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/*-
* ============LICENSE_START=======================================================
* ONAP-PDP-REST
* ================================================================================
* Copyright (C) 2017-2019 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.pdp.rest.api.services;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.commons.lang3.StringUtils;
import org.onap.policy.api.PolicyException;
import org.onap.policy.api.PolicyNameType;
import org.onap.policy.api.PushPolicyParameters;
import org.onap.policy.common.logging.flexlogger.FlexLogger;
import org.onap.policy.common.logging.flexlogger.Logger;
import org.onap.policy.xacml.api.XACMLErrorConstants;
import org.onap.policy.xacml.std.pap.StdPDPPolicy;
import org.springframework.http.HttpStatus;
public class PushPolicyService extends PdpApiService {
private static final Logger LOGGER = FlexLogger.getLogger(PushPolicyService.class.getName());
private PushPolicyParameters pushPolicyParameters = null;
private List<PolicyNameType> policyList = new ArrayList<>();
private String pdpGroup = null;
private String result = null;
/**
* Instantiates a new push policy service.
*
* @param pushPolicyParameters the push policy parameters
* @param reqId the request ID
*/
public PushPolicyService(final PushPolicyParameters pushPolicyParameters, final String reqId) {
this.pushPolicyParameters = pushPolicyParameters;
pushPolicyParameters.setRequestID(populateRequestId(pushPolicyParameters.getRequestID(), reqId));
LOGGER.info("Operation: pushPolicy - Request - " + pushPolicyParameters + ", RequestId - " + requestId);
try {
run();
specialCheck();
} catch (PolicyException e) {
result = XACMLErrorConstants.ERROR_DATA_ISSUE + e;
status = HttpStatus.BAD_REQUEST;
}
LOGGER.info(
"PushPolicyService - RequestId - " + requestId + " , Response - " + result + ", Status - " + status);
}
private void run() throws PolicyException {
// Check Validation.
if (!getValidation()) {
LOGGER.error(message);
throw new PolicyException(message);
}
// Process Results.
try {
status = HttpStatus.OK;
result = processResult();
} catch (Exception e) {
LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
status = HttpStatus.BAD_REQUEST;
throw new PolicyException(e);
}
}
private String processResult() throws PolicyException {
PAPServices papServices = new PAPServices();
String response = null;
try {
// for each policy to be pushed, we need to call pap to get the active version
// and construct the full policy name. Then the list of policy names are sent to pap
// to do the actual push.
String policyId = constructPolicyNames(papServices);
response =
(String) papServices
.callPAP(null,
new String[] {"groupId=" + pdpGroup, "policyId=" + policyId, "apiflag=api",
"operation=POST", "userId=API"},
pushPolicyParameters.getRequestID(), clientScope);
} catch (Exception e) {
LOGGER.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + e.getMessage());
throw new PolicyException(e);
}
LOGGER.debug("Final API response: " + response);
return response;
}
private void specialCheck() {
if (result.contains("BAD REQUEST") || result.contains("PE300")) {
status = HttpStatus.BAD_REQUEST;
}
}
private String constructPolicyNames(PAPServices papServices) throws PolicyException {
List<String> pushPolicyList = new ArrayList<>(policyList.size());
for (PolicyNameType policyData : policyList) {
LOGGER.info("PushPolicyService - constructPolicyNames - Policy Name is " + policyData.getPolicyName()
+ " scope is " + policyData.getPolicyScope());
// for each policy we need to get the active version to construct policyId
StdPDPPolicy selectedPolicy = papServices.pushPolicy(policyData.getPolicyScope(),
policyData.getFilePrefix(), policyData.getPolicyName(), policyData.getClientScope(),
pdpGroup.trim(), pushPolicyParameters.getRequestID());
if (selectedPolicy != null) {
pushPolicyList.add(selectedPolicy.getId());
} else {
throw new PolicyException(XACMLErrorConstants.ERROR_DATA_ISSUE + "response code of the URL is 404. "
+ "This indicates a problem with getting the version "
+ "from the PAP or the policy does not exist - " + policyData);
}
}
return String.join(",", pushPolicyList);
}
private boolean getValidation() {
// While Validating, extract the required values.
if (StringUtils.isBlank(pushPolicyParameters.getPolicyName())) {
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No Policy Name given.";
return false;
}
if (StringUtils.isBlank(pushPolicyParameters.getPolicyType())) {
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "No PolicyType given.";
return false;
}
List<String> policyNames = Arrays.asList(pushPolicyParameters.getPolicyName().split(","));
List<String> policyTypes = Arrays.asList(pushPolicyParameters.getPolicyType().split(","));
if (policyTypes.size() != 1 && (policyNames.size() != policyTypes.size())) {
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "Invalid number of PolicyTypes";
return false;
}
if ((policyNames.stream().anyMatch(StringUtils::isBlank))
|| (policyTypes.stream().anyMatch(StringUtils::isBlank))) {
message = XACMLErrorConstants.ERROR_DATA_ISSUE + "Invalid PolicyName or PolicyType";
return false;
}
if (!validatePolicyNameAndScope(policyNames, policyTypes, policyList)) {
LOGGER.warn("PushPolicyService - Failed validation in validatePolicyNameAndScope - " + message);
return false;
}
pdpGroup = pushPolicyParameters.getPdpGroup();
if (StringUtils.isBlank(pdpGroup)) {
pdpGroup = "default";
}
return true;
}
public String getResult() {
return result;
}
}
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