mirror of https://gitee.com/bigwinds/arangodb
138 lines
4.8 KiB
C++
138 lines
4.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief document changes subscription handler
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2010-2014, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "RestSubscribeHandler.h"
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#include "Rest/HttpRequest.h"
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#include "VocBase/document-collection.h"
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#include "VocBase/vocbase.h"
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using namespace std;
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using namespace triagens::basics;
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using namespace triagens::rest;
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using namespace triagens::arango;
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors and destructors
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief constructor
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////////////////////////////////////////////////////////////////////////////////
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RestSubscribeHandler::RestSubscribeHandler (HttpRequest* request)
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: RestVocbaseBaseHandler(request) {
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- Handler methods
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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////////////////////////////////////////////////////////////////////////////////
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HttpHandler::status_t RestSubscribeHandler::execute () {
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// extract the sub-request type
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HttpRequest::HttpRequestType type = _request->requestType();
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switch (type) {
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case HttpRequest::HTTP_REQUEST_POST: addSubscription(); break;
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case HttpRequest::HTTP_REQUEST_ILLEGAL:
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default: {
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generateNotImplemented("ILLEGAL " + DOCUMENT_PATH);
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break;
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}
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}
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// this handler is done
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return status_t(HANDLER_DONE);
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- private methods
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// -----------------------------------------------------------------------------
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void RestSubscribeHandler::addSubscription () {
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std::unique_ptr<TRI_json_t> json(parseJsonBody());
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if (json == nullptr) {
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return;
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}
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if (json->_type != TRI_JSON_OBJECT) {
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generateError(HttpResponse::BAD, TRI_ERROR_TYPE_ERROR, "expecting object in body");
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return;
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}
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std::vector<TRI_voc_cid_t> collections;
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auto const* value = TRI_LookupObjectJson(json.get(), "collections");
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if (TRI_IsArrayJson(value)) {
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for (size_t i = 0; i < TRI_LengthArrayJson(value); ++i) {
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auto n = static_cast<TRI_json_t const*>(TRI_AtVector(&value->_value._objects, i));
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if (! TRI_IsStringJson(n)) {
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generateError(HttpResponse::BAD, TRI_ERROR_TYPE_ERROR, "expecting array of strings for 'collections'");
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return;
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}
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TRI_vocbase_col_t const* collection = TRI_LookupCollectionByNameVocBase(_vocbase, n->_value._string.data);
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if (collection == nullptr) {
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generateError(HttpResponse::NOT_FOUND, TRI_ERROR_ARANGO_COLLECTION_NOT_FOUND);
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return;
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}
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collections.emplace_back(collection->_cid);
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}
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}
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if (collections.empty()) {
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generateError(HttpResponse::BAD, TRI_ERROR_TYPE_ERROR, "expecting array of strings for 'collections'");
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return;
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}
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_response = createResponse(HttpResponse::OK);
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_response->setHeader("transfer-encoding", "chunked");
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_response->body().appendText("ok");
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AddChangeListeners(_request->clientTaskId(), collections);
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}
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @page\\|// --SECTION--\\|/// @\\}"
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// End:
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