mirror of https://gitee.com/bigwinds/arangodb
132 lines
4.7 KiB
C++
132 lines
4.7 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 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 Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#include "V8Executor.h"
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#include "Aql/AqlFunctionFeature.h"
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#include "Aql/AstNode.h"
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#include "Aql/Functions.h"
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#include "Aql/Variable.h"
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#include "Basics/Exceptions.h"
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#include "Basics/StringBuffer.h"
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#include "V8/v8-conv.h"
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#include "V8/v8-globals.h"
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#include "V8/v8-utils.h"
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#include "V8/v8-vpack.h"
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using namespace arangodb::aql;
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/// @brief checks if a V8 exception has occurred and throws an appropriate C++
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/// exception from it if so
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void V8Executor::HandleV8Error(v8::TryCatch& tryCatch, v8::Handle<v8::Value>& result,
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arangodb::basics::StringBuffer* const buffer,
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bool duringCompile) {
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ISOLATE;
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v8::Local<v8::Context> context = isolate->GetCurrentContext();
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bool failed = false;
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if (tryCatch.HasCaught()) {
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// caught a V8 exception
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if (!tryCatch.CanContinue()) {
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// request was canceled
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TRI_GET_GLOBALS();
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v8g->_canceled = true;
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THROW_ARANGO_EXCEPTION(TRI_ERROR_REQUEST_CANCELED);
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}
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// request was not canceled, but some other error occurred
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// peek into the exception
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if (tryCatch.Exception()->IsObject()) {
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// cast the exception to an object
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v8::Handle<v8::Array> objValue = v8::Handle<v8::Array>::Cast(tryCatch.Exception());
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v8::Handle<v8::String> errorNum =
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TRI_V8_ASCII_STRING(isolate, "errorNum");
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v8::Handle<v8::String> errorMessage =
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TRI_V8_ASCII_STRING(isolate, "errorMessage");
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TRI_Utf8ValueNFC stacktrace(isolate, tryCatch.StackTrace(TRI_IGETC).FromMaybe(v8::Local<v8::Value>()));
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if (TRI_HasProperty(context, isolate, objValue, errorNum) &&
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TRI_HasProperty(context, isolate, objValue, errorMessage)) {
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v8::Handle<v8::Value> errorNumValue = objValue->Get(errorNum);
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v8::Handle<v8::Value> errorMessageValue = objValue->Get(errorMessage);
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// found something that looks like an ArangoError
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if ((errorNumValue->IsNumber() || errorNumValue->IsNumberObject()) &&
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(errorMessageValue->IsString() || errorMessageValue->IsStringObject())) {
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int errorCode = static_cast<int>(TRI_ObjectToInt64(isolate, errorNumValue));
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std::string errorMessage(TRI_ObjectToString(isolate, errorMessageValue));
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if (*stacktrace && stacktrace.length() > 0) {
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errorMessage += "\nstacktrace of offending AQL function: ";
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errorMessage += *stacktrace;
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}
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THROW_ARANGO_EXCEPTION_MESSAGE(errorCode, errorMessage);
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}
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}
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// exception is no ArangoError
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std::string details(TRI_ObjectToString(isolate, tryCatch.Exception()));
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if (buffer) {
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// std::string script(buffer->c_str(), buffer->length());
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LOG_TOPIC("98afd", ERR, arangodb::Logger::FIXME)
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<< details << " " << Logger::CHARS(buffer->c_str(), buffer->length());
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details += "\nSee log for more details";
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}
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if (*stacktrace && stacktrace.length() > 0) {
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details += "\nstacktrace of offending AQL function: ";
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details += *stacktrace;
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}
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THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_QUERY_SCRIPT, details);
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}
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failed = true;
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}
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if (result.IsEmpty()) {
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failed = true;
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}
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if (failed) {
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std::string msg("unknown error in scripting");
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if (duringCompile) {
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msg += " (during compilation)";
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}
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if (buffer) {
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// std::string script(buffer->c_str(), buffer->length());
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LOG_TOPIC("477ee", ERR, arangodb::Logger::FIXME)
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<< msg << " " << Logger::CHARS(buffer->c_str(), buffer->length());
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msg += " See log for details";
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}
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// we can't figure out what kind of error occurred and throw a generic error
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THROW_ARANGO_EXCEPTION_MESSAGE(TRI_ERROR_QUERY_SCRIPT, msg);
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}
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// if we get here, no exception has been raised
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}
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