[Misc] Update usage with mooncake lib for kv transfer (#16523)

Signed-off-by: Shangming Cai <caishangming@linux.alibaba.com>

vllm/distributed/kv_transfer/kv_lookup_buffer/mooncake_store.py

@@ -70,7 +70,7 @@ class MooncakeStore(KVStoreBufferBase):
     ):
 
         try:
-            from mooncake_vllm_adaptor import MooncakeDistributedStore
+            from mooncake.store import MooncakeDistributedStore
         except ImportError as e:
             raise ImportError(
                 "Please install mooncake by following the instructions at "

vllm/distributed/kv_transfer/kv_pipe/mooncake_pipe.py

@@ -57,14 +57,14 @@ class MooncakeTransferEngine:
 
     def __init__(self, kv_rank: int, local_rank: int):
         try:
-            import mooncake_vllm_adaptor as mva
+            from mooncake.engine import TransferEngine
         except ImportError as e:
             raise ImportError(
                 "Please install mooncake by following the instructions at "
                 "https://github.com/kvcache-ai/Mooncake/blob/main/doc/en/build.md "  # noqa: E501
                 "to run vLLM with MooncakeConnector.") from e
 
-        self.engine = mva.mooncake_vllm_adaptor()
+        self.engine = TransferEngine()
         self.local_rank = local_rank
 
         try:
@@ -140,12 +140,12 @@ class MooncakeTransferEngine:
                     "Mooncake Configuration error. `metadata_backend`"
                     f" should be one of {supported_backend}.")
 
-            self.engine.initializeExt(local_hostname, metadata_server,
-                                      protocol, device_name, metadata_backend)
+            self.engine.initialize_ext(local_hostname, metadata_server,
+                                       protocol, device_name, metadata_backend)
 
     def allocate_managed_buffer(self, length: int) -> int:
         """Allocate a managed buffer of the specified length."""
-        ret = self.engine.allocateManagedBuffer(length)
+        ret = self.engine.allocate_managed_buffer(length)
         if ret <= 0:
             logger.error("Allocation Return Error")
             raise Exception("Allocation Return Error")
@@ -153,13 +153,13 @@ class MooncakeTransferEngine:
 
     def free_managed_buffer(self, buffer: int, length: int) -> int:
         """Free a previously allocated managed buffer."""
-        return self.engine.freeManagedBuffer(buffer, length)
+        return self.engine.free_managed_buffer(buffer, length)
 
     def transfer_sync(self, buffer: int, peer_buffer_address: int,
                       length: int) -> int:
         """Synchronously transfer data to the specified address."""
-        ret = self.engine.transferSync(self.remote_url, buffer,
-                                       peer_buffer_address, length)
+        ret = self.engine.transfer_sync_read(self.remote_url, buffer,
+                                             peer_buffer_address, length)
         if ret < 0:
             logger.error("Transfer Return Error")
             raise Exception("Transfer Return Error")
@@ -168,11 +168,11 @@ class MooncakeTransferEngine:
     def write_bytes_to_buffer(self, buffer: int, user_data: bytes,
                               length: int) -> int:
         """Write bytes to the allocated buffer."""
-        return self.engine.writeBytesToBuffer(buffer, user_data, length)
+        return self.engine.write_bytes_to_buffer(buffer, user_data, length)
 
     def read_bytes_from_buffer(self, buffer: int, length: int) -> bytes:
         """Read bytes from the allocated buffer."""
-        return self.engine.readBytesFromBuffer(buffer, length)
+        return self.engine.read_bytes_from_buffer(buffer, length)
 
     def wait_for_ack(self, src_ptr: int, length: int) -> None:
         """Asynchronously wait for ACK from the receiver."""