1 files changed, 83 insertions, 0 deletions
diff --git a/framework/src/onos/apps/metrics/src/main/java/org/onosproject/metrics/intent/cli/IntentEventsListCommand.java b/framework/src/onos/apps/metrics/src/main/java/org/onosproject/metrics/intent/cli/IntentEventsListCommand.java
new file mode 100644
index 00000000..3c8457ad
--- /dev/null
+++ b/framework/src/onos/apps/metrics/src/main/java/org/onosproject/metrics/intent/cli/IntentEventsListCommand.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2014 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.metrics.intent.cli;
+
+import java.util.List;
+
+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;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.metrics.intent.IntentMetricsService;
+import org.onosproject.net.intent.IntentEvent;
+
+/**
+ * Command to show the list of last intent events.
+ */
+@Command(scope = "onos", name = "intents-events",
+         description = "Lists the last intent events")
+public class IntentEventsListCommand extends AbstractShellCommand {
+
+    private static final String FORMAT_EVENT = "Event=%s";
+
+    @Override
+    protected void execute() {
+        IntentMetricsService service = get(IntentMetricsService.class);
+
+        if (outputJson()) {
+            print("%s", json(service.getEvents()));
+        } else {
+            for (IntentEvent event : service.getEvents()) {
+                print(FORMAT_EVENT, event);
+                print("");          // Extra empty line for clarity
+            }
+        }
+    }
+
+    /**
+     * Produces a JSON array of intent events.
+     *
+     * @param intentEvents the intent events with the data
+     * @return JSON array with the intent events
+     */
+    private JsonNode json(List<IntentEvent> intentEvents) {
+        ObjectMapper mapper = new ObjectMapper();
+        ArrayNode result = mapper.createArrayNode();
+
+        for (IntentEvent event : intentEvents) {
+            result.add(json(mapper, event));
+        }
+        return result;
+    }
+
+    /**
+     * Produces JSON object for a intent event.
+     *
+     * @param mapper the JSON object mapper to use
+     * @param intentEvent the intent event with the data
+     * @return JSON object for the intent event
+     */
+    private ObjectNode json(ObjectMapper mapper, IntentEvent intentEvent) {
+        ObjectNode result = mapper.createObjectNode();
+
+        result.put("time", intentEvent.time())
+            .put("type", intentEvent.type().toString())
+            .put("event", intentEvent.toString());
+        return result;
+    }
+}