From ac853c1e7186b10e34e392918af31e4ac62b45c2 Mon Sep 17 00:00:00 2001 From: Michael Hwang Date: Tue, 14 Feb 2017 15:10:16 +0000 Subject: Make first commit Transferring from original dcae project Issue-Id: DCAEGEN2-45 Change-Id: If8500f4a120ec2d27a714c8917f163beb57ee64c Signed-off-by: Michael Hwang --- .../inventory/clients/DCAEControllerClient.java | 222 +++++++++++++++++++++ 1 file changed, 222 insertions(+) create mode 100644 src/main/java/org/openecomp/dcae/inventory/clients/DCAEControllerClient.java (limited to 'src/main/java/org/openecomp/dcae/inventory/clients/DCAEControllerClient.java') diff --git a/src/main/java/org/openecomp/dcae/inventory/clients/DCAEControllerClient.java b/src/main/java/org/openecomp/dcae/inventory/clients/DCAEControllerClient.java new file mode 100644 index 0000000..adbe8b7 --- /dev/null +++ b/src/main/java/org/openecomp/dcae/inventory/clients/DCAEControllerClient.java @@ -0,0 +1,222 @@ +/*- + * ============LICENSE_START======================================================= + * dcae-inventory + * ================================================================================ + * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved. + * ================================================================================ + * 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.openecomp.dcae.inventory.clients; + +import org.openecomp.dcae.inventory.InventoryConfiguration; +import org.openecomp.dcae.inventory.exceptions.DCAEControllerClientException; +import org.openecomp.dcae.inventory.exceptions.DCAEControllerConnectionException; +import org.openecomp.dcae.inventory.exceptions.DCAEControllerTimeoutException; +import com.fasterxml.jackson.annotation.JsonIgnoreProperties; +import com.fasterxml.jackson.annotation.JsonInclude; +import com.fasterxml.jackson.annotation.JsonProperty; +import com.fasterxml.jackson.databind.ObjectMapper; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import javax.ws.rs.ProcessingException; +import javax.ws.rs.client.Client; +import javax.ws.rs.core.MediaType; +import javax.ws.rs.core.Response; +import javax.ws.rs.core.UriBuilder; +import java.io.IOException; +import java.io.InputStream; +import java.net.URI; + +import static org.glassfish.jersey.client.authentication.HttpAuthenticationFeature.*; + +/** + * Created by mhwang on 5/12/16. + */ +public class DCAEControllerClient { + + /** + * Used for JSON objects of the form: + * "hostService": {"$ref": "/services/vm-docker-host-2/instances/mtl2"} + */ + public static class Reference { + + @JsonProperty("$ref") + private String ref; + + public String getRef() { + return ref; + } + + public void setRef(String ref) { + this.ref = ref; + } + + } + + /** + * Used for the JSON objects returned from /services/{service id}/instances/{instance id} + * calls. + */ + @JsonIgnoreProperties(ignoreUnknown = true) + public static class ServiceInstance { + + @JsonProperty("status") + private String status; + + /** + * Property points to the Docker host this Docker container runs on. + * This service instance is an application to be run as a Docker container if this value is not null. + */ + @JsonProperty("hostService") + @JsonInclude(JsonInclude.Include.NON_ABSENT) + private Reference hostService; + + /** + * Property points to the CDAP cluster this CDAP application is deployed on. + * This service instance is a CDAP application if this value is not null. + */ + @JsonProperty("clusterService") + @JsonInclude(JsonInclude.Include.NON_ABSENT) + private Reference clusterService; + + /** + * Property points to the location resource that this instance is associated with. + * This property is not null when the service instance is a "pure" VM. + */ + @JsonProperty("location") + @JsonInclude(JsonInclude.Include.NON_ABSENT) + private Reference location; + + public String getStatus() { + return status; + } + + public void setStatus(String status) { + this.status = status; + } + + public Reference getHostService() { + return hostService; + } + + public void setHostService(Reference hostService) { + this.hostService = hostService; + } + + public Reference getClusterService() { + return clusterService; + } + + public void setClusterService(Reference clusterService) { + this.clusterService = clusterService; + } + + public Reference getLocation() { + return location; + } + + public void setLocation(Reference location) { + this.location = location; + } + + } + + private final static Logger LOG = LoggerFactory.getLogger(DCAEControllerClient.class); + + private final Client client; + private final InventoryConfiguration.DCAEControllerConnectionConfiguration connectionConfiguration; + + public URI constructResourceURI(String resourcePath) { + // TODO: Better way to construct this? + + // Make sure that the resource path has a "/" because the UriBuilder sucks and doesn't do it for us. + if (resourcePath.charAt(0) != '/') { + resourcePath = (new StringBuilder("/")).append(resourcePath).toString(); + } + + StringBuilder actualPath = new StringBuilder("/"); + actualPath.append(this.connectionConfiguration.getBasePath()); + actualPath.append(resourcePath); + + return UriBuilder.fromPath(actualPath.toString()).scheme("http").host(this.connectionConfiguration.getHost()) + .port(this.connectionConfiguration.getPort()).build(); + } + + public ServiceInstance getServiceInstance(String componentId) throws DCAEControllerClientException { + URI uri = constructResourceURI(componentId); + Response response = null; + + try { + response = client.target(uri).request(MediaType.APPLICATION_JSON_TYPE) + .header("Content-Type", "application/json") + .property(HTTP_AUTHENTICATION_BASIC_USERNAME, connectionConfiguration.getUser()) + .property(HTTP_AUTHENTICATION_BASIC_PASSWORD, connectionConfiguration.getPassword()).get(); + } catch (ProcessingException e) { + // Apparently the exceptions are wrapped which is not ideal because many different types of errors are embedded + // in single exception. TODO: May want to come back to split up the errors. + // Example: + // javax.ws.rs.ProcessingException: org.apache.http.conn.ConnectTimeoutException: Connect to :9998 + String message = "Connecting with DCAE controller probably timed out"; + LOG.error(message, e); + String exceptionMessage = String.format("%s: %s", message, e.getMessage()); + throw new DCAEControllerTimeoutException(exceptionMessage); + } catch (Exception e) { + String message = "Unexpected connection issue with DCAE controller"; + LOG.error(message, e); + String exceptionMessage = String.format("%s: %s", message, e.getMessage()); + throw new DCAEControllerConnectionException(exceptionMessage); + } + + if (LOG.isDebugEnabled()) { + LOG.debug(String.format("Received response from DCAE controller: %d", response.getStatus())); + } + + if (response.getStatus() == 200) { + ObjectMapper om = new ObjectMapper(); + + try { + return om.readValue((InputStream) response.getEntity(), ServiceInstance.class); + } catch (IOException e) { + throw new DCAEControllerClientException(e); + } + } + + throw new DCAEControllerClientException(String.format("Unexpected error from DCAE controller: %d", response.getStatus())); + } + + public String getLocation(ServiceInstance serviceInstance) { + if (serviceInstance.getLocation() != null) { + return serviceInstance.getLocation().getRef(); + } else if (serviceInstance.getClusterService() != null) { + // Drill down: Location is on the underlying CDAP cluster service instance + String cdapClusterRef = serviceInstance.getClusterService().getRef(); + return getLocation(getServiceInstance(cdapClusterRef)); + } else if (serviceInstance.getHostService() != null) { + // Drill down: Location is on the underlying Docker host service instance + String dockerHostRef = serviceInstance.getHostService().getRef(); + return getLocation(getServiceInstance(dockerHostRef)); + } else { + throw new DCAEControllerClientException("No valid location for service instance"); + } + } + + public DCAEControllerClient(Client client, + InventoryConfiguration.DCAEControllerConnectionConfiguration connectionConfiguration) { + this.client = client; + this.connectionConfiguration = connectionConfiguration; + } + +} -- cgit 1.2.3-korg