Add better error reporting to ConfigSnapshot parser

[controller.git] / opendaylight / config / config-persister-file-xml-adapter / src / main / java / org / opendaylight / controller / config / persist / storage / file / xml / model / SnapshotHandler.java

diff --git a/opendaylight/config/config-persister-file-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/file/xml/model/SnapshotHandler.java b/opendaylight/config/config-persister-file-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/file/xml/model/SnapshotHandler.java
index dd3941040905529bf353707a48f72524b7af8e28..dacc35b83e4a7c8dfa6bb635bf97f936e6861391 100644 (file)
--- a/opendaylight/config/config-persister-file-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/file/xml/model/SnapshotHandler.java
+++ b/opendaylight/config/config-persister-file-xml-adapter/src/main/java/org/opendaylight/controller/config/persist/storage/file/xml/model/SnapshotHandler.java
@@ -7,13 +7,14 @@
  */
 package org.opendaylight.controller.config.persist.storage.file.xml.model;
 
+import com.google.common.base.Preconditions;
+import java.io.StringReader;
+import java.io.StringWriter;
 import javax.xml.bind.ValidationEventHandler;
 import javax.xml.bind.annotation.DomHandler;
 import javax.xml.transform.Source;
 import javax.xml.transform.stream.StreamResult;
 import javax.xml.transform.stream.StreamSource;
-import java.io.StringReader;
-import java.io.StringWriter;
 
 class SnapshotHandler implements DomHandler<String, StreamResult> {
 
@@ -31,6 +32,8 @@ class SnapshotHandler implements DomHandler<String, StreamResult> {
         String xml = rt.getWriter().toString();
         int beginIndex = xml.indexOf(START_TAG) + START_TAG.length();
         int endIndex = xml.indexOf(END_TAG);
+        Preconditions.checkArgument(beginIndex != -1 && endIndex != -1,
+                "Unknown element present in config snapshot(expected only configuration): %s", xml);
         return xml.substring(beginIndex, endIndex);
     }