Added distributed transaction support through a two phase commit protocol
Change-Id: I85d64234a24823fee8b3c2ea830abbb6867dad38
diff --git a/cli/src/main/java/org/onosproject/cli/net/TransactionsCommand.java b/cli/src/main/java/org/onosproject/cli/net/TransactionsCommand.java
new file mode 100644
index 0000000..6013a38
--- /dev/null
+++ b/cli/src/main/java/org/onosproject/cli/net/TransactionsCommand.java
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2015 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.cli.net;
+
+import java.util.Collection;
+
+import org.apache.karaf.shell.commands.Command;
+import org.apache.karaf.shell.commands.Option;
+import org.onlab.util.Tools;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.store.service.StorageAdminService;
+import org.onosproject.store.service.Transaction;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * CLI to work with database transactions in the system.
+ */
+@Command(scope = "onos", name = "transactions",
+ description = "Utility for viewing and redriving database transactions")
+public class TransactionsCommand extends AbstractShellCommand {
+
+ @Option(name = "-r", aliases = "--redrive",
+ description = "Redrive stuck transactions while removing those that are done",
+ required = false, multiValued = false)
+ private boolean redrive = false;
+
+ private static final String FMT = "%-20s %-15s %-10s";
+
+ /**
+ * Displays transactions as text.
+ *
+ * @param transactions transactions
+ */
+ private void displayTransactions(Collection<Transaction> transactions) {
+ print("---------------------------------------------");
+ print(FMT, "Id", "State", "Updated");
+ print("---------------------------------------------");
+ transactions.forEach(txn -> print(FMT, txn.id(), txn.state(), Tools.timeAgo(txn.lastUpdated())));
+ if (transactions.size() > 0) {
+ print("---------------------------------------------");
+ }
+ }
+
+ /**
+ * Converts collection of transactions into a JSON object.
+ *
+ * @param transactions transactions
+ */
+ private JsonNode json(Collection<Transaction> transactions) {
+ ObjectMapper mapper = new ObjectMapper();
+ ArrayNode txns = mapper.createArrayNode();
+
+ // Create a JSON node for each transaction
+ transactions.stream().forEach(txn -> {
+ ObjectNode txnNode = mapper.createObjectNode();
+ txnNode.put("id", txn.id())
+ .put("state", txn.state().toString())
+ .put("lastUpdated", txn.lastUpdated());
+ txns.add(txnNode);
+ });
+
+ return txns;
+ }
+
+ @Override
+ protected void execute() {
+ StorageAdminService storageAdminService = get(StorageAdminService.class);
+
+ if (redrive) {
+ storageAdminService.redriveTransactions();
+ return;
+ }
+
+ Collection<Transaction> transactions = storageAdminService.getTransactions();
+ if (outputJson()) {
+ print("%s", json(transactions));
+ } else {
+ displayTransactions(transactions);
+ }
+ }
+}