* Use the attachments classloader to deserialize contract states in migrations
* Added some comments to explain serialisation behaviour and how tests work.
* Add debug log to indicate when attachment classloading has failed.
* Use a servicesForResolution to load states for compatibility with notary changes and contract upgrades
* Add test case to cover notary change transactions
* Address review comments
* Change logging message in MigrationServicesForResolution
* Read the network-parameters file if there is nothing in the database
* Update documentation and provide a warning if there are many states.
With (Contract JARs) rolling upgrades the downgrade rule cannot be effectively check as the platform can't tell the difference between a transaction that's downgrading because of an attack, vs a transaction that's downgrading because Alice has upgraded but Bob hasn't yet. During a rolling upgrade we would expect state versions to fluctuate up and down as data gets read/written by a mix of nodes. With the feature as implemented Alice will upgrade and start trading with Bob. Bob will be able to read and process the states Alice sent him, but the moment he tries to consume such a state he will fail. This will result in cascading flow deaths and a hung business network the moment an upgrade starts.
* Create a new custom migration for populating the state_party table and the relevancy_status column within the vault_states table when migrating from V3 to V4.
* Add a corresponding unit test suite.
* Small refactorings to expose data required by the migration: the isRelevant function in the NodeVaultService, and the node's legal name from the configuration.
- Delete information about hash->signature constraint migration. That
won't work for C4.0
- Rewrite parts of the api-contract-constraints.rst file to fix grammar
problems and reduce the weight of the page. Some detail isn't really
necessary at this point in the docs.
- Mention more things in the upgrade notes.
We need to have an external page which talks about UAT, as agreed with marketing this should be on docs.corda.net rather than elsewhere.
The idea is that this cannot be corda.network since UAT is part of R3, not the Foundation.
This includes all of the cash selection logic, JSON support using jackson and a bunch of utilities which are not relevant to contract verification. The exception to this are Interpolator which has been moved to the IRS demo, and PhysicalLocationStructures.kt which is now in explorer.
