/*
* Copyright 2016-2017 the original author or authors.
*
* 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.
*/
package org.springframework.integration.sftp.dsl;
import java.util.Comparator;
import org.springframework.integration.file.dsl.RemoteFileStreamingInboundChannelAdapterSpec;
import org.springframework.integration.file.filters.CompositeFileListFilter;
import org.springframework.integration.file.filters.FileListFilter;
import org.springframework.integration.file.remote.AbstractFileInfo;
import org.springframework.integration.file.remote.RemoteFileTemplate;
import org.springframework.integration.metadata.SimpleMetadataStore;
import org.springframework.integration.sftp.filters.SftpPersistentAcceptOnceFileListFilter;
import org.springframework.integration.sftp.filters.SftpRegexPatternFileListFilter;
import org.springframework.integration.sftp.filters.SftpSimplePatternFileListFilter;
import org.springframework.integration.sftp.inbound.SftpStreamingMessageSource;
import com.jcraft.jsch.ChannelSftp.LsEntry;
/**
* @author Gary Russell
* @since 5.0
*
*/
public class SftpStreamingInboundChannelAdapterSpec
extends RemoteFileStreamingInboundChannelAdapterSpec<LsEntry, SftpStreamingInboundChannelAdapterSpec,
SftpStreamingMessageSource> {
SftpStreamingInboundChannelAdapterSpec(RemoteFileTemplate<LsEntry> remoteFileTemplate,
Comparator<AbstractFileInfo<LsEntry>> comparator) {
this.target = new SftpStreamingMessageSource(remoteFileTemplate, comparator);
}
/**
* Specify a simple pattern to match remote files (e.g. '*.txt').
* @param pattern the pattern.
* @see SftpSimplePatternFileListFilter
* @see #filter(org.springframework.integration.file.filters.FileListFilter)
*/
@Override
public SftpStreamingInboundChannelAdapterSpec patternFilter(String pattern) {
return filter(composeFilters(new SftpSimplePatternFileListFilter(pattern)));
}
/**
* Specify a regular expression to match remote files (e.g. '[0-9].*.txt').
* @param regex the expression.
* @see SftpRegexPatternFileListFilter
* @see #filter(org.springframework.integration.file.filters.FileListFilter)
*/
@Override
public SftpStreamingInboundChannelAdapterSpec regexFilter(String regex) {
return filter(composeFilters(new SftpRegexPatternFileListFilter(regex)));
}
@SuppressWarnings("unchecked")
private CompositeFileListFilter<LsEntry> composeFilters(FileListFilter<LsEntry> fileListFilter) {
CompositeFileListFilter<LsEntry> compositeFileListFilter = new CompositeFileListFilter<>();
compositeFileListFilter.addFilters(fileListFilter,
new SftpPersistentAcceptOnceFileListFilter(new SimpleMetadataStore(), "sftpStreamingMessageSource"));
return compositeFileListFilter;
}
}