Adding Libgfdb to GlusterFS

*************************************************************************
			Libgfdb						|
*************************************************************************
Libgfdb provides abstract mechanism to record extra/rich metadata
required for data maintenance, such as data tiering/classification.
It provides consumer with API for recording and querying, keeping
the consumer abstracted from the data store used beneath for storing data.
It works in a plug-and-play model, where data stores can be plugged-in.
Presently we have plugin for Sqlite3. In the future will provide recording
and querying performance optimizer. In the current implementation the schema
of metadata is fixed.

Schema:
~~~~~~
      GF_FILE_TB Table:
      ~~~~~~~~~~~~~~~~~
      This table has one entry per file inode. It holds the metadata required to
      make decisions in data maintenance.
      GF_ID (Primary key)	: File GFID (Universal Unique IDentifier in the namespace)
      W_SEC, W_MSEC 		: Write wind time in sec & micro-sec
      UW_SEC, UW_MSEC		: Write un-wind time in sec & micro-sec
      W_READ_SEC, W_READ_MSEC 	: Read wind time in sec & micro-sec
      UW_READ_SEC, UW_READ_MSEC : Read un-wind time in sec & micro-sec
      WRITE_FREQ_CNTR INTEGER	: Write Frequency Counter
      READ_FREQ_CNTR INTEGER	: Read Frequency Counter

      GF_FLINK_TABLE:
      ~~~~~~~~~~~~~~
      This table has all the hardlinks to a file inode.
      GF_ID		: File GFID               (Composite Primary Key)``|
      GF_PID		: Parent Directory GFID  (Composite Primary Key)   |-> Primary Key
      FNAME 		: File Base Name          (Composite Primary Key)__|
      FPATH 		: File Full Path (Its redundant for now, this will go)
      W_DEL_FLAG 	: This Flag is used for crash consistancy, when a link is unlinked.
                  	  i.e Set to 1 during unlink wind and during unwind this record
                          is deleted
      LINK_UPDATE 	: This Flag is used when a link is changed i.e rename.
                          Set to 1 when rename wind and set to 0 in rename unwind

Libgfdb API:
~~~~~~~~~~~
Refer libglusterfs/src/gfdb/gfdb_data_store.h

Change-Id: I2e9fbab3878ce630a7f41221ef61017dc43db11f
BUG: 1194753
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Signed-off-by: Dan Lambright <dlambrig@redhat.com>
Signed-off-by: Joseph Fernandes <josferna@redhat.com>
Reviewed-on: http://review.gluster.org/9683
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/libglusterfs/src/gfdb/Makefile.am b/libglusterfs/src/gfdb/Makefile.am
new file mode 100644
index 00000000000..8c48463aed3
--- /dev/null
+++ b/libglusterfs/src/gfdb/Makefile.am
@@ -0,0 +1,42 @@
+libgfdb_la_CFLAGS = -Wall $(GF_CFLAGS) $(GF_DARWIN_LIBGLUSTERFS_CFLAGS) \
+  -DDATADIR=\"$(localstatedir)\"
+
+libgfdb_la_CPPFLAGS = $(GF_CPPFLAGS) -D__USE_FILE_OFFSET64 -fpic \
+  -I$(top_srcdir)/libglusterfs/src \
+  -DDATADIR=\"$(localstatedir)\"
+
+libgfdb_la_LIBADD = $(top_builddir)/libglusterfs/src/libglusterfs.la -lsqlite3
+
+libgfdb_la_LDFLAGS = $(GF_LDFLAGS) -version-info $(LIBGLUSTERFS_LT_VERSION)
+
+libgfdbdir = $(includedir)/glusterfs/gfdb
+
+if BUILD_GFDB
+ lib_LTLIBRARIES = libgfdb.la
+endif
+
+CONTRIB_BUILDDIR = $(top_builddir)/contrib
+
+libgfdb_la_SOURCES = gfdb_data_store.c gfdb_sqlite3_helper.c\
+   gfdb_sqlite3.c \
+   $(CONTRIBDIR)/uuid/clear.c \
+   $(CONTRIBDIR)/uuid/copy.c $(CONTRIBDIR)/uuid/gen_uuid.c \
+   $(CONTRIBDIR)/uuid/pack.c $(CONTRIBDIR)/uuid/parse.c \
+   $(CONTRIBDIR)/uuid/unparse.c $(CONTRIBDIR)/uuid/uuid_time.c \
+   $(CONTRIBDIR)/uuid/compare.c $(CONTRIBDIR)/uuid/isnull.c \
+   $(CONTRIBDIR)/uuid/unpack.c
+
+noinst_HEADERS =  gfdb_data_store.h gfdb_data_store_types.h gfdb_sqlite3_helper.h\
+   gfdb_sqlite3.h gfdb_mem-types.h \
+   $(CONTRIBDIR)/uuid/uuidd.h \
+   $(CONTRIBDIR)/uuid/uuid.h $(CONTRIBDIR)/uuid/uuid.h \
+   $(CONTRIB_BUILDDIR)/uuid/uuid_types.h
+
+libgfdb_HEADERS = gfdb_data_store.h gfdb_data_store_types.h \
+                gfdb_sqlite3.h gfdb_mem-types.h gfdb_sqlite3_helper.c
+
+CLEANFILES =
+CONFIG_CLEAN_FILES = $(CONTRIB_BUILDDIR)/uuid/uuid_types.h
+
+$(top_builddir)/libglusterfs/src/libglusterfs.la:
+	$(MAKE) -C $(top_builddir)/libglusterfs/src/ all