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Chapter 2. Compiling Protobuf Schema

Data Grid uses the ProtoStream API to store data as Protobuf-encoded entries.

Protobuf is a language-neutral format that allows clients to create and retrieve entries in remote caches using both Hot Rod and REST endpoints.

Compile Protobuf schema, .proto files, into C++ header and source files to describe your data to Data Grid.

Prerequisites

  • Install the Protobuf library and protobuf-devel package. 

    # yum install protobuf
# yum install protobuf-devel

Procedure

  1. Set the LD_LIBRARY_PATH environment variable, if it is not already set. 

    # export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/lib64

  2. Compile Protobuf schema for the Hot Rod C++ client as required. 

    # /bin/protoc --cpp_out dllexport_decl=HR_PROTO_EXPORT:/path/to/output/ $FILE

    HR_PROTO_EXPORT is a macro that the Hot Rod C++ client expands when it compiles the Protobuf schema.

  3. Register your Protobuf schema with Data Grid if you plan to use queries.
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