Add sample Go FFI bindings for freezer reads

.github/workflows/ci.yaml

@@ -14,6 +14,10 @@ jobs:
           toolchain: stable
           profile: minimal
           override: true
+      - name: Install Golang toolchain
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.21
       - uses: Swatinem/rust-cache@v1
         with:
           cache-on-failure: true
@@ -32,6 +36,10 @@ jobs:
           profile: minimal
           components: rustfmt, clippy
           override: true
+      - name: Install Golang toolchain
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.21
       - uses: Swatinem/rust-cache@v1
         with:
           cache-on-failure: true
@@ -52,6 +60,10 @@ jobs:
           toolchain: stable
           profile: minimal
           override: true
+      - name: Install Golang toolchain
+        uses: actions/setup-go@v4
+        with:
+          go-version: 1.21
       - uses: Swatinem/rust-cache@v1
         with:
           cache-on-failure: true

crates/db-utils/build.rs

@@ -0,0 +1,24 @@
+use std::env;
+use std::path::PathBuf;
+use std::process::Command;
+
+fn main() {
+    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+
+    let mut go_build = Command::new("go");
+    go_build
+        .arg("build")
+        .arg("-buildmode=c-archive")
+        .arg("-o")
+        .arg(out_path.join("libfreezer.a"))
+        .arg("./geth-bind/freezer.go");
+
+    go_build.status().expect("Go build failed");
+
+    println!("cargo:rerun-if-changed=./geth-bind/freezer.go");
+    println!(
+        "cargo:rustc-link-search=native={}",
+        out_path.to_str().unwrap()
+    );
+    println!("cargo:rustc-link-lib=static=freezer");
+}

crates/db-utils/geth-bind/.gitignore

@@ -0,0 +1,2 @@
+# Go output
+out/

crates/db-utils/geth-bind/Makefile

@@ -0,0 +1,2 @@
+all:
+	go build -buildmode=c-archive -o out/libfreezer.so

crates/db-utils/geth-bind/freezer.go

@@ -0,0 +1,23 @@
+package main
+
+/*
+#include <stdlib.h>
+*/
+import "C"
+import "unsafe"
+
+// import (
+// 	"github.com/ethereum/go-ethereum/core/rawdb"
+// )
+
+//export FetchReceipts
+func FetchReceipts() *C.char {
+	return C.CString("hi from the freezer")
+}
+
+//export GoFree
+func GoFree(ptr *C.char) {
+	C.free(unsafe.Pointer(ptr))
+}
+
+func main() {}

crates/db-utils/geth-bind/go.mod

@@ -0,0 +1,57 @@
+module anton.systems/geth-freezer-bindings
+
+go 1.21.4
+
+require github.com/ethereum/go-ethereum v1.13.5
+
+require (
+	github.com/DataDog/zstd v1.4.5 // indirect
+	github.com/StackExchange/wmi v1.2.1 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/bits-and-blooms/bitset v1.7.0 // indirect
+	github.com/btcsuite/btcd/btcec/v2 v2.2.0 // indirect
+	github.com/cespare/xxhash/v2 v2.2.0 // indirect
+	github.com/cockroachdb/errors v1.8.1 // indirect
+	github.com/cockroachdb/logtags v0.0.0-20190617123548-eb05cc24525f // indirect
+	github.com/cockroachdb/pebble v0.0.0-20230928194634-aa077af62593 // indirect
+	github.com/cockroachdb/redact v1.0.8 // indirect
+	github.com/cockroachdb/sentry-go v0.6.1-cockroachdb.2 // indirect
+	github.com/cockroachdb/tokenbucket v0.0.0-20230807174530-cc333fc44b06 // indirect
+	github.com/consensys/bavard v0.1.13 // indirect
+	github.com/consensys/gnark-crypto v0.12.1 // indirect
+	github.com/crate-crypto/go-kzg-4844 v0.7.0 // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.0.1 // indirect
+	github.com/ethereum/c-kzg-4844 v0.4.0 // indirect
+	github.com/go-ole/go-ole v1.2.5 // indirect
+	github.com/go-stack/stack v1.8.1 // indirect
+	github.com/gofrs/flock v0.8.1 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/golang/snappy v0.0.5-0.20220116011046-fa5810519dcb // indirect
+	github.com/holiman/uint256 v1.2.3 // indirect
+	github.com/klauspost/compress v1.15.15 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/mattn/go-runewidth v0.0.13 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/mmcloughlin/addchain v0.4.0 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_golang v1.12.0 // indirect
+	github.com/prometheus/client_model v0.2.1-0.20210607210712-147c58e9608a // indirect
+	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/rogpeppe/go-internal v1.9.0 // indirect
+	github.com/shirou/gopsutil v3.21.4-0.20210419000835-c7a38de76ee5+incompatible // indirect
+	github.com/supranational/blst v0.3.11 // indirect
+	github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7 // indirect
+	github.com/tklauser/go-sysconf v0.3.12 // indirect
+	github.com/tklauser/numcpus v0.6.1 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/exp v0.0.0-20230905200255-921286631fa9 // indirect
+	golang.org/x/sync v0.3.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	google.golang.org/protobuf v1.27.1 // indirect
+	rsc.io/tmplfunc v0.0.3 // indirect
+)