mirror of
https://github.com/corda/corda.git
synced 2024-12-22 22:32:26 +00:00
338 lines
16 KiB
HTML
338 lines
16 KiB
HTML
<!-- If you edit this, then please make the same changes to layout_for_doc_website.html, as that is used for the web
|
|
doc site generation which we put analytics tracking on to identify any potential problem pages -->
|
|
|
|
|
|
|
|
|
|
<!DOCTYPE html>
|
|
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
|
|
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
|
|
<head>
|
|
<meta charset="utf-8">
|
|
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
|
|
<title>Corda ecosystem — R3 Corda latest documentation</title>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<link rel="stylesheet" href="_static/css/custom.css" type="text/css" />
|
|
|
|
|
|
|
|
|
|
|
|
<link rel="top" title="R3 Corda latest documentation" href="index.html"/>
|
|
<link rel="next" title="Data model" href="key-concepts-data-model.html"/>
|
|
<link rel="prev" title="Overview" href="key-concepts.html"/>
|
|
|
|
|
|
<script src="_static/js/modernizr.min.js"></script>
|
|
|
|
</head>
|
|
|
|
<body class="wy-body-for-nav" role="document">
|
|
|
|
<div class="wy-grid-for-nav">
|
|
|
|
|
|
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
|
|
<div class="wy-side-scroll">
|
|
<div class="wy-side-nav-search">
|
|
|
|
|
|
|
|
|
|
<a href="index.html" class="icon icon-home"> R3 Corda
|
|
|
|
|
|
|
|
</a>
|
|
|
|
|
|
|
|
|
|
<div class="version">
|
|
latest
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div role="search">
|
|
<form id="rtd-search-form" class="wy-form" action="search.html" method="get">
|
|
<input type="text" name="q" placeholder="Search docs" />
|
|
<input type="hidden" name="check_keywords" value="yes" />
|
|
<input type="hidden" name="area" value="default" />
|
|
</form>
|
|
</div>
|
|
|
|
|
|
<br>
|
|
API reference: <a href="api/kotlin/corda/index.html">Kotlin</a>/ <a href="api/javadoc/index.html">JavaDoc</a>
|
|
<br>
|
|
<a href="https://discourse.corda.net">Discourse Forums</a>
|
|
<br>
|
|
<a href="http://slack.corda.net">Slack</a>
|
|
<br>
|
|
|
|
</div>
|
|
|
|
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
|
|
|
|
|
|
|
|
<p class="caption"><span class="caption-text">Getting started</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="inthebox.html">What’s included?</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="getting-set-up.html">Getting set up</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="getting-set-up-fault-finding.html">Troubleshooting</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="running-the-demos.html">Running the demos</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="CLI-vs-IDE.html">CLI vs IDE</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">Key concepts</span></p>
|
|
<ul class="current">
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts.html">Overview</a></li>
|
|
<li class="toctree-l1 current"><a class="current reference internal" href="#">Corda ecosystem</a><ul>
|
|
<li class="toctree-l2"><a class="reference internal" href="#cordapps">CorDapps</a></li>
|
|
</ul>
|
|
</li>
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts-data-model.html">Data model</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts-core-types.html">Core types</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts-financial-model.html">Financial model</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts-flow-framework.html">Flow framework</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts-consensus-notaries.html">Consensus and notaries</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts-vault.html">Vault</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="key-concepts-security-model.html">Security model</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">CorDapps</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="creating-a-cordapp.html">CorDapp basics</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-cordapp.html">The example CorDapp</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">The Corda node</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="clientrpc.html">Client RPC</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="messaging.html">Networking and messaging</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="persistence.html">Persistence</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="node-administration.html">Node administration</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="corda-configuration-file.html">Node configuration</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="corda-plugins.html">The Corda plugin framework</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="node-services.html">Brief introduction to the node services</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="node-explorer.html">Node Explorer</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="permissioning.html">Network permissioning</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">Tutorials</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-contract.html">Writing a contract</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-contract-clauses.html">Writing a contract using clauses</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-test-dsl.html">Writing a contract test</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="contract-upgrade.html">Upgrading Contracts</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-integration-testing.html">Integration testing</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-clientrpc-api.html">Client RPC API tutorial</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-building-transactions.html">Building transactions</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="flow-state-machines.html">Writing flows</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="flow-testing.html">Writing flow tests</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="running-a-notary.html">Running a notary service</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="using-a-notary.html">Using a notary service</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="oracles.html">Writing oracle services</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="tutorial-attachments.html">Using attachments</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="event-scheduling.html">Event scheduling</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">Other</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="network-simulator.html">Network Simulator</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="clauses.html">Clauses</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="merkle-trees.html">Transaction tear-offs</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">Component library</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="contract-catalogue.html">Contract catalogue</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="contract-irs.html">Interest rate swaps</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">Appendix</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="loadtesting.html">Load testing</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="setting-up-a-corda-network.html">What is a corda network?</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="secure-coding-guidelines.html">Secure coding guidelines</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="release-process.html">Release process</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="release-notes.html">Release notes</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="codestyle.html">Code style guide</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="building-the-docs.html">Building the documentation</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="further-notes-on-kotlin.html">Further notes on Kotlin</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="publishing-corda.html">Publishing Corda</a></li>
|
|
<li class="toctree-l1"><a class="reference internal" href="azure-vm.html">Working with the Corda Demo on Azure Marketplace</a></li>
|
|
</ul>
|
|
<p class="caption"><span class="caption-text">Glossary</span></p>
|
|
<ul>
|
|
<li class="toctree-l1"><a class="reference internal" href="glossary.html">Glossary</a></li>
|
|
</ul>
|
|
|
|
|
|
|
|
</div>
|
|
</div>
|
|
</nav>
|
|
|
|
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
|
|
|
|
|
|
<nav class="wy-nav-top" role="navigation" aria-label="top navigation">
|
|
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
|
|
<a href="index.html">R3 Corda</a>
|
|
</nav>
|
|
|
|
|
|
|
|
<div class="wy-nav-content">
|
|
<div class="rst-content">
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<div role="navigation" aria-label="breadcrumbs navigation">
|
|
<ul class="wy-breadcrumbs">
|
|
<li><a href="index.html">Docs</a> »</li>
|
|
|
|
<li>Corda ecosystem</li>
|
|
<li class="wy-breadcrumbs-aside">
|
|
|
|
|
|
<a href="_sources/key-concepts-ecosystem.txt" rel="nofollow"> View page source</a>
|
|
|
|
|
|
</li>
|
|
</ul>
|
|
<hr/>
|
|
</div>
|
|
<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
|
<div itemprop="articleBody">
|
|
|
|
<div class="section" id="corda-ecosystem">
|
|
<h1>Corda ecosystem<a class="headerlink" href="#corda-ecosystem" title="Permalink to this headline">¶</a></h1>
|
|
<p>A Corda network consists of the following components:</p>
|
|
<ul class="simple">
|
|
<li>Nodes, where each node represents a JVM run-time environment hosting Corda services and executing applications (“CorDapps”).
|
|
Nodes communicate using AMQP/1.0 over TLS.</li>
|
|
<li>A permissioning service that automates the process of provisioning TLS certificates.</li>
|
|
<li>A network map service that publishes information about nodes on the network.</li>
|
|
<li>One or more pluggable notary service types (which may be distributed over multiple nodes).
|
|
A notary guarantees uniqueness and validity of transactions.</li>
|
|
<li>Zero or more oracle services. An oracle is a well known service that signs transactions if they state a fact and that fact is considered to be true.</li>
|
|
<li>CorDapps which represent participant applications that execute contract code and communicate using the flow framework to achieve consensus over some business activity</li>
|
|
<li>Standalone Corda applications that provide manageability and tooling support to a Corda network.</li>
|
|
</ul>
|
|
<p>These components are illustrated in the following diagram:</p>
|
|
<img alt="_images/cordaNetwork.png" class="align-center" src="_images/cordaNetwork.png" />
|
|
<p>Note:</p>
|
|
<ul class="simple">
|
|
<li>Corda infrastructure services are those which all participants depend upon, such as the network map and notaries.</li>
|
|
<li>Corda services can be deployed by participants, third parties or a central network operator (eg. such as R3);
|
|
this diagram is not intended to imply only a centralised model is supported</li>
|
|
</ul>
|
|
<p>It is important to highlight the following:</p>
|
|
<ul class="simple">
|
|
<li>Corda is designed for semi-private networks in which admission requires obtaining an identity signed by a root authority.</li>
|
|
<li>Nodes are arranged in an authenticated peer to peer network. All communication is direct.</li>
|
|
<li>Data is shared on a need-to-know basis. Nodes provide the dependency graph of a transaction they are sending to another node on demand, but there is no global broadcast of all transactions.</li>
|
|
<li>Nodes are backed by a relational database and data placed in the ledger can be queried using SQL</li>
|
|
<li>The network map publishes the IP addresses through which every node on the network can be reached, along with the identity certificates of those nodes and the services they provide.</li>
|
|
<li>All communication takes the form of small multi-party sub-protocols called flows.</li>
|
|
<li>Oracles represent gateways to proprietary (or other) business logic executors (e.g., central counterparties or valuation agents) that can be verified on-ledger by participants.</li>
|
|
</ul>
|
|
<div class="section" id="cordapps">
|
|
<h2>CorDapps<a class="headerlink" href="#cordapps" title="Permalink to this headline">¶</a></h2>
|
|
<p>Corda is a platform for the writing of “CorDapps”: applications that extend the distributed ledger with new capabilities.
|
|
Such apps define new data types, new inter-node protocol flows and the “smart contracts” that determine allowed changes.
|
|
The combination of state objects (data), contract code (allowable operations), transaction flows (business logic
|
|
choreography), any necessary APIs, vault plugins, and UI components can be thought of as a shared ledger application,
|
|
or corda distributed application (“CorDapp”). This is the core set of components a contract developer on the platform
|
|
should expect to build.</p>
|
|
<p>Examples of CorDapps include asset trading (see <a class="reference internal" href="running-the-demos.html#irs-demo"><span class="std std-ref">IRS demo</span></a> and <a class="reference internal" href="running-the-demos.html#trader-demo"><span class="std std-ref">Trader demo</span></a>), portfolio valuations (see <a class="reference internal" href="running-the-demos.html#simm-demo"><span class="std std-ref">SIMM and Portfolio Demo - aka the Initial Margin Agreement Demo</span></a>), trade finance,
|
|
post-trade order matching, KYC/AML, etc.</p>
|
|
</div>
|
|
</div>
|
|
|
|
|
|
</div>
|
|
</div>
|
|
<footer>
|
|
|
|
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
|
|
|
<a href="key-concepts-data-model.html" class="btn btn-neutral float-right" title="Data model" accesskey="n">Next <span class="fa fa-arrow-circle-right"></span></a>
|
|
|
|
|
|
<a href="key-concepts.html" class="btn btn-neutral" title="Overview" accesskey="p"><span class="fa fa-arrow-circle-left"></span> Previous</a>
|
|
|
|
</div>
|
|
|
|
|
|
<hr/>
|
|
|
|
<div role="contentinfo">
|
|
<p>
|
|
© Copyright 2016, R3 Limited.
|
|
|
|
</p>
|
|
</div>
|
|
Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
|
|
|
|
</footer>
|
|
|
|
</div>
|
|
</div>
|
|
|
|
</section>
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
<script type="text/javascript">
|
|
var DOCUMENTATION_OPTIONS = {
|
|
URL_ROOT:'./',
|
|
VERSION:'latest',
|
|
COLLAPSE_INDEX:false,
|
|
FILE_SUFFIX:'.html',
|
|
HAS_SOURCE: true
|
|
};
|
|
</script>
|
|
<script type="text/javascript" src="_static/jquery.js"></script>
|
|
<script type="text/javascript" src="_static/underscore.js"></script>
|
|
<script type="text/javascript" src="_static/doctools.js"></script>
|
|
|
|
|
|
|
|
|
|
|
|
<script type="text/javascript" src="_static/js/theme.js"></script>
|
|
|
|
|
|
|
|
|
|
<script type="text/javascript">
|
|
jQuery(function () {
|
|
SphinxRtdTheme.StickyNav.enable();
|
|
});
|
|
</script>
|
|
|
|
|
|
</body>
|
|
</html> |