#!/usr/bin/env bash

# Copyright 2023 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.

# Build the Java library from Protobuf source:

# https://github.com/googleapis/google-cloudevents

set -e # Must be set for script to fail

if [[ -z "${DATA_SOURCE_PATH}" ]]

then

echo "Use \$DATA_SOURCE_PATH to set the location of the google-cloudevents repo."

exit 1

fi

# Set Data Source Path ($DATA_SOURCE_PATH should be set to google-cloudevents repo)

PROTOBUF_SRC="${DATA_SOURCE_PATH}/proto"

THIRDPARTY="${DATA_SOURCE_PATH}/third_party/googleapis"

# Set Library Path

LIBRARY_SRC="google-cloudevent-types"

PROTOC_OUT="${LIBRARY_SRC}/src/main/java/"

TEST_GEN_OUT="${LIBRARY_SRC}/src/test/java/"

# Set protoc Path

PROTOC_PATH="${PROTOC_PATH:-protoc}"

# Clean up previously generated files

rm -rf $PROTOC_OUT

mkdir -p $PROTOC_OUT

rm -rf $TEST_GEN_OUT

mkdir -p $TEST_GEN_OUT

# Set sed options for Ubuntu vs MacOs

SED="sed -i"

# Ensure clean source for local builds

BUILD_LOCALLY="${BUILD_LOCALLY:-false}"

if [[ "$BUILD_LOCALLY" == "true" ]]; then

SED="sed -i .bak"

current=$(pwd)

cd "$DATA_SOURCE_PATH"

git restore --staged "$PROTOBUF_SRC" "$THIRDPARTY"

git restore "$PROTOBUF_SRC" "$THIRDPARTY"

git clean -f

cd "$current"

fi

# Assemble protoc plugin to generate tests

mvn clean package assembly:single -f protoc-gen-java-snowpea/

# Setup monitored resource proto with Java options

MonitoredResourceProto=$(find "$THIRDPARTY" -name "monitored_resource.proto")

{

echo -en "\noption java_multiple_files = true;"

echo -en "\noption java_outer_classname = \"MonitoredResourceProto\";"

echo -en "\noption java_package = \"com.google.api\";"

} >> "$MonitoredResourceProto"

echo

echo "########################################################"

for proto_src in $(find "${PROTOBUF_SRC}" -type f -name data.proto); do

echo

echo "# Generating proto bindings - ${proto_src}"

# Comment out preset Java options

$SED 's/option java/\/\/option java/' "$proto_src"

# Set Java option: multiple files

echo -en "\noption java_multiple_files = true;" >> "$proto_src"

# Set Java option: package name

awk '/^package/,/;/' "$proto_src" > PROTO_PACKAGE; # Ex. package google.events.cloud.pubsub.v1; => google.events.cloud.pubsub.v1

$SED 's/package /option java_package = \"com./' PROTO_PACKAGE

$SED 's/;/"/' PROTO_PACKAGE

echo -en "\n$(cat PROTO_PACKAGE);" >> "$proto_src"

$PROTOC_PATH \

-I="$PROTOBUF_SRC" \

-I="$THIRDPARTY" \

--java_out=$PROTOC_OUT \

"$proto_src"

done

echo

echo "########################################################"

for proto_src in $(find "${PROTOBUF_SRC}" -type f -name events.proto); do

echo

echo "# Generating validation tests - ${proto_src}"

# Note: --java-snowpea_opt is a list tests to skip due to imcompatibility

$PROTOC_PATH \

--plugin=protoc-gen-java-snowpea=protoc-gen-java-snowpea/startup-script.sh \

--java-snowpea_out $TEST_GEN_OUT \

--java-snowpea_opt "MessagePublishedData,LogEntryData#strict" \

-I "$PROTOBUF_SRC" \

-I "$THIRDPARTY" \

--experimental_allow_proto3_optional \

"$proto_src"

done

YEAR=$(date +'%Y')

LICENSE="/\*\n \* Copyright $YEAR Google LLC\n \*\n \* Licensed under the Apache License, Version 2.0 (the \"License\");\n \* you may not use this file except in compliance with the License.\n \* You may obtain a copy of the License at\n \*\n \* https://www.apache.org/licenses/LICENSE-2.0\n \*\n \* Unless required by applicable law or agreed to in writing, software\n \* distributed under the License is distributed on an \"AS IS\" BASIS,\n \* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n \* See the License for the specific language governing permissions and\n \* limitations under the License.\n \*/"

FILE_HEAD="// Generated by the protocol buffer compiler."

echo

echo "########################################################"

for i in $(find "${PROTOC_OUT}" -type f -name "*.java"); do

echo "# Generating license header - ${i}"

$SED "s|$FILE_HEAD|$LICENSE\n$FILE_HEAD|" "$i"

done

echo

echo "########################################################"

echo "# Formatting generated code files..."

mvn com.spotify.fmt:fmt-maven-plugin:format -f google-cloudevent-types

echo

echo "########################################################"

echo "# Running library tests..."

mvn verify

# echo

# echo "########################################################"

# echo "# Running sample tests..."

# mvn install -DskipTests

# mvn verify -f samples/gcf

# mvn verify -f samples/springboot

# mvn verify -f samples/springboot-proto