helpers.go

/*
Copyright (C) 2018 Synopsys, Inc.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you 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 util

import (
	"fmt"
	"strings"
	"time"

	blackduckv1 "github.com/blackducksoftware/synopsys-operator/pkg/api/blackduck/v1"
	blackduckclient "github.com/blackducksoftware/synopsys-operator/pkg/blackduck/client/clientset/versioned"
	"github.com/blackducksoftware/synopsys-operator/pkg/util"
	batchv1 "k8s.io/api/batch/v1"
	corev1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/types"
	"k8s.io/client-go/kubernetes"
)

// GetHubVersion will return the Blackduck version from the list of Blackduck environment variables
func GetHubVersion(environs []string) string {
	for _, value := range environs {
		if strings.Contains(value, "HUB_VERSION") {
			values := strings.SplitN(value, ":", 2)
			if len(values) == 2 {
				return strings.TrimSpace(values[1])
			}
			break
		}
	}

	return ""
}

// GetLoadBalancerIPAddress will return the load balance service ip address
func GetLoadBalancerIPAddress(kubeClient *kubernetes.Clientset, namespace string, serviceName string) (string, error) {
	service, err := util.GetService(kubeClient, namespace, serviceName)
	if err != nil {
		return "", fmt.Errorf("unable to get service %s in %s namespace because %s", serviceName, namespace, err.Error())
	}

	if len(service.Status.LoadBalancer.Ingress) > 0 {
		ipAddress := service.Status.LoadBalancer.Ingress[0].IP
		return ipAddress, nil
	}

	return "", fmt.Errorf("unable to get ip address for the service %s in %s namespace", serviceName, namespace)
}

// GetNodePortIPAddress will return the node port service ip address
func GetNodePortIPAddress(kubeClient *kubernetes.Clientset, namespace string, serviceName string) (string, error) {
	// Get the node port service
	service, err := util.GetService(kubeClient, namespace, serviceName)
	if err != nil {
		return "", fmt.Errorf("unable to get service %s in %s namespace because %s", serviceName, namespace, err.Error())
	}

	var nodePort []int32
	// Get the nodeport
	for _, port := range service.Spec.Ports {
		nodePort = append(nodePort, port.NodePort)
	}
	return intArrayToStringArray(nodePort, ","), nil
}

func intArrayToStringArray(intArr []int32, delim string) string {
	var strArr []string
	for i := range intArr {
		strArr = append(strArr, fmt.Sprintf("<<NODE_IP_ADDRESS>>:%+v", intArr[i]))
	}
	return strings.Join(strArr, delim)
}

// UpdateState will be used to update the hub object
func UpdateState(h *blackduckclient.Clientset, name string, namespace string, statusState string, error error) (*blackduckv1.Blackduck, error) {
	errorMessage := ""
	if error != nil {
		errorMessage = fmt.Sprintf("%+v", error)
	}

	patch := fmt.Sprintf("{\"status\":{\"state\":\"%s\",\"errorMessage\":\"%s\"}}", statusState, errorMessage)
	return h.SynopsysV1().Blackducks(namespace).Patch(name, types.MergePatchType, []byte(patch))
}

// GetHubDBPassword will retrieve the blackduck and blackduck_user db password
func GetHubDBPassword(kubeClient *kubernetes.Clientset, namespace string, name string) (string, string, error) {
	var userPw, adminPw string

	secret, err := util.GetSecret(kubeClient, namespace, util.GetResourceName(name, util.BlackDuckName, "db-creds"))
	if err != nil {
		return userPw, adminPw, err
	}

	s, ok := secret.Data["HUB_POSTGRES_USER_PASSWORD_FILE"]
	if !ok {
		return "", "", fmt.Errorf("HUB_POSTGRES_USER_PASSWORD_FILE is missing")
	}
	userPw = string(s)

	s, ok = secret.Data["HUB_POSTGRES_ADMIN_PASSWORD_FILE"]
	if !ok {
		return "", "", fmt.Errorf("HUB_POSTGRES_ADMIN_PASSWORD_FILE is missing")
	}
	adminPw = string(s)
	return userPw, adminPw, nil
}

// CloneJob create a Kube job to clone a postgres instance
func CloneJob(clientset *kubernetes.Clientset, fromNamespace string, from string, toNamespace string, to string, password string) error {
	command := fmt.Sprintf("pg_dumpall -h %s.%s.svc.cluster.local -U postgres | psql -h %s.%s.svc.cluster.local -U postgres", util.GetResourceName(from, util.BlackDuckName, "postgres"), fromNamespace, util.GetResourceName(to, util.BlackDuckName, "postgres"), toNamespace)

	cloneJob := &batchv1.Job{
		ObjectMeta: metav1.ObjectMeta{
			Name: util.GetResourceName(to, util.BlackDuckName, "clone-job"),
		},
		Spec: batchv1.JobSpec{
			Template: corev1.PodTemplateSpec{
				Spec: corev1.PodSpec{
					Containers: []corev1.Container{
						{
							Name:    "clone",
							Image:   "registry.access.redhat.com/rhscl/postgresql-96-rhel7:1",
							Command: []string{"/bin/bash"},
							Args: []string{
								"-c",
								command,
							},
							Env: []corev1.EnvVar{
								{
									Name:  "PGPASSWORD",
									Value: password,
								},
							},
						},
					},
					RestartPolicy: corev1.RestartPolicyNever,
				},
			},
		},
	}

	job, err := clientset.BatchV1().Jobs(toNamespace).Create(cloneJob)
	if err != nil {
		return err
	}

	timeout := time.After(30 * time.Minute)
	tick := time.Tick(10 * time.Second)

	for {
		select {
		case <-timeout:
			return fmt.Errorf("the clone operation timed out")

		case <-tick:
			job, err = clientset.BatchV1().Jobs(job.Namespace).Get(job.Name, metav1.GetOptions{})
			if err != nil {
				return err
			}
			if job.Status.Succeeded > 0 {
				//clientset.BatchV1().Jobs(job.Namespace).Delete(job.Name, &metav1.DeleteOptions{})
				return nil
			}
		}
	}
}