[ONOS-8014] Implement kubernetes namespace store and manager
Change-Id: I86200d9a49a7935738e6599829d297196ab50131
diff --git a/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/cli/K8sNamespaceListCommand.java b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/cli/K8sNamespaceListCommand.java
new file mode 100644
index 0000000..4d69082
--- /dev/null
+++ b/apps/k8s-networking/app/src/main/java/org/onosproject/k8snetworking/cli/K8sNamespaceListCommand.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2019-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.k8snetworking.cli;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+import com.google.common.collect.Lists;
+import io.fabric8.kubernetes.api.model.Namespace;
+import io.fabric8.kubernetes.client.utils.Serialization;
+import org.apache.karaf.shell.api.action.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.k8snetworking.api.K8sNamespaceService;
+
+import java.io.IOException;
+import java.util.Comparator;
+import java.util.List;
+
+import static org.onosproject.k8snetworking.util.K8sNetworkingUtil.prettyJson;
+
+/**
+ * Lists kubernetes namespaces.
+ */
+@Command(scope = "onos", name = "k8s-namespaces",
+ description = "Lists all kubernetes namespaces")
+public class K8sNamespaceListCommand extends AbstractShellCommand {
+
+ private static final String FORMAT = "%-50s%-15s%-30s";
+
+ @Override
+ protected void doExecute() {
+ K8sNamespaceService service = get(K8sNamespaceService.class);
+ List<Namespace> namespaces = Lists.newArrayList(service.namespaces());
+ namespaces.sort(Comparator.comparing(n -> n.getMetadata().getName()));
+
+ if (outputJson()) {
+ print("%s", json(namespaces));
+ } else {
+ print(FORMAT, "Name", "Phase", "Labels");
+
+ for (Namespace namespace : namespaces) {
+
+ print(FORMAT,
+ namespace.getMetadata().getName(),
+ namespace.getStatus().getPhase(),
+ namespace.getMetadata() != null &&
+ namespace.getMetadata().getLabels() != null &&
+ !namespace.getMetadata().getLabels().isEmpty() ?
+ namespace.getMetadata().getLabels() : "");
+ }
+ }
+ }
+
+ private String json(List<Namespace> namespaces) {
+ ObjectMapper mapper = new ObjectMapper();
+ ArrayNode result = mapper.createArrayNode();
+
+ try {
+ for (Namespace namespace : namespaces) {
+ ObjectNode json = (ObjectNode) new ObjectMapper()
+ .readTree(Serialization.asJson(namespace));
+ result.add(json);
+ }
+ return prettyJson(mapper, result.toString());
+ } catch (IOException e) {
+ log.warn("Failed to parse Namespace's JSON string.");
+ return "";
+ }
+ }
+}