Build a Select-Options for the Terminal using Nodejs by ...

[How To]Full Node (Beta) + GUI + Staking on Raspberry PI 3

Hello everyone,
With the Full Node Beta recently being released on 3/28 and the Full Node GUI on 4/11, I thought it would be an excellent time to update the RPi tutorial by olcko and demon for the RPi. I've been running it now for about 1 week and it has been working great so far, but I haven't been connected to many peers running the full node. Hopefully this tutorial will help change that!
This tutorial will take over from the previous tutorial's step 4. Steps 1-3 cover installing Raspbian and SSH on the RPi and are excellent.
PREREQUISITES
FULL NODE Setup
mkdir StratisFullNode
cd StratisFullNode
git clone https://github.com/stratisproject/StratisBitcoinFullNode.git
cd StratisBitcoinFullNode
git submodule update --init --recursive
cd src
restore
build
cd Stratis.StratisD
run -apiuri=http://0.0.0.0:32771
The "apiuri" option enables access to the API from another device on your network (Thanks Daan Damhuis!).
That's it! Your node should be running now, but may take a while to sync. You can test the node's API by pointing your browser to http://:37221/swagge
If you don't plan on using RPC, make sure you follow the instructions from the previous tutorial step 3 to block RPC connections.
sudo ufw deny 16174
Full Node GUI Setup
Now that the Core Daemon is running, we can install the GUI frontend. We will be following the instructions from here. The GUI that interacts with the node can be installed on the RPi or another device on your network (with some tweaks to the underlying code, below).
cd ~/StratisFullNode
git clone https://www.github.com/stratisproject/FullNodeUI
cd FullNodeUI/FullNodeUI.UI
npm run mainnet
That's it! Go ahead and set up your new wallet!
Remote GUI Tweaks
I'm adding this section for RPi owners who don't run a GUI on their RPi device, but may want to run the GUI on another device on their network. This can be done because the GUI interacts with the full node through the API; however it will take some tweaks to the code before compiling to make this set-up work. The instructions for "Full Node GUI Setup" above should be run on that device.
There is one place in the code where you need to replace "localhost" with your RPi's local private network IP address.
  • src/app/shared/services/api.service.ts#38
this.stratisApiUrl = 'http://:' + this.apiPort + '/api';
You will also need to comment out a few sections to prevent the GUI from starting up or shutting down the full node when you open/close the GUI.
  • main.ts#86
//startStratisApi();
  • main.ts#96
//closeStratisApi();
Helpful RPi tips for remote management
  • Use Screen + SSH! Screen is a wonderful utility that will leave your session running when you disconnect from ssh. This is available via sudo apt-get install screen on your RPi. You can reconnect when you return at another ssh session with:
screen -x
  • Sometimes the full node on your RPi will hang or unexpectedly crash - stopping staking in the process. Borrowing from here, I have created a script that will monitor for hangs or crashes and restart the node.
  • If the node is restarted, you will still need to re-enable staking. This can be accomplished through the GUI, a browser using swagger, or with an API call through a local script (insecure).
Sample helper scripts, including a .screenrc configuration, for the above can be found in a pastebin here.
Example API calls can be found on the full node's swagger API interface.
  • Note: your wallet passphrase must be sent via POST to re-enable staking.
I hope you found this helpful!
Please feel free to message me with questions/errors/improvements or find me on the discord/telegram as @TjadenFroyda. I'll update this post with feedback.
Donations are welcome as well: SNSwQVvB5FB6KPVT7325tJGWXbxVd4xceR
submitted by gopherdoc to stratisplatform [link] [comments]

I built a 100% open-source hosting platform for JavaScript microservices and webhooks, in Javascript. Ask me anything! Architectural write-up included.

Hello. I built a 100% open-source hosting platform for JavaScript microservices, in Javascript. Ask me anything!
The project: http://hook.io
The source code: http://github.com/bigcompany/hook.io
Built with: Node.js, CouchDB, and Github Gist. Node Package Manager modules are fully supported.
Architectural details can be found a bit further down.
Interested, but too busy to read this now?
If you'd like, you can run the following Curl command to opt-in to our mailing list. We'll periodically send you updates about the project.
curl [email protected]
Replace [email protected] with your email address.
What is the purpose of hook.io?
hook.io is an open-source hosting platform for webhooks and microservices. The microservice architectural style is an approach to developing a single application as a suite of small services, each running in its own process and communicating with lightweight mechanisms. hook.io provides an easy way to create, host, and share microservices. Through developing many small re-usable microservices, you can reduce the complexity of your applications while improving stability.
Why or how would I want to use hook.io?
You should want to use hook.io if it can make your life as a developer easier.
The most basic use-case for hook.io is quick and free webhook hosting. You can instantly create a simple hook which parses the incoming parameters of an HTTP request and performs arbitrary actions on it. For instance: Send an SMS message every-time the Hook is requested as a webpage. Since NPM is supported, you can re-use any existing library from the extensive NPM module repository. You can also configure Hooks to be executed on a schedule using a Cron pattern.
At this point, we will take note that Hooks are fully streaming. Inside your Hook source code you have direct access to Node's http.IncomingMessage and httpServer.ServerResponse request and response streams. This means you can treat the inside of a Hook the exact same way as if it were inside a streaming middleware in a regular node http server. Having direct access to these streams is extremely useful and I am unsure if any other microservice hosting providers currently offer this feature.
More advanced use-cases for hook.io would be replacing individual parts of your application with microservices. Instead of adding a new route or module to your application , you could instead create a Hook responsible for only one unit of functionality and call it using a regular HTTP request from inside your existing application. One specific example could be building a Hook with a custom theme which acts perfectly as a stand-alone sign-up form. This sign-up form can then be loaded server-side in your application using one HTTP get request. It might sound complicated at first, but integrating microservices with your existing application is actually very easy. In the upcoming weeks we'll work on releasing specific guides for separating application functionalities into microservices.
An even more advanced usage would be building a suite of Hooks and composing them to create new and unique applications! Since every Hook understands Standard In and Standard Out and Hooks can easily call other Hooks from inside each other, there are an endless amount of combinations to be made. This composability enables the foundation for Flow-based Programming without imposing any specific rules for composition. A specific example could be building a Hook ( called "tar" ) responsible for taking in STDIN and streaming out a compressed tar file. Once this Hook is created, you could easily pipe the results of another Hook ( such as an image downloader ) into the "tar" Hook. These Hooks don't exist yet, but I am certain someone will build them in the near future.
Unix Pipes!
hook.io is very friendly with Unix Pipes. Using STDOUT and STDIN you can connect hook.io to your existing Unix Tool chain. The best way to explain this concept is to review the Curl examples.
Here is one specific example of using hook.io to flip a cat upside-down with cat and curl. You will need to provide your own cat.png
cat cat.png | curl -F 'degrees=180' -F '[email protected];type=image/png' http://hook.io/Marak/image/rotate > upsidedown-cat.png
The Data!
If you noticed in the last example, hook.io is fully capable of streaming binary data. It also supports streaming file uploads, multipart form uploads, and will assist in parsing all incoming form fields, JSON, and query string data.
Software Architecture
The core software architecture of hook.io is Resource-View-Presenter ( RVP ).
Resources are created using the npm resource module.
View-Presenters are created using the npm view module with regular HTML, CSS, and JavaScript. The same View-Presenter pattern is also used to implement custom theming for Hooks see: hook.io/themes
Important dependencies
mschema - Provides validation through-out the entire stack.
big - Small application framework. Provides website app which hook.io extends.
resource-http - Provides core HTTP server API. Helps in configuring Express with middlewares like Passport
resource-mesh - Provides a distributed event emitter mesh using a star network topography. hook.io primarily uses this module as a monitoring agent to report status back to our monitoring sink.
resource-user - Provides basic user API ( signups / logins / encrypted passwords / password resets / etc )
Server Architecture
There is one front-facing HTTP server and any number of Hook Workers.
The front-facing server is responsible for serving static content, maintaining user session data, and piping requests between the client and Worker.
Workers are responsible for executing user-submitted source code and piping their responses through the front-facing server to the client.
At this point, we will take note that communication between the Hook and client remains streaming throughout the entire architecture. This gives hook.io the ability to perform complex tasks like transcoding large video streams without worrying about clogging up any parts of the system with large memory buffers.
Hook Servers and Hook Workers are immutable and stateless to ensure stability of the platform. They are designed to fail fast and restart fast. mon is used as a process supervisor.
This architecture can theoretically scale to upwards of 10,000 concurrent connections. Realistically, it will probably be closer to 4,000. When the site needs to scale past this, we will create several front-facing servers and load balance incoming HTTP requests to them using DNS.
Hook and User configuration data are stored in a CouchDB database. If the database grows too large, we will split it into several smaller database severs sharded by the first alphabetic letter of every document's primary key.
Source code for Hooks is currently stored on Github as Github Gists. I'd imagine sometime in the future we will add the option to store and edit source code directly on hook.io itself. The project is open-source, so you could be the first to open up the issue!
Questions? Comments? Feedback?
Let me know! Open-source projects get better with collaboration. Every comment and piece of feedback counts.
Maybe take five minutes to try the platform out? You might like it!
The dependency tree for hook.io is re-used in many applications. Several of these dependencies I maintain myself. If you have feedback or comments about any specific dependency let me know!
submitted by _Marak_ to javascript [link] [comments]

Architectural Writeup: I built an open-source hosting platform for node.js microservices. Ask Me Anything!

Hello. I built a 100% open-source hosting platform for JavaScript microservices, in Javascript. Ask me anything!
The project: http://hook.io
The source code: http://github.com/bigcompany/hook.io
Built with: Node.js, CouchDB, and Github Gist. Node Package Manager modules are fully supported.
Architectural details can be found a bit further down.
Interested, but too busy to read this now?
If you'd like, you can run the following Curl command to opt-in to our mailing list. We'll periodically send you updates about the project.
curl [email protected]
Replace [email protected] with your email address.
What is the purpose of hook.io?
hook.io is an open-source hosting platform for webhooks and microservices. The microservice architectural style is an approach to developing a single application as a suite of small services, each running in its own process and communicating with lightweight mechanisms. hook.io provides an easy way to create, host, and share microservices. Through developing many small re-usable microservices, you can reduce the complexity of your applications while improving stability.
As a simple comparison, a single microservice could be considered the equivalent to what would be a single route in an Express.js application.
Why or how would I want to use hook.io?
You should want to use hook.io if it can make your life as a developer easier.
The most basic use-case for hook.io is quick and free webhook hosting. You can instantly create a simple hook which parses the incoming parameters of an HTTP request and performs arbitrary actions on it. For instance: Send an SMS message every-time the Hook is requested as a webpage. Since NPM is supported, you can re-use any existing library from the extensive NPM module repository. You can also configure Hooks to be executed on a schedule using a Cron pattern.
At this point, we will take note that Hooks are fully streaming. Inside your Hook source code you have direct access to Node's http.IncomingMessage and httpServer.ServerResponse request and response streams. This means you can treat the inside of a Hook the exact same way as if it were inside a streaming middleware in a regular node http server. Having direct access to these streams is extremely useful and I am unsure if any other microservice hosting providers currently offer this feature.
More advanced use-cases for hook.io would be replacing individual parts of your application with microservices. Instead of adding a new route or module to your application , you could instead create a Hook responsible for only one unit of functionality and call it using a regular HTTP request from inside your existing application. One specific example could be building a Hook with a custom theme which acts perfectly as a stand-alone sign-up form. This sign-up form can then be loaded server-side in your application using one HTTP get request. It might sound complicated at first, but integrating microservices with your existing application is actually very easy. In the upcoming weeks we'll work on releasing specific guides for separating application functionalities into microservices.
An even more advanced usage would be building a suite of Hooks and composing them to create new and unique applications! Since every Hook understands Standard In and Standard Out and Hooks can easily call other Hooks from inside each other, there are an endless amount of combinations to be made. This composability enables the foundation for Flow-based Programming without imposing any specific rules for composition. A specific example could be building a Hook ( called "tar" ) responsible for taking in STDIN and streaming out a compressed tar file. Once this Hook is created, you could easily pipe the results of another Hook ( such as an image downloader ) into the "tar" Hook. These Hooks don't exist yet, but I am certain someone will build them in the near future.
Unix Pipes!
hook.io is very friendly with Unix Pipes. Using STDOUT and STDIN you can connect hook.io to your existing Unix Tool chain. The best way to explain this concept is to review the Curl examples.
Here is one specific example of using hook.io to flip a cat upside-down with cat and curl. You will need to provide your own cat.png
cat cat.png | curl -F 'degrees=180' -F '[email protected];type=image/png' http://hook.io/Marak/image/rotate > upsidedown-cat.png
The Data!
If you noticed in the last example, hook.io is fully capable of streaming binary data. It also supports streaming file uploads, multipart form uploads, and will assist in parsing all incoming form fields, JSON, and query string data.
Software Architecture
The core software architecture of hook.io is Resource-View-Presenter ( RVP ).
Resources are created using the npm resource module.
View-Presenters are created using the npm view module with regular HTML, CSS, and JavaScript. The same View-Presenter pattern is also used to implement custom theming for Hooks see: hook.io/themes
Important dependencies
mschema - Provides validation through-out the entire stack.
big - Small application framework. Provides website app which hook.io extends.
resource-http - Provides core HTTP server API. Helps in configuring Express with middlewares like Passport
resource-mesh - Provides a distributed event emitter mesh using a star network topography. hook.io primarily uses this module as a monitoring agent to report status back to our monitoring sink.
resource-user - Provides basic user API ( signups / logins / encrypted passwords / password resets / etc )
Server Architecture
There is one front-facing HTTP server and any number of Hook Workers.
The front-facing server is responsible for serving static content, maintaining user session data, and piping requests between the client and Worker.
Workers are responsible for executing user-submitted source code and piping their responses through the front-facing server to the client.
At this point, we will take note that communication between the Hook and client remains streaming throughout the entire architecture. This gives hook.io the ability to perform complex tasks like transcoding large video streams without worrying about clogging up any parts of the system with large memory buffers.
Hook Servers and Hook Workers are immutable and stateless to ensure stability of the platform. They are designed to fail fast and restart fast. mon is used as a process supervisor.
This architecture can theoretically scale to upwards of 10,000 concurrent connections. Realistically, it will probably be closer to 4,000. When the site needs to scale past this, we will create several front-facing servers and load balance incoming HTTP requests to them using DNS.
Hook and User configuration data are stored in a CouchDB database. If the database grows too large, we will split it into several smaller database severs sharded by the first alphabetic letter of every document's primary key.
Source code for Hooks is currently stored on Github as Github Gists. I'd imagine sometime in the future we will add the option to store and edit source code directly on hook.io itself. The project is open-source, so you could be the first to open up the issue!
Questions? Comments? Feedback?
Let me know! Open-source projects get better with collaboration. Every comment and piece of feedback counts.
Maybe take five minutes to try the platform out? You might like it!
The dependency tree for hook.io is re-used in many applications. Several of these dependencies I maintain myself. If you have feedback or comments about any specific dependency let me know!
submitted by _Marak_ to node [link] [comments]

nodejs application en plesk 2. Node.js Process Input Output (I/O) Node.js: Migration from JavaScript to TypeScript Everything About Node.js - YouTube 8. LDAP Node: LDAP Add User in Node js How to Deploy NodeJS Application on Shared Hosting cPanel easy

Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.Provide details and share your research! But avoid …. Asking for help, clarification, or responding to other answers. @hexacyanide's answer is almost a complete one. On Windows command prince could be prince.exe, prince.cmd, prince.bat or just prince (I'm no aware of how gems are bundled, but npm bins come with a sh script and a batch script - npm and npm.cmd).If you want to write a portable script that would run on Unix and Windows, you have to spawn the right executable. Tags: nodejs, streams; Level: Intermediate; Prerequisites: buffers, events, install npm modules ; Node.js v0.10+ (latest stable is v0.10.16 as of this writing), but streams have generally been a part of Node.js from its early days; Streams2 Writable abstract class can be used with older versions (prior to v0.10) of node by using npm module readable-stream (tested with v1.0.15) Storing data ... child_process. exec (command, [options], callback); // Runs a command in a shell and buffers the output. child_process. execFile (file, [args], [options], [callback]); // Runs a command in a shell and buffers the output. child_process. fork (modulePath, [args], [options]); // This is a special case of the spawn() functionality for spawning Node ... Friday, 27 January 2017. Nodejs Stdout Binary Options Streams-powered Node.js APIs. Due to their advantages, many Node.js core modules provide native stream handling capabilities, most notably: process.stdin returns a stream connected to stdin; process.stdout returns a stream connected to stdout; process.stderr returns a stream connected to stderr; fs.createReadStream() creates a readable stream to a file fs.createWriteStream() creates a writable ... First, we will look into the stdin#data event. This event is fired whenever we type on the terminal and Nodejs wants to write data to the stdout. In the hook handler, we will listen for the up arrow and down arrow buttons. Before that, we would use the stdout to write the question and the options to select. I know this is a very old question but I didn't see anybody talking about the main difference between process.stdout.write and console.log and I just want to mention it.. As Mauvis Leford and TK-421 pointed out, the console.log adds a line-break character at the end of the line (\n) but that's not all what it does.. The code has not changed since at least 0.10.X version and now we have a a 5.X ... Ah, problem is: If timeout is greater than 0, then it will kill the child process if it runs longer than timeout milliseconds. The child process is killed with killSignal (default: 'SIGTERM'). dockerode . Not another Node.js Docker Remote API module. dockerode objectives:. streams - dockerode does NOT break any stream, it passes them to you allowing for some stream voodoo.; stream demux - Supports optional demultiplexing.; entities - containers, images and execs are defined entities and not random static methods.; run - dockerode allow you to seamless run commands in a container ala ...

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nodejs application en plesk

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