Add ability to customize upstream and stream log format

controllers/nginx/pkg/config/config_test.go

@@ -0,0 +1,27 @@
+package config
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestBuildLogFormatUpstream(t *testing.T) {
+
+	testCases := []struct {
+		useProxyProtocol bool // use proxy protocol
+		expected         string
+	}{
+		{true, fmt.Sprintf(logFormatUpstream, "$proxy_protocol_addr")},
+		{false, fmt.Sprintf(logFormatUpstream, "$remote_addr")},
+	}
+
+	for _, testCase := range testCases {
+
+		result := BuildLogFormatUpstream(testCase.useProxyProtocol)
+
+		if result != testCase.expected {
+			t.Errorf(" expected %v but return %v", testCase.expected, result)
+		}
+
+	}
+}