Signed-off-by: Attila Klenik [email protected]

Moderate-sized PR to enhance the distributed worker mode and CLI UX.

Adapter changes

• The Worker.js and WorkerFactory.js files have been removed for every adapter.
• An adapterFactory.js module has been added to every adapter, that exports a factory function for the adapter.
• This factory function is the only exported object of the adapter packages
• The adapters only receive the worker index for the factory. Retrieval of the configuration files is done inside the adapter (could be moved outside a layer for easier testing).

Fabric adapter fix

• Fixed the workerInit flag usage in the init adapter methods
• Bumped SDK versions to 1.4.7

Docker build improvements

• Different tag possibility for docker image, not just the unique version (convenient for local testing)
• Caliper is now installed globally in the image, using a nice entry point/cmd pattern (defaulting to "caliper --version", could be changed)

General updates

• A common mechanism for loading arbitrary factory functions from any module (the basis of the envisioned plugin mechanism)
• The process/worker life-cycle has been improved a bit to prevent hanging workers after rounds (or early exits due to CLI termination)
• The MQTT connection is now cleaned up (messenger.dispose) at the end of the benchmark (a unified resource life-cycle management would be good for every object type, like adapters, monitors, etc)
• The network config path is no longer saved in the BlockchainInterface base class (pointless restriction)
• Error stacks are also printed along with the error message (we need to unify this along with the other logging todo)

CLI updates

• Binding SUT and SDK params are merged (e.g., fabric:1.4.7)
• Common "launch" command for starting "master" and "worker" processes
• If the binding specification is set, then the launch commands perform the binding automatically (except for spawned worker processes)
• The "launch worker" command now contains the previous Worker.js content in a unified way.
• Adapters are now instantiated through the new factory functions (and the previous worker factories have been removed from the different orchestrators)

Worker management updates

• Workers are now spawned through the unified CLI command
• Explicit exit message upon finishing all rounds

CI tests

• Updated the CLI commands
• Created fully Docker-based non-CI tests for easily checking local changes in complex scenarios:
  • A Fabric test, using locally spawned workers.
  • A Fabric test, using distributed workers.