153 lines
		
	
	
		
			3.6 KiB
		
	
	
	
		
			Go
		
	
	
	
			
		
		
	
	
			153 lines
		
	
	
		
			3.6 KiB
		
	
	
	
		
			Go
		
	
	
	
package slack
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import (
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	"bytes"
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	"context"
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	"encoding/json"
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	"net/http"
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	"strings"
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	"github.com/jenkinsci/kubernetes-operator/pkg/apis/jenkins/v1alpha2"
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	"github.com/jenkinsci/kubernetes-operator/pkg/controller/jenkins/notifications/event"
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	"github.com/jenkinsci/kubernetes-operator/pkg/controller/jenkins/notifications/provider"
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	"github.com/pkg/errors"
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	corev1 "k8s.io/api/core/v1"
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	"k8s.io/apimachinery/pkg/types"
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	k8sclient "sigs.k8s.io/controller-runtime/pkg/client"
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)
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const (
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	infoColor    = "#439FE0"
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	warningColor = "danger"
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	defaultColor = "#c8c8c8"
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)
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// Slack is a Slack notification service
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type Slack struct {
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	httpClient http.Client
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	k8sClient  k8sclient.Client
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	config     v1alpha2.Notification
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}
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// New returns instance of Slack
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func New(k8sClient k8sclient.Client, config v1alpha2.Notification, httpClient http.Client) *Slack {
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	return &Slack{k8sClient: k8sClient, config: config, httpClient: httpClient}
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}
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// Message is representation of json message
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type Message struct {
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	Text        string       `json:"text"`
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	Attachments []Attachment `json:"attachments"`
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}
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// Attachment is representation of json attachment
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type Attachment struct {
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	Fallback string            `json:"fallback"`
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	Color    event.StatusColor `json:"color"`
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	Pretext  string            `json:"pretext"`
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	Title    string            `json:"title"`
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	Text     string            `json:"text"`
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	Fields   []Field           `json:"fields"`
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	Footer   string            `json:"footer"`
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}
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// Field is representation of json field.
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type Field struct {
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	Title string `json:"title"`
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	Value string `json:"value"`
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	Short bool   `json:"short"`
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}
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func (s Slack) getStatusColor(logLevel v1alpha2.NotificationLevel) event.StatusColor {
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	switch logLevel {
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	case v1alpha2.NotificationLevelInfo:
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		return infoColor
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	case v1alpha2.NotificationLevelWarning:
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		return warningColor
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	default:
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		return defaultColor
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	}
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}
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func (s Slack) generateMessage(e event.Event) Message {
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	var messageStringBuilder strings.Builder
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	if s.config.Verbose {
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		for _, msg := range e.Reason.Verbose() {
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			messageStringBuilder.WriteString("\n - " + msg + "\n")
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		}
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	} else {
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		for _, msg := range e.Reason.Short() {
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			messageStringBuilder.WriteString("\n - " + msg + "\n")
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		}
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	}
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	sm := Message{
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		Attachments: []Attachment{
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			{
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				Title:    provider.NotificationTitle(e),
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				Fallback: "",
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				Color:    s.getStatusColor(e.Level),
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				Fields: []Field{
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					{
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						Title: "",
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						Value: messageStringBuilder.String(),
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						Short: false,
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					},
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					{
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						Title: provider.NamespaceFieldName,
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						Value: e.Jenkins.Namespace,
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						Short: true,
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					},
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					{
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						Title: provider.CrNameFieldName,
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						Value: e.Jenkins.Name,
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						Short: true,
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					},
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					{
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						Title: provider.PhaseFieldName,
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						Value: string(e.Phase),
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						Short: true,
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					},
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				},
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			},
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		},
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	}
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	return sm
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}
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// Send is function for sending directly to API
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func (s Slack) Send(e event.Event) error {
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	secret := &corev1.Secret{}
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	selector := s.config.Slack.WebHookURLSecretKeySelector
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	err := s.k8sClient.Get(context.TODO(), types.NamespacedName{Name: selector.Name, Namespace: e.Jenkins.Namespace}, secret)
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	if err != nil {
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		return err
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	}
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	slackMessage, err := json.Marshal(s.generateMessage(e))
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	if err != nil {
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		return err
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	}
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	secretValue := string(secret.Data[selector.Key])
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	if secretValue == "" {
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		return errors.Errorf("Slack WebHook URL is empty in secret '%s/%s[%s]", e.Jenkins.Namespace, selector.Name, selector.Key)
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	}
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	request, err := http.NewRequest("POST", secretValue, bytes.NewBuffer(slackMessage))
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	if err != nil {
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		return err
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	}
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	resp, err := s.httpClient.Do(request)
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	if err != nil {
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		return err
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	}
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	defer func() { _ = resp.Body.Close() }()
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	return nil
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}
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