package io.lumify.web.routes.vertex;
import io.lumify.core.exception.LumifyException;
import io.lumify.miniweb.HandlerChain;
import io.lumify.miniweb.utils.UrlUtils;
import com.google.inject.Inject;
import io.lumify.core.config.Configuration;
import io.lumify.core.model.properties.LumifyProperties;
import io.lumify.core.model.properties.MediaLumifyProperties;
import io.lumify.core.model.user.UserRepository;
import io.lumify.core.model.workspace.WorkspaceRepository;
import io.lumify.core.user.User;
import io.lumify.core.util.LumifyLogger;
import io.lumify.core.util.LumifyLoggerFactory;
import io.lumify.web.BaseRequestHandler;
import org.apache.commons.io.IOUtils;
import org.securegraph.Authorizations;
import org.securegraph.Graph;
import org.securegraph.Vertex;
import org.securegraph.property.StreamingPropertyValue;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static com.google.common.base.Preconditions.checkNotNull;
public class VertexRaw extends BaseRequestHandler {
private static final LumifyLogger LOGGER = LumifyLoggerFactory.getLogger(VertexRaw.class);
private static final Pattern RANGE_PATTERN = Pattern.compile("bytes=([0-9]*)-([0-9]*)");
private final Graph graph;
@Inject
public VertexRaw(
final Graph graph,
final UserRepository userRepository,
final WorkspaceRepository workspaceRepository,
final Configuration configuration) {
super(userRepository, workspaceRepository, configuration);
this.graph = graph;
}
@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());
respondWithNotFound(response);
return;
}
InputStream in = rawValue.getInputStream();
try {
IOUtils.copy(in, response.getOutputStream());
} finally {
in.close();
}
}
chain.next(request, response);
}
private void handlePartialPlayback(HttpServletRequest request, HttpServletResponse response, Vertex artifactVertex, String fileName, User user) throws IOException {
String type = getRequiredParameter(request, "type");
InputStream in;
Long totalLength;
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();
}
private StreamingPropertyValue getStreamingPropertyValue(Vertex artifactVertex, String type) {
StreamingPropertyValue mediaPropertyValue;
if (MediaLumifyProperties.MIME_TYPE_AUDIO_MP4.equals(type)) {
mediaPropertyValue = MediaLumifyProperties.AUDIO_MP4.getPropertyValue(artifactVertex);
checkNotNull(mediaPropertyValue, String.format("Could not find %s property on artifact %s", MediaLumifyProperties.MIME_TYPE_AUDIO_MP4, artifactVertex.getId()));
} else if (MediaLumifyProperties.MIME_TYPE_AUDIO_OGG.equals(type)) {
mediaPropertyValue = MediaLumifyProperties.AUDIO_OGG.getPropertyValue(artifactVertex);
checkNotNull(mediaPropertyValue, String.format("Could not find %s property on artifact %s", MediaLumifyProperties.MIME_TYPE_AUDIO_OGG, artifactVertex.getId()));
} else if (MediaLumifyProperties.MIME_TYPE_VIDEO_MP4.equals(type)) {
mediaPropertyValue = MediaLumifyProperties.VIDEO_MP4.getPropertyValue(artifactVertex);
checkNotNull(mediaPropertyValue, String.format("Could not find %s property on artifact %s", MediaLumifyProperties.MIME_TYPE_VIDEO_MP4, artifactVertex.getId()));
} else if (MediaLumifyProperties.MIME_TYPE_VIDEO_WEBM.equals(type)) {
mediaPropertyValue = MediaLumifyProperties.VIDEO_WEBM.getPropertyValue(artifactVertex);
checkNotNull(mediaPropertyValue, String.format("Could not find %s property on artifact %s", MediaLumifyProperties.MIME_TYPE_VIDEO_WEBM, artifactVertex.getId()));
} else {
throw new LumifyException("Invalid video type: " + type);
}
return mediaPropertyValue;
}
private void copy(InputStream in, OutputStream out, Long length) throws IOException {
byte[] buffer = new byte[1024];
int read = 0;
while (length > 0 && (read = in.read(buffer, 0, (int) Math.min(length, buffer.length))) > 0) {
out.write(buffer, 0, read);
length -= read;
}
}
private String getMimeType(Vertex artifactVertex) {
String mimeType = LumifyProperties.MIME_TYPE.getPropertyValue(artifactVertex);
if (mimeType == null || mimeType.isEmpty()) {
mimeType = "application/octet-stream";
}
return mimeType;
}
}