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/*-
* ============LICENSE_START======================================================================
* Copyright (C) 2018-2019 Nordix Foundation. 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.dcaegen2.collectors.datafile.tasks;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Duration;
import java.util.Map;
import java.util.Optional;
import org.onap.dcaegen2.collectors.datafile.configuration.AppConfig;
import org.onap.dcaegen2.collectors.datafile.configuration.FtpesConfig;
import org.onap.dcaegen2.collectors.datafile.exceptions.DatafileTaskException;
import org.onap.dcaegen2.collectors.datafile.exceptions.NonRetryableDatafileTaskException;
import org.onap.dcaegen2.collectors.datafile.ftp.FileCollectClient;
import org.onap.dcaegen2.collectors.datafile.ftp.FtpsClient;
import org.onap.dcaegen2.collectors.datafile.ftp.SftpClient;
import org.onap.dcaegen2.collectors.datafile.ftp.SftpClientSettings;
import org.onap.dcaegen2.collectors.datafile.model.Counters;
import org.onap.dcaegen2.collectors.datafile.model.FileData;
import org.onap.dcaegen2.collectors.datafile.model.FilePublishInformation;
import org.onap.dcaegen2.collectors.datafile.model.ImmutableFilePublishInformation;
import org.onap.dcaegen2.collectors.datafile.model.MessageMetaData;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.MDC;
import reactor.core.publisher.Mono;
/**
* Collects a file from a PNF.
*
* @author <a href="mailto:henrik.b.andersson@est.tech">Henrik Andersson</a>
*/
public class FileCollector {
private static final Logger logger = LoggerFactory.getLogger(FileCollector.class);
private final AppConfig datafileAppConfig;
private final Counters counters;
/**
* Constructor.
*
* @param datafileAppConfig application configuration
*/
public FileCollector(AppConfig datafileAppConfig, Counters counters) {
this.datafileAppConfig = datafileAppConfig;
this.counters = counters;
}
/**
* Collects a file from the PNF and stores it in the local file system.
*
* @param fileData data about the file to collect.
* @param numRetries the number of retries if the publishing fails
* @param firstBackoff the time to delay the first retry
* @param contextMap context for logging.
* @return the data needed to publish the file.
*/
public Mono<FilePublishInformation> collectFile(FileData fileData, long numRetries, Duration firstBackoff,
Map<String, String> contextMap) {
MDC.setContextMap(contextMap);
logger.trace("Entering collectFile with {}", fileData);
return Mono.just(fileData) //
.cache() //
.flatMap(fd -> tryCollectFile(fileData, contextMap)) //
.retryBackoff(numRetries, firstBackoff) //
.flatMap(FileCollector::checkCollectedFile);
}
private static Mono<FilePublishInformation> checkCollectedFile(Optional<FilePublishInformation> info) {
if (info.isPresent()) {
return Mono.just(info.get());
} else {
// If there is no info, the file is not retrievable
return Mono.error(new DatafileTaskException("Non retryable file transfer failure"));
}
}
private Mono<Optional<FilePublishInformation>> tryCollectFile(FileData fileData, Map<String, String> context) {
MDC.setContextMap(context);
logger.trace("starting to collectFile {}", fileData.name());
final String remoteFile = fileData.remoteFilePath();
final Path localFile = fileData.getLocalFilePath();
try (FileCollectClient currentClient = createClient(fileData)) {
currentClient.open();
localFile.getParent().toFile().mkdir(); // Create parent directories
currentClient.collectFile(remoteFile, localFile);
counters.incNoOfCollectedFiles();
return Mono.just(Optional.of(getFilePublishInformation(fileData, localFile, context)));
} catch (NonRetryableDatafileTaskException nre) {
logger.warn("Failed to download file: {} {}, reason: {}", fileData.sourceName(), fileData.name(), nre);
counters.incNoOfFailedFtpAttempts();
return Mono.just(Optional.empty()); // Give up
} catch (DatafileTaskException e) {
logger.warn("Failed to download file: {} {}, reason: {}", fileData.sourceName(), fileData.name(),
e.toString());
counters.incNoOfFailedFtpAttempts();
return Mono.error(e);
} catch (Exception throwable) {
logger.warn("Failed to close ftp client: {} {}, reason: {}", fileData.sourceName(), fileData.name(),
throwable.toString(), throwable);
return Mono.just(Optional.of(getFilePublishInformation(fileData, localFile, context)));
}
}
private FileCollectClient createClient(FileData fileData) throws DatafileTaskException {
switch (fileData.scheme()) {
case SFTP:
return createSftpClient(fileData);
case FTPS:
return createFtpsClient(fileData);
default:
throw new DatafileTaskException("Unhandeled protocol: " + fileData.scheme());
}
}
private static FilePublishInformation getFilePublishInformation(FileData fileData, Path localFile,
Map<String, String> context) {
String location = fileData.location();
MessageMetaData metaData = fileData.messageMetaData();
return ImmutableFilePublishInformation.builder() //
.productName(metaData.productName()) //
.vendorName(metaData.vendorName()) //
.lastEpochMicrosec(metaData.lastEpochMicrosec()) //
.sourceName(metaData.sourceName()) //
.startEpochMicrosec(metaData.startEpochMicrosec()) //
.timeZoneOffset(metaData.timeZoneOffset()) //
.name(fileData.name()) //
.location(location) //
.internalLocation(localFile) //
.compression(fileData.compression()) //
.fileFormatType(fileData.fileFormatType()) //
.fileFormatVersion(fileData.fileFormatVersion()) //
.changeIdentifier(fileData.messageMetaData().changeIdentifier()) //
.context(context) //
.build();
}
protected SftpClient createSftpClient(FileData fileData) {
return new SftpClient(fileData.fileServerData(),
new SftpClientSettings(datafileAppConfig.getSftpConfiguration()));
}
protected FtpsClient createFtpsClient(FileData fileData) {
FtpesConfig config = datafileAppConfig.getFtpesConfiguration();
return new FtpsClient(fileData.fileServerData(), Paths.get(config.keyCert()), config.keyPasswordPath(),
Paths.get(config.trustedCa()), config.trustedCaPasswordPath());
}
}
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