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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2017 Intel Corp. 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.vfc;
import java.util.HashMap;
import java.util.Map;
import org.drools.core.WorkingMemory;
import org.onap.policy.vfc.util.Serialization;
import org.onap.policy.drools.system.PolicyEngine;
import org.onap.policy.rest.RESTManager;
import org.onap.policy.rest.RESTManager.Pair;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.gson.JsonSyntaxException;
public final class VFCManager implements Runnable {
private static final String SYSTEM_LS = System.lineSeparator();
private String vfcUrlBase;
private String username;
private String password;
private VFCRequest vfcRequest;
private WorkingMemory workingMem;
private static final Logger logger = LoggerFactory.getLogger(VFCManager.class);
private static final Logger netLogger = LoggerFactory.getLogger(org.onap.policy.drools.event.comm.Topic.NETWORK_LOGGER);
// The REST manager used for processing REST calls for this VFC manager
private RESTManager restManager;
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();
setVFCParams(getPEManagerEnvProperty("vfc.url"), getPEManagerEnvProperty("vfc.username"), getPEManagerEnvProperty("vfc.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);
netLogger.info("[OUT|{}|{}|]{}{}", "VFC", vfcUrl, SYSTEM_LS, 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.a != 202) {
logger.warn("VFC Heal Restcall failed");
return;
}
try {
VFCResponse response = Serialization.gsonPretty.fromJson(httpDetails.b, VFCResponse.class);
netLogger.info("[IN|{}|{}|]{}{}", "VFC", vfcUrl, SYSTEM_LS, httpDetails.b);
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) {
netLogger.info("[OUT|{}|{}|]", "VFC", urlGet);
Pair<Integer, String> httpDetailsGet = restManager.get(urlGet, username, password, headers);
responseGet = Serialization.gsonPretty.fromJson(httpDetailsGet.b, VFCResponse.class);
netLogger.info("[IN|{}|{}|]{}{}", "VFC", urlGet, SYSTEM_LS, httpDetailsGet.b);
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.a == 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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