Open
Conversation
fibonacci1729
force-pushed
the
grpc-example
branch
from
119ead0 to
35728dd
Compare
Signed-off-by: Brian Hardock <brian.hardock@fermyon.com>
fibonacci1729
force-pushed
the
grpc-example
branch
from
35728dd to
910c499
Compare
itowlson
reviewed
Apr 1, 2026
Contributor
There was a problem hiding this comment.
I wonder if this should be a sub-module of http rather than top level?
Signed-off-by: Brian Hardock <brian.hardock@fermyon.com>
fibonacci1729
force-pushed
the
grpc-example
branch
from
12d1fdc to
619f4d0
Compare
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Validated that because tonic's generated server types implement tower::Service<http::Request>, Spin's IncomingBody can be passed through directly — no body-type conversion or custom runtime needed.
Add gRPC support with tonic integration
Adds a grpc module to the Spin Rust SDK and a complete example demonstrating how to serve gRPC endpoints from a Spin component using
tonic.SDK changes
New grpc module
grpc.rsbehind the grpc feature flag — provides a grpc::serve() helper that forwards Spin's incoming HTTP request to any tower::Service, enabling tonic-generated servers to work out of the box.New grpc feature in
Cargo.tomlpulling in tower-service as a dependency.Example
examples/grpc— A Greeter service with both unary and server-streaming RPCs.Uses tonic with only codegen + prost (no hyper/tokio transport) so it compiles to wasm32-wasip2.
Includes a proto definition, build.rs for codegen, spin.toml, and a README with grpcurl test commands.