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mysqluser_reconcile.go
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mysqluser_reconcile.go
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
package mysqluser
import (
"context"
"fmt"
"reflect"
"strings"
_ "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/pkg/resourcemanager/config"
mysqlserver "github.com/Azure/azure-service-operator/pkg/resourcemanager/mysql/server"
"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/resourcemanager"
"github.com/Azure/azure-service-operator/pkg/resourcemanager/mysql"
"github.com/Azure/azure-service-operator/pkg/secrets"
keyvaultSecrets "github.com/Azure/azure-service-operator/pkg/secrets/keyvault"
)
// Ensure that user exists
func (s *MySqlUserManager) Ensure(ctx context.Context, obj runtime.Object, opts ...resourcemanager.ConfigOption) (bool, error) {
instance, err := s.convert(obj)
if err != nil {
return false, err
}
requestedUsername := instance.Spec.Username
if len(requestedUsername) == 0 {
requestedUsername = instance.Name
}
options := &resourcemanager.Options{}
for _, opt := range opts {
opt(options)
}
adminSecretClient := s.SecretClient
if len(instance.Spec.AdminSecretKeyVault) != 0 {
adminSecretClient = keyvaultSecrets.New(
instance.Spec.AdminSecretKeyVault,
s.Creds,
s.SecretClient.GetSecretNamingVersion(),
config.PurgeDeletedKeyVaultSecrets(),
config.RecoverSoftDeletedKeyVaultSecrets())
}
adminSecretKey := secrets.SecretKey{Name: instance.Spec.GetAdminSecretName(), Namespace: instance.Namespace, Kind: reflect.TypeOf(v1alpha2.MySQLServer{}).Name()}
// get admin creds for server
adminSecret, err := adminSecretClient.Get(ctx, adminSecretKey)
if err != nil {
err = errors.Wrap(err, "MySQLServer admin secret not found")
instance.Status.Provisioning = false
instance.Status.Message = err.Error()
return false, nil
}
var mysqlUserSecretClient secrets.SecretClient
if options.SecretClient != nil {
mysqlUserSecretClient = options.SecretClient
} else {
mysqlUserSecretClient = s.SecretClient
}
_, err = s.GetServer(ctx, instance.Spec.ResourceGroup, instance.Spec.Server)
if err != nil {
instance.Status.Message = errhelp.StripErrorIDs(err)
instance.Status.Provisioning = false
if mysql.IsErrorResourceNotFound(err) {
return false, nil
}
return false, err
}
adminUser := string(adminSecret[mysqlserver.FullyQualifiedUsernameSecretKey])
adminPassword := string(adminSecret[mysqlserver.PasswordSecretKey])
fullServerName := string(adminSecret[mysqlserver.FullyQualifiedServerNameSecretKey])
db, err := mysql.ConnectToSqlDB(
ctx,
mysql.DriverName,
fullServerName,
mysql.SystemDatabase,
mysql.ServerPort,
adminUser,
adminPassword)
if err != nil {
instance.Status.Message = errhelp.StripErrorIDs(err)
instance.Status.Provisioning = false
// 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
}
// if the database is busy, requeue
errorString := err.Error()
if strings.Contains(errorString, "Please retry the connection later") {
return false, nil
}
return false, err
}
defer db.Close()
secretKey := secrets.SecretKey{Name: instance.Name, Namespace: instance.Namespace, Kind: instance.TypeMeta.Kind}
// create or get new user secret
userSecret := s.GetOrPrepareSecret(ctx, instance, mysqlUserSecretClient)
// reset user from secret in case it was loaded
user := string(userSecret[MSecretUsernameKey])
if user == "" {
user = fmt.Sprintf(requestedUsername)
userSecret[MSecretUsernameKey] = []byte(user)
}
// Publishing the user secret:
// We do this first so if the keyvault does not have right permissions we will not proceed to creating the user
err = mysqlUserSecretClient.Upsert(
ctx,
secretKey,
userSecret,
secrets.WithOwner(instance),
secrets.WithScheme(s.Scheme),
)
if err != nil {
instance.Status.Message = "failed to update secret, err: " + err.Error()
return false, err
}
user, err = s.CreateUser(ctx, userSecret, db)
if err != nil {
instance.Status.Message = "failed creating user, err: " + err.Error()
return false, err
}
err = mysql.EnsureUserServerRoles(ctx, db, user, 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, user, 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 (s *MySqlUserManager) Delete(ctx context.Context, obj runtime.Object, opts ...resourcemanager.ConfigOption) (bool, error) {
options := &resourcemanager.Options{}
for _, opt := range opts {
opt(options)
}
instance, err := s.convert(obj)
if err != nil {
return false, err
}
adminSecretClient := s.SecretClient
adminSecretName := instance.Spec.AdminSecret
if len(instance.Spec.AdminSecret) == 0 {
adminSecretName = instance.Spec.Server
}
adminSecretKey := secrets.SecretKey{Name: adminSecretName, Namespace: instance.Namespace, Kind: reflect.TypeOf(v1alpha2.MySQLServer{}).Name()}
var mysqlUserSecretClient secrets.SecretClient
if options.SecretClient != nil {
mysqlUserSecretClient = options.SecretClient
} else {
mysqlUserSecretClient = s.SecretClient
}
// if the admin secret keyvault is not specified, fall back to configured secretclient
if len(instance.Spec.AdminSecretKeyVault) != 0 {
adminSecretClient = keyvaultSecrets.New(
instance.Spec.AdminSecretKeyVault,
s.Creds,
s.SecretClient.GetSecretNamingVersion(),
config.PurgeDeletedKeyVaultSecrets(),
config.RecoverSoftDeletedKeyVaultSecrets())
}
adminSecret, err := adminSecretClient.Get(ctx, adminSecretKey)
if err != nil {
// assuming if the admin secret is gone the sql server is too
return false, nil
}
// short circuit connection if database doesn't exist
_, err = s.GetServer(ctx, instance.Spec.ResourceGroup, instance.Spec.Server)
if err != nil {
instance.Status.Message = err.Error()
if mysql.IsErrorResourceNotFound(err) {
return false, nil
}
return false, err
}
adminUser := string(adminSecret["fullyQualifiedUsername"])
adminPassword := string(adminSecret[MSecretPasswordKey])
fullServerName := string(adminSecret["fullyQualifiedServerName"])
db, err := mysql.ConnectToSqlDB(
ctx,
mysql.DriverName,
fullServerName,
mysql.SystemDatabase,
mysql.ServerPort,
adminUser,
adminPassword,
)
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()
var userSecretClient secrets.SecretClient
if options.SecretClient != nil {
userSecretClient = options.SecretClient
} else {
userSecretClient = s.SecretClient
}
secretKey := secrets.SecretKey{Name: instance.Name, Namespace: instance.Namespace, Kind: instance.TypeMeta.Kind}
userSecret, err := userSecretClient.Get(ctx, secretKey)
if err != nil {
return false, nil
}
user := string(userSecret[MSecretUsernameKey])
err = mysql.DropUser(ctx, db, user)
if err != nil {
instance.Status.Message = fmt.Sprintf("Delete MySqlUser failed with %s", err.Error())
return false, err
}
// Once the user has been dropped, also delete their secrets.
s.DeleteSecrets(ctx, instance, mysqlUserSecretClient)
instance.Status.Message = fmt.Sprintf("Delete MySqlUser succeeded")
return false, nil
}
// GetParents gets the parents of the user
func (s *MySqlUserManager) GetParents(obj runtime.Object) ([]resourcemanager.KubeParent, error) {
instance, err := s.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 (s *MySqlUserManager) GetStatus(obj runtime.Object) (*v1alpha1.ASOStatus, error) {
instance, err := s.convert(obj)
if err != nil {
return nil, err
}
st := v1alpha1.ASOStatus(instance.Status)
return &st, nil
}
func (s *MySqlUserManager) convert(obj runtime.Object) (*v1alpha2.MySQLUser, error) {
local, ok := obj.(*v1alpha2.MySQLUser)
if !ok {
return nil, fmt.Errorf("failed type assertion on kind: %s", obj.GetObjectKind().GroupVersionKind().String())
}
return local, nil
}