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NIFI-4177 This closes #2002. MergeContent - Tar - Save modification timestamp like Tar does 

Signed-off-by: joewitt <joewitt@apache.org>
This commit is contained in:
Wayne Steel 2017-07-12 14:52:52 +01:00 committed by joewitt
parent 69f263c4d1
commit a6e8f0afe3
1 changed files with 24 additions and 0 deletions
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24
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/MergeContent.java
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@ -25,6 +25,7 @@ import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Instant;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
@ -53,6 +54,7 @@ import org.apache.avro.generic.GenericDatumWriter;
import org.apache.avro.generic.GenericRecord;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.lang3.StringUtils;
import org.apache.nifi.annotation.behavior.InputRequirement;
import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
import org.apache.nifi.annotation.behavior.ReadsAttribute;
@ -313,6 +315,16 @@ public class MergeContent extends BinFiles {
.allowableValues("true", "false")
.defaultValue("false")
.build();
public static final PropertyDescriptor TAR_MODIFIED_TIME = new PropertyDescriptor.Builder()
.name("Tar Modified Time")
.description("If using the Tar Merge Format, specifies if the Tar entry should store the modified timestamp either by expression "
+ "(e.g. ${file.lastModifiedTime} or static value, both of which must match the ISO8601 format 'yyyy-MM-dd'T'HH:mm:ssZ'; if using "
+ "other merge strategy or left blank, this value is ignored")
.required(false)
.expressionLanguageSupported(true)
.addValidator(StandardValidators.NON_EMPTY_VALIDATOR)
.defaultValue("${file.lastModifiedTime}")
.build();
public static final Relationship REL_MERGED = new Relationship.Builder().name("merged").description("The FlowFile containing the merged content").build();
@ -347,6 +359,7 @@ public class MergeContent extends BinFiles {
descriptors.add(DEMARCATOR);
descriptors.add(COMPRESSION_LEVEL);
descriptors.add(KEEP_PATH);
descriptors.add(TAR_MODIFIED_TIME);
return descriptors;
}
@ -729,6 +742,17 @@ public class MergeContent extends BinFiles {
}
}
final String modTime = context.getProperty(TAR_MODIFIED_TIME)
.evaluateAttributeExpressions(flowFile).getValue();
if (StringUtils.isNotBlank(modTime)) {
try {
tarEntry.setModTime(Instant.parse(modTime).toEpochMilli());
} catch (final Exception e) {
getLogger().debug("Attribute {} of {} is set to {}; expected ISO8601 format, so ignoring",
new Object[]{TAR_MODIFIED_TIME, flowFile, modTime});
}
}
out.putArchiveEntry(tarEntry);
bin.getSession().exportTo(flowFile, out);