@waves/protobuf-serialization
v1.5.2
Published
Generated types and methods for encoding and decoding protobuf messages as well as working with gRPC services.
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About
Waves protobuf schemas repository
How to use
Java
Add dependency to your pom.xml
<dependency>
<groupId>com.wavesplatform</groupId>
<artifactId>protobuf-schemas</artifactId>
<version>{version}</version>
</dependency>
ScalaPB
- Add dependency to your
build.sbt
:
libraryDependencies += "com.wavesplatform" % "protobuf-schemas" % "{version}" % "protobuf-src" intransitive()
- Configure ScalaPB to compile external schemas with:
inConfig(Compile)(Seq(
PB.protoSources in Compile := Seq(PB.externalIncludePath.value),
includeFilter in PB.generate := new SimpleFileFilter((f: File) => f.getName.endsWith(".proto") && f.getParent.endsWith("waves")),
PB.targets += scalapb.gen(flatPackage = true) -> sourceManaged.value
))
- If you use SNAPSHOT version, add this line
resolvers += Resolver.sonatypeRepo("snapshots")
See ScalaPB docs for more info.
JavaScript
Npm package: @waves/protobuf-serialization
.
It contains generated JavaScript classes, TypeScript definitions as well as raw proto files. The default build uses CommonJS and includes all of the proto files. We used pbjs
to build JavaScript and pbts
to build TypeScript definitions.
You could also make your own custom build from raw .proto
files, for example, if you want to use only a subset of proto schemas or gRPC services. They can be found in @waves/protobuf-serialization/proto
directory.
long.js
is used for 64-bit integers: int64
, uint64
, etc.
Example:
npm install --save @waves/protobuf-serialization
- Default build usage
import { waves } from '@waves/protobuf-serialization';
const block = new waves.Block();
block.header = // ... set necessary fields
const buffer = waves.Block.encode(block);
const blockDecoded = waves.Block.decode(buffer);
C#
- Add
App.config
,packages.config
to your C# solution - Add
<ItemGroup>
<Protobuf Include="proto\waves\*.proto" OutputDir="waves\%(RelativePath)" GrpcServices="None" />
<Protobuf Include="proto\waves\events\*.proto" OutputDir="waves\events\%(RelativePath)" GrpcServices="None" />
<Protobuf Include="proto\waves\node\grpc\*.proto" OutputDir="waves\node\grpc\%(RelativePath)" GrpcServices="Both" />
</ItemGroup>
to your .csproj
file. After this just build your project.
or as alternative you can use util protoc, for example:
protoc --csharp_out=RelativePath --proto_path=RelativePathToProtoDir RelativePathToProtoFile
Also there is a NuGet package WavesPlatform.ProtobufSchema with this project.
Rust
Add dependency to your Cargo.toml
[dependencies]
waves-protobuf-schemas = { git = "https://github.com/wavesplatform/protobuf-schemas" }
How to generate sources locally
Java
Use mvn package
to create JAR artifacts:
protobuf-schemas-{version}-protobuf-src.jar
- raw .proto filesprotobuf-schemas-{version}.jar
- protoc-generated Java classes
Python
Generating python sources requires python 3 or later. Run the following commands from the root of this repository to generate python sources in /target/python
:
python3 -m venv .venv
. .venv/bin/activate
pip install grpcio grpcio-tools base58
git clone https://github.com/wavesplatform/protobuf-schemas.git
python -m grpc_tools.protoc --proto_path=./protobuf-schemas/proto --python_out=. --grpc_python_out=. `find ./protobuf-schemas/proto -type f`
Tweak --python_out
and --grpc_python_out
parameters to generate files elsewhere. Target path should likely be absolute. Now you can use generated classes:
import grpc
from waves.events.grpc.blockchain_updates_pb2_grpc import BlockchainUpdatesApiStub
from waves.events.grpc.blockchain_updates_pb2 import SubscribeRequest
from base58 import b58encode, b58decode
def asset_id(asset_id_bytes):
return len(asset_id_bytes) > 0 and b58encode(asset_id_bytes) or 'WAVES'
def print_update(update):
update_id = b58encode(update.id)
print(f'block {update_id}:')
for (tx_id, tx_state_update) in zip(update.append.transaction_ids, update.append.transaction_state_updates):
print(f' tx {b58encode(tx_id)}:')
for balance in tx_state_update.balances:
print(f' {b58encode(balance.address)}: {balance.amount_before} -> {balance.amount_after.amount} [{asset_id(balance.amount_after.asset_id)}]')
with grpc.insecure_channel('grpc.wavesnodes.com:6881') as channel:
for block in BlockchainUpdatesApiStub(channel).Subscribe(SubscribeRequest(from_height=3135450, to_height=3135470)):
print_update(block.update)