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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.util.Base64;
import java.util.List;
import java.util.Map;
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.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 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) throws ContextAggregatorException {
RestClient restClient = createRestClient(builder);
OperationResult result;
try {
result = restClient.get(generateUri(builder, event), generateHeaders(event.getxTransactionId(), 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) {
throw new ContextAggregatorException(ContextAggregatorError.FAILED_TO_GET_MODEL_DATA,
builder.getContextName(), "Null result");
}
if (result.wasSuccessful()) {
log.info("Retrieved model data for '{}' context builder. Result: {}", builder.getContextName(), result.getResult());
return result.getResult();
}
// failed! throw Exception:
throw new ContextAggregatorException(ContextAggregatorError.FAILED_TO_GET_MODEL_DATA, builder.getContextName(),
result.getFailureCause());
}
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(String transactionId, ContextBuilder builder) {
MultivaluedMap<String, String> headers = new MultivaluedHashMap<>();
headers.add(Headers.FROM_APP_ID, APP_NAME);
headers.add(Headers.TRANSACTION_ID, transactionId);
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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