void Bindings::destroy(const Args& args)
{
Isolate* isolate(args.GetIsolate());
HandleScope scope(isolate);
Bindings* obj = ObjectWrap::Unwrap<Bindings>(args.Holder());
obj->m_session.reset();
}
void Bindings::info(const Args& args)
{
Isolate* isolate(args.GetIsolate());
HandleScope scope(isolate);
Bindings* obj = ObjectWrap::Unwrap<Bindings>(args.Holder());
const std::string info(obj->m_session->info());
args.GetReturnValue().Set(String::NewFromUtf8(isolate, info.c_str()));
}
void Bindings::construct(const Args& args)
{
Isolate* isolate(args.GetIsolate());
HandleScope scope(isolate);
if (args.IsConstructCall())
{
// Invoked as constructor with 'new'.
Bindings* obj = new Bindings();
obj->Wrap(args.Holder());
args.GetReturnValue().Set(args.Holder());
}
else
{
// Invoked as a function, turn into construct call.
Local<Function> ctor(Local<Function>::New(isolate, constructor));
args.GetReturnValue().Set(ctor->NewInstance());
}
}
void Bindings::hierarchy(const Args& args)
{
Isolate* isolate(args.GetIsolate());
HandleScope scope(isolate);
Bindings* obj = ObjectWrap::Unwrap<Bindings>(args.Holder());
std::size_t i(0);
const auto& queryArg(args[i++]);
const auto& cbArg (args[i++]);
std::string errMsg("");
if (!queryArg->IsObject()) errMsg += "\tInvalid query type";
if (!cbArg->IsFunction()) throw std::runtime_error("Invalid cb");
Local<Object> query(queryArg->ToObject());
UniquePersistent<Function> cb(isolate, Local<Function>::Cast(cbArg));
if (!errMsg.empty())
{
Status status(400, errMsg);
const unsigned argc = 1;
Local<Value> argv[argc] = { status.toObject(isolate) };
Local<Function> local(Local<Function>::New(isolate, cb));
local->Call(isolate->GetCurrentContext()->Global(), argc, argv);
return;
}
HierarchyCommand* hierarchyCommand(
HierarchyCommand::create(
isolate,
obj->m_session,
query,
std::move(cb)));
if (!hierarchyCommand) return;
// Store our command where our worker functions can access it.
uv_work_t* req(new uv_work_t);
req->data = hierarchyCommand;
// Read points asynchronously.
uv_queue_work(
uv_default_loop(),
req,
(uv_work_cb)([](uv_work_t* req)->void
{
HierarchyCommand* command(
static_cast<HierarchyCommand*>(req->data));
command->safe([command]()->void
{
try
{
command->run();
}
catch (...)
{
command->status.set(500, "Error during hierarchy");
}
});
}),
(uv_after_work_cb)([](uv_work_t* req, int status)->void
{
Isolate* isolate(Isolate::GetCurrent());
HandleScope scope(isolate);
HierarchyCommand* command(
static_cast<HierarchyCommand*>(req->data));
const unsigned argc = 2;
Local<Value> argv[argc] =
{
command->status.ok() ?
Local<Value>::New(isolate, Null(isolate)) : // err
command->status.toObject(isolate),
String::NewFromUtf8(isolate, command->result().c_str())
};
Local<Function> local(Local<Function>::New(isolate, command->cb()));
local->Call(isolate->GetCurrentContext()->Global(), argc, argv);
delete command;
delete req;
})
);
}
void Bindings::read(const Args& args)
{
Isolate* isolate(args.GetIsolate());
HandleScope scope(isolate);
Bindings* obj = ObjectWrap::Unwrap<Bindings>(args.Holder());
std::size_t i(0);
const auto& schemaArg (args[i++]);
const auto& filterArg (args[i++]);
const auto& compressArg (args[i++]);
const auto& scaleArg (args[i++]);
const auto& offsetArg (args[i++]);
const auto& queryArg (args[i++]);
const auto& initCbArg (args[i++]);
const auto& dataCbArg (args[i++]);
std::string errMsg("");
if (!schemaArg->IsString() && !schemaArg->IsUndefined())
errMsg += "\t'schema' must be a string or undefined";
if (!filterArg->IsString() && !filterArg->IsUndefined())
errMsg += "\t'schema' must be a string or undefined";
if (!compressArg->IsBoolean()) errMsg += "\t'compress' must be a boolean";
if (!queryArg->IsObject()) errMsg += "\tInvalid query type";
if (!initCbArg->IsFunction()) throw std::runtime_error("Invalid initCb");
if (!dataCbArg->IsFunction()) throw std::runtime_error("Invalid dataCb");
const std::string schemaString(
schemaArg->IsString() ?
*v8::String::Utf8Value(schemaArg->ToString()) :
"");
const std::string filterString(
filterArg->IsString() ?
*v8::String::Utf8Value(filterArg->ToString()) :
"");
const bool compress(compressArg->BooleanValue());
std::unique_ptr<entwine::Point> scale;
std::unique_ptr<entwine::Point> offset;
if (!scaleArg->IsNull())
{
scale = entwine::makeUnique<entwine::Point>(parsePoint(scaleArg));
if (!scale->x) scale->x = 1;
if (!scale->y) scale->y = 1;
if (!scale->z) scale->z = 1;
}
if (!offsetArg->IsNull())
{
offset = entwine::makeUnique<entwine::Point>(parsePoint(offsetArg));
}
Local<Object> query(queryArg->ToObject());
UniquePersistent<Function> initCb(
isolate,
Local<Function>::Cast(initCbArg));
UniquePersistent<Function> dataCb(
isolate,
Local<Function>::Cast(dataCbArg));
if (!errMsg.empty())
{
Status status(400, errMsg);
const unsigned argc = 1;
Local<Value> argv[argc] = { status.toObject(isolate) };
Local<Function> local(Local<Function>::New(isolate, initCb));
local->Call(isolate->GetCurrentContext()->Global(), argc, argv);
return;
}
ReadCommand* readCommand(nullptr);
try
{
readCommand = ReadCommand::create(
isolate,
obj->m_session,
obj->m_itcBufferPool,
schemaString,
filterString,
compress,
scale.get(),
offset.get(),
query,
uv_default_loop(),
std::move(initCb),
std::move(dataCb));
}
catch (std::runtime_error& e)
{
std::cout << "Could not create read command: " << e.what() << std::endl;
}
catch (...)
{
std::cout << "Could not create read command - unknown error" <<
std::endl;
}
if (!readCommand) return;
// Store our read command where our worker functions can access it.
uv_work_t* req(new uv_work_t);
req->data = readCommand;
// Read points asynchronously.
uv_queue_work(
uv_default_loop(),
req,
(uv_work_cb)([](uv_work_t* req)->void
{
ReadCommand* readCommand(static_cast<ReadCommand*>(req->data));
// Run the query. This will ensure indexing if needed, and
// will obtain everything needed to start streaming binary
// data to the client.
readCommand->safe([readCommand]()->void
{
try
{
readCommand->run();
}
catch (entwine::InvalidQuery& e)
{
std::cout << "Caught inv query: " << e.what() << std::endl;
readCommand->status.set(400, e.what());
}
catch (WrongQueryType& e)
{
std::cout << "Caught wrong query: " << e.what() << std::endl;
readCommand->status.set(400, e.what());
}
catch (std::exception& e)
{
std::cout << "Caught exception: " << e.what() << std::endl;
readCommand->status.set(400, e.what());
}
catch (...)
{
std::cout << "Caught unknown" << std::endl;
readCommand->status.set(500, "Error during query");
}
});
// Call initial informative callback. If status is no good, we're
// done here - don't continue for data.
readCommand->doCb(readCommand->initAsync());
if (!readCommand->status.ok()) return;
readCommand->safe([readCommand]()->void
{
readCommand->acquire();
try
{
do
{
readCommand->read();
readCommand->doCb(readCommand->dataAsync());
}
while (!readCommand->done() && readCommand->status.ok());
}
catch (std::runtime_error& e)
{
readCommand->status.set(500, e.what());
}
catch (...)
{
readCommand->status.set(500, "Error during query");
}
});
}),
(uv_after_work_cb)([](uv_work_t* req, int status)->void
{
Isolate* isolate(Isolate::GetCurrent());
HandleScope scope(isolate);
ReadCommand* readCommand(static_cast<ReadCommand*>(req->data));
if (readCommand->terminate())
{
std::cout << "Read was successfully terminated" << std::endl;
}
delete readCommand;
delete req;
})
);
}
void Bindings::create(const Args& args)
{
Isolate* isolate(args.GetIsolate());
HandleScope scope(isolate);
Bindings* obj = ObjectWrap::Unwrap<Bindings>(args.Holder());
if (args.Length() != 2)
{
throw std::runtime_error("Wrong number of arguments to create");
}
std::size_t i(0);
const auto& nameArg (args[i++]);
const auto& cbArg (args[i++]);
std::string errMsg;
if (!nameArg->IsString()) errMsg += "\t'name' must be a string";
if (!cbArg->IsFunction()) throw std::runtime_error("Invalid create CB");
UniquePersistent<Function> callback(isolate, Local<Function>::Cast(cbArg));
if (errMsg.size())
{
std::cout << "Client error: " << errMsg << std::endl;
Status status(400, errMsg);
const unsigned argc = 1;
Local<Value> argv[argc] = { status.toObject(isolate) };
Local<Function> local(Local<Function>::New(isolate, callback));
local->Call(isolate->GetCurrentContext()->Global(), argc, argv);
callback.Reset();
return;
}
const std::string name(*v8::String::Utf8Value(nameArg->ToString()));
// Store everything we'll need to perform initialization.
uv_work_t* req(new uv_work_t);
req->data = new CreateData(
obj->m_session,
name,
paths,
outerScope,
cache,
std::move(callback));
uv_queue_work(
uv_default_loop(),
req,
(uv_work_cb)([](uv_work_t *req)->void
{
CreateData* createData(static_cast<CreateData*>(req->data));
createData->safe([createData]()->void
{
if (!createData->session->initialize(
createData->name,
createData->paths,
createData->outerScope,
createData->cache))
{
createData->status.set(404, "Not found");
}
});
}),
(uv_after_work_cb)([](uv_work_t* req, int status)->void
{
Isolate* isolate(Isolate::GetCurrent());
HandleScope scope(isolate);
CreateData* createData(static_cast<CreateData*>(req->data));
const unsigned argc = 1;
Local<Value> argv[argc] = { createData->status.toObject(isolate) };
Local<Function> local(Local<Function>::New(
isolate,
createData->callback));
local->Call(isolate->GetCurrentContext()->Global(), argc, argv);
delete createData;
delete req;
})
);
}