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/* Title: Pure/Tools/server.scala
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Author: Makarius
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Resident Isabelle servers.
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*/
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package isabelle
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import java.util.UUID
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import java.net.{ServerSocket, InetAddress}
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object Server
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{
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/* per-user servers */
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object Data
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{
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val database = Path.explode("$ISABELLE_HOME_USER/server.db")
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val server_name = SQL.Column.string("server_name", primary_key = true)
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val server_port = SQL.Column.int("server_port")
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val password = SQL.Column.string("password")
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val table = SQL.Table("isabelle_servers", List(server_name, server_port, password))
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sealed case class Entry(server_name: String, server_port: Int, password: String)
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{
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def print: String =
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"server " + quote(server_name) + " = 127.0.0.1:" + server_port +
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" (password " + quote(password) + ")"
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}
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}
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def list(): List[Data.Entry] =
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using(SQLite.open_database(Data.database))(list(_))
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def list(db: SQLite.Database): List[Data.Entry] =
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if (db.tables.contains(Data.table.name)) {
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db.using_statement(Data.table.select())(stmt =>
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stmt.execute_query().iterator(res =>
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Data.Entry(
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res.string(Data.server_name),
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res.int(Data.server_port),
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res.string(Data.password))).toList.sortBy(_.server_name))
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}
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else Nil
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def find(db: SQLite.Database, name: String): Option[Data.Entry] =
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list(db).find(entry => entry.server_name == name)
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def start(name: String = "", port: Int = 0, password: String = ""): (Data.Entry, Option[Thread]) =
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{
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using(SQLite.open_database(Data.database))(db =>
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db.transaction {
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find(db, name) match {
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case Some(entry) => (entry, None)
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case None =>
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val server = new Server(port, password)
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val entry = Data.Entry(name, server.port, server.password)
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Isabelle_System.bash("chmod 600 " + File.bash_path(Data.database)).check
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db.create_table(Data.table)
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db.using_statement(Data.table.insert())(stmt =>
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{
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stmt.string(1) = entry.server_name
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stmt.int(2) = entry.server_port
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stmt.string(3) = entry.password
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stmt.execute()
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})
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(entry, Some(server.thread))
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}
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})
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}
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def stop(name: String = ""): Boolean =
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{
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using(SQLite.open_database(Data.database))(db =>
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db.transaction {
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find(db, name) match {
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case Some(entry) =>
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// FIXME shutdown server
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db.using_statement(Data.table.delete(Data.server_name.where_equal(name)))(_.execute)
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true
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case None =>
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false
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}
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})
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}
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/* Isabelle tool wrapper */
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val isabelle_tool =
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Isabelle_Tool("server", "manage resident Isabelle servers", args =>
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{
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var operation_list = false
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var name = ""
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var port = 0
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val getopts =
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Getopts("""
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Usage: isabelle server [OPTIONS]
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Options are:
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-L list servers
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-n NAME explicit server name
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-p PORT explicit server port
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Manage resident Isabelle servers.
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""",
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"L" -> (_ => operation_list = true),
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"n:" -> (arg => name = arg),
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"p:" -> (arg => port = Value.Int.parse(arg)))
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val more_args = getopts(args)
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if (more_args.nonEmpty) getopts.usage()
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if (operation_list) list().foreach(entry => Console.println(entry.print))
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else {
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val (entry, thread) = start(name, port)
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Console.println(entry.print)
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thread.foreach(_.join)
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}
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})
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}
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class Server private(_port: Int, _password: String)
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{
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val socket = new ServerSocket(_port, 50, InetAddress.getByName("127.0.0.1"))
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def port: Int = socket.getLocalPort
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val password: String = proper_string(_password) getOrElse UUID.randomUUID().toString
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lazy val thread: Thread = Thread.currentThread // FIXME
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}
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