Event sourcing.rs

It is an opinionated library used to achieve cqrs/es in Rust.

A complete example can be found in the example folder.

Install

Event Sourcing RS uses under the hood [sqlx].

```toml

Cargo.toml

[dependencies]

postgres database

esrs = { version = "0.6", features = ["postgres"] } sqlx = { version = "0.6", features = ["postgres", "runtime-tokio-native-tls", "uuid", "json", "chrono"] } ```

Run examples, tests and linting

Payment examples simulate paying with credit card goods or services updating bank account (so its balance).

To run examples and tests first you need to start new postgres instance. You'll not be able to run postgres example and tests otherwise.

shell docker run -p 5432:5432 --name postgres -e POSTGRES_PASSWORD=postgres -d postgres:11-alpine

Export DATABASE_URL environment variable with freshly new created database.

shell export DATABASE_URL=postgres://postgres:postgres@localhost:5432/postgres

Run examples.

shell cargo make example aggregate_merging && cargo make example customize_persistence_flow && cargo make example delete_aggregate && cargo make example rebuild_shared_projection && cargo make example rebuilder && cargo make example simple_projection && cargo make example simple_saga && cargo make example simple_side_effect

Run tests and linting.

```shell

Run tests

cargo test --all-targets --all-features

Run linting

cargo clippy --all-targets --all-features -- -W clippy::nursery ```

Finally eventually unset DATABASE_URL environment variable.

shell unset DATABASE_URL