chore: improve monorepo migration tooling

generation/apply_versions.sh

@@ -25,7 +25,7 @@ if [[ "$column_name" == "released" ]]; then
   column_index=2
 elif [[ "$column_name" == "current" ]]; then
   column_index=3
-elif "$column_name" != "current" ]]; then
+elif [[ "$column_name" != "current" ]]; then
   echo "Error: column_name must be either 'released' or 'current'"
   exit 1
 fi

generation/update_owlbot_postprocessor_config.sh

@@ -6,7 +6,10 @@
 
 set -e
 
-for dir in $(find . -mindepth 2 -maxdepth 2 -name owlbot.py | grep -v 'java-common-protos/' | grep -v 'java-iam/' | grep -v 'java-showcase/' | sort | xargs dirname ); do
+TARGET_MODULE="${1:-.}"
+
+for owlbot_script in $(find "$TARGET_MODULE" -name owlbot.py | grep -v 'java-common-protos/' | grep -v 'java-iam/' | grep -v 'java-showcase/' | sort); do
+  dir=$(dirname "$owlbot_script")
   pushd "$dir"
 
   # form a perl command to replace java.common_templates() invocation

java-datastore/google-cloud-datastore/pom.xml

@@ -208,12 +208,12 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-monitoring</artifactId>
-      <version>3.91.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+      <version>3.93.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
     </dependency>
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>proto-google-cloud-monitoring-v3</artifactId>
-      <version>3.91.0</version><!-- {x-version-update:google-cloud-monitoring:current} -->
+      <version>3.93.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-monitoring:current} -->
     </dependency>
     <dependency>
       <groupId>io.opentelemetry</groupId>

java-maps-mapmanagement/google-maps-mapmanagement-bom/pom.xml

@@ -8,7 +8,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-pom-parent</artifactId>
-    <version>1.85.0</version><!-- {x-version-update:google-cloud-java:current} -->
+    <version>1.86.0-SNAPSHOT</version><!-- {x-version-update:google-cloud-java:current} -->
     <relativePath>../../google-cloud-pom-parent/pom.xml</relativePath>
   </parent>
 

java-maps-mapmanagement/owlbot.py

@@ -33,6 +33,5 @@
         "java.header",
         "license-checks.xml",
         "renovate.json",
-        ".gitignore",
-    ],
-)
+        ".gitignore"
+])

monorepo-migration/.gitignore

@@ -0,0 +1,3 @@
+.git-filter-repo/
+__pycache__/
+*.pyc

monorepo-migration/migrate-bigtable.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+# Copyright 2026 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.
+
+# Exit on error
+set -e
+
+# Get absolute paths
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+MONOREPO_ROOT="$(dirname "$SCRIPT_DIR")"
+
+echo "========================================================"
+echo " Staging java-bigtable migration"
+echo "========================================================"
+
+# 1. Configure environment for the base migrate.sh script
+export SOURCE_REPO_URL="https://github.com/googleapis/java-bigtable"
+export MIGRATION_HEAD_BRANCH="main"
+export SQUASH_COMMITS="false"
+export CODEOWNER="@googleapis/bigtable-team" 
+export BOM_SUBSTITUTIONS="gapic-libraries-bom:google-cloud-monitoring-bom" 
+export PRE_INSTALL_DEPS="java-monitoring/google-cloud-monitoring-bom" 
+
+# 2. Execute the central migration script
+"${SCRIPT_DIR}/migrate.sh"
+
+echo ""
+echo "========================================================"
+echo "Migration staged successfully!"
+echo "Results are available in the isolated clone:"
+echo "  migration-work/google-cloud-java-target"
+echo "Current Branch: migrate-java-bigtable"
+echo "Next Steps: cd migration-work/google-cloud-java-target && mvn clean install -DskipTests"
+echo "========================================================"

monorepo-migration/migrate-firestore.sh

@@ -0,0 +1,43 @@
+#!/bin/bash
+# Copyright 2026 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.
+
+# Exit on error
+set -e
+
+# Get absolute paths
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+MONOREPO_ROOT="$(dirname "$SCRIPT_DIR")"
+
+echo "========================================================"
+echo " Staging java-firestore migration"
+echo "========================================================"
+
+# 1. Configure environment for the base migrate.sh script
+export SOURCE_REPO_URL="https://github.com/googleapis/java-firestore"
+export MIGRATION_HEAD_BRANCH="main"
+export SQUASH_COMMITS="false"
+export CODEOWNER="@googleapis/firestore-team" 
+
+# 2. Execute the central migration script
+"${SCRIPT_DIR}/migrate.sh"
+
+echo ""
+echo "========================================================"
+echo "Migration staged successfully!"
+echo "Results are available in the isolated clone:"
+echo "  migration-work/google-cloud-java-target"
+echo "Current Branch: migrate-java-firestore"
+echo "Next Steps: cd migration-work/google-cloud-java-target && mvn clean install -DskipTests"
+echo "========================================================"

monorepo-migration/migrate-pubsub.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+# Copyright 2026 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.
+
+# Exit on error
+set -e
+
+# Get absolute paths
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+MONOREPO_ROOT="$(dirname "$SCRIPT_DIR")"
+
+echo "========================================================"
+echo " Staging java-pubsub migration"
+echo "========================================================"
+
+# 1. Configure environment for the base migrate.sh script
+export SOURCE_REPO_URL="https://github.com/googleapis/java-pubsub"
+export MIGRATION_HEAD_BRANCH="main"
+export SQUASH_COMMITS="false"
+export CODEOWNER="@googleapis/pubsub-team" 
+
+# 2. Execute the central migration script
+# This performs git read-tree, POM modernization, workflow transformation, and generation config updates.
+# Note: migrate.sh works in an isolated sibling clone to avoid polluting the active workspace.
+"${SCRIPT_DIR}/migrate.sh"
+
+echo ""
+echo "========================================================"
+echo "Migration staged successfully!"
+echo "Results are available in the isolated clone:"
+echo "  ../../migration-work/google-cloud-java-target"
+echo "Current Branch: migrate-java-pubsub"
+echo "Next Steps: cd ../../migration-work/google-cloud-java-target && mvn clean install -DskipTests"
+echo "========================================================"