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Diffstat (limited to 'src/main/java/org/onap/schema/EdgeRulesLoader.java')
| -rw-r--r-- | src/main/java/org/onap/schema/EdgeRulesLoader.java | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/src/main/java/org/onap/schema/EdgeRulesLoader.java b/src/main/java/org/onap/schema/EdgeRulesLoader.java new file mode 100644 index 0000000..a990ae5 --- /dev/null +++ b/src/main/java/org/onap/schema/EdgeRulesLoader.java @@ -0,0 +1,231 @@ +/**
+ * ============LICENSE_START=======================================================
+ * org.onap.aai
+ * ================================================================================
+ * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
+ * Copyright © 2017-2018 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.schema;
+
+import com.google.common.collect.Multimap;
+import org.apache.commons.io.IOUtils;
+import org.onap.aai.cl.eelf.LoggerFactory;
+import org.onap.aai.edges.EdgeRule;
+import org.onap.aai.edges.exceptions.EdgeRuleNotFoundException;
+import org.onap.aai.edges.EdgeIngestor;
+import org.onap.aai.setup.ConfigTranslator;
+import org.onap.aai.setup.SchemaLocationsBean;
+import org.onap.aai.setup.Version;
+import org.onap.crud.exception.CrudException;
+import org.onap.crud.logging.CrudServiceMsgs;
+import org.onap.schema.util.SchemaIngestPropertyReader;
+import org.springframework.core.io.UrlResource;
+
+import javax.ws.rs.core.Response.Status;
+import java.io.*;
+import java.util.Arrays;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.function.Function;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+import java.util.stream.Collectors;
+
+public class EdgeRulesLoader {
+
+ private static Map<String, RelationshipSchema> versionContextMap =
+ new ConcurrentHashMap<> ();
+
+ static final Pattern versionPattern = Pattern.compile ( "V(\\d*)" );
+ static final String propsPrefix = "edge_properties_";
+ static final String propsSuffix = ".json";
+ final static Pattern propsFilePattern = Pattern.compile ( propsPrefix + "(.*)" + propsSuffix );
+ final static Pattern propsVersionPattern = Pattern.compile ( "v\\d*" );
+
+ private static org.onap.aai.cl.api.Logger logger =
+ LoggerFactory.getInstance ().getLogger ( EdgeRulesLoader.class.getName () );
+
+ private EdgeRulesLoader () {
+ }
+
+ /**
+ * Finds all DB Edge Rules and Edge Properties files for all OXM models.
+ *
+ * @throws CrudException
+ */
+ public static synchronized void loadModels () throws CrudException {
+ SchemaIngestPropertyReader schemaIngestPropertyReader = new SchemaIngestPropertyReader ();
+ SchemaLocationsBean schemaLocationsBean = new SchemaLocationsBean ();
+ schemaLocationsBean.setEdgeDirectory ( schemaIngestPropertyReader.getEdgeDir () );
+ ConfigTranslator configTranslator = new OxmModelConfigTranslator ( schemaLocationsBean );
+ EdgeIngestor edgeIngestor = new EdgeIngestor ( configTranslator );
+ Map<String, File> propFiles = edgePropertyFiles(schemaIngestPropertyReader);
+
+ if (logger.isDebugEnabled ()) {
+ logger.debug ( "Loading DB Edge Rules" );
+ }
+
+ for (String version : OxmModelLoader.getLoadedOXMVersions ()) {
+ try {
+ loadModel ( Version.valueOf ( version ), edgeIngestor, propFiles );
+ } catch (IOException | EdgeRuleNotFoundException e) {
+ throw new CrudException(e.getMessage (), e);
+ }
+ }
+ }
+
+ /**
+ * Loads DB Edge Rules and Edge Properties for a given version.
+ *
+ * @throws CrudException
+ */
+
+ public static synchronized void loadModels ( String v ) throws CrudException {
+ SchemaIngestPropertyReader schemaIngestPropertyReader = new SchemaIngestPropertyReader ();
+ SchemaLocationsBean schemaLocationsBean = new SchemaLocationsBean ();
+ schemaLocationsBean.setEdgeDirectory ( schemaIngestPropertyReader.getEdgeDir () );
+ ConfigTranslator configTranslator = new OxmModelConfigTranslator ( schemaLocationsBean );
+ EdgeIngestor edgeIngestor = new EdgeIngestor ( configTranslator );
+ String version = v.toUpperCase ();
+ Map<String, File> propFiles = edgePropertyFiles(schemaIngestPropertyReader);
+
+ if (logger.isDebugEnabled ()) {
+ logger.debug ( "Loading DB Edge Rules " );
+ }
+
+ try {
+ loadModel ( Version.valueOf ( version ), edgeIngestor, propFiles );
+ } catch (IOException | EdgeRuleNotFoundException e) {
+ throw new CrudException(e.getMessage (), Status.INTERNAL_SERVER_ERROR);
+ }
+ }
+
+ /**
+ * Retrieves the DB Edge Rule relationship schema for a given version.
+ *
+ * @param version - The OXM version that we want the DB Edge Rule for.
+ * @return - A RelationshipSchema of the DB Edge Rule for the OXM version.
+ * @throws CrudException
+ */
+ public static RelationshipSchema getSchemaForVersion ( String version ) throws CrudException {
+
+ // If we haven't already loaded in the available OXM models, then do so now.
+ if (versionContextMap == null || versionContextMap.isEmpty ()) {
+ loadModels ();
+ } else if (!versionContextMap.containsKey ( version )) {
+ logger.error ( CrudServiceMsgs.OXM_LOAD_ERROR, "Error loading DB Edge Rules for: " + version );
+ throw new CrudException ( "Error loading DB Edge Rules for: " + version, Status.NOT_FOUND );
+ }
+
+ return versionContextMap.get ( version );
+ }
+
+ /**
+ * Retrieves the DB Edge Rule relationship schema for all loaded OXM versions.
+ *
+ * @return - A Map of the OXM version and it's corresponding RelationshipSchema of the DB Edge Rule.
+ * @throws CrudException
+ */
+ public static Map<String, RelationshipSchema> getSchemas () throws CrudException {
+
+ // If we haven't already loaded in the available OXM models, then do so now.
+ if (versionContextMap == null || versionContextMap.isEmpty ()) {
+ loadModels ();
+ }
+ return versionContextMap;
+ }
+
+ /**
+ * Returns the latest available DB Edge Rule version.
+ *
+ * @return - A Map of the OXM version and it's corresponding RelationshipSchema of the DB Edge Rule.
+ * @throws CrudException
+ */
+ public static String getLatestSchemaVersion () throws CrudException {
+
+ // If we haven't already loaded in the available OXM models, then do so now.
+ if (versionContextMap == null || versionContextMap.isEmpty ()) {
+ loadModels ();
+ }
+
+ // If there are still no models available, then there's not much we can do...
+ if (versionContextMap.isEmpty ()) {
+ logger.error ( CrudServiceMsgs.OXM_LOAD_ERROR, "No available DB Edge Rules to get latest version for." );
+ throw new CrudException ( "No available DB Edge Rules to get latest version for.",
+ Status.INTERNAL_SERVER_ERROR );
+ }
+
+ // Iterate over the available model versions to determine which is the most
+ // recent.
+ Integer latestVersion = null;
+ String latestVersionStr = null;
+ for (String versionKey : versionContextMap.keySet ()) {
+
+ Matcher matcher = versionPattern.matcher ( versionKey.toUpperCase () );
+ if (matcher.find ()) {
+
+ int currentVersion = Integer.parseInt ( matcher.group ( 1 ) );
+
+ if ((latestVersion == null) || (currentVersion > latestVersion)) {
+ latestVersion = currentVersion;
+ latestVersionStr = versionKey;
+ }
+ }
+ }
+
+ return latestVersionStr;
+ }
+
+ /**
+ * Reset the loaded DB Edge Rule schemas
+ *
+ */
+
+ public static void resetSchemaVersionContext () {
+ versionContextMap = new ConcurrentHashMap<> ();
+ }
+
+ private static synchronized void loadModel ( Version version, EdgeIngestor edgeIngestor, Map<String, File> props)
+ throws IOException, CrudException, EdgeRuleNotFoundException {
+
+ Multimap<String, EdgeRule> edges = edgeIngestor.getAllRules ( version );
+ String edgeProps;
+ if (props.get ( version.toString().toLowerCase () ) != null) {
+ edgeProps = IOUtils.toString ( new FileInputStream ( props.get ( version.toString().toLowerCase () ) ), "UTF-8" );
+ } else {
+ throw new FileNotFoundException ( "The Edge Properties file for OXM version " + version + "was not found." );
+ }
+ if (edges != null) {
+ RelationshipSchema rs = new RelationshipSchema ( edges, edgeProps );
+ versionContextMap.put ( version.toString ().toLowerCase (), rs );
+ logger.info ( CrudServiceMsgs.LOADED_DB_RULE_FILE, version.toString () );
+ }
+ }
+
+ private static Map<String, File> edgePropertyFiles ( SchemaIngestPropertyReader dir ) throws CrudException {
+ Map<String, File> propsFiles = Arrays.stream ( new File ( dir.getEdgePropsDir () )
+ .listFiles ( ( d, name ) -> propsFilePattern.matcher ( name ).matches () ) )
+ .collect ( Collectors.toMap ( new Function<File, String> () {
+ public String apply ( File f ) {
+ Matcher m1 = propsVersionPattern.matcher ( f.getName () );
+ m1.find ();
+ return m1.group ( 0 );
+ }
+ }, f -> f ) );
+ return propsFiles;
+ }
+
+}
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