[ONOS-6756] Replicate node version information for ISSU
Change-Id: Ibd31c573990f2732b7abf8615ca914ffb77615ec
diff --git a/core/net/src/main/java/org/onosproject/core/impl/VersionManager.java b/core/net/src/main/java/org/onosproject/core/impl/VersionManager.java
new file mode 100644
index 0000000..c683205
--- /dev/null
+++ b/core/net/src/main/java/org/onosproject/core/impl/VersionManager.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2017-present Open Networking Laboratory
+ *
+ * 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.
+ */
+package org.onosproject.core.impl;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.List;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Service;
+import org.onosproject.core.Version;
+import org.onosproject.core.VersionService;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Node version service implementation.
+ */
+@Component(immediate = true)
+@Service
+public class VersionManager implements VersionService {
+
+ private final Logger log = LoggerFactory.getLogger(getClass());
+
+ private static final File VERSION_FILE = new File("../VERSION");
+ private static Version version = Version.version("1.11.0-SNAPSHOT");
+
+ @Activate
+ protected void activate() {
+ try {
+ Path path = Paths.get(VERSION_FILE.getPath());
+ List<String> versionLines = Files.readAllLines(path);
+ if (versionLines != null && !versionLines.isEmpty()) {
+ version = Version.version(versionLines.get(0));
+ }
+ } catch (IOException e) {
+ // version file not found, using default
+ log.trace("Version file not found", e);
+ }
+ }
+
+ @Override
+ public Version version() {
+ return version;
+ }
+}
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