slack: Option for logging messages.

Author: octavore

util/slack/module.go

@@ -26,8 +26,9 @@ type Module struct {
 	Config *config.Module
 	Logger *logger.Module
 
-	client slackClient
-	config struct {
+	LogMessages bool
+	client      slackClient
+	config      struct {
 		SlackConfig struct {
 			Channel  string `json:"channel"`
 			APIToken string `json:"api_token"`
@@ -56,14 +57,7 @@ type PostMessageParameters = slack.PostMessageParameters
 
 // Post a message to the default channel
 func (m *Module) Post(txt string, params *PostMessageParameters) {
-	var p PostMessageParameters
-	if params != nil {
-		p = *params
-	}
-	_, _, err := m.client.PostMessage(m.config.SlackConfig.Channel, txt, p)
-	if err != nil {
-		m.Logger.Error(errors.Wrap(err))
-	}
+	m.PostC(m.config.SlackConfig.Channel, txt, params)
 }
 
 // PostC posts a message to the given channel
@@ -72,6 +66,9 @@ func (m *Module) PostC(channel, txt string, params *PostMessageParameters) {
 	if params != nil {
 		p = *params
 	}
+	if m.LogMessages {
+		m.Logger.Infof("[%s] %s", m.config.SlackConfig.Channel, txt)
+	}
 	_, _, err := m.client.PostMessage(channel, txt, p)
 	if err != nil {
 		m.Logger.Error(errors.Wrap(err))
@@ -83,6 +80,6 @@ type dummyClient struct {
 }
 
 func (d *dummyClient) PostMessage(channel, text string, params slack.PostMessageParameters) (string, string, error) {
-	d.logger.Infof("[%s] %s", channel, text)
+	d.logger.Infof("[%s] %s (not sent)", channel, text)
 	return "", "", nil
 }