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Utilities to create microservices without frameworks. Rest layer to create microservice server with jetty and servlets
/**
* Copyright (C) August 2019 Raúl Eduardo González Argote - [email protected]
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU LESSER GENERAL PUBLIC LICENSE as published by
* the Free Software Foundation, version 3, 29 June 2007
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* GNU LESSER GENERAL PUBLIC LICENSE
* Version 3, 29 June 2007
*
* Copyright (C) 2007 Free Software Foundation, Inc. T requestAsObject(final HttpServletRequest request, final Class clazz) {
if (request.getContentType() != null && MimeTypes.Type.APPLICATION_JSON.asString().contains(request.getContentType())
|| MimeTypes.Type.APPLICATION_JSON.asString().equals(request.getContentType().trim())) {
try {
final StringBuilder buffer = new StringBuilder();
final BufferedReader reader = request.getReader();
String line;
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
final String payload = buffer.toString();
return JsonUtils.aJson(payload, clazz);
} catch (final IOException ex) {
LOGGER.warning(ex.getMessage());
}
}
return null;
}
// public void responseAsJson(final HttpServletResponse response, final Object obj) {
//
// response.setContentType(MimeTypes.Type.APPLICATION_JSON_UTF_8.asString());
//
// final String res = JsonUtils.aJsonExcludeFieldsWithoutExposeAnnotation(obj);
//
// PrintWriter out = null;
// try {
// out = response.getWriter();
// out.print(res);
// out.flush();
//
// } catch (final IOException e) {
// LOGGER.warning(e.getMessage());
// } finally {
// if (out != null) {
// out.close();
// }
// }
//
// }
public void responseAsJson(final HttpServletResponse response, final BaseResponseDto baseResponse) {
response.setContentType(MimeTypes.Type.APPLICATION_JSON_UTF_8.asString());
try {
response.setStatus(Integer.valueOf(baseResponse.getCode()));
} catch (NumberFormatException | NullPointerException e) {
LOGGER.warning(e.getMessage());
}
PrintWriter out = null;
try {
out = response.getWriter();
out.print(baseResponse.aJson());
out.flush();
} catch (final IOException e) {
LOGGER.warning(e.getMessage());
} finally {
if (out != null) {
out.close();
}
}
}
public void responseAsJson(final HttpServletResponse response, final Object obj) {
response.setContentType(MimeTypes.Type.APPLICATION_JSON_UTF_8.asString());
try {
response.setStatus(200);
} catch (NumberFormatException | NullPointerException e) {
LOGGER.warning(e.getMessage());
}
PrintWriter out = null;
try {
out = response.getWriter();
out.print(JsonUtils.aJsonExcludeFieldsWithoutExposeAnnotation(obj));
out.flush();
} catch (final IOException e) {
LOGGER.warning(e.getMessage());
} finally {
if (out != null) {
out.close();
}
}
}
public boolean emptyPath(final HttpServletRequest request) {
final String pathInfo = request.getPathInfo();
LOGGER.fine("Path info: " + pathInfo);
return pathInfo == null || pathInfo.equals("/");
}
@Override
protected void doGet(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
super.doGet(request, response);
notImplemented(response);
}
@Override
protected void doHead(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
super.doHead(request, response);
notImplemented(response);
}
@Override
protected void doPost(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
super.doPost(request, response);
notImplemented(response);
}
@Override
protected void doPut(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
super.doPut(request, response);
notImplemented(response);
}
@Override
protected void doDelete(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
super.doDelete(request, response);
notImplemented(response);
}
@Override
protected void doOptions(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
super.doOptions(request, response);
notImplemented(response);
}
@Override
protected void doTrace(final HttpServletRequest request, final HttpServletResponse response) throws ServletException, IOException {
super.doTrace(request, response);
notImplemented(response);
}
private void notImplemented(final HttpServletResponse response) {
LOGGER.info(NOT_IMPLEMENTED);
responseAsJson(response, new BaseResponseDto.Builder().code(405).message(NOT_IMPLEMENTED).build());
}
}
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