fix(google/maps): Add post-processing rules for Google Maps APIs

PiperOrigin-RevId: 302925222

google/maps/BUILD.bazel

@@ -0,0 +1,6 @@
+package(default_visibility = ["//google/maps:__subpackages__"])
+
+sh_binary(
+    name = "postprocessing_java",
+    srcs = ["postprocessing_java.sh"],
+)

google/maps/postprocessing.bzl

@@ -0,0 +1,58 @@
+"""
+Defines the postprocessing build rule for the Google Maps APIs.
+"""
+
+def maps_assembly_pkg(name, srcs, language, visibility = None):
+    """Target to build a post-processed ads-specific GAPIC assembly package.
+
+    Explodes a GAPIC assembly package, runs language-specific post-processing, and repackages.
+
+    This macro assumes srcs contains in a single input, namely a {{language}}_assembly_pkg target
+    produced by a gapic-generator build target.
+
+    There must be a corresponding postprocessing_{language}.sh script to invoke.
+
+    Args:
+      name: defines the name of the main target
+      srcs: collection containing exactly 1 build target, namely a
+        {{language}}_assembly_pkg target produced by gapic-generator
+      language: the programming language to post-process
+        (e.g., "java", "csharp", "php", etc.); there must be a matching
+        post-processin script of the form `postprocessing_{language}.sh
+        in this package
+      visibility (optional): marco visibility setting;
+        (see https://docs.bazel.build/versions/master/skylark/macros.html)
+    """
+    cmd = """
+    set -eu
+
+    tar xzf $(SRCS);
+    $(location //google/maps:postprocessing_%s) %s;
+    tar czf $@ %s
+    """
+    dir_name = _extract_path(srcs)
+
+    native.genrule(
+        name = name,
+        srcs = srcs,
+        outs = ["%s.tar.gz" % name],
+        cmd = cmd % (language, dir_name, dir_name),
+        tools = ["//google/maps:postprocessing_%s" % language],
+        visibility = visibility,
+    )
+
+def _extract_path(srcs):
+    """Takes the first label in srcs and returns its target name.
+
+    Args:
+      srcs: a collection of build labels of the form "//package/name:target"
+
+    Returns:
+      The first element's target (i.e.- the part after the ":"), else None if empty.
+    """
+
+    for s in srcs:
+        toks = s.split(":")
+        if len(toks) == 2:
+            return toks[1]
+    return None

google/maps/postprocessing_java.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+set -eu
+
+# Performs Maps-specific post-processing on a .tar.gz archive produced by rule
+# java_gapic_assembly_gradle_pkg
+
+# Add gradle publish plugin
+#
+# Arguments:
+#   postprocess_dir: The directory that contains the Java files to postprocess.
+add_gradle_publish() {
+  postprocess_dir="${1}"
+
+  for f in $(find "${postprocess_dir}" -mindepth 2 -name build.gradle | sort); do
+    cat >> "$f" <<EOF
+
+apply from: "./publish.gradle"
+EOF
+  done
+  echo "INFO: Added gradle publish plugin."
+}
+
+# Change group name from cloud
+#
+# Arguments:
+#   postprocess_dir: The directory that contains the Java files to postprocess.
+change_group_from_cloud() {
+  postprocess_dir="${1}"
+  for f in $(find "${postprocess_dir}" -name "*.gradle" -type f); do
+    sed -e "s/= 'com\.google\.cloud'/= 'com\.google\.maps'/g" "${f}" > "${f}.new" && mv "${f}.new" "${f}"
+  done
+}
+
+# Main entry point
+#
+# Arguments:
+#   postprocess_dir: The directory that contains the Java files to postprocess.
+main() {
+  postprocess_dir="$1"
+
+  if [ "${postprocess_dir}" = "" ]; then
+    echo "postprocess_dir is required"
+    exit 1
+  fi
+
+  add_gradle_publish "${postprocess_dir}"
+  change_group_from_cloud "${postprocess_dir}"
+}
+
+main "$@"

google/maps/roads/v1op/BUILD.bazel

@@ -8,6 +8,7 @@ package(default_visibility = ["//visibility:public"])
 ##############################################################################
 load("@rules_proto//proto:defs.bzl", "proto_library")
 load("@com_google_googleapis_imports//:imports.bzl", "proto_library_with_info")
+load("//google/maps:postprocessing.bzl", "maps_assembly_pkg")
 
 proto_library(
     name = "roads_proto",
@@ -79,6 +80,12 @@ java_gapic_assembly_gradle_pkg(
     ],
 )
 
+maps_assembly_pkg(
+    name = "google-maps-roads-v1op-java-postprocess",
+    srcs = [":google-maps-roads-v1op-java"],
+    language = "java",
+)
+
 ##############################################################################
 # Go
 ##############################################################################

google/maps/routes/v1/BUILD.bazel

@@ -8,6 +8,7 @@ package(default_visibility = ["//visibility:public"])
 ##############################################################################
 load("@rules_proto//proto:defs.bzl", "proto_library")
 load("@com_google_googleapis_imports//:imports.bzl", "proto_library_with_info")
+load("//google/maps:postprocessing.bzl", "maps_assembly_pkg")
 
 proto_library(
     name = "routes_proto",
@@ -97,6 +98,12 @@ java_gapic_assembly_gradle_pkg(
     ],
 )
 
+maps_assembly_pkg(
+    name = "google-maps-routes-v1-java-postprocess",
+    srcs = [":google-maps-routes-v1-java"],
+    language = "java",
+)
+
 ##############################################################################
 # Go
 ##############################################################################