rust-job-queue-api-worker-system 0.1.0

A production-shaped Rust job queue: Axum API + async workers + Postgres SKIP LOCKED dequeue, retries with decorrelated jitter, idempotency, cooperative cancellation, OpenAPI, Prometheus metrics.
{
  "nbformat": 4,
  "nbformat_minor": 0,
  "metadata": {
    "colab": {
      "name": "rust_job_queue_api_worker_system_colab.ipynb",
      "provenance": []
    },
    "kernelspec": {
      "name": "python3",
      "display_name": "Python 3"
    },
    "language_info": {
      "name": "python"
    }
  },
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "# rust-job-queue-api-worker-system Colab smoke/repro notebook\n",
        "\n",
        "This notebook bootstraps the crate from a clean Colab runtime, runs non-Docker checks, starts local Postgres, runs migrations, launches the API and worker, enqueues a job, polls it to a terminal state, and fetches metrics/OpenAPI.\n",
        "\n",
        "Academic honesty note: the full integration test suite uses Docker/testcontainers. Colab runtimes do not reliably provide Docker. Docker-backed full tests and benchmarks are optional guarded cells here; GitHub Actions and a local Docker host are the canonical full-suite environments."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        "date -u\n",
        "uname -a\n",
        "lscpu | sed -n '1,25p' || true\n",
        "free -h || true\n",
        "command -v docker >/dev/null && docker version || echo 'Docker unavailable: full testcontainers tests and benches will be skipped unless Docker is installed.'"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Install system dependencies\n",
        "\n",
        "This installs Postgres for the smoke demo. It does not install Docker."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        "sudo apt-get update\n",
        "sudo apt-get install -y --no-install-recommends curl ca-certificates jq git postgresql postgresql-contrib pkg-config libssl-dev\n",
        "sudo service postgresql start\n",
        "sudo -u postgres psql -c \"ALTER USER postgres PASSWORD 'postgres';\"\n",
        "sudo -u postgres psql -tc \"SELECT 1 FROM pg_database WHERE datname = 'jobs_colab'\" | grep -q 1 || sudo -u postgres createdb jobs_colab\n",
        "psql --version"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Install Rust and clone the repo"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        "if ! command -v cargo >/dev/null; then\n",
        "  curl https://sh.rustup.rs -sSf | sh -s -- -y --profile minimal\n",
        "fi\n",
        ". \"$HOME/.cargo/env\"\n",
        "rustup toolchain install 1.88.0 --profile minimal --component rustfmt --component clippy\n",
        "rustc --version\n",
        "cargo --version\n",
        "rm -rf /content/Rust-Job-Queue-API-Worker-System\n",
        "git clone https://github.com/infinityabundance/Rust-Job-Queue-API-Worker-System.git /content/Rust-Job-Queue-API-Worker-System\n",
        "cd /content/Rust-Job-Queue-API-Worker-System\n",
        "git rev-parse --short HEAD\n",
        "cat rust-toolchain.toml"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Non-Docker checks\n",
        "\n",
        "These checks should work in Colab. They do not run the Docker/testcontainers integration suite."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        ". \"$HOME/.cargo/env\"\n",
        "cd /content/Rust-Job-Queue-API-Worker-System\n",
        "cargo fmt --all -- --check\n",
        "cargo check --locked --all-features\n",
        "cargo check --locked --no-default-features\n",
        "cargo check --locked --no-default-features --features api\n",
        "cargo check --locked --no-default-features --features worker\n",
        "cargo test --lib --all-features --locked\n",
        "cargo test --doc --all-features --locked"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## API and worker smoke demo"
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        ". \"$HOME/.cargo/env\"\n",
        "cd /content/Rust-Job-Queue-API-Worker-System\n",
        "export DATABASE_URL=postgres://postgres:postgres@127.0.0.1:5432/jobs_colab\n",
        "export RUST_LOG=info,sqlx=warn\n",
        "cargo run --locked --bin job-queue-migrate\n",
        "(cargo run --locked --bin job-queue-api > /tmp/job-queue-api.log 2>&1 & echo $! > /tmp/job-queue-api.pid)\n",
        "(WORKER_CONCURRENCY=2 WORKER_METRICS_BIND_ADDR=127.0.0.1:9091 cargo run --locked --bin job-queue-worker > /tmp/job-queue-worker.log 2>&1 & echo $! > /tmp/job-queue-worker.pid)\n",
        "for i in $(seq 1 60); do curl -fsS http://127.0.0.1:8080/health && break || sleep 1; done\n",
        "JOB_JSON=$(curl -fsS -X POST http://127.0.0.1:8080/jobs -H 'Content-Type: application/json' -H 'Idempotency-Key: colab-demo-1' -d '{\"kind\":\"send_email\",\"payload\":{\"to\":\"a@b.c\",\"subject\":\"hi\",\"body\":\"hello\"}}')\n",
        "echo \"$JOB_JSON\" | jq .\n",
        "JOB_ID=$(echo \"$JOB_JSON\" | jq -r .id)\n",
        "for i in $(seq 1 60); do\n",
        "  CUR=$(curl -fsS \"http://127.0.0.1:8080/jobs/$JOB_ID\")\n",
        "  echo \"$CUR\" | jq '{id,status,attempts,last_error}'\n",
        "  STATUS=$(echo \"$CUR\" | jq -r .status)\n",
        "  case \"$STATUS\" in succeeded|failed_permanent|cancelled) break ;; esac\n",
        "  sleep 1\n",
        "done\n",
        "curl -fsS http://127.0.0.1:8080/metrics | sed -n '1,20p'\n",
        "curl -fsS http://127.0.0.1:9091/metrics | sed -n '1,20p'\n",
        "curl -fsS http://127.0.0.1:8080/api-docs/openapi.json | jq '.paths | keys'\n",
        "kill \"$(cat /tmp/job-queue-worker.pid)\" \"$(cat /tmp/job-queue-api.pid)\" || true"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Embedded worker example\n",
        "\n",
        "This uses a fresh database so it does not race the background worker from the previous demo."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        ". \"$HOME/.cargo/env\"\n",
        "sudo -u postgres dropdb --if-exists jobs_colab_embed\n",
        "sudo -u postgres createdb jobs_colab_embed\n",
        "cd /content/Rust-Job-Queue-API-Worker-System\n",
        "DATABASE_URL=postgres://postgres:postgres@127.0.0.1:5432/jobs_colab_embed timeout 20s cargo run --locked --example embed_worker --features worker || test $? -eq 124"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Optional Docker-backed full suite\n",
        "\n",
        "Run this only when Docker is available. It is skipped on default Colab runtimes that do not expose Docker."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        ". \"$HOME/.cargo/env\"\n",
        "cd /content/Rust-Job-Queue-API-Worker-System\n",
        "if command -v docker >/dev/null && docker version >/dev/null 2>&1; then\n",
        "  cargo test --all-features --locked\n",
        "else\n",
        "  echo 'Skipping cargo test --all-features --locked: Docker unavailable.'\n",
        "fi"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
        "## Optional benchmarks\n",
        "\n",
        "Colab benchmark numbers are Colab runtime measurements. They are not reproductions of workstation results in `bench/RESULTS.md`."
      ]
    },
    {
      "cell_type": "code",
      "execution_count": null,
      "metadata": {},
      "outputs": [],
      "source": [
        "%%bash\n",
        "set -euxo pipefail\n",
        ". \"$HOME/.cargo/env\"\n",
        "cd /content/Rust-Job-Queue-API-Worker-System\n",
        "if command -v docker >/dev/null && docker version >/dev/null 2>&1; then\n",
        "  ./bench/run.sh\n",
        "else\n",
        "  echo 'Skipping benchmarks: Docker unavailable.'\n",
        "fi"
      ]
    }
  ]
}