig(
withMetricsProvider("exotic-metrics-provider-name"),
)
h.ReloadConfig(newCfg)
// Now we should see the new provider name in the output of index
{
req := httptest.NewRequest("GET", "/", nil)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, http.StatusOK, rec.Code)
require.Contains(t, rec.Body.String(), "<!-- CONSUL_VERSION:")
require.Contains(t, rec.Body.String(), "exotic-metrics-provider-name")
}
}
func TestCustomDir(t *testing.T) {
uiDir := testutil.TempDir(t, "consul-uiserver")
defer os.RemoveAll(uiDir)
path := filepath.Join(uiDir, "test-file")
require.NoError(t, ioutil.WriteFile(path, []byte("test"), 0644))
cfg := basicUIEnabledConfig()
cfg.UIConfig.Dir = uiDir
h := NewHandler(cfg, testutil.Logger(t), nil)
req := httptest.NewRequest("GET", "/test-file", nil)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, http.StatusOK, rec.Code)
require.Contains(t, rec.Body.String(), "test")
}
func TestCompiledJS(t *testing.T) {
cfg := basicUIEnabledConfig(
withMetricsProvider("foo"),
withMetricsProviderFiles("testdata/foo.js", "testdata/bar.js"),
)
h := NewHandler(cfg, testutil.Logger(t), nil)
paths := []string{
"/" + compiledProviderJSPath,
// We need to work even without the initial slash because the agent uses
// http.StripPrefix with the entire ContentPath which includes a trailing
// slash. This apparently works fine for the assetFS etc. so we need to
// also tolerate it when the URL doesn't have a slash at the start of the
// path.
compiledProviderJSPath,
}
for _, path := range paths {
t.Run(path, func(t *testing.T) {
// NewRequest doesn't like paths with no leading slash but we need to test
// a request with a URL that has that so just create with root path and
// then manually modify the URL path so it emulates one that has been
// doctored by http.StripPath.
req := httptest.NewRequest("GET", "/", nil)
req.URL.Path = path
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, http.StatusOK, rec.Code)
require.Equal(t, rec.Result().Header["Content-Type"][0], "application/javascript")
wantCompiled, err := ioutil.ReadFile("testdata/compiled-metrics-providers-golden.js")
require.NoError(t, err)
require.Equal(t, rec.Body.String(), string(wantCompiled))
})
}
}
func TestHandler_ServeHTTP_TransformIsEvaluatedOnEachRequest(t *testing.T) {
cfg := basicUIEnabledConfig()
value := "seeds"
transform := func(data map[string]interface{}) error {
data["apple"] = value
return nil
}
h := NewHandler(cfg, hclog.New(nil), transform)
t.Run("initial request", func(t *testing.T) {
req := httptest.NewRequest("GET", "/", nil)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, http.StatusOK, rec.Code)
expected := `{
"ACLsEnabled": false,
"LocalDatacenter": "dc1",
"PrimaryDatacenter": "dc1",
"ContentPath": "/ui/",
"UIConfig": {
"hcp_enabled": false,
"metrics_provider": "",
"metrics_proxy_enabled": false,
"dashboard_url_templates": null
},
"apple": "seeds"
}`
require.JSONEq(t, expected, extractUIConfig(t, rec.Body.String()))
})
t.Run("transform value has changed", func(t *testing.T) {
value = "plant"
req := httptest.NewRequest("GET", "/", nil)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, req)
require.Equal(t, http.StatusOK, rec.Code)
expected := `{
"ACLsEnabled": false,
"LocalDatacenter": "dc1",
"PrimaryDatacenter": "dc1",
"ContentPath": "/ui/",
"UIConfig": {
"hcp_enabled": false,
"metrics_provider": "",
"metrics_proxy_enabled": false,
"dashboard_url_templates": null
},
"apple": "plant"
}`
require.JSONEq(t, expected, extractUIConfig(t, rec.Body.String()))
})
}