Move linkage monitor check as part of Bazel build (#12980)
Fixes https://github.com/protocolbuffers/protobuf/issues/12912
Moving the Linkage Monitor check to Bazel, so that the result is cached.
Closes #12980
COPYBARA_INTEGRATE_REVIEW=https://github.com/protocolbuffers/protobuf/pull/12980 from suztomo:bazelize_linkage_monitor 51c00949badb04e7ad94c1671bdd289f939989c7
PiperOrigin-RevId: 539681611
diff --git a/java/linkage_monitor.sh b/java/linkage_monitor.sh
new file mode 100755
index 0000000..3adae2b
--- /dev/null
+++ b/java/linkage_monitor.sh
@@ -0,0 +1,38 @@
+#!/bin/bash
+
+set -e
+
+echo "Running Linkage Monitor check"
+
+echo "Maven command: $(which mvn)"
+mvn --version
+
+# This script runs within the Bazel's sandbox directory and uses protoc
+# generated within the Bazel project.
+protoc_location=$(realpath "${RUNFILES_DIR}/com_google_protobuf/protoc")
+if [ ! -x "${protoc_location}" ]; then
+ echo "${protoc_location} is not found or not executable"
+ exit 1
+fi
+
+cd java
+
+# Linkage Monitor requires the artifacts to be available in local Maven
+# repository.
+mvn --projects "bom,core,util" -e -B -Dhttps.protocols=TLSv1.2 clean generate-sources install \
+ -Dmaven.test.skip=true \
+ -Dprotobuf.basedir="../.." \
+ -Dprotoc="${protoc_location}"
+
+echo "Installed the artifacts to local Maven repository"
+
+curl -v -O "https://storage.googleapis.com/cloud-opensource-java-linkage-monitor/linkage-monitor-latest-all-deps.jar"
+
+echo "Running linkage-monitor-latest-all-deps.jar."
+
+# The generated libraries in google-cloud-shared-dependencies would detect
+# incompatible changes via Linkage Monitor
+# https://github.com/googleapis/sdk-platform-java/tree/main/java-shared-dependencies
+java -Xmx2048m -jar linkage-monitor-latest-all-deps.jar com.google.cloud:google-cloud-shared-dependencies
+
+echo "Finished running Linkage Monitor check"
