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authorrobot-ydb-importer <robot-ydb-importer@yandex-team.com>2024-05-23 19:17:26 +0300
committerrobot-ydb-importer <robot-ydb-importer@yandex-team.com>2024-05-23 19:29:20 +0300
commit1f7aeb8c58b47d4b27e38a20a95561fd1537b539 (patch)
tree25ce0268bed9432c0043a26a58420f80bd999c16
parent07b5efe81522062bf14d695611c8efb33d20eabf (diff)
downloadydb-1f7aeb8c58b47d4b27e38a20a95561fd1537b539.tar.gz
YDB Import 600
58488ba7bf42f414ab6c282a2aee26d5e26211f5
-rw-r--r--contrib/restricted/thrift/thrift/TDispatchProcessor.h141
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diff --git a/contrib/restricted/thrift/thrift/TDispatchProcessor.h b/contrib/restricted/thrift/thrift/TDispatchProcessor.h
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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.
+ */
+#ifndef _THRIFT_TDISPATCHPROCESSOR_H_
+#define _THRIFT_TDISPATCHPROCESSOR_H_ 1
+
+#include <thrift/TProcessor.h>
+
+namespace apache {
+namespace thrift {
+
+/**
+ * TDispatchProcessor is a helper class to parse the message header then call
+ * another function to dispatch based on the function name.
+ *
+ * Subclasses must implement dispatchCall() to dispatch on the function name.
+ */
+template <class Protocol_>
+class TDispatchProcessorT : public TProcessor {
+public:
+ virtual bool process(stdcxx::shared_ptr<protocol::TProtocol> in,
+ stdcxx::shared_ptr<protocol::TProtocol> out,
+ void* connectionContext) {
+ protocol::TProtocol* inRaw = in.get();
+ protocol::TProtocol* outRaw = out.get();
+
+ // Try to dynamic cast to the template protocol type
+ Protocol_* specificIn = dynamic_cast<Protocol_*>(inRaw);
+ Protocol_* specificOut = dynamic_cast<Protocol_*>(outRaw);
+ if (specificIn && specificOut) {
+ return processFast(specificIn, specificOut, connectionContext);
+ }
+
+ // Log the fact that we have to use the slow path
+ T_GENERIC_PROTOCOL(this, inRaw, specificIn);
+ T_GENERIC_PROTOCOL(this, outRaw, specificOut);
+
+ std::string fname;
+ protocol::TMessageType mtype;
+ int32_t seqid;
+ inRaw->readMessageBegin(fname, mtype, seqid);
+
+ // If this doesn't look like a valid call, log an error and return false so
+ // that the server will close the connection.
+ //
+ // (The old generated processor code used to try to skip a T_STRUCT and
+ // continue. However, that seems unsafe.)
+ if (mtype != protocol::T_CALL && mtype != protocol::T_ONEWAY) {
+ GlobalOutput.printf("received invalid message type %d from client", mtype);
+ return false;
+ }
+
+ return this->dispatchCall(inRaw, outRaw, fname, seqid, connectionContext);
+ }
+
+protected:
+ bool processFast(Protocol_* in, Protocol_* out, void* connectionContext) {
+ std::string fname;
+ protocol::TMessageType mtype;
+ int32_t seqid;
+ in->readMessageBegin(fname, mtype, seqid);
+
+ if (mtype != protocol::T_CALL && mtype != protocol::T_ONEWAY) {
+ GlobalOutput.printf("received invalid message type %d from client", mtype);
+ return false;
+ }
+
+ return this->dispatchCallTemplated(in, out, fname, seqid, connectionContext);
+ }
+
+ /**
+ * dispatchCall() methods must be implemented by subclasses
+ */
+ virtual bool dispatchCall(apache::thrift::protocol::TProtocol* in,
+ apache::thrift::protocol::TProtocol* out,
+ const std::string& fname,
+ int32_t seqid,
+ void* callContext) = 0;
+
+ virtual bool dispatchCallTemplated(Protocol_* in,
+ Protocol_* out,
+ const std::string& fname,
+ int32_t seqid,
+ void* callContext) = 0;
+};
+
+/**
+ * Non-templatized version of TDispatchProcessor, that doesn't bother trying to
+ * perform a dynamic_cast.
+ */
+class TDispatchProcessor : public TProcessor {
+public:
+ virtual bool process(stdcxx::shared_ptr<protocol::TProtocol> in,
+ stdcxx::shared_ptr<protocol::TProtocol> out,
+ void* connectionContext) {
+ std::string fname;
+ protocol::TMessageType mtype;
+ int32_t seqid;
+ in->readMessageBegin(fname, mtype, seqid);
+
+ if (mtype != protocol::T_CALL && mtype != protocol::T_ONEWAY) {
+ GlobalOutput.printf("received invalid message type %d from client", mtype);
+ return false;
+ }
+
+ return dispatchCall(in.get(), out.get(), fname, seqid, connectionContext);
+ }
+
+protected:
+ virtual bool dispatchCall(apache::thrift::protocol::TProtocol* in,
+ apache::thrift::protocol::TProtocol* out,
+ const std::string& fname,
+ int32_t seqid,
+ void* callContext) = 0;
+};
+
+// Specialize TDispatchProcessorT for TProtocol and TDummyProtocol just to use
+// the generic TDispatchProcessor.
+template <>
+class TDispatchProcessorT<protocol::TDummyProtocol> : public TDispatchProcessor {};
+template <>
+class TDispatchProcessorT<protocol::TProtocol> : public TDispatchProcessor {};
+}
+} // apache::thrift
+
+#endif // _THRIFT_TDISPATCHPROCESSOR_H_