Build a stateful microservice with Dapr

Prerequisite

Install and start the MySQL database

Install and init Dapr CLI.

wget -q https://raw.githubusercontent.com/dapr/cli/master/install/install.sh -O - | /bin/bash
dapr init

Build

cd sales_tax_rate
cargo build --target wasm32-wasi --release

cd order_management
cargo build --target wasm32-wasi --release

Run

cd sales_tax_rate
dapr run --app-id rate-service --app-protocol http --app-port 8001 --dapr-http-port 3501 --components-path ../config --log-level debug wasmedge target/wasm32-wasi/release/sales_tax_rate_lookup.wasm

cd order_management
dapr run --app-id order-service --app-protocol http --app-port 8003 --dapr-http-port 3503 --components-path ../config --log-level debug wasmedge target/wasm32-wasi/release/order_management.wasm

Test

Run the following from another terminal.

$ curl http://localhost:8003/init
{"status":"true"}

$ curl http://localhost:8003/create_order -X POST -d @order.json
{
  "order_id": 0,
  "product_id": 321,
  "quantity": 2,
  "subtotal": 20.0,
  "shipping_address": "123 Main St, Anytown USA",
  "shipping_zip": "78701",
  "shipping_cost": 5.5,
  "total": 27.15
}

$ curl http://localhost:8003/orders
[{"order_id":1,"product_id":321,"quantity":2,"subtotal":20.0,"shipping_address":"123 Main St, Anytown USA","shipping_zip":"78701","shipping_cost":5.5,"total":27.15}]