/**
* Merge the newly processed data with an (possible) existing data already present, also convert
* the completed JSON merge into a Stream for storage.
*
* @param dataJson an instantiated JSON object containing data to store
* @param metaJson an instantiated JSON object containing metadata to store
* @param existing an instantiated JsonSimple object with any existing data
* @throws IOException if any character encoding issues effect the Stream
*/
private InputStream streamMergedJson(
JsonObject dataJson, JsonObject metaJson, JsonSimple existing) throws IOException {
// Overwrite and/or create only nodes we consider new data
existing.getJsonObject().put("recordIDPrefix", idPrefix);
JsonObject existingData = existing.writeObject("data");
existingData.putAll(dataJson);
JsonObject existingMeta = existing.writeObject("metadata");
existingMeta.putAll(metaJson);
// Turn into a stream to return
String jsonString = existing.toString(true);
return IOUtils.toInputStream(jsonString, "UTF-8");
}
/**
* Main render method to send the file to ICE service
*
* @param sourceFile : File to be rendered
* @return file returned by ICE service
* @throws TransformerException
*/
private File render(File sourceFile) throws TransformerException {
log.info("Converting {}...", sourceFile);
String filename = sourceFile.getName();
String basename = FilenameUtils.getBaseName(filename);
String ext = FilenameUtils.getExtension(filename);
int status = HttpStatus.SC_OK;
// Grab our config
JsonObject object = itemConfig.getObject("resize");
Map<String, JsonSimple> resizeConfig = JsonSimple.toJavaMap(object);
if (resizeConfig == null || resizeConfig.isEmpty()) {
// Try system config instead
object = config.getObject("resize");
resizeConfig = JsonSimple.toJavaMap(object);
if (resizeConfig == null || resizeConfig.isEmpty()) {
throw new TransformerException("No resizing configuration found.");
}
}
String resizeJson = "";
for (String key : resizeConfig.keySet()) {
JsonSimple j = resizeConfig.get(key);
resizeJson += "\"" + key + "\":" + j.toString() + ",";
}
PostMethod post = new PostMethod(convertUrl);
try {
Part[] parts = {
new StringPart("zip", "on"),
new StringPart("dc", "on"),
new StringPart("toc", "on"),
new StringPart("pdflink", "on"),
new StringPart("addThumbnail", "on"),
new StringPart("pathext", ext),
new StringPart("template", getTemplate()),
new StringPart(
"multipleImageOptions", "{" + StringUtils.substringBeforeLast(resizeJson, ",") + "}"),
new StringPart("mode", "download"),
new FilePart("file", sourceFile)
};
post.setRequestEntity(new MultipartRequestEntity(parts, post.getParams()));
BasicHttpClient client = new BasicHttpClient(convertUrl);
log.debug("Using conversion URL: {}", convertUrl);
status = client.executeMethod(post);
log.debug("HTTP status: {} {}", status, HttpStatus.getStatusText(status));
} catch (IOException ioe) {
throw new TransformerException("Failed to send ICE conversion request", ioe);
}
try {
if (status != HttpStatus.SC_OK) {
String xmlError = post.getResponseBodyAsString();
log.debug("Error: {}", xmlError);
throw new TransformerException(xmlError);
}
String type = post.getResponseHeader("Content-Type").getValue();
if ("application/zip".equals(type)) {
filename = basename + ".zip";
} else if (type.startsWith("image/")) {
filename = basename + "_thumbnail.jpg";
} else if ("video/x-flv".equals(type)) {
filename = basename + ".flv";
} else if ("audio/mpeg".equals(type)) {
filename = basename + ".mp3";
}
File outputFile = new File(outputDir, filename);
if (outputFile.exists()) {
outputFile.delete();
}
InputStream in = post.getResponseBodyAsStream();
FileOutputStream out = new FileOutputStream(outputFile);
IOUtils.copy(in, out);
in.close();
out.close();
log.debug("ICE output file: {}", outputFile);
return outputFile;
} catch (IOException ioe) {
throw new TransformerException("Failed to process ICE output", ioe);
}
}