mirror of
https://github.com/tailscale/tailscale.git
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be8a0859a9
Adds a tool/yarn helper script that uses specific versions of yarn and node, downloading them if necessary. Modeled after tool/go (and the yarn and node Redo scripts from the corp repo). Also allows the path to yarn to be overidden (in case the user does not want to use this script) and always pipes yarn output (to make debugging and viewing of process easier). Signed-off-by: Mihai Parparita <mihai@tailscale.com>
80 lines
2.1 KiB
Bash
Executable File
80 lines
2.1 KiB
Bash
Executable File
#!/bin/sh
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#
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# This script acts like the "yarn" command, but uses Tailscale's
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# currently-desired version, downloading it (and node) first if necessary.
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set -eu
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NODE_DIR="$HOME/.cache/tailscale-node"
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read -r YARN_REV < "$(dirname "$0")/yarn.rev"
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YARN_DIR="$HOME/.cache/tailscale-yarn"
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# This works for linux and darwin, which is sufficient
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# (we do not build for other targets).
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OS=$(uname -s | tr A-Z a-z)
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ARCH="$(uname -m)"
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if [ "$ARCH" = "aarch64" ]; then
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# Go uses the name "arm64".
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ARCH="arm64"
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elif [ "$ARCH" = "x86_64" ]; then
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# Go uses the name "amd64".
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ARCH="amd64"
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fi
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install_node() {
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read -r NODE_REV < "$(dirname "$0")/node.rev"
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NODE_URL="https://nodejs.org/dist/v${NODE_REV}/node-v${NODE_REV}-${OS}-${ARCH}.tar.gz"
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install_tool "node" $NODE_REV $NODE_DIR $NODE_URL
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}
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install_yarn() {
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YARN_URL="https://github.com/yarnpkg/yarn/releases/download/v$YARN_REV/yarn-v$YARN_REV.tar.gz"
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install_tool "yarn" $YARN_REV $YARN_DIR $YARN_URL
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}
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install_tool() {
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TOOL=$1
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REV=$2
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TOOLCHAIN=$3
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URL=$4
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archive="$TOOLCHAIN-$REV.tar.gz"
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mark="$TOOLCHAIN.extracted"
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extracted=
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[ ! -e "$mark" ] || read -r extracted junk <$mark
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if [ "$extracted" = "$REV" ] && [ -e "$TOOLCHAIN/bin/$TOOL" ]; then
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# Already extracted, continue silently
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return 0
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fi
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rm -f "$archive.new" "$TOOLCHAIN.extracted"
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if [ ! -e "$archive" ]; then
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log "Need to download $TOOL '$REV'."
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curl -f -L -o "$archive.new" $URL
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rm -f "$archive"
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mv "$archive.new" "$archive"
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fi
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log "Extracting $TOOL '$REV' into '$TOOLCHAIN'." >&2
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rm -rf "$TOOLCHAIN"
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mkdir -p "$TOOLCHAIN"
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(cd "$TOOLCHAIN" && tar --strip-components=1 -xf "$archive")
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echo "$REV" >$mark
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}
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log() {
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echo "$@" >&2
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}
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if [ "${YARN_REV}" = "SKIP" ] ||
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[ "${OS}" != "darwin" -a "${OS}" != "linux" ] ||
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[ "${ARCH}" != "amd64" -a "${ARCH}" != "arm64" ]; then
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log "Using existing yarn (`which yarn`)."
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exec yarn "$@"
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fi
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install_node
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install_yarn
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exec /usr/bin/env PATH="$NODE_DIR/bin:$PATH" "$YARN_DIR/bin/yarn" "$@"
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