Add install_go.sh Kokoro test utility.

In the continuous tests, use the oldest supported minor version of Go as of the latest patch release (currently 1.16.14).

PiperOrigin-RevId: 429632365

9 files changed, 87 insertions, 12 deletions

diff --git a/kokoro/gcp_ubuntu_per_language/cross_language/run_tests.sh b/kokoro/gcp_ubuntu_per_language/cross_language/run_tests.sh
index 070d1d4c3..e3af898cc 100644
--- a/kokoro/gcp_ubuntu_per_language/cross_language/run_tests.sh
+++ b/kokoro/gcp_ubuntu_per_language/cross_language/run_tests.sh
@@ -53,6 +53,8 @@ main() {
     cd "${KOKORO_ARTIFACTS_DIR}/git/tink"
     ./kokoro/testutils/copy_credentials.sh
     ./kokoro/testutils/update_android_sdk.sh
+    # Sourcing required to update callers environment.
+    source ./kokoro/testutils/install_go.sh
   fi
   (
     cd testing/cc
diff --git a/kokoro/gcp_ubuntu_per_language/go/bazel/run_tests.sh b/kokoro/gcp_ubuntu_per_language/go/bazel/run_tests.sh
index 353428c4c..146521b63 100644
--- a/kokoro/gcp_ubuntu_per_language/go/bazel/run_tests.sh
+++ b/kokoro/gcp_ubuntu_per_language/go/bazel/run_tests.sh
@@ -19,6 +19,8 @@ set -euo pipefail
 if [[ -n "${KOKORO_ROOT}" ]]; then
   cd "${KOKORO_ARTIFACTS_DIR}/git/tink"
   ./kokoro/testutils/copy_credentials.sh
+  # Sourcing required to update callers environment.
+  source ./kokoro/testutils/install_go.sh
 fi
 
 cd go/
diff --git a/kokoro/gcp_ubuntu_per_language/go/gomod/run_tests.sh b/kokoro/gcp_ubuntu_per_language/go/gomod/run_tests.sh
index 08a419597..d6584de93 100644
--- a/kokoro/gcp_ubuntu_per_language/go/gomod/run_tests.sh
+++ b/kokoro/gcp_ubuntu_per_language/go/gomod/run_tests.sh
@@ -14,11 +14,17 @@
 # limitations under the License.
 ################################################################################
 
-
 set -euo pipefail
 
 REPO_DIR="${KOKORO_ARTIFACTS_DIR}/git/tink"
 
+(
+  cd "${REPO_DIR}"
+  ./kokoro/testutils/copy_credentials.sh
+  # Sourcing required to update callers environment.
+  source ./kokoro/testutils/install_go.sh
+)
+
 TINK_VERSION="$(cat ${REPO_DIR}/tink_version.bzl | grep ^TINK | cut -f 2 -d \")"
 
 # Create a temporary directory for performing module tests.
@@ -31,11 +37,6 @@ REPO_URL_PREFIX="github.com/google/tink"
 sudo apt-get update
 sudo apt-get upgrade -y ca-certificates
 
-(
-  cd "${REPO_DIR}"
-  ./kokoro/testutils/copy_credentials.sh
-)
-
 #######################################
 # Test an individual Go module within the Tink repository.
 # Globals:
diff --git a/kokoro/gcp_ubuntu_per_language/tools/run_tests.sh b/kokoro/gcp_ubuntu_per_language/tools/run_tests.sh
index 77e8799fb..a1c2d689a 100644
--- a/kokoro/gcp_ubuntu_per_language/tools/run_tests.sh
+++ b/kokoro/gcp_ubuntu_per_language/tools/run_tests.sh
@@ -38,6 +38,8 @@ cd ${KOKORO_ARTIFACTS_DIR}/git/tink
 
 ./kokoro/testutils/copy_credentials.sh
 ./kokoro/testutils/update_android_sdk.sh
+# Sourcing required to update callers environment.
+source ./kokoro/testutils/install_go.sh
 
 cd tools
 use_bazel.sh $(cat .bazelversion)
diff --git a/kokoro/macos_external/go/bazel/run_tests.sh b/kokoro/macos_external/go/bazel/run_tests.sh
index 353428c4c..146521b63 100644
--- a/kokoro/macos_external/go/bazel/run_tests.sh
+++ b/kokoro/macos_external/go/bazel/run_tests.sh
@@ -19,6 +19,8 @@ set -euo pipefail
 if [[ -n "${KOKORO_ROOT}" ]]; then
   cd "${KOKORO_ARTIFACTS_DIR}/git/tink"
   ./kokoro/testutils/copy_credentials.sh
+  # Sourcing required to update callers environment.
+  source ./kokoro/testutils/install_go.sh
 fi
 
 cd go/
diff --git a/kokoro/macos_external/go/gomod/run_tests.sh b/kokoro/macos_external/go/gomod/run_tests.sh
index a69cc8f08..2eeed595b 100644
--- a/kokoro/macos_external/go/gomod/run_tests.sh
+++ b/kokoro/macos_external/go/gomod/run_tests.sh
@@ -14,10 +14,15 @@
 # limitations under the License.
 ################################################################################
 
-
 set -euo pipefail
 
 REPO_DIR="${KOKORO_ARTIFACTS_DIR}/git/tink"
+(
+  cd "${REPO_DIR}"
+  ./kokoro/testutils/copy_credentials.sh
+  # Sourcing required to update callers environment.
+  source ./kokoro/testutils/install_go.sh
+)
 
 TINK_VERSION="$(cat ${REPO_DIR}/tink_version.bzl | grep ^TINK | cut -f 2 -d \")"
 
@@ -27,11 +32,6 @@ GO_MOD_DIR="${TMP_DIR}/go-mod-test"
 
 REPO_URL_PREFIX="github.com/google/tink"
 
-(
-  cd "${REPO_DIR}"
-  ./kokoro/testutils/copy_credentials.sh
-)
-
 #######################################
 # Test an individual Go module within the Tink repository.
 # Globals:
diff --git a/kokoro/macos_external/tools/run_tests.sh b/kokoro/macos_external/tools/run_tests.sh
index 32137ea6b..6fc2c3daf 100644
--- a/kokoro/macos_external/tools/run_tests.sh
+++ b/kokoro/macos_external/tools/run_tests.sh
@@ -26,6 +26,8 @@ export COURSIER_OPTS="-Djava.net.preferIPv6Addresses=true"
 cd "${KOKORO_ARTIFACTS_DIR}/git/tink"
 ./kokoro/testutils/copy_credentials.sh
 ./kokoro/testutils/update_android_sdk.sh
+# Sourcing required to update callers environment.
+source ./kokoro/testutils/install_go.sh
 
 # TODO(b/155225382): Avoid modifying the sytem Python installation.
 pip3 install --user protobuf
diff --git a/kokoro/run_tests.sh b/kokoro/run_tests.sh
index 76e39e04f..8e943ea0d 100755
--- a/kokoro/run_tests.sh
+++ b/kokoro/run_tests.sh
@@ -206,6 +206,8 @@ main() {
 
     ./kokoro/testutils/copy_credentials.sh
     ./kokoro/testutils/update_android_sdk.sh
+    # Sourcing required to update callers environment.
+    source ./kokoro/testutils/install_go.sh
   fi
 
   # Verify required environment variables.
diff --git a/kokoro/testutils/install_go.sh b/kokoro/testutils/install_go.sh
new file mode 100755
index 000000000..dda7ec28e
--- /dev/null
+++ b/kokoro/testutils/install_go.sh
@@ -0,0 +1,62 @@
+#!/bin/bash
+
+# Copyright 2022 Google LLC
+#
+# 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.
+################################################################################
+
+# This script installs a recent version of Go into a temporary directory. The Go
+# bin directory is then added to the PATH environment variable.
+#
+# NOTE: This script MUST be sourced to update the environment of the calling
+# script.
+#
+# Usage instructions:
+#
+#  source ./kokoro/testutils/install_go.sh
+
+install_temp_go() {
+  local -r go_version="1.16.14"
+
+  local -r platform="$(uname | tr '[:upper:]' '[:lower:]')"
+  local go_platform
+  case "${platform}" in
+    'linux')
+      go_platform='linux-amd64'
+      ;;
+    'darwin')
+      go_platform='darwin-amd64'
+      ;;
+    *)
+      echo "Unsupported platform, unable to install Go."
+      exit 1
+      ;;
+  esac
+  readonly go_platform
+
+  local -r go_archive="go${go_version}.${go_platform}.tar.gz"
+  local -r go_url="https://go.dev/dl/${go_archive}"
+
+  local -r go_tmpdir=$(mktemp -dt tink-go.XXXXXX)
+  (
+    cd "${go_tmpdir}"
+    curl -OLsS "${go_url}"
+    tar -xzf "${go_archive}"
+  )
+
+  export PATH="${go_tmpdir}/go/bin:${PATH}"
+}
+
+if [[ -n "${KOKORO_ROOT}" ]] ; then
+  install_temp_go
+fi