nim-libp2p/scripts/build_p2pd.sh

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#!/bin/bash
# Copyright (c) 2018-2020 Status Research & Development GmbH. Licensed under
# either of:
# - Apache License, version 2.0
# - MIT license
# at your option. This file may not be copied, modified, or distributed except
# according to those terms.
set -e
CACHE_DIR="$1" # optional parameter pointing to a CI cache dir.
LIBP2P_COMMIT="v0.2.1" # tags work too, only used in nim-libp2p CI for now
[[ -n "$2" ]] && LIBP2P_COMMIT="$2" # allow overriding it on the command line
SUBREPO_DIR="vendor/go/src/github.com/libp2p/go-libp2p-daemon"
if [[ ! -e "$SUBREPO_DIR" ]]; then
# we're probably in nim-libp2p's CI
SUBREPO_DIR="go-libp2p-daemon"
rm -rf "$SUBREPO_DIR"
git clone -q https://github.com/libp2p/go-libp2p-daemon
cd "$SUBREPO_DIR"
git checkout -q $LIBP2P_COMMIT
cd ..
fi
## env vars
# verbosity level
[[ -z "$V" ]] && V=0
[[ -z "$BUILD_MSG" ]] && BUILD_MSG="Building p2pd ${LIBP2P_COMMIT}"
# Windows detection
if uname | grep -qiE "mingw|msys"; then
EXE_SUFFIX=".exe"
# otherwise it fails in AppVeyor due to https://github.com/git-for-windows/git/issues/2495
GIT_TIMESTAMP_ARG="--date=unix" # available since Git 2.9.4
else
EXE_SUFFIX=""
GIT_TIMESTAMP_ARG="--date=format-local:%s" # available since Git 2.7.0
fi
TARGET_DIR="$(go env GOPATH)/bin"
TARGET_BINARY="${TARGET_DIR}/p2pd${EXE_SUFFIX}"
target_needs_rebuilding() {
REBUILD=0
NO_REBUILD=1
if [[ -n "$CACHE_DIR" && -e "${CACHE_DIR}/p2pd${EXE_SUFFIX}" ]]; then
mkdir -p "${TARGET_DIR}"
cp -a "$CACHE_DIR"/* "${TARGET_DIR}/"
fi
# compare the built commit's timestamp to the date of the last commit (keep in mind that Git doesn't preserve file timestamps)
if [[ -e "${TARGET_DIR}/timestamp" && $(cat "${TARGET_DIR}/timestamp") -eq $(cd "$SUBREPO_DIR"; git log --pretty=format:%cd -n 1 ${GIT_TIMESTAMP_ARG}) ]]; then
return $NO_REBUILD
else
return $REBUILD
fi
}
build_target() {
echo -e "$BUILD_MSG"
[[ "$V" == "0" ]] && exec &>/dev/null
pushd "$SUBREPO_DIR"
# Go module downloads can fail randomly in CI VMs, so retry them a few times
MAX_RETRIES=5
CURR=0
while [[ $CURR -lt $MAX_RETRIES ]]; do
FAILED=0
go get ./... && break || FAILED=1
CURR=$(( CURR + 1 ))
echo "retry #${CURR}"
done
if [[ $FAILED == 1 ]]; then
echo "Error: still fails after retrying ${MAX_RETRIES} times."
exit 1
fi
go install ./...
# record the last commit's timestamp
git log --pretty=format:%cd -n 1 ${GIT_TIMESTAMP_ARG} > "${TARGET_DIR}/timestamp"
popd
# update the CI cache
if [[ -n "$CACHE_DIR" ]]; then
rm -rf "$CACHE_DIR"
mkdir "$CACHE_DIR"
cp -a "$TARGET_DIR"/* "$CACHE_DIR"/
fi
}
if target_needs_rebuilding; then
build_target
else
echo "No rebuild needed."
fi