Improve logging performance

src/main/java/com/networknt/schema/AdditionalPropertiesValidator.java

@@ -77,7 +77,7 @@ private void addToEvaluatedProperties(String propertyPath) {
     }
 
     public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String at) {
-        if (logger.isDebugEnabled()) debug(logger, node, rootNode, at);
+        debug(logger, node, rootNode, at);
 
         Set<ValidationMessage> errors = new LinkedHashSet<ValidationMessage>();
         if (!node.isObject()) {

src/main/java/com/networknt/schema/BaseJsonValidator.java

@@ -151,9 +151,7 @@ protected ValidationMessage buildValidationMessage(String at, String... argument
     }
 
     protected void debug(Logger logger, JsonNode node, JsonNode rootNode, String at) {
-        if (logger.isDebugEnabled()) {
-            logger.debug("validate( " + node + ", " + rootNode + ", " + at + ")");
-        }
+        logger.debug("validate( {}, {}, {})", node, rootNode, at);
     }
 
     protected ValidatorTypeCode getValidatorType() {

src/main/java/com/networknt/schema/DateTimeValidator.java

@@ -79,7 +79,7 @@ private boolean tryParse(Runnable parser) {
             parser.run();
             return true;
         } catch (Exception ex) {
-            logger.error("Invalid " + formatName + ": " + ex.getMessage());
+            logger.error("Invalid {}: {}", formatName, ex.getMessage());
             return false;
         }
     }

src/main/java/com/networknt/schema/FormatValidator.java

@@ -63,7 +63,7 @@ public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String
                 }
             } catch (PatternSyntaxException pse) {
                 // String is considered valid if pattern is invalid
-                logger.error("Failed to apply pattern on " + at + ": Invalid RE syntax [" + format.getName() + "]", pse);
+                logger.error("Failed to apply pattern on {}: Invalid RE syntax [{}]", at, format.getName(), pse);
             }
         }
 

src/main/java/com/networknt/schema/JsonMetaSchema.java

@@ -278,7 +278,7 @@ public JsonValidator newValidator(ValidationContext validationContext, String sc
             Keyword kw = keywords.get(keyword);
             if (kw == null) {
                 if (UNKNOWN_KEYWORDS.put(keyword, keyword) == null) {
-                    logger.warn("Unknown keyword " + keyword + " - you should define your own Meta Schema. If the keyword is irrelevant for validation, just use a NonValidationKeyword");
+                    logger.warn("Unknown keyword {} - you should define your own Meta Schema. If the keyword is irrelevant for validation, just use a NonValidationKeyword", keyword);
                 }
                 return null;
             }
@@ -289,13 +289,13 @@ public JsonValidator newValidator(ValidationContext validationContext, String sc
                 logger.error("Error:", e);
                 throw (JsonSchemaException) e.getTargetException();
             } else {
-                logger.warn("Could not load validator " + keyword);
+                logger.warn("Could not load validator {}", keyword);
                 throw new JsonSchemaException(e.getTargetException());
             }
         } catch (JsonSchemaException e) {
             throw e;
         } catch (Exception e) {
-            logger.warn("Could not load validator " + keyword);
+            logger.warn("Could not load validator {}", keyword);
             throw new JsonSchemaException(e);
         }
     }

src/main/java/com/networknt/schema/JsonSchemaFactory.java

@@ -424,9 +424,7 @@ private boolean idMatchesSourceUri(final JsonMetaSchema metaSchema, final JsonNo
             return false;
         }
         boolean result = id.equals(schemaUri.toString());
-        if (logger.isDebugEnabled()) {
-            logger.debug("Matching " + id + " to " + schemaUri.toString() + ": " + result);
-        }
+        logger.debug("Matching {} to {}: {}", id, schemaUri, result);
         return result;
     }
 

src/main/java/com/networknt/schema/PatternValidator.java

@@ -75,7 +75,7 @@ public PatternValidatorJava(String schemaPath, JsonNode schemaNode, JsonSchema p
                 try {
                     compiledPattern = Pattern.compile(pattern);
                 } catch (PatternSyntaxException pse) {
-                    logger.error("Failed to compile pattern : Invalid syntax [" + pattern + "]", pse);
+                    logger.error("Failed to compile pattern : Invalid syntax [{}]", pattern, pse);
                     throw pse;
                 }
             }
@@ -100,7 +100,7 @@ public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String
                     return Collections.singleton(buildValidationMessage(at, pattern));
                 }
             } catch (PatternSyntaxException pse) {
-                logger.error("Failed to apply pattern on " + at + ": Invalid syntax [" + pattern + "]", pse);
+                logger.error("Failed to apply pattern on {}: Invalid syntax [{}]", at, pattern, pse);
             }
 
             return Collections.emptySet();
@@ -121,7 +121,7 @@ public PatternValidatorEcma262(String schemaPath, JsonNode schemaNode, JsonSchem
                 try {
                     compileRegexPattern(pattern, validationContext.getConfig() != null && validationContext.getConfig().isEcma262Validator());
                 } catch (SyntaxException se) {
-                    logger.error("Failed to compile pattern : Invalid syntax [" + pattern + "]", se);
+                    logger.error("Failed to compile pattern : Invalid syntax [{}]", pattern, se);
                     throw se;
                 }
             }
@@ -156,7 +156,7 @@ public Set<ValidationMessage> validate(JsonNode node, JsonNode rootNode, String
                     return Collections.singleton(buildValidationMessage(at, pattern));
                 }
             } catch (PatternSyntaxException pse) {
-                logger.error("Failed to apply pattern on " + at + ": Invalid syntax [" + pattern + "]", pse);
+                logger.error("Failed to apply pattern on {}: Invalid syntax [{}]", at, pattern, pse);
             }
 
             return Collections.emptySet();