Merge pull request #251 from christianbundy/add-build-script

Add build script that creates zip files

scripts/build.sh

@@ -0,0 +1,77 @@
+#!/bin/sh
+
+set -ex
+
+BASEDIR="$(dirname "$0")"
+TARGET_VERSION="12.16.1"
+
+cd "$BASEDIR/.."
+
+git clean -fdx
+
+mkdir -p vendor
+cd vendor
+
+get_tgz () {
+  TARGET_PLATFORM="$1"
+  TARGET="node-v$TARGET_VERSION-$TARGET_PLATFORM-x64"
+  ARCHIVE="$TARGET.tar.gz"
+  URL="https://nodejs.org/dist/v$TARGET_VERSION/$ARCHIVE"
+  TARGET_NODE="$TARGET/bin/node"
+
+  wget "$URL"
+  tar -xvf "$ARCHIVE" "$TARGET_NODE"
+  rm -f "$ARCHIVE"
+}
+
+get_zip () {
+  TARGET_PLATFORM="$1"
+  TARGET="node-v$TARGET_VERSION-$TARGET_PLATFORM-x64"
+  ARCHIVE="$TARGET.zip"
+  URL="https://nodejs.org/dist/v$TARGET_VERSION/$ARCHIVE"
+  TARGET_NODE="$TARGET/node.exe"
+
+  wget "$URL"
+  unzip "$ARCHIVE" "$TARGET_NODE"
+  rm -f "$ARCHIVE"
+}
+
+get_tgz darwin
+get_tgz linux
+get_zip win
+
+cd ..
+
+# Avoid building anything from source.
+npm ci --only=prod --ignore-scripts --no-audit --no-fund
+# More trouble than it's worth :)
+rm -rf ./node_modules/sharp
+
+export GOARCH="amd64"
+
+# Darwin (shell script)
+export GOOS="darwin"
+OUTFILE="oasis-$GOOS-$GOARCH"
+go build -ldflags "-X main.node=vendor/node-v$TARGET_VERSION-darwin-x64/bin/node" -o "$OUTFILE" scripts/oasis.go
+chmod +x "$OUTFILE"
+
+# Linux (ELF executable)
+export GOOS="linux"
+OUTFILE="oasis-$GOOS-$GOARCH"
+go build -ldflags "-X main.node=vendor/node-v$TARGET_VERSION-linux-x64/bin/node" -o "$OUTFILE" scripts/oasis.go
+chmod +x "$OUTFILE"
+
+# Windows (batch file)
+export GOOS="windows"
+OUTFILE="oasis-$GOOS-$GOARCH.exe"
+go build -ldflags "-X main.node=vendor\\node-v$TARGET_VERSION-win-x64\\bin\\node" -o "$OUTFILE" scripts/oasis.go
+chmod +x "$OUTFILE"
+
+# I think if the zip already exists it's adding files to the existing archive?
+ZIP_PATH="/tmp/oasis-x64.zip"
+
+rm -f "$ZIP_PATH"
+zip -r "$ZIP_PATH" . -x ".git/**"
+
+git clean -fdx
+

scripts/oasis.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+// The relative path to the `node` binary depends on the platform, so we
+// pass this via an `-ldflags` hack I don't completely understand. In my
+// head this is similar to how GCC lets you use `-D` to define a macro to
+// be inserted by the preprocessor.
+var node string
+
+func main() {
+	// The problem with relative paths is that they only work when
+	// you run `./oasis-platform-x64`, but not when you run a command
+	// like `./path/to/oasis-platform-x64`. To resolve this problem
+	// we need to put together an absolute path, which we can build
+	// with the first argument (the relative path of this executable)
+	// and the relative path of either the `node` binary or the
+	// source code directory so that we can run `node src`.
+	node := filepath.Join(filepath.Dir(os.Args[0]), node)
+	src := filepath.Join(filepath.Dir(os.Args[0]), "src")
+
+	// We know that the command will be the absolute path to `node`
+	// and the first argument will be the absolute path to the `src`
+	// directory, but we need to get collect the rest of the arguments
+	// programatically by pulling them out of the `os.Args` slice and
+	// putting them in a new slice called `args`.
+	args := []string{src}
+	for i := 1; i < len(os.Args); i++ {
+		args = append(args, os.Args[i])
+	}
+
+	// This seems to execute the script and pass-through all of the
+	// arguments we want, *plus* it hooks up stdout and stderr, but
+	// the exit code of Oasis doesn't seem to be passed through. This
+	// is easy to test with a command like:
+	//
+	//	./oasis-platform-x64 --port -1
+	//
+	// This should give an exit code of 1, but it seems to exit 0. :/
+	cmd := exec.Command(node, args...)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	// This catches problems like "no such file or directory" if the
+	// `node` variable points to a path where there isn't a binary.
+	//
+	// TODO: I think we're supposed to handle the exit code here.
+	err := cmd.Run()
+	if err != nil {
+		fmt.Println(err)
+	}
+}