kopia lustrzana https://github.com/ryukoposting/Signal-Android
501 wiersze
16 KiB
Kotlin
501 wiersze
16 KiB
Kotlin
package org.signal.spinner
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import android.app.Application
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import android.database.Cursor
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import androidx.sqlite.db.SupportSQLiteDatabase
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import com.github.jknack.handlebars.Handlebars
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import com.github.jknack.handlebars.Template
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import com.github.jknack.handlebars.helper.ConditionalHelpers
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import fi.iki.elonen.NanoHTTPD
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import org.signal.core.util.ExceptionUtil
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import org.signal.core.util.logging.Log
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import org.signal.spinner.Spinner.DatabaseConfig
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import java.lang.IllegalArgumentException
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import java.text.SimpleDateFormat
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import java.util.Date
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import java.util.Locale
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import java.util.Queue
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import java.util.concurrent.ConcurrentLinkedQueue
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import kotlin.math.ceil
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import kotlin.math.max
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import kotlin.math.min
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/**
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* The workhorse of this lib. Handles all of our our web routing and response generation.
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*
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* In general, you add routes in [serve], and then build a response by creating a handlebars template (in the assets folder) and then passing in a data class
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* to [renderTemplate].
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*/
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internal class SpinnerServer(
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private val application: Application,
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deviceInfo: Map<String, () -> String>,
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private val databases: Map<String, DatabaseConfig>,
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private val plugins: Map<String, Plugin>
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) : NanoHTTPD(5000) {
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companion object {
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private val TAG = Log.tag(SpinnerServer::class.java)
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}
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private val deviceInfo: Map<String, () -> String> = deviceInfo.filterKeys { !it.startsWith(Spinner.KEY_PREFIX) }
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private val environment: String = deviceInfo[Spinner.KEY_ENVIRONMENT]?.let { it() } ?: "UNKNOWN"
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private val handlebars: Handlebars = Handlebars(AssetTemplateLoader(application)).apply {
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registerHelper("eq", ConditionalHelpers.eq)
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registerHelper("neq", ConditionalHelpers.neq)
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}
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private val recentSql: MutableMap<String, Queue<QueryItem>> = mutableMapOf()
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private val dateFormat = SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS zzz", Locale.US)
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override fun serve(session: IHTTPSession): Response {
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if (session.method == Method.POST) {
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// Needed to populate session.parameters
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session.parseBody(mutableMapOf())
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}
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val dbParam: String = session.queryParam("db") ?: session.parameters["db"]?.toString() ?: databases.keys.first()
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val dbConfig: DatabaseConfig = databases[dbParam] ?: return internalError(IllegalArgumentException("Invalid db param!"))
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try {
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return when {
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session.method == Method.GET && session.uri == "/css/main.css" -> newFileResponse("css/main.css", "text/css")
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session.method == Method.GET && session.uri == "/js/main.js" -> newFileResponse("js/main.js", "text/javascript")
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session.method == Method.GET && session.uri == "/" -> getIndex(dbParam, dbConfig.db())
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session.method == Method.GET && session.uri == "/browse" -> getBrowse(dbParam, dbConfig.db())
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session.method == Method.POST && session.uri == "/browse" -> postBrowse(dbParam, dbConfig, session)
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session.method == Method.GET && session.uri == "/query" -> getQuery(dbParam)
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session.method == Method.POST && session.uri == "/query" -> postQuery(dbParam, dbConfig, session)
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session.method == Method.GET && session.uri == "/recent" -> getRecent(dbParam)
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else -> {
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val plugin = plugins[session.uri]
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if (plugin != null && session.method == Method.GET) {
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getPlugin(dbParam, plugin)
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} else {
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newFixedLengthResponse(Response.Status.NOT_FOUND, MIME_HTML, "Not found")
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}
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}
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}
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} catch (t: Throwable) {
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Log.e(TAG, t)
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return internalError(t)
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}
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}
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fun onSql(dbName: String, sql: String) {
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val commands: Queue<QueryItem> = recentSql[dbName] ?: ConcurrentLinkedQueue()
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commands += QueryItem(System.currentTimeMillis(), sql)
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if (commands.size > 500) {
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commands.remove()
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}
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recentSql[dbName] = commands
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}
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private fun getIndex(dbName: String, db: SupportSQLiteDatabase): Response {
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return renderTemplate(
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"overview",
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OverviewPageModel(
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environment = environment,
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deviceInfo = deviceInfo.resolve(),
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database = dbName,
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databases = databases.keys.toList(),
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plugins = plugins.values.toList(),
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tables = db.getTables().use { it.toTableInfo() },
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indices = db.getIndexes().use { it.toIndexInfo() },
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triggers = db.getTriggers().use { it.toTriggerInfo() },
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queryResult = db.getTables().use { it.toQueryResult() }
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)
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)
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}
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private fun getBrowse(dbName: String, db: SupportSQLiteDatabase): Response {
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return renderTemplate(
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"browse",
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BrowsePageModel(
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environment = environment,
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deviceInfo = deviceInfo.resolve(),
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database = dbName,
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databases = databases.keys.toList(),
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plugins = plugins.values.toList(),
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tableNames = db.getTableNames()
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)
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)
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}
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private fun postBrowse(dbName: String, dbConfig: DatabaseConfig, session: IHTTPSession): Response {
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val table: String = session.parameters["table"]?.get(0).toString()
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val pageSize: Int = session.parameters["pageSize"]?.get(0)?.toInt() ?: 1000
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var pageIndex: Int = session.parameters["pageIndex"]?.get(0)?.toInt() ?: 0
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val action: String? = session.parameters["action"]?.get(0)
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val rowCount = dbConfig.db().getTableRowCount(table)
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val pageCount = ceil(rowCount.toFloat() / pageSize.toFloat()).toInt()
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when (action) {
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"first" -> pageIndex = 0
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"next" -> pageIndex = min(pageIndex + 1, pageCount - 1)
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"previous" -> pageIndex = max(pageIndex - 1, 0)
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"last" -> pageIndex = pageCount - 1
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}
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val query = "select * from $table limit $pageSize offset ${pageSize * pageIndex}"
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val queryResult = dbConfig.db().query(query).use { it.toQueryResult(columnTransformers = dbConfig.columnTransformers) }
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return renderTemplate(
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"browse",
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BrowsePageModel(
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environment = environment,
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deviceInfo = deviceInfo.resolve(),
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database = dbName,
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databases = databases.keys.toList(),
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plugins = plugins.values.toList(),
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tableNames = dbConfig.db().getTableNames(),
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table = table,
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queryResult = queryResult,
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pagingData = PagingData(
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rowCount = rowCount,
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pageSize = pageSize,
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pageIndex = pageIndex,
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pageCount = pageCount,
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startRow = pageSize * pageIndex,
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endRow = min(pageSize * (pageIndex + 1), rowCount)
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)
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)
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)
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}
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private fun getQuery(dbName: String): Response {
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return renderTemplate(
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"query",
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QueryPageModel(
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environment = environment,
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deviceInfo = deviceInfo.resolve(),
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database = dbName,
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databases = databases.keys.toList(),
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plugins = plugins.values.toList(),
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query = ""
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)
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)
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}
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private fun getRecent(dbName: String): Response {
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val queries: List<RecentQuery>? = recentSql[dbName]
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?.map { it ->
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RecentQuery(
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formattedTime = dateFormat.format(Date(it.time)),
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query = it.query
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)
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}
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return renderTemplate(
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"recent",
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RecentPageModel(
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environment = environment,
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deviceInfo = deviceInfo.resolve(),
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database = dbName,
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databases = databases.keys.toList(),
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plugins = plugins.values.toList(),
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recentSql = queries?.reversed()
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)
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)
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}
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private fun postQuery(dbName: String, dbConfig: DatabaseConfig, session: IHTTPSession): Response {
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val action: String = session.parameters["action"]?.get(0).toString()
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val rawQuery: String = session.parameters["query"]?.get(0).toString()
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val query = if (action == "analyze") "EXPLAIN QUERY PLAN $rawQuery" else rawQuery
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val startTimeNanos = System.nanoTime()
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return renderTemplate(
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"query",
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QueryPageModel(
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environment = environment,
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deviceInfo = deviceInfo.resolve(),
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database = dbName,
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databases = databases.keys.toList(),
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plugins = plugins.values.toList(),
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query = rawQuery,
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queryResult = dbConfig.db().query(query).use { it.toQueryResult(queryStartTimeNanos = startTimeNanos, columnTransformers = dbConfig.columnTransformers) }
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)
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)
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}
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private fun getPlugin(dbName: String, plugin: Plugin): Response {
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return renderTemplate(
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"plugin",
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PluginPageModel(
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environment = environment,
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deviceInfo = deviceInfo.resolve(),
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database = dbName,
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databases = databases.keys.toList(),
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plugins = plugins.values.toList(),
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activePlugin = plugin,
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pluginResult = plugin.get()
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)
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)
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}
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private fun internalError(throwable: Throwable): Response {
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val stackTrace = ExceptionUtil.convertThrowableToString(throwable)
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.split("\n")
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.map { it.trim() }
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.mapIndexed { index, s -> if (index == 0) s else " $s" }
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.joinToString("<br />")
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return renderTemplate("error", stackTrace)
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}
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private fun renderTemplate(assetName: String, model: Any): Response {
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val template: Template = handlebars.compile(assetName)
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val output: String = template.apply(model)
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return newFixedLengthResponse(output)
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}
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private fun newFileResponse(assetPath: String, mimeType: String): Response {
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return newChunkedResponse(
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Response.Status.OK,
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mimeType,
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application.assets.open(assetPath)
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)
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}
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private fun Cursor.toQueryResult(queryStartTimeNanos: Long = 0, columnTransformers: List<ColumnTransformer> = emptyList()): QueryResult {
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val numColumns = this.columnCount
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val columns = mutableListOf<String>()
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val transformers = mutableListOf<ColumnTransformer>()
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for (i in 0 until numColumns) {
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val columnName = getColumnName(i)
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val customTransformer: ColumnTransformer? = columnTransformers.find { it.matches(null, columnName) }
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columns += if (customTransformer != null) {
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"$columnName *"
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} else {
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columnName
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}
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transformers += customTransformer ?: DefaultColumnTransformer
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}
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var timeOfFirstRowNanos = 0L
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val rows = mutableListOf<List<String>>()
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while (moveToNext()) {
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if (timeOfFirstRowNanos == 0L) {
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timeOfFirstRowNanos = System.nanoTime()
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}
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val row = mutableListOf<String>()
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for (i in 0 until numColumns) {
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val columnName: String = getColumnName(i)
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try {
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row += transformers[i].transform(null, columnName, this)
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} catch (e: Exception) {
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row += "*Failed to Transform*\n\n${DefaultColumnTransformer.transform(null, columnName, this)}"
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}
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}
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rows += row
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}
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if (timeOfFirstRowNanos == 0L) {
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timeOfFirstRowNanos = System.nanoTime()
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}
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return QueryResult(
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columns = columns,
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rows = rows,
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timeToFirstRow = (max(timeOfFirstRowNanos - queryStartTimeNanos, 0) / 1_000_000.0f).roundForDisplay(3),
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timeToReadRows = (max(System.nanoTime() - timeOfFirstRowNanos, 0) / 1_000_000.0f).roundForDisplay(3)
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)
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}
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fun Float.roundForDisplay(decimals: Int = 2): String {
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return "%.${decimals}f".format(this)
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}
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private fun Cursor.toTableInfo(): List<TableInfo> {
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val tables = mutableListOf<TableInfo>()
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while (moveToNext()) {
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val name = getString(getColumnIndexOrThrow("name"))
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tables += TableInfo(
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name = name ?: "null",
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sql = getString(getColumnIndexOrThrow("sql"))?.formatAsSqlCreationStatement(name) ?: "null"
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)
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}
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return tables
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}
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private fun Cursor.toIndexInfo(): List<IndexInfo> {
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val indices = mutableListOf<IndexInfo>()
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while (moveToNext()) {
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indices += IndexInfo(
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name = getString(getColumnIndexOrThrow("name")) ?: "null",
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sql = getString(getColumnIndexOrThrow("sql")) ?: "null"
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)
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}
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return indices
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}
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private fun Cursor.toTriggerInfo(): List<TriggerInfo> {
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val indices = mutableListOf<TriggerInfo>()
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while (moveToNext()) {
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indices += TriggerInfo(
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name = getString(getColumnIndexOrThrow("name")) ?: "null",
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sql = getString(getColumnIndexOrThrow("sql")) ?: "null"
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)
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}
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return indices
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}
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/** Takes a SQL table creation statement and formats it using HTML */
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private fun String.formatAsSqlCreationStatement(name: String): String {
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val fields = substring(indexOf("(") + 1, this.length - 1).split(",")
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val fieldStrings = fields.map { s -> " ${s.trim()},<br>" }.toMutableList()
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if (fieldStrings.isNotEmpty()) {
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fieldStrings[fieldStrings.lastIndex] = " ${fields.last().trim()}<br>"
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}
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return "CREATE TABLE $name (<br/>" +
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fieldStrings.joinToString("") +
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")"
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}
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private fun IHTTPSession.queryParam(name: String): String? {
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if (queryParameterString == null) {
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return null
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}
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val params: Map<String, String> = queryParameterString
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.split("&")
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.mapNotNull { part ->
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val parts = part.split("=")
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if (parts.size == 2) {
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parts[0] to parts[1]
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} else {
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null
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}
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}
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.toMap()
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return params[name]
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}
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private fun Map<String, () -> String>.resolve(): Map<String, String> {
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return this.mapValues { entry -> entry.value() }.toMap()
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}
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interface PrefixPageData {
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val environment: String
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val deviceInfo: Map<String, String>
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val database: String
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val databases: List<String>
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val plugins: List<Plugin>
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}
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data class OverviewPageModel(
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override val environment: String,
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override val deviceInfo: Map<String, String>,
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override val database: String,
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override val databases: List<String>,
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override val plugins: List<Plugin>,
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val tables: List<TableInfo>,
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val indices: List<IndexInfo>,
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val triggers: List<TriggerInfo>,
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val queryResult: QueryResult? = null
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) : PrefixPageData
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data class BrowsePageModel(
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override val environment: String,
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override val deviceInfo: Map<String, String>,
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override val database: String,
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override val databases: List<String>,
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override val plugins: List<Plugin>,
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val tableNames: List<String>,
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val table: String? = null,
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val queryResult: QueryResult? = null,
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val pagingData: PagingData? = null,
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) : PrefixPageData
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data class QueryPageModel(
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override val environment: String,
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override val deviceInfo: Map<String, String>,
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override val database: String,
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override val databases: List<String>,
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override val plugins: List<Plugin>,
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val query: String = "",
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val queryResult: QueryResult? = null
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) : PrefixPageData
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data class RecentPageModel(
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override val environment: String,
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override val deviceInfo: Map<String, String>,
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override val database: String,
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override val databases: List<String>,
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override val plugins: List<Plugin>,
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val recentSql: List<RecentQuery>?
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) : PrefixPageData
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data class PluginPageModel(
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override val environment: String,
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override val deviceInfo: Map<String, String>,
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override val database: String,
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override val databases: List<String>,
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override val plugins: List<Plugin>,
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val activePlugin: Plugin,
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val pluginResult: PluginResult
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) : PrefixPageData
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data class QueryResult(
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val columns: List<String>,
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val rows: List<List<String>>,
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val rowCount: Int = rows.size,
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val timeToFirstRow: String,
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val timeToReadRows: String,
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)
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data class TableInfo(
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val name: String,
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val sql: String
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)
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data class IndexInfo(
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val name: String,
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val sql: String
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)
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data class TriggerInfo(
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val name: String,
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val sql: String
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)
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data class PagingData(
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val rowCount: Int,
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val pageSize: Int,
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val pageIndex: Int,
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val pageCount: Int,
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val firstPage: Boolean = pageIndex == 0,
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val lastPage: Boolean = pageIndex == pageCount - 1,
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val startRow: Int,
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val endRow: Int
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)
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data class QueryItem(
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val time: Long,
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val query: String
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)
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data class RecentQuery(
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val formattedTime: String,
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val query: String
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)
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}
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