Adding Routers and Components - Step by Step Guide

Adding new routers and components to a Node must be done in the correct order. The following constraints apply:

1. A Node Owner cannot add a Router that is not whitelisted at the protocol level

2. A Node Owner cannot add a component unless both:

   1. The component is whitelisted on a Router by the RegistryOwner

   2. This specific Router has already been added to the Node by the owner

1. Protocol Owner Actions

// Must happen first - whitelist router at protocol level
registry.setRegistryType(routerAddress, RegistryType.ROUTER, true);

2. Registry Owner Actions

// Whitelist component on specific router
router.setWhitelistStatus(componentAddress, true);

3. Node Owner Actions

// First add router to node
node.addRouter(routerAddress);

// Then add component that uses that router
node.addComponent(
    componentAddress,    // component address
    targetWeight,       // e.g., 0.7 ether for 70%
    maxDelta,          // acceptable deviation
    routerAddress      // must match router added above
);

If steps are performed out of order:

• Adding component before router: Reverts with RouterNotApproved

• Adding component before router whitelist: Reverts with NotWhitelisted

• Adding router before protocol whitelist: Reverts with NotWhitelisted

• Adding component before component whitelist: Reverts with NotWhitelisted