chore(logging): don't log a response from Mailgun with "info" level when it has 200 status.

Log it with "debug" level when its status is 200. Otherwise log a warning and include details.

Author: php-coder

src/main/java/ru/mystamps/web/support/mailgun/ApiMailgunEmailSendingStrategy.java

@@ -24,6 +24,7 @@
 import org.springframework.http.HttpEntity;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
 import org.springframework.util.LinkedMultiValueMap;
@@ -130,13 +131,23 @@ public void send(MailgunEmail email) {
 				String.class
 			);
 
-			LOG.info("Mailgun response code: {}", response.getStatusCode());
-			LOG.debug("Mailgun response headers: {}", response.getHeaders());
-			LOG.info("Mailgun response body: {}", StringUtils.remove(response.getBody(), '\n'));
+			boolean isWarning = response.getStatusCodeValue() == HttpStatus.OK.value();
+			String body = StringUtils.remove(response.getBody(), '\n');
+			logWarningOrDebug(isWarning, "Mailgun response code: {}", response.getStatusCode());
+			logWarningOrDebug(isWarning, "Mailgun response headers: {}", response.getHeaders());
+			logWarningOrDebug(isWarning, "Mailgun response body: {}", body);
 
 		} catch (UnsupportedEncodingException | RestClientException ex) {
 			throw new EmailSendingException("Can't send mail to " + email.recipientAddress(), ex);
 		}
 	}
 
+	private static void logWarningOrDebug(boolean isWarning, String msg, Object... args) {
+		if (isWarning) {
+			LOG.warn(msg, args);
+		} else {
+			LOG.debug(msg, args);
+		}
+	}
+	
 }