Java Code Examples for org.sonatype.nexus.blobstore.api.Blob#getInputStream()

/**
 * Extracts the contents for the first matching {@code composer.json} file (of which there should only be one) as a
 * map representing the parsed JSON content. If no such file is found then an empty map is returned.
 */
public Map<String, Object> extractFromZip(final Blob blob) throws IOException {
  try (InputStream is = blob.getInputStream()) {
    try (ArchiveInputStream ais = archiveStreamFactory.createArchiveInputStream(ArchiveStreamFactory.ZIP, is)) {
      ArchiveEntry entry = ais.getNextEntry();
      while (entry != null) {
        Map<String, Object> contents = processEntry(ais, entry);
        if (!contents.isEmpty()) {
          return contents;
        }
        entry = ais.getNextEntry();
      }
    }
    return Collections.emptyMap();
  }
  catch (ArchiveException e) {
    throw new IOException("Error reading from archive", e);
  }
}
 

private static InputStream packageRootAssetToInputStream(final Repository repository, final Asset packageRootAsset) {
  BlobStore blobStore = repository.facet(StorageFacet.class).blobStore();
  if (isNull(blobStore)) {
    throw new MissingAssetBlobException(packageRootAsset);
  }

  BlobRef blobRef = packageRootAsset.requireBlobRef();
  Blob blob = blobStore.get(blobRef.getBlobId());
  if (isNull(blob)) {
    throw new MissingAssetBlobException(packageRootAsset);
  }

  try {
    return blob.getInputStream();
  }
  catch (BlobStoreException ignore) { // NOSONAR
    // we want any issue with the blob store stream to be caught during the getting of the input stream as throw the
    // the same type of exception as a missing asset blob, so that we can pass the associated asset around.
    throw new MissingAssetBlobException(packageRootAsset);
  }
}
 

@Test
public void hardDeletePreventsGetDespiteOpenStreams() throws Exception {
  final byte[] content = new byte[TEST_DATA_LENGTH];
  new Random().nextBytes(content);

  final Blob blob = underTest.create(new ByteArrayInputStream(content), TEST_HEADERS);

  final InputStream inputStream = blob.getInputStream();

  // Read half the data
  inputStream.read(new byte[content.length / 2]);

  // force delete
  underTest.deleteHard(blob.getId());

  final Blob newBlob = underTest.get(blob.getId());
  assertThat(newBlob, is(nullValue()));
}
 

/**
 * Verify that the Blob exists and is in agreement with the stored Asset metadata.;
 */
private void verifyBlob(final Blob blob, final Asset asset) throws MismatchedSHA1Exception, BlobUnavilableException, IOException {
  BlobMetrics metrics = blob.getMetrics();

  String assetChecksum =
      asset.blob().map(AssetBlob::checksums).map(checksums -> checksums.get(HashAlgorithm.SHA1.name())).orElse(null);
  if (!metrics.getSha1Hash().equals(assetChecksum)) {
    throw new MismatchedSHA1Exception();
  }

  try (InputStream blobstream = blob.getInputStream()) {
    if (metrics.getContentSize() > 0 && blobstream.available() == 0) {
      throw new BlobUnavilableException();
    }
  }
}
 

@Override
public Query getComponentQuery(final Blob blob) throws IOException {
  final InputStream inputStream = blob.getInputStream();
  final PackageInfo packageInfo = new PackageInfo(AptPackageParser.parsePackage(() -> inputStream));
  return Query.builder()
      .where(P_NAME).eq(packageInfo.getPackageName())
      .and(P_VERSION).eq(packageInfo.getVersion())
      .and(P_GROUP).eq(packageInfo.getArchitecture())
      .build();
}
 

private byte[] extractContent(final Blob blob) throws IOException {
  try (InputStream inputStream = blob.getInputStream()) {
    return ByteStreams.toByteArray(inputStream);
  }
}