2 # Copyright 2019 The gRPC Authors
4 # Licensed under the Apache License, Version 2.0 (the "License");
5 # you may not use this file except in compliance with the License.
6 # You may obtain a copy of the License at
8 # http://www.apache.org/licenses/LICENSE-2.0
10 # Unless required by applicable law or agreed to in writing, software
11 # distributed under the License is distributed on an "AS IS" BASIS,
12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 # See the License for the specific language governing permissions and
14 # limitations under the License.
17 # Keeping up with Bazel's breaking changes is currently difficult.
18 # This script wraps calling bazel by downloading the currently
19 # supported version, and then calling it. This way, we can make sure
20 # that running bazel will always get meaningful results, at least
21 # until Bazel 1.0 is released.
22 # NOTE: This script relies on bazel's feature where //tools/bazel
23 # script can be used to hijack "bazel" invocations in given workspace.
27 # DISABLE_BAZEL_WRAPPER can be set to eliminate the wrapper logic
28 if [ "${DISABLE_BAZEL_WRAPPER}" != "" ]
30 if [ "${BAZEL_REAL}" != "" ]
32 # use BAZEL_REAL as set by
33 # https://github.com/bazelbuild/bazel/blob/master/scripts/packages/bazel.sh
34 # that originally invoked this script (this is what happens when you
35 # run "bazel" in our workspace)
36 exec -a "$0" "${BAZEL_REAL}" "$@"
38 # if BAZEL_REAL is not set, just invoke the default system bazel
43 # IMPORTANT: if you update the version here, other parts of infrastructure might needs updating as well
44 # (e.g. win RBE builds, sanity checks, bazel toolchains etc.)
46 echo "INFO: Running bazel wrapper (see //tools/bazel for details), bazel version $VERSION will be used instead of system-wide bazel installation." >&2
48 # update tools/update_mirror.sh to populate the mirror with new bazel archives
49 BASEURL_MIRROR="https://storage.googleapis.com/grpc-bazel-mirror/github.com/bazelbuild/bazel/releases/download"
50 BASEURL="https://github.com/bazelbuild/bazel/releases/download"
51 pushd "$(dirname "$0")" >/dev/null
65 echo "Unsupported architecture: $(uname -sm)" >&2
70 filename="bazel-$VERSION-$suffix"
72 if [ ! -x "$filename" ] ; then
73 # first try to download using mirror, fallback to download from github
74 echo "Downloading bazel, will try URLs: ${BASEURL_MIRROR}/${VERSION}/${filename} ${BASEURL}/${VERSION}/${filename}" >&2
75 curl --fail -L --output "${filename}" "${BASEURL_MIRROR}/${VERSION}/${filename}" || curl --fail -L --output "${filename}" "${BASEURL}/${VERSION}/${filename}"
80 exec "$TOOLDIR/$filename" "$@"