Make keygen easier for usage in scripts (#105)

.github/workflows/docker.yml

@@ -36,3 +36,14 @@ jobs:
           tags: subsquid/bootnode:${{ inputs.tag }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
+
+      - name: Build & publish keygen
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          platforms: linux/amd64,linux/arm/v7,linux/arm64/v8,linux/386
+          target: keygen
+          push: true
+          tags: subsquid/keygen:${{ inputs.tag }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

Dockerfile

@@ -49,3 +49,8 @@ ENV P2P_LISTEN_ADDRS="/ip4/0.0.0.0/udp/12345/quic-v1"
 COPY p2p_healthcheck.sh ./healthcheck.sh
 RUN chmod +x ./healthcheck.sh
 HEALTHCHECK --interval=5s CMD ./healthcheck.sh
+
+
+FROM --platform=$BUILDPLATFORM base as keygen
+COPY --from=builder /app/target/release/keygen /usr/local/bin/keygen
+ENTRYPOINT ["keygen"]

transport/src/bin/keygen.rs

@@ -1,10 +1,20 @@
-use libp2p::{identity::ed25519, PeerId};
-use std::io::Write;
+use clap::{self, command, Parser};
+use libp2p::PeerId;
+use std::path::PathBuf;
+use subsquid_network_transport::util;
 
-fn main() -> std::io::Result<()> {
-    let keypair = ed25519::Keypair::generate();
+#[derive(Parser)]
+#[command(version)]
+struct Cli {
+    /// Path to the generated key
+    filename: PathBuf,
+}
+
+#[tokio::main]
+async fn main() -> anyhow::Result<()> {
+    let filename = Cli::parse().filename;
+    let keypair = util::get_keypair(Some(filename)).await?;
     let peer_id = PeerId::from_public_key(&keypair.public().into());
-    eprintln!("Your peer ID: {peer_id}");
-    std::io::stdout().write_all(&keypair.to_bytes())?;
+    println!("{peer_id}");
     Ok(())
 }