SLI parser improvements

Update SLI parser to remove validation based on NODE_TYPE table, which
is no longer needed (was introduced prior to use of XSD schema
validation).  Also, use checksums to avoid needless recompilation
if version being loaded already exists in database.

Change-Id: Idfcba94de8fb71b17d5e0c5e69e04dee266988b1
Issue-ID: CCSDK-152
Signed-off-by: Dan Timoney <dtimoney@att.com>

1 files changed, 168 insertions, 0 deletions

diff --git a/sli/common/src/main/java/org/onap/ccsdk/sli/core/sli/SvcLogicLoader.java b/sli/common/src/main/java/org/onap/ccsdk/sli/core/sli/SvcLogicLoader.java
new file mode 100644
index 00000000..bc8c1bdf
--- /dev/null
+++ b/sli/common/src/main/java/org/onap/ccsdk/sli/core/sli/SvcLogicLoader.java
@@ -0,0 +1,168 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * openECOMP : SDN-C
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights
+ * 						reserved.
+ * ================================================================================
+ * 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.ccsdk.sli.core.sli;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class SvcLogicLoader {
+  private static final Logger LOGGER = LoggerFactory.getLogger(SvcLogicLoader.class);
+  SvcLogicStore store;
+  String directoryRoot;
+  String propFile;
+
+  public SvcLogicLoader(String directoryRoot, String propFile) {
+    store = SvcLogicParser.getStore(propFile);
+    this.directoryRoot = directoryRoot;
+    this.propFile = propFile;
+  }
+
+  public void loadAndActivate() throws IOException {
+    SvcLogicCrawler slc = new SvcLogicCrawler();
+    Files.walkFileTree(Paths.get(this.directoryRoot), slc);
+
+    loadGraphs(slc.getGraphPaths(), directoryRoot);
+
+    List<ActivationEntry> activationEntries = processActivationFiles(slc.getActivationPaths());
+    activateGraphs(activationEntries);
+  }
+
+  private List<ActivationEntry> processActivationFiles(List<Path> activationPaths) {
+    List<ActivationEntry> activationEntries = new ArrayList<ActivationEntry>();
+    for (Path activationFile : activationPaths) {
+      activationEntries.addAll(getActivationEntries(activationFile));
+    }
+    return activationEntries;
+
+  }
+
+  private void activateGraphs(List<ActivationEntry> activationEntries) {
+    for (ActivationEntry entry : activationEntries) {
+      try {
+        if (store.hasGraph(entry.module, entry.rpc, entry.version, entry.mode)) {
+          store.activate(entry.module, entry.rpc, entry.version, entry.mode);
+        } else {
+          LOGGER.error("hasGraph returned false for " + entry.toString());
+        }
+      } catch (SvcLogicException e) {
+        LOGGER.error("Failed to call hasGraph for " + entry.toString(), e);
+      }
+    }
+  }
+
+  protected List<ActivationEntry> getActivationEntries(Path activationFilePath) {
+    List<ActivationEntry> activationEntries = new ArrayList<>();
+    int lineNumber = 1;
+    try (BufferedReader br = Files.newBufferedReader(activationFilePath, StandardCharsets.US_ASCII)) {
+      String fileRead = br.readLine();
+      while (fileRead != null) {
+        String[] fields = fileRead.split("\\s");
+        if (fields.length == 4) {
+          activationEntries.add(parseActivationEntry(fields));
+        } else {
+          LOGGER.error("Activation entry [" + fileRead + "] is declared at line number " + lineNumber + " in the file " + activationFilePath + " and is invalid.");
+        }
+        fileRead = br.readLine();
+        lineNumber++;
+      }
+      return activationEntries;
+    } catch (IOException ioe) {
+      LOGGER.error("Couldn't read the activation file at " + activationFilePath, ioe);
+      return null;
+    }
+  }
+
+  protected void loadGraphs(List<Path> graphPaths, String directoryRoot) {
+    for (Path graphPath : graphPaths) {
+      try {
+        saveGraph(graphPath.toString());
+      } catch (Exception e) {
+        LOGGER.error("Couldn't load graph at " + graphPath, e);
+      }
+    }
+  }
+
+  private void saveGraph(String xmlFile) throws SvcLogicException {
+    File f = new File(xmlFile);
+    if (!f.canRead()) {
+      throw new ConfigurationException("Cannot read xml file (" + xmlFile + ")");
+    }
+
+    SvcLogicParser parser = new SvcLogicParser();
+    LinkedList<SvcLogicGraph> graphs = null;
+
+    try {
+      graphs = parser.parse(xmlFile);
+    } catch (Exception e) {
+      throw new SvcLogicException(e.getMessage(), e);
+    }
+
+    if (graphs == null) {
+      throw new SvcLogicException("Could not parse " + xmlFile);
+    }
+
+    for (Iterator<SvcLogicGraph> iter = graphs.iterator(); iter.hasNext();) {
+
+      SvcLogicGraph graph = iter.next();
+
+      try {
+        LOGGER.info("Saving " + graph.toString() + " to database");
+        store.store(graph);
+      } catch (Exception e) {
+        throw new SvcLogicException(e.getMessage(), e);
+      }
+
+    }
+  }
+
+  protected ActivationEntry parseActivationEntry(String[] fileInput) {
+    return new ActivationEntry(fileInput[0], fileInput[1], fileInput[2], fileInput[3]);
+  }
+
+  protected String getValue(String raw, String attributeName) {
+    raw = raw.substring(attributeName.length() + 1);
+    if (raw.contains(">")) {
+      raw = raw.substring(0, raw.lastIndexOf('>'));
+    }
+    if (raw.endsWith("'")) {
+      raw = raw.substring(0, raw.lastIndexOf('\''));
+    }
+    if (raw.endsWith("\"")) {
+      raw = raw.substring(0, raw.lastIndexOf('"'));
+    }
+    return raw;
+  }
+
+
+}