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.




----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

For queries about this service, please contact Infrastructure at:
us...@infra.apache.org


Reply via email to