/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
/*======
This file is part of PerconaFT.


Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved.

    PerconaFT is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License, version 2,
    as published by the Free Software Foundation.

    PerconaFT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with PerconaFT.  If not, see <http://www.gnu.org/licenses/>.

----------------------------------------

    PerconaFT is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License, version 3,
    as published by the Free Software Foundation.

    PerconaFT is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with PerconaFT.  If not, see <http://www.gnu.org/licenses/>.
======= */

#ident "Copyright (c) 2006, 2015, Percona and/or its affiliates. All rights reserved."

#include "test.h"
#include "cachetable-test.h"

bool flush_completed;
bool pf_called;

static void 
clone_callback(void* UU(value_data), void** cloned_value_data, long* clone_size, PAIR_ATTR* new_attr, bool UU(for_checkpoint), void* UU(write_extraargs))
{
    *cloned_value_data = (void *)1;
    *clone_size = 8;
    new_attr->is_valid = false;
}

static void
flush (
    CACHEFILE f __attribute__((__unused__)),
    int UU(fd),
    CACHEKEY k  __attribute__((__unused__)),
    void *v     __attribute__((__unused__)),
    void** UU(dd),
    void *e     __attribute__((__unused__)),
    PAIR_ATTR s      __attribute__((__unused__)),
    PAIR_ATTR* new_size      __attribute__((__unused__)),
    bool w      __attribute__((__unused__)),
    bool keep   __attribute__((__unused__)),
    bool c      __attribute__((__unused__)),
    bool UU(is_clone)
    ) 
{  
    if (is_clone) {
        usleep(2*1024*1024);
        flush_completed = true;
    }
}

static bool true_pf_req_callback(void* UU(ftnode_pv), void* UU(read_extraargs)) {
    if (pf_called) return false;
    return true;
}

static int true_pf_callback(void* UU(ftnode_pv), void* UU(dd), void* UU(read_extraargs), int UU(fd), PAIR_ATTR* sizep) {
    assert(flush_completed);
    pf_called = true;
    *sizep = make_pair_attr(9);
    return 0;
}


// this test verifies that a partial fetch will wait for a cloned pair to complete
// writing to disk
static void
cachetable_test (void) {
    const int test_limit = 12;
    int r;
    CACHETABLE ct;
    toku_cachetable_create(&ct, test_limit, ZERO_LSN, nullptr);
    const char *fname1 = TOKU_TEST_FILENAME;
    unlink(fname1);
    CACHEFILE f1;
    r = toku_cachetable_openf(&f1, ct, fname1, O_RDWR|O_CREAT, S_IRWXU|S_IRWXG|S_IRWXO); assert(r == 0);
    create_dummy_functions(f1);

    void* v1;
    long s1;
    CACHETABLE_WRITE_CALLBACK wc = def_write_callback(NULL);
    wc.clone_callback = clone_callback;
    wc.flush_callback = flush;
    
    r = toku_cachetable_get_and_pin(f1, make_blocknum(1), 1, &v1, &s1, wc, def_fetch, def_pf_req_callback, def_pf_callback, true, NULL);
    assert_zero(r);
    r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_DIRTY, make_pair_attr(8));
    assert_zero(r);

    flush_completed = false;
    CHECKPOINTER cp = toku_cachetable_get_checkpointer(ct);
    toku_cachetable_begin_checkpoint(cp, NULL);
    assert_zero(r);
    r = toku_cachetable_get_and_pin(f1, make_blocknum(1), 1, &v1, &s1, wc, def_fetch, def_pf_req_callback, def_pf_callback, true, NULL);
    assert_zero(r);
    r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_CLEAN, make_pair_attr(8));
    assert_zero(r);

    pf_called = false;
    r = toku_cachetable_get_and_pin(f1, make_blocknum(1), 1, &v1, &s1, wc, def_fetch, true_pf_req_callback, true_pf_callback, true, NULL);
    assert_zero(r);
    r = toku_test_cachetable_unpin(f1, make_blocknum(1), 1, CACHETABLE_CLEAN, make_pair_attr(8));
    assert_zero(r);
    assert(pf_called);

    toku_cachetable_end_checkpoint(
        cp, 
        NULL, 
        NULL,
        NULL
        );
    assert_zero(r);


    toku_cachetable_verify(ct);
    toku_cachefile_close(&f1, false, ZERO_LSN);
    toku_cachetable_close(&ct);


}

int
test_main(int argc, const char *argv[]) {
  default_parse_args(argc, argv);
  cachetable_test();
  return 0;
}
