mirror of https://gitee.com/bigwinds/arangodb
550 lines
17 KiB
C++
550 lines
17 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief import request 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 2004-2012 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 triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2010-2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#include "RestImportHandler.h"
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#include "Basics/StringUtils.h"
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#include "BasicsC/string-buffer.h"
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#include "BasicsC/strings.h"
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#include "Rest/HttpRequest.h"
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#include "Rest/JsonContainer.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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/// @addtogroup ArangoDB
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief constructor
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////////////////////////////////////////////////////////////////////////////////
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RestImportHandler::RestImportHandler (HttpRequest* request, TRI_vocbase_t* vocbase)
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: RestVocbaseBaseHandler(request, vocbase) {
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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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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/// @addtogroup ArangoDB
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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////////////////////////////////////////////////////////////////////////////////
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bool RestImportHandler::isDirect () {
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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////////////////////////////////////////////////////////////////////////////////
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string const& RestImportHandler::queue () {
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static string const client = "STANDARD";
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return client;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// {@inheritDoc}
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////////////////////////////////////////////////////////////////////////////////
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HttpHandler::status_e RestImportHandler::execute () {
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// extract the sub-request type
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HttpRequest::HttpRequestType type = _request->requestType();
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// prepare logging
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static LoggerData::Task const logCreate(DOCUMENT_IMPORT_PATH + " [create]");
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static LoggerData::Task const logIllegal(DOCUMENT_IMPORT_PATH + " [illegal]");
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LoggerData::Task const * task = &logCreate;
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switch (type) {
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case HttpRequest::HTTP_REQUEST_POST: task = &logCreate; break;
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default: task = &logIllegal; break;
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}
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_timing << *task;
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LOGGER_REQUEST_IN_START_I(_timing);
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// execute one of the CRUD methods
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bool res = false;
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switch (type) {
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case HttpRequest::HTTP_REQUEST_POST: {
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// extract the import type
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bool found;
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string documentType = _request->value("type", found);
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if (found && documentType == "documents") {
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res = createByArray();
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}
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else {
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res = createByList();
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}
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}
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break;
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default:
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res = false;
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generateNotImplemented("ILLEGAL " + DOCUMENT_IMPORT_PATH);
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break;
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}
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_timingResult = res ? RES_ERR : RES_OK;
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// this handler is done
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return HANDLER_DONE;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- protected methods
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup ArangoDB
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief creates documents
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///
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/// @REST{POST /_api/import?type=documents&collection=@FA{collection-identifier}}
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///
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/// Creates documents in the collection identified by the
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/// @FA{collection-identifier}. The JSON representations of the documents must
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/// be passed as the body of the POST request.
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///
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/// If the document was created successfully, then a @LIT{HTTP 201} is returned.
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////////////////////////////////////////////////////////////////////////////////
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bool RestImportHandler::createByArray () {
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size_t numCreated = 0;
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size_t numError = 0;
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size_t numEmpty = 0;
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vector<string> const& suffix = _request->suffix();
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if (suffix.size() != 0) {
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generateError(HttpResponse::BAD,
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TRI_ERROR_HTTP_SUPERFLUOUS_SUFFICES,
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"superfluous suffix, expecting " + DOCUMENT_IMPORT_PATH + "?type=documents&collection=<identifier>");
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return false;
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}
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// extract the collection name
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bool found;
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string collection = _request->value("collection", found);
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if (! found || collection.empty()) {
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generateError(HttpResponse::BAD,
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TRI_ERROR_ARANGO_COLLECTION_PARAMETER_MISSING,
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"'collection' is missing, expecting " + DOCUMENT_IMPORT_PATH + "?collection=<identifier>");
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return false;
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}
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// shall we create the collection?
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char const* valueStr = _request->value("createCollection", found);
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bool create = found ? StringUtils::boolean(valueStr) : false;
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// shall we reuse document and revision id?
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valueStr = _request->value("useId", found);
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bool reuseId = found ? StringUtils::boolean(valueStr) : false;
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// find and load collection given by name or identifier
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CollectionAccessor ca(_vocbase, collection, TRI_COL_TYPE_DOCUMENT, create);
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int res = ca.use();
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if (TRI_ERROR_NO_ERROR != res) {
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generateCollectionError(collection, res);
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return false;
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}
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// .............................................................................
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// inside write transaction
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// .............................................................................
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WriteTransaction trx(&ca);
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size_t start = 0;
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size_t next = 0;
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string line;
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string body(_request->body(), _request->bodySize());
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while (next != string::npos && start < body.size()) {
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next = body.find('\n', start);
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if (next == string::npos) {
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line = body.substr(start);
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}
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else {
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line = body.substr(start, next - start);
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start = next + 1;
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}
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StringUtils::trimInPlace(line, "\r\n\t ");
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if (line.length() == 0) {
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++numEmpty;
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continue;
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}
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TRI_json_t* values = parseJsonLine(line);
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if (values) {
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// now save the document
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TRI_doc_mptr_t const mptr = trx.primary()->createJson(trx.primary(), TRI_DOC_MARKER_DOCUMENT, values, 0, reuseId, false);
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if (mptr._did != 0) {
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++numCreated;
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}
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else {
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++numError;
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}
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, values);
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}
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else {
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LOGGER_WARNING << "no valid JSON data in line " << line;
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++numError;
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}
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}
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trx.end();
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// .............................................................................
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// outside write transaction
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// .............................................................................
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// generate result
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generateDocumentsCreated(numCreated, numError, numEmpty);
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @brief creates documents
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///
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/// @REST{POST /_api/import?collection=@FA{collection-identifier}}
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///
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/// Creates documents in the collection identified by the
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/// @FA{collection-identifier}. The JSON representations of the documents must
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/// be passed as the body of the POST request.
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///
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/// If the document was created successfully, then a @LIT{HTTP 201} is returned.
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////////////////////////////////////////////////////////////////////////////////
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bool RestImportHandler::createByList () {
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size_t numCreated = 0;
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size_t numError = 0;
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size_t numEmpty = 0;
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vector<string> const& suffix = _request->suffix();
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if (suffix.size() != 0) {
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generateError(HttpResponse::BAD,
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TRI_ERROR_HTTP_SUPERFLUOUS_SUFFICES,
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"superfluous suffix, expecting " + DOCUMENT_IMPORT_PATH + "?collection=<identifier>");
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return false;
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}
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// extract the collection name
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bool found;
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string collection = _request->value("collection", found);
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if (! found || collection.empty()) {
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generateError(HttpResponse::BAD,
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TRI_ERROR_ARANGO_COLLECTION_PARAMETER_MISSING,
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"'collection' is missing, expecting " + DOCUMENT_IMPORT_PATH + "?collection=<identifier>");
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return false;
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}
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// shall we create the collection?
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char const* valueStr = _request->value("createCollection", found);
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bool create = found ? StringUtils::boolean(valueStr) : false;
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// shall we reuse document and revision id?
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valueStr = _request->value("useId", found);
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bool reuseId = found ? StringUtils::boolean(valueStr) : false;
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size_t start = 0;
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string body(_request->body(), _request->bodySize());
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size_t next = body.find('\n', start);
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if (next == string::npos) {
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generateError(HttpResponse::BAD,
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TRI_ERROR_HTTP_BAD_PARAMETER,
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"no JSON list in second line found");
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return false;
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}
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TRI_json_t* keys = 0;
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string line = body.substr(start, next);
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StringUtils::trimInPlace(line, "\r\n\t ");
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// get first line
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if (line != "") {
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keys = parseJsonLine(line);
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if (!keys) {
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LOGGER_WARNING << "no JSON data in first line";
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generateError(HttpResponse::BAD,
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TRI_ERROR_HTTP_BAD_PARAMETER,
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"no JSON string list in first line found");
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return false;
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}
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if (keys->_type == TRI_JSON_LIST) {
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if (!checkKeys(keys)) {
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LOGGER_WARNING << "no JSON string list in first line found";
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, keys);
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generateError(HttpResponse::BAD,
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TRI_ERROR_HTTP_BAD_PARAMETER,
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"no JSON string list in first line found");
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return false;
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}
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start = next + 1;
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}
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else {
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LOGGER_WARNING << "no JSON string list in first line found";
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, keys);
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generateError(HttpResponse::BAD,
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TRI_ERROR_HTTP_BAD_PARAMETER,
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"no JSON string list in first line found");
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return false;
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}
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}
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else {
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LOGGER_WARNING << "no JSON string list in first line found";
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generateError(HttpResponse::BAD,
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TRI_ERROR_HTTP_BAD_PARAMETER,
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"no JSON string list in first line found");
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return false;
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}
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// find and load collection given by name or identifier
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CollectionAccessor ca(_vocbase, collection, TRI_COL_TYPE_DOCUMENT, create);
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int res = ca.use();
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if (TRI_ERROR_NO_ERROR != res) {
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if (keys) {
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, keys);
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}
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generateCollectionError(collection, res);
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return false;
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}
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// .............................................................................
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// inside write transaction
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// .............................................................................
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WriteTransaction trx(&ca);
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while (next != string::npos && start < body.length()) {
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next = body.find('\n', start);
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if (next == string::npos) {
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line = body.substr(start);
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}
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else {
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line = body.substr(start, next - start);
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start = next + 1;
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}
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StringUtils::trimInPlace(line, "\r\n\t ");
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if (line.length() == 0) {
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++numEmpty;
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continue;
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}
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//LOGGER_TRACE << "line = " << line;
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TRI_json_t* values = parseJsonLine(line);
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TRI_json_t* json = 0;
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if (values) {
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// got a json document or list
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// build the json object from the list
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json = createJsonObject(keys, values, line);
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, values);
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if (!json) {
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++numError;
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continue;
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}
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// now save the document
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TRI_doc_mptr_t const mptr = trx.primary()->createJson(trx.primary(), TRI_DOC_MARKER_DOCUMENT, json, 0, reuseId, false);
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if (mptr._did != 0) {
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++numCreated;
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}
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else {
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++numError;
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}
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
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}
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else {
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LOGGER_WARNING << "no valid JSON data in line: " << line;
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++numError;
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}
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}
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if (keys) {
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TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, keys);
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}
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trx.end();
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// .............................................................................
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// outside write transaction
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// .............................................................................
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// generate result
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generateDocumentsCreated(numCreated, numError, numEmpty);
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return true;
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}
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void RestImportHandler::generateDocumentsCreated (size_t numCreated, size_t numError, size_t numEmpty) {
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_response = new HttpResponse(HttpResponse::CREATED);
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_response->setContentType("application/json; charset=utf-8");
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_response->body()
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.appendText("{\"error\":false,\"created\":")
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.appendInteger(numCreated)
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.appendText(",\"errors\":")
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.appendInteger(numError)
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.appendText(",\"empty\":")
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.appendInteger(numEmpty)
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.appendText("}");
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}
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TRI_json_t* RestImportHandler::parseJsonLine (const string& line) {
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char* errmsg = 0;
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TRI_json_t* json = TRI_Json2String(TRI_UNKNOWN_MEM_ZONE, line.c_str(), &errmsg);
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if (errmsg != 0) {
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// must free this error message, otherwise we'll have a memleak
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TRI_FreeString(TRI_UNKNOWN_MEM_ZONE, errmsg);
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}
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return json;
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}
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TRI_json_t* RestImportHandler::createJsonObject (TRI_json_t* keys, TRI_json_t* values, const string& line) {
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if (values->_type != TRI_JSON_LIST) {
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LOGGER_WARNING << "no valid JSON list data in line: " << line;
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return 0;
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}
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if (keys->_value._objects._length != values->_value._objects._length) {
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LOGGER_WARNING << "wrong number of JSON values in line: " << line;
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return 0;
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}
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TRI_json_t* result = TRI_CreateArrayJson(TRI_UNKNOWN_MEM_ZONE);
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if (result == 0) {
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LOGGER_ERROR << "out of memory";
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return 0;
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}
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size_t n = keys->_value._objects._length;
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for (size_t i = 0; i < n; ++i) {
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TRI_json_t* key = (TRI_json_t*) TRI_AtVector(&keys->_value._objects, i);
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TRI_json_t* value = (TRI_json_t*) TRI_AtVector(&values->_value._objects, i);
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if (key->_type == TRI_JSON_STRING && value->_type > TRI_JSON_NULL) {
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TRI_InsertArrayJson(TRI_UNKNOWN_MEM_ZONE, result, key->_value._string.data, value);
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}
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}
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return result;
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}
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bool RestImportHandler::checkKeys (TRI_json_t* keys) {
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if (keys->_type != TRI_JSON_LIST) {
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return false;
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}
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size_t n = keys->_value._objects._length;
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if (n == 0) {
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return false;
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}
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for (size_t i = 0; i < n; ++i) {
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TRI_json_t* key = (TRI_json_t*) TRI_AtVector(&keys->_value._objects, i);
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if (key->_type != TRI_JSON_STRING) {
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return false;
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}
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}
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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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}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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