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author | Florian Klink <flokli@flokli.de> | 2023-03-23T12·49+0100 |
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committer | clbot <clbot@tvl.fyi> | 2023-03-27T08·48+0000 |
commit | 367a5e9922264b787667fd5e750c8eadf8a7796f (patch) | |
tree | dd34d886aa0cbda5668f3126870552e6002a857e /tvix/Cargo.toml | |
parent | b919f297528b74d9eab95fe93aa87541d7dffc53 (diff) |
feat(tvix/store/directorysvc): add gRPC client r/6044
This provides a GRPCDirectoryService struct implementing DirectoryService, allowing a client to Directory objects from a (remote) tvix-store. Remote in this case is anything outside the current process, be it another process, or an endpoint on the network. To keep the sync interface in the `DirectoryService` trait, a handle to some tokio runtime needs to be passed into the constructor, and the two methods use `self.tokio_handle.spawn` to start an async function, and `self.tokio_handle.block_on` to wait for its completion. The client handle, called `grpc_client` itself is easy to clone, and treats concurrent requests internally. This means, even though we keep the `DirectoryService` trait sync, there's nothing preventing it from being used concurrently, let's say from multiple threads. There's still two limitations for now: 1) The trait doesn't make use of the `recursive` request, which currently leads to a N+1 query problem. This can be fixed by `GRPCDirectoryService` having a reference to another `DirectoryService` acting as the local side. I want to wait for general store composition code to pop up before manually coding this here. 2) It's currently only possible to put() leaf directory nodes, as the request normally requires uploading a whole closure. We might want to add another batch function to upload a whole closure, and/or do this batching in certain cases. This still needs some more thinking. Change-Id: I7ffec791610b72c0960cf5307cefbb12ec946dc9 Reviewed-on: https://cl.tvl.fyi/c/depot/+/8336 Tested-by: BuildkiteCI Autosubmit: flokli <flokli@flokli.de> Reviewed-by: tazjin <tazjin@tvl.su>
Diffstat (limited to 'tvix/Cargo.toml')
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