prometheus/scripts/goenv.sh
2015-09-18 10:28:15 +02:00

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# Copyright 2015 The Prometheus Authors
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
goroot="$1"
gopath="$2"
go_version_min="1.5"
go_version_install="1.5.1"
vernum() {
printf "%03d%03d%03d" $(echo "$1" | tr '.' ' ')
}
if command -v "go" >/dev/null; then
go_version=$(go version | sed -e 's/^[^0-9.]*\([0-9.]*\).*/\1/')
fi
# If we satisfy the version requirement, there is nothing to do. Otherwise
# proceed downloading and installing a go environment.
if [ $(vernum ${go_version}) -ge $(vernum ${go_version_min}) ]; then
return
fi
export GOPATH="${gopath}"
export GOROOT="${goroot}/${go_version_install}"
export PATH="$PATH:$GOROOT/bin"
if [ ! -x "${GOROOT}/bin/go" ]; then
mkdir -p "${GOROOT}"
os=$(uname | tr A-Z a-z)
arch=$(uname -m | sed -e 's/x86_64/amd64/' | sed -e 's/i.86/386/')
url="https://golang.org/dl"
tarball="go${go_version_install}.${os}-${arch}.tar.gz"
wget -qO- "${url}/${tarball}" | tar -C "${GOROOT}" --strip 1 -xz
fi