Remove protobuf

Signed-off-by: Maksym Pavlenko <pavlenko.maksym@gmail.com>

.devcontainer/setup.sh

@@ -24,10 +24,5 @@ script/setup/install-failpoint-binaries
 script/setup/install-gotestsum
 script/setup/install-teststat
 
-script/setup/install-protobuf \
-    && mkdir -p /go/src/usr/local/bin /go/src/usr/local/include \
-    && mv /usr/local/bin/protoc /go/src/usr/local/bin/protoc \
-    && mv /usr/local/include/google /go/src/usr/local/include/google
-
 make binaries GO_BUILD_FLAGS="-mod=vendor"
 sudo -E PATH=$PATH make install

.github/workflows/ci.yml

@@ -94,14 +94,6 @@ jobs:
           echo "GOPATH=${{ github.workspace }}" >> $GITHUB_ENV
           echo "${{ github.workspace }}/bin" >> $GITHUB_PATH
 
-      - name: Install protobuf
-        run: |
-          sudo -E PATH=$PATH script/setup/install-protobuf
-          sudo chmod +x /usr/local/bin/protoc
-          sudo chmod og+rx /usr/local/include/google /usr/local/include/google/protobuf /usr/local/include/google/protobuf/compiler
-          sudo chmod -R og+r /usr/local/include/google/protobuf/
-          protoc --version
-
       - run: script/setup/install-dev-tools
       - run: make proto-fmt
       - run: make check-protos check-api-descriptors

BUILDING.md

@@ -43,8 +43,6 @@ You need `git` to checkout the source code:
 git clone https://github.com/containerd/containerd
 ```
 
-For proper results, install the `protoc` release into `/usr/local` on your build system. When generating source code from `.proto` files, containerd may rely on some external protocol buffer files. These external dependencies should be added to the `/usr/local/include` directory. To install the appropriate version of `protoc` and download any necessary external protocol buffer files on a Linux host, run the install script located at `script/setup/install-protobuf`.
-
 To enable optional [Btrfs](https://en.wikipedia.org/wiki/Btrfs) snapshotter, you should have the headers from the Linux kernel 4.12 or later.
 The dependency on the kernel headers only affects users building containerd from source.
 Users on older kernels may opt to not compile the btrfs support (see `BUILDTAGS=no_btrfs` below),

script/setup/install-dev-tools

@@ -19,11 +19,7 @@
 #
 set -eu -o pipefail
 
-# install `protobuild` and other commands
-go install github.com/containerd/protobuild@v0.3.0
 go install github.com/containerd/protobuild/cmd/go-fix-acronym@v0.3.0
 go install github.com/cpuguy83/go-md2man/v2@v2.0.7
 go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.5
-go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.28.1
-go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.2.0
 go install github.com/containerd/ttrpc/cmd/protoc-gen-go-ttrpc@v1.2.5

script/setup/install-protobuf

@@ -1,71 +0,0 @@
-#!/usr/bin/env bash
-
-#   Copyright The containerd 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.
-
-
-#
-# Downloads and installs protobuf
-#
-set -eu -o pipefail
-
-PROTOBUF_VERSION=3.20.1
-PROTOBUF_DIR=$(mktemp -d)
-
-# Use `go tool dist list` for the full list of targets
-TARGET="$(go env GOOS)-$(go env GOARCH)"
-TARGET_ORIG=$TARGET
-
-# Fix up OS/ARCH to get proper download link for https://github.com/protocolbuffers/protobuf/releases
-
-# Darwin
-TARGET=${TARGET/darwin-amd64/osx-x86_64}
-TARGET=${TARGET/darwin-arm64/osx-aarch_64}
-
-# Windows
-TARGET=${TARGET/windows-amd64/win64}
-TARGET=${TARGET/windows-386/win32}
-
-# Linux
-TARGET=${TARGET/linux-386/linux-x86_32}
-TARGET=${TARGET/linux-amd64/linux-x86_64}
-TARGET=${TARGET/linux-arm64/linux-aarch_64}
-TARGET=${TARGET/linux-ppc64le/linux-ppcle_64}
-
-if [[ $TARGET != $TARGET_ORIG ]]
-then
-  wget -O "$PROTOBUF_DIR/protobuf" "https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOBUF_VERSION/protoc-$PROTOBUF_VERSION-$TARGET.zip"
-  unzip "$PROTOBUF_DIR/protobuf" -d /usr/local
-else
-  # Build from source
-  wget -O "$PROTOBUF_DIR/protobuf" "https://github.com/protocolbuffers/protobuf/releases/download/v$PROTOBUF_VERSION/protobuf-cpp-$PROTOBUF_VERSION.zip"
-  unzip "$PROTOBUF_DIR/protobuf" -d /usr/src/protobuf
-  cd "/usr/src/protobuf/protobuf-$PROTOBUF_VERSION"
-  ./autogen.sh
-  ./configure --disable-shared
-  make
-  make check
-  make install
-  ldconfig
-fi
-
-rm -rf "$PROTOBUF_DIR"
-
-# Download status.proto. grpc repos' one seems copied from
-# https://github.com/googleapis/googleapis/blob/master/google/rpc/status.proto,
-# but we use grpc's since the repos has tags/releases.
-mkdir -p /usr/local/include/google/rpc
-curl \
-	-L https://raw.githubusercontent.com/grpc/grpc/v1.45.2/src/proto/grpc/status/status.proto \
-	-o /usr/local/include/google/rpc/status.proto