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<li class="toctree-l1"><a class="reference internal" href="release-process.html#steps-to-cut-a-release">Steps to cut a release</a></li>
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<li class="toctree-l1"><a class="reference internal" href="release-notes.html">Release notes</a></li>
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<li class="toctree-l1"><a class="reference internal" href="codestyle.html">Code style guide</a></li>
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<li class="toctree-l1"><a class="reference internal" href="building-the-docs.html">Building the documentation</a></li>
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<div class="section" id="running-the-demos">
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<h1>Running the demos<a class="headerlink" href="#running-the-demos" title="Permalink to this headline">¶</a></h1>
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<p>The repository contains a small number of demo programs that run two-node networks, demonstrating functionality developed
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so far. We have:</p>
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<ol class="arabic simple">
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<li>The trader demo, which shows a delivery-vs-payment atomic swap of commercial paper for cash. You can learn more about
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how this works in <a class="reference internal" href="flow-state-machines.html"><span class="doc">Writing flows</span></a>.</li>
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<li>The IRS demo, which shows two nodes establishing an interest rate swap between them and performing fixings with a
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rates oracle, all driven via the HTTP API.</li>
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<li>The IRS demo web interface - a web interface to the IRS demo.</li>
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<li>The attachment demo, which demonstrates uploading attachments to nodes.</li>
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<li>The SIMM valuation demo, a large demo which shows two nodes agreeing on a portfolio and valuing the initial margin
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using the Standard Initial Margin Model.</li>
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<li>The distributed notary demo, which demonstrates a single node getting multiple transactions notarised by a distributed (Raft-based) notary.</li>
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</ol>
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<div class="admonition note">
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<p class="first admonition-title">Note</p>
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<p class="last">If any demos don’t work please jump on our mailing list and let us know.</p>
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</div>
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<p>The demos can be run either from the command line, or from inside IntelliJ. Running from the command line is
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recommended if you are just wanting to see them run, using IntelliJ can be helpful if you want to debug or
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develop the demos themselves.</p>
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<div class="section" id="trader-demo">
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<h2>Trader demo<a class="headerlink" href="#trader-demo" title="Permalink to this headline">¶</a></h2>
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<p>This demo brings up three nodes: Bank A, Bank B and a notary/network map node that they both use. Bank A will
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be the buyer, and self-issues some cash in order to acquire the commercial paper from Bank B, the seller.</p>
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<p>To run from the command line:</p>
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<ol class="arabic simple">
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:trader-demo:deployNodes</span></code> to create a set of configs and installs under <code class="docutils literal"><span class="pre">samples/trader-demo/build/nodes</span></code></li>
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<li>Run <code class="docutils literal"><span class="pre">./samples/trader-demo/build/nodes/runnodes</span></code> (or <code class="docutils literal"><span class="pre">runnodes.bat</span></code> on Windows) to open up three new terminals with the three nodes.</li>
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:trader-demo:runBuyer</span></code> to set up the buyer node with some self-issued cash. This step
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is not expected to print much.</li>
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:trader-demo:runSeller</span></code> to trigger the transaction. You can see both sides of the
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trade print their progress and final transaction state in the bank node tabs/windows.</li>
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</ol>
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<p>To run from IntelliJ:</p>
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<ol class="arabic simple">
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<li>Open the Corda project in IntelliJ and run the “Install” configuration</li>
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<li>Open the Corda samples project in IntelliJ and run the “Trader Demo: Run Nodes” configuration</li>
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<li>Run “Trader Demo: Run Buyer”</li>
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<li>Run “Trader Demo: Run Seller”</li>
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</ol>
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<p>In the “Trader Demo: Run Nodes” windows you should see some log lines scroll past, and within a few seconds the messages
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“Purchase complete - we are a happy customer!” and “Sale completed - we have a happy customer!” should be printed.</p>
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</div>
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<div class="section" id="irs-demo">
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<h2>IRS demo<a class="headerlink" href="#irs-demo" title="Permalink to this headline">¶</a></h2>
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<p>This demo brings up three nodes: Bank A, Bank B and a node that runs a notary, a network map and an interest rates
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oracle together. The two banks agree on an interest rate swap, and then do regular fixings of the deal as the time
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on a simulated clock passes.</p>
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<p>To run from the command line:</p>
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<ol class="arabic simple">
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:irs-demo:deployNodes</span> <span class="pre">samples:irs-demo:installDist</span></code> to install configs and a command line tool under <code class="docutils literal"><span class="pre">samples/irs-demo/build</span></code>.</li>
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<li>Change to the <code class="docutils literal"><span class="pre">samples/irs-demo/build</span></code> directory.</li>
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<li>Run <code class="docutils literal"><span class="pre">./nodes/runnodes</span></code> (or <code class="docutils literal"><span class="pre">runnodes.bat</span></code> on Windows) to open up three new terminals with the three nodes.</li>
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<li>Run <code class="docutils literal"><span class="pre">./install/irs-demo/bin/irs-demo</span> <span class="pre">--role</span> <span class="pre">UploadRates</span></code> (or use <code class="docutils literal"><span class="pre">irs-demo.bat</span></code> on Windows). You should see a
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message be printed to the first node (the notary/oracle/network map node) saying that it has accepted some new
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interest rates.</li>
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<li>Now run <code class="docutils literal"><span class="pre">irs-demo</span></code> as in step 4, but this time with <code class="docutils literal"><span class="pre">--role</span> <span class="pre">Trade</span> <span class="pre">1</span></code>. The number is a trade ID. You should
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see lots of activity as the nodes set up the deal, notarise it, get it signed by the oracle and so on.</li>
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<li>Now run <code class="docutils literal"><span class="pre">irs-demo</span> <span class="pre">--role</span> <span class="pre">Date</span> <span class="pre">2016-12-12</span></code> to roll the simulated clock forward and see some fixings take place.</li>
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</ol>
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<p>To run from IntelliJ:</p>
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<ol class="arabic simple">
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<li>Open the Corda project in IntelliJ and run the “Install” configuration</li>
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<li>Open the Corda samples project in IntelliJ and run the “IRS Demo: Run Nodes” configuration</li>
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<li>Run “IRS Demo: Run Upload Rates” to upload rates to the oracle.</li>
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<li>Run “IRS Demo: Run Trade” to have nodes agree on a trade.</li>
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<li>Run “IRS Demo: Run Date Change” to run the fixings.</li>
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</ol>
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<p>In the “IRS Demo: Run Nodes” window you’ll see a lot of activity when you run the trade and when you run the date change.
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The date change rolls the clock forwards and causes the nodes to agree on the fixings over a period.</p>
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<p>There is also an web app as part of this demo. To use this set up the trades and then navigate to
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<a class="reference external" href="http://localhost:10005/web/irsdemo">http://localhost:10005/web/irsdemo</a> and <a class="reference external" href="http://localhost:10007/web/irsdemo">http://localhost:10007/web/irsdemo</a> to see both node’s view of the ledger.</p>
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<p>To use the demos click the “Create Deal” button, fill in the form, then click the “Submit” button. Now you will be
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able to use the time controls at the top left of the home page to run the fixings. Click any individual trade in the
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blotter to view it.</p>
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</div>
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<div class="section" id="attachment-demo">
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<h2>Attachment demo<a class="headerlink" href="#attachment-demo" title="Permalink to this headline">¶</a></h2>
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<p>This demo brings up three nodes, and sends a transaction containing an attachment from one to the other. To run
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it from the command line (recommended for Mac/UNIX users!):</p>
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<ol class="arabic simple">
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:attachment-demo:deployNodes</span></code> to create a set of configs and installs under <code class="docutils literal"><span class="pre">samples/attachment-demo/build/nodes</span></code></li>
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<li>Run <code class="docutils literal"><span class="pre">./samples/attachment-demo/build/nodes/runnodes</span></code> to open up three new terminal tabs/windows with the three nodes.</li>
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:attachment-demo:runRecipient</span></code>, which will block waiting for something to happen.</li>
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:attachment-demo:runSender</span></code> in another terminal window to trigger the transaction.
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Now look at the other windows to see the output of the demo.</li>
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</ol>
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<p>Or you can run them from inside IntelliJ, but when done this way, all the node output is printed to a single console.</p>
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<ol class="arabic simple">
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<li>Open the Corda project in IntelliJ and run the “Install” configuration</li>
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<li>Open the Corda samples project in IntelliJ and run the “Attachment Demo: Run Nodes” configuration</li>
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<li>Run “Attachment Demo: Run Recipient” - this waits for a trade to start</li>
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<li>Run “Attachment Demo: Run Sender” - sends the attachment</li>
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</ol>
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<p>In the “Attachment Demo: Run Nodes” window you should see some log lines scroll past, and within a few seconds the
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message “File received - we’re happy!” should be printed.</p>
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</div>
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<div class="section" id="simm-and-portfolio-demo">
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<h2>SIMM and Portfolio demo<a class="headerlink" href="#simm-and-portfolio-demo" title="Permalink to this headline">¶</a></h2>
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<div class="admonition note">
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<p class="first admonition-title">Note</p>
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<p class="last">Read more about this demo at <a class="reference internal" href="initial-margin-agreement.html"><span class="doc">Initial margin agreements</span></a>.</p>
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</div>
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<p>To run the demo run:</p>
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<ol class="arabic simple">
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<li>Open the Corda project in IntelliJ and run the “Install” configuration</li>
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<li>Open the Corda samples project in IntelliJ and run the “Simm Valuation Demo” configuration</li>
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</ol>
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<p>Now open <a class="reference external" href="http://localhost:10005/web/simmvaluationdemo">http://localhost:10005/web/simmvaluationdemo</a> and <a class="reference external" href="http://localhost:10007/web/simmvaluationdemo">http://localhost:10007/web/simmvaluationdemo</a> to view the two nodes that this
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will have started respectively. You can now use the demo by creating trades and agreeing the valuations.</p>
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</div>
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<div class="section" id="distributed-notary-demo">
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<span id="notary-demo"></span><h2>Distributed Notary demo<a class="headerlink" href="#distributed-notary-demo" title="Permalink to this headline">¶</a></h2>
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<p>This is a simple demonstration showing a party getting transactions notarised by a distributed <a class="reference external" href="https://raft.github.io/">Raft</a>-based notary service.
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The demo will start three distributed notary nodes, and two counterparty nodes. One of the parties will generate transactions
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that move a self-issued asset to the other party, and submit them for notarisation.</p>
|
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<p>The output will display a list of notarised transaction ids and corresponding signer public keys. In the Raft distributed notary
|
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every node in the cluster services client requests, and one signature is sufficient to satisfy the notary composite key requirement.
|
|
You will notice that subsequent transactions get signed by different members of the cluster (usually allocated in a random order).</p>
|
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<p>To run from IntelliJ:</p>
|
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<ol class="arabic simple">
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<li>Open the Corda samples project in IntelliJ and run the <code class="docutils literal"><span class="pre">Notary</span> <span class="pre">Demo:</span> <span class="pre">Run</span> <span class="pre">Nodes</span></code> configuration to start the nodes.
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Once all nodes are started you will see several “Node started up and registered in ...” messages.</li>
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|
<li>Run <code class="docutils literal"><span class="pre">Notary</span> <span class="pre">Demo:</span> <span class="pre">Run</span> <span class="pre">Notarisation</span></code> to make a call to the “Party” node to initiate notarisation requests.
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In a few seconds you will see a message “Notarised 10 transactions” with a list of transaction ids and the signer public keys.</li>
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</ol>
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<p>To run from the command line:</p>
|
|
<ol class="arabic simple">
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<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:raft-notary-demo:deployNodes</span></code>, which will create node directories with configs under <code class="docutils literal"><span class="pre">samples/raft-notary-demo/build/nodes</span></code>.</li>
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|
<li>Run <code class="docutils literal"><span class="pre">./samples/raft-notary-demo/build/nodes/runnodes</span></code>, which will start the nodes in separate terminal windows/tabs.
|
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Wait until a “Node started up and registered in ...” appears on each of the terminals.</li>
|
|
<li>Run <code class="docutils literal"><span class="pre">./gradlew</span> <span class="pre">samples:raft-notary-demo:notarise</span></code> to make a call to the “Party” node to initiate notarisation requests.
|
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In a few seconds you will see a message “Notarised 10 transactions” with a list of transaction ids and the signer public keys.</li>
|
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</ol>
|
|
<p>Notary nodes store consumed states in a replicated commit log, which is backed by a H2 database on each node.
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To ascertain that the commit log is synchronised across the cluster you access and compare each of the nodes’ backing stores
|
|
by using the H2 web console:</p>
|
|
<ul>
|
|
<li><p class="first">Firstly, download <a class="reference external" href="http://www.h2database.com/html/download.html">H2 web console</a> (download the “platform-independent zip”),
|
|
and start it using a script in the extracted folder: <code class="docutils literal"><span class="pre">h2/bin/h2.sh</span></code> (or <code class="docutils literal"><span class="pre">h2.bat</span></code> for Windows)</p>
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</li>
|
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<li><p class="first">The H2 web console should start up in a web browser tab. To connect we first need to obtain a JDBC connection string.
|
|
Each node outputs its connection string in the terminal window as it starts up. In a terminal window where a node is running,
|
|
look for the following string:</p>
|
|
<p><code class="docutils literal"><span class="pre">Database</span> <span class="pre">connection</span> <span class="pre">url</span> <span class="pre">is</span> <span class="pre">:</span> <span class="pre">jdbc:h2:tcp://10.18.0.150:56736/node</span></code></p>
|
|
<p>You can use the string on the right to connect to the h2 database: just paste it in to the <cite>JDBC URL</cite> field and click <em>Connect</em>.
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|
You will be presented with a web application that enumerates all the available tables and provides an interface for you to query them using SQL.</p>
|
|
</li>
|
|
<li><p class="first">The committed states are stored in the <code class="docutils literal"><span class="pre">NOTARY_COMMITTED_STATES</span></code> table. Note that the raw data is not human-readable,
|
|
but we’re only interested in the row count for this demo.</p>
|
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</li>
|
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</ul>
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