chore: Update Kokoro build toolchain: run from docker, update to grpc…

… 1.36.4 and bazel 4.0.0

PiperOrigin-RevId: 370536131

.bazeliskrc

@@ -1,2 +1,2 @@
 # See https://github.com/bazelbuild/bazelisk
-USE_BAZEL_VERSION=3.0.0
+USE_BAZEL_VERSION=4.0.0

.kokoro/.bazelrc

@@ -1,2 +1 @@
-build --extra_toolchains=@gapic_generator_python//:pyenv3_toolchain --define=gapic_gen_python=3.6
-test --extra_toolchains=@gapic_generator_python//:pyenv3_toolchain --define=gapic_gen_python=3.6
+

.kokoro/Dockerfile

@@ -0,0 +1,27 @@
+FROM python:3.8
+
+RUN apt-get update
+
+RUN apt-get install -y \
+    zip \
+    build-essential \
+    python-dev \
+    python3-dev \
+    openjdk-11-jdk
+
+RUN mkdir -p /tools
+WORKDIR /tools
+RUN curl -L https://github.com/bazelbuild/bazelisk/releases/download/v1.8.0/bazelisk-linux-amd64 -o bazelisk
+RUN chmod +x bazelisk
+RUN curl -L https://github.com/bazelbuild/bazel/releases/download/4.0.0/bazel-4.0.0-linux-x86_64 -o bazel
+RUN chmod +x bazel
+WORKDIR /
+
+ENV PATH="/tools:${PATH}"
+
+ENV BAZELISK_BIN=/tools/bazelisk
+ENV BAZEL_BIN=/tools/bazelisk
+
+RUN apt-get clean
+
+ENTRYPOINT [ "/bin/bash" ]

.kokoro/build.sh

@@ -5,9 +5,6 @@ set -e
 cd ${KOKORO_ARTIFACTS_DIR}/github/googleapis
 cp .kokoro/.bazelrc $HOME/.bazelrc
 
-# shellcheck source=/dev/null
-source .kokoro/setup.sh
-
 #
 # Run build and tests
 #

.kokoro/continuous.cfg

@@ -1,3 +1,3 @@
 # Format: //devtools/kokoro/config/proto/build.proto
 
-build_file: "googleapis/.kokoro/build.sh"
+build_file: "googleapis/.kokoro/start.sh"

.kokoro/presubmit.cfg

@@ -1,3 +1,3 @@
 # Format: //devtools/kokoro/config/proto/build.proto
 
-build_file: "googleapis/.kokoro/build.sh"
+build_file: "googleapis/.kokoro/start.sh"

.kokoro/start.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+export BAZEL_ROOT=/bazel_root
+
+docker container run \
+  --env KOKORO_ROOT --env KOKORO_ARTIFACTS_DIR --env KOKORO_PIPER_DIR --env BAZEL_ROOT \
+  --volume ${KOKORO_ROOT}:${KOKORO_ROOT} \
+  --tmpfs ${BAZEL_ROOT}:exec \
+  --workdir ${KOKORO_ROOT} \
+  --ipc=host \
+  --entrypoint ${KOKORO_ARTIFACTS_DIR}/github/googleapis/.kokoro/build.sh \
+  gcr.io/gapic-images/googleapis:20210423

WORKSPACE

@@ -154,9 +154,8 @@ rules_gapic_repositories()
 
 http_archive(
     name = "com_github_grpc_grpc",
-    sha256 = "0f330e4734f49d2bfdb9ad195b021720b5dd2e2a534cdf21c7ddc7f7eb42e170",
-    strip_prefix = "grpc-1.33.1",
-    urls = ["https://github.com/grpc/grpc/archive/v1.33.1.zip"],
+    strip_prefix = "grpc-1.36.4",
+    urls = ["https://github.com/grpc/grpc/archive/v1.36.4.zip"],
 )
 
 load("@com_github_grpc_grpc//bazel:grpc_deps.bzl", "grpc_deps")
@@ -407,3 +406,4 @@ http_archive(
 load("@gapic_generator_ruby//rules_ruby_gapic:repositories.bzl", "gapic_generator_ruby_repositories")
 
 gapic_generator_ruby_repositories()
+