[TASK] influxdb ping on startup

database/influxdb/database.go

@@ -18,7 +18,7 @@ const (
 	CounterMeasurementFirmware    = "firmware"    // Measurement for firmware statistics
 	CounterMeasurementModel       = "model"       // Measurement for model statistics
 	CounterMeasurementAutoupdater = "autoupdater" // Measurement for autoupdater
-	batchMaxSize                  = 500
+	batchMaxSize                  = 1000
 	batchTimeout                  = 5 * time.Second
 )
 
@@ -69,10 +69,15 @@ func Connect(configuration map[string]interface{}) (database.Connection, error)
 		return nil, err
 	}
 
+	_, _, err = c.Ping(time.Millisecond * 50)
+	if err != nil {
+		return nil, err
+	}
+
 	db := &Connection{
 		config: config,
 		client: c,
-		points: make(chan *client.Point, 1000),
+		points: make(chan *client.Point, batchMaxSize),
 	}
 
 	db.wg.Add(1)

database/influxdb/database_test.go

@@ -1,6 +1,8 @@
 package influxdb
 
 import (
+	"net/http"
+	"net/http/httptest"
 	"testing"
 	"time"
 
@@ -27,6 +29,21 @@ func TestConnect(t *testing.T) {
 		"username": "",
 		"password": "",
 	})
+	assert.Nil(conn)
+	assert.Error(err)
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer srv.Close()
+
+	conn, err = Connect(map[string]interface{}{
+		"address":  srv.URL,
+		"database": "",
+		"username": "",
+		"password": "",
+	})
+
 	assert.NotNil(conn)
 	assert.NoError(err)
 }