ccdexplorer-schema-parser 0.1.2

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Bindings for schema parsing

These bindings require maturin and Rust installed.

We've tested with Rust 1.74.

Project structure

The Rust bindings are in src/lib.rs. They are simple exports of functionality from concordium-contracts-common.

The entrypoint for Python consumers is the ccdexplorer_schema_parser package which has a single class Schema. The constructor will instantiate the schema from a deployed Wasm module.

After that the constructed object can be used to parse events or return values using the schema in the module.

f = open('/path/to/module', 'rb').read()
schema = Schema(f)
# to convert the event which is serialized as [1,2,3] for the contract "test"
# to json
event_json = s.event_to_json("test", [1,2,2])

Alternatively to construct the schema from a Wasm module and explicit version, e.g., such as the data received from GetModuleSource grpc call

resp = stub.GetModuleSource(r)
schema = None
if resp.WhichOneof('module') == 'v0':
    schema = Schema(resp.v0.value, 0)
elif resp.WhichOneof('module') == 'v1'::
    schema = Schema(resp.v1.value, 1)

Building

Run maturin build.

This will produce a python wheel in target/wheels that will contain both the compiled Rust binaries and python wrappers. The compiled package is platform specific, so a package built on, e.g., Linux will not work on Windows.