/
mssql.go
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/
mssql.go
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package app
import (
"context"
"fmt"
"strconv"
"strings"
"time"
"github.com/pkg/errors"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/yaml"
"k8s.io/client-go/kubernetes"
crv1alpha1 "github.com/kanisterio/kanister/pkg/apis/cr/v1alpha1"
"github.com/kanisterio/kanister/pkg/field"
"github.com/kanisterio/kanister/pkg/kube"
"github.com/kanisterio/kanister/pkg/log"
)
const (
mssqlWaitTimeout = 5 * time.Minute
dbUserName = "sa"
dbPass = "MyC0m9l&xP@ssw0rd"
connString = "/opt/mssql-tools/bin/sqlcmd -S localhost -U %s -P \"%s\" -Q "
)
type MssqlDB struct {
cli kubernetes.Interface
namespace string
name string
deployment *appsv1.Deployment
service *corev1.Service
pvc *corev1.PersistentVolumeClaim
secret *corev1.Secret
}
func NewMssqlDB(name string) App {
return &MssqlDB{
name: name,
}
}
func (m *MssqlDB) ConfigMaps() map[string]crv1alpha1.ObjectReference {
return nil
}
func (m *MssqlDB) Secrets() map[string]crv1alpha1.ObjectReference {
return map[string]crv1alpha1.ObjectReference{
"mssql": {
Kind: "Secret",
Name: m.name,
Namespace: m.namespace,
},
}
}
func (m *MssqlDB) Init(ctx context.Context) error {
cfg, err := kube.LoadConfig()
if err != nil {
return err
}
m.cli, err = kubernetes.NewForConfig(cfg)
return err
}
func (m *MssqlDB) Install(ctx context.Context, namespace string) error {
m.namespace = namespace
secret, err := m.cli.CoreV1().Secrets(namespace).Create(ctx, m.getSecretObj(), metav1.CreateOptions{})
if err != nil {
return err
}
log.Print("Secret created successfully", field.M{"app": m.name, "secret": secret.Name})
m.secret = secret
pvcObj, err := m.getPVCObj()
if err != nil {
return err
}
pvc, err := m.cli.CoreV1().PersistentVolumeClaims(namespace).Create(ctx, pvcObj, metav1.CreateOptions{})
if err != nil {
return err
}
log.Print("PVC created successfully", field.M{"app": m.name, "pvc": pvc.Name})
m.pvc = pvc
deploymentObj, err := m.getDeploymentObj()
if err != nil {
return err
}
deployment, err := m.cli.AppsV1().Deployments(namespace).Create(ctx, deploymentObj, metav1.CreateOptions{})
if err != nil {
return err
}
log.Print("Deployment created successfully", field.M{"app": m.name, "deployment": deployment.Name})
m.deployment = deployment
serviceObj, err := m.getServiceObj()
if err != nil {
return err
}
service, err := m.cli.CoreV1().Services(namespace).Create(ctx, serviceObj, metav1.CreateOptions{})
if err != nil {
return err
}
log.Print("Service created successfully", field.M{"app": m.name, "service": service.Name})
m.service = service
return nil
}
func (m *MssqlDB) IsReady(ctx context.Context) (bool, error) {
log.Print("Waiting for the mssql application to be ready.", field.M{"app": m.name})
ctx, cancel := context.WithTimeout(ctx, mssqlWaitTimeout)
defer cancel()
err := kube.WaitOnDeploymentReady(ctx, m.cli, m.namespace, m.deployment.Name)
if err != nil {
return false, err
}
log.Print("Application instance is ready.", field.M{"app": m.name})
return true, nil
}
func (m *MssqlDB) Object() crv1alpha1.ObjectReference {
return crv1alpha1.ObjectReference{
Kind: "deployment",
Name: "mssql-deployment",
Namespace: m.namespace,
}
}
func (m *MssqlDB) Uninstall(ctx context.Context) error {
err := m.cli.AppsV1().Deployments(m.namespace).Delete(ctx, m.deployment.Name, metav1.DeleteOptions{})
if err != nil {
return err
}
log.Print("Deployment deleted successfully", field.M{"app": m.name})
err = m.cli.CoreV1().PersistentVolumeClaims(m.namespace).Delete(ctx, m.pvc.Name, metav1.DeleteOptions{})
if err != nil {
return err
}
log.Print("PVC deleted successfully", field.M{"app": m.name})
err = m.cli.CoreV1().Services(m.namespace).Delete(ctx, m.service.Name, metav1.DeleteOptions{})
if err != nil {
return err
}
log.Print("Service deleted successfully", field.M{"app": m.name})
err = m.cli.CoreV1().Secrets(m.namespace).Delete(ctx, m.secret.Name, metav1.DeleteOptions{})
if err != nil {
return err
}
log.Print("Secret deleted successfully", field.M{"app": m.name})
return nil
}
func (m *MssqlDB) Ping(ctx context.Context) error {
log.Print("Pinging mssql database", field.M{"app": m.name})
count := fmt.Sprintf(connString+
"\"SELECT name FROM sys.databases WHERE name NOT IN ('master','model','msdb','tempdb')\" -b -s \",\" -h -1", dbUserName, dbPass)
loginMssql := []string{"sh", "-c", count}
_, stderr, err := m.execCommand(ctx, loginMssql)
if err != nil {
return errors.Wrapf(err, "Error while Pinging the database: %s", stderr)
}
log.Print("Ping to the application was success.", field.M{"app": m.name})
return nil
}
func (m *MssqlDB) Insert(ctx context.Context) error {
log.Print("Adding entry to database", field.M{"app": m.name})
insert := fmt.Sprintf(connString+
"\"USE test; INSERT INTO Inventory VALUES (1, 'banana', 150)\"", dbUserName, dbPass)
insertQuery := []string{"sh", "-c", insert}
_, stderr, err := m.execCommand(ctx, insertQuery)
if err != nil {
return errors.Wrapf(err, "Error while inserting data into table: %s", stderr)
}
return nil
}
func (m *MssqlDB) Count(ctx context.Context) (int, error) {
log.Print("Counting entries from database", field.M{"app": m.name})
insert := fmt.Sprintf(connString+
"\"SET NOCOUNT ON; USE test; SELECT COUNT(*) FROM Inventory\" -h -1", dbUserName, dbPass)
insertQuery := []string{"sh", "-c", insert}
stdout, stderr, err := m.execCommand(ctx, insertQuery)
if err != nil {
return 0, errors.Wrapf(err, "Error while inserting data into table: %s", stderr)
}
rowsReturned, err := strconv.Atoi(strings.TrimSpace(strings.Split(stdout, "\n")[1]))
if err != nil {
return 0, errors.Wrapf(err, "Error while converting response of count query: %s", stderr)
}
return rowsReturned, nil
}
func (m *MssqlDB) Reset(ctx context.Context) error {
log.Print("Reseting database", field.M{"app": m.name})
delete := fmt.Sprintf(connString+"\"DROP DATABASE test\"", dbUserName, dbPass)
deleteQuery := []string{"sh", "-c", delete}
_, stderr, err := m.execCommand(ctx, deleteQuery)
if err != nil {
return errors.Wrapf(err, "Error while inserting data into table: %s", stderr)
}
return nil
}
func (m *MssqlDB) Initialize(ctx context.Context) error {
log.Print("Initializing database", field.M{"app": m.name})
createDB := fmt.Sprintf(connString+"\"CREATE DATABASE test\"", dbUserName, dbPass)
createTable := fmt.Sprintf(connString+
"\"USE test; CREATE TABLE Inventory (id INT, name NVARCHAR(50), quantity INT)\"", dbUserName, dbPass)
execQuery := []string{"sh", "-c", createDB}
_, stderr, err := m.execCommand(ctx, execQuery)
if err != nil {
return errors.Wrapf(err, "Error while creating the database: %s", stderr)
}
execQuery = []string{"sh", "-c", createTable}
_, stderr, err = m.execCommand(ctx, execQuery)
if err != nil {
return errors.Wrapf(err, "Error while creating table: %s", stderr)
}
return nil
}
func (m *MssqlDB) GetClusterScopedResources(ctx context.Context) []crv1alpha1.ObjectReference {
return nil
}
func (m MssqlDB) execCommand(ctx context.Context, command []string) (string, string, error) {
podName, containerName, err := kube.GetPodContainerFromDeployment(ctx, m.cli, m.namespace, m.deployment.Name)
if err != nil || podName == "" {
return "", "", errors.Wrapf(err, "Error getting pod and container name for app %s.", m.name)
}
return kube.Exec(m.cli, m.namespace, podName, containerName, command, nil)
}
func (m *MssqlDB) getDeploymentObj() (*appsv1.Deployment, error) {
deploymentManifest :=
`apiVersion: apps/v1
kind: Deployment
metadata:
name: mssql-deployment
labels:
app: mssql
spec:
replicas: 1
selector:
matchLabels:
app: mssql
template:
metadata:
labels:
app: mssql
spec:
terminationGracePeriodSeconds: 30
hostname: mssqlinst
securityContext:
fsGroup: 10001
containers:
- name: mssql
image: mcr.microsoft.com/mssql/server:2019-latest
ports:
- containerPort: 1433
env:
- name: MSSQL_PID
value: "Developer"
- name: ACCEPT_EULA
value: "Y"
- name: SA_PASSWORD
valueFrom:
secretKeyRef:
name: mssql
key: SA_PASSWORD
volumeMounts:
- name: mssqldb
mountPath: /var/opt/mssql
volumes:
- name: mssqldb
persistentVolumeClaim:
claimName: mssql-data`
var deployment *appsv1.Deployment
err := yaml.Unmarshal([]byte(deploymentManifest), &deployment)
return deployment, err
}
func (m *MssqlDB) getPVCObj() (*corev1.PersistentVolumeClaim, error) {
pvcmaniFest :=
`kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: mssql-data
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 4Gi`
var pvc *corev1.PersistentVolumeClaim
err := yaml.Unmarshal([]byte(pvcmaniFest), &pvc)
return pvc, err
}
func (m *MssqlDB) getServiceObj() (*corev1.Service, error) {
serviceManifest :=
`apiVersion: v1
kind: Service
metadata:
name: mssql-deployment
spec:
selector:
app: mssql
ports:
- protocol: TCP
port: 1433
targetPort: 1433
type: ClusterIP`
var service *corev1.Service
err := yaml.Unmarshal([]byte(serviceManifest), &service)
return service, err
}
func (m MssqlDB) getSecretObj() *corev1.Secret {
return &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: m.name,
},
Data: map[string][]byte{
"SA_PASSWORD": []byte(dbPass),
},
Type: "Opaque",
}
}