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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.config.server.http;
import com.yahoo.config.application.api.ApplicationFile;
import com.yahoo.container.jdisc.HttpResponse;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.UncheckedIOException;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Pattern;
import static com.yahoo.jdisc.http.HttpResponse.Status.OK;
/**
* Represents a response for a request to read contents of a file.
*
* @author Ulf Lilleengen
*/
public class SessionContentReadResponse extends HttpResponse {
private static final Map<String, String> contentTypeByExtension = loadContentTypeByExtension();
private final ApplicationFile file;
public SessionContentReadResponse(ApplicationFile file) {
super(OK);
this.file = file;
}
@Override
public void render(OutputStream outputStream) throws IOException {
try (InputStream inputStream = file.createInputStream()) {
inputStream.transferTo(outputStream);
}
}
@Override
public String getContentType() {
String filename = file.getPath().getName();
int lastDotIndex = filename.lastIndexOf('.');
if (lastDotIndex >= 0) {
String contentType = contentTypeByExtension.get(filename.substring(lastDotIndex + 1));
if (contentType != null) return contentType;
}
return DEFAULT_MIME_TYPE;
}
private static Map<String, String> loadContentTypeByExtension() {
ClassLoader classLoader = SessionContentReadResponse.class.getClassLoader();
Pattern whitespace = Pattern.compile("\\s");
Map<String, String> map = new HashMap<>();
try (BufferedReader reader = new BufferedReader(new InputStreamReader(classLoader.getResourceAsStream("mime.types")))) {
while (reader.ready()) {
String line = reader.readLine();
if (line.isEmpty() || line.charAt(0) == '#') continue;
String[] parts = whitespace.split(line);
for (int i = 1; i < parts.length; i++)
map.putIfAbsent(parts[i], parts[0]);
}
return map;
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}
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