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| 1 | +#[macro_use] |
| 2 | +extern crate log; |
| 3 | + |
| 4 | +use postgres::NoTls; |
| 5 | +use r2d2_postgres::{ |
| 6 | + r2d2::{self, Pool}, |
| 7 | + PostgresConnectionManager, |
| 8 | +}; |
| 9 | +use rsocket_rust::{error::RSocketError, prelude::*}; |
| 10 | +use rsocket_rust_transport_tcp::TcpServerTransport; |
| 11 | +use std::error::Error; |
| 12 | + |
| 13 | +#[tokio::main] |
| 14 | +async fn main() -> Result<(), Box<dyn Error + Send + Sync>> { |
| 15 | + env_logger::builder().format_timestamp_millis().init(); |
| 16 | + let dao = Dao::try_new().expect("Connect failed!"); |
| 17 | + RSocketFactory::receive() |
| 18 | + .acceptor(Box::new(move |_, _| { |
| 19 | + info!("accept new socket!"); |
| 20 | + Ok(Box::new(dao.clone())) |
| 21 | + })) |
| 22 | + .on_start(Box::new(|| info!("server start success!!!"))) |
| 23 | + .transport(TcpServerTransport::from("127.0.0.1:7878")) |
| 24 | + .serve() |
| 25 | + .await |
| 26 | +} |
| 27 | + |
| 28 | +#[derive(Clone, Debug)] |
| 29 | +struct Dao { |
| 30 | + pool: Pool<PostgresConnectionManager<NoTls>>, |
| 31 | +} |
| 32 | + |
| 33 | +impl RSocket for Dao { |
| 34 | + fn request_response(&self, _: Payload) -> Mono<Result<Payload, RSocketError>> { |
| 35 | + let pool = self.pool.clone(); |
| 36 | + Box::pin(async move { |
| 37 | + // TODO: something wrong here!!! |
| 38 | + let mut client = pool.get().expect("Get client from pool failed!"); |
| 39 | + let row = client |
| 40 | + .query_one("SELECT 'world' AS hello", &[]) |
| 41 | + .expect("Execute SQL failed!"); |
| 42 | + let result: String = row.get("hello"); |
| 43 | + Ok(Payload::builder().set_data_utf8(&result).build()) |
| 44 | + }) |
| 45 | + } |
| 46 | + |
| 47 | + fn metadata_push(&self, _: Payload) -> Mono<()> { |
| 48 | + unimplemented!() |
| 49 | + } |
| 50 | + |
| 51 | + fn fire_and_forget(&self, _: Payload) -> Mono<()> { |
| 52 | + unimplemented!() |
| 53 | + } |
| 54 | + |
| 55 | + fn request_stream(&self, _: Payload) -> Flux<Result<Payload, RSocketError>> { |
| 56 | + unimplemented!() |
| 57 | + } |
| 58 | + |
| 59 | + fn request_channel( |
| 60 | + &self, |
| 61 | + _: Flux<Result<Payload, RSocketError>>, |
| 62 | + ) -> Flux<Result<Payload, RSocketError>> { |
| 63 | + unimplemented!() |
| 64 | + } |
| 65 | +} |
| 66 | + |
| 67 | +impl Dao { |
| 68 | + fn try_new() -> Result<Dao, Box<dyn Error + Sync + Send>> { |
| 69 | + let manager: PostgresConnectionManager<NoTls> = PostgresConnectionManager::new( |
| 70 | + "host=localhost user=postgres password=postgres" |
| 71 | + .parse() |
| 72 | + .unwrap(), |
| 73 | + NoTls, |
| 74 | + ); |
| 75 | + let pool: Pool<PostgresConnectionManager<NoTls>> = |
| 76 | + r2d2::Pool::new(manager).expect("Create pool failed!"); |
| 77 | + info!("==> create postgres pool success!"); |
| 78 | + Ok(Dao { pool }) |
| 79 | + } |
| 80 | +} |
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