SMDK - Generate a SmartModule

SMDK generate helps developers build a sample SmartModule project by answering a few simple questions


Generate - Operation

SMDK generate commands runs a wizard and builds a sample project in a subdirectory

$ smdk generate my-filter 
Generating new SmartModule project: my-filter
fluvio-smartmodule-cargo-dependency => '"0.2.5"'
๐Ÿ”ง   Destination: ~/smdk/my-filter ...
๐Ÿ”ง   Generating template ...
โœ” ๐Ÿคท   Will your SmartModule use init parameters? ยท false
โœ” ๐Ÿคท   Which type of SmartModule would you like? ยท filter
โœ” ๐Ÿคท   Will your SmartModule be public? ยท false
๐Ÿคท   Please set a group name : acme
Ignoring: /var/folders/5q/jwc86771549058kmbkbqjcdc0000gn/T/.tmpwXs6cl/cargo-generate.toml
[1/5]   Done: Cargo.toml
[2/5]   Done:
[3/5]   Done: SmartModule.toml
[4/5]   Done: src/
[5/5]   Done: src
๐Ÿ”ง   Moving generated files into: `~/smdk/my-filter`...
๐Ÿ’ก   Initializing a fresh Git repository
โœจ   Done! New project created ~/smdk/my-filter
hub: hubid acme is set 

The generator created Rust project ready to compile:

$ tree 
โ”œโ”€โ”€ Cargo.toml
โ”œโ”€โ”€ SmartModule.toml
โ””โ”€โ”€ src

This is a simple SmartModule filter matching for all data records that contains letter a:

use fluvio_smartmodule::{smartmodule, Result, SmartModuleRecord};

pub fn filter(record: &SmartModuleRecord) -> Result<bool> {
    let string = std::str::from_utf8(record.value.as_ref())?;

Note the SmartModule.toml file. This file contains SmartModule parameters required to load the file in the Cluster and publish it to SmartModule Hub.

$ cat SmartModule.toml
name = "my-filter"
group = "aj"
version = "0.1.0"
apiVersion = "0.1.0"
description = ""
license = "Apache-2.0"

name = "input"
description = "input description"


  • package is used to build the SmartModule FQDN aj/my-filter@0.1.0, and the description to publish to SmartModule Hub. The group name is equivalent to the package owner in the Hub.
  • params defines the command line parameters by the SmartModule internal logic.

The project is ready to build and test. Checkout the next section for instructions.



  1. Generate a SmartModule
  2. Build and Test
  3. Load to your Cluster
  4. Publish to SmartModule Hub