Implement Health API

[XavierGeerinck]

Since #322 and #268 we are now awaiting the sidecar to start before marking the continuation of the entire SDK (we block the entire app until then). Which is needed, because else we will interact with the sidecar before it is ready.

To do so, we implemented "health checks":

• gRPC: https://github.com/dapr/js-sdk/blob/main/src/implementation/Client/GRPCClient/health.ts
• HTTP: https://github.com/dapr/js-sdk/blob/main/src/implementation/Client/HTTPClient/health.ts

One thing that remained unsolved though is that we are not using the Health API as it was unsupported by gRPC at that moment.

To solve this, we should go to the Health API again for HTTP and look into gRPC with the AppCallbackHealthCheck as a potential solution

The reason to solve this is to fix the flaky tests (e.g., #555 )

[dapr-bot]

This issue has been automatically marked as stale because it has not had activity in the last 60 days. It will be closed in the next 7 days unless it is tagged (pinned, good first issue, help wanted or triaged/resolved) or other activity occurs. Thank you for your contributions.

[dapr-bot]

This issue has been automatically closed because it has not had activity in the last 67 days. If this issue is still valid, please ping a maintainer and ask them to label it as pinned, good first issue, help wanted or triaged/resolved. Thank you for your contributions.