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 = "0.5", features = ["postgres"] } sqlx = { version = "0.5", features = ["postgres", "runtime-tokio-native-tls", "uuid", "json", "chrono"] }

sqlite database

esrs = { version = "0.5", features = ["sqlite"] } sqlx = { version = "0.5", features = ["sqlite", "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

Run payments example using postgres database

cargo run --example postgres-payments

Run payments example using sqlite database

cargo run --example sqlite-payments ```

Run tests and linting.

```shell

Run tests

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

Run linting

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

Finally eventually unset DATABASE_URL environment variable.

shell unset DATABASE_URL