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Daniel Savu f2a0e92c7f Cosmos grpc fallbackprovider (#3139) ... ### Description Implements grpc fallback provider logic for cosmos - initially tried implementing the fallback provider deprioritization logic at middleware level like in the EVM. The difference between ethers and cosmrs is that in the latter, middleware can only live at the transport layer (`tower` crate level). - based on this github [issue](https://github.com/hyperium/tonic/issues/733), that actually doesn't look possible, because the http::Request type isn't `Clone` so it can't be submitted to multiple providers - ended up implementing the fallback provider at the application layer, by keeping an array of grpc channels - There is now a `call` method in `hyperlane_core::FallbackProvider` which I'm actually really happy with. This method handles the fallbackprovider-specific logic by taking in an async closure, running it on each provider, and iterating providers if the closure call fails. In `grpc.rs` you can see how this is slightly verbose but I think it's quite manageable. The only part that bugs me is having to duplicate `Pin::from(Box::from(future))`, but that's need afaict because the regular closure returns an anonymous type - adds `grpcUrls` and `customGrpcUrls` config items - tests the cosmos fallback provider e2e ### Drive-by changes <!-- Are there any minor or drive-by changes also included? --> ### Related issues - Fixes: https://github.com/hyperlane-xyz/issues/issues/998 ### Backward compatibility <!-- Are these changes backward compatible? Are there any infrastructure implications, e.g. changes that would prohibit deploying older commits using this infra tooling? Yes/No --> ### Testing <!-- What kind of testing have these changes undergone? None/Manual/Unit Tests -->		10 months ago
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abis	V3 agents rebase (#2746)	1 year ago
src	Cosmos grpc fallbackprovider (#3139)	10 months ago
tests	feat: sealevel merkle indexer + e2e (#3053)	12 months ago
.gitignore	Finalize rename from abacus->hyperlane (#1312)	2 years ago
Cargo.toml	Cosmos grpc fallbackprovider (#3139)	10 months ago
build.rs	Fuel Validators (#1474)	2 years ago