private void handlePartialPlayback(
HttpServletRequest request,
HttpServletResponse response,
Vertex artifactVertex,
String fileName,
User user)
throws IOException {
String type = getRequiredParameter(request, "type");
InputStream in;
Long totalLength = null;
long partialStart = 0;
Long partialEnd = null;
String range = request.getHeader("Range");
if (range != null) {
response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);
Matcher m = RANGE_PATTERN.matcher(range);
if (m.matches()) {
partialStart = Long.parseLong(m.group(1));
if (m.group(2).length() > 0) {
partialEnd = Long.parseLong(m.group(2));
}
}
}
response.setCharacterEncoding(null);
response.setContentType(type);
response.addHeader("Content-Disposition", "attachment; filename=" + fileName);
StreamingPropertyValue mediaPropertyValue = getStreamingPropertyValue(artifactVertex, type);
totalLength = mediaPropertyValue.getLength();
in = mediaPropertyValue.getInputStream();
if (partialEnd == null) {
partialEnd = totalLength;
}
// Ensure that the last byte position is less than the instance-length
partialEnd = Math.min(partialEnd, totalLength - 1);
long partialLength = totalLength;
if (range != null) {
partialLength = partialEnd - partialStart + 1;
response.addHeader(
"Content-Range", "bytes " + partialStart + "-" + partialEnd + "/" + totalLength);
if (partialStart > 0) {
in.skip(partialStart);
}
}
response.addHeader("Content-Length", "" + partialLength);
OutputStream out = response.getOutputStream();
copy(in, out, partialLength);
response.flushBuffer();
}
@Override
public void handle(HttpServletRequest request, HttpServletResponse response, HandlerChain chain)
throws Exception {
boolean download = getOptionalParameter(request, "download") != null;
boolean playback = getOptionalParameter(request, "playback") != null;
User user = getUser(request);
Authorizations authorizations = getAuthorizations(request, user);
String graphVertexId = UrlUtils.urlDecode(getAttributeString(request, "graphVertexId"));
Vertex artifactVertex = graph.getVertex(graphVertexId, authorizations);
if (artifactVertex == null) {
respondWithNotFound(response);
return;
}
String fileName = LumifyProperties.FILE_NAME.getPropertyValue(artifactVertex);
if (fileName == null) {
fileName = LumifyProperties.TITLE.getPropertyValue(artifactVertex);
}
if (playback) {
handlePartialPlayback(request, response, artifactVertex, fileName, user);
} else {
String mimeType = getMimeType(artifactVertex);
response.setContentType(mimeType);
setMaxAge(response, EXPIRES_1_HOUR);
if (download) {
response.addHeader("Content-Disposition", "attachment; filename=" + fileName);
} else {
response.addHeader("Content-Disposition", "inline; filename=" + fileName);
}
StreamingPropertyValue rawValue = LumifyProperties.RAW.getPropertyValue(artifactVertex);
if (rawValue == null) {
LOGGER.warn("Could not find raw on artifact: %s", artifactVertex.getId().toString());
respondWithNotFound(response);
return;
}
InputStream in = rawValue.getInputStream();
try {
IOUtils.copy(in, response.getOutputStream());
} finally {
in.close();
}
}
chain.next(request, response);
}
private void setIconProperty(
Concept concept,
File inDir,
String glyphIconFileName,
String propertyKey,
Authorizations authorizations)
throws IOException {
if (glyphIconFileName != null) {
File iconFile = new File(inDir, glyphIconFileName);
if (!iconFile.exists()) {
throw new RuntimeException("Could not find icon file: " + iconFile.toString());
}
InputStream iconFileIn = new FileInputStream(iconFile);
try {
StreamingPropertyValue value = new StreamingPropertyValue(iconFileIn, byte[].class);
value.searchIndex(false);
value.store(true);
concept.setProperty(
propertyKey, value, OntologyRepository.VISIBILITY.getVisibility(), authorizations);
} finally {
iconFileIn.close();
}
}
}