Crate ws_sdk

A Rust SDK for writing Webassembly for W3bstream.

W3bstream is a general framework for connecting data generated in the physical world to the blockchain world. Webassembly is selected as the programming language for data processing.

At a high level, W3bstream provides several Application Binary Interfaces (ABIs) to enhance the Webassembly ability for developers:

• streaming: Reading or Writing the data in the stream
• database: Storing or accessing the data in the database
• blockchain: Writing or reading the contract on the blockchain
• logging: Logging information or errors

Guide level documentation is found on the website.

Examples

Say “Hello World!” to the w3bstream:

use ws_sdk::log::log_info;

#[no_mangle]
pub extern "C" fn start(_: i32) -> i32 {
    log_info("Hello World!");
    return 0;
}

Modules

blockchain

Interact with contracts on the blockchain in the wasm.

crypto

Wrapped cryptography library (e.g. secp256k1, secp256r1) for data encryption and decryption

database

Interact with database in the wasm.

log

Send a log from VM to the host.

metrics

Publish a metrics to Trusted Metrics Center.

stream

Interact with the source and sink of the stream.