2018-07-27 15:50:53 +00:00
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Corda Network Builder
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=====================
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.. contents::
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The Corda Network Builder is a tool for building Corda networks for testing purposes. It leverages Docker and
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containers to abstract the complexity of managing a distributed network away from the user.
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2018-12-19 16:12:20 +00:00
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.. image:: _static/images/network-builder-v4.png
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2018-07-27 15:50:53 +00:00
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2018-12-19 16:12:20 +00:00
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The network you build will either be made up of local ``docker`` nodes *or* of nodes spread across Azure
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containers. More backends may be added in future. The tool is open source, so contributions to add more
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destinations for the containers are welcome!
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`Download the Corda Network Builder <https://ci-artifactory.corda.r3cev.com/artifactory/corda-releases/net/corda/corda-network-builder/4.0-corda/corda-network-builder-4.0-corda-executable.jar>`_.
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2018-07-27 15:50:53 +00:00
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.. _pre-requisites:
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Prerequisites
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-------------
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* **Docker:** docker > 17.12.0-ce
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* **Azure:** authenticated az-cli >= 2.0 (see: https://docs.microsoft.com/en-us/cli/azure/install-azure-cli?view=azure-cli-latest)
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.. _creating_the_base_nodes:
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Creating the base nodes
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-----------------------
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The network builder uses a set of nodes as the base for all other operations. A node is anything that satisfies
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the following layout:
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.. sourcecode:: shell
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-
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-- node.conf
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-- corda.jar
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-- cordapps/
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An easy way to build a valid set of nodes is by running ``deployNodes``. In this document, we will be using
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the output of running ``deployNodes`` for the `Example CorDapp <https://github.com/corda/cordapp-example>`_:
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1. ``git clone https://github.com/corda/cordapp-example``
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2. ``cd cordapp-example``
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3. ``./gradlew clean deployNodes``
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Building a network via the command line
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---------------------------------------
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Starting the nodes
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^^^^^^^^^^^^^^^^^^
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Quickstart Local Docker
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~~~~~~~~~~~~~~~~~~~~~~~
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1. ``cd kotlin-source/build/nodes``
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2. ``java -jar <path/to/network-builder-jar> -d .``
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If you run ``docker ps`` to see the running containers, the following output should be displayed:
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.. sourcecode:: shell
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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406868b4ba69 node-partyc:corda-network "/run-corda.sh" 17 seconds ago Up 16 seconds 0.0.0.0:32902->10003/tcp, 0.0.0.0:32895->10005/tcp, 0.0.0.0:32898->10020/tcp, 0.0.0.0:32900->12222/tcp partyc0
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4546a2fa8de7 node-partyb:corda-network "/run-corda.sh" 17 seconds ago Up 17 seconds 0.0.0.0:32896->10003/tcp, 0.0.0.0:32899->10005/tcp, 0.0.0.0:32901->10020/tcp, 0.0.0.0:32903->12222/tcp partyb0
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c8c44c515bdb node-partya:corda-network "/run-corda.sh" 17 seconds ago Up 17 seconds 0.0.0.0:32894->10003/tcp, 0.0.0.0:32897->10005/tcp, 0.0.0.0:32892->10020/tcp, 0.0.0.0:32893->12222/tcp partya0
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cf7ab689f493 node-notary:corda-network "/run-corda.sh" 30 seconds ago Up 31 seconds 0.0.0.0:32888->10003/tcp, 0.0.0.0:32889->10005/tcp, 0.0.0.0:32890->10020/tcp, 0.0.0.0:32891->12222/tcp notary0
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Quickstart Remote Azure
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~~~~~~~~~~~~~~~~~~~~~~~
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1. ``cd kotlin-source/build/nodes``
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2. ``java -jar <path/to/network-builder-jar> -b AZURE -d .``
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.. note:: The Azure configuration is handled by the az-cli utility. See the :ref:`pre-requisites`.
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.. _interacting_with_the_nodes:
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Interacting with the nodes
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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You can interact with the nodes by SSHing into them on the port that is mapped to 12222. For example, to SSH into the
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``partya0`` node, you would run:
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.. sourcecode:: shell
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ssh user1@localhost -p 32893
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Password authentication
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Password:
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Welcome to the Corda interactive shell.
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Useful commands include 'help' to see what is available, and 'bye' to shut down the node.
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>>> run networkMapSnapshot
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[
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{ "addresses" : [ "partya0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyA, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701330613 },
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{ "addresses" : [ "notary0:10020" ], "legalIdentitiesAndCerts" : [ "O=Notary, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701305115 },
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{ "addresses" : [ "partyc0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyC, L=Paris, C=FR" ], "platformVersion" : 3, "serial" : 1532701331608 },
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{ "addresses" : [ "partyb0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyB, L=New York, C=US" ], "platformVersion" : 3, "serial" : 1532701330118 }
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]
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>>>
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Adding additional nodes
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^^^^^^^^^^^^^^^^^^^^^^^
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It is possible to add additional nodes to the network by reusing the nodes you built earlier. For example, to add a
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node by reusing the existing ``PartyA`` node, you would run:
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``java -jar <network-builder-jar> --add "PartyA=O=PartyZ,L=London,C=GB"``
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To confirm the node has been started correctly, run the following in the previously connected SSH session:
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.. sourcecode:: shell
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Tue Jul 17 15:47:14 GMT 2018>>> run networkMapSnapshot
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[
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{ "addresses" : [ "partya0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyA, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701330613 },
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{ "addresses" : [ "notary0:10020" ], "legalIdentitiesAndCerts" : [ "O=Notary, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701305115 },
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{ "addresses" : [ "partyc0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyC, L=Paris, C=FR" ], "platformVersion" : 3, "serial" : 1532701331608 },
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{ "addresses" : [ "partyb0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyB, L=New York, C=US" ], "platformVersion" : 3, "serial" : 1532701330118 },
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{ "addresses" : [ "partya1:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyZ, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701630861 }
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]
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Building a network in Graphical User Mode
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-----------------------------------------
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The Corda Network Builder also provides a GUI for when automated interactions are not required. To launch it, run
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``java -jar <path/to/network-builder-jar> -g``.
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Starting the nodes
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^^^^^^^^^^^^^^^^^^
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1. Click ``Open nodes ...`` and select the folder where you built your nodes in :ref:`creating_the_base_nodes` and
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click ``Open``
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2. Select ``Local Docker`` or ``Azure``
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3. Click ``Build``
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.. note:: The Azure configuration is handled by the az-cli utility. See the :ref:`pre-requisites`.
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All the nodes should eventually move to a ``Status`` of ``INSTANTIATED``. If you run ``docker ps`` from the terminal to
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see the running containers, the following output should be displayed:
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.. sourcecode:: shell
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CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
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406868b4ba69 node-partyc:corda-network "/run-corda.sh" 17 seconds ago Up 16 seconds 0.0.0.0:32902->10003/tcp, 0.0.0.0:32895->10005/tcp, 0.0.0.0:32898->10020/tcp, 0.0.0.0:32900->12222/tcp partyc0
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4546a2fa8de7 node-partyb:corda-network "/run-corda.sh" 17 seconds ago Up 17 seconds 0.0.0.0:32896->10003/tcp, 0.0.0.0:32899->10005/tcp, 0.0.0.0:32901->10020/tcp, 0.0.0.0:32903->12222/tcp partyb0
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c8c44c515bdb node-partya:corda-network "/run-corda.sh" 17 seconds ago Up 17 seconds 0.0.0.0:32894->10003/tcp, 0.0.0.0:32897->10005/tcp, 0.0.0.0:32892->10020/tcp, 0.0.0.0:32893->12222/tcp partya0
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cf7ab689f493 node-notary:corda-network "/run-corda.sh" 30 seconds ago Up 31 seconds 0.0.0.0:32888->10003/tcp, 0.0.0.0:32889->10005/tcp, 0.0.0.0:32890->10020/tcp, 0.0.0.0:32891->12222/tcp notary0
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Interacting with the nodes
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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See :ref:`interacting_with_the_nodes`.
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Adding additional nodes
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^^^^^^^^^^^^^^^^^^^^^^^
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It is possible to add additional nodes to the network by reusing the nodes you built earlier. For example, to add a
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node by reusing the existing ``PartyA`` node, you would:
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1. Select ``partya`` in the dropdown
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2. Click ``Add Instance``
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3. Specify the new node's X500 name and click ``OK``
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If you click on ``partya`` in the pane, you should see an additional instance listed in the sidebar. To confirm the
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node has been started correctly, run the following in the previously connected SSH session:
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.. sourcecode:: shell
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Tue Jul 17 15:47:14 GMT 2018>>> run networkMapSnapshot
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[
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{ "addresses" : [ "partya0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyA, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701330613 },
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{ "addresses" : [ "notary0:10020" ], "legalIdentitiesAndCerts" : [ "O=Notary, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701305115 },
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{ "addresses" : [ "partyc0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyC, L=Paris, C=FR" ], "platformVersion" : 3, "serial" : 1532701331608 },
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{ "addresses" : [ "partyb0:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyB, L=New York, C=US" ], "platformVersion" : 3, "serial" : 1532701330118 },
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{ "addresses" : [ "partya1:10020" ], "legalIdentitiesAndCerts" : [ "O=PartyZ, L=London, C=GB" ], "platformVersion" : 3, "serial" : 1532701630861 }
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]
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Shutting down the nodes
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-----------------------
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Run ``docker kill $(docker ps -q)`` to kill all running Docker processes.
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