golem-add-ignite-rust

Apps & Automation

Using golem:rdbms/ignite2 from a Rust Golem agent. Use when the user asks to connect to Apache Ignite 2, run SQL over Ignite, or use Ignite from Rust agent code.

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I want to install this Agent Skill for this project in Codex.

Source SKILL.md: https://github.com/golemcloud/golem/blob/HEAD/golem-skills/skills/rust/golem-add-ignite-rust/SKILL.md

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Using Apache Ignite from a Rust Agent

golem-rust already exposes the host bindings for golem:rdbms/ignite2@1.5.0, so you do not need an extra crate.

Imports

use golem_rust::bindings::golem::rdbms::ignite2::{
    DbConnection,
    DbValue,
};

Open a Connection

Ignite uses thin-client URLs like ignite://host:10800.

let conn = DbConnection::open("ignite://127.0.0.1:10800")
    .map_err(|err| format!("{err:?}"))?;

If the user asks for a method that returns a plain String, keep the public method signature as String and handle host errors inside the method with expect(...) or panic!(...) rather than changing the signature to Result<String, _>.

Query Data

Ignite placeholders use ?.

let result = conn
    .query(
        "SELECT ?",
        vec![DbValue::DbString("hello".to_string())],
    )
    .map_err(|err| format!("{err:?}"))?;

let row = result.rows.first().ok_or("query returned no rows")?;
let value = row.values.first().ok_or("query returned no columns")?;

let message = match value {
    DbValue::DbString(value) => value.clone(),
    other => return Err(format!("unexpected Ignite value: {other:?}")),
};

Execute Statements

conn.execute(
    r#"CREATE TABLE IF NOT EXISTS notes (
           id INT PRIMARY KEY,
           body VARCHAR
       ) WITH "CACHE_NAME=notes""#,
    vec![],
)
.map_err(|err| format!("{err:?}"))?;

When creating Ignite tables through SQL, include WITH "CACHE_NAME=...".

Transactions

let tx = conn.begin_transaction().map_err(|err| format!("{err:?}"))?;

tx.execute(
    "INSERT INTO notes (id, body) VALUES (?, ?)",
    vec![DbValue::DbInt(1), DbValue::DbString("hello".to_string())],
)
.map_err(|err| format!("{err:?}"))?;

tx.commit().map_err(|err| format!("{err:?}"))?;

If you need transactional tables, create them with ATOMICITY=TRANSACTIONAL in the table options.