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propagate callback error

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This commit is contained in:
Philipp Moritz
2016-09-04 13:08:34 -07:00
parent c4c33bd087
commit a428806788
4 changed files with 38 additions and 33 deletions
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python/src/pynumbuf/adapters/python.cc
+23 -28
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@@ -11,56 +11,49 @@ extern PyObject* numbuf_deserialize_callback;
namespace numbuf {
PyObject* get_value(ArrayPtr arr, int32_t index, int32_t type, PyObject* base) {
PyObject* result;
Status get_value(ArrayPtr arr, int32_t index, int32_t type, PyObject* base, PyObject** result) {
switch (arr->type()->type) {
case Type::BOOL:
return PyBool_FromLong(std::static_pointer_cast<BooleanArray>(arr)->Value(index));
*result = PyBool_FromLong(std::static_pointer_cast<BooleanArray>(arr)->Value(index));
return Status::OK();
case Type::INT64:
return PyInt_FromLong(std::static_pointer_cast<Int64Array>(arr)->Value(index));
*result = PyInt_FromLong(std::static_pointer_cast<Int64Array>(arr)->Value(index));
return Status::OK();
case Type::BINARY: {
int32_t nchars;
const uint8_t* str = std::static_pointer_cast<BinaryArray>(arr)->GetValue(index, &nchars);
return PyString_FromStringAndSize(reinterpret_cast<const char*>(str), nchars);
*result = PyString_FromStringAndSize(reinterpret_cast<const char*>(str), nchars);
return Status::OK();
}
case Type::STRING: {
int32_t nchars;
const uint8_t* str = std::static_pointer_cast<StringArray>(arr)->GetValue(index, &nchars);
return PyUnicode_FromStringAndSize(reinterpret_cast<const char*>(str), nchars);
*result = PyUnicode_FromStringAndSize(reinterpret_cast<const char*>(str), nchars);
return Status::OK();
}
case Type::FLOAT:
return PyFloat_FromDouble(std::static_pointer_cast<FloatArray>(arr)->Value(index));
*result = PyFloat_FromDouble(std::static_pointer_cast<FloatArray>(arr)->Value(index));
return Status::OK();
case Type::DOUBLE:
return PyFloat_FromDouble(std::static_pointer_cast<DoubleArray>(arr)->Value(index));
*result = PyFloat_FromDouble(std::static_pointer_cast<DoubleArray>(arr)->Value(index));
return Status::OK();
case Type::STRUCT: {
auto s = std::static_pointer_cast<StructArray>(arr);
auto l = std::static_pointer_cast<ListArray>(s->field(0));
if (s->type()->child(0)->name == "list") {
ARROW_CHECK_OK(DeserializeList(l->values(), l->value_offset(index), l->value_offset(index+1), base, &result));
return DeserializeList(l->values(), l->value_offset(index), l->value_offset(index+1), base, result);
} else if (s->type()->child(0)->name == "tuple") {
ARROW_CHECK_OK(DeserializeTuple(l->values(), l->value_offset(index), l->value_offset(index+1), base, &result));
return DeserializeTuple(l->values(), l->value_offset(index), l->value_offset(index+1), base, result);
} else if (s->type()->child(0)->name == "dict") {
ARROW_CHECK_OK(DeserializeDict(l->values(), l->value_offset(index), l->value_offset(index+1), base, &result));
return DeserializeDict(l->values(), l->value_offset(index), l->value_offset(index+1), base, result);
} else {
ARROW_CHECK_OK(DeserializeArray(arr, index, base, &result));
return DeserializeArray(arr, index, base, result);
}
return result;
}
default:
DCHECK(false) << "union tag not recognized " << type;
}
return NULL;
}
Status python_error_to_status() {
PyObject *type, *value, *traceback;
PyErr_Fetch(&type, &value, &traceback);
char *err_message = PyString_AsString(value);
std::stringstream ss;
if (err_message) {
ss << "Python error in callback: " << err_message;
}
return Status::NotImplemented(ss.str());
return Status::OK();
}
Status append(PyObject* elem, SequenceBuilder& builder,
@@ -123,7 +116,7 @@ Status append(PyObject* elem, SequenceBuilder& builder,
PyObject* result = PyObject_CallObject(numbuf_serialize_callback, arglist);
if (!result) {
Py_XDECREF(arglist);
return python_error_to_status();
return Status::NotImplemented("python error"); // TODO(pcm): https://github.com/pcmoritz/numbuf/issues/10
}
builder.AppendDict(PyDict_Size(result));
subdicts.push_back(result);
@@ -181,7 +174,9 @@ Status SerializeSequences(std::vector<PyObject*> sequences, std::shared_ptr<Arra
int32_t offset = offsets->Value(i); \
int8_t type = types->Value(i); \
ArrayPtr arr = data->child(type); \
SET_ITEM(result, i-start_idx, get_value(arr, offset, type, base)); \
PyObject* value; \
RETURN_NOT_OK(get_value(arr, offset, type, base, &value)); \
SET_ITEM(result, i-start_idx, value); \
} \
} \
*out = result; \
@@ -245,7 +240,7 @@ Status DeserializeDict(std::shared_ptr<Array> array, int32_t start_idx, int32_t
result = PyObject_CallObject(numbuf_deserialize_callback, arglist);
if (!result) {
Py_XDECREF(arglist);
return python_error_to_status();
return Status::NotImplemented("python error"); // TODO(pcm): https://github.com/pcmoritz/numbuf/issues/10
}
Py_XDECREF(arglist);
}