foundry.gradle.dependencies.DependencyCollection.kt Maven / Gradle / Ivy
/*
* Copyright (C) 2022 Slack Technologies, 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
*
* https://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.
*/
package foundry.gradle.dependencies
import kotlin.reflect.KProperty1
import kotlin.reflect.full.memberProperties
import kotlin.reflect.jvm.isAccessible
internal sealed class DependencyNode {
/** Returns a flattened set of all [DependencyDefs][DependencyDef]. */
abstract fun flatten(): Set
data class Leaf(
val key: String,
val dependency: DependencyDef,
val parent: DependencyCollection,
) : DependencyNode() {
override fun flatten(): Set {
return setOf(dependency)
}
}
data class Branch(val pathSegment: String, val nodes: Set) : DependencyNode() {
override fun flatten(): Set {
return nodes.flatMapTo(LinkedHashSet(), DependencyNode::flatten)
}
}
}
public interface DependencyCollection {
public companion object {
internal const val GRADLE_PROPERTY_PREFIX = "slack.dependencies."
}
}
/** Flattened bom dependencies of all dependencies contained in this collection. */
public fun DependencyCollection.boms(): List {
val result = mutableListOf()
if (this is DependencyGroup) {
result += this
}
result +=
this::class
.nestedClasses
.mapNotNull { it.objectInstance }
.filterIsInstance()
.flatMap { it.boms() }
.filter { it.bomArtifact != null }
return result
}
/** Flattened dependencies of all dependencies contained in this. */
public fun DependencyCollection.flattenedPlatformCoordinates(): Set =
getDependencies().flatten()
/**
* Flattened dependencies of all identifiers to their corresponding dependency version gradle
* properties.
*/
public fun DependencyCollection.identifiersToGradleProperties(
includeBomManagedDependencies: Boolean
): Map =
flattenedPlatformCoordinates()
.filterNot { includeBomManagedDependencies && it.isBomManaged }
.associate { it.identifier to it.gradleProperty }
/**
* Returns a mapping of identifiers (i.e. "com.foo:bar") to their qualified path within this
* collection
*/
internal fun DependencyCollection.identifierMap(): Map {
val rootDependencies = getDependencies()
val rootMap = mutableMapOf()
fun fillMap(currentPath: String, rootNode: DependencyNode) {
when (rootNode) {
is DependencyNode.Leaf -> {
rootMap[rootNode.dependency.identifier] = "$currentPath.${rootNode.key}"
}
is DependencyNode.Branch -> {
rootNode.nodes.forEach { fillMap("$currentPath.${rootNode.pathSegment}", it) }
}
}
}
rootDependencies.nodes.forEach { fillMap(rootDependencies.pathSegment, it) }
return rootMap.toMap()
}
internal fun DependencyCollection.getDependencies(): DependencyNode.Branch {
return walkClass()
}
/**
* This walks down the properties and subtypes of [this] [DependencyCollection] to create a branch
* within a larger dependency tree.
*/
private fun DependencyCollection.walkClass(): DependencyNode.Branch {
val segmentName = this::class.simpleName!!
val nodes = mutableListOf()
nodes += leaves()
for (type in this::class.nestedClasses) {
val objectInstance = type.objectInstance
if (objectInstance is DependencyCollection) {
nodes += objectInstance.walkClass()
}
}
return DependencyNode.Branch(segmentName, nodes.toSet())
}
private fun DependencyCollection.leaves(): List {
val nodes = mutableListOf()
for (prop in this::class.memberProperties) {
prop.isAccessible = true
@Suppress("UNCHECKED_CAST")
val possibleDelegate = (prop as KProperty1).getDelegate(this)
if (possibleDelegate is DependencyDelegate) {
val propKey = prop.name
val def = possibleDelegate.getOrCreateDef(prop)
nodes += DependencyNode.Leaf(propKey, def, this)
}
}
return nodes
}
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