/*-
 * Public Domain 2014-2016 MongoDB, Inc.
 * Public Domain 2008-2014 WiredTiger, Inc.
 *
 * This is free and unencumbered software released into the public domain.
 *
 * Anyone is free to copy, modify, publish, use, compile, sell, or
 * distribute this software, either in source code form or as a compiled
 * binary, for any purpose, commercial or non-commercial, and by any
 * means.
 *
 * In jurisdictions that recognize copyright laws, the author or authors
 * of this software dedicate any and all copyright interest in the
 * software to the public domain. We make this dedication for the benefit
 * of the public at large and to the detriment of our heirs and
 * successors. We intend this dedication to be an overt act of
 * relinquishment in perpetuity of all present and future rights to this
 * software under copyright law.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

#include "format.h"

void
wts_rebalance(void)
{
	WT_CONNECTION *conn;
	WT_SESSION *session;
	char cmd[1024];

	if (g.c_rebalance == 0)
		return;

	track("rebalance", 0ULL, NULL);

	/* Dump the current object. */
	testutil_check(__wt_snprintf(cmd, sizeof(cmd),
	    ".." DIR_DELIM_STR ".." DIR_DELIM_STR "wt"
	    " -h %s dump -f %s/rebalance.orig %s",
	    g.home, g.home, g.uri));
	testutil_checkfmt(system(cmd), "command failed: %s", cmd);

	/* Rebalance, then verify the object. */
	wts_reopen();
	conn = g.wts_conn;
	testutil_check(conn->open_session(conn, NULL, NULL, &session));
	if (g.logging != 0)
		(void)g.wt_api->msg_printf(g.wt_api, session,
		    "=============== rebalance start ===============");

	testutil_checkfmt(
	    session->rebalance(session, g.uri, NULL), "%s", g.uri);

	if (g.logging != 0)
		(void)g.wt_api->msg_printf(g.wt_api, session,
		    "=============== rebalance stop ===============");
	testutil_check(session->close(session, NULL));

	wts_verify("post-rebalance verify");
	wts_close();

	testutil_check(__wt_snprintf(cmd, sizeof(cmd),
	    ".." DIR_DELIM_STR ".." DIR_DELIM_STR "wt"
	    " -h %s dump -f %s/rebalance.new %s",
	    g.home, g.home, g.uri));
	testutil_checkfmt(system(cmd), "command failed: %s", cmd);

	/* Compare the old/new versions of the object. */
#ifdef _WIN32
	testutil_check(__wt_snprintf(cmd, sizeof(cmd),
	    "fc /b %s\\rebalance.orig %s\\rebalance.new > NUL",
	    g.home, g.home));
#else
	testutil_check(__wt_snprintf(cmd, sizeof(cmd),
	    "cmp %s/rebalance.orig %s/rebalance.new > /dev/null",
	    g.home, g.home));
#endif
	testutil_checkfmt(system(cmd), "command failed: %s", cmd);
}
