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/*
* ================================================================================
* Copyright (c) 2018 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.dcae.analytics.web.util;
/**
* @author Rajiv Singla
*/
import java.nio.charset.Charset;
import java.util.Collections;
import java.util.Date;
import java.util.Map;
import java.util.Optional;
import javax.annotation.Nullable;
import org.onap.dcae.analytics.model.AnalyticsHttpConstants;
import org.onap.dcae.analytics.model.AnalyticsModelConstants;
import org.onap.dcae.analytics.model.configbindingservice.ConfigBindingServiceConstants;
import org.onap.dcae.analytics.model.util.supplier.CreationTimestampSupplier;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.messaging.MessageHeaders;
/**
* Provides utility methods for Analytics HTTP Operations
*
* @author Rajiv Singla
*/
public abstract class AnalyticsHttpUtils {
/**
* Creates default http headers for analytics http requests to other services like DMaaP, AAI etc with randomly
* generated request id header
*
* @return default analytics http headers
*/
public static HttpHeaders createDefaultHttpHeaders() {
return createDefaultHttpHeaders(null);
}
/**
* Creates default http headers for analytics http requests to other services like DMaaP, AAI etc
*
* @param requestId request id
*
* @return default analytics http headers
*/
public static HttpHeaders createDefaultHttpHeaders(@Nullable final String requestId) {
final HttpHeaders httpHeaders = new HttpHeaders();
// set analytics from app name header.
// Look up service name set by config service "SERVICE_NAME" environment variable or assign default value
httpHeaders.add(
AnalyticsHttpConstants.REQUEST_APP_NAME_HEADER_KEY,
ConfigBindingServiceConstants.SERVICE_NAME_ENV_VARIABLE_VALUE != null ?
ConfigBindingServiceConstants.SERVICE_NAME_ENV_VARIABLE_VALUE :
AnalyticsHttpConstants.REQUEST_APP_NAME_HEADER_DEFAULT_VALUE);
// if request id is not present create random UUID
httpHeaders.add(AnalyticsHttpConstants.REQUEST_ID_HEADER_KEY, requestId != null ?
requestId : AnalyticsWebUtils.REQUEST_ID_SUPPLIER.get());
// sub transaction id is created randomly for each http request
httpHeaders.add(AnalyticsHttpConstants.REQUEST_TRANSACTION_ID_HEADER_KEY,
AnalyticsWebUtils.RANDOM_ID_SUPPLIER.get());
// by default analytics will accept only json
httpHeaders.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON_UTF8));
httpHeaders.setContentType(MediaType.APPLICATION_JSON_UTF8);
httpHeaders.setAcceptCharset(
Collections.singletonList(Charset.forName(AnalyticsModelConstants.UTF8_CHARSET_NAME)));
return httpHeaders;
}
public static String getRequestId(final MessageHeaders messageHeaders) {
return Optional.ofNullable(messageHeaders.get(AnalyticsHttpConstants.REQUEST_ID_HEADER_KEY))
.map(requestId -> (String) requestId).orElse("UNKNOWN-REQUEST_ID");
}
public static String getTransactionId(final MessageHeaders messageHeaders) {
return Optional.ofNullable(messageHeaders.get(AnalyticsHttpConstants.REQUEST_TRANSACTION_ID_HEADER_KEY))
.map(transactionId -> (String) transactionId).orElse("UNKNOWN-TRANSACTION_ID");
}
public static Date getTimestampFromHeaders(final Map<String, Object> headers, final String headerTsKey) {
return Optional.ofNullable(headers.get(headerTsKey))
.map(ts -> CreationTimestampSupplier.getParsedDate((String) ts)).orElse(new Date());
}
public static String getRequestId(final HttpHeaders httpHeaders) {
return Optional.ofNullable(
httpHeaders.get(AnalyticsHttpConstants.REQUEST_ID_HEADER_KEY)).map(headerList ->
headerList.get(0)).orElse(AnalyticsWebUtils.REQUEST_ID_SUPPLIER.get());
}
public static String getTransactionId(final HttpHeaders httpHeaders) {
return Optional.ofNullable(
httpHeaders.get(AnalyticsHttpConstants.REQUEST_TRANSACTION_ID_HEADER_KEY)).map(headerList ->
headerList.get(0)).orElse(AnalyticsWebUtils.RANDOM_ID_SUPPLIER.get());
}
}
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