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/*
* ============LICENSE_START===================================================
* Copyright (c) 2018 Amdocs
* ============================================================================
* 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.pomba.contextaggregator.rest;
import java.net.InetAddress;
import java.text.SimpleDateFormat;
import java.util.Base64;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedHashMap;
import javax.ws.rs.core.MultivaluedMap;
import org.eclipse.jetty.util.security.Password;
import org.onap.aai.restclient.client.Headers;
import org.onap.aai.restclient.client.OperationResult;
import org.onap.aai.restclient.client.RestClient;
import org.onap.pomba.contextaggregator.builder.ContextBuilder;
import org.onap.pomba.contextaggregator.datatypes.POAEvent;
import org.onap.pomba.contextaggregator.exception.ContextAggregatorError;
import org.onap.pomba.contextaggregator.exception.ContextAggregatorException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import org.springframework.web.util.UriComponents;
import org.springframework.web.util.UriComponentsBuilder;
public class RestRequest {
private static final String SERVICE_INSTANCE_ID = "serviceInstanceId";
private static final String MODEL_VERSION_ID = "modelVersionId";
private static final String MODEL_INVARIANT_ID = "modelInvariantId";
private static final String APP_NAME = "context-aggregator";
private static final String BASIC_AUTH = "Basic ";
private static final String MDC_REQUEST_ID = "RequestId";
private static final String MDC_SERVER_FQDN = "ServerFQDN";
private static final String MDC_SERVICE_NAME = "ServiceName";
private static final String MDC_PARTNER_NAME = "PartnerName";
private static final String MDC_START_TIME = "StartTime";
private static final String MDC_SERVICE_INSTANCE_ID = "ServiceInstanceId";
private static final String MDC_INVOCATION_ID = "InvocationID";
private static final String MDC_CLIENT_ADDRESS = "ClientAddress";
private static final String MDC_STATUS_CODE = "StatusCode";
private static final String MDC_RESPONSE_CODE = "ResponseCode";
private static final String MDC_INSTANCE_UUID = "InstanceId";
private static Logger log = LoggerFactory.getLogger(RestRequest.class);
private RestRequest() {
// intentionally empty
}
/**
* Retrieves the model data from the given context builder.
*
* @param builder The context builder.
* @param event The audit event.
* @return Returns the JSON response from the context builder
*/
public static String getModelData(ContextBuilder builder, POAEvent event, UUID instanceId) throws ContextAggregatorException {
initMdc(event, instanceId);
RestClient restClient = createRestClient(builder);
OperationResult result;
try {
result = restClient.get(generateUri(builder, event), generateHeaders(event, builder),
MediaType.APPLICATION_JSON_TYPE);
} catch (Exception e) {
log.error("Exception in Rest call", e);
throw new ContextAggregatorException(ContextAggregatorError.FAILED_TO_GET_MODEL_DATA,
builder.getContextName(), e.getMessage());
}
if (result == null) {
MDC.put(MDC_STATUS_CODE, "ERROR");
throw new ContextAggregatorException(ContextAggregatorError.FAILED_TO_GET_MODEL_DATA,
builder.getContextName(), "Null result");
}
if (result.wasSuccessful()) {
MDC.put(MDC_RESPONSE_CODE, String.valueOf(result.getResultCode()));
MDC.put(MDC_STATUS_CODE, "COMPLETE");
log.info("Retrieved model data for '{}' context builder. Result: {}", builder.getContextName(), result.getResult());
return result.getResult();
}
// failed! throw Exception:
MDC.put(MDC_STATUS_CODE, "ERROR");
throw new ContextAggregatorException(ContextAggregatorError.FAILED_TO_GET_MODEL_DATA, builder.getContextName(),
result.getFailureCause());
}
private static void initMdc(POAEvent event, UUID instanceId) {
MDC.clear();
MDC.put(MDC_REQUEST_ID, event.getxTransactionId());
MDC.put(MDC_SERVICE_NAME, APP_NAME);
MDC.put(MDC_SERVICE_INSTANCE_ID, event.getServiceInstanceId());
MDC.put(MDC_PARTNER_NAME, event.getxFromAppId());
MDC.put(MDC_START_TIME, new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX").format(new Date()));
MDC.put(MDC_INVOCATION_ID, UUID.randomUUID().toString());
MDC.put(MDC_INSTANCE_UUID, instanceId.toString());
try {
MDC.put(MDC_CLIENT_ADDRESS, InetAddress.getLocalHost().getCanonicalHostName());
} catch (Exception e) {
// If, for some reason we are unable to get the canonical host name,
// we
// just want to leave the field null.
log.info("Could not get canonical host name for " + MDC_SERVER_FQDN + ", leaving field null");
}
}
private static RestClient createRestClient(ContextBuilder builder) {
return new RestClient()
.connectTimeoutMs(builder.getConnectionTimeout()).readTimeoutMs(builder.getReadTimeout());
}
private static String generateUri(ContextBuilder builder, POAEvent event) {
UriComponents uriComponents = UriComponentsBuilder.newInstance().scheme(builder.getProtocol())
.host(builder.getHost()).port(builder.getPort()).path(builder.getBaseUri())
.queryParam(SERVICE_INSTANCE_ID, event.getServiceInstanceId())
.queryParam(MODEL_VERSION_ID, event.getModelVersionId())
.queryParam(MODEL_INVARIANT_ID, event.getModelInvariantId()).build().encode();
return uriComponents.toUriString();
}
private static Map<String, List<String>> generateHeaders(POAEvent event, ContextBuilder builder) {
MultivaluedMap<String, String> headers = new MultivaluedHashMap<>();
headers.add(Headers.FROM_APP_ID, event.getxFromAppId());
headers.add(Headers.TRANSACTION_ID, event.getxTransactionId());
headers.add(Headers.AUTHORIZATION, getBasicAuthString(builder));
return headers;
}
private static String getBasicAuthString(ContextBuilder builder) {
String encodedString = Base64.getEncoder()
.encodeToString((builder.getUsername() + ":" + Password.deobfuscate(builder.getPassword())).getBytes());
return BASIC_AUTH + encodedString;
}
}
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