[ONOS-7144] Membership CLI Command
Change-Id: I7f36e288f3ff2ebb5a1df74123a8e1adb22cb769
diff --git a/cli/src/main/java/org/onosproject/cli/MembershipsListCommand.java b/cli/src/main/java/org/onosproject/cli/MembershipsListCommand.java
new file mode 100644
index 0000000..f1a5c42
--- /dev/null
+++ b/cli/src/main/java/org/onosproject/cli/MembershipsListCommand.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2017-present Open Networking Foundation
+ *
+ * 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;
+
+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.cluster.ClusterAdminService;
+import org.onosproject.cluster.ControllerNode;
+import org.onosproject.cluster.Member;
+import org.onosproject.cluster.MembershipService;
+
+import java.util.List;
+import java.util.Optional;
+
+import static com.google.common.collect.Lists.newArrayList;
+import static org.onosproject.utils.Comparators.MEMBERSHIP_COMPARATOR;
+
+/**
+ * Command to list the memberships in the system.
+ */
+@Command(scope = "onos", name = "memberships",
+ description = "Lists information about memberships in the system")
+public class MembershipsListCommand extends AbstractShellCommand {
+
+ @Override
+ protected void execute() {
+ MembershipService service = get(MembershipService.class);
+ ClusterAdminService clusterService = get(ClusterAdminService.class);
+
+ if (outputJson()) {
+ print("%s", json(service));
+ } else {
+ service.getGroups().forEach(group -> {
+ List<Member> members = newArrayList(group.members());
+ print("-------------------------------------------------------------------");
+ print("Version: %s, Members: %d", group.version(), members.size());
+ members.sort(MEMBERSHIP_COMPARATOR);
+ members.forEach(
+ member -> {
+ Optional<ControllerNode> controllerNode =
+ Optional.ofNullable(clusterService.getNode(member.nodeId()));
+
+ if (!controllerNode.isPresent()) {
+ print(" id=%s, version=%s, self=%s",
+ member.nodeId(),
+ member.version(),
+ member.equals(service.getLocalMember()) ? "*" : "");
+ } else {
+ ControllerNode node = controllerNode.get();
+ print(" id=%s, ip=%s, tcpPort=%s, state=%s, self=%s",
+ member.nodeId(),
+ node.ip(),
+ node.tcpPort(),
+ clusterService.getState(node.id()),
+ member.equals(service.getLocalMember()) ? "*" : "");
+ }
+ }
+ );
+ print("-------------------------------------------------------------------");
+ });
+ }
+ }
+
+ /**
+ * Produces JSON structure.
+ *
+ * @param service membership service
+ * @return json structure
+ */
+ private JsonNode json(MembershipService service) {
+ ObjectMapper mapper = new ObjectMapper();
+ ArrayNode result = mapper.createArrayNode();
+
+ service.getGroups().forEach(group -> {
+ ObjectNode groupNode = mapper.createObjectNode();
+
+ ArrayNode membersNode = mapper.createArrayNode();
+ groupNode.put("version", group.version().toString());
+ groupNode.put("members", membersNode);
+
+ group.members().forEach(member -> membersNode.add(member.nodeId().toString()));
+
+ result.add(groupNode);
+ });
+
+ return result;
+ }
+}