1 create service for periodic spacewalk vault client integration tests

[gianfra-t]

Implementation

High Level Overview:

• Scheduler provides the logic for the recurrent testing process control and shutdown.
• Stellar Service class provides stellar transfer method to the testing process. A mutex is implemented so that only one transaction can go through at any point in time. This helps prevent TimeOut errors when sending multiple concurrent transactions with the same account.
• Vault Service provides request issue/redeem methods for a given vault instance and handles dispatch errors and completion events.
• Api Manager provides the polkadot/api access for a given test network and a mutex to ensure that multiple transactions for a given accountId are not executed at the same time. This prevent a nonce error. Nevertheless, the transactions are executed on the same block.
• Event Listener class is instantiated once and provides subscription access to the execute issue/redeem events using this and this method. These events can be awaited in the test logic and throw a delay error if completion_window_minutes is exceeded, terminating the test.
• Finally, Test class provides the main test logic by executing test_issuance and test_redeem for each vault/network, and provides errors handling raised during tests by sending to slack. See here

Things that will probably be left for a future issue

• Recover from unexpected shutdown while in the middle of a test run.
• Logging and retrieving test information and events.

[gianfra-t]

Hey @ebma, could you please convert this into a draft? It seems like I don't have team access to do it.

[ebma]

I actually can't because it's not available for private repos with our current Github plan. 🫥

[gianfra-t]

Ohh then no problem, it is not at all important!

[gianfra-t]

Sure!, I'm okay with those changes. As for the errors, actually I removed them because everything was going to slack, but we can add a log of whatever would be sent to slack so we can debug without creating/installing the slack app.

[ebma]

Did you use prettier for the formatting or another tool? We should add some command to the package.json that handles formatting/linting the code and maybe also configure a pre-commit hook

[gianfra-t]

I am using prettier now! (for the last commit). We could use the same hook as in the squids repo probably.

[ebma]

Yes, let's add the same hook 👍 IIRC I used option 1) described here to add it to the squid repo.

[ebma]

Merging this now as all features we wanted are ready.