1 files changed, 83 insertions, 0 deletions
diff --git a/dictionaryvalidation/src/main/java/org/onap/validation/yaml/YamlContentValidator.java b/dictionaryvalidation/src/main/java/org/onap/validation/yaml/YamlContentValidator.java
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+++ b/dictionaryvalidation/src/main/java/org/onap/validation/yaml/YamlContentValidator.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2020 Nokia
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.onap.validation.yaml;
+
+import org.onap.validation.yaml.error.SchemaValidationError;
+import org.onap.validation.yaml.error.YamlDocumentValidationError;
+import org.onap.validation.yaml.exception.YamlProcessingException;
+import org.onap.validation.yaml.model.YamlDocument;
+import org.onap.validation.yaml.model.YamlDocumentFactory;
+import org.onap.validation.yaml.schema.YamlSchema;
+import org.onap.validation.yaml.schema.YamlSchemaFactory;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class YamlContentValidator {
+
+    private static final int FIRST_DOCUMENT_INDEX = 1;
+    private static final YamlLoader YAML_LOADER = new YamlLoader(new YamlDocumentFactory());
+
+    public List<YamlDocumentValidationError> validate(String pathToFile)
+            throws YamlProcessingException {
+        List<YamlDocument> documents = YAML_LOADER.loadMultiDocumentYamlFile(pathToFile);
+        return getYamlDocumentValidationErrors(documents);
+    }
+
+    public List<YamlDocumentValidationError> validate(byte[] yamlWithSchema)
+            throws YamlProcessingException {
+        List<YamlDocument> documents = YAML_LOADER.loadMultiDocumentYaml(yamlWithSchema);
+        return getYamlDocumentValidationErrors(documents);
+    }
+
+    private List<YamlDocumentValidationError> getYamlDocumentValidationErrors(List<YamlDocument> documents) throws YamlProcessingException {
+        if (documents.isEmpty()) {
+            throw new YamlProcessingException("Dictionary YAML file is empty");
+        } else {
+            return validateDocuments(documents);
+        }
+    }
+
+    private List<YamlDocumentValidationError> validateDocuments(List<YamlDocument> documents)
+            throws YamlProcessingException {
+
+        List<YamlDocumentValidationError> yamlFileValidationErrors = new ArrayList<>();
+        YamlSchema schema = extractSchema(documents);
+        YamlValidator validator = new YamlValidator(schema);
+
+        for (int index = FIRST_DOCUMENT_INDEX; index < documents.size(); index++) {
+            List<SchemaValidationError> validationErrors = validator.validate(documents.get(index));
+            yamlFileValidationErrors.addAll(transformErrors(index, validationErrors));
+        }
+
+        return yamlFileValidationErrors;
+    }
+
+    private List<YamlDocumentValidationError> transformErrors(int index, List<SchemaValidationError> validationErrors) {
+        return validationErrors
+                .stream()
+                .map(error -> new YamlDocumentValidationError(index, error.getPath(), error.getMessage()))
+                .collect(Collectors.toList());
+    }
+
+    private YamlSchema extractSchema(List<YamlDocument> documents) throws YamlProcessingException {
+        return new YamlSchemaFactory().createTreeStructuredYamlSchema(documents.get(0));
+    }
+
+}