commit b3960500efff4fbe213e8c7dba455145b6c72008 Author: radex Date: Wed Jan 31 20:03:18 2024 +0100 Initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..c6bba59 --- /dev/null +++ b/.gitignore @@ -0,0 +1,130 @@ +# Logs +logs +*.log +npm-debug.log* +yarn-debug.log* +yarn-error.log* +lerna-debug.log* +.pnpm-debug.log* + +# Diagnostic reports (https://nodejs.org/api/report.html) +report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json + +# Runtime data +pids +*.pid +*.seed +*.pid.lock + +# Directory for instrumented libs generated by jscoverage/JSCover +lib-cov + +# Coverage directory used by tools like istanbul +coverage +*.lcov + +# nyc test coverage +.nyc_output + +# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files) +.grunt + +# Bower dependency directory (https://bower.io/) +bower_components + +# node-waf configuration +.lock-wscript + +# Compiled binary addons (https://nodejs.org/api/addons.html) +build/Release + +# Dependency directories +node_modules/ +jspm_packages/ + +# Snowpack dependency directory (https://snowpack.dev/) +web_modules/ + +# TypeScript cache +*.tsbuildinfo + +# Optional npm cache directory +.npm + +# Optional eslint cache +.eslintcache + +# Optional stylelint cache +.stylelintcache + +# Microbundle cache +.rpt2_cache/ +.rts2_cache_cjs/ +.rts2_cache_es/ +.rts2_cache_umd/ + +# Optional REPL history +.node_repl_history + +# Output of 'npm pack' +*.tgz + +# Yarn Integrity file +.yarn-integrity + +# dotenv environment variable files +.env +.env.development.local +.env.test.local +.env.production.local +.env.local + +# parcel-bundler cache (https://parceljs.org/) +.cache +.parcel-cache + +# Next.js build output +.next +out + +# Nuxt.js build / generate output +.nuxt +dist + +# Gatsby files +.cache/ +# Comment in the public line in if your project uses Gatsby and not Next.js +# https://nextjs.org/blog/next-9-1#public-directory-support +# public + +# vuepress build output +.vuepress/dist + +# vuepress v2.x temp and cache directory +.temp +.cache + +# Docusaurus cache and generated files +.docusaurus + +# Serverless directories +.serverless/ + +# FuseBox cache +.fusebox/ + +# DynamoDB Local files +.dynamodb/ + +# TernJS port file +.tern-port + +# Stores VSCode versions used for testing VSCode extensions +.vscode-test + +# yarn v2 +.yarn/cache +.yarn/unplugged +.yarn/build-state.yml +.yarn/install-state.gz +.pnp.* diff --git a/README.md b/README.md new file mode 100644 index 0000000..3d1e683 --- /dev/null +++ b/README.md @@ -0,0 +1,25 @@ +# Printservant + +HTTP to IPP proxy, a.k.a.HSWAW Rube Goldberg printing microservice. + +## Usage + +TODO: This API is not stable, and is subject to change. Parameters will be added to specify printer kind, and some job attributes (like copy count, orientation, size...) + +``` +POST /api/1/print - Print a document + - body: PDF + - response: 200 OK if sent successfully (does not check if print *actually* succeeded, just that adding it to the print queue was successful), 400 or 500 in case of errors + +Debug routes: + +GET /api/1/printer/attributes - Prints IPP attributes +GET /api/1/printer/jobs - Lists IPP jobs +GET /api/1/health - Just says 200 OK +``` + +## Quick start + +``` +PRINTSERVANT_PORT=3199 PRINTSERVANT_IPP_PRINTER_URL="ipp://printmaster.local:631/printers/DYMO_LabelWriter450" node index.js +``` diff --git a/index.js b/index.js new file mode 100644 index 0000000..cb45149 --- /dev/null +++ b/index.js @@ -0,0 +1,87 @@ +const ipp = require('ipp') +const express = require('express') +const bodyParser = require('body-parser') + +// TODO: +// - multiple printers +// - take printer name, other params by query string +const PORT = Number(process.env.PRINTSERVANT_PORT) || 3199 +const PRINTER_URL = process.env.PRINTSERVANT_IPP_PRINTER_URL + +if (!(PORT && PRINTER_URL)) { + console.error("PRINTSERVANT_PORT and PRINTSERVANT_IPP_PRINTER_URL environment variables must be set") + process.exit(1) +} + +const app = express() +const printer = ipp.Printer(PRINTER_URL) + +app.get('/', (req, res) => { + res.send('Hello World! I am printservant.') +}) + +app.get('/api/1/health', (req, res) => { + res.send("I'm cool, I think. I'm not sure. Thanks for asking though.") +}) + +function executeSimpleCommand(command, res) { + printer.execute(command, null, function(error, result){ + if (error) { + console.log(error); + res.status(500) + } else if (result.statusCode !== 'successful-ok') { + res.status(500) + } + + res.send({ result, error }) + }); +} + +app.get('/api/1/printer/attributes', (req, res) => { + console.log('Getting printer attributes') + executeSimpleCommand("Get-Printer-Attributes", res) +}) + +app.get('/api/1/printer/jobs', (req, res) => { + console.log('Getting printer jobs') + executeSimpleCommand("Get-Jobs", res) +}) + +app.post('/api/1/print', bodyParser.raw({ type: '*/*' }), (req, res) => { + const { body, query } = req + + console.log("Received print job: ", { body, query }) + + if (!body || !body.length) { + res.status(400).send("No data received, please send a PDF") + return + } + + const msg = { + "operation-attributes-tag": { + "document-format": "application/pdf", + }, + "job-attributes-tag": { + // FIXME: This should work, but does not + // "copies": 2, + }, + data: body + }; + console.log("Sending print job: ", msg) + + printer.execute("Print-Job", msg, function(error, result){ + console.log({ result, error }); + + if (error) { + res.status(500) + } else if (result.statusCode !== 'successful-ok') { + res.status(400) // not sure, depends lol + } + + res.send({ result, error }) + }); +}) + +app.listen(PORT, () => { + console.log(`printservant listening on port ${PORT}`) +}) diff --git a/package-lock.json b/package-lock.json new file mode 100644 index 0000000..de959d6 --- /dev/null +++ b/package-lock.json @@ -0,0 +1,705 @@ +{ + "name": "y", + "version": "0.0.1", + "lockfileVersion": 3, + "requires": true, + "packages": { + "": { + "name": "y", + "version": "0.0.1", + "license": "ISC", + "dependencies": { + "body-parser": "^1.20.2", + "express": "^4.18.2", + "ipp": "^2.0.1" + } + }, + "node_modules/accepts": { + "version": "1.3.8", + "resolved": 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