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/*
* Copyright 2015 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.rest.resources;
import com.fasterxml.jackson.databind.node.ObjectNode;
import org.onosproject.cfg.ComponentConfigService;
import org.onosproject.cfg.ConfigProperty;
import org.onosproject.rest.AbstractWebResource;
import javax.ws.rs.DELETE;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.io.InputStream;
import java.util.Set;
import static org.onlab.util.Tools.nullIsNotFound;
/**
* Manage component configurations.
*/
@Path("configuration")
public class ComponentConfigWebResource extends AbstractWebResource {
/**
* Get all component configurations.
* Returns collection of all registered component configurations.
*
* @return 200 OK
*/
@GET
public Response getComponentConfigs() {
ComponentConfigService service = get(ComponentConfigService.class);
Set<String> components = service.getComponentNames();
ObjectNode root = mapper().createObjectNode();
components.forEach(c -> encodeConfigs(c, service.getProperties(c), root));
return ok(root).build();
}
/**
* Get configuration of the specified component.
*
* @param component component name
* @return 200 OK
*/
@GET
@Path("{component}")
public Response getComponentConfigs(@PathParam("component") String component) {
ComponentConfigService service = get(ComponentConfigService.class);
ObjectNode root = mapper().createObjectNode();
encodeConfigs(component, nullIsNotFound(service.getProperties(component),
"No such component"), root);
return ok(root).build();
}
// Encodes the specified properties as an object in the given node.
private void encodeConfigs(String component, Set<ConfigProperty> props,
ObjectNode node) {
ObjectNode compNode = mapper().createObjectNode();
node.set(component, compNode);
props.forEach(p -> compNode.put(p.name(), p.value()));
}
/**
* Selectively set configuration properties.
* Sets only the properties present in the JSON request.
*
* @param component component name
* @param request JSON configuration
* @return 200 OK
* @throws IOException to signify bad request
*/
@POST
@Path("{component}")
public Response setConfigs(@PathParam("component") String component,
InputStream request) throws IOException {
ComponentConfigService service = get(ComponentConfigService.class);
ObjectNode props = (ObjectNode) mapper().readTree(request);
props.fieldNames().forEachRemaining(k -> service.setProperty(component, k,
props.path(k).asText()));
return Response.noContent().build();
}
/**
* Selectively clear configuration properties.
* Clears only the properties present in the JSON request.
*
* @param component component name
* @param request JSON configuration
* @return 200 OK
* @throws IOException to signify bad request
*/
@DELETE
@Path("{component}")
public Response unsetConfigs(@PathParam("component") String component,
InputStream request) throws IOException {
ComponentConfigService service = get(ComponentConfigService.class);
ObjectNode props = (ObjectNode) mapper().readTree(request);
props.fieldNames().forEachRemaining(k -> service.unsetProperty(component, k));
return Response.noContent().build();
}
}
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