2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2019 Nordix Foundation.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.dcaegen2.collectors.datafile.tasks;
23 import com.google.gson.JsonElement;
24 import com.google.gson.JsonParser;
26 import java.io.IOException;
27 import java.io.InputStream;
29 import java.nio.file.Path;
30 import java.time.Duration;
32 import org.apache.commons.io.IOUtils;
33 import org.apache.http.HttpResponse;
34 import org.apache.http.client.methods.HttpPut;
35 import org.apache.http.entity.ByteArrayEntity;
36 import org.onap.dcaegen2.collectors.datafile.configuration.AppConfig;
37 import org.onap.dcaegen2.collectors.datafile.model.CommonFunctions;
38 import org.onap.dcaegen2.collectors.datafile.model.FilePublishInformation;
39 import org.onap.dcaegen2.collectors.datafile.model.logging.MappedDiagnosticContext;
40 import org.onap.dcaegen2.collectors.datafile.service.HttpUtils;
41 import org.onap.dcaegen2.collectors.datafile.service.producer.DmaapProducerHttpClient;
42 import org.onap.dcaegen2.services.sdk.rest.services.dmaap.client.config.DmaapPublisherConfiguration;
43 import org.slf4j.Logger;
44 import org.slf4j.LoggerFactory;
46 import org.springframework.core.io.FileSystemResource;
47 import org.springframework.http.HttpHeaders;
48 import org.springframework.http.HttpStatus;
50 import reactor.core.publisher.Mono;
53 * Publishes a file to the DataRouter.
55 * @author <a href="mailto:przemyslaw.wasala@nokia.com">Przemysław Wąsala</a> on 4/13/18
56 * @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
58 public class DataRouterPublisher {
59 private static final String X_DMAAP_DR_META = "X-DMAAP-DR-META";
60 private static final String CONTENT_TYPE = "application/octet-stream";
61 private static final String NAME_JSON_TAG = "name";
62 private static final String INTERNAL_LOCATION_JSON_TAG = "internalLocation";
63 private static final String CONTEXT_JSON_TAG = "context";
64 private static final String PUBLISH_TOPIC = "publish";
65 private static final String DEFAULT_FEED_ID = "1";
67 private static final Logger logger = LoggerFactory.getLogger(DataRouterPublisher.class);
68 private final AppConfig datafileAppConfig;
69 private DmaapProducerHttpClient dmaapProducerReactiveHttpClient;
71 public DataRouterPublisher(AppConfig datafileAppConfig) {
72 this.datafileAppConfig = datafileAppConfig;
78 * @param publishInfo information about the file to publish
79 * @param numRetries the maximal number of retries if the publishing fails
80 * @param firstBackoff the time to delay the first retry
81 * @return the (same) filePublishInformation
83 public Mono<FilePublishInformation> publishFile(FilePublishInformation publishInfo, long numRetries,
84 Duration firstBackoff) {
85 MDC.setContextMap(publishInfo.getContext());
86 logger.trace("publishFile called with arg {}", publishInfo);
87 dmaapProducerReactiveHttpClient = resolveClient();
89 return Mono.just(publishInfo) //
91 .flatMap(this::publishFile) //
92 .flatMap(httpStatus -> handleHttpResponse(httpStatus, publishInfo)) //
93 .retryBackoff(numRetries, firstBackoff);
96 private Mono<HttpStatus> publishFile(FilePublishInformation publishInfo
98 logger.trace("Entering publishFile with {}", publishInfo);
100 HttpPut put = new HttpPut();
101 prepareHead(publishInfo, put);
102 prepareBody(publishInfo, put);
103 dmaapProducerReactiveHttpClient.addUserCredentialsToHead(put);
105 HttpResponse response =
106 dmaapProducerReactiveHttpClient.getDmaapProducerResponseWithRedirect(put, publishInfo.getContext());
107 logger.trace("{}", response);
108 return Mono.just(HttpStatus.valueOf(response.getStatusLine().getStatusCode()));
109 } catch (Exception e) {
110 logger.warn("Unable to send file to DataRouter. Data: {}", publishInfo.getInternalLocation(), e);
111 return Mono.error(e);
115 private void prepareHead(FilePublishInformation publishInfo, HttpPut put) {
116 put.addHeader(HttpHeaders.CONTENT_TYPE, CONTENT_TYPE);
117 JsonElement metaData = new JsonParser().parse(CommonFunctions.createJsonBody(publishInfo));
118 metaData.getAsJsonObject().remove(NAME_JSON_TAG).getAsString();
119 metaData.getAsJsonObject().remove(INTERNAL_LOCATION_JSON_TAG);
120 metaData.getAsJsonObject().remove(CONTEXT_JSON_TAG);
122 put.addHeader(X_DMAAP_DR_META, metaData.toString());
123 put.setURI(getPublishUri(publishInfo.getName()));
124 MappedDiagnosticContext.appendTraceInfo(put);
127 private void prepareBody(FilePublishInformation publishInfo, HttpPut put) throws IOException {
128 Path fileLocation = publishInfo.getInternalLocation();
129 try (InputStream fileInputStream = createInputStream(fileLocation)) {
130 put.setEntity(new ByteArrayEntity(IOUtils.toByteArray(fileInputStream)));
134 private URI getPublishUri(String fileName) {
135 return dmaapProducerReactiveHttpClient.getBaseUri() //
136 .pathSegment(PUBLISH_TOPIC) //
137 .pathSegment(DEFAULT_FEED_ID) //
138 .pathSegment(fileName).build();
141 private Mono<FilePublishInformation> handleHttpResponse(HttpStatus response, FilePublishInformation publishInfo) {
142 MDC.setContextMap(publishInfo.getContext());
143 if (HttpUtils.isSuccessfulResponseCode(response.value())) {
144 logger.trace("Publish to DR successful!");
145 return Mono.just(publishInfo);
147 logger.warn("Publish to DR unsuccessful, response code: {}", response);
148 return Mono.error(new Exception("Publish to DR unsuccessful, response code: " + response));
152 InputStream createInputStream(Path filePath) throws IOException {
153 FileSystemResource realResource = new FileSystemResource(filePath);
154 return realResource.getInputStream();
157 DmaapPublisherConfiguration resolveConfiguration() {
158 return datafileAppConfig.getDmaapPublisherConfiguration();
161 DmaapProducerHttpClient resolveClient() {
162 return new DmaapProducerHttpClient(resolveConfiguration());