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@cityofzion/neo-js

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Running NEO blockchain full node with Node.js and MongoDB.

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<!doctype html> <html class="default no-js"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>@cityofzion/neo-js</title> <meta name="description" content=""> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="assets/css/main.css"> </head> <body> <header> <div class="tsd-page-toolbar"> <div class="container"> <div class="table-wrap"> <div class="table-cell" id="tsd-search" data-index="assets/js/search.js" data-base="."> <div class="field"> <label for="tsd-search-field" class="tsd-widget search no-caption">Search</label> <input id="tsd-search-field" type="text" /> </div> <ul class="results"> <li class="state loading">Preparing search index...</li> <li class="state failure">The search index is not available</li> </ul> <a href="index.html" class="title">@cityofzion/neo-js</a> </div> <div class="table-cell" id="tsd-widgets"> <div id="tsd-filter"> <a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a> <div class="tsd-filter-group"> <div class="tsd-select" id="tsd-filter-visibility"> <span class="tsd-select-label">All</span> <ul class="tsd-select-list"> <li data-value="public">Public</li> <li data-value="protected">Public/Protected</li> <li data-value="private" class="selected">All</li> </ul> </div> <input type="checkbox" id="tsd-filter-inherited" checked /> <label class="tsd-widget" for="tsd-filter-inherited">Inherited</label> <input type="checkbox" id="tsd-filter-externals" checked /> <label class="tsd-widget" for="tsd-filter-externals">Externals</label> <input type="checkbox" id="tsd-filter-only-exported" /> <label class="tsd-widget" for="tsd-filter-only-exported">Only exported</label> </div> </div> <a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a> </div> </div> </div> </div> <div class="tsd-page-title"> <div class="container"> <ul class="tsd-breadcrumb"> <li> <a href="globals.html">Globals</a> </li> </ul> <h1> @cityofzion/neo-js</h1> </div> </div> </header> <div class="container container-main"> <div class="row"> <div class="col-8 col-content"> <div class="tsd-panel tsd-typography"> <p align="center"> <img src="http://res.cloudinary.com/vidsy/image/upload/v1503160820/CoZ_Icon_DARKBLUE_200x178px_oq0gxm.png" width="125px" alt="City of Zion logo"> </p> <p align="center" style="font-size: 32px;"> <strong>neo-js</strong> </p> <p align="center"> Running NEO blockchain full node with Node.js and MongoDB. </p> <p align="center"> <a href="https://badge.fury.io/js/%40cityofzion%2Fneo-js"> <img src="https://badge.fury.io/js/%40cityofzion%2Fneo-js.svg" alt="npm version"> </a> </p> <h2 id="overview">Overview</h2> <p><code>neo-js</code> package is designed to interface with the NEO blockchain in a number of different ways that are configured by options that are used to initialize a node. A few examples of these different interaction mechanics are defined in the quickstart below as well as in the examples.</p> <p><strong>This is not a SDK library for interacting with NEO blockchain. You are looking for <a href="https://github.com/cityofzion/neon-js"><code>neon-js</code></a>.</strong></p> <h2 id="getting-started">Getting Started</h2> <h3 id="preparations">Preparations</h3> <p>Currently this module only support MongoDB for synchronizing the blockchain. You are expect to be connected to an instance of MongoDB 3.2+ to use most of its features.</p> <h3 id="system-recommendations">System Recommendations</h3> <ul> <li>NodeJS 8+</li> <li>MongoDB 3.2+</li> </ul> <h2 id="installation">Installation</h2> <p>Install the package using:</p> <pre><code class="language-bash">$ npm install --save @cityofzion/neo-js</code></pre> <p>Alternatively, to access to the latest available code, you can reference to the git repository directly:</p> <pre><code class="language-bash">$ npm install --save git://github.com/CityOfZion/neo-js.git<span class="hljs-comment">#develop</span></code></pre> <h2 id="quick-start">Quick Start</h2> <p>More comprehensive examples can be found at <a href="https://github.com/rockacola/neo-js-examples"><code>neo-js-examples</code></a> repository.</p> <pre><code class="language-js"><span class="hljs-keyword">const</span> Neo = <span class="hljs-built_in">require</span>(<span class="hljs-string">'@cityofzion/neo-js'</span>).Neo</code></pre> <p>To create a new blockchain instance:</p> <pre><code class="language-js"><span class="hljs-comment">// Create a neo instances to interface with RPC methods</span> <span class="hljs-keyword">const</span> testnetNeo = <span class="hljs-keyword">new</span> Neo({ <span class="hljs-attr">network</span>: <span class="hljs-string">'testnet'</span> }) <span class="hljs-comment">// Wait for mesh to be ready before attempt to fetch block information</span> testnetNeo.mesh.on(<span class="hljs-string">'ready'</span>, () =&gt; { testnetNeo.api.getBlockCount() .then(<span class="hljs-function">(<span class="hljs-params">res</span>) =&gt;</span> { <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Testnet getBlockCount:'</span>, res) }) }) <span class="hljs-comment">// To connect to the mainnet:</span> <span class="hljs-keyword">const</span> mainnetNeo = <span class="hljs-keyword">new</span> Neo({ <span class="hljs-attr">network</span>: <span class="hljs-string">'mainnet'</span> }) mainnetNeo.mesh.on(<span class="hljs-string">'ready'</span>, () =&gt; { mainnetNeo.api.getBlock(<span class="hljs-number">1000</span>) .then(<span class="hljs-function">(<span class="hljs-params">res</span>) =&gt;</span> { <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Mainnet getBlock(1000).hash:'</span>, res.hash) }) })</code></pre> <p>This will create a new node instance and configure it to sync the blockchain to the defined mongoDB collections:</p> <pre><code class="language-js"><span class="hljs-keyword">const</span> options = { <span class="hljs-attr">network</span>: <span class="hljs-string">'testnet'</span>, <span class="hljs-attr">storageType</span>: <span class="hljs-string">'mongodb'</span>, <span class="hljs-attr">storageOptions</span>: { <span class="hljs-attr">connectionString</span>: <span class="hljs-string">'mongodb://localhost/neo_testnet'</span>, }, } <span class="hljs-comment">// Create a neo instance</span> <span class="hljs-keyword">const</span> neo = <span class="hljs-keyword">new</span> Neo(options) <span class="hljs-comment">// Get block height</span> neo.storage.on(<span class="hljs-string">'ready'</span>, () =&gt; { neo.storage.getHighestBlockHeight() .then(<span class="hljs-function">(<span class="hljs-params">res</span>) =&gt;</span> { <span class="hljs-built_in">console</span>.log(<span class="hljs-string">'Block height:'</span>, res) }) })</code></pre> <h2 id="documentation">Documentation</h2> <p>Documentation for the project can be found at:</p> <ul> <li><a href="http://cityofzion.io/neo-js/">http://cityofzion.io/neo-js/</a></li> </ul> <p>You can find more code examples at repository:</p> <ul> <li><a href="https://github.com/rockacola/neo-js-examples">https://github.com/rockacola/neo-js-examples</a></li> </ul> <h2 id="blockchain-bootstrap-files">Blockchain Bootstrap Files</h2> <p><a href="https://github.com/CityOfZion/neo-js/blob/master/BOOTSTRAP_FILES.md"><em>Please refer to Bootstrap Files document</em></a></p> <h2 id="options">Options</h2> <p><a href="https://github.com/CityOfZion/neo-js/blob/master/OPTIONAL_PARAMETERS.md"><em>Please refer to Optional Parameters document</em></a></p> <h2 id="events">Events</h2> <p><a href="https://github.com/CityOfZion/neo-js/blob/master/EVENT_EMITTERS.md"><em>Please refer to Event Emitters document</em></a></p> <h2 id="contribution">Contribution</h2> <p><code>neo-js</code> always encourages community code contribution. Before contributing please read the <a href="https://github.com/CityOfZion/neo-js/blob/master/.github/CONTRIBUTING.md">contributor guidelines</a> and search the issue tracker as your issue may have already been discussed or fixed. To contribute, fork <code>neo-js</code>, commit your changes and submit a pull request.</p> <p>By contributing to <code>neo-js</code>, you agree that your contributions will be licensed under its MIT license.</p> <h2 id="license">License</h2> <ul> <li>Open-source <a href="https://github.com/CityOfZion/neo-js/blob/master/LICENSE.md">MIT</a>.</li> <li>Authors:<ul> <li><a href="https://github.com/lllwvlvwlll">@lllwvlvwlll</a></li> <li><a href="https://github.com/rockacola">@rockacola</a></li> </ul> </li> </ul> </div> </div> <div class="col-4 col-menu menu-sticky-wrap menu-highlight"> <nav class="tsd-navigation primary"> <ul> <li class="globals "> <a href="globals.html"><em>Globals</em></a> </li> <li class=" tsd-kind-external-module"> <a href="modules/_analyzers_block_analyzer_.html">"analyzers/block-<wbr>analyzer"</a> </li> <li class=" tsd-kind-external-module"> <a href="modules/_common_constants_.html">"common/constants"</a> </li> <li class=" tsd-kind-external-module"> <a 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