├── settings.gradle
├── assets
    └── project.png
├── gradle
    └── wrapper
    │   ├── gradle-wrapper.jar
    │   └── gradle-wrapper.properties
├── .gitignore
├── change_tracker
    ├── src
    │   └── main
    │   │   ├── resources
    │   │       └── META-INF
    │   │       │   └── gradle-plugins
    │   │       │       └── com.ismaeldivita.changetracker.properties
    │   │   └── kotlin
    │   │       └── com
    │   │           └── ismaeldivita
    │   │               └── changetracker
    │   │                   ├── util
    │   │                       ├── Constants.kt
    │   │                       ├── TaskExtensions.kt
    │   │                       └── ProjectExtensions.kt
    │   │                   ├── ChangeTrackerExtension.kt
    │   │                   ├── project
    │   │                       ├── ProjectLocator.kt
    │   │                       └── ProjectDependents.kt
    │   │                   ├── ChangeTrackerPlugin.kt
    │   │                   ├── ChangedModulesTask.kt
    │   │                   └── git
    │   │                       └── JGitClient.kt
    └── build.gradle
├── gradle.properties
├── LICENSE
├── gradlew.bat
├── README.md
└── gradlew


/settings.gradle:
--------------------------------------------------------------------------------
1 | include ':change_tracker'
2 | 


--------------------------------------------------------------------------------
/assets/project.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/ismaeldivita/change-tracker-plugin/HEAD/assets/project.png


--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.jar:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/ismaeldivita/change-tracker-plugin/HEAD/gradle/wrapper/gradle-wrapper.jar


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea
5 | .DS_Store
6 | /build
7 | /captures
8 | .externalNativeBuild
9 | /change_tracker/build


--------------------------------------------------------------------------------
/change_tracker/src/main/resources/META-INF/gradle-plugins/com.ismaeldivita.changetracker.properties:
--------------------------------------------------------------------------------
1 | implementation-class=com.ismaeldivita.changetracker.ChangeTrackerPlugin


--------------------------------------------------------------------------------
/gradle/wrapper/gradle-wrapper.properties:
--------------------------------------------------------------------------------
1 | #Tue Jun 11 17:44:45 EEST 2019
2 | distributionBase=GRADLE_USER_HOME
3 | distributionPath=wrapper/dists
4 | zipStoreBase=GRADLE_USER_HOME
5 | zipStorePath=wrapper/dists
6 | distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
7 | debug=true


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/util/Constants.kt:
--------------------------------------------------------------------------------
1 | package com.ismaeldivita.changetracker.util
2 | 
3 | const val CHANGED_TRACKER_MODULES_TASK_NAME = "changedModules"
4 | const val CHANGED_TRACKER_GROUP_NAME = "change tracker"
5 | const val CHANGED_TRACKER_OUTPUT = "changedTracker_output"
6 | const val CHANGE_TRACKER_EXTENSION = "changeTracker"
7 | 
8 | 
9 | 


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/util/TaskExtensions.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker.util
 2 | 
 3 | import com.ismaeldivita.changetracker.ChangeTrackerExtension
 4 | import org.gradle.api.Project
 5 | import org.gradle.api.Task
 6 | 
 7 | val Task.rootProject: Project get() = project.rootProject
 8 | 
 9 | val Task.changeTrackerExtension: ChangeTrackerExtension
10 |     get() = project.changeTrackerExtension
11 | 
12 | @Suppress("UNCHECKED_CAST")
13 | fun <T> Task.getProperty(key: String): T? = project.properties[key] as T?


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/ChangeTrackerExtension.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker
 2 | 
 3 | import java.io.Serializable
 4 | 
 5 | open class ChangeTrackerExtension : Serializable {
 6 | 
 7 |     var tasks: Set<String> = emptySet<String>()
 8 |     var whitelist: Set<String> = emptySet<String>()
 9 |     var blacklist: Set<String> = emptySet<String>()
10 |     var reevaluate: Set<String> = emptySet<String>()
11 |     var branch: String = "master"
12 |     var remote: String? = null
13 |     var useMergeBaseDiff: Boolean = true
14 | }
15 | 


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/util/ProjectExtensions.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker.util
 2 | 
 3 | import com.ismaeldivita.changetracker.ChangeTrackerExtension
 4 | import org.gradle.api.Project
 5 | import java.lang.Exception
 6 | 
 7 | val Project.isRoot get() = this == rootProject
 8 | 
 9 | @Suppress("UNCHECKED_CAST")
10 | fun <T> Project.getExtraProperty(key: String): T? = try {
11 |     extensions.extraProperties[key] as T?
12 | } catch (error: Exception) {
13 |     null
14 | }
15 | 
16 | val Project.changeTrackerExtension: ChangeTrackerExtension
17 |     get() = extensions.getByName(CHANGE_TRACKER_EXTENSION) as ChangeTrackerExtension


--------------------------------------------------------------------------------
/gradle.properties:
--------------------------------------------------------------------------------
 1 | # Project-wide Gradle settings.
 2 | # IDE (e.g. Android Studio) users:
 3 | # Gradle settings configured through the IDE *will override*
 4 | # any settings specified in this file.
 5 | # For more details on how to configure your build environment visit
 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html
 7 | # Specifies the JVM arguments used for the daemon process.
 8 | # The setting is particularly useful for tweaking memory settings.
 9 | org.gradle.jvmargs=-Xmx1536m
10 | # When configured, Gradle will run in incubating parallel mode.
11 | # This option should only be used with decoupled projects. More details, visit
12 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
13 | # org.gradle.parallel=true
14 | # Kotlin code style for this project: "official" or "obsolete":
15 | kotlin.code.style=official
16 | 


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/project/ProjectLocator.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker.project
 2 | 
 3 | import org.gradle.api.Project
 4 | import java.io.File
 5 | 
 6 | class ProjectLocator(private val rootProject: Project) {
 7 | 
 8 |     private val projects = rootProject
 9 |         .subprojects
10 |         .sortedByDescending { it.depth }
11 |         .map { subproject ->
12 |             val relativePath = subproject.projectDir.path.removePrefix(subproject.rootDir.path)
13 |             val paths = relativePath.split(File.separatorChar).drop(1)
14 | 
15 |             subproject to paths
16 |         }
17 | 
18 |     fun locateProject(filePath: String): Project? {
19 |         val filePaths = filePath.split(File.separatorChar)
20 | 
21 |         return if (filePaths.size == 1) {
22 |             rootProject
23 |         } else {
24 |             projects.find { (_, projectPaths) ->
25 |                 (projectPaths.indices).all { projectPaths[it] == filePaths[it] }
26 |             }?.first
27 |         }
28 |     }
29 | }


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | MIT License
 2 | 
 3 | Copyright (c) 2019 Ismael Di Vita
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


--------------------------------------------------------------------------------
/change_tracker/build.gradle:
--------------------------------------------------------------------------------
 1 | plugins {
 2 |     id "com.gradle.plugin-publish" version "0.11.0"
 3 |     id "kotlin"
 4 |     id 'maven-publish'
 5 | }
 6 | 
 7 | version = "0.7.4"
 8 | group = "com.ismaeldivita.changetracker"
 9 | 
10 | publishing {
11 |     publications {
12 |         pluginPublication (MavenPublication) {
13 |             from    components.java
14 |             groupId    project.group
15 |             version    project.version
16 |         }
17 |     }
18 | }
19 | 
20 | pluginBundle {
21 |     website = 'https://github.com/ismaeldivita/change-tracker'
22 |     vcsUrl = 'https://github.com/ismaeldivita/change-tracker'
23 |     description = 'A gradle plugin to track changes on modules and his dependents'
24 |     tags = ['module', 'test']
25 | 
26 |     plugins {
27 |         changeTracker {
28 |             id = 'com.ismaeldivita.changetracker'
29 |             displayName = 'Change Tracker Plugin'
30 |         }
31 |     }
32 | }
33 | 
34 | dependencies {
35 |     implementation gradleApi()
36 |     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.40"
37 |     implementation "org.eclipse.jgit:org.eclipse.jgit:5.4.0.201906121030-r"
38 | }
39 | 


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/project/ProjectDependents.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker.project
 2 | 
 3 | import org.gradle.api.Project
 4 | import org.gradle.api.artifacts.ProjectDependency
 5 | 
 6 | class ProjectDependents(rootProject: Project) {
 7 | 
 8 |     private val dependents = rootProject
 9 |         .subprojects
10 |         .map { it to mutableSetOf<Project>() }
11 |         .toMap()
12 |         .apply { traverseDependencies() }
13 | 
14 |     fun getAllDependents(project: Project): Set<Project> {
15 |         val dependents = dependents[project] ?: emptySet<Project>()
16 |         return setOf(project) + dependents + dependents.map { getAllDependents(it) }.flatten().toSet()
17 |     }
18 | 
19 |     private fun Map<Project, MutableSet<Project>>.traverseDependencies() {
20 |         forEach { subProject, _ ->
21 |             subProject.configurations
22 |                 .filter { !it.name.toLowerCase().contains("test") }
23 |                 .forEach { config ->
24 |                     config
25 |                         .dependencies
26 |                         .filterIsInstance<ProjectDependency>()
27 |                         .forEach { getValue(it.dependencyProject).add(subProject) }
28 |                 }
29 |         }
30 |     }
31 | 
32 | }
33 | 


--------------------------------------------------------------------------------
/gradlew.bat:
--------------------------------------------------------------------------------
 1 | @if "%DEBUG%" == "" @echo off
 2 | @rem ##########################################################################
 3 | @rem
 4 | @rem  Gradle startup script for Windows
 5 | @rem
 6 | @rem ##########################################################################
 7 | 
 8 | @rem Set local scope for the variables with windows NT shell
 9 | if "%OS%"=="Windows_NT" setlocal
10 | 
11 | set DIRNAME=%~dp0
12 | if "%DIRNAME%" == "" set DIRNAME=.
13 | set APP_BASE_NAME=%~n0
14 | set APP_HOME=%DIRNAME%
15 | 
16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
17 | set DEFAULT_JVM_OPTS=
18 | 
19 | @rem Find java.exe
20 | if defined JAVA_HOME goto findJavaFromJavaHome
21 | 
22 | set JAVA_EXE=java.exe
23 | %JAVA_EXE% -version >NUL 2>&1
24 | if "%ERRORLEVEL%" == "0" goto init
25 | 
26 | echo.
27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
28 | echo.
29 | echo Please set the JAVA_HOME variable in your environment to match the
30 | echo location of your Java installation.
31 | 
32 | goto fail
33 | 
34 | :findJavaFromJavaHome
35 | set JAVA_HOME=%JAVA_HOME:"=%
36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe
37 | 
38 | if exist "%JAVA_EXE%" goto init
39 | 
40 | echo.
41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
42 | echo.
43 | echo Please set the JAVA_HOME variable in your environment to match the
44 | echo location of your Java installation.
45 | 
46 | goto fail
47 | 
48 | :init
49 | @rem Get command-line arguments, handling Windows variants
50 | 
51 | if not "%OS%" == "Windows_NT" goto win9xME_args
52 | 
53 | :win9xME_args
54 | @rem Slurp the command line arguments.
55 | set CMD_LINE_ARGS=
56 | set _SKIP=2
57 | 
58 | :win9xME_args_slurp
59 | if "x%~1" == "x" goto execute
60 | 
61 | set CMD_LINE_ARGS=%*
62 | 
63 | :execute
64 | @rem Setup the command line
65 | 
66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
67 | 
68 | @rem Execute Gradle
69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
70 | 
71 | :end
72 | @rem End local scope for the variables with windows NT shell
73 | if "%ERRORLEVEL%"=="0" goto mainEnd
74 | 
75 | :fail
76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
77 | rem the _cmd.exe /c_ return code!
78 | if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
79 | exit /b 1
80 | 
81 | :mainEnd
82 | if "%OS%"=="Windows_NT" endlocal
83 | 
84 | :omega
85 | 


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/ChangeTrackerPlugin.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker
 2 | 
 3 | import com.ismaeldivita.changetracker.util.CHANGED_TRACKER_GROUP_NAME
 4 | import com.ismaeldivita.changetracker.util.isRoot
 5 | import com.ismaeldivita.changetracker.util.CHANGE_TRACKER_EXTENSION
 6 | import com.ismaeldivita.changetracker.util.CHANGED_TRACKER_MODULES_TASK_NAME
 7 | import com.ismaeldivita.changetracker.util.CHANGED_TRACKER_OUTPUT
 8 | import com.ismaeldivita.changetracker.util.changeTrackerExtension
 9 | import com.ismaeldivita.changetracker.util.getExtraProperty
10 | import org.gradle.api.GradleException
11 | import org.gradle.api.Plugin
12 | import org.gradle.api.Project
13 | import org.gradle.api.Task
14 | 
15 | class ChangeTrackerPlugin : Plugin<Project> {
16 | 
17 |     override fun apply(project: Project) {
18 |         if (!project.isRoot) {
19 |             throw GradleException("change-tracker plugin must be applied only on the root project")
20 |         }
21 | 
22 |         project.extensions.create(CHANGE_TRACKER_EXTENSION, ChangeTrackerExtension::class.java)
23 | 
24 |         project.afterEvaluate {
25 |             project.tasks.create(
26 |                 CHANGED_TRACKER_MODULES_TASK_NAME,
27 |                 ChangedModulesTask::class.java
28 |             ) { task ->
29 |                 task.group = CHANGED_TRACKER_GROUP_NAME
30 |             }
31 |             configureTasks(project)
32 |         }
33 |     }
34 | 
35 |     private fun configureTasks(project: Project) {
36 |         val tasksNames = project.changeTrackerExtension.tasks
37 | 
38 |         tasksNames.forEach {
39 |             project.tasks.register("$it${CHANGED_TRACKER_MODULES_TASK_NAME.capitalize()}") { task ->
40 |                 task.group = CHANGED_TRACKER_GROUP_NAME
41 |                 task.dependsOn(project.tasks.findByName(CHANGED_TRACKER_MODULES_TASK_NAME))
42 |                 task.finalizedBy(getTaskForSubProjects(it, project.subprojects))
43 |             }
44 |         }
45 |     }
46 | 
47 |     private fun getTaskForSubProjects(taskName: String, subProjects: Set<Project>): List<Task> =
48 |         subProjects.mapNotNull { subProject ->
49 |             val task = subProject.tasks.findByName(taskName)
50 |             if (task != null) {
51 |                 task.apply {
52 |                     onlyIf {
53 |                         subProject.rootProject
54 |                             .getExtraProperty<Set<Project>>(CHANGED_TRACKER_OUTPUT)
55 |                             ?.contains(subProject)
56 |                             ?: true
57 |                     }
58 |                 }
59 |             } else {
60 |                 subProject.logger.info("ChangeTracker - Task [$taskName] not found for $subProject")
61 |                 null
62 |             }
63 |         }
64 | }


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/ChangedModulesTask.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker
 2 | 
 3 | import com.ismaeldivita.changetracker.git.JGitClient
 4 | import com.ismaeldivita.changetracker.project.ProjectDependents
 5 | import com.ismaeldivita.changetracker.project.ProjectLocator
 6 | import com.ismaeldivita.changetracker.util.*
 7 | import org.gradle.api.DefaultTask
 8 | import org.gradle.api.Project
 9 | import org.gradle.api.tasks.TaskAction
10 | 
11 | open class ChangedModulesTask : DefaultTask() {
12 | 
13 |     private val whitelist by lazy { getProjectsByName(changeTrackerExtension.whitelist) }
14 |     private val blacklist by lazy { getProjectsByName(changeTrackerExtension.blacklist) }
15 |     private val reevaluate by lazy { getProjectsByName(changeTrackerExtension.reevaluate) }
16 |     private val branch by lazy { getProperty<String>("branch") ?: changeTrackerExtension.branch }
17 |     private val remote by lazy { getProperty<String>("remote") ?: changeTrackerExtension.remote }
18 |     private val useMergeBranchDiff by lazy { changeTrackerExtension.useMergeBaseDiff }
19 | 
20 |     @TaskAction
21 |     fun taskAction() {
22 |         val projectDependents = ProjectDependents(rootProject)
23 |         val locator = ProjectLocator(rootProject)
24 |         val changedFiles = JGitClient(rootProject).getChangedFiles(
25 |             branch = branch,
26 |             remote = remote,
27 |             useMergeBaseDiff = useMergeBranchDiff
28 |         )
29 |         val changedProjects = changedFiles.map { locator.locateProject(it) }.toSet()
30 | 
31 |         val result: MutableSet<Project> = when {
32 |             changedProjects.contains(rootProject) -> rootProject.subprojects
33 |             reevaluate.any(changedProjects::contains) -> rootProject.subprojects
34 |             changedProjects.contains(null) -> rootProject.subprojects
35 |             else -> changedProjects
36 |                 .filterNotNull()
37 |                 .map { projectDependents.getAllDependents(it) }
38 |                 .flatten()
39 |                 .toMutableSet()
40 |         }
41 | 
42 |         result.removeAll(blacklist)
43 |         result.addAll(whitelist)
44 | 
45 |         log(changedFiles, changedProjects, result)
46 | 
47 |         rootProject.extensions.extraProperties.set(CHANGED_TRACKER_OUTPUT, result)
48 |     }
49 | 
50 |     private fun log(
51 |         changedFiles: Set<String>,
52 |         changedProjects: Set<Project?>,
53 |         result: MutableSet<Project>
54 |     ) {
55 |         if (logger.isInfoEnabled) {
56 |             if (changedFiles.isEmpty()) {
57 |                 logger.info("\nNo Changed Files")
58 |             } else {
59 |                 logger.info("\nChanged Files")
60 |                 changedFiles.forEach { logger.info("- $it") }
61 | 
62 |                 logger.info("\nChanged Projects")
63 |                 changedProjects.forEach { logger.info("- $it") }
64 |             }
65 |         }
66 | 
67 |         if (result.isEmpty()) {
68 |             project.logger.quiet("\nNo Affected Projects")
69 |         } else {
70 |             project.logger.quiet("\nAffected Projects")
71 |             result.forEach { it.logger.quiet("- $it") }
72 |         }
73 |     }
74 | 
75 |     private fun getProjectsByName(projectArgs: Set<String>): Set<Project> =
76 |         rootProject
77 |             .subprojects
78 |             .filter { projectArgs.contains(it.path) }
79 |             .toSet()
80 | }


--------------------------------------------------------------------------------
/change_tracker/src/main/kotlin/com/ismaeldivita/changetracker/git/JGitClient.kt:
--------------------------------------------------------------------------------
 1 | package com.ismaeldivita.changetracker.git
 2 | 
 3 | import org.eclipse.jgit.api.Git
 4 | import org.eclipse.jgit.diff.DiffEntry
 5 | import org.eclipse.jgit.diff.DiffEntry.ChangeType.ADD
 6 | import org.eclipse.jgit.diff.DiffEntry.ChangeType.MODIFY
 7 | import org.eclipse.jgit.diff.DiffEntry.ChangeType.DELETE
 8 | import org.eclipse.jgit.diff.DiffEntry.ChangeType.RENAME
 9 | import org.eclipse.jgit.diff.DiffEntry.ChangeType.COPY
10 | import org.eclipse.jgit.lib.Constants.R_REMOTES
11 | import org.eclipse.jgit.lib.Constants.TYPE_TREE
12 | import org.eclipse.jgit.lib.Constants.HEAD
13 | import org.eclipse.jgit.lib.RepositoryBuilder
14 | import org.eclipse.jgit.revwalk.RevCommit
15 | import org.eclipse.jgit.revwalk.RevWalk
16 | import org.eclipse.jgit.revwalk.filter.RevFilter
17 | import org.eclipse.jgit.treewalk.AbstractTreeIterator
18 | import org.eclipse.jgit.treewalk.CanonicalTreeParser
19 | import org.gradle.api.GradleException
20 | import org.gradle.api.Project
21 | import org.gradle.internal.impldep.org.eclipse.jgit.lib.Constants.R_HEADS
22 | import java.io.File
23 | import java.lang.Exception
24 | 
25 | class JGitClient(project: Project) {
26 | 
27 |     private val oldPathChangeTypes = listOf(MODIFY, DELETE, RENAME)
28 |     private val newPathChangeTypes = listOf(RENAME, COPY, ADD)
29 | 
30 |     private val repo = RepositoryBuilder()
31 |         .setGitDir(File(project.rootDir, "/.git"))
32 |         .readEnvironment()
33 |         .build()
34 | 
35 |     private val git = Git(repo)
36 | 
37 |     fun getChangedFiles(branch: String, remote: String?, useMergeBaseDiff: Boolean): Set<String> {
38 |         val oldTree = getOldTree(branch, remote, useMergeBaseDiff)
39 | 
40 |         val diffs = git
41 |             .diff()
42 |             .setOldTree(oldTree)
43 |             .call()
44 | 
45 |         return mapPathFromDiffEntries(diffs)
46 |     }
47 | 
48 |     private fun mapPathFromDiffEntries(diffs: List<DiffEntry>): Set<String> {
49 |         val paths = mutableSetOf<String>()
50 | 
51 |         diffs.forEach {
52 |             if (it.shouldIncludeOldPath()) paths.add(it.oldPath)
53 |             if (it.shouldIncludeNewPath()) paths.add(it.newPath)
54 |         }
55 | 
56 |         return paths
57 |     }
58 | 
59 |     private fun getOldTree(
60 |         branch: String,
61 |         remote: String?,
62 |         useMergeBaseDiff: Boolean
63 |     ): AbstractTreeIterator = try {
64 |         val reader = repo.newObjectReader()
65 |         val rw = RevWalk(repo)
66 | 
67 |         val reference = if (remote.isNullOrBlank()) {
68 |             "$R_HEADS$branch"
69 |         } else {
70 |             "$R_REMOTES$remote/$branch"
71 |         }
72 | 
73 |         if (useMergeBaseDiff) {
74 |             val commitA: RevCommit = rw.parseCommit(repo.resolve(reference))
75 |             val commitB: RevCommit = rw.parseCommit(repo.resolve(HEAD))
76 | 
77 |             rw.markStart(commitA)
78 |             rw.markStart(commitB)
79 |             rw.revFilter = RevFilter.MERGE_BASE
80 |             val base = rw.next()
81 |             CanonicalTreeParser().apply { reset(reader, base.tree) }
82 |         } else {
83 |             val objId = repo.resolve("$reference^{$TYPE_TREE}")
84 |             CanonicalTreeParser(null, reader, objId)
85 |         }
86 |     } catch (error: Exception) {
87 |         throw GradleException("Branch ${remote.orEmpty()} $branch not found")
88 |     }
89 | 
90 |     private fun DiffEntry.shouldIncludeOldPath() = oldPathChangeTypes.contains(changeType)
91 | 
92 |     private fun DiffEntry.shouldIncludeNewPath() = newPathChangeTypes.contains(changeType)
93 | }
94 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # Notice
 2 | This project is no longer maintained and the repository is now archived.
 3 | 
 4 | Please migrate to other solutions, such as https://github.com/dropbox/AffectedModuleDetector.
 5 | 
 6 | # Change Tracker Plugin
 7 | 
 8 | A Gradle plugin to help analyse the dependency between modules and run tasks only on modules impacted by specific set of changes.
 9 | 
10 | The idea behind this plugin is to optimize running verification tasks on large modularized projects. There is no need to run these tasks on all modules every time we apply a change. Instead, we could run them only on modules affected by the changes and their dependents.
11 | 
12 | ___
13 | 
14 | Take the following project structure as an example:
15 | 
16 | <br>
17 | <p align="center">
18 | <img width="450" src="./assets/project.png"/>
19 | </p>
20 | <br>
21 | 
22 | If you apply changes to the `:profile-service` module, you only need to run your verification tasks on `:profile-service`, `:profile-feature`, and `:app`. It's safe to skip the tasks on all the other modules since they don't depend on `:profile-service` and can't be affected by these changes.
23 | 
24 | ## Setup
25 | 
26 | Apply the plugin and the configuration to your root project `build.gradle`
27 | 
28 | ```groovy 
29 | plugins {
30 |     id 'com.ismaeldivita.changetracker' version '0.7.4'
31 | }
32 | 
33 | // ...
34 | 
35 | changeTracker {
36 |     tasks = ['lint','testDebugUnitTest']
37 |     whitelist = [':app']
38 |     blacklist = [':network',':featureA']
39 |     reevaluate = [':sharedTest']
40 |     branch = "master"
41 |     remote = "origin"
42 | }
43 | ```
44 | 
45 | - `tasks`: List of the tasks the plugin will need to create.
46 | - `branch`: Name of the branch that should be used to extract the diff.
47 | - `whitelist` (optional): List of modules that should **always** run.
48 | - `blacklist` (optional): List of modules that should **never** run.
49 | - `reevaluate` (optional): List of modules that will trigger the task for all modules
50 | - `remote` (optional): Name of the remote repository.
51 | 
52 | ## Usage
53 | 
54 | The plugin will generate new tasks on the root project for each task provided on the configuration with the following name `${taskName}ChangedModules`.
55 | 
56 | Taking as an example the configuration above the plugin will generate two new tasks `lintChangedModules` and `testDebugUnitTestChangedModules`.
57 | 
58 | To run your task:
59 | 
60 | ```
61 | ./gradlew testDebugUnitTestChangedModules
62 | ```
63 | 
64 | You can override the default branch used for the comparison when running your command. This is useful when you're using the plugin on pull requests and each pull request may have different base branches.
65 | ```
66 | ./gradlew testDebugUnitTestChangedModules -Pbranch=dev
67 | ```
68 | 
69 | ## Notes
70 | - This plugin will assume you use GIT as your VCS.
71 | - Any changes to the root project or `buildSrc` will trigger the task for all modules.
72 | - Test configurations will not be tracked since dependency cycles could be created for test purposes and this is not supported by this plugin. If you have a shared test library project and want to trigger the tasks on their dependents check the `reevaluate` configuration.
73 | 
74 | ## License
75 | MIT License
76 | 
77 | Copyright (c) 2019 Ismael Di Vita
78 | 
79 | Permission is hereby granted, free of charge, to any person obtaining a copy
80 | of this software and associated documentation files (the "Software"), to deal
81 | in the Software without restriction, including without limitation the rights
82 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
83 | copies of the Software, and to permit persons to whom the Software is
84 | furnished to do so, subject to the following conditions:
85 | 
86 | The above copyright notice and this permission notice shall be included in all
87 | copies or substantial portions of the Software.
88 | 
89 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
90 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
91 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
92 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
93 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
94 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
95 | SOFTWARE.
96 | 


--------------------------------------------------------------------------------
/gradlew:
--------------------------------------------------------------------------------
  1 | #!/usr/bin/env sh
  2 | 
  3 | ##############################################################################
  4 | ##
  5 | ##  Gradle start up script for UN*X
  6 | ##
  7 | ##############################################################################
  8 | 
  9 | # Attempt to set APP_HOME
 10 | # Resolve links: $0 may be a link
 11 | PRG="$0"
 12 | # Need this for relative symlinks.
 13 | while [ -h "$PRG" ] ; do
 14 |     ls=`ls -ld "$PRG"`
 15 |     link=`expr "$ls" : '.*-> \(.*\)$'`
 16 |     if expr "$link" : '/.*' > /dev/null; then
 17 |         PRG="$link"
 18 |     else
 19 |         PRG=`dirname "$PRG"`"/$link"
 20 |     fi
 21 | done
 22 | SAVED="`pwd`"
 23 | cd "`dirname \"$PRG\"`/" >/dev/null
 24 | APP_HOME="`pwd -P`"
 25 | cd "$SAVED" >/dev/null
 26 | 
 27 | APP_NAME="Gradle"
 28 | APP_BASE_NAME=`basename "$0"`
 29 | 
 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 31 | DEFAULT_JVM_OPTS=""
 32 | 
 33 | # Use the maximum available, or set MAX_FD != -1 to use that value.
 34 | MAX_FD="maximum"
 35 | 
 36 | warn () {
 37 |     echo "$*"
 38 | }
 39 | 
 40 | die () {
 41 |     echo
 42 |     echo "$*"
 43 |     echo
 44 |     exit 1
 45 | }
 46 | 
 47 | # OS specific support (must be 'true' or 'false').
 48 | cygwin=false
 49 | msys=false
 50 | darwin=false
 51 | nonstop=false
 52 | case "`uname`" in
 53 |   CYGWIN* )
 54 |     cygwin=true
 55 |     ;;
 56 |   Darwin* )
 57 |     darwin=true
 58 |     ;;
 59 |   MINGW* )
 60 |     msys=true
 61 |     ;;
 62 |   NONSTOP* )
 63 |     nonstop=true
 64 |     ;;
 65 | esac
 66 | 
 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
 68 | 
 69 | # Determine the Java command to use to start the JVM.
 70 | if [ -n "$JAVA_HOME" ] ; then
 71 |     if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
 72 |         # IBM's JDK on AIX uses strange locations for the executables
 73 |         JAVACMD="$JAVA_HOME/jre/sh/java"
 74 |     else
 75 |         JAVACMD="$JAVA_HOME/bin/java"
 76 |     fi
 77 |     if [ ! -x "$JAVACMD" ] ; then
 78 |         die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
 79 | 
 80 | Please set the JAVA_HOME variable in your environment to match the
 81 | location of your Java installation."
 82 |     fi
 83 | else
 84 |     JAVACMD="java"
 85 |     which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 86 | 
 87 | Please set the JAVA_HOME variable in your environment to match the
 88 | location of your Java installation."
 89 | fi
 90 | 
 91 | # Increase the maximum file descriptors if we can.
 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
 93 |     MAX_FD_LIMIT=`ulimit -H -n`
 94 |     if [ $? -eq 0 ] ; then
 95 |         if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
 96 |             MAX_FD="$MAX_FD_LIMIT"
 97 |         fi
 98 |         ulimit -n $MAX_FD
 99 |         if [ $? -ne 0 ] ; then
100 |             warn "Could not set maximum file descriptor limit: $MAX_FD"
101 |         fi
102 |     else
103 |         warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
104 |     fi
105 | fi
106 | 
107 | # For Darwin, add options to specify how the application appears in the dock
108 | if $darwin; then
109 |     GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
110 | fi
111 | 
112 | # For Cygwin, switch paths to Windows format before running java
113 | if $cygwin ; then
114 |     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
115 |     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
116 |     JAVACMD=`cygpath --unix "$JAVACMD"`
117 | 
118 |     # We build the pattern for arguments to be converted via cygpath
119 |     ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
120 |     SEP=""
121 |     for dir in $ROOTDIRSRAW ; do
122 |         ROOTDIRS="$ROOTDIRS$SEP$dir"
123 |         SEP="|"
124 |     done
125 |     OURCYGPATTERN="(^($ROOTDIRS))"
126 |     # Add a user-defined pattern to the cygpath arguments
127 |     if [ "$GRADLE_CYGPATTERN" != "" ] ; then
128 |         OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
129 |     fi
130 |     # Now convert the arguments - kludge to limit ourselves to /bin/sh
131 |     i=0
132 |     for arg in "$@" ; do
133 |         CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
134 |         CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
135 | 
136 |         if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
137 |             eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
138 |         else
139 |             eval `echo args$i`="\"$arg\""
140 |         fi
141 |         i=$((i+1))
142 |     done
143 |     case $i in
144 |         (0) set -- ;;
145 |         (1) set -- "$args0" ;;
146 |         (2) set -- "$args0" "$args1" ;;
147 |         (3) set -- "$args0" "$args1" "$args2" ;;
148 |         (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
149 |         (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
150 |         (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
151 |         (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
152 |         (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
153 |         (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
154 |     esac
155 | fi
156 | 
157 | # Escape application args
158 | save () {
159 |     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
160 |     echo " "
161 | }
162 | APP_ARGS=$(save "$@")
163 | 
164 | # Collect all arguments for the java command, following the shell quoting and substitution rules
165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
166 | 
167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
169 |   cd "$(dirname "$0")"
170 | fi
171 | 
172 | exec "$JAVACMD" "$@"
173 | 


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