private void handleError(PromiseError error) {
view.showLoader(false);
final ServiceError serviceError =
dtoFactory.createDtoFromJson(error.getMessage(), ServiceError.class);
notificationManager.notify(serviceError.getMessage(), FAIL, true);
view.showError(serviceError.getMessage());
}
public String requestString(
int timeout, String url, String method, Object body, Pair<String, ?>... parameters)
throws IOException, ServerException, ForbiddenException, NotFoundException,
UnauthorizedException, ConflictException {
final String authToken = getAuthenticationToken();
if ((parameters != null && parameters.length > 0) || authToken != null) {
final UriBuilder ub = UriBuilder.fromUri(url);
// remove sensitive information from url.
ub.replaceQueryParam("token", null);
if (parameters != null && parameters.length > 0) {
for (Pair<String, ?> parameter : parameters) {
String name = URLEncoder.encode(parameter.first, "UTF-8");
String value =
parameter.second == null
? null
: URLEncoder.encode(String.valueOf(parameter.second), "UTF-8");
ub.replaceQueryParam(name, value);
}
}
url = ub.build().toString();
}
final HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();
conn.setConnectTimeout(timeout > 0 ? timeout : 60000);
conn.setReadTimeout(timeout > 0 ? timeout : 60000);
try {
conn.setRequestMethod(method);
// drop a hint for server side that we want to receive application/json
conn.addRequestProperty(HttpHeaders.ACCEPT, MediaType.APPLICATION_JSON);
if (authToken != null) {
conn.setRequestProperty(HttpHeaders.AUTHORIZATION, authToken);
}
if (body != null) {
conn.addRequestProperty(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON);
conn.setDoOutput(true);
if (HttpMethod.DELETE.equals(
method)) { // to avoid jdk bug described here
// http://bugs.java.com/view_bug.do?bug_id=7157360
conn.setRequestMethod(HttpMethod.POST);
conn.setRequestProperty("X-HTTP-Method-Override", HttpMethod.DELETE);
}
try (OutputStream output = conn.getOutputStream()) {
output.write(DtoFactory.getInstance().toJson(body).getBytes());
}
}
final int responseCode = conn.getResponseCode();
if ((responseCode / 100) != 2) {
InputStream in = conn.getErrorStream();
if (in == null) {
in = conn.getInputStream();
}
final String str;
try (Reader reader = new InputStreamReader(in)) {
str = CharStreams.toString(reader);
}
final String contentType = conn.getContentType();
if (contentType != null && contentType.startsWith(MediaType.APPLICATION_JSON)) {
final ServiceError serviceError =
DtoFactory.getInstance().createDtoFromJson(str, ServiceError.class);
if (serviceError.getMessage() != null) {
if (responseCode == Response.Status.FORBIDDEN.getStatusCode()) {
throw new ForbiddenException(serviceError);
} else if (responseCode == Response.Status.NOT_FOUND.getStatusCode()) {
throw new NotFoundException(serviceError);
} else if (responseCode == Response.Status.UNAUTHORIZED.getStatusCode()) {
throw new UnauthorizedException(serviceError);
} else if (responseCode == Response.Status.CONFLICT.getStatusCode()) {
throw new ConflictException(serviceError);
} else if (responseCode == Response.Status.INTERNAL_SERVER_ERROR.getStatusCode()) {
throw new ServerException(serviceError);
}
throw new ServerException(serviceError);
}
}
// Can't parse content as json or content has format other we expect for error.
throw new IOException(
String.format(
"Failed access: %s, method: %s, response code: %d, message: %s",
UriBuilder.fromUri(url).replaceQuery("token").build(),
method,
responseCode,
str));
}
final String contentType = conn.getContentType();
if (!(contentType == null || contentType.startsWith(MediaType.APPLICATION_JSON))) {
throw new IOException(conn.getResponseMessage());
}
try (Reader reader = new InputStreamReader(conn.getInputStream())) {
return CharStreams.toString(reader);
}
} finally {
conn.disconnect();
}
}