formatting.gradle

/*
 * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
 * or more contributor license agreements. Licensed under the Elastic License
 * 2.0 and the Server Side Public License, v 1; you may not use this file except
 * in compliance with, at your election, the Elastic License 2.0 or the Server
 * Side Public License, v 1.
 */

import org.elasticsearch.gradle.BuildPlugin

/*
 * This script plugin configures formatting for Java source using Spotless
 * for Gradle. Since the act of formatting existing source can interfere
 * with developers' workflows, we don't automatically format all code
 * (yet). Instead, we maintain a list of projects that are excluded from
 * formatting, until we reach a point where we can comfortably format them
 * in one go without too much disruption.
 *
 * Any new sub-projects must not be added to the exclusions list!
 *
 * To perform a reformat, run:
 *
 *     ./gradlew spotlessApply
 *
 * To check the current format, run:
 *
 *     ./gradlew spotlessJavaCheck
 *
 * This is also carried out by the `precommit` task.
 *
 * For more about Spotless, see:
 *
 * https://github.com/diffplug/spotless/tree/master/plugin-gradle
 */

// Do not add new sub-projects here!
def projectPathsToExclude = [
  ':client:benchmark',
  ':client:client-benchmark-noop-api-plugin',
  ':client:rest',
  ':client:rest-high-level',
  ':client:sniffer',
  ':client:test',
  ':example-plugins:custom-settings',
  ':example-plugins:custom-significance-heuristic',
  ':example-plugins:custom-suggester',
  ':example-plugins:painless-whitelist',
  ':example-plugins:rescore',
  ':example-plugins:rest-handler',
  ':example-plugins:script-expert-scoring',
  ':example-plugins:security-authorization-engine',
  ':libs:elasticsearch-cli',
  ':libs:elasticsearch-core',
  ':libs:elasticsearch-dissect',
  ':libs:elasticsearch-geo',
  ':libs:elasticsearch-grok',
  ':libs:elasticsearch-nio',
  ':libs:elasticsearch-plugin-classloader',
  ':libs:elasticsearch-secure-sm',
  ':libs:elasticsearch-ssl-config',
  ':libs:elasticsearch-x-content',
  ':modules:aggs-matrix-stats',
  ':modules:analysis-common',
  ':modules:ingest-common',
  ':modules:ingest-geoip',
  ':modules:ingest-user-agent',
  ':modules:lang-expression',
  ':modules:lang-mustache',
  ':modules:lang-painless',
  ':modules:lang-painless:spi',
  ':modules:mapper-extras',
  ':modules:parent-join',
  ':modules:percolator',
  ':modules:rank-eval',
  ':modules:reindex',
  ':modules:repository-url',
  ':modules:systemd',
  ':modules:tasks',
  ':modules:transport-netty4',
  ':plugins:analysis-icu',
  ':plugins:analysis-kuromoji',
  ':plugins:analysis-nori',
  ':plugins:analysis-phonetic',
  ':plugins:analysis-smartcn',
  ':plugins:analysis-stempel',
  ':plugins:analysis-ukrainian',
  ':plugins:discovery-azure-classic',
  ':plugins:discovery-ec2',
  ':plugins:discovery-gce',
  ':plugins:ingest-attachment',
  ':plugins:mapper-annotated-text',
  ':plugins:mapper-murmur3',
  ':plugins:mapper-size',
  ':plugins:repository-azure',
  ':plugins:repository-gcs',
  ':plugins:repository-hdfs',
  ':plugins:repository-s3',
  ':plugins:store-smb',
  ':plugins:transport-nio',
  ':qa:die-with-dignity',
  ':rest-api-spec',
  ':server',
  ':test:fixtures:azure-fixture',
  ':test:fixtures:gcs-fixture',
  ':test:fixtures:hdfs-fixture',
  ':test:fixtures:krb5kdc-fixture',
  ':test:fixtures:minio-fixture',
  ':test:fixtures:old-elasticsearch',
  ':test:fixtures:s3-fixture',
  ':test:framework',
  ':test:logger-usage',
  ':x-pack:license-tools',
  ':x-pack:plugin:analytics',
  ':x-pack:plugin:async-search',
  ':x-pack:plugin:async-search:qa',
  ':x-pack:plugin:ccr',
  ':x-pack:plugin:ccr:qa',
  ':x-pack:plugin:core',
  ':x-pack:plugin:deprecation',
  ':x-pack:plugin:enrich:qa:common',
  ':x-pack:plugin:eql',
  ':x-pack:plugin:eql:qa',
  ':x-pack:plugin:eql:qa:common',
  ':x-pack:plugin:frozen-indices',
  ':x-pack:plugin:graph',
  ':x-pack:plugin:identity-provider',
  ':x-pack:plugin:ilm',
  ':x-pack:plugin:mapper-constant-keyword',
  ':x-pack:plugin:mapper-flattened',
  ':x-pack:plugin:ml',
  ':x-pack:plugin:monitoring',
  ':x-pack:plugin:ql',
  ':x-pack:plugin:rollup',
  ':x-pack:plugin:search-business-rules',
  ':x-pack:plugin:security',
  ':x-pack:plugin:security:cli',
  ':x-pack:plugin:spatial',
  ':x-pack:plugin:sql',
  ':x-pack:plugin:sql:jdbc',
  ':x-pack:plugin:sql:qa',
  ':x-pack:plugin:sql:qa:security',
  ':x-pack:plugin:sql:sql-action',
  ':x-pack:plugin:sql:sql-cli',
  ':x-pack:plugin:sql:sql-client',
  ':x-pack:plugin:sql:sql-proto',
  ':x-pack:plugin:transform',
  ':x-pack:plugin:vectors',
  ':x-pack:plugin:voting-only-node',
  ':x-pack:plugin:watcher',
  ':x-pack:plugin:wildcard',
  ':x-pack:qa',
  ':x-pack:qa:security-example-spi-extension',
  ':x-pack:test:idp-fixture',
  ':x-pack:test:smb-fixture'
]

subprojects {
  plugins.withType(BuildPlugin).whenPluginAdded {
    if (projectPathsToExclude.contains(project.path) == false) {
      project.apply plugin: "com.diffplug.spotless"

      spotless {
        java {
          // Normally this isn't necessary, but we have Java sources in
          // non-standard places
          target '**/*.java'

          removeUnusedImports()
          eclipse().configFile rootProject.file('buildSrc/formatterConfig.xml')
          trimTrailingWhitespace()

          // See CONTRIBUTING.md for details of when to enabled this.
          if (System.getProperty('spotless.paddedcell') != null) {
            paddedCell()
          }
        }
      }

      tasks.named("precommit").configure {dependsOn 'spotlessJavaCheck' }
    }
  }
}