all: implement notification using Mattermost incoming webhook

In the server configuration, one can defined the following section
to send the notification using Mattermost,

[notif]
kind = mattermost
webhook_url = # The incoming webhook URL.
channel = # The channel where the notification will be placed.
down_template = # Message template when service is down.
up_template = # Message template when service is up.

1 files changed, 29 insertions, 0 deletions

diff --git a/worker_test.go b/worker_test.go
index c00339c..833322c 100644
--- a/worker_test.go
+++ b/worker_test.go
@@ -94,3 +94,32 @@ func TestNewWorker(t *testing.T) {
 		test.Assert(t, `worker.Services`, tcase.expServices, wrk.Services)
 	}
 }
+
+func TestWorker_pushNotifMattermost(t *testing.T) {
+	var serverCfg = &ServerConfig{
+		BaseDir: `testdata/worker/pushNotifMattermost`,
+	}
+
+	var err = serverCfg.init()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var notifCfgMattermost = serverCfg.Notifs[0]
+
+	var wrk *worker
+	wrk, err = newWorker(*serverCfg)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var scanReport = &ScanReport{
+		ID:    `dummy_http`,
+		Error: `503 internal server error`,
+	}
+	wrk.pushNotifMattermost(notifCfgMattermost, scanReport)
+
+	var gotRequestBody = <-dhs.reqbodyq
+	var expRequestBody = `{"channel":"test_webhook","text":"Service dummy_http is down: 503 internal server error"}`
+	test.Assert(t, `request body`, expRequestBody, string(gotRequestBody))
+}