Investigate moving Sync off of `google-cloud-rust` crate and on to a more modern equivalent.

[data-sync-user]

The current rust crate to talk to GCP was created quite a while ago and uses a now abandoned dependency at its core. This means that no further support for this library is likely. (It’s also a significant cost to maintain and support.)

We should consider transitioning off of using google-cloud-rust in favor of a more supported, easier to use crate.

Work should include:

• Identifying candidate crates, and selecting one with the best, foreseeable future.
• Updating the syncstorage-spanner crate to use the new library while maintaining the current level of database abstraction
• Working with the Push team to identify and coordinate transition so that they’re not left holding the bag
• Archiving the google-cloud-rust crate so that no further work is done.

┆Issue is synchronized with this Jira Task

[data-sync-user]

➤ Philip Jenvey commented:

We should migrate to the official Google Cloud SDK for Rust which was recently released: https://github.com/googleapis/google-cloud-rust ( https://github.com/googleapis/google-cloud-rust|smart-link )

However per its release announcement: (Note: Services like Compute Engine, BigQuery, Spanner, Bigtable, Pub/Sub, Firestore, and Datastore will be added in future updates)