Migrate build system to gradle

[rs-eliatra]

Description

[Describe what this change achieves]
1. Category
Maintenance

2. Github Issue
#1121

3. Description of changes

• gradle script configured to cover whole build
• configuration around gradle plugins

4. Why these changes are required?
OpenSearch use Gradle to build and package OpenSearch, and also to orchestrate tests and another tasks.

Currently there is a mix inside OpenSearch Security Plugin:

• build / tests by maven
• Gradle is used to build .rpn and .deb packages
• CD script uses both: maven & gradle

5. What is the old behavior before changes and new behavior after changes?

Testing

• Unit Tests
  • ./gradlew test
• Manual Testing:

  • ./gradlew clean build testsJar --no-daemon -Dbuild.snapshot=false -x test

    The artifacts generated in build:
    * opensearch-security-1.3.0.0.jar
    * opensearch-security-1.3.0.0.jar

    The artifacts generated in build/distributions:
    * opensearch-security-1.3.0.0.zip
    * opensearch-security-1.3.0.0.zip.sha512
    * opensearch-security-1.3.1.0-securityadmin-standalone.tar.gz
    * opensearch-security-1.3.1.0-securityadmin-standalone.zip

  • Installed security plugin generated by Gradle on OpenSearch.

  • The artifacts generated by gradle were compared with artifacts generated by Maven

/comparing$ diff -q -r maven-opensearch-security-1.3.0.0-SNAPSHOT-jar gradle-opensearch-security-1.3.0.0-SNAPSHOT-jar
Files maven-opensearch-security-1.3.0.0-SNAPSHOT-jar/git.properties and gradle-opensearch-security-1.3.0.0-SNAPSHOT-jar/git.properties differ
Files maven-opensearch-security-1.3.0.0-SNAPSHOT-jar/META-INF/MANIFEST.MF and gradle-opensearch-security-1.3.0.0-SNAPSHOT-jar/META-INF/MANIFEST.MF differ
Only in maven-opensearch-security-1.3.0.0-SNAPSHOT-jar/META-INF: maven

comparing$ diff -q -r gradle-opensearch-security-1.3.0.0-SNAPSHOT-tests maven-opensearch-security-1.3.0.0-SNAPSHOT-tests
Files gradle-opensearch-security-1.3.0.0-SNAPSHOT-tests/META-INF/MANIFEST.MF and maven-opensearch-security-1.3.0.0-SNAPSHOT-tests/META-INF/MANIFEST.MF differ
Only in maven-opensearch-security-1.3.0.0-SNAPSHOT-tests/META-INF: maven

• Gradle build scan:
  • maven https://scans.gradle.com/s/bk56kbrgew4fg
  • gradle https://scans.gradle.com/s/muyjonjnpcivu

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[davidlago]

Linking #1505 as this PR also moves to Gradle 7

[dblock]

👍

[davidlago]

@rs-eliatra please address the merge conflicts and the questions in the PR and we are good to go. Thanks for the help!

[peternied]

@rs-eliatra I've retriggered the CI, it looks like there is a CVE on one of the dependencies

Path to vulnerable library: /home/wss-scanner/.gradle/caches/modules-2/files-2.1/org.springframework/spring-core/5.3.13/d2a6c3372dd337e08144f9f49f386b8ec7a8080d/spring-core-5.3.13.jar

Suggested fix

Upgrade to version: org.springframework:spring-core:5.2.19, 5.3.14

[davidlago]

@rs-eliatra guava 0.29 is still being brought in transiently:

[peternied]

Great work!

[DarshitChanpura]

Code Coverage report seems to have not been printed...we should look into it