GitLab

    Merge branch 'trac4277'

src/lib/dhcpsrv/pgsql_host_data_source.h
    - added comment about v6 Duplicate constraint when added host reservations

For the DHCPINFORM case set destination port 68 if:
- direct message sent without ciaddr,
- ciaddr present

Also updated unit test to verify port number for the directly
sent DHCPINFORM without ciaddr.

Wrapped declaration of tagged_statements[] in pgsql_host_data_source.cc
and mysql_host_data_source.cc in anonymous namespace.  They collide
otherwise.

src/lib/dhcprsrv/images/pgsql_host_data_source.svg
    - New class diagram for PgSqlHostDataSource

doc/Doxyfile
    - Added src/lib/dhcprsrv/images to IMAGE_PATH

src/lib/dhcpsrv/Makefile.am
    - Added images/pgsql_host_data_source.svg to EXTRA_DIST

src/lib/dhcpsrv/libdhcpsrv.dox
    - Added subsection postgreSQLHostMgr

src/lib/dhcpsrv/pgsql_connection.h
src/lib/dhcpsrv/pgsql_exchange.h
    - Minor cleanup

src/lib/dhcpsrv/tests/pgsql_exchange_unittest.cc
    - Added PgSqlBasicsTest test fixture class and tests which exercise all of
    the PostgreSQL data types we currently use with round-trip database writes
    and reads

src/lib/dhcpsrv/pgsql_connection.cc
src/lib/dhcpsrv/pgsql_connection.h
    - Moved PgSqlResult function impls from .h
    - Added exception safe implementation of getColumnLabel() to PgSqlResult

src/lib/dhcpsrv/pgsql_exchange.cc
src/lib/dhcpsrv/pgsql_exchange.h
    - PsqlBindArray::add() variants which accept raw pointers now throw
    if the pointer is NULL
    - PgSqlExchange::getColumnLabel() is now a wrapper around PgSqlResult method

src/lib/dhcpsrv/pgsql_host_data_source.h
src/lib/dhcpsrv/pgsql_host_data_source.cc
     - Commentary clean up

src/lib/dhcpsrv/pgsql_lease_mgr.cc
     - Commentary clean up

buffer6_send and lease6_release (PD case) hook points didn't set
copying retrieved options flag for a packet passed to callouts.