Code Uploader

Description

The Code Uploader is a library that uploads a generated application to a machine and runs it with Docker Compose, reporting progress step by step. It has strategies for a local Docker, any SSH server (Debian/Ubuntu, and RPM based distros) and AWS EC2 instances.

Installation

npm install @lbdudc/gp-code-uploader

Pre-requisites

• Node.js 18+
• An OpenSSH client (ssh, scp) on the machine that deploys (SSH/AWS strategies)
• Local: Docker with the compose plugin (Docker Desktop or Docker Engine)
• SSH: a user with passwordless sudo (only needed the first time, to install Docker) and key based authentication. Password prompts are never shown: the connection fails fast instead of hanging.

Usage

import { Uploader, DebianUploadStrategy } from "@lbdudc/gp-code-uploader";

const uploader = new Uploader();
uploader.setUploadStrategy(new DebianUploadStrategy());

const { url } = await uploader.deploy(
  {
    host: "203.0.113.5",
    port: 22,
    username: "ubuntu",
    certRoute: "/home/me/.ssh/id_ed25519",
    repoPath: "./output", // generated app: must contain deploy/docker-compose.yml
    remoteRepoPath: "/home/ubuntu/app", // absolute path, wiped on every deploy
    // projectName: "my-app", // optional: compose project name (default: COMPOSE_PROJECT_NAME
    //                        // from deploy/.env, else the folder name "deploy")
  },
  {
    onEvent: (event) => console.log(event),
    // signal: abortController.signal, // cancel a running deployment
  },
);
console.log(`Deployed at ${url}`);

deploy() resolves once every service is ready: healthy when it has a healthcheck, running otherwise, or exited with code 0 for one-shot services (importers, init containers). If a service fails or does not get ready in 10 minutes the promise rejects with that service's last log lines.

Strategies

Strategy	Steps
LocalUploadStrategy	Check Docker, stop previous deployment, build & start services, wait for services
DebianUploadStrategy	Package code, connect to server, prepare server (installs Docker if missing), stop previous deployment, upload code, build & start services, wait for services
AWSUploadStrategy	Create AWS instance (skipped when host is given), then the same steps as SSH. Retries the first connection while the instance boots

Configuration

Key	Used by	Description
repoPath	all	Folder of the generated app (contains deploy/docker-compose.yml)
projectName	all	Optional compose project name (-p). Without it compose uses COMPOSE_PROJECT_NAME from deploy/.env, else the folder name. Set it when several apps share the same folder name
resetData	all	true deletes the previous deployment's volumes (down -v, i.e. the database) before starting. Default false: a redeploy keeps its data
url	all	URL returned as the result (default http://localhost / http://<host>)
host, port, username, certRoute	ssh, aws	SSH target and key
remoteRepoPath	ssh, aws	Absolute remote folder (validated: no .., spaces or quotes)
AWS_*	aws	AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION, AWS_AMI_ID, AWS_INSTANCE_TYPE, AWS_INSTANCE_NAME, AWS_SECURITY_GROUP_ID, AWS_KEY_NAME. AWS_USERNAME, AWS_SSH_PRIVATE_KEY_PATH and REMOTE_REPO_PATH are accepted as aliases of username, certRoute and remoteRepoPath

Events

onEvent receives objects like:

{ type: "step", id: "upload", label: "Upload code", status: "running", index: 5, total: 7 }
{ type: "step", id: "upload", label: "Upload code", status: "done", index: 5, total: 7, durationMs: 8123 }
{ type: "log", step: "build", line: "#12 [server 4/6] RUN ./gradlew build" }
{ type: "services", services: [{ name: "server", state: "running", health: "starting", status: "pending" }] }

status of a step is running, done, skipped or failed. A failed step also sets error.step on the rejected error. Without onEvent, progress is printed to the console.

Errors

Every failure rejects deploy(). Errors from commands are CommandErrors (command, code, stderr, tail(n)). Aborting the signal kills the running command.

Migrating from 1.x

• uploadCode(config) still works (console output, resolves to the URL); prefer deploy(config, { onEvent }).
• forceBuild is removed: the client and server are built inside Docker, so nothing is built on the machine that deploys.
• Uploader.executeCommand and the strategy hooks configureInstance / runDockerComposeUp are removed.
• docker-compose v1 is only used as a fallback; docker compose is preferred.
• Commands run without a shell and with BatchMode=yes: a key that needs a passphrase must be loaded in an ssh-agent.
• The remote folder is emptied on every deploy, and must be an absolute path at least two levels deep.

AWS Instance Pre-requisites

• An SSH key pair guide
• A security group with inbound SSH (22) and HTTP (80) guide
• IAM permissions to run instances (e.g. AmazonEC2FullAccess) and your access/secret key guide
• An instance with enough memory: the build fails on the smallest free tier instances

Development

npm test        # unit tests, no Docker/SSH needed
npm run lint

Author

Victor Lamas Email: victor.lamas@udc.es

License

This project is licensed under the MIT License - see the LICENSE file for details