[PIE-797] adding data-dictionary builtin rule

Change-Id: I08565199e34a5c88790e6879cf1e89bc9c513e92
Signed-off-by: Pierre Rioux <pierre.rioux@amdocs.com>
Issue-ID: LOG-404

2 files changed, 170 insertions, 1 deletions

diff --git a/src/main/java/org/onap/aai/validation/ruledriven/rule/builtin/DataDictionary.java b/src/main/java/org/onap/aai/validation/ruledriven/rule/builtin/DataDictionary.java
new file mode 100644
index 0000000..cddeb85
--- /dev/null
+++ b/src/main/java/org/onap/aai/validation/ruledriven/rule/builtin/DataDictionary.java
@@ -0,0 +1,156 @@
+/*
+ * ============LICENSE_START===================================================
+ * Copyright (c) 2018 Amdocs
+ * ============================================================================
+ * 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.aai.validation.ruledriven.rule.builtin;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.annotations.Expose;
+import com.google.gson.annotations.SerializedName;
+import com.sun.jersey.core.util.MultivaluedMapImpl;
+import groovy.lang.GString;
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Properties;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.MultivaluedMap;
+import org.onap.aai.cl.api.Logger;
+import org.onap.aai.restclient.client.OperationResult;
+import org.onap.aai.validation.exception.ValidationServiceError;
+import org.onap.aai.validation.logging.ApplicationMsgs;
+import org.onap.aai.validation.logging.LogHelper;
+
+public class DataDictionary {
+
+    private static final Logger logger = LogHelper.INSTANCE;
+
+    private static String credentials;
+    private static String urlTemplate;
+    private static org.onap.aai.restclient.client.RestClient restClient;
+
+
+    private DataDictionary() {
+        // intentionally empty
+    }
+
+    /**
+     * Initializes this class' static variables using MethodInvokingFactoryBean
+     * @param props
+     */
+    public static void setProperties(Properties props) {
+
+        String hostport = props.getProperty("rule.datadictionary.hostport");
+        String connectTimeout = props.getProperty("rule.datadictionary.connect.timeout");
+        String readTimeout = props.getProperty("rule.datadictionary.read.timeout");
+        String uriTemplate = props.getProperty("rule.datadictionary.uri");
+
+        credentials = "Basic " + props.getProperty("rule.datadictionary.credentials");
+        urlTemplate = hostport + uriTemplate;
+        restClient = new org.onap.aai.restclient.client.RestClient()
+                .validateServerHostname(false)
+                .connectTimeoutMs(Integer.parseInt(connectTimeout))
+                .readTimeoutMs(Integer.parseInt(readTimeout));
+    }
+
+
+    /**
+     * Generates a REST request to data-dictionary to validate the given entities.
+     * URI: /commonModelElements/[entityType]~[entityName]~1.0/validateInstance
+     * Currently only "instance" is supported for entityType.
+     *
+     * @param entityType
+     * @param entityName
+     * @param entities
+     * @return
+     */
+    public static String validate(String entityType, String entityName, List<Map<GString, GString>> entities) {
+
+        logger.debug("Executing built-in rule with...");
+        for(Map<GString, GString> attributes : entities) {
+            logger.debug("   " + attributes.toString());
+        }
+
+        if(entities == null || entities.isEmpty()) {
+            final String error = "list of instances missing";
+            logger.error(ApplicationMsgs.CANNOT_VALIDATE_ERROR, error);
+            return error;
+        }
+
+        String url = MessageFormat.format(urlTemplate, entityType, entityName);
+        Gson gson = new GsonBuilder().create();
+        String payload = gson.toJson(new Request(entities));
+        OperationResult result = post(url, payload);
+
+        if(result.getResultCode() != 200 && result.getResultCode() != 204) {
+            String error = ValidationServiceError.REST_CLIENT_RESPONSE_ERROR.getMessage(result.getResultCode(), result.getFailureCause());
+            logger.error(ApplicationMsgs.CANNOT_VALIDATE_ERROR, error);
+            return result.getFailureCause();
+        }
+        return "";
+    }
+
+
+    /**
+     * Posts the payload to the URL
+     * @param url
+     * @param payload
+     * @return
+     */
+    private static OperationResult post(String url, String payload) {
+        MultivaluedMap<String, String> headers = new MultivaluedMapImpl();
+        headers.put("x-authorization", Arrays.asList(credentials));
+        return restClient.post(url, payload, headers, MediaType.APPLICATION_JSON_TYPE, MediaType.APPLICATION_JSON_TYPE);
+    }
+
+
+    /**
+     * JSON serializable class representing an instance sent to data-dictionary.
+     */
+    public static class Request {
+        @Expose
+        @SerializedName("instance")
+        private List<Object> instances;
+
+        public Request(List<Map<GString, GString>> groovyInstances) {
+            instances = new ArrayList<>();
+            for(Map<GString, GString> groovyEntry : groovyInstances) {
+                instances.add(createInstance(groovyEntry));
+            }
+        }
+
+        public List<Object> getInstance() {
+            return instances;
+        }
+
+        /**
+         * Creates an instance entry; converts Groovy's GString into a java String
+         * @param groovyMap
+         * @return
+         */
+        private Map<String, String> createInstance(Map<GString, GString> groovyMap) {
+            Map<String, String> newMap = new HashMap<>();
+            for(Map.Entry<GString, GString> groovyEntry : groovyMap.entrySet()) {
+                newMap.put(groovyEntry.getKey().toString(), groovyEntry.getValue().toString());
+            }
+            return newMap;
+        }
+    }
+}
diff --git a/src/main/resources/validation-service-beans.xml b/src/main/resources/validation-service-beans.xml
index 4482c6e..862fd13 100644
--- a/src/main/resources/validation-service-beans.xml
+++ b/src/main/resources/validation-service-beans.xml
@@ -17,9 +17,11 @@ limitations under the License.
 ============LICENSE_END=====================================================
 -->
 <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:util="http://www.springframework.org/schema/util"
 	xsi:schemaLocation="
 		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
-		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd">
+		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd
+		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
 
 	<bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" />
 
@@ -37,6 +39,8 @@ limitations under the License.
 		<constructor-arg value="file:${APP_HOME}/bundleconfig/etc/appprops/model-instance-mapping.json_conf" type="java.io.InputStream" />
 	</bean>
 
+    <util:properties id="dataDictionaryProperties" location="file:${CONFIG_HOME}/rule-data-dictionary.properties" />
+
 	<!-- ////////////////////////////////////////////////////////////////// -->
 	<!-- CONFIG BEANS -->
 	<!-- ////////////////////////////////////////////////////////////////// -->
@@ -100,6 +104,15 @@ limitations under the License.
 		<property name="authPolicyFile" value="${auth.policy.file}" />
 	</bean>
 
+	<bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
+		<property name="staticMethod" value="org.onap.aai.validation.ruledriven.rule.builtin.DataDictionary.setProperties" />
+		<property name="arguments">
+			<list>
+				<ref bean="dataDictionaryProperties" />
+			</list>
+		</property>
+	</bean>
+
 	<!-- ////////////////////////////////////////////////////////////////// -->
 	<!-- READER BEANS -->
 	<!-- ////////////////////////////////////////////////////////////////// -->