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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
#include <stdlib.h>
#include <arrow-glib/arrow-glib.h>
#ifdef G_OS_UNIX
# include <glib-unix.h>
# include <signal.h>
#endif
static void
service_event(GSocketListener *listener,
GSocketListenerEvent event,
GSocket *socket,
gpointer user_data)
{
if (event != G_SOCKET_LISTENER_BOUND) {
return;
}
GError *error = NULL;
GSocketAddress *local_address = g_socket_get_local_address(socket, &error);
if (!local_address) {
g_print("failed to get local address: %s\n", error->message);
g_error_free(error);
g_object_unref(socket);
return;
}
gchar *local_address_string =
g_socket_connectable_to_string(G_SOCKET_CONNECTABLE(local_address));
g_print("address: %s\n", local_address_string);
g_free(local_address_string);
g_object_unref(local_address);
}
static void
print_array(GArrowArray *array)
{
GArrowType value_type;
gint64 i, n;
value_type = garrow_array_get_value_type(array);
g_print("[");
n = garrow_array_get_length(array);
#define ARRAY_CASE(type, Type, TYPE, format) \
case GARROW_TYPE_##TYPE: \
{ \
GArrow##Type##Array *real_array; \
real_array = GARROW_##TYPE##_ARRAY(array); \
for (i = 0; i < n; i++) { \
if (i > 0) { \
g_print(", "); \
} \
g_print(format, garrow_##type##_array_get_value(real_array, i)); \
} \
} \
break
switch (value_type) {
ARRAY_CASE(uint8, UInt8, UINT8, "%hhu");
ARRAY_CASE(uint16, UInt16, UINT16, "%" G_GUINT16_FORMAT);
ARRAY_CASE(uint32, UInt32, UINT32, "%" G_GUINT32_FORMAT);
ARRAY_CASE(uint64, UInt64, UINT64, "%" G_GUINT64_FORMAT);
ARRAY_CASE(int8, Int8, INT8, "%hhd");
ARRAY_CASE(int16, Int16, INT16, "%" G_GINT16_FORMAT);
ARRAY_CASE(int32, Int32, INT32, "%" G_GINT32_FORMAT);
ARRAY_CASE(int64, Int64, INT64, "%" G_GINT64_FORMAT);
ARRAY_CASE(float, Float, FLOAT, "%g");
ARRAY_CASE(double, Double, DOUBLE, "%g");
default:
break;
}
#undef ARRAY_CASE
g_print("]\n");
}
static void
print_record_batch(GArrowRecordBatch *record_batch)
{
guint nth_column, n_columns;
n_columns = garrow_record_batch_get_n_columns(record_batch);
for (nth_column = 0; nth_column < n_columns; nth_column++) {
GArrowArray *array;
g_print("columns[%u](%s): ",
nth_column,
garrow_record_batch_get_column_name(record_batch, nth_column));
array = garrow_record_batch_get_column_data(record_batch, nth_column);
print_array(array);
g_object_unref(array);
}
}
static gboolean
service_incoming(GSocketService *service,
GSocketConnection *connection,
GObject *source_object,
gpointer user_data)
{
GArrowGIOInputStream *input =
garrow_gio_input_stream_new(g_io_stream_get_input_stream(G_IO_STREAM(connection)));
GError *error = NULL;
GArrowRecordBatchStreamReader *reader =
garrow_record_batch_stream_reader_new(GARROW_INPUT_STREAM(input), &error);
if (!reader) {
g_print("failed to create reader: %s\n", error->message);
g_error_free(error);
g_object_unref(input);
return FALSE;
}
while (TRUE) {
GArrowRecordBatch *record_batch =
garrow_record_batch_reader_read_next(GARROW_RECORD_BATCH_READER(reader), &error);
if (error) {
g_print("failed to read the next record batch: %s\n", error->message);
g_error_free(error);
g_object_unref(reader);
g_object_unref(input);
return EXIT_FAILURE;
}
if (!record_batch) {
break;
}
print_record_batch(record_batch);
g_object_unref(record_batch);
}
g_object_unref(reader);
g_object_unref(input);
return FALSE;
}
#ifdef G_OS_UNIX
typedef struct
{
GSocketService *service;
GMainLoop *loop;
} StopData;
static gboolean
stop(gpointer user_data)
{
StopData *data = user_data;
g_object_unref(data->service);
g_main_loop_quit(data->loop);
return G_SOURCE_REMOVE;
}
#endif
int
main(int argc, char **argv)
{
GSocketService *service = g_threaded_socket_service_new(-1);
g_signal_connect(service, "event", G_CALLBACK(service_event), NULL);
g_signal_connect(service, "incoming", G_CALLBACK(service_incoming), NULL);
GError *error = NULL;
gboolean success =
g_socket_listener_add_any_inet_port(G_SOCKET_LISTENER(service), NULL, &error);
if (!success) {
g_print("failed to add a listen IP address: %s\n", error->message);
g_error_free(error);
return EXIT_FAILURE;
}
g_socket_service_start(service);
GMainLoop *loop = g_main_loop_new(NULL, FALSE);
#ifdef G_OS_UNIX
StopData data;
data.service = service;
data.loop = loop;
g_unix_signal_add(SIGINT, stop, &data);
g_unix_signal_add(SIGTERM, stop, &data);
#else
/* TODO: Implement graceful stop. */
#endif
g_main_loop_run(loop);
g_main_loop_unref(loop);
return EXIT_SUCCESS;
}
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