Storing/getting maximum LSN of the record which parts written

in the file to the file header.


storage/maria/ma_loghandler.h:
  Getting maximum LSN of the record which parts written
  in the file to the file header.
storage/maria/unittest/Makefile.am:
  Test suite for getting max LSN added.
storage/maria/unittest/ma_test_loghandler_first_lsn-t.c:
  Spelling fixed.
  Cleanup fixed.
storage/maria/unittest/ma_test_loghandler_noflush-t.c:
  Cleanup fixed.
storage/maria/unittest/ma_test_loghandler_max_lsn-t.c:
  New BitKeeper file ``storage/maria/unittest/ma_test_loghandler_max_lsn-t.c''

storage/maria/ma_loghandler.h

@@ -250,6 +250,7 @@ extern my_bool translog_init_scanner(LSN lsn,
 
 extern int translog_read_next_record_header(TRANSLOG_SCANNER_DATA *scanner,
                                             TRANSLOG_HEADER_BUFFER *buff);
+extern LSN translog_get_file_max_lsn_stored(ulong file);
 extern my_bool translog_lock();
 extern my_bool translog_unlock();
 extern void translog_lock_assert_owner();

storage/maria/unittest/Makefile.am

@@ -44,7 +44,8 @@ noinst_PROGRAMS =	ma_control_file-t trnman-t lockman2-t \
 			ma_test_loghandler_pagecache-t \
 			ma_test_loghandler_long-t-big \
 			ma_test_loghandler_noflush-t \
-			ma_test_loghandler_first_lsn-t
+			ma_test_loghandler_first_lsn-t \
+                        ma_test_loghandler_max_lsn-t
 
 ma_test_loghandler_t_SOURCES = ma_test_loghandler-t.c ma_maria_log_cleanup.c
 ma_test_loghandler_multigroup_t_SOURCES = ma_test_loghandler_multigroup-t.c ma_maria_log_cleanup.c
@@ -54,6 +55,7 @@ ma_test_loghandler_long_t_big_SOURCES = ma_test_loghandler-t.c ma_maria_log_clea
 ma_test_loghandler_long_t_big_CPPFLAGS = -DLONG_LOG_TEST
 ma_test_loghandler_noflush_t_SOURCES = ma_test_loghandler_noflush-t.c ma_maria_log_cleanup.c
 ma_test_loghandler_first_lsn_t_SOURCES = ma_test_loghandler_first_lsn-t.c ma_maria_log_cleanup.c
+ma_test_loghandler_max_lsn_t_SOURCES = ma_test_loghandler_max_lsn-t.c ma_maria_log_cleanup.c
 
 ma_pagecache_single_src =	ma_pagecache_single.c test_file.c
 ma_pagecache_consist_src =	ma_pagecache_consist.c test_file.c

storage/maria/unittest/ma_test_loghandler_first_lsn-t.c

@@ -89,7 +89,7 @@ int main(int argc __attribute__((unused)), char *argv[])
   first_lsn= translog_first_lsn_in_log();
   if (first_lsn != LSN_IMPOSSIBLE)
   {
-    fprintf(stderr, "Incorrect first lsn responce (%lu,0x%lx).",
+    fprintf(stderr, "Incorrect first lsn response (%lu,0x%lx).",
             (ulong) LSN_FILE_NO(first_lsn),
             (ulong) LSN_OFFSET(first_lsn));
     translog_destroy();
@@ -143,8 +143,7 @@ int main(int argc __attribute__((unused)), char *argv[])
   translog_destroy();
   end_pagecache(&pagecache, 1);
   ma_control_file_end();
-  my_delete(CONTROL_FILE_BASE_NAME, MYF(0));
-  my_delete(first_translog_file, MYF(0));
-
+  if (maria_log_remove())
+    exit(1);
   exit(0);
 }

storage/maria/unittest/ma_test_loghandler_max_lsn-t.c

+#include "../maria_def.h"
+#include <stdio.h>
+#include <errno.h>
+#include <tap.h>
+#include "../trnman.h"
+
+extern my_bool maria_log_remove();
+
+#ifndef DBUG_OFF
+static const char *default_dbug_option;
+#endif
+
+#define PCACHE_SIZE (1024*1024*10)
+#define PCACHE_PAGE TRANSLOG_PAGE_SIZE
+#define LOG_FILE_SIZE (4*1024L*1024L)
+#define LOG_FLAGS 0
+
+
+int main(int argc __attribute__((unused)), char *argv[])
+{
+  ulong i;
+  uint pagen;
+  uchar long_tr_id[6];
+  PAGECACHE pagecache;
+  LSN lsn, max_lsn, last_lsn= LSN_IMPOSSIBLE;
+  MY_STAT st;
+  LEX_STRING parts[TRANSLOG_INTERNAL_PARTS + 1];
+
+  MY_INIT(argv[0]);
+
+  plan(2);
+
+  bzero(&pagecache, sizeof(pagecache));
+  maria_data_root= ".";
+  if (maria_log_remove())
+    exit(1);
+
+  bzero(long_tr_id, 6);
+#ifndef DBUG_OFF
+#if defined(__WIN__)
+  default_dbug_option= "d:t:i:O,\\ma_test_loghandler.trace";
+#else
+  default_dbug_option= "d:t:i:o,/tmp/ma_test_loghandler.trace";
+#endif
+  if (argc > 1)
+  {
+    DBUG_SET(default_dbug_option);
+    DBUG_SET_INITIAL(default_dbug_option);
+  }
+#endif
+
+  if (ma_control_file_create_or_open(TRUE))
+  {
+    fprintf(stderr, "Can't init control file (%d)\n", errno);
+    exit(1);
+  }
+  if ((pagen= init_pagecache(&pagecache, PCACHE_SIZE, 0, 0,
+                             PCACHE_PAGE)) == 0)
+  {
+    fprintf(stderr, "Got error: init_pagecache() (errno: %d)\n", errno);
+    exit(1);
+  }
+  if (translog_init(".", LOG_FILE_SIZE, 50112, 0, &pagecache, LOG_FLAGS))
+  {
+    fprintf(stderr, "Can't init loghandler (%d)\n", errno);
+    translog_destroy();
+    exit(1);
+  }
+  example_loghandler_init();
+
+  max_lsn= translog_get_file_max_lsn_stored(1);
+  if (max_lsn == 1)
+  {
+    fprintf(stderr, "Error reading the first log file.");
+    translog_destroy();
+    exit(1);
+  }
+  if (max_lsn != LSN_IMPOSSIBLE)
+  {
+    fprintf(stderr, "Incorrect first lsn response (%lu,0x%lx).",
+            (ulong) LSN_FILE_NO(max_lsn),
+            (ulong) LSN_OFFSET(max_lsn));
+    translog_destroy();
+    exit(1);
+  }
+  ok(1, "Empty log response");
+
+
+  /* write more then 1 file */
+  int4store(long_tr_id, 0);
+  parts[TRANSLOG_INTERNAL_PARTS + 0].str= (char*)long_tr_id;
+  parts[TRANSLOG_INTERNAL_PARTS + 0].length= 6;
+  for(i= 0; i < LOG_FILE_SIZE/6; i++)
+  {
+    if (translog_write_record(&lsn,
+                              LOGREC_FIXED_RECORD_0LSN_EXAMPLE,
+                              &dummy_transaction_object, NULL, 6,
+                              TRANSLOG_INTERNAL_PARTS + 1,
+                              parts, NULL))
+    {
+      fprintf(stderr, "Can't write record #%lu\n", (ulong) 0);
+      translog_destroy();
+      exit(1);
+    }
+    if (LSN_FILE_NO(lsn) == 1)
+      last_lsn= lsn;
+  }
+
+
+  max_lsn= translog_get_file_max_lsn_stored(1);
+  if (max_lsn == 1)
+  {
+    fprintf(stderr, "Error reading the first log file\n");
+    translog_destroy();
+    exit(1);
+  }
+  if (max_lsn == LSN_IMPOSSIBLE)
+  {
+    fprintf(stderr, "Isn't first file still finished?!!\n");
+    translog_destroy();
+    exit(1);
+  }
+  if (max_lsn != last_lsn)
+  {
+    fprintf(stderr, "Incorrect max lsn: (%lu,0x%lx)  "
+            " last lsn on first file: (%lu,0x%lx)\n",
+            (ulong) LSN_FILE_NO(max_lsn),
+            (ulong) LSN_OFFSET(max_lsn),
+            (ulong) LSN_FILE_NO(last_lsn),
+            (ulong) LSN_OFFSET(last_lsn));
+    translog_destroy();
+    exit(1);
+  }
+
+  ok(1, "First file max LSN");
+
+  translog_destroy();
+  end_pagecache(&pagecache, 1);
+  ma_control_file_end();
+  if (maria_log_remove())
+    exit(1);
+  exit(0);
+}

storage/maria/unittest/ma_test_loghandler_noflush-t.c

@@ -125,8 +125,8 @@ err:
   translog_destroy();
   end_pagecache(&pagecache, 1);
   ma_control_file_end();
-  my_delete(CONTROL_FILE_BASE_NAME, MYF(0));
-  my_delete(first_translog_file, MYF(0));
+  if (maria_log_remove())
+    exit(1);
 
   exit(rc);
 }