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Managing Node.js Instances with Oracle APEX

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Kai Donato

The document discusses managing Node.js instances using Oracle APEX, highlighting the features of Node.js and the PM2 process manager. It explains how APEX can interface with PM2 through REST APIs and WebSockets for real-time data communication. The presentation emphasizes the advantages of using these technologies, such as lightweight operation and platform independence.

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Managing Node.js Instances with Oracle APEX
Managing Node.js Instances with Oracle APEX Kai Donato Jun 27, 2017 | Kscope17
3 Facts & Figures Independent Technology House with Cross-Industry Expertise Headquarter Ratingen (North Rhine – Westphalia) 260 Employees Founded 1994 Branches Dortmund, Cologne, Frankfurt am Main Top Company for Trainees & Students Privately- Owned Corporation Oracle Platinum Partner 28 Mio. Euro Revenue
4 • Employee at MT AG in Ratingen since January 2014 • Senior Consultant for APEX Development • DOAG-Initiator - HTML5 and JavaScript • More than 12 Years expertise in Web-Development • Systems Integrations Specialist UNIX-Server and Networkadministration About me @_KaiDonato KaiDonato
Managing Node.js Instances with Oracle APEX
• In continuous development since 2009 (currently in version 7.9.0) • Server-side JavaScript • Based on Chromium JavaScript-Engine V8 (You can use Chakra as well.) • Lightweight (minimal need of ressources) • Very Extendable (about 492.039 Packages on „npmjs.org“ available. Stand: 28th May 2017) • Platform independence • Non-Blocking 6 Node.js
Keep the Node.js- Process running
• A Node.js-Application is running ... ... single-threaded ... bound to the executing terminal-session (normally) ... lightweight 8 Node.js
PM2 Advanced, production process manager for Node.js
• Max Memory Reload • Easy clustering • Log management • Watch & Reload • Monitoring 10 PM2
DEMO (PM2)
Use APEX instead of the terminal!
DEMO (APEX APP)
• One controlling Node.js is working as an API-Wrapper • PM2 is providing all relevant data in JSON-format • A wrapper is preparing all data from PM2-API for the APEX-Frontend 14 PM2 - API
PM2-Controller (Wrapper) Passing all information about running instances (JSON) Sending controlling-instructions
Managing Node.js Instances with Oracle APEX
• As a REST-Interface: • /list – Lists all running processes • /ctl – Lists all running processes • /ctl/restart/<id> – Restarts a process with a specific ID • /ctl/stop/<id> – Stops a process with a specific ID 17 PM2 - Wrapper
• WebSockets: • WebSocket-Plugin for APEX • Register connecting clients • Bi-directional communication (instead of one-direction REST) • Pushing data every few seconds 18 PM2 - Wrapper
The APEX-Frontend
• Mustache.js • Template for Instance-Card (Easy mapping incoming data to template) • WebSocket-Plugin for APEX • Easy creation of WebSocket-Connections • Dynamic Action for receiving messages • Circliful • Display CPU-Usage • xCharts • Displaying realtime Line-Charts 20 APEX-Frontend
Managing Node.js Instances with Oracle APEX
Managing Node.js Instances with Oracle APEX
Kai Donato Telefon: +49 2102 30961 – 0 kai.donato@mt-ag.com @_KaiDonato
Managing Node.js Instances with Oracle APEX

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Managing Node.js Instances with Oracle APEX

  • 2. Managing Node.js Instances with Oracle APEX Kai Donato Jun 27, 2017 | Kscope17
  • 3. 3 Facts & Figures Independent Technology House with Cross-Industry Expertise Headquarter Ratingen (North Rhine – Westphalia) 260 Employees Founded 1994 Branches Dortmund, Cologne, Frankfurt am Main Top Company for Trainees & Students Privately- Owned Corporation Oracle Platinum Partner 28 Mio. Euro Revenue
  • 4. 4 • Employee at MT AG in Ratingen since January 2014 • Senior Consultant for APEX Development • DOAG-Initiator - HTML5 and JavaScript • More than 12 Years expertise in Web-Development • Systems Integrations Specialist UNIX-Server and Networkadministration About me @_KaiDonato KaiDonato
  • 6. • In continuous development since 2009 (currently in version 7.9.0) • Server-side JavaScript • Based on Chromium JavaScript-Engine V8 (You can use Chakra as well.) • Lightweight (minimal need of ressources) • Very Extendable (about 492.039 Packages on „npmjs.org“ available. Stand: 28th May 2017) • Platform independence • Non-Blocking 6 Node.js
  • 8. • A Node.js-Application is running ... ... single-threaded ... bound to the executing terminal-session (normally) ... lightweight 8 Node.js
  • 10. • Max Memory Reload • Easy clustering • Log management • Watch & Reload • Monitoring 10 PM2
  • 12. Use APEX instead of the terminal!
  • 14. • One controlling Node.js is working as an API-Wrapper • PM2 is providing all relevant data in JSON-format • A wrapper is preparing all data from PM2-API for the APEX-Frontend 14 PM2 - API
  • 15. PM2-Controller (Wrapper) Passing all information about running instances (JSON) Sending controlling-instructions
  • 17. • As a REST-Interface: • /list – Lists all running processes • /ctl – Lists all running processes • /ctl/restart/<id> – Restarts a process with a specific ID • /ctl/stop/<id> – Stops a process with a specific ID 17 PM2 - Wrapper
  • 18. • WebSockets: • WebSocket-Plugin for APEX • Register connecting clients • Bi-directional communication (instead of one-direction REST) • Pushing data every few seconds 18 PM2 - Wrapper
  • 20. • Mustache.js • Template for Instance-Card (Easy mapping incoming data to template) • WebSocket-Plugin for APEX • Easy creation of WebSocket-Connections • Dynamic Action for receiving messages • Circliful • Display CPU-Usage • xCharts • Displaying realtime Line-Charts 20 APEX-Frontend
  • 23. Kai Donato Telefon: +49 2102 30961 – 0 [email protected] @_KaiDonato