add XmppNotifier
parent
fa871f6467
commit
a9659de229
@ -0,0 +1,112 @@
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package core
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import (
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"errors"
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"fmt"
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"strings"
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"time"
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"github.com/spf13/viper"
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xmpp "github.com/mattn/go-xmpp"
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)
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// box config required for the XmppNotifier
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type XmppNotifier struct {
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Recipients []string
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}
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func (n XmppNotifier) New(config interface{}) (AbstractNotifier, error) {
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// assign configuration to the notifier after ensuring the correct type.
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// lesson of this project: golang requires us to fuck around with type
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// assertions, instead of providing us with proper inheritance.
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asserted, ok := config.(XmppNotifier)
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if !ok || asserted.Recipients == nil {
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// config did not contain valid options.
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// first try fallback: parse result of viper is a map[string]interface{},
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// which requires a different assertion change
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asserted2, ok := config.(map[string]interface{})
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if ok {
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asserted3, ok := asserted2["recipients"].([]interface{})
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if ok {
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asserted = XmppNotifier{Recipients: []string{}}
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for _, rec := range asserted3 {
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asserted.Recipients = append(asserted.Recipients, rec.(string))
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}
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}
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}
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if asserted.Recipients == nil {
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return nil, errors.New("Invalid XmppNotifier options")
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}
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}
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return XmppNotifier{
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Recipients: asserted.Recipients,
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}, nil
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}
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func (n XmppNotifier) ComposeNotification(box *Box, checks []CheckResult) Notification {
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errTexts := []string{}
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resolvedTexts := []string{}
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for _, check := range checks {
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if check.Status == CheckErr {
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errTexts = append(errTexts, check.String())
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} else {
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resolvedTexts = append(resolvedTexts, check.String())
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}
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}
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var (
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resolved string
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resolvedList string
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errList string
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)
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if len(resolvedTexts) != 0 {
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resolvedList = fmt.Sprintf("Resolved issue(s):\n\n%s\n\n", strings.Join(resolvedTexts, "\n"))
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}
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if len(errTexts) != 0 {
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errList = fmt.Sprintf("New issue(s):\n\n%s\n\n", strings.Join(errTexts, "\n"))
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} else {
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resolved = "resolved "
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}
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return Notification{
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Subject: fmt.Sprintf("Issues %swith your box \"%s\" on opensensemap.org!", resolved, box.Name),
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Body: fmt.Sprintf("A check at %s identified the following updates for your box \"%s\":\n\n%s%sYou may visit https://opensensemap.org/explore/%s for more details.\n\n--\nSent automatically by osem_notify (https://github.com/noerw/osem_notify)",
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time.Now().Round(time.Minute), box.Name, errList, resolvedList, box.Id),
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}
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}
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func (n XmppNotifier) Submit(notification Notification) error {
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xmppOpts := xmpp.Options{
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Host: viper.GetString("xmpp.host"),
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User: viper.GetString("xmpp.user"),
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Password: viper.GetString("xmpp.pass"),
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Resource: "osem_notify",
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}
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if viper.GetBool("xmpp.starttls") {
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xmppOpts.NoTLS = true
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xmppOpts.StartTLS = true
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}
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client, err := xmppOpts.NewClient()
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if err != nil {
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return err
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}
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for _, recipient := range n.Recipients {
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_, err = client.Send(xmpp.Chat{
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Remote: recipient,
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Subject: notification.Subject,
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Text: fmt.Sprintf("%s\n\n%s", notification.Subject, notification.Body),
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})
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if err != nil {
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return err
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}
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}
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return err
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}
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