Feat: add Docker+wasm examples (#309)

* Add a Docker+wasm sample application featuring a WasmEdge-based microservice, a MySQL database and an Nginx web server for frontend UI files. Signed-off-by: Michael Yuan <michael@secondstate.io> * Add a logo to indicate Docker+wasm compatibility. Add project descriptions to README. Signed-off-by: Michael Yuan <michael@secondstate.io> * Add the example for WasmEdge + Kafka / Redpanda + MySQL application to take messages from a queue and save into a database table. Signed-off-by: Michael Yuan <michael@secondstate.io> * Add a SVG icon to indicate Docker + Wasm req Signed-off-by: Michael Yuan <michael@michaelyuan.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update the docker compose files for the new Docker Desktop release Signed-off-by: Michael Yuan <michael@secondstate.io> * Use the correct platform to be compatible with Docker Desktop 4.15 Signed-off-by: Michael Yuan <michael@secondstate.io> * Update README.md Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-kafka-mysql/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-kafka-mysql/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-kafka-mysql/etl/Dockerfile Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Update wasmedge-mysql-nginx/README.md Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> * Change the Nginx port to the default non-privileged 8090 Signed-off-by: Michael Yuan <michael@secondstate.io> * My apologies. Need to correct the syntax for the Nginx port 8090. Signed-off-by: Michael Yuan <michael@secondstate.io> * Remove commented lines Signed-off-by: Michael Yuan <michael@secondstate.io> * Change wasi/wasm32 to wasi/wasm to conform with the latest spec Signed-off-by: Michael Yuan <michael@secondstate.io> * Update README.md Co-authored-by: Michael Irwin <mikesir87@gmail.com> Signed-off-by: Michael Yuan <michael@michaelyuan.com> Signed-off-by: Michael Yuan <michael@secondstate.io> Signed-off-by: Michael Yuan <michael@michaelyuan.com> Co-authored-by: David Karlsson <35727626+dvdksn@users.noreply.github.com> Co-authored-by: Michael Irwin <mikesir87@gmail.com>
2025-04-28 23:31:47 +02:00 · 2023-01-09 15:30:59 -06:00 · 2023-01-09 15:30:59 -06:00 · e6b1d2755f
commit e6b1d2755f
parent 6f15838d24
20 changed files with 1057 additions and 0 deletions
--- a/wasmedge-kafka-mysql/etl/src/main.rs
+++ b/wasmedge-kafka-mysql/etl/src/main.rs
@ -0,0 +1,58 @@
+use mega_etl::{async_trait, Pipe, Transformer, TransformerError, TransformerResult};
+
+use serde::{Deserialize, Serialize};
+#[derive(Serialize, Deserialize, Debug)]
+struct Order {
+    order_id: i32,
+    product_id: i32,
+    quantity: i32,
+    amount: f32,
+    shipping: f32,
+    tax: f32,
+    shipping_address: String,
+}
+
+#[async_trait]
+impl Transformer for Order {
+    async fn transform(inbound_data: &Vec<u8>) -> TransformerResult<Vec<String>> {
+        let s = std::str::from_utf8(&inbound_data)
+            .map_err(|e| TransformerError::Custom(e.to_string()))?;
+        let order: Order = serde_json::from_str(String::from(s).as_str())
+            .map_err(|e| TransformerError::Custom(e.to_string()))?;
+        log::info!("{:?}", &order);
+        let mut ret = vec![];
+        let sql_string = format!(
+            r"INSERT INTO orders VALUES ({:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {:?}, CURRENT_TIMESTAMP);",
+            order.order_id,
+            order.product_id,
+            order.quantity,
+            order.amount,
+            order.shipping,
+            order.tax,
+            order.shipping_address,
+        );
+        dbg!(sql_string.clone());
+        ret.push(sql_string);
+        Ok(ret)
+    }
+
+    async fn init() -> TransformerResult<String> {
+        Ok(String::from(
+            r"CREATE TABLE IF NOT EXISTS orders (order_id INT, product_id INT, quantity INT, amount FLOAT, shipping FLOAT, tax FLOAT, shipping_address VARCHAR(50), date_registered TIMESTAMP DEFAULT CURRENT_TIMESTAMP);",
+        ))
+    }
+}
+
+#[tokio::main(flavor = "current_thread")]
+async fn main() -> anyhow::Result<()> {
+    env_logger::init();
+
+    // can use builder later
+    let database_uri = std::env::var("DATABASE_URL")?;
+    let kafka_uri = std::env::var("KAFKA_URL")?;
+    let mut pipe = Pipe::new(database_uri, kafka_uri).await;
+
+    // This is async because this calls the async transform() function in Order
+    pipe.start::<Order>().await?;
+    Ok(())
+}