as33: Add missing GooglePluginUpdateVerifier

idea/src/org/jetbrains/kotlin/idea/update/GooglePluginUpdateVerifier.kt.as33

@@ -0,0 +1,152 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.update
+
+import com.intellij.ide.plugins.IdeaPluginDescriptor
+import com.intellij.ide.plugins.PluginManagerCore
+import com.intellij.ide.plugins.PluginNode
+import com.intellij.openapi.diagnostic.Logger
+import org.jetbrains.kotlin.idea.util.isDev
+import org.jetbrains.kotlin.idea.util.isEap
+import java.io.IOException
+import java.net.URL
+import java.util.*
+import javax.xml.bind.JAXBContext
+import javax.xml.bind.JAXBException
+import javax.xml.bind.annotation.*
+
+class GooglePluginUpdateVerifier : PluginUpdateVerifier() {
+    override val verifierName: String
+        get() = "Android Studio"
+
+    // Verifies if a plugin can be installed in Android Studio 3.2+.
+    // Currently used only by KotlinPluginUpdater.
+    override fun verify(pluginDescriptor: IdeaPluginDescriptor): PluginVerifyResult? {
+        if (pluginDescriptor.pluginId.idString != KOTLIN_PLUGIN_ID) {
+            return null
+        }
+
+        val version = pluginDescriptor.version
+        if (isEap(version) || isDev(version)) {
+            return PluginVerifyResult.accept()
+        }
+
+        try {
+            val url = URL(METADATA_FILE_URL)
+            val stream = url.openStream()
+            val context = JAXBContext.newInstance(PluginCompatibility::class.java)
+            val unmarshaller = context.createUnmarshaller()
+            val pluginCompatibility = unmarshaller.unmarshal(stream) as PluginCompatibility
+
+            val release = getRelease(pluginCompatibility)
+                    ?: return PluginVerifyResult.decline("No verified versions for this build.")
+
+            return if (release.plugins().any { KOTLIN_PLUGIN_ID == it.id && version == it.version })
+                PluginVerifyResult.accept()
+            else
+                PluginVerifyResult.decline("Version to be verified.")
+        } catch (e: Exception) {
+            LOG.info("Exception when verifying plugin ${pluginDescriptor.pluginId.idString} version $version", e)
+            return when (e) {
+                is IOException ->
+                    PluginVerifyResult.decline("unable to connect to compatibility verification repository")
+                is JAXBException -> PluginVerifyResult.decline("unable to parse compatibility verification metadata")
+                else -> PluginVerifyResult.decline("exception during verification ${e.message}")
+            }
+        }
+    }
+
+    private fun getRelease(pluginCompatibility: PluginCompatibility): StudioRelease? {
+        for (studioRelease in pluginCompatibility.releases()) {
+            if (buildInRange(studioRelease.name, studioRelease.sinceBuild, studioRelease.untilBuild)) {
+                return studioRelease
+            }
+        }
+        return null
+    }
+
+    private fun buildInRange(name: String?, sinceBuild: String?, untilBuild: String?): Boolean {
+        val descriptor = PluginNode()
+        descriptor.name = name
+        descriptor.sinceBuild = sinceBuild
+        descriptor.untilBuild = untilBuild
+        return PluginManagerCore.isCompatible(descriptor)
+    }
+
+    companion object {
+        private const val KOTLIN_PLUGIN_ID = "org.jetbrains.kotlin"
+        private const val METADATA_FILE_URL = "https://dl.google.com/android/studio/plugins/compatibility.xml"
+
+        private val LOG = Logger.getInstance(GooglePluginUpdateVerifier::class.java)
+
+        private fun PluginCompatibility.releases() = studioRelease ?: emptyArray()
+        private fun StudioRelease.plugins() = ideaPlugin ?: emptyArray()
+
+        @XmlRootElement(name = "plugin-compatibility")
+        @XmlAccessorType(XmlAccessType.FIELD)
+        class PluginCompatibility {
+            @XmlElement(name = "studio-release")
+            var studioRelease: Array<StudioRelease>? = null
+
+            override fun toString(): String {
+                return "PluginCompatibility(studioRelease=${Arrays.toString(studioRelease)})"
+            }
+        }
+
+        @XmlAccessorType(XmlAccessType.FIELD)
+        class StudioRelease {
+            @XmlAttribute(name = "until-build")
+            var untilBuild: String? = null
+            @XmlAttribute(name = "since-build")
+            var sinceBuild: String? = null
+            @XmlAttribute
+            var name: String? = null
+            @XmlAttribute
+            var channel: String? = null
+
+            @XmlElement(name = "idea-plugin")
+            var ideaPlugin: Array<IdeaPlugin>? = null
+
+            override fun toString(): String {
+                return "StudioRelease(" +
+                        "untilBuild=$untilBuild, name=$name, ideaPlugin=${Arrays.toString(ideaPlugin)}, " +
+                        "sinceBuild=$sinceBuild, channel=$channel" +
+                        ")"
+            }
+        }
+
+        @XmlAccessorType(XmlAccessType.FIELD)
+        class IdeaPlugin {
+            @XmlAttribute
+            var id: String? = null
+            @XmlAttribute
+            var sha256: String? = null
+            @XmlAttribute
+            var channel: String? = null
+            @XmlAttribute
+            var version: String? = null
+
+            @XmlElement(name = "idea-version")
+            var ideaVersion: IdeaVersion? = null
+
+            override fun toString(): String {
+                return "IdeaPlugin(id=$id, sha256=$sha256, ideaVersion=$ideaVersion, channel=$channel, version=$version)"
+            }
+        }
+
+        @XmlAccessorType(XmlAccessType.FIELD)
+        class IdeaVersion {
+            @XmlAttribute(name = "until-build")
+            var untilBuild: String? = null
+            @XmlAttribute(name = "since-build")
+            var sinceBuild: String? = null
+
+            override fun toString(): String {
+                return "IdeaVersion(untilBuild=$untilBuild, sinceBuild=$sinceBuild)"
+            }
+        }
+    }
+}