xp2pprocesschaindeprecated

# WindRibbon P2P Process Chain (XP2PProcessChain)

Introduction

This module is the peer-side process manager of WindRibbon P2P system. This module maintains a set of processes, you can add a process to this set dynamically. If one of these processes exits, all other processes (including this module) will exit also.

Requirements

Here is the software requirement:

Package	Version
NodeJS	>= 8.7.0

Installation

Type following command to install this package.

npm install -g xp2pprocesschain

Then you can use following command to start the system.

xp2pprocesschain -c "[Configuration Path]"

Configuration

Here is the template of configurations:

{
    "bind": {
        "address": "127.0.0.1",             //  Bind address of HTTP API.
        "port": 0                           //  Bind port of HTTP API.
    },
    "timeout": 120000,                      //  (Optional) Timeout of HTTP connections (default: 2min).
    "bootstrap": {                          //  (Optional) Bootstrap script.
        "enable": true,                     //  Whether the bootstrap script was enabled.
        "cwd": "examples/01-basic",         //  (Optional) The working directory of the bootstrap script.
        "command": "./always-loop.sh",      //  The command line of the bootstrap script.
        "arguments": [
            ...                             //  The command arguments of the bootstrap script.
        ],
        "notifier": "start: always-loop"    //  The notify message after running the bootstrap script.
    },
    "ipc": {
        "enable": false                     //  Whether the IPC was enabled.
    }
}

See "examples" directory for more details.

HTTP API

This module provides a set of external API by using HTTP.

(POST) /chain

This API was used to add a process to the processes set dynamically. The request body must be written in JSON format and the "Content-Type" header must be "application/json".

Template of the request body:

{
    "cwd": "examples/02-notifier",      //  The working directory of the new program.
    "command": "./always-loop.sh",      //  The command line of the new program.
    "notifier": "start: always-loop"    //  The notify message after executed the new program.
}

Once succeed, the API server will reply:

OK

(POST) /notify

To send a notify message, use this API.

Template of the request body:

{
    "notifier": "start: always-loop"    //  The notify message after executed the new program.
}

Once succeed, the API server will reply:

OK

IPC

This module provides IPC function to communicate with the parent process who creates this module process. To know how IPC work, see "examples/02-notifier".