12 releases (4 breaking)
0.5.1 | Jun 27, 2023 |
---|---|
0.5.0 | Jun 27, 2023 |
0.4.0 | Jun 10, 2023 |
0.3.2 | May 1, 2023 |
0.1.2 | Apr 19, 2023 |
#930 in Web programming
193 downloads per month
22KB
482 lines
PlanetScale Serverless Driver for Rust™
Rust "version" of database-js. As stated in database-js it uses PlanetScale HTTP api for database queries. It will perfectly run on Cloudflare Workers Or Vercel Edge Functions.
Usage
cargo add planetscale-driver
# also "cargo add anyhow"
Then proceed like in examples!
Examples
Connection and simple SQL execution
use planetscale_driver::PSConnection;
let conn = PSConnection::new(
"<host>",
"<user>",
"<password>",
);
let res = conn.execute("SELECT 1").await.unwrap();
fetch_one/fetch_all/fetch_scalar
As you can see, deserialization doesn't use field names (MAYBE IN FUTURE) so remember to write your structs correctly!
use planetscale_driver::{Database, query};
#[derive(Database, Debug)]
struct TestD {
val: u32
}
// ...
let res: TestD = query("SELECT 1").fetch_one(&conn).await?;
println!("{:?}", res);
let res: Vec<TestD> = query("SELECT val FROM testds").fetch_all(&conn).await?;
println!("{:?}", res);
let res: bool = query("SELECT true").fetch_scalar(&conn).await?;
println!("{:?}", res);
QueryBuilder
If you want to bind safely values into your query, you should use QueryBuilder
Note: now query method is wrapper around QueryBuilder
// ...
// note: values passed to .bind function must have trait ToString
let id = 69;
let name = "420";
// res there will be empty result, if you want to get reponse data use "execute_raw"
let res = query("INSERT INTO test(id, name) VALUES($0, \"$1\")")
.bind(id)
.bind(name)
.execute(&conn)
.await?;
Json
use planetscale_driver::{Database, DatabaseJSON, query};
#[derive(Database, Debug)]
pub struct TestD {
pub val: u32,
pub test: TestJSON,
}
#[derive(DatabaseJSON, serde::Deserialize, serde::Serialize, Debug)]
pub struct TestJSON {
pub text: String,
pub test: u32,
}
// ...
let json: TestJSON = TestJSON {
text: "test1234321".to_string(),
test: 1234,
};
let res: TestD = query("SELECT 1010, '$0'").bind(json).fetch_one(&conn).await?;
println!("{:?}", res);
Transactions
// ...
conn.transaction(|conn| async move {
conn.execute("QUERY")
.await?;
conn.execute("OTHER QUERY")
.await?;
// ^- use question mark to propagate errors "up"
// it's required if you want to rollback changes after error
Ok(())
}).await?;
Features
This crate uses reqwest for making http requests. By default, this crate will use the default-tls
feature of reqwest
which may not build in your environment (e.g. netlify serverless functions). You can override this by disabling the default features of this crate and enabling a different reqwest tls feature like so:
planetscale-driver = {version="0.5.0", default-features=false}
reqwest= {version= "0.11.17", default-features=false, features=["rustls-tls"]}
Warning If you simply disable default features and do not enable a different tls feature, reqwest will panic at runtime.
More examples in the examples folder
If you want to run them:
PS_HOST=<host> PS_USER=<username> PS_PASS=<pscale_password> cargo run --example <example_name>
Dependencies
~6–20MB
~301K SLoC