/*---
This software is copyrighted by the Regents of the University of
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associated with the software unless explicitly disclaimed in
individual files.
                                                                                                                                  
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and that this notice is included verbatim in any distributions. No
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their authors and need not follow the licensing terms described here,
provided that the new terms are clearly indicated on the first page of
each file where they apply.
                                                                                                                                  
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ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION, OR ANY
DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
                                                                                                                                  
THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND
THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
                                                                                                                                  
GOVERNMENT USE: If you are acquiring this software on behalf of the
U.S. government, the Government shall have only "Restricted Rights" in
the software and related documentation as defined in the Federal
Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you are
acquiring the software on behalf of the Department of Defense, the
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authors grant the U.S. Government and others acting in its behalf
permission to use and distribute the software in accordance with the
terms specified in this license.
---*/
#include <config.h>
#include <check.h>
#include <stasis/transactional.h>


#include <stasis/logger/logger2.h>
#include <stasis/truncation.h>
#include "../../src/stasis/logger/logWriter.h"
#include "../check_includes.h"
#include <assert.h>

#define LOG_NAME   "check_blobRecovery.log"


#define ARRAY_SIZE 20321


static void arraySet(int * a, int mul) {
  int i; 

  for ( i = 0 ; i < ARRAY_SIZE; i++) {
    a[i]= mul*i;
  }
}


/** 
    @test
    Simple test: Insert some stuff.  Commit.  Call Tdeinit().  Call
    Tinit() (Which initiates recovery), and see if the stuff we
    inserted is still there.

    Only performs idempotent operations (Tset).
*/
START_TEST (recoverBlob__idempotent) {
  int xid; 


  int j[ARRAY_SIZE];
  int k[ARRAY_SIZE];

  recordid rid;
  Tinit();
  xid = Tbegin();
  
  rid = Talloc(xid, ARRAY_SIZE * sizeof(int));
  arraySet(j, 1);

  Tset(xid, rid, j);

  Tread(xid, rid, k);
  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)), "Get/Set broken?");

  arraySet(k, 12312);
 
  Tcommit(xid);

  xid = Tbegin();

  Tread(xid, rid, k);
  
  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)), "commit broken");

  Tcommit(xid);
  
  Tdeinit();

  Tinit();  /* Runs recoverBlob_.. */

  arraySet(k, 12312);

  xid = Tbegin(); 

  Tread(xid, rid, k);

  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)), "Recovery messed something up!");

  Tcommit(xid);

  Tdeinit();

}
END_TEST

/** 
    @test
    Simple test: Alloc a record, commit.  Call Tincrement on it, and
    remember its value and commit.  Then, call Tdeinit() and Tinit()
    (Which initiates recovery), and see if the value changes.  

    @todo:  Until we have a non-idempotent operation on blobs, this test can't be written.
*/
/* START_TEST (recoverBlob__exactlyOnce) {
  
  int xid; 
  int j;
  int k;
  recordid rid;
  / *  if(1) {
    return;
    } * /
  fail_unless(0, "Need to write this test...");

  Tinit();
  xid = Tbegin();
  
  rid = Talloc(xid, sizeof(int));

  Tincrement(xid, rid);

  Tread(xid, rid, &j);
 
  Tcommit(xid);

  xid = Tbegin();

  Tread(xid, rid, &k);
  
  fail_unless(j == k, "Get/Set broken?");

  Tcommit(xid);
  
  Tdeinit();

  Tinit();  / * Runs recovery.. * /

  k = 12312;

  xid = Tbegin(); 

  Tread(xid, rid, &k);

  fail_unless(j == k, "Recovery messed something up!");

  Tcommit(xid);

  Tdeinit();



}
END_TEST

*/
/** 
    @test
    Makes sure that aborted idempotent operations are correctly undone.
*/
START_TEST (recoverBlob__idempotentAbort) {
  
  int xid; 
  int j[ARRAY_SIZE];
  int k[ARRAY_SIZE];
  recordid rid;

  Tinit();
  xid = Tbegin();
  
  rid = Talloc(xid, ARRAY_SIZE * sizeof(int));

  arraySet(j, 1);
 
  Tset(xid, rid, j);

  arraySet(k, 2);
  Tread(xid, rid, k);
 
  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)), "Get/set broken?!");

  Tcommit(xid);

  xid = Tbegin();
  arraySet(k, 3);
  Tread(xid, rid, k);
  
  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)), "commit broken?");

  Tcommit(xid);
  xid = Tbegin();
  arraySet(k, 2);

  Tset(xid, rid, k);

  arraySet(k, 4);
  Tread(xid, rid, k);

  arraySet(j, 2);

  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)),NULL);

  Tabort(xid);

  xid = Tbegin();
  arraySet(j, 1);
  arraySet(k, 4);

  Tread(xid, rid, &k);

  Tabort(xid);

  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)),"Didn't abort!");

  Tdeinit();

  Tinit();  /* Runs recovery.. */

  arraySet(k, 12312);

  xid = Tbegin(); 

  Tread(xid, rid, k);

  fail_unless(!memcmp(j, k, ARRAY_SIZE * sizeof(int)),"recovery messed something up.");

  Tcommit(xid);

  Tdeinit();

}
END_TEST


/** 
    @test Makes sure that aborted non-idempotent operations are
    correctly undone.  Curently, we don't support such operations on
    blobs, so this test is not implemented.

    @todo  logical operations on blobs.
*/
/* START_TEST (recoverBlob__exactlyOnceAbort) {
  
  int xid; 
  int j;
  int k;
  recordid rid;
  / *  if(1) 
    return ;
  * /
  fail_unless(0, "Need to write this test...");

  Tinit();
  xid = Tbegin();
  
  rid = Talloc(xid, sizeof(int));
  j = 1;
  Tincrement(xid, rid);

  Tread(xid, rid, &j);
 
  Tcommit(xid);

  xid = Tbegin();

  Tincrement(xid, rid);
  Tread(xid, rid, &k);
  fail_unless(j == k-1, NULL);
  Tabort(xid);
  xid = Tbegin();
  Tread(xid, rid, &k);
  fail_unless(j == k, "didn't abort?");
  Tcommit(xid);

  Tdeinit();
  Tinit();

  xid = Tbegin();

  Tread(xid, rid, &k);
  fail_unless(j == k, "Recovery didn't abort correctly");
  Tcommit(xid);
  Tdeinit();

}
END_TEST
*/
/**
   @test 
   Check the CLR mechanism with an aborted logical operation, and multipl Tinit()/Tdeinit() cycles.

   @todo Devise a way of implementing this for blobs. 
*/
/*START_TEST(recoverBlob__clr) {
  recordid rid;
  int xid;
  int j;
  int k;

  / *  if(1) return; * /

  fail_unless(0, "Need to write this test...");

  DEBUG("\n\nStart CLR test\n\n");

  Tinit();
  
  xid = Tbegin();

  rid = Talloc(xid, sizeof(int));
	       
  Tread(xid, rid, &j);

  Tincrement(xid, rid);

  Tabort(xid); 
  
  xid = Tbegin(); 
  
  Tread(xid, rid, &k);
  
  Tcommit(xid);
  
  fail_unless(j == k, NULL); 

  Tdeinit(); 


  Tinit();
  Tdeinit();

  Tinit();

  xid = Tbegin();

  Tread(xid, rid, &k);

  Tcommit(xid);

  fail_unless(j == k, NULL);

  Tdeinit();
  Tinit();

  xid = Tbegin();

  Tread(xid, rid, &k);

  Tcommit(xid);

  fail_unless(j == k, NULL);

  Tdeinit();


} END_TEST
*/
extern int numActiveXactions;
/** 
    @test

    Tests the undo phase of recovery by simulating a crash, and calling Tinit(). 

    @todo Really should check logical operations, if they are ever supported for blobs. 

*/
START_TEST(recoverBlob__crash) {
  int xid;
  recordid rid;
  int j[ARRAY_SIZE];
  int k[ARRAY_SIZE];

  Tinit();
  
  xid = Tbegin();
  rid = Talloc(xid, sizeof(int)* ARRAY_SIZE);

  arraySet(j, 3);

  Tset(xid, rid, &j);

  arraySet(j, 9);

  Tset(xid, rid, &j);

  
  /* RID = 9. */

  Tread(xid, rid, &j);

  arraySet(k, 9);
  fail_unless(!memcmp(j,k,ARRAY_SIZE), "set not working?");


  Tcommit(xid);
  xid = Tbegin();
  
  arraySet(k, 6);

  Tset(xid, rid, &k);

  /* RID = 6. */

  Tread(xid, rid, &j);
  fail_unless(!memcmp(j,k,ARRAY_SIZE), NULL);
  TuncleanShutdown();

  Tinit();

  Tread(xid, rid, &j);

  arraySet(k, 9);

  fail_unless(!memcmp(j,k,ARRAY_SIZE), "Recovery didn't roll back in-progress xact!");

  Tdeinit();
  Tinit();

  Tread(xid, rid, &j);

  assert(!memcmp(j,k,ARRAY_SIZE * sizeof(int)));

  fail_unless(!memcmp(j,k,ARRAY_SIZE), "Recovery failed on second re-open.");

  Tdeinit();

} END_TEST
/**
   @test Tests recovery when more than one transaction is in progress
   at the time of the crash.  This test is interesting because blob
   operations from multiple transactions could hit the same page.

   @todo implement this sometime... 
*/
START_TEST (recoverBlob__multiple_xacts) {
  int xid1, xid2, xid3, xid4;
  recordid rid1, rid2, rid3, rid4;
  int j1, j2, j3, j4, k;

  Tinit();
  j1 = 1;
  j2 = 2; 
  j3 = 4;
  j4 = 3;
  xid1 = Tbegin();
  rid1 = Talloc(xid1, sizeof(int));

  xid2 = Tbegin();

  xid3 = Tbegin();

  Tset(xid1, rid1, &j1);
  
  rid2 = Talloc(xid2, sizeof(int));
  rid3 = Talloc(xid3, sizeof(int));
  Tread(xid3, rid3, &k);
  
  Tset(xid3, rid3, &j3);

  Tcommit(xid3);
  xid3 = Tbegin();
  
  Tincrement(xid3, rid3);
  Tset(xid2, rid2, &j2);
  Tcommit(xid1);
  

  xid4 = Tbegin();
  Tcommit(xid2);
  
  rid4 = Talloc(xid4, sizeof(int));
  Tset(xid4, rid4, &j4);
  Tincrement(xid4, rid4);
  Tcommit(xid4);

  xid1 = Tbegin();
  k = 100000;
  Tset(xid1, rid1,&k);
  xid2 = Tbegin();
  Tdecrement(xid2, rid2);

  Tdecrement(xid2, rid2);
  Tdecrement(xid2, rid2);
  Tdecrement(xid2, rid2);
  Tdecrement(xid2, rid2);
  Tincrement(xid1, rid1);
  Tset(xid1, rid1,&k);
  TuncleanShutdown();

  Tinit();
  Tdeinit();

  Tinit();
  xid1 = Tbegin();
  xid2 = Tbegin();
  xid3 = Tbegin();
  xid4 = Tbegin();

  Tread(xid1, rid1, &j1);
  Tread(xid2, rid2, &j2);
  Tread(xid3, rid3, &j3);
  Tread(xid4, rid4, &j4);

  fail_unless(j1 == 1, NULL);
  fail_unless(j2 == 2, NULL);
  fail_unless(j3 == 4, NULL);
  fail_unless(j4 == 4, NULL);
  Tdeinit();
} END_TEST


/** 
  Add suite declarations here
*/
Suite * check_suite(void) {
  Suite *s = suite_create("recovery_suite");
  /* Begin a new test */
  TCase *tc = tcase_create("recovery");

 tcase_set_timeout(tc, 0); // disable timeouts
 if(LOG_TO_MEMORY != loggerType) { 
  /* void * foobar; */  /* used to supress warnings. */
  /* Sub tests are added, one per line, here */
  tcase_add_test(tc, recoverBlob__idempotent);
  /*  tcase_add_test(tc, recoverBlob__exactlyOnce); 
      foobar = (void*)&recoverBlob__exactlyOnce; */

  tcase_add_test(tc, recoverBlob__idempotentAbort);
  /*  tcase_add_test(tc, recoverBlob__exactlyOnceAbort);
      foobar = (void*)&recoverBlob__exactlyOnceAbort; 

  tcase_add_test(tc, recoverBlob__clr);
  foobar = (void*)&recoverBlob__clr; */

  tcase_add_test(tc, recoverBlob__crash);
  tcase_add_test(tc, recoverBlob__multiple_xacts); 
    /*foobar = (void*)&recoverBlob__multiple_xacts;   */
 }
  /* --------------------------------------------- */
  tcase_add_checked_fixture(tc, setup, teardown);
  suite_add_tcase(s, tc);

  return s;
}

#include "../check_setup.h"