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/*-
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2020 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.onap.policy.controlloop.actor.aai;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.CompletableFuture;
import javax.ws.rs.client.Invocation.Builder;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.onap.policy.aai.AaiConstants;
import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
import org.onap.policy.common.endpoints.utils.NetLoggerUtil.EventType;
import org.onap.policy.common.utils.coder.StandardCoderObject;
import org.onap.policy.controlloop.actorserviceprovider.OperationOutcome;
import org.onap.policy.controlloop.actorserviceprovider.impl.HttpOperation;
import org.onap.policy.controlloop.actorserviceprovider.parameters.ControlLoopOperationParams;
import org.onap.policy.controlloop.actorserviceprovider.parameters.HttpConfig;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Superclass of A&AI operators that use "get" to perform their request and store their
* response within the context as a {@link StandardCoderObject}. The property name under
* which they are stored is ${actor}.${operation}.${targetEntity}.
*/
public class AaiGetOperation extends HttpOperation<StandardCoderObject> {
private static final Logger logger = LoggerFactory.getLogger(AaiGetOperation.class);
public static final int DEFAULT_RETRY = 3;
// operation names
public static final String TENANT = "Tenant";
// property prefixes
private static final String TENANT_KEY_PREFIX = AaiConstants.CONTEXT_PREFIX + TENANT + ".";
/**
* Operation names supported by this operator.
*/
public static final Set<String> OPERATIONS = Set.of(TENANT);
/**
* Responses that are retrieved from A&AI are placed in the operation context under
* the name "${propertyPrefix}.${targetEntity}".
*/
private final String propertyPrefix;
/**
* Constructs the object.
*
* @param params operation parameters
* @param config configuration for this operation
*/
public AaiGetOperation(ControlLoopOperationParams params, HttpConfig config) {
super(params, config, StandardCoderObject.class);
this.propertyPrefix = getFullName() + ".";
}
/**
* Gets the "context key" for the tenant query response associated with the given
* target entity.
*
* @param targetEntity target entity
* @return the "context key" for the response associated with the given target
*/
public static String getTenantKey(String targetEntity) {
return (TENANT_KEY_PREFIX + targetEntity);
}
@Override
public void generateSubRequestId(int attempt) {
setSubRequestId(String.valueOf(attempt));
}
@Override
protected CompletableFuture<OperationOutcome> startOperationAsync(int attempt, OperationOutcome outcome) {
Map<String, Object> headers = makeHeaders();
headers.put("Accept", MediaType.APPLICATION_JSON);
StringBuilder str = new StringBuilder(getClient().getBaseUrl());
String path = getPath();
WebTarget web = getClient().getWebTarget().path(path);
str.append(path);
web = addQuery(web, str, "?", "search-node-type", "vserver");
web = addQuery(web, str, "&", "filter", "vserver-name:EQUALS:" + params.getTargetEntity());
Builder webldr = web.request();
for (Entry<String, Object> header : headers.entrySet()) {
webldr.header(header.getKey(), header.getValue());
}
String url = str.toString();
logMessage(EventType.OUT, CommInfrastructure.REST, url, null);
return handleResponse(outcome, url, callback -> webldr.async().get(callback));
}
private WebTarget addQuery(WebTarget web, StringBuilder str, String separator, String name, String value) {
str.append(separator);
str.append(name);
str.append('=');
str.append(value);
return web.queryParam(name, value);
}
@Override
protected Map<String, Object> makeHeaders() {
return AaiUtil.makeHeaders(params);
}
/**
* Injects the response into the context.
*/
@Override
protected CompletableFuture<OperationOutcome> postProcessResponse(OperationOutcome outcome, String url,
Response rawResponse, StandardCoderObject response) {
String entity = params.getTargetEntity();
logger.info("{}: caching response of {} for {}", getFullName(), entity, params.getRequestId());
params.getContext().setProperty(propertyPrefix + entity, response);
return super.postProcessResponse(outcome, url, rawResponse, response);
}
/**
* Provides a default retry value, if none specified.
*/
@Override
protected int getRetry(Integer retry) {
return (retry == null ? DEFAULT_RETRY : retry);
}
}
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