terraform-provider-stackitprivatepreview/stackit/internal/wait/sqlserverflexalpha/wait.go

package sqlserverflexalpha

import (
	"context"
	"errors"
	"fmt"
	"net/http"
	"strings"
	"time"

	"github.com/hashicorp/terraform-plugin-log/tflog"
	"github.com/stackitcloud/stackit-sdk-go/core/oapierror"
	"github.com/stackitcloud/stackit-sdk-go/core/wait"

	"github.com/stackitcloud/stackit-sdk-go/services/sqlserverflex/v3alpha1api"
)

// READY, PENDING, PROGRESSING, FAILURE, UNKNOWN,
const (
	InstanceStateEmpty       = ""
	InstanceStateSuccess     = "READY"
	InstanceStatePending     = "PENDING"
	InstanceStateProcessing  = "PROGRESSING"
	InstanceStateFailed      = "FAILURE"
	InstanceStateUnknown     = "UNKNOWN"
	InstanceStateTerminating = "TERMINATING"
)

// APIClientInterface Interface needed for tests
type APIClientInterface interface {
	GetInstanceRequest(
		ctx context.Context,
		projectId, region, instanceId string,
	) v3alpha1api.ApiGetInstanceRequestRequest

	GetDatabaseRequest(
		ctx context.Context,
		projectId string,
		region string,
		instanceId string,
		databaseName string,
	) v3alpha1api.ApiGetDatabaseRequestRequest

	GetUserRequest(
		ctx context.Context,
		projectId string,
		region string,
		instanceId string,
		userId int64,
	) v3alpha1api.ApiGetUserRequestRequest

	ListRolesRequest(
		ctx context.Context,
		projectId string,
		region string,
		instanceId string,
	) v3alpha1api.ApiListRolesRequestRequest

	ListUsersRequest(
		ctx context.Context,
		projectId string,
		region string,
		instanceId string,
	) v3alpha1api.ApiListUsersRequestRequest
}

// APIClientUserInterface Interface needed for tests
type APIClientUserInterface interface {
	DeleteUserRequestExecute(
		ctx context.Context,
		projectId string,
		region string,
		instanceId string,
		userId int64,
	) error
}

// CreateInstanceWaitHandler will wait for instance creation
func CreateInstanceWaitHandler(
	ctx context.Context,
	a APIClientInterface,
	projectId, instanceId, region string,
) *wait.AsyncActionHandler[v3alpha1api.GetInstanceResponse] {
	handler := wait.New(
		func() (waitFinished bool, response *v3alpha1api.GetInstanceResponse, err error) {
			s, err := a.GetInstanceRequest(ctx, projectId, region, instanceId).Execute()
			if err != nil {
				return false, nil, err
			}
			if s == nil || s.Id != instanceId {
				return false, nil, nil
			}
			switch strings.ToLower(string(s.Status)) {
			case strings.ToLower(InstanceStateSuccess):
				if s.Network.AccessScope != nil && *s.Network.AccessScope == "SNA" {
					if s.Network.InstanceAddress == nil {
						tflog.Info(ctx, "Waiting for instance_address")
						return false, nil, nil
					}
					if s.Network.RouterAddress == nil {
						tflog.Info(ctx, "Waiting for router_address")
						return false, nil, nil
					}
				}

				tflog.Info(ctx, "trying to get roles")
				time.Sleep(10 * time.Second)
				_, rolesErr := a.ListRolesRequest(ctx, projectId, region, instanceId).Execute()
				if rolesErr != nil {
					var oapiErr *oapierror.GenericOpenAPIError
					ok := errors.As(rolesErr, &oapiErr)
					if !ok {
						return false, nil, fmt.Errorf("could not convert error to oapierror.GenericOpenAPIError")
					}
					if oapiErr.StatusCode != http.StatusInternalServerError {
						tflog.Info(
							ctx, "got error from api", map[string]interface{}{
								"error": rolesErr.Error(),
							},
						)
						return false, nil, rolesErr
					}
					tflog.Info(
						ctx, "wait for get-roles to work hack", map[string]interface{}{},
					)
					time.Sleep(10 * time.Second)
					return false, nil, nil
				}

				tflog.Info(ctx, "trying to get users")
				time.Sleep(10 * time.Second)
				_, usersErr := a.ListUsersRequest(ctx, projectId, region, instanceId).Execute()
				if usersErr != nil {
					var oapiErr *oapierror.GenericOpenAPIError
					ok := errors.As(usersErr, &oapiErr)
					if !ok {
						return false, nil, fmt.Errorf("could not convert error to oapierror.GenericOpenAPIError")
					}
					if oapiErr.StatusCode != http.StatusInternalServerError {
						tflog.Info(
							ctx, "got error from api", map[string]interface{}{
								"error": rolesErr.Error(),
							},
						)
						return false, nil, usersErr
					}
					tflog.Info(
						ctx, "wait for get-users to work hack", map[string]interface{}{},
					)
					time.Sleep(10 * time.Second)
					return false, nil, nil
				}
				return true, s, nil
			case strings.ToLower(InstanceStateUnknown), strings.ToLower(InstanceStateFailed):
				return true, nil, fmt.Errorf("create failed for instance with id %s", instanceId)
			case strings.ToLower(InstanceStatePending), strings.ToLower(InstanceStateProcessing):
				tflog.Info(
					ctx, "request is being handled", map[string]interface{}{
						"status": s.Status,
					},
				)
				time.Sleep(10 * time.Second)
				return false, nil, nil
			default:
				tflog.Info(
					ctx, "Wait (create) received unknown status", map[string]interface{}{
						"instanceId": instanceId,
						"status":     s.Status,
					},
				)
				return true, nil, errors.New("unknown status received")
			}
		},
	)
	return handler
}

// UpdateInstanceWaitHandler will wait for instance update
func UpdateInstanceWaitHandler(
	ctx context.Context,
	a APIClientInterface,
	projectId, instanceId, region string,
) *wait.AsyncActionHandler[v3alpha1api.GetInstanceResponse] {
	handler := wait.New(
		func() (waitFinished bool, response *v3alpha1api.GetInstanceResponse, err error) {
			s, err := a.GetInstanceRequest(ctx, projectId, region, instanceId).Execute()
			if err != nil {
				return false, nil, err
			}
			if s == nil || s.Id != instanceId {
				return false, nil, nil
			}
			switch strings.ToLower(string(s.Status)) {
			case strings.ToLower(InstanceStateSuccess):
				return true, s, nil
			case strings.ToLower(InstanceStateUnknown), strings.ToLower(InstanceStateFailed):
				return true, s, fmt.Errorf("update failed for instance with id %s", instanceId)
			case strings.ToLower(InstanceStatePending), strings.ToLower(InstanceStateProcessing):
				tflog.Info(
					ctx, "request is being handled", map[string]interface{}{
						"status": s.Status,
					},
				)
				return false, s, nil
			default:
				tflog.Info(
					ctx, "Wait (update) received unknown status", map[string]interface{}{
						"instanceId": instanceId,
						"status":     s.Status,
					},
				)
				return false, s, nil
			}
		},
	)
	return handler
}

// DeleteInstanceWaitHandler will wait for instance deletion
func DeleteInstanceWaitHandler(
	ctx context.Context,
	a APIClientInterface,
	projectId, instanceId, region string,
) *wait.AsyncActionHandler[v3alpha1api.GetInstanceResponse] {
	handler := wait.New(
		func() (waitFinished bool, response *v3alpha1api.GetInstanceResponse, err error) {
			s, err := a.GetInstanceRequest(ctx, projectId, region, instanceId).Execute()
			if err == nil {
				return false, s, nil
			}
			var oapiErr *oapierror.GenericOpenAPIError
			ok := errors.As(err, &oapiErr)
			if !ok {
				return false, nil, fmt.Errorf("could not convert error to oapierror.GenericOpenAPIError")
			}
			if oapiErr.StatusCode != http.StatusNotFound {
				return false, nil, err
			}
			return true, nil, nil
		},
	)
	handler.SetTimeout(30 * time.Minute)
	return handler
}

// CreateDatabaseWaitHandler will wait for instance creation
func CreateDatabaseWaitHandler(
	ctx context.Context,
	a APIClientInterface,
	projectId, instanceId, region, databaseName string,
) *wait.AsyncActionHandler[v3alpha1api.GetDatabaseResponse] {
	handler := wait.New(
		func() (waitFinished bool, response *v3alpha1api.GetDatabaseResponse, err error) {
			s, err := a.GetDatabaseRequest(ctx, projectId, region, instanceId, databaseName).Execute()
			if err != nil {
				var oapiErr *oapierror.GenericOpenAPIError
				ok := errors.As(err, &oapiErr)
				if !ok {
					return false, nil, fmt.Errorf(
						"get database - could not convert error to oapierror.GenericOpenAPIError: %s",
						err.Error(),
					)
				}
				if oapiErr.StatusCode != http.StatusNotFound {
					return false, nil, err
				}
				return false, nil, nil
			}
			if s == nil || s.Name != databaseName {
				return false, nil, errors.New("response did return different result")
			}
			return true, s, nil
		},
	)
	return handler
}

// CreateUserWaitHandler will wait for instance creation
func CreateUserWaitHandler(
	ctx context.Context,
	a APIClientInterface,
	projectId, instanceId, region string,
	userId int64,
) *wait.AsyncActionHandler[v3alpha1api.GetUserResponse] {
	handler := wait.New(
		func() (waitFinished bool, response *v3alpha1api.GetUserResponse, err error) {
			s, err := a.GetUserRequest(ctx, projectId, region, instanceId, userId).Execute()
			if err != nil {
				var oapiErr *oapierror.GenericOpenAPIError
				ok := errors.As(err, &oapiErr)
				if !ok {
					return false, nil, fmt.Errorf("could not convert error to oapierror.GenericOpenAPIError")
				}
				if oapiErr.StatusCode != http.StatusNotFound {
					return false, nil, err
				}
				return false, nil, nil
			}
			return true, s, nil
		},
	)
	return handler
}

// WaitForUserWaitHandler will wait for instance creation
func WaitForUserWaitHandler(
	ctx context.Context,
	a APIClientInterface,
	projectId, instanceId, region, userName string,
) *wait.AsyncActionHandler[v3alpha1api.ListUserResponse] {
	startTime := time.Now()
	timeOut := 2 * time.Minute

	handler := wait.New(
		func() (waitFinished bool, response *v3alpha1api.ListUserResponse, err error) {
			if time.Since(startTime) > timeOut {
				return false, nil, errors.New("ran into timeout")
			}
			s, err := a.ListUsersRequest(ctx, projectId, region, instanceId).Size(100).Execute()
			if err != nil {
				var oapiErr *oapierror.GenericOpenAPIError
				ok := errors.As(err, &oapiErr)
				if !ok {
					return false, nil, fmt.Errorf(
						"wait (list users) could not convert error to oapierror.GenericOpenAPIError: %s",
						err.Error(),
					)
				}
				if oapiErr.StatusCode != http.StatusNotFound {
					return false, nil, err
				}
				tflog.Info(
					ctx, "Wait (list users) still waiting", map[string]interface{}{},
				)

				return false, nil, nil
			}
			users, ok := s.GetUsersOk()
			if !ok {
				return false, nil, errors.New("no users found")
			}

			for _, u := range users {
				if u.GetUsername() == userName {
					return true, s, nil
				}
			}
			tflog.Info(
				ctx, "Wait (list users) user still not present", map[string]interface{}{},
			)
			return false, nil, nil
		},
	)
	return handler
}

// DeleteUserWaitHandler will wait for instance deletion
func DeleteUserWaitHandler(
	ctx context.Context,
	a APIClientInterface,
	projectId, region, instanceId string,
	userId int64,
) *wait.AsyncActionHandler[struct{}] {
	handler := wait.New(
		func() (waitFinished bool, response *struct{}, err error) {
			_, err = a.GetUserRequest(ctx, projectId, region, instanceId, userId).Execute()
			if err == nil {
				return false, nil, nil
			}
			var oapiErr *oapierror.GenericOpenAPIError
			ok := errors.As(err, &oapiErr)
			if !ok {
				return false, nil, fmt.Errorf("could not convert error to oapierror.GenericOpenAPIError")
			}

			switch oapiErr.StatusCode {
			case http.StatusNotFound:
				return true, nil, nil
			default:
				return false, nil, err
			}
		},
	)
	handler.SetTimeout(15 * time.Minute)
	handler.SetSleepBeforeWait(15 * time.Second)
	return handler
}