Introduction

MultiLogic is a Simplified Payment Verification (SPV) Logicoin desktop client. It is ported from the MultiBit Bitcoin client. Huge thanks to the original devs for this awesome project!

MultiLogic relies on the following technologies:

• Maven as the build system, so the usual Maven processes apply. If you're not familiar with Maven then download it first and follow their installation instructions.
• ZXing ("Zebra Crossing") for QR codes
• Logicoinj for access to the Logicoin network
• IzPack for creating installers for Windows, Mac, Linux
• Bitcoinj Enforcer Rules to prevent dependency chain attacks
• XChange for access to several Bitcoin exchanges

A note on the Logicoinj dependency

MultiLogic depends on a special fork of Logicoinj for its Bitcoin support. This is due to legacy wallet serialization issues and the MultiLogic team are working towards a complete integration. To build MultiLogic you will need to clone this fork from here:

http://github.com/logicoin/logicoinj

The branch you should use for the MultiLogic develop code is: bcj-0.10.3-mb-alice

Once cloned, you should then install the custom Logicoinj library using

mvn clean install

Branching strategy

This follows the master-develop pattern.

There are 2 main branches: master and develop. The master branch is exclusively for releases, while the develop is exclusively for release candidates. The develop branch always has a Maven version of develop-SNAPSHOT.

Every GitHub Issue gets a branch off develop. When it is complete and code reviewed it is merged into develop.

When sufficient Issues are merged into develop to justify a release, a new branch off develop is created with the release number (e.g. release-1.2.3). The Maven pom.xml is updated to reflect the snapshot version (e.g. 1.2.3-SNAPSHOT).

Once the release has been tested and is ready to go live, the final act is to update the pom.xml to remove the SNAPSHOT suffix and merge it into master.

The master branch is then tagged with the release number. Tags are in the format v1.2.3 to distinguish them from branch names.

An announcement is made on the MultiLogic website to alert everyone that a new version is available.

Maven build targets

The important targets are:

mvn clean package

which will package the MultiLogic project into multilogic-x.y.z.jar where x.y.z is the current version number. This is suitable for local development work.

If you want to generate a complete set of multi-platform installers (Windows, Mac and Linux) you use the following command

maven clean install

After some processing, you will have the following artifacts in the target directory:

• an executable jar = multilogic-exe.jar
• a Mac application bundle = MultiLogic.app
• a Mac DMG file = multilogic-x.y.z.dmg
• an installer for Windows = multilogic-x.y.z-windows.exe
• an installer for Linux = multilogic-x.y.z-linux.jar

To run MultiLogic from these artifacts you can follow the instructions provided on the main MultiLogic website](https://logicoin.info/help.html)

MultiLogic contains cut down JREs so is a large clone

The MultiLogic installers contain cut down JREs so the project clone is quite large. (100 to 200 MB).

Custom configuration

MultiLogic is quite flexible and has several features only accessible to power users through the configuration file. This is discussed in more detail in configuration.md

Contributing

If you want to contribute, please contact me at: info@logicoin.info.