blitzbuffers 0.3.0

Code-generation library and tool for the BlitzBuffers serialization format

⚡BlitzBuffers

BlitzBuffers is a serialization format and code generator designed for lightning-fast conversion of data to and from byte buffers by utilizing direct serialization and deserialization.

Pros

• Very fast serialization and deserialization of data (see benchmarks).
• Cross-language support via code generation based on a given schema file.
• Simple, but powerful schema syntax featuring structs, enums, tagged unions, vectors, and strings.
• Zero-copy serialization and deserialization - directly reads from and writes to the buffer.
• Easy-to-use API via the generated code.
• Code generation via Python, which makes it simple to integrate into your workflow, instead of having to deal with executables or build steps of other projects.

Cons

• Unset fields take up space in the buffer.
• No easy schema versioning.
• Not many languages supported (yet).
• No endianness checks in C++ (yet) - only use it on little-endian machines.

Schema

The schema syntax and capabilities take inspiration from the Rust language.

Expand to see an example using the various constructs.

namespace game

enum EntityType {
    Player
    Neutral
    Enemy
}

struct Position {
    x: f32
    y: f32
    z: f32
}

struct Entity {
    type: EntityType
    name: string
    hitpoints: u64
    position: Position
    traits: Trait[]
}

enum Trait {
    Height(u16, u16),

    Color {
        red: u8
        green: u8
        blue: u8
        alpha: u8
    }

}

Installation

The code-generation tool can be installed via pip:

pip3 install blitzbuffers

Code generation

Code for the desired languages can be generated by calling the module directly. You can specify one or more languages in a single command-line:

python3 -m blitzbuffers <schema-path> [-l <language> <output-file-path>]

Available languages are currently: cpp, rust

Benchmarks

A few benchmarks showing the difference between blitzbuffers and other tools/libraries with similar functionality.

C++

Deserialization/usage is the same for blitzbuffers no matter the setup.

Setup	Serialization	Deserialization/Usage (checked)	Roundtrip
Blitzbuffers (fixed)	34.8 ns	74.7 ns	125 ns
Blitzbuffers (expanding)	105 ns	74.8 ns	187 ns
Flatbuffers	433 ns	176 ns	620 ns
alpaca	218 ns	479 ns	717 ns

Rust

Deserialization/usage is the same for blitzbuffers no matter the setup. Checked vs. unchecked, is whether the data buffer is verified before the data in it is used.

Setup	Serialization	Deserialization/Usage (checked)	Deserialization/Usage (unchecked)
Blitzbuffers (fixed)	77.3 ns	181.4 ns	116.8 ns
Blitzbuffers (expanding)	141.1 ns	-	-
Blitzbuffers (raw first)	593.8 ns	-	-
Blitzbuffers (raw storage)	107.1 ns	-	-
Flatbuffers	410.8 ns	595.9 ns	129.9 ns