1 files changed, 111 insertions, 0 deletions
diff --git a/dictionaryvalidation/src/main/java/org/onap/validation/yaml/process/YamlValidationProcess.java b/dictionaryvalidation/src/main/java/org/onap/validation/yaml/process/YamlValidationProcess.java
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+++ b/dictionaryvalidation/src/main/java/org/onap/validation/yaml/process/YamlValidationProcess.java
@@ -0,0 +1,111 @@
+/*
+ * 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.process;
+
+import org.onap.validation.yaml.error.SchemaValidationError;
+import org.onap.validation.yaml.exception.YamlProcessingException;
+import org.onap.validation.yaml.model.YamlDocument;
+import org.onap.validation.yaml.schema.YamlSchema;
+import org.onap.validation.yaml.schema.node.YamlSchemaNode;
+
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Queue;
+
+public class YamlValidationProcess {
+
+    private final Queue<YamlValidationStep> validationSteps;
+    private final List<SchemaValidationError> errors;
+    private final YamlSchema schema;
+    private final YamlDocument document;
+
+    public YamlValidationProcess(YamlSchema schema, YamlDocument document) {
+        this.schema = schema;
+        this.document = document;
+        errors = new ArrayList<>();
+        validationSteps = new LinkedList<>();
+    }
+
+    public List<SchemaValidationError> validate() throws YamlProcessingException {
+        validationSteps.add(new YamlValidationStep(schema.getRootNodes(), document));
+        while (!validationSteps.isEmpty()) {
+            YamlValidationStep nextValidationNode = validationSteps.poll();
+            validateStep(nextValidationNode);
+        }
+        return errors;
+    }
+
+    private void validateStep(YamlValidationStep validationNode)
+        throws YamlProcessingException {
+        for (YamlSchemaNode schemaNode : validationNode.getSchemaNodes()) {
+            validateNode(validationNode.getDocument(), schemaNode);
+        }
+    }
+
+    private void validateNode(YamlDocument document, YamlSchemaNode schemaNode)
+        throws YamlProcessingException {
+
+        if (document.containsKey(schemaNode.getName())) {
+            if (schemaNode.isContainingSubStructure()) {
+                addNextLevelNodeToValidationNodesQueue(document, schemaNode);
+            } else if (!isValueOfNodeInAcceptedValuesList(document, schemaNode)) {
+                addIncorrectValueError(document, schemaNode);
+            }
+        } else if (schemaNode.isRequired()) {
+            addRequiredKeyNotFoundError(schemaNode);
+        }
+    }
+
+    private boolean isValueOfNodeInAcceptedValuesList(YamlDocument document, YamlSchemaNode node) {
+        return node.getAcceptedValues().isEmpty() ||
+            node.getAcceptedValues().containsAll(
+                document.getListOfValues(node.getName()).getParameters()
+            );
+    }
+
+    private void addNextLevelNodeToValidationNodesQueue(YamlDocument document, YamlSchemaNode node)
+        throws YamlProcessingException {
+        validationSteps.add(
+            new YamlValidationStep(
+                node.getNextNodes(),
+                document.getSubStructure(node.getName())
+            )
+        );
+    }
+
+    private void addRequiredKeyNotFoundError(YamlSchemaNode node) {
+        errors.add(
+            new SchemaValidationError(
+                node.getPath(),
+                String.format("Key not found: %s", node.getName())
+            )
+        );
+    }
+
+    private void addIncorrectValueError(YamlDocument document, YamlSchemaNode node) {
+        errors.add(
+            new SchemaValidationError(
+                node.getPath() + node.getName(),
+                String.format(
+                    "Value(s) is/are not in array of accepted values.%n value(s):  %s%n  accepted value(s):  %s",
+                    document.getValue(node.getName()), node.getAcceptedValues())
+            )
+        );
+    }
+}