Protobuf implementation in Rust.
- Written in pure rust
- Generate rust code
- Has runtime library for generated code (Coded{Input|Output}Stream impl)
There are several ways to generate rust code from .proto
files
Have a look at readme in protoc-rust crate.
Have a look at readme in protoc crate.
- Install protobuf for
protoc
binary.
On OS X Homebrew can be used:
brew install protobuf
On Ubuntu, protobuf-compiler
package can be installed:
apt-get install protobuf-compiler
Protobuf is needed only for code generation, rust-protobuf
runtime
does not use protobuf
library.
- Install
protoc-gen-rust
program (which isprotoc
plugin)
It can be installed either from source or with cargo install protobuf
command.
- Add
protoc-gen-rust
to $PATH
If you installed it with cargo, it should be
PATH="$HOME/.cargo/bin:$PATH"
- Generate .rs files:
protoc --rust_out . foo.proto
This will generate .rs files in current directory.
Have a look at generated files, used internally in rust-protobuf:
- descriptor.rs for descriptor.proto (that is part of Google protobuf)
docs.rs hosts rustdoc for protobuf.
Rust-protobuf can be used with bytes crate.
To enable Bytes
you need to:
- Enable
with-bytes
feature in rust-protobuf:
[dependencies]
protobuf = { version = "1.3", features = ["with-bytes"] }
- Enable bytes option in
.proto
file:
import "rustproto.proto";
option (rustproto.carllerche_bytes_for_bytes_all) = true;
option (rustproto.carllerche_bytes_for_string_all) = true;
With these options enabled, fields of type bytes
or string
are
generated as Bytes
or Chars
respectively. When CodedInputStream
is constructed
from Bytes
object, fields of these types get subslices of original Bytes
object,
instead of being allocated on heap.
- quick-protobuf — alternative protobuf implementation in Rust
- prost — another protobuf implementation in Rust
- serde-protobuf
- grpc-rust — implementation of gRPC based on this library
- grpc-rs — another gRPC implementation for Rust