Examples with PreconditionFailedException com.google.gerrit.extensions.restapi.PreconditionFailedException used on opensource projects

Example 1 with PreconditionFailedException

use of com.google.gerrit.extensions.restapi.PreconditionFailedException in project gerrit by GerritCodeReview.

the class RestApiServlet method service.

@Override
protected final void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    final long startNanos = System.nanoTime();
    long auditStartTs = TimeUtil.nowMs();
    res.setHeader("Content-Disposition", "attachment");
    res.setHeader("X-Content-Type-Options", "nosniff");
    int status = SC_OK;
    long responseBytes = -1;
    Object result = null;
    ListMultimap<String, String> params = MultimapBuilder.hashKeys().arrayListValues().build();
    ListMultimap<String, String> config = MultimapBuilder.hashKeys().arrayListValues().build();
    Object inputRequestBody = null;
    RestResource rsrc = TopLevelResource.INSTANCE;
    ViewData viewData = null;
    try {
        if (isCorsPreflight(req)) {
            doCorsPreflight(req, res);
            return;
        }
        checkCors(req, res);
        checkUserSession(req);
        ParameterParser.splitQueryString(req.getQueryString(), config, params);
        List<IdString> path = splitPath(req);
        RestCollection<RestResource, RestResource> rc = members.get();
        globals.permissionBackend.user(globals.currentUser).checkAny(GlobalPermission.fromAnnotation(rc.getClass()));
        viewData = new ViewData(null, null);
        if (path.isEmpty()) {
            if (rc instanceof NeedsParams) {
                ((NeedsParams) rc).setParams(params);
            }
            if (isRead(req)) {
                viewData = new ViewData(null, rc.list());
            } else if (rc instanceof AcceptsPost && "POST".equals(req.getMethod())) {
                @SuppressWarnings("unchecked") AcceptsPost<RestResource> ac = (AcceptsPost<RestResource>) rc;
                viewData = new ViewData(null, ac.post(rsrc));
            } else {
                throw new MethodNotAllowedException();
            }
        } else {
            IdString id = path.remove(0);
            try {
                rsrc = rc.parse(rsrc, id);
                if (path.isEmpty()) {
                    checkPreconditions(req);
                }
            } catch (ResourceNotFoundException e) {
                if (rc instanceof AcceptsCreate && path.isEmpty() && ("POST".equals(req.getMethod()) || "PUT".equals(req.getMethod()))) {
                    @SuppressWarnings("unchecked") AcceptsCreate<RestResource> ac = (AcceptsCreate<RestResource>) rc;
                    viewData = new ViewData(null, ac.create(rsrc, id));
                    status = SC_CREATED;
                } else {
                    throw e;
                }
            }
            if (viewData.view == null) {
                viewData = view(rsrc, rc, req.getMethod(), path);
            }
        }
        checkRequiresCapability(viewData);
        while (viewData.view instanceof RestCollection<?, ?>) {
            @SuppressWarnings("unchecked") RestCollection<RestResource, RestResource> c = (RestCollection<RestResource, RestResource>) viewData.view;
            if (path.isEmpty()) {
                if (isRead(req)) {
                    viewData = new ViewData(null, c.list());
                } else if (c instanceof AcceptsPost && "POST".equals(req.getMethod())) {
                    @SuppressWarnings("unchecked") AcceptsPost<RestResource> ac = (AcceptsPost<RestResource>) c;
                    viewData = new ViewData(null, ac.post(rsrc));
                } else if (c instanceof AcceptsDelete && "DELETE".equals(req.getMethod())) {
                    @SuppressWarnings("unchecked") AcceptsDelete<RestResource> ac = (AcceptsDelete<RestResource>) c;
                    viewData = new ViewData(null, ac.delete(rsrc, null));
                } else {
                    throw new MethodNotAllowedException();
                }
                break;
            }
            IdString id = path.remove(0);
            try {
                rsrc = c.parse(rsrc, id);
                checkPreconditions(req);
                viewData = new ViewData(null, null);
            } catch (ResourceNotFoundException e) {
                if (c instanceof AcceptsCreate && path.isEmpty() && ("POST".equals(req.getMethod()) || "PUT".equals(req.getMethod()))) {
                    @SuppressWarnings("unchecked") AcceptsCreate<RestResource> ac = (AcceptsCreate<RestResource>) c;
                    viewData = new ViewData(viewData.pluginName, ac.create(rsrc, id));
                    status = SC_CREATED;
                } else if (c instanceof AcceptsDelete && path.isEmpty() && "DELETE".equals(req.getMethod())) {
                    @SuppressWarnings("unchecked") AcceptsDelete<RestResource> ac = (AcceptsDelete<RestResource>) c;
                    viewData = new ViewData(viewData.pluginName, ac.delete(rsrc, id));
                    status = SC_NO_CONTENT;
                } else {
                    throw e;
                }
            }
            if (viewData.view == null) {
                viewData = view(rsrc, c, req.getMethod(), path);
            }
            checkRequiresCapability(viewData);
        }
        if (notModified(req, rsrc, viewData.view)) {
            res.sendError(SC_NOT_MODIFIED);
            return;
        }
        if (!globals.paramParser.get().parse(viewData.view, params, req, res)) {
            return;
        }
        if (viewData.view instanceof RestReadView<?> && isRead(req)) {
            result = ((RestReadView<RestResource>) viewData.view).apply(rsrc);
        } else if (viewData.view instanceof RestModifyView<?, ?>) {
            @SuppressWarnings("unchecked") RestModifyView<RestResource, Object> m = (RestModifyView<RestResource, Object>) viewData.view;
            Type type = inputType(m);
            inputRequestBody = parseRequest(req, type);
            result = m.apply(rsrc, inputRequestBody);
            consumeRawInputRequestBody(req, type);
        } else {
            throw new ResourceNotFoundException();
        }
        if (result instanceof Response) {
            @SuppressWarnings("rawtypes") Response<?> r = (Response) result;
            status = r.statusCode();
            configureCaching(req, res, rsrc, viewData.view, r.caching());
        } else if (result instanceof Response.Redirect) {
            CacheHeaders.setNotCacheable(res);
            res.sendRedirect(((Response.Redirect) result).location());
            return;
        } else if (result instanceof Response.Accepted) {
            CacheHeaders.setNotCacheable(res);
            res.setStatus(SC_ACCEPTED);
            res.setHeader(HttpHeaders.LOCATION, ((Response.Accepted) result).location());
            return;
        } else {
            CacheHeaders.setNotCacheable(res);
        }
        res.setStatus(status);
        if (result != Response.none()) {
            result = Response.unwrap(result);
            if (result instanceof BinaryResult) {
                responseBytes = replyBinaryResult(req, res, (BinaryResult) result);
            } else {
                responseBytes = replyJson(req, res, config, result);
            }
        }
    } catch (MalformedJsonException e) {
        responseBytes = replyError(req, res, status = SC_BAD_REQUEST, "Invalid " + JSON_TYPE + " in request", e);
    } catch (JsonParseException e) {
        responseBytes = replyError(req, res, status = SC_BAD_REQUEST, "Invalid " + JSON_TYPE + " in request", e);
    } catch (BadRequestException e) {
        responseBytes = replyError(req, res, status = SC_BAD_REQUEST, messageOr(e, "Bad Request"), e.caching(), e);
    } catch (AuthException e) {
        responseBytes = replyError(req, res, status = SC_FORBIDDEN, messageOr(e, "Forbidden"), e.caching(), e);
    } catch (AmbiguousViewException e) {
        responseBytes = replyError(req, res, status = SC_NOT_FOUND, messageOr(e, "Ambiguous"), e);
    } catch (ResourceNotFoundException e) {
        responseBytes = replyError(req, res, status = SC_NOT_FOUND, messageOr(e, "Not Found"), e.caching(), e);
    } catch (MethodNotAllowedException e) {
        responseBytes = replyError(req, res, status = SC_METHOD_NOT_ALLOWED, messageOr(e, "Method Not Allowed"), e.caching(), e);
    } catch (ResourceConflictException e) {
        responseBytes = replyError(req, res, status = SC_CONFLICT, messageOr(e, "Conflict"), e.caching(), e);
    } catch (PreconditionFailedException e) {
        responseBytes = replyError(req, res, status = SC_PRECONDITION_FAILED, messageOr(e, "Precondition Failed"), e.caching(), e);
    } catch (UnprocessableEntityException e) {
        responseBytes = replyError(req, res, status = SC_UNPROCESSABLE_ENTITY, messageOr(e, "Unprocessable Entity"), e.caching(), e);
    } catch (NotImplementedException e) {
        responseBytes = replyError(req, res, status = SC_NOT_IMPLEMENTED, messageOr(e, "Not Implemented"), e);
    } catch (Exception e) {
        status = SC_INTERNAL_SERVER_ERROR;
        responseBytes = handleException(e, req, res);
    } finally {
        String metric = viewData != null && viewData.view != null ? globals.metrics.view(viewData) : "_unknown";
        globals.metrics.count.increment(metric);
        if (status >= SC_BAD_REQUEST) {
            globals.metrics.errorCount.increment(metric, status);
        }
        if (responseBytes != -1) {
            globals.metrics.responseBytes.record(metric, responseBytes);
        }
        globals.metrics.serverLatency.record(metric, System.nanoTime() - startNanos, TimeUnit.NANOSECONDS);
        globals.auditService.dispatch(new ExtendedHttpAuditEvent(globals.webSession.get().getSessionId(), globals.currentUser.get(), req, auditStartTs, params, inputRequestBody, status, result, rsrc, viewData == null ? null : viewData.view));
    }
}

Example 2 with PreconditionFailedException

use of com.google.gerrit.extensions.restapi.PreconditionFailedException in project gerrit by GerritCodeReview.

the class PreviewSubmit method apply.

@Override
public BinaryResult apply(RevisionResource rsrc) throws UpdateException, RestApiException {
    // to get access to a BatchUpdate.Factory.
    return retryHelper.execute((updateFactory) -> {
        if (Strings.isNullOrEmpty(format)) {
            throw new BadRequestException("format is not specified");
        }
        ArchiveFormat f = allowedFormats.extensions.get("." + format);
        if (f == null && format.equals("tgz")) {
            // Always allow tgz, even when the allowedFormats doesn't contain it.
            // Then we allow at least one format even if the list of allowed
            // formats is empty.
            f = ArchiveFormat.TGZ;
        }
        if (f == null) {
            throw new BadRequestException("unknown archive format");
        }
        Change change = rsrc.getChange();
        if (!change.getStatus().isOpen()) {
            throw new PreconditionFailedException("change is " + ChangeUtil.status(change));
        }
        ChangeControl control = rsrc.getControl();
        if (!control.getUser().isIdentifiedUser()) {
            throw new MethodNotAllowedException("Anonymous users cannot submit");
        }
        return getBundles(updateFactory, rsrc, f);
    });
}