1 files changed, 58 insertions, 0 deletions
diff --git a/src/main/java/org/onap/dcae/JSonSchemasSupplier.java b/src/main/java/org/onap/dcae/JSonSchemasSupplier.java
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+++ b/src/main/java/org/onap/dcae/JSonSchemasSupplier.java
@@ -0,0 +1,58 @@
+/*
+ * ============LICENSE_START=======================================================
+ * PROJECT
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * Copyright (C) 2019 Nokia. All rights reserved.s
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+package org.onap.dcae;
+
+import com.networknt.schema.JsonSchema;
+import com.networknt.schema.JsonSchemaFactory;
+import io.vavr.Tuple2;
+import io.vavr.collection.HashMap;
+import io.vavr.collection.Map;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.nio.file.Paths;
+
+import static io.vavr.API.Tuple;
+import static java.nio.file.Files.readAllBytes;
+
+class JSonSchemasSupplier {
+
+    public Map<String, JsonSchema> loadJsonSchemas(String collectorSchemaFile) {
+        JSONObject jsonObject = new JSONObject(collectorSchemaFile);
+        return jsonObject.toMap().entrySet().stream()
+            .map(JSonSchemasSupplier::readSchemaForVersion)
+            .collect(HashMap.collector());
+    }
+
+
+    private static Tuple2<String, JsonSchema> readSchemaForVersion(java.util.Map.Entry<String, Object> versionToFilePath) {
+        try {
+            String schemaContent = new String(
+                readAllBytes(Paths.get(versionToFilePath.getValue().toString())));
+            JsonSchemaFactory factory = JsonSchemaFactory.getInstance();
+            JsonSchema schema = factory.getSchema(schemaContent);
+
+            return Tuple(versionToFilePath.getKey(), schema);
+        } catch (IOException e) {
+            throw new ApplicationException("Could not read schema from path: " + versionToFilePath.getValue(), e);
+        }
+    }
+}