MikeThomsen commented on a change in pull request #4336:
URL: https://github.com/apache/nifi/pull/4336#discussion_r444852394
##########
File path:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/UnpackContent.java
##########
@@ -394,6 +412,65 @@ public void process(final OutputStream out) throws
IOException {
}
}
+ private static class SevenZipUnpacker extends Unpacker {
+ public SevenZipUnpacker(Pattern fileFilter) {
+ super(fileFilter);
+ }
+
+ @Override
+ public void unpack(final ProcessSession session, final FlowFile
source, final List<FlowFile> unpacked) {
+ final String fragmentId = UUID.randomUUID().toString();
+ session.read(source, new InputStreamCallback() {
+ @Override
+ public void process(final InputStream in) throws IOException {
+
+ int fragmentCount = 0;
+ byte[] inputData = IOUtils.toByteArray(in);
+
+ SeekableInMemoryByteChannel inMemoryByteChannel = new
SeekableInMemoryByteChannel(inputData);
+ SevenZFile sevenZFile = new
SevenZFile(inMemoryByteChannel);
+ SevenZArchiveEntry sevenZArchiveEntry;
+
+ while ((sevenZArchiveEntry = sevenZFile.getNextEntry()) !=
null) {
+ if (sevenZArchiveEntry.isDirectory() ||
!fileMatches(sevenZArchiveEntry)) {
+ continue;
+ }
+
+ final File file = new
File(sevenZArchiveEntry.getName());
+ final String parentDirectory = (file.getParent() ==
null) ? "/" : file.getParent();
+ final Path absPath = file.toPath().toAbsolutePath();
+ final String absPathString =
absPath.getParent().toString() + "/";
+
+ FlowFile unpackedFile = session.create(source);
+ try {
+ final Map<String, String> attributes = new
HashMap<>();
+ attributes.put(CoreAttributes.FILENAME.key(),
file.getName());
+ attributes.put(CoreAttributes.PATH.key(),
parentDirectory);
+ attributes.put(CoreAttributes.ABSOLUTE_PATH.key(),
absPathString);
+ attributes.put(CoreAttributes.MIME_TYPE.key(),
OCTET_STREAM);
+
+ attributes.put(FRAGMENT_ID, fragmentId);
+ attributes.put(FRAGMENT_INDEX,
String.valueOf(++fragmentCount));
+
+ unpackedFile =
session.putAllAttributes(unpackedFile, attributes);
+ byte[] content = new
byte[(int)sevenZArchiveEntry.getSize()];
Review comment:
Hard-coding it between 32kb and 1MB should be fine.
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