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reconcile.go
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reconcile.go
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
package mysqlaaduser
import (
"context"
"database/sql"
"fmt"
"strings"
mysqlmgmt "github.com/Azure/azure-sdk-for-go/services/mysql/mgmt/2017-12-01/mysql"
_ "github.com/go-sql-driver/mysql" //sql drive link
"github.com/pkg/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"github.com/Azure/azure-service-operator/api/v1alpha1"
"github.com/Azure/azure-service-operator/api/v1alpha2"
"github.com/Azure/azure-service-operator/pkg/errhelp"
"github.com/Azure/azure-service-operator/pkg/helpers"
"github.com/Azure/azure-service-operator/pkg/resourcemanager"
"github.com/Azure/azure-service-operator/pkg/resourcemanager/config"
"github.com/Azure/azure-service-operator/pkg/resourcemanager/mysql"
mysqlserver "github.com/Azure/azure-service-operator/pkg/resourcemanager/mysql/server"
)
type MySQLAADUserManager struct {
identityFinder *helpers.AADIdentityFinder
Creds config.Credentials
}
// NewMySQLAADUserManager creates a new MySQLAADUserManager
func NewMySQLAADUserManager(creds config.Credentials, identityFinder *helpers.AADIdentityFinder) *MySQLAADUserManager {
return &MySQLAADUserManager{
Creds: creds,
identityFinder: identityFinder,
}
}
var _ resourcemanager.ARMClient = &MySQLAADUserManager{}
// CreateUser creates an aad user
func (m *MySQLAADUserManager) CreateUser(ctx context.Context, db *sql.DB, username string, aadID string) error {
if err := helpers.FindBadChars(username); err != nil {
return errors.Wrap(err, "problem found with username")
}
if err := helpers.FindBadChars(aadID); err != nil {
return errors.Wrap(err, "problem found with clientID")
}
// TODO: Need to talk to MySQL team to understand why we even need to do this, their documentation
// TODO: says that we need to do this only for Managed Identities but it seems we need to do it
// TODO: for normal users too
_, err := db.ExecContext(ctx, "SET aad_auth_validate_oids_in_tenant = OFF")
if err != nil {
return err
}
tsql := "CREATE AADUSER IF NOT EXISTS ? IDENTIFIED BY ?"
_, err = db.ExecContext(ctx, tsql, username, aadID)
if err != nil {
return err
}
return nil
}
// Ensure that user exists
func (m *MySQLAADUserManager) Ensure(ctx context.Context, obj runtime.Object, opts ...resourcemanager.ConfigOption) (bool, error) {
instance, err := m.convert(obj)
if err != nil {
return false, err
}
_, err = m.GetServer(ctx, instance.Spec.ResourceGroup, instance.Spec.Server)
if err != nil {
instance.Status.Message = errhelp.StripErrorIDs(err)
return false, mysql.IgnoreResourceNotFound(err)
}
adminIdentity, err := m.identityFinder.FindIdentity(ctx)
if err != nil {
err = errors.Wrapf(err, "failed to find identity")
instance.Status.Message = err.Error()
return false, err
}
fullServerName := mysql.GetFullSQLServerName(instance.Spec.Server)
fullUsername := mysql.GetFullyQualifiedUserName(adminIdentity.IdentityName, instance.Spec.Server)
db, err := mysql.ConnectToSQLDBAsCurrentUser(
ctx,
mysql.DriverName,
fullServerName,
mysql.SystemDatabase,
mysql.ServerPort,
fullUsername,
adminIdentity.ClientID)
if err != nil {
instance.Status.Message = errhelp.StripErrorIDs(err)
// catch firewall issue - keep cycling until it clears up
if strings.Contains(err.Error(), "is not allowed to connect to this MySQL server") {
return false, nil
}
return false, mysql.IgnoreDatabaseBusy(err)
}
defer db.Close()
instance.Status.SetProvisioning("")
username := instance.Username()
err = m.CreateUser(ctx, db, username, instance.Spec.AADID)
if err != nil {
instance.Status.Message = "failed creating user, err: " + err.Error()
return false, err
}
err = mysql.EnsureUserServerRoles(ctx, db, username, instance.Spec.Roles)
if err != nil {
err = errors.Wrap(err, "ensuring server roles")
instance.Status.Message = err.Error()
return false, err
}
err = mysql.EnsureUserDatabaseRoles(ctx, db, username, instance.Spec.DatabaseRoles)
if err != nil {
err = errors.Wrap(err, "ensuring database roles")
instance.Status.Message = err.Error()
return false, err
}
instance.Status.SetProvisioned(resourcemanager.SuccessMsg)
instance.Status.State = "Succeeded"
return true, nil
}
// Delete deletes a user
func (m *MySQLAADUserManager) Delete(ctx context.Context, obj runtime.Object, opts ...resourcemanager.ConfigOption) (bool, error) {
instance, err := m.convert(obj)
if err != nil {
return false, err
}
// short circuit connection if server doesn't exist
_, err = m.GetServer(ctx, instance.Spec.ResourceGroup, instance.Spec.Server)
if err != nil {
instance.Status.Message = err.Error()
return false, mysql.IgnoreResourceNotFound(err)
}
adminIdentity, err := m.identityFinder.FindIdentity(ctx)
if err != nil {
err = errors.Wrapf(err, "failed to find identity")
instance.Status.Message = err.Error()
return false, err
}
fullServerName := mysql.GetFullSQLServerName(instance.Spec.Server)
fullUsername := mysql.GetFullyQualifiedUserName(adminIdentity.IdentityName, instance.Spec.Server)
db, err := mysql.ConnectToSQLDBAsCurrentUser(
ctx,
mysql.DriverName,
fullServerName,
mysql.SystemDatabase,
mysql.ServerPort,
fullUsername,
adminIdentity.ClientID)
if err != nil {
instance.Status.Message = errhelp.StripErrorIDs(err)
if strings.Contains(err.Error(), "is not allowed to connect to this MySQL server") {
//for the ip address has no access to server, stop the reconcile and delete the user from controller
return false, nil
}
return false, err
}
defer db.Close()
err = mysql.DropUser(ctx, db, instance.Username())
if err != nil {
instance.Status.Message = fmt.Sprintf("Delete MySqlUser failed with %s", err.Error())
return false, err
}
instance.Status.Message = fmt.Sprintf("Delete MySqlUser succeeded")
return false, nil
}
// GetServer retrieves a server
func (m *MySQLAADUserManager) GetServer(ctx context.Context, resourceGroupName, serverName string) (mysqlmgmt.Server, error) {
client := mysqlserver.MakeMySQLServerAzureClient(m.Creds)
return client.Get(ctx, resourceGroupName, serverName)
}
// GetParents gets the parents of the user
func (m *MySQLAADUserManager) GetParents(obj runtime.Object) ([]resourcemanager.KubeParent, error) {
instance, err := m.convert(obj)
if err != nil {
return nil, err
}
return []resourcemanager.KubeParent{
{
Key: types.NamespacedName{
Namespace: instance.Namespace,
Name: instance.Spec.Server,
},
Target: &v1alpha2.MySQLServer{},
},
{
Key: types.NamespacedName{
Namespace: instance.Namespace,
Name: instance.Spec.ResourceGroup,
},
Target: &v1alpha1.ResourceGroup{},
},
}, nil
}
// GetStatus gets the status
func (m *MySQLAADUserManager) GetStatus(obj runtime.Object) (*v1alpha1.ASOStatus, error) {
instance, err := m.convert(obj)
if err != nil {
return nil, err
}
st := v1alpha1.ASOStatus(instance.Status)
return &st, nil
}
func (m *MySQLAADUserManager) convert(obj runtime.Object) (*v1alpha2.MySQLAADUser, error) {
local, ok := obj.(*v1alpha2.MySQLAADUser)
if !ok {
return nil, fmt.Errorf("failed type assertion on kind: %s", obj.GetObjectKind().GroupVersionKind().String())
}
return local, nil
}