chore(prover-service): setup dockerfile and ci workflow

.github/workflows/ci.yml

@@ -0,0 +1,62 @@
+name: ci
+
+on:
+  push:
+    branches:
+      - "main"
+    tags:
+      - "v*"
+  pull_request:
+    branches:
+      - "main"
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}/prover-service
+
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a subsequent step. The `images` value provides the base name for the tags and labels.
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If the build succeeds, it pushes the image to GitHub Packages.
+      # It uses the `context` parameter to define the build's context as the set of files located in the specified path. For more information, see "[Usage](https://github.com/docker/build-push-action#usage)" in the README of the `docker/build-push-action` repository.
+      # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
+        with:
+          context: prover-service
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      # This step generates an artifact attestation for the image, which is an unforgeable statement about where and how it was built. It increases supply chain security for people who consume the image. For more information, see "[AUTOTITLE](/actions/security-guides/using-artifact-attestations-to-establish-provenance-for-builds)."
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true

README.md

@@ -6,6 +6,7 @@ A raffle system powered by SP1 zero-knowledge proofs and Galxe Raffle smart cont
 
 - `zk/`: Contains the SP1 RISC-V program and proof generation scripts.
 - `contracts/`: Contains the Raffle smart contract.
+- `prover-service/`: Contains a GRPC server for generating zero-knowledge proofs using the Prover Network.
 - `go/`: Contains the Golang bindings for the Raffle smart contract, as well as a library for running the raffle offchain.
 
 ## 🔑 ZK

prover-service/.dockerignore

@@ -0,0 +1,4 @@
+target
+Dockerfile
+.dockerignore
+.gitignore

prover-service/Cargo.toml

@@ -5,7 +5,7 @@ version = "0.0.1"
 edition = "2021"
 
 [[bin]]
-name = "prover-server"
+name = "server"
 path = "src/bin/server.rs"
 
 [dependencies]

prover-service/Dockerfile

@@ -0,0 +1,22 @@
+# Build stage
+FROM rust:1-slim as builder
+
+WORKDIR /usr/src/app
+
+RUN apt-get update && apt-get install -y \
+    libssl3 \
+    ca-certificates \
+    pkg-config \
+    libssl-dev \
+    protobuf-compiler
+
+COPY . .
+
+RUN cargo build --release
+
+# Runtime stage
+FROM debian:bookworm-slim
+
+RUN apt-get update && apt-get install -y libssl3 ca-certificates
+COPY --from=builder /usr/src/app/target/release/server /usr/local/bin/server
+CMD ["server"]

prover-service/src/lib.rs

@@ -6,6 +6,6 @@ pub mod proto {
 }
 
 pub mod service;
-
+pub mod utils;
 // Re-export common types
 pub use proto::prover::{ProofSystem, ProveRequest, ProveResponse};

prover-service/src/service.rs

@@ -8,6 +8,7 @@ use tonic::{Request, Response, Status};
 
 use crate::proto::prover::prover_service_server::ProverService;
 use crate::proto::prover::{ProofSystem, ProveRequest, ProveResponse};
+use crate::utils::hex::parse_hex_string;
 
 pub struct ProverServiceImpl {
     elf: Vec<u8>,
@@ -37,20 +38,6 @@ sol! {
     }
 }
 
-/// Parse a hex string into a 32-byte array
-fn parse_hex_string(s: &str) -> Result<[u8; 32], String> {
-    let s = s.strip_prefix("0x").unwrap_or(s);
-    if s.len() != 64 {
-        return Err("Randomness must be a 32-byte (64 character) hex string".to_string());
-    }
-
-    let bytes = hex::decode(s).map_err(|e| format!("Failed to decode hex string: {}", e))?;
-
-    bytes
-        .try_into()
-        .map_err(|_| "Failed to convert to 32 byte array".to_string())
-}
-
 #[tonic::async_trait]
 impl ProverService for ProverServiceImpl {
     async fn prove(

prover-service/src/utils/hex.rs

@@ -0,0 +1,13 @@
+/// Parse a hex string into a 32-byte array
+pub fn parse_hex_string(s: &str) -> Result<[u8; 32], String> {
+    let s = s.strip_prefix("0x").unwrap_or(s);
+    if s.len() != 64 {
+        return Err("Randomness must be a 32-byte (64 character) hex string".to_string());
+    }
+
+    let bytes = hex::decode(s).map_err(|e| format!("Failed to decode hex string: {}", e))?;
+
+    bytes
+        .try_into()
+        .map_err(|_| "Failed to convert to 32 byte array".to_string())
+}

prover-service/src/utils/mod.rs

@@ -0,0 +1 @@
+pub mod hex;