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arangodb/arangosh/V8Client/V8ClientConnection.cpp

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////////////////////////////////////////////////////////////////////////////////
/// @brief v8 client connection
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2004-2013 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Achim Brandt
/// @author Copyright 2008-2013, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////
#include "V8ClientConnection.h"
#include <sstream>
#include "Basics/JsonHelper.h"
#include "Basics/StringUtils.h"
#include "BasicsC/json.h"
#include "BasicsC/tri-strings.h"
#include "Rest/HttpRequest.h"
#include "Rest/HttpResponse.h"
#include "SimpleHttpClient/GeneralClientConnection.h"
#include "SimpleHttpClient/SimpleHttpClient.h"
#include "SimpleHttpClient/SimpleHttpResult.h"
#include "V8/v8-conv.h"
using namespace triagens::basics;
using namespace triagens::httpclient;
using namespace triagens::rest;
using namespace triagens::v8client;
using namespace std;
// -----------------------------------------------------------------------------
// --SECTION-- constructors and destructors
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @brief constructor
////////////////////////////////////////////////////////////////////////////////
V8ClientConnection::V8ClientConnection (Endpoint* endpoint,
string databaseName,
const string& username,
const string& password,
double requestTimeout,
double connectTimeout,
size_t numRetries,
uint32_t sslProtocol,
bool warn)
: _connection(0),
_databaseName(databaseName),
_lastHttpReturnCode(0),
_lastErrorMessage(""),
_client(0),
_httpResult(0) {
_connection = GeneralClientConnection::factory(endpoint, requestTimeout, connectTimeout, numRetries, sslProtocol);
if (_connection == 0) {
throw "out of memory";
}
_client = new SimpleHttpClient(_connection, requestTimeout, warn);
if (_client == 0) {
LOG_FATAL_AND_EXIT("out of memory");
}
_client->setLocationRewriter(this, &rewriteLocation);
_client->setUserNamePassword("/", username, password);
// connect to server and get version number
map<string, string> headerFields;
SimpleHttpResult* result = _client->request(HttpRequest::HTTP_REQUEST_GET, "/_api/version", 0, 0, headerFields);
if (! result || ! result->isComplete()) {
// save error message
_lastErrorMessage = _client->getErrorMessage();
_lastHttpReturnCode = 500;
}
else {
_lastHttpReturnCode = result->getHttpReturnCode();
if (result->getHttpReturnCode() == HttpResponse::OK) {
// default value
_version = "arango";
// convert response body to json
TRI_json_t* json = TRI_JsonString(TRI_UNKNOWN_MEM_ZONE,
result->getBody().c_str());
if (json) {
// look up "server" value
const string server = JsonHelper::getStringValue(json, "server", "");
// "server" value is a string and content is "arango"
if (server == "arango") {
// look up "version" value
_version = JsonHelper::getStringValue(json, "version", "");
}
TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, json);
}
}
else {
// initial request for /_api/version return some non-HTTP 200 response.
// now set up an error message
_lastErrorMessage = _client->getErrorMessage();
if (result) {
_lastErrorMessage = StringUtils::itoa(result->getHttpReturnCode()) + ": " + result->getHttpReturnMessage();
}
}
}
if (result) {
delete result;
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief destructor
////////////////////////////////////////////////////////////////////////////////
V8ClientConnection::~V8ClientConnection () {
if (_httpResult) {
delete _httpResult;
}
if (_client) {
delete _client;
}
if (_connection) {
delete _connection;
}
}
// -----------------------------------------------------------------------------
// --SECTION-- public functions
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @brief request location rewriter (injects database name)
////////////////////////////////////////////////////////////////////////////////
string V8ClientConnection::rewriteLocation (void* data,
const string& location) {
V8ClientConnection* c = static_cast<V8ClientConnection*>(data);
assert(c != 0);
if (c->_databaseName.empty()) {
// no database name provided
return location;
}
if (location.substr(0, 5) == "/_db/") {
// location already contains /_db/
return location;
}
if (location[0] == '/') {
return "/_db/" + c->_databaseName + location;
}
else {
return "/_db/" + c->_databaseName + "/" + location;
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief returns true if it is connected
////////////////////////////////////////////////////////////////////////////////
bool V8ClientConnection::isConnected () {
return _connection->isConnected();
}
////////////////////////////////////////////////////////////////////////////////
/// @brief returns the current database name
////////////////////////////////////////////////////////////////////////////////
const string& V8ClientConnection::getDatabaseName () {
return _databaseName;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief set the current database name
////////////////////////////////////////////////////////////////////////////////
void V8ClientConnection::setDatabaseName (const string& databaseName) {
_databaseName = databaseName;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief returns the version and build number of the arango server
////////////////////////////////////////////////////////////////////////////////
const string& V8ClientConnection::getVersion () {
return _version;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief get the last http return code
////////////////////////////////////////////////////////////////////////////////
int V8ClientConnection::getLastHttpReturnCode () {
return _lastHttpReturnCode;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief get the last error message
////////////////////////////////////////////////////////////////////////////////
const std::string& V8ClientConnection::getErrorMessage () {
return _lastErrorMessage;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief get the simple http client
////////////////////////////////////////////////////////////////////////////////
triagens::httpclient::SimpleHttpClient* V8ClientConnection::getHttpClient() {
return _client;
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do a "GET" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::getData (std::string const& location,
map<string, string> const& headerFields,
bool raw) {
if (raw) {
return requestDataRaw(HttpRequest::HTTP_REQUEST_GET, location, "", headerFields);
}
else {
return requestData(HttpRequest::HTTP_REQUEST_GET, location, "", headerFields);
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do a "DELETE" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::deleteData (std::string const& location,
map<string, string> const& headerFields,
bool raw) {
if (raw) {
return requestDataRaw(HttpRequest::HTTP_REQUEST_DELETE, location, "", headerFields);
}
else {
return requestData(HttpRequest::HTTP_REQUEST_DELETE, location, "", headerFields);
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do a "HEAD" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::headData (std::string const& location,
map<string, string> const& headerFields,
bool raw) {
if (raw) {
return requestDataRaw(HttpRequest::HTTP_REQUEST_HEAD, location, "", headerFields);
}
else {
return requestData(HttpRequest::HTTP_REQUEST_HEAD, location, "", headerFields);
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do an "OPTIONS" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::optionsData (std::string const& location,
std::string const& body,
map<string, string> const& headerFields,
bool raw) {
if (raw) {
return requestDataRaw(HttpRequest::HTTP_REQUEST_OPTIONS, location, body, headerFields);
}
else {
return requestData(HttpRequest::HTTP_REQUEST_OPTIONS, location, body, headerFields);
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do a "POST" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::postData (std::string const& location,
std::string const& body,
map<string, string> const& headerFields,
bool raw) {
if (raw) {
return requestDataRaw(HttpRequest::HTTP_REQUEST_POST, location, body, headerFields);
}
else {
return requestData(HttpRequest::HTTP_REQUEST_POST, location, body, headerFields);
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do a "POST" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::postData (std::string const& location,
const char* body,
const size_t bodySize,
map<string, string> const& headerFields) {
return requestData(HttpRequest::HTTP_REQUEST_POST, location, body, bodySize, headerFields);
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do a "PUT" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::putData (std::string const& location,
std::string const& body,
map<string, string> const& headerFields,
bool raw) {
if (raw) {
return requestDataRaw(HttpRequest::HTTP_REQUEST_PUT, location, body, headerFields);
}
else {
return requestData(HttpRequest::HTTP_REQUEST_PUT, location, body, headerFields);
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief do a "PATCH" request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::patchData (std::string const& location,
std::string const& body,
map<string, string> const& headerFields,
bool raw) {
if (raw) {
return requestDataRaw(HttpRequest::HTTP_REQUEST_PATCH, location, body, headerFields);
}
else {
return requestData(HttpRequest::HTTP_REQUEST_PATCH, location, body, headerFields);
}
}
// -----------------------------------------------------------------------------
// --SECTION-- private functions
// -----------------------------------------------------------------------------
////////////////////////////////////////////////////////////////////////////////
/// @brief executes a request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::requestData (HttpRequest::HttpRequestType method,
string const& location,
const char* body,
const size_t bodySize,
map<string, string> const& headerFields) {
_lastErrorMessage = "";
_lastHttpReturnCode = 0;
if (_httpResult) {
delete _httpResult;
}
_httpResult = _client->request(method, location, body, bodySize, headerFields);
return handleResult();
}
////////////////////////////////////////////////////////////////////////////////
/// @brief executes a request
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::requestData (HttpRequest::HttpRequestType method,
string const& location,
string const& body,
map<string, string> const& headerFields) {
_lastErrorMessage = "";
_lastHttpReturnCode = 0;
if (_httpResult) {
delete _httpResult;
}
if (body.empty()) {
_httpResult = _client->request(method, location, 0, 0, headerFields);
}
else {
_httpResult = _client->request(method, location, body.c_str(), body.length(), headerFields);
}
return handleResult();
}
////////////////////////////////////////////////////////////////////////////////
/// @brief handles a result
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::handleResult () {
if (!_httpResult->isComplete()) {
// not complete
_lastErrorMessage = _client->getErrorMessage();
if (_lastErrorMessage.empty()) {
_lastErrorMessage = "Unknown error";
}
_lastHttpReturnCode = HttpResponse::SERVER_ERROR;
v8::Handle<v8::Object> result = v8::Object::New();
result->Set(v8::String::New("error"), v8::Boolean::New(true));
result->Set(v8::String::New("code"), v8::Integer::New(HttpResponse::SERVER_ERROR));
int errorNumber = 0;
switch (_httpResult->getResultType()) {
case (SimpleHttpResult::COULD_NOT_CONNECT) :
errorNumber = TRI_SIMPLE_CLIENT_COULD_NOT_CONNECT;
break;
case (SimpleHttpResult::READ_ERROR) :
errorNumber = TRI_SIMPLE_CLIENT_COULD_NOT_READ;
break;
case (SimpleHttpResult::WRITE_ERROR) :
errorNumber = TRI_SIMPLE_CLIENT_COULD_NOT_WRITE;
break;
default:
errorNumber = TRI_SIMPLE_CLIENT_UNKNOWN_ERROR;
break;
}
result->Set(v8::String::New("errorNum"), v8::Integer::New(errorNumber));
result->Set(v8::String::New("errorMessage"), v8::String::New(_lastErrorMessage.c_str(), (int) _lastErrorMessage.length()));
return result;
}
else {
// complete
_lastHttpReturnCode = _httpResult->getHttpReturnCode();
// got a body
StringBuffer& sb = _httpResult->getBody();
if (sb.length() > 0) {
string contentType = _httpResult->getContentType(true);
if (contentType == "application/json") {
TRI_json_t* js = TRI_JsonString(TRI_UNKNOWN_MEM_ZONE, sb.c_str());
if (js != NULL) {
// return v8 object
v8::Handle<v8::Value> result = TRI_ObjectJson(js);
TRI_FreeJson(TRI_UNKNOWN_MEM_ZONE, js);
return result;
}
}
// return body as string
//
v8::Handle<v8::String> result = v8::String::New(sb.c_str(),
(int) sb.length());
return result;
}
else {
// no body
v8::HandleScope scope;
v8::Handle<v8::Object> result = v8::Object::New();
result->Set(v8::String::New("code"), v8::Integer::New(_lastHttpReturnCode));
if (_lastHttpReturnCode >= 400) {
string returnMessage(_httpResult->getHttpReturnMessage());
result->Set(v8::String::New("error"), v8::Boolean::New(true));
result->Set(v8::String::New("errorNum"), v8::Integer::New(_lastHttpReturnCode));
result->Set(v8::String::New("errorMessage"), v8::String::New(returnMessage.c_str(), (int) returnMessage.size()));
}
else {
result->Set(v8::String::New("error"), v8::Boolean::New(false));
}
return scope.Close(result);
}
}
}
////////////////////////////////////////////////////////////////////////////////
/// @brief executes a request and returns raw response
////////////////////////////////////////////////////////////////////////////////
v8::Handle<v8::Value> V8ClientConnection::requestDataRaw (HttpRequest::HttpRequestType method,
string const& location,
string const& body,
map<string, string> const& headerFields) {
v8::HandleScope scope;
_lastErrorMessage = "";
_lastHttpReturnCode = 0;
if (_httpResult) {
delete _httpResult;
}
if (body.empty()) {
_httpResult = _client->request(method, location, 0, 0, headerFields);
}
else {
_httpResult = _client->request(method, location, body.c_str(), body.length(), headerFields);
}
if (!_httpResult->isComplete()) {
// not complete
_lastErrorMessage = _client->getErrorMessage();
if (_lastErrorMessage.empty()) {
_lastErrorMessage = "Unknown error";
}
_lastHttpReturnCode = HttpResponse::SERVER_ERROR;
v8::Handle<v8::Object> result = v8::Object::New();
result->Set(v8::String::New("code"), v8::Integer::New(HttpResponse::SERVER_ERROR));
int errorNumber = 0;
switch (_httpResult->getResultType()) {
case (SimpleHttpResult::COULD_NOT_CONNECT) :
errorNumber = TRI_SIMPLE_CLIENT_COULD_NOT_CONNECT;
break;
case (SimpleHttpResult::READ_ERROR) :
errorNumber = TRI_SIMPLE_CLIENT_COULD_NOT_READ;
break;
case (SimpleHttpResult::WRITE_ERROR) :
errorNumber = TRI_SIMPLE_CLIENT_COULD_NOT_WRITE;
break;
default:
errorNumber = TRI_SIMPLE_CLIENT_UNKNOWN_ERROR;
break;
}
result->Set(v8::String::New("errorNum"), v8::Integer::New(errorNumber));
result->Set(v8::String::New("errorMessage"), v8::String::New(_lastErrorMessage.c_str(), (int) _lastErrorMessage.length()));
return scope.Close(result);
}
else {
// complete
_lastHttpReturnCode = _httpResult->getHttpReturnCode();
// create raw response
v8::Handle<v8::Object> result = v8::Object::New();
result->Set(v8::String::New("code"), v8::Integer::New(_lastHttpReturnCode));
if (_lastHttpReturnCode >= 400) {
string returnMessage(_httpResult->getHttpReturnMessage());
result->Set(v8::String::New("error"), v8::Boolean::New(true));
result->Set(v8::String::New("errorNum"), v8::Integer::New(_lastHttpReturnCode));
result->Set(v8::String::New("errorMessage"), v8::String::New(returnMessage.c_str(), (int) returnMessage.size()));
}
else {
result->Set(v8::String::New("error"), v8::Boolean::New(false));
}
// got a body, copy it into the result
StringBuffer& sb = _httpResult->getBody();
if (sb.length() > 0) {
v8::Handle<v8::String> b = v8::String::New(sb.c_str(), (int) sb.length());
result->Set(v8::String::New("body"), b);
}
// copy all headers
v8::Handle<v8::Object> headers = v8::Object::New();
const map<string, string>& hf = _httpResult->getHeaderFields();
for (map<string, string>::const_iterator i = hf.begin(); i != hf.end(); ++i) {
v8::Handle<v8::String> key = v8::String::New(i->first.c_str(), (int) i->first.size());
v8::Handle<v8::String> val = v8::String::New(i->second.c_str(), (int) i->second.size());
headers->Set(key, val);
}
result->Set(v8::String::New("headers"), headers);
// and returns
return scope.Close(result);
}
}
// -----------------------------------------------------------------------------
// --SECTION-- END-OF-FILE
// -----------------------------------------------------------------------------
// Local Variables:
// mode: outline-minor
// outline-regexp: "/// @brief\\|/// {@inheritDoc}\\|/// @addtogroup\\|/// @page\\|// --SECTION--\\|/// @\\}"
// End:
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