discoveryconfig_test.go

/*
Copyright 2023 Gravitational, Inc.

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 web

import (
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"net/url"
	"testing"

	"github.com/google/uuid"
	"github.com/stretchr/testify/require"

	"github.com/gravitational/teleport/api/types"
	"github.com/gravitational/teleport/lib/services"
	"github.com/gravitational/teleport/lib/web/ui"
)

func TestDiscoveryConfig(t *testing.T) {
	t.Parallel()

	ctx := context.Background()

	env := newWebPack(t, 1)
	clusterName := env.server.ClusterName()

	username := uuid.NewString()
	roleRWDiscoveryConfig, err := types.NewRole(
		services.RoleNameForUser(username), types.RoleSpecV6{
			Allow: types.RoleConditions{Rules: []types.Rule{{
				Resources: []string{types.KindDiscoveryConfig},
				Verbs:     services.RW(),
			}}},
		})
	require.NoError(t, err)
	pack := env.proxies[0].authPack(t, username, []types.Role{roleRWDiscoveryConfig})

	getAllEndpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig")
	t.Run("Get All should return an empty list", func(t *testing.T) {
		resp, err := pack.clt.Get(ctx, getAllEndpoint, nil)
		require.NoError(t, err)
		require.Equal(t, http.StatusOK, resp.Code())

		var listResponse ui.DiscoveryConfigsListResponse
		err = json.Unmarshal(resp.Bytes(), &listResponse)
		require.NoError(t, err)
		require.Empty(t, listResponse.NextKey)
		require.Empty(t, listResponse.Items)
	})

	createEndpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig")
	t.Run("Create without a name must fai", func(t *testing.T) {
		resp, err := pack.clt.PostJSON(ctx, createEndpoint, ui.DiscoveryConfig{
			DiscoveryGroup: "dg01",
		})
		require.ErrorContains(t, err, "missing discovery config name")
		require.Equal(t, http.StatusBadRequest, resp.Code())
	})

	t.Run("Create without a group must fail", func(t *testing.T) {
		resp, err := pack.clt.PostJSON(ctx, createEndpoint, ui.DiscoveryConfig{
			Name: "dc01",
		})
		require.ErrorContains(t, err, "missing discovery group")
		require.Equal(t, http.StatusBadRequest, resp.Code())
	})

	t.Run("Get One must return not found when it doesn't exist", func(t *testing.T) {
		getDC02Endpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig", "dc02")
		resp, err := pack.clt.Get(ctx, getDC02Endpoint, nil)
		require.ErrorContains(t, err, "doesn't exist")
		require.Equal(t, http.StatusNotFound, resp.Code())
	})

	t.Run("Create valid", func(t *testing.T) {
		resp, err := pack.clt.PostJSON(ctx, createEndpoint, ui.DiscoveryConfig{
			Name:           "dc01",
			DiscoveryGroup: "dg01",
		})
		require.NoError(t, err)
		require.Equal(t, http.StatusOK, resp.Code())

		t.Run("Create fails when name already exists", func(t *testing.T) {
			resp, err := pack.clt.PostJSON(ctx, createEndpoint, ui.DiscoveryConfig{
				Name:           "dc01",
				DiscoveryGroup: "dg01",
			})
			require.ErrorContains(t, err, "already exists")
			require.Equal(t, http.StatusConflict, resp.Code())
		})

		getDC01Endpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig", "dc01")
		t.Run("Get one", func(t *testing.T) {
			resp, err := pack.clt.Get(ctx, getDC01Endpoint, nil)
			require.NoError(t, err)
			require.Equal(t, http.StatusOK, resp.Code())

			var discoveryConfigResp ui.DiscoveryConfig
			err = json.Unmarshal(resp.Bytes(), &discoveryConfigResp)
			require.NoError(t, err)
			require.Equal(t, "dg01", discoveryConfigResp.DiscoveryGroup)
			require.Equal(t, "dc01", discoveryConfigResp.Name)
		})

		t.Run("Update discovery config", func(t *testing.T) {
			updateDC01Endpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig", "dc01")
			resp, err = pack.clt.PutJSON(ctx, updateDC01Endpoint, ui.UpdateDiscoveryConfigRequest{
				DiscoveryGroup: "dgAA",
			})
			require.NoError(t, err)
			require.Equal(t, http.StatusOK, resp.Code())

			resp, err = pack.clt.Get(ctx, getDC01Endpoint, nil)
			require.NoError(t, err)
			require.Equal(t, http.StatusOK, resp.Code())

			var discoveryConfigResp ui.DiscoveryConfig
			err = json.Unmarshal(resp.Bytes(), &discoveryConfigResp)
			require.NoError(t, err)
			require.Equal(t, "dgAA", discoveryConfigResp.DiscoveryGroup)
			require.Equal(t, "dc01", discoveryConfigResp.Name)
		})

		t.Run("Delete discovery config", func(t *testing.T) {
			deleteDC01Endpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig", "dc01")
			resp, err = pack.clt.Delete(ctx, deleteDC01Endpoint)
			require.NoError(t, err)
			require.Equal(t, http.StatusOK, resp.Code())

			t.Run("Get All should return an empty list", func(t *testing.T) {
				resp, err := pack.clt.Get(ctx, getAllEndpoint, nil)
				require.NoError(t, err)
				require.Equal(t, http.StatusOK, resp.Code())

				var listResponse ui.DiscoveryConfigsListResponse
				err = json.Unmarshal(resp.Bytes(), &listResponse)
				require.NoError(t, err)
				require.Empty(t, listResponse.NextKey)
				require.Empty(t, listResponse.Items)
			})
		})
	})

	t.Run("Update must fail when discovery group is not present", func(t *testing.T) {
		updateDC01Endpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig", "dc01")
		resp, err := pack.clt.PutJSON(ctx, updateDC01Endpoint, ui.UpdateDiscoveryConfigRequest{
			DiscoveryGroup: "",
		})
		require.ErrorContains(t, err, "missing discovery group")
		require.Equal(t, http.StatusBadRequest, resp.Code())
	})

	t.Run("Update must return not found when it doesn't exist", func(t *testing.T) {
		updateDC02Endpoint := pack.clt.Endpoint("webapi", "sites", clusterName, "discoveryconfig", "dc02")
		resp, err := pack.clt.PutJSON(ctx, updateDC02Endpoint, ui.UpdateDiscoveryConfigRequest{
			DiscoveryGroup: "dg01",
		})
		require.ErrorContains(t, err, "doesn't exist")
		require.Equal(t, http.StatusNotFound, resp.Code())
	})

	t.Run("Create multiple and then list all of them", func(t *testing.T) {
		listTestCount := 54
		for i := 0; i < listTestCount; i++ {
			resp, err := pack.clt.PostJSON(ctx, createEndpoint, ui.DiscoveryConfig{
				Name:           fmt.Sprintf("dc-%d", i),
				DiscoveryGroup: "dg01",
			})
			require.NoError(t, err)
			require.Equal(t, http.StatusOK, resp.Code())
		}
		uniqDC := make(map[string]struct{}, listTestCount)
		iterationsCount := listTestCount / 5
		startKey := ""
		for {
			// Add a small limit page to test iteration.
			resp, err := pack.clt.Get(ctx, getAllEndpoint, url.Values{
				"limit":    []string{"5"},
				"startKey": []string{startKey},
			})
			require.NoError(t, err)
			require.Equal(t, http.StatusOK, resp.Code())

			var listResponse ui.DiscoveryConfigsListResponse
			err = json.Unmarshal(resp.Bytes(), &listResponse)
			require.NoError(t, err)
			for _, item := range listResponse.Items {
				uniqDC[item.Name] = struct{}{}
			}
			if listResponse.NextKey == "" {
				break
			}
			iterationsCount--
			require.NotEmpty(t, listResponse.NextKey)
			startKey = listResponse.NextKey
		}
		require.Equal(t, listTestCount, len(uniqDC))
		require.Zero(t, iterationsCount, "invalid number of iterations")
	})
}