added logging helper

backend/api_logging.go

@@ -0,0 +1,36 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"strings"
+)
+
+// Log an api error
+func apiLogError(module string, params ...interface{}) {
+	var err error
+	args := []string{}
+
+	// Build args string and get error from params
+	for _, p := range params {
+		// We have our error
+		if e, ok := p.(error); ok {
+			err = e
+			continue
+		}
+
+		args = append(args, fmt.Sprintf("%v", p))
+	}
+
+	if err != nil {
+		log.Println(fmt.Sprintf(
+			"API :: %s(%s) :: ERROR: %v",
+			module, strings.Join(args, ", "), err,
+		))
+	} else {
+		log.Println(fmt.Sprintf(
+			"API :: %s(%s)",
+			module, strings.Join(args, ", "),
+		))
+	}
+}

backend/api_logging_test.go

@@ -0,0 +1,14 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestApiLogError(t *testing.T) {
+	err := fmt.Errorf("an unexpected error occured")
+
+	apiLogError("foo.bar", 23, "Test")
+	apiLogError("foo.bam", err)
+	apiLogError("foo.baz", 23, 42, "foo", err)
+}