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Microservices Application Pattern
Please see the example applications developed by Chris Richardson. These examples on Github illustrate various aspects of the microservice architecture.
Resulting Context
Benefits
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- define multi-step transaction types
- create transaction instance using the shared transaction manager with workflow from the contract config for that transaction type
- each transaction has a unique ID
- set the parties who validate the transaction on each ledger
- contract takes control over both assets from each party using locks and confirms locks ( if funds or asset limited, policy may allow partial transactions )
- obligation set for each asset in the contract locking a portion of the assets for a time period
- after lock done, the lock status for all assets in the contract is shared
- if all assets in the contract locked, next step executes ( normally the trade )
- funds transferred to new party, assets transferred to new party
- after delivery completed, obligations removed
- after each step, the contract instance is updated for both parties and confirmed
- signatures and consents required by all parties for each step
- state changes are validated as complete on each ledger for the current step before moving to next step - 100% endorsement of each update by relevant parties
- if completion criteria for a step not fulfilled by X time, the transaction is cancelled and all parties are restored to initial states
- completion messages recorded and events published on success or failure of the transaction
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