Hydroflow

Hydro's low-level dataflow runtime.

See the Github Pages index for more documentation.

Read the Hydroflow Book.

Start with a Template Program

We provide a cargo-generate template for you to get started from a simple working example.

To install cargo-generate, run the following:

cargo install cargo-generate

Then run

cargo generate gh:hydro-project/hydroflow-template

and you will get a well-formed Hydroflow/Rust project to use as a starting point. It provides a simple Echo Server and Client, and advice for adapting it to other uses.

The Examples Container

The hydroflow/examples subdirectory of this repository includes a number of examples. To make running these examples in the cloud easier, we've created a Docker image that contains compiled versions of those examples. The image is defined in the Dockerfile in the same directory as this README.

If you want to build the examples container locally, you can run

docker build -t hydroflow-examples .

This will build an image suitable for your architecture.

The scripts/multiplatform-docker-build.sh <image name> script will build both arm64 and amd64 versions of the image and push them to the image name specified. By default, this will push the image to DockerHub; if you want to push the image to another repository, you can pass an image URL as the argument to multiplatform-docker-build.sh instead.

Example binaries are located in /usr/src/myapp.

Dev Setup

See the setup section of the book.

mdBook Setup

The Hydroflow Book is generated using mdBook. To install mdbook and dependencies:

cargo install mdbook mdbook-mermaid mdbook-linkcheck

The book can then be viewed locally with a web browser by running the following from the project root.

mdbook serve --open