A gRPC client library for Firestore, intended to run on Cloud Run.
Add this to your Cargo.toml:
[dependencies]
firestore = { version = "0.1", package = "firestore_grpc_cloudrun" }cargo new firestore-rust && cd firestore-rustuse firestore::*;
use futures::try_join;
use hyper::service::{make_service_fn, service_fn};
use hyper::{Body, Request, Response, Server};
use std::convert::Infallible;
use std::net::SocketAddr;
#[tokio::main]
async fn main() {
let addr = SocketAddr::from(([0, 0, 0, 0], get_port()));
let make_svc = make_service_fn(|_conn| async {
Ok::<_, Infallible>(service_fn(root))
});
let server = Server::bind(&addr).serve(make_svc);
if let Err(e) = server.await {
eprintln!("server error: {}", e);
}
}
async fn root(_req: Request<Body>) -> Result<Response<Body>, Infallible> {
let res = if let Ok(doc) = create_document().await {
format!("Document: {:?}", doc)
} else {
"Failed to get document.".into()
};
Ok(Response::new(res.into()))
}
async fn create_document() -> Result<Document, BoxError> {
let (mut client, project_id) = try_join!(
get_client(),
get_project_id(),
)?;
let parent = format!("projects/{}/databases/(default)/documents", project_id);
let collection_id = "greetings".into();
let document_id = "".into();
let mut fields = std::collections::HashMap::new();
fields.insert(
"message".into(),
Value {
value_type: Some(value::ValueType::StringValue(
"Hello world from CloudRun!".into(),
)),
},
);
let document = Some(Document {
name: "".into(),
fields,
create_time: None,
update_time: None,
});
let res = client
.create_document(CreateDocumentRequest {
parent,
collection_id,
document_id,
document,
mask: None,
})
.await?;
Ok(res.into_inner())
}
fn get_port() -> u16 {
std::env::var("PORT")
.ok()
.and_then(|x| x.parse().ok())
.unwrap_or(8080)
}[dependencies]
firestore = { version = "*", package = "firestore_grpc_cloudrun" }
futures = "0.3"
hyper = "0.13"
tokio = { version = "0.2", features = ["full"] }FROM rust:1-stretch as build-env
WORKDIR /app
ADD . .
RUN rustup update && rustup component add rustfmt && cargo build --release
FROM debian:stretch-slim
WORKDIR /app
RUN apt-get update && apt-get install -y libgcc1 libgomp1 libstdc++6 ca-certificates && update-ca-certificates && rm -rf /var/lib/apt/lists/*
COPY --from=build-env /app/target/release/firestore-rust /app/main
ENTRYPOINT ["./main"]
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