1 files changed, 99 insertions, 0 deletions
diff --git a/src/arrow/cpp/src/plasma/plasma.cc b/src/arrow/cpp/src/plasma/plasma.cc
new file mode 100644
index 000000000..6f38951fb
--- /dev/null
+++ b/src/arrow/cpp/src/plasma/plasma.cc
@@ -0,0 +1,99 @@
+// 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 "plasma/plasma.h"
+
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "plasma/common.h"
+#include "plasma/common_generated.h"
+#include "plasma/protocol.h"
+
+namespace fb = plasma::flatbuf;
+
+namespace plasma {
+
+ObjectTableEntry::ObjectTableEntry() : pointer(nullptr), ref_count(0) {}
+
+ObjectTableEntry::~ObjectTableEntry() { pointer = nullptr; }
+
+int WarnIfSigpipe(int status, int client_sock) {
+  if (status >= 0) {
+    return 0;
+  }
+  if (errno == EPIPE || errno == EBADF || errno == ECONNRESET) {
+    ARROW_LOG(WARNING) << "Received SIGPIPE, BAD FILE DESCRIPTOR, or ECONNRESET when "
+                          "sending a message to client on fd "
+                       << client_sock
+                       << ". The client on the other end may "
+                          "have hung up.";
+    return errno;
+  }
+  ARROW_LOG(FATAL) << "Failed to write message to client on fd " << client_sock << ".";
+  return -1;  // This is never reached.
+}
+
+/**
+ * This will create a new ObjectInfo buffer. The first sizeof(int64_t) bytes
+ * of this buffer are the length of the remaining message and the
+ * remaining message is a serialized version of the object info.
+ *
+ * \param object_info The object info to be serialized
+ * \return The object info buffer. It is the caller's responsibility to free
+ *         this buffer with "delete" after it has been used.
+ */
+std::unique_ptr<uint8_t[]> CreateObjectInfoBuffer(fb::ObjectInfoT* object_info) {
+  flatbuffers::FlatBufferBuilder fbb;
+  auto message = fb::CreateObjectInfo(fbb, object_info);
+  fbb.Finish(message);
+  auto notification =
+      std::unique_ptr<uint8_t[]>(new uint8_t[sizeof(int64_t) + fbb.GetSize()]);
+  *(reinterpret_cast<int64_t*>(notification.get())) = fbb.GetSize();
+  memcpy(notification.get() + sizeof(int64_t), fbb.GetBufferPointer(), fbb.GetSize());
+  return notification;
+}
+
+std::unique_ptr<uint8_t[]> CreatePlasmaNotificationBuffer(
+    std::vector<fb::ObjectInfoT>& object_info) {
+  flatbuffers::FlatBufferBuilder fbb;
+  std::vector<flatbuffers::Offset<plasma::flatbuf::ObjectInfo>> info;
+  for (size_t i = 0; i < object_info.size(); ++i) {
+    info.push_back(fb::CreateObjectInfo(fbb, &object_info[i]));
+  }
+
+  auto info_array = fbb.CreateVector(info);
+  auto message = fb::CreatePlasmaNotification(fbb, info_array);
+  fbb.Finish(message);
+  auto notification =
+      std::unique_ptr<uint8_t[]>(new uint8_t[sizeof(int64_t) + fbb.GetSize()]);
+  *(reinterpret_cast<int64_t*>(notification.get())) = fbb.GetSize();
+  memcpy(notification.get() + sizeof(int64_t), fbb.GetBufferPointer(), fbb.GetSize());
+  return notification;
+}
+
+ObjectTableEntry* GetObjectTableEntry(PlasmaStoreInfo* store_info,
+                                      const ObjectID& object_id) {
+  auto it = store_info->objects.find(object_id);
+  if (it == store_info->objects.end()) {
+    return NULL;
+  }
+  return it->second.get();
+}
+
+}  // namespace plasma