+/*-
+ * ========================LICENSE_START=================================
+ * O-RAN-SC
+ * %%
+ * Copyright (C) 2019 AT&T Intellectual Property and Nokia
+ * %%
+ * 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.
+ * ========================LICENSE_END===================================
+ */
+package org.oransc.ric.portal.dashboard.controller;
+
+import java.lang.invoke.MethodHandles;
+import java.security.KeyManagementException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.servlet.http.HttpServletResponse;
+
+import org.oransc.ric.portal.dashboard.DashboardConstants;
+import org.oransc.ric.portal.dashboard.k8sapi.SimpleKubernetesClient;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.security.access.annotation.Secured;
+import org.springframework.util.Assert;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import io.swagger.annotations.ApiOperation;
+
+/**
+ * Proxies calls from the front end to a CAAS-Ingress API, which is a proxy for
+ * a Kubernetes API.
+ *
+ * If a method throws RestClientResponseException, it is handled by
+ * {@link CustomResponseEntityExceptionHandler#handleProxyMethodException(Exception, org.springframework.web.context.request.WebRequest)}
+ * which returns status 502. All other exceptions are handled by Spring which
+ * returns status 500.
+ */
+@Configuration
+@RestController
+@RequestMapping(value = CaasIngressController.CONTROLLER_PATH, produces = MediaType.APPLICATION_JSON_VALUE)
+public class CaasIngressController {
+
+ private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+
+ // Publish constants so tests are easy to write
+ public static final String CONTROLLER_PATH = DashboardConstants.ENDPOINT_PREFIX + "/caas-ingress";
+ // Endpoints
+ public static final String PODS_METHOD = "/pods";
+ // Path parameters
+ public static final String PP_CLUSTER = "cluster";
+ public static final String PP_NAMESPACE = "namespace";
+ // Parameter values
+ public static final String CLUSTER_AUX = "aux";
+ public static final String CLUSTER_PLT = "plt";
+ public static final String CLUSTER_RIC = "ric"; // alternate for PLT
+
+ private final SimpleKubernetesClient ciAuxClient;
+ private final SimpleKubernetesClient ciPltClient;
+
+ @Autowired
+ public CaasIngressController(final SimpleKubernetesClient ciAuxApi, final SimpleKubernetesClient ciPltApi)
+ throws KeyManagementException, NoSuchAlgorithmException {
+ Assert.notNull(ciAuxApi, "auxApi must not be null");
+ Assert.notNull(ciPltApi, "pltApi must not be null");
+ this.ciAuxClient = ciAuxApi;
+ this.ciPltClient = ciPltApi;
+ if (logger.isDebugEnabled())
+ logger.debug("ctor: configured with aux api {}, plt api {}", ciAuxClient.getClass().getName(),
+ ciPltClient.getClass().getName());
+ }
+
+ /*
+ * No need to parse the V1PodList, just pass thru as a string.
+ */
+ @ApiOperation(value = "Gets list of pods in the specified cluster for the specified namespace", response = String.class)
+ @GetMapping(PODS_METHOD + "/" + PP_CLUSTER + "/{" + PP_CLUSTER + "}" + "/" + PP_NAMESPACE + "/{" + PP_NAMESPACE
+ + "}")
+ @Secured({ DashboardConstants.ROLE_ADMIN, DashboardConstants.ROLE_STANDARD })
+ public String listPods(@PathVariable(PP_CLUSTER) String cluster, @PathVariable(PP_NAMESPACE) String namespace,
+ HttpServletResponse response) {
+ logger.debug("listPods: cluster {}, namespace {}", cluster, namespace);
+ if (CLUSTER_AUX.equalsIgnoreCase(cluster)) {
+ return ciAuxClient.listPods(namespace);
+ } else if (CLUSTER_PLT.equalsIgnoreCase(cluster) || CLUSTER_RIC.equalsIgnoreCase(cluster)) {
+ return ciPltClient.listPods(namespace);
+ } else {
+ logger.warn("listPods: unknown cluster {}", cluster);
+ response.setStatus(HttpStatus.BAD_REQUEST.value());
+ return null;
+ }
+ }
+
+}