kredits/contracts
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update readme

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bumi 2018-03-14 23:26:30 +01:00
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@ -60,7 +60,9 @@ Some of the contracts use upgradability ideas from [zeppelinos](https://github.c
The basic idea is to have a Registry contract that knows about the current implementations and a Proxy contract that uses `delegatecall` to call the current implementation. The basic idea is to have a Registry contract that knows about the current implementations and a Proxy contract that uses `delegatecall` to call the current implementation.
That means the Proxy contract holds the storage and the address of that one does not change but the actuall implemenation is managed through the Registry. That means the Proxy contract holds the storage and the address of that one does not change but the actuall implemenation is managed through the Registry.
To deploy a new version a new contract is deployed then the version is registered (`addVersion()`) in the Registry and on the Proxy contract is "upgraded" (`upgradeTo()`) to the new version. To deploy a new version a new contract is deployed then the version is registered (`addVersion()`) in the Registry and on the Proxy contract is "upgraded" (`upgrade()`) to the new version.
The Registry knows about all the different contracts and implementations. Versions are stored as uint and automatically incremented for every added implementation.
### Example: ### Example:
@ -71,14 +73,14 @@ Deployment is best done using the [truffle deployer]()
1. deploy the Registry 1. deploy the Registry
2. deploy the contract 2. deploy the contract
3. register the contract at the Registry: 3. register the contract at the Registry:
`registry.addVersion('Token_1.0', Token.address)` `registry.addVersion('Token', Token.address)`
4. create the Proxy: 4. create the Proxy:
`registry.createProxy('Token_1.0')` `registry.createProxy('Token', 1)`
2. Update 2. Update
1. deploy a new Version of the contract 1. deploy a new Version of the contract
2. register the new version at the Registry: 2. register the new version at the Registry:
`registry.addVersion('Token_2.0', NewToken.address)` `registry.addVersion('Token', NewToken.address)`
3. set the new implementation address on the Proxy contract: 3. set the new implementation address on the Proxy contract:
`proxy.upgradeTo('Token_2.0')` `registry.upgrade('Token', 2)`