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694 lines
19 KiB
Java
694 lines
19 KiB
Java
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 2001-2002
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* Sleepycat Software. All rights reserved.
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*
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* $Id: RpcDb.java,v 1.8 2002/08/09 01:56:09 bostic Exp $
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*/
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package com.sleepycat.db.rpcserver;
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import com.sleepycat.db.*;
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import java.io.IOException;
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import java.io.*;
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import java.util.*;
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/**
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* RPC wrapper around a db object for the Java RPC server.
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*/
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public class RpcDb extends Timer
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{
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static final byte[] empty = new byte[0];
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Db db;
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RpcDbEnv rdbenv;
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int refcount = 1;
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String dbname, subdbname;
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int type, setflags, openflags;
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public RpcDb(RpcDbEnv rdbenv)
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{
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this.rdbenv = rdbenv;
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}
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void dispose()
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{
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if (db != null) {
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try {
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db.close(0);
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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}
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db = null;
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}
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}
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public void associate(DbDispatcher server,
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__db_associate_msg args, __db_associate_reply reply)
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{
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try {
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RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
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DbTxn txn = (rtxn != null) ? rtxn.txn : null;
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/*
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* We do not support DB_CREATE for associate. Users
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* can only access secondary indices on a read-only basis,
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* so whatever they are looking for needs to be there already.
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*/
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db.associate(txn, server.getDb(args.sdbpcl_id).db, null, args.flags);
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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}
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}
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public void close(DbDispatcher server,
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__db_close_msg args, __db_close_reply reply)
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{
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if (--refcount != 0) {
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reply.status = 0;
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return;
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}
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try {
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db.close(args.flags);
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db = null;
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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} finally {
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server.delDb(this);
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}
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}
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public void create(DbDispatcher server,
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__db_create_msg args, __db_create_reply reply)
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{
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try {
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db = new Db(server.getEnv(args.dbenvcl_id).dbenv, args.flags);
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reply.dbcl_id = server.addDb(this);
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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}
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}
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public void cursor(DbDispatcher server,
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__db_cursor_msg args, __db_cursor_reply reply)
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{
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try {
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RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
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DbTxn txn = (rtxn != null) ? rtxn.txn : null;
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Dbc dbc = db.cursor(txn, args.flags);
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RpcDbc rdbc = new RpcDbc(this, dbc, false);
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rdbc.timer = (rtxn != null) ? rtxn.timer : this;
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reply.dbcidcl_id = server.addCursor(rdbc);
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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}
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}
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public void del(DbDispatcher server,
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__db_del_msg args, __db_del_reply reply)
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{
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try {
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RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
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DbTxn txn = (rtxn != null) ? rtxn.txn : null;
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Dbt key = new Dbt(args.keydata);
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key.set_dlen(args.keydlen);
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key.set_doff(args.keydoff);
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key.set_ulen(args.keyulen);
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key.set_flags(args.keyflags);
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db.del(txn, key, args.flags);
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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}
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}
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public void get(DbDispatcher server,
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__db_get_msg args, __db_get_reply reply)
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{
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try {
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RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
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DbTxn txn = (rtxn != null) ? rtxn.txn : null;
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Dbt key = new Dbt(args.keydata);
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key.set_dlen(args.keydlen);
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key.set_doff(args.keydoff);
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key.set_ulen(args.keyulen);
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key.set_flags(Db.DB_DBT_MALLOC |
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(args.keyflags & Db.DB_DBT_PARTIAL));
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Dbt data = new Dbt(args.datadata);
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data.set_dlen(args.datadlen);
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data.set_doff(args.datadoff);
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data.set_ulen(args.dataulen);
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if ((args.flags & Db.DB_MULTIPLE) != 0) {
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if (data.get_data().length == 0)
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data.set_data(new byte[data.get_ulen()]);
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data.set_flags(Db.DB_DBT_USERMEM |
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(args.dataflags & Db.DB_DBT_PARTIAL));
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} else
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data.set_flags(Db.DB_DBT_MALLOC |
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(args.dataflags & Db.DB_DBT_PARTIAL));
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reply.status = db.get(txn, key, data, args.flags);
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if (key.get_data() == args.keydata ||
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key.get_data().length != key.get_size()) {
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reply.keydata = new byte[key.get_size()];
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System.arraycopy(key.get_data(), 0, reply.keydata, 0, key.get_size());
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} else
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reply.keydata = key.get_data();
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if (data.get_data() == args.datadata ||
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data.get_data().length != data.get_size()) {
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reply.datadata = new byte[data.get_size()];
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System.arraycopy(data.get_data(), 0, reply.datadata, 0, data.get_size());
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} else
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reply.datadata = data.get_data();
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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reply.keydata = reply.datadata = empty;
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}
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}
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public void join(DbDispatcher server,
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__db_join_msg args, __db_join_reply reply)
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{
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try {
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Dbc[] cursors = new Dbc[args.curs.length + 1];
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for(int i = 0; i < args.curs.length; i++) {
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RpcDbc rdbc = server.getCursor(args.curs[i]);
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if (rdbc == null) {
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reply.status = Db.DB_NOSERVER_ID;
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return;
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}
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cursors[i] = rdbc.dbc;
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}
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cursors[args.curs.length] = null;
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Dbc jdbc = db.join(cursors, args.flags);
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RpcDbc rjdbc = new RpcDbc(this, jdbc, true);
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/*
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* If our curslist has a parent txn, we need to use it too
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* for the activity timeout. All cursors must be part of
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* the same transaction, so just check the first.
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*/
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RpcDbc rdbc0 = server.getCursor(args.curs[0]);
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if (rdbc0.timer != rdbc0)
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rjdbc.timer = rdbc0.timer;
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/*
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* All of the curslist cursors must point to the join
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* cursor's timeout so that we do not timeout any of the
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* curlist cursors while the join cursor is active.
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*/
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for(int i = 0; i < args.curs.length; i++) {
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RpcDbc rdbc = server.getCursor(args.curs[i]);
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rdbc.orig_timer = rdbc.timer;
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rdbc.timer = rjdbc;
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}
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reply.dbcidcl_id = server.addCursor(rjdbc);
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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}
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}
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public void key_range(DbDispatcher server,
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__db_key_range_msg args, __db_key_range_reply reply)
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{
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try {
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RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
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DbTxn txn = (rtxn != null) ? rtxn.txn : null;
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Dbt key = new Dbt(args.keydata);
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key.set_dlen(args.keydlen);
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key.set_doff(args.keydoff);
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key.set_ulen(args.keyulen);
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key.set_flags(args.keyflags);
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DbKeyRange range = new DbKeyRange();
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db.key_range(txn, key, range, args.flags);
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reply.status = 0;
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reply.less = range.less;
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reply.equal = range.equal;
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reply.greater = range.greater;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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}
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}
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private boolean findSharedDb(DbDispatcher server, __db_open_reply reply)
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throws DbException
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{
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RpcDb rdb = null;
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boolean matchFound = false;
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LocalIterator i = ((DbServer)server).db_list.iterator();
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while (!matchFound && i.hasNext()) {
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rdb = (RpcDb)i.next();
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if (rdb != null && rdb != this && rdb.rdbenv == rdbenv &&
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(type == Db.DB_UNKNOWN || rdb.type == type) &&
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openflags == rdb.openflags &&
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setflags == rdb.setflags &&
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dbname != null && rdb.dbname != null &&
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dbname.equals(rdb.dbname) &&
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(subdbname == rdb.subdbname ||
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(subdbname != null && rdb.subdbname != null &&
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subdbname.equals(rdb.subdbname))))
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matchFound = true;
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}
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if (matchFound) {
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++rdb.refcount;
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reply.dbcl_id = ((FreeList.FreeListIterator)i).current;
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reply.type = rdb.db.get_type();
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reply.dbflags = rdb.db.get_flags_raw();
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// FIXME: not possible to work out byteorder from Java?
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reply.lorder = rdb.db.get_byteswapped() ? 4321 : 1234;
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reply.status = 0;
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DbServer.err.println("Sharing Db: " + reply.dbcl_id);
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}
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return matchFound;
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}
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public void open(DbDispatcher server,
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__db_open_msg args, __db_open_reply reply)
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{
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try {
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dbname = (args.name.length() > 0) ? args.name : null;
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subdbname = (args.subdb.length() > 0) ? args.subdb : null;
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type = args.type;
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openflags = args.flags & DbServer.DB_SERVER_DBFLAGS;
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if (findSharedDb(server, reply)) {
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db.close(0);
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db = null;
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server.delDb(this);
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} else {
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DbServer.err.println("Calling db.open(" + null + ", " + dbname + ", " + subdbname + ", " + args.type + ", " + Integer.toHexString(args.flags) + ", " + args.mode + ")");
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db.open(null, dbname, subdbname, args.type, args.flags, args.mode);
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reply.dbcl_id = args.dbpcl_id;
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reply.type = this.type = db.get_type();
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reply.dbflags = db.get_flags_raw();
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// FIXME: not possible to work out byteorder from Java?
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reply.lorder = db.get_byteswapped() ? 4321 : 1234;
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reply.status = 0;
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}
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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} catch(FileNotFoundException e) {
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e.printStackTrace(DbServer.err);
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reply.status = Db.DB_NOTFOUND;
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}
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// System.err.println("Db.open: reply.status = " + reply.status + ", reply.dbcl_id = " + reply.dbcl_id);
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}
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public void pget(DbDispatcher server,
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__db_pget_msg args, __db_pget_reply reply)
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{
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try {
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RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
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DbTxn txn = (rtxn != null) ? rtxn.txn : null;
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Dbt skey = new Dbt(args.skeydata);
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skey.set_dlen(args.skeydlen);
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skey.set_doff(args.skeydoff);
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skey.set_ulen(args.skeyulen);
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skey.set_flags(Db.DB_DBT_MALLOC |
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(args.skeyflags & Db.DB_DBT_PARTIAL));
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Dbt pkey = new Dbt(args.pkeydata);
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pkey.set_dlen(args.pkeydlen);
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pkey.set_doff(args.pkeydoff);
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pkey.set_ulen(args.pkeyulen);
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pkey.set_flags(Db.DB_DBT_MALLOC |
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(args.pkeyflags & Db.DB_DBT_PARTIAL));
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Dbt data = new Dbt(args.datadata);
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data.set_dlen(args.datadlen);
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data.set_doff(args.datadoff);
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data.set_ulen(args.dataulen);
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data.set_flags(Db.DB_DBT_MALLOC |
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(args.dataflags & Db.DB_DBT_PARTIAL));
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db.pget(txn, skey, pkey, data, args.flags);
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if (skey.get_data() == args.skeydata ||
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skey.get_data().length != skey.get_size()) {
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reply.skeydata = new byte[skey.get_size()];
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System.arraycopy(skey.get_data(), 0, reply.skeydata, 0, skey.get_size());
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} else
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reply.skeydata = skey.get_data();
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if (pkey.get_data() == args.pkeydata ||
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pkey.get_data().length != pkey.get_size()) {
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reply.pkeydata = new byte[pkey.get_size()];
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System.arraycopy(pkey.get_data(), 0, reply.pkeydata, 0, pkey.get_size());
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} else
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reply.pkeydata = pkey.get_data();
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if (data.get_data() == args.datadata ||
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data.get_data().length != data.get_size()) {
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reply.datadata = new byte[data.get_size()];
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System.arraycopy(data.get_data(), 0, reply.datadata, 0, data.get_size());
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} else
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reply.datadata = data.get_data();
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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reply.skeydata = reply.pkeydata = reply.datadata = empty;
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}
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}
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public void put(DbDispatcher server,
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__db_put_msg args, __db_put_reply reply)
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{
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try {
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RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
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DbTxn txn = (rtxn != null) ? rtxn.txn : null;
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Dbt key = new Dbt(args.keydata);
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key.set_dlen(args.keydlen);
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key.set_doff(args.keydoff);
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key.set_ulen(args.keyulen);
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key.set_flags(Db.DB_DBT_MALLOC |
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(args.keyflags & Db.DB_DBT_PARTIAL));
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Dbt data = new Dbt(args.datadata);
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data.set_dlen(args.datadlen);
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data.set_doff(args.datadoff);
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data.set_ulen(args.dataulen);
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data.set_flags(args.dataflags);
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reply.status = db.put(txn, key, data, args.flags);
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/*
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* If the client did a DB_APPEND, set up key in reply.
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* Otherwise just status.
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*/
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if ((args.flags & Db.DB_APPEND) != 0) {
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if (key.get_data() == args.keydata ||
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key.get_data().length != key.get_size()) {
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reply.keydata = new byte[key.get_size()];
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System.arraycopy(key.get_data(), 0, reply.keydata, 0, key.get_size());
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} else
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reply.keydata = key.get_data();
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} else
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reply.keydata = empty;
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} catch(DbException e) {
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reply.keydata = empty;
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reply.status = e.get_errno();
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DbServer.err.println("Exception, setting status to " + reply.status);
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e.printStackTrace(DbServer.err);
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}
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}
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public void remove(DbDispatcher server,
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__db_remove_msg args, __db_remove_reply reply)
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{
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try {
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args.name = (args.name.length() > 0) ? args.name : null;
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args.subdb = (args.subdb.length() > 0) ? args.subdb : null;
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db.remove(args.name, args.subdb, args.flags);
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db = null;
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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} catch(FileNotFoundException e) {
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e.printStackTrace(DbServer.err);
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reply.status = Db.DB_NOTFOUND;
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} finally {
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server.delDb(this);
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}
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}
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public void rename(DbDispatcher server,
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__db_rename_msg args, __db_rename_reply reply)
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{
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try {
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args.name = (args.name.length() > 0) ? args.name : null;
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args.subdb = (args.subdb.length() > 0) ? args.subdb : null;
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args.newname = (args.newname.length() > 0) ? args.newname : null;
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db.rename(args.name, args.subdb, args.newname, args.flags);
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db = null;
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reply.status = 0;
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} catch(DbException e) {
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e.printStackTrace(DbServer.err);
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reply.status = e.get_errno();
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} catch(FileNotFoundException e) {
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e.printStackTrace(DbServer.err);
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reply.status = Db.DB_NOTFOUND;
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} finally {
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server.delDb(this);
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}
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}
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public void set_bt_maxkey(DbDispatcher server,
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__db_bt_maxkey_msg args, __db_bt_maxkey_reply reply)
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{
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try {
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db.set_bt_maxkey(args.maxkey);
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reply.status = 0;
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} catch(DbException e) {
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|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_bt_minkey(DbDispatcher server,
|
|
__db_bt_minkey_msg args, __db_bt_minkey_reply reply)
|
|
{
|
|
try {
|
|
db.set_bt_minkey(args.minkey);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_encrypt(DbDispatcher server,
|
|
__db_encrypt_msg args, __db_encrypt_reply reply)
|
|
{
|
|
try {
|
|
db.set_encrypt(args.passwd, args.flags);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_flags(DbDispatcher server,
|
|
__db_flags_msg args, __db_flags_reply reply)
|
|
{
|
|
try {
|
|
// DbServer.err.println("Calling db.setflags(" + Integer.toHexString(args.flags) + ")");
|
|
db.set_flags(args.flags);
|
|
setflags |= args.flags;
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_h_ffactor(DbDispatcher server,
|
|
__db_h_ffactor_msg args, __db_h_ffactor_reply reply)
|
|
{
|
|
try {
|
|
db.set_h_ffactor(args.ffactor);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_h_nelem(DbDispatcher server,
|
|
__db_h_nelem_msg args, __db_h_nelem_reply reply)
|
|
{
|
|
try {
|
|
db.set_h_nelem(args.nelem);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_lorder(DbDispatcher server,
|
|
__db_lorder_msg args, __db_lorder_reply reply)
|
|
{
|
|
try {
|
|
db.set_lorder(args.lorder);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_pagesize(DbDispatcher server,
|
|
__db_pagesize_msg args, __db_pagesize_reply reply)
|
|
{
|
|
try {
|
|
db.set_pagesize(args.pagesize);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_q_extentsize(DbDispatcher server,
|
|
__db_extentsize_msg args, __db_extentsize_reply reply)
|
|
{
|
|
try {
|
|
db.set_q_extentsize(args.extentsize);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_re_delim(DbDispatcher server,
|
|
__db_re_delim_msg args, __db_re_delim_reply reply)
|
|
{
|
|
try {
|
|
db.set_re_delim(args.delim);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_re_len(DbDispatcher server,
|
|
__db_re_len_msg args, __db_re_len_reply reply)
|
|
{
|
|
try {
|
|
db.set_re_len(args.len);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void set_re_pad(DbDispatcher server,
|
|
__db_re_pad_msg args, __db_re_pad_reply reply)
|
|
{
|
|
try {
|
|
db.set_re_pad(args.pad);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void stat(DbDispatcher server,
|
|
__db_stat_msg args, __db_stat_reply reply)
|
|
{
|
|
try {
|
|
Object raw_stat = db.stat(args.flags);
|
|
|
|
if (raw_stat instanceof DbHashStat) {
|
|
DbHashStat hs = (DbHashStat)raw_stat;
|
|
int[] raw_stats = {
|
|
hs.hash_magic, hs.hash_version,
|
|
hs.hash_metaflags, hs.hash_nkeys,
|
|
hs.hash_ndata, hs.hash_pagesize,
|
|
hs.hash_ffactor, hs.hash_buckets,
|
|
hs.hash_free, hs.hash_bfree,
|
|
hs.hash_bigpages, hs.hash_big_bfree,
|
|
hs.hash_overflows, hs.hash_ovfl_free,
|
|
hs.hash_dup, hs.hash_dup_free
|
|
};
|
|
reply.stats = raw_stats;
|
|
} else if (raw_stat instanceof DbQueueStat) {
|
|
DbQueueStat qs = (DbQueueStat)raw_stat;
|
|
int[] raw_stats = {
|
|
qs.qs_magic, qs.qs_version,
|
|
qs.qs_metaflags, qs.qs_nkeys,
|
|
qs.qs_ndata, qs.qs_pagesize,
|
|
qs.qs_extentsize, qs.qs_pages,
|
|
qs.qs_re_len, qs.qs_re_pad,
|
|
qs.qs_pgfree, qs.qs_first_recno,
|
|
qs.qs_cur_recno
|
|
};
|
|
reply.stats = raw_stats;
|
|
} else if (raw_stat instanceof DbBtreeStat) {
|
|
DbBtreeStat bs = (DbBtreeStat)raw_stat;
|
|
int[] raw_stats = {
|
|
bs.bt_magic, bs.bt_version,
|
|
bs.bt_metaflags, bs.bt_nkeys,
|
|
bs.bt_ndata, bs.bt_pagesize,
|
|
bs.bt_maxkey, bs.bt_minkey,
|
|
bs.bt_re_len, bs.bt_re_pad,
|
|
bs.bt_levels, bs.bt_int_pg,
|
|
bs.bt_leaf_pg, bs.bt_dup_pg,
|
|
bs.bt_over_pg, bs.bt_free,
|
|
bs.bt_int_pgfree, bs.bt_leaf_pgfree,
|
|
bs.bt_dup_pgfree, bs.bt_over_pgfree
|
|
};
|
|
reply.stats = raw_stats;
|
|
} else
|
|
throw new DbException("Invalid return type from db.stat()", Db.DB_NOTFOUND);
|
|
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
reply.stats = new int[0];
|
|
}
|
|
}
|
|
|
|
public void sync(DbDispatcher server,
|
|
__db_sync_msg args, __db_sync_reply reply)
|
|
{
|
|
try {
|
|
db.sync(args.flags);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
|
|
public void truncate(DbDispatcher server,
|
|
__db_truncate_msg args, __db_truncate_reply reply)
|
|
{
|
|
try {
|
|
RpcDbTxn rtxn = server.getTxn(args.txnpcl_id);
|
|
DbTxn txn = (rtxn != null) ? rtxn.txn : null;
|
|
reply.count = db.truncate(txn, args.flags);
|
|
reply.status = 0;
|
|
} catch(DbException e) {
|
|
e.printStackTrace(DbServer.err);
|
|
reply.status = e.get_errno();
|
|
}
|
|
}
|
|
}
|