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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2017-2018 Intel Corp, AT&T. All rights reserved.
* Modifications Copyright (C) 2018-2019 AT&T Corporation. All rights reserved.
* Modifications Copyright (C) 2019 Samsung Electronics Co., Ltd.
* ================================================================================
* 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.vfc;
import com.google.gson.JsonSyntaxException;
import java.util.HashMap;
import java.util.Map;
import org.drools.core.WorkingMemory;
import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
import org.onap.policy.common.endpoints.utils.NetLoggerUtil;
import org.onap.policy.common.endpoints.utils.NetLoggerUtil.EventType;
import org.onap.policy.drools.system.PolicyEngine;
import org.onap.policy.rest.RestManager;
import org.onap.policy.rest.RestManager.Pair;
import org.onap.policy.vfc.util.Serialization;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public final class VfcManager implements Runnable {
private String vfcUrlBase;
private String username;
private String password;
private VfcRequest vfcRequest;
private WorkingMemory workingMem;
private static final Logger logger = LoggerFactory.getLogger(VfcManager.class);
// The REST manager used for processing REST calls for this VFC manager
private RestManager restManager;
/**
* Constructor.
*
* @param wm Drools working memory
* @param request request
*/
public VfcManager(WorkingMemory wm, VfcRequest request) {
if (wm == null || request == null) {
throw new IllegalArgumentException(
"the parameters \"wm\" and \"request\" on the VfcManager constructor may not be null");
}
workingMem = wm;
vfcRequest = request;
restManager = new RestManager();
// use getPEManagerEnvProperty() for required properties; others are optional
setVfcParams(getPeManagerEnvProperty("vfc.url"), PolicyEngine.manager.getEnvironmentProperty("vfc.username"),
PolicyEngine.manager.getEnvironmentProperty("vfc.password"));
}
/**
* Set the parameters.
*
* @param baseUrl base URL
* @param name username
* @param pwd password
*/
public void setVfcParams(String baseUrl, String name, String pwd) {
vfcUrlBase = baseUrl + "/api/nslcm/v1";
username = name;
password = pwd;
}
@Override
public void run() {
Map<String, String> headers = new HashMap<>();
Pair<Integer, String> httpDetails;
VfcResponse responseError = new VfcResponse();
responseError.setResponseDescriptor(new VfcResponseDescriptor());
responseError.getResponseDescriptor().setStatus("error");
headers.put("Accept", "application/json");
String vfcUrl = vfcUrlBase + "/ns/" + vfcRequest.getNsInstanceId() + "/heal";
try {
String vfcRequestJson = Serialization.gsonPretty.toJson(vfcRequest);
NetLoggerUtil.log(EventType.OUT, CommInfrastructure.REST, vfcUrl, vfcRequestJson);
httpDetails = restManager.post(vfcUrl, username, password, headers, "application/json", vfcRequestJson);
} catch (Exception e) {
logger.error(e.getMessage(), e);
workingMem.insert(responseError);
return;
}
if (httpDetails == null) {
workingMem.insert(responseError);
return;
}
if (httpDetails.first != 202) {
logger.warn("VFC Heal Restcall failed");
return;
}
try {
VfcResponse response = Serialization.gsonPretty.fromJson(httpDetails.second, VfcResponse.class);
NetLoggerUtil.log(EventType.IN, CommInfrastructure.REST, vfcUrl, httpDetails.second);
String body = Serialization.gsonPretty.toJson(response);
logger.debug("Response to VFC Heal post:");
logger.debug(body);
String jobId = response.getJobId();
int attemptsLeft = 20;
String urlGet = vfcUrlBase + "/jobs/" + jobId;
VfcResponse responseGet = null;
while (attemptsLeft-- > 0) {
NetLoggerUtil.getNetworkLogger().info("[OUT|{}|{}|]", "VFC", urlGet);
Pair<Integer, String> httpDetailsGet = restManager.get(urlGet, username, password, headers);
responseGet = Serialization.gsonPretty.fromJson(httpDetailsGet.second, VfcResponse.class);
NetLoggerUtil.log(EventType.IN, CommInfrastructure.REST, vfcUrl, httpDetailsGet.second);
responseGet.setRequestId(vfcRequest.getRequestId().toString());
body = Serialization.gsonPretty.toJson(responseGet);
logger.debug("Response to VFC Heal get:");
logger.debug(body);
String responseStatus = responseGet.getResponseDescriptor().getStatus();
if (httpDetailsGet.first == 200
&& ("finished".equalsIgnoreCase(responseStatus) || "error".equalsIgnoreCase(responseStatus))) {
logger.debug("VFC Heal Status {}", responseGet.getResponseDescriptor().getStatus());
workingMem.insert(responseGet);
break;
}
Thread.sleep(20000);
}
if ((attemptsLeft <= 0) && (responseGet != null) && (responseGet.getResponseDescriptor() != null)
&& (responseGet.getResponseDescriptor().getStatus() != null)
&& (!responseGet.getResponseDescriptor().getStatus().isEmpty())) {
logger.debug("VFC timeout. Status: ({})", responseGet.getResponseDescriptor().getStatus());
workingMem.insert(responseGet);
}
} catch (JsonSyntaxException e) {
logger.error("Failed to deserialize into VfcResponse {}", e.getLocalizedMessage(), e);
} catch (InterruptedException e) {
logger.error("Interrupted exception: {}", e.getLocalizedMessage(), e);
Thread.currentThread().interrupt();
} catch (Exception e) {
logger.error("Unknown error deserializing into VfcResponse {}", e.getLocalizedMessage(), e);
}
}
/**
* Protected setter for rest manager to allow mocked rest manager to be used for testing.
*
* @param restManager the test REST manager
*/
protected void setRestManager(final RestManager restManager) {
this.restManager = restManager;
}
/**
* This method reads and validates environmental properties coming from the policy engine. Null
* properties cause an {@link IllegalArgumentException} runtime exception to be thrown
*
* @param string the name of the parameter to retrieve
* @return the property value
*/
private String getPeManagerEnvProperty(String enginePropertyName) {
String enginePropertyValue = PolicyEngine.manager.getEnvironmentProperty(enginePropertyName);
if (enginePropertyValue == null) {
throw new IllegalArgumentException("The value of policy engine manager environment property \""
+ enginePropertyName + "\" may not be null");
}
return enginePropertyValue;
}
}
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