[3966] Added missing logging trces to MySQL and Memfile.

src/lib/dhcpsrv/dhcpsrv_messages.mes

@@ -266,6 +266,16 @@ A debug message issued when the server is attempting to obtain an IPv4
 lease from the memory file database for a client with the specified
 client ID, hardware address and subnet ID.
 
+% DHCPSRV_MEMFILE_GET_EXPIRED4 obtaining expired IPv4 leases with limit %1
+A debug message issued when the server is attempting to obtain expired
+IPv4 leases to reclaim them. The maximum number of leases to be retrieved
+is logged in the message.
+
+% DHCPSRV_MEMFILE_GET_EXPIRED6 obtaining expired IPv6 leases with limit %1
+A debug message issued when the server is attempting to obtain expired
+IPv6 leases to reclaim them. The maximum number of leases to be retrieved
+is logged in the message.
+
 % DHCPSRV_MEMFILE_GET_HWADDR obtaining IPv4 leases for hardware address %1
 A debug message issued when the server is attempting to obtain a set of
 IPv4 leases from the memory file database for a client with the specified
@@ -391,6 +401,23 @@ connection including database name and username needed to access it
 A debug message issued when the server is attempting to delete a lease for
 the specified address from the MySQL database for the specified address.
 
+% DHCPSRV_MYSQL_DELETE_EXPIRED_RECLAIMED4 deleting reclaimed leases expired more than %1 s ago
+A debug message issued when the server is removing reclaimed DHCPv4
+leases which have expired longer than a specified period of time.
+The argument specified the number of seconds since leases' expiration
+before they can be removed.
+
+% DHCPSRV_MYSQL_DELETE_EXPIRED_RECLAIMED6 deleting reclaimed leases expired more than %1 s ago
+A debug message issued when the server is removing reclaimed DHCPv6
+leases which have expired longer than a specified period of time.
+The argument specified the number of seconds since leases' expiration
+before they can be removed.
+
+% DHCPSRV_MYSQL_DELETED_EXPIRED_RECLAIMED deleted %1 reclaimed leases from the database
+A debug message issued when the server has removed a number of reclaimed
+leases from the database. The number of removed leases is included in the
+message.
+
 % DHCPSRV_MYSQL_GET_ADDR4 obtaining IPv4 lease for address %1
 A debug message issued when the server is attempting to obtain an IPv4
 lease from the MySQL database for the specified address.
@@ -404,6 +431,16 @@ A debug message issued when the server is attempting to obtain a set
 of IPv4 leases from the MySQL database for a client with the specified
 client identification.
 
+% DHCPSRV_MYSQL_GET_EXPIRED4 obtaining expired IPv4 leases with limit %1
+A debug message issued when the server is attempting to obtain expired
+IPv4 leases to reclaim them. The maximum number of leases to be retrieved
+is logged in the message.
+
+% DHCPSRV_MYSQL_GET_EXPIRED6 obtaining expired IPv6 leases with limit %1
+A debug message issued when the server is attempting to obtain expired
+IPv6 leases to reclaim them. The maximum number of leases to be retrieved
+is logged in the message.
+
 % DHCPSRV_MYSQL_GET_HWADDR obtaining IPv4 leases for hardware address %1
 A debug message issued when the server is attempting to obtain a set
 of IPv4 leases from the MySQL database for a client with the specified

src/lib/dhcpsrv/memfile_lease_mgr.cc

@@ -506,6 +506,9 @@ Memfile_LeaseMgr::getLeases6(Lease::Type type,
 void
 Memfile_LeaseMgr::getExpiredLeases6(Lease6Collection& expired_leases,
                                     const size_t max_leases) const {
+    LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE_DETAIL, DHCPSRV_MEMFILE_GET_EXPIRED4)
+        .arg(max_leases);
+
     // Obtain the index which segragates leases by state and time.
     const Lease6StorageExpirationIndex& index = storage6_.get<ExpirationIndexTag>();
 
@@ -528,6 +531,9 @@ Memfile_LeaseMgr::getExpiredLeases6(Lease6Collection& expired_leases,
 void
 Memfile_LeaseMgr::getExpiredLeases4(Lease4Collection& expired_leases,
                                     const size_t max_leases) const {
+    LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE_DETAIL, DHCPSRV_MEMFILE_GET_EXPIRED6)
+        .arg(max_leases);
+
     // Obtain the index which segragates leases by state and time.
     const Lease4StorageExpirationIndex& index = storage4_.get<ExpirationIndexTag>();
 

src/lib/dhcpsrv/mysql_lease_mgr.cc

@@ -2014,12 +2014,16 @@ MySqlLeaseMgr::getLeases6(Lease::Type lease_type,
 void
 MySqlLeaseMgr::getExpiredLeases6(Lease6Collection& expired_leases,
                                  const size_t max_leases) const {
+    LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE_DETAIL, DHCPSRV_MYSQL_GET_EXPIRED6)
+        .arg(max_leases);
     getExpiredLeasesCommon(expired_leases, max_leases, GET_LEASE6_EXPIRE);
 }
 
 void
 MySqlLeaseMgr::getExpiredLeases4(Lease4Collection& expired_leases,
                                  const size_t max_leases) const {
+    LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE_DETAIL, DHCPSRV_MYSQL_GET_EXPIRED4)
+        .arg(max_leases);
     getExpiredLeasesCommon(expired_leases, max_leases, GET_LEASE4_EXPIRE);
 }
 
@@ -2203,11 +2207,17 @@ MySqlLeaseMgr::deleteLease(const isc::asiolink::IOAddress& addr) {
 
 uint64_t
 MySqlLeaseMgr::deleteExpiredReclaimedLeases4(const uint32_t secs) {
+    LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE_DETAIL,
+              DHCPSRV_MYSQL_DELETE_EXPIRED_RECLAIMED4)
+        .arg(secs);
     return (deleteExpiredReclaimedLeasesCommon(secs, DELETE_LEASE4_STATE_EXPIRED));
 }
 
 uint64_t
 MySqlLeaseMgr::deleteExpiredReclaimedLeases6(const uint32_t secs) {
+    LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE_DETAIL,
+              DHCPSRV_MYSQL_DELETE_EXPIRED_RECLAIMED6)
+        .arg(secs);
     return (deleteExpiredReclaimedLeasesCommon(secs, DELETE_LEASE6_STATE_EXPIRED));
 }
 
@@ -2218,6 +2228,7 @@ MySqlLeaseMgr::deleteExpiredReclaimedLeasesCommon(const uint32_t secs,
     MYSQL_BIND inbind[2];
     memset(inbind, 0, sizeof(inbind));
 
+    // State is reclaimed.
     uint32_t state = static_cast<uint32_t>(Lease::STATE_EXPIRED_RECLAIMED);
     inbind[0].buffer_type = MYSQL_TYPE_LONG;
     inbind[0].buffer = reinterpret_cast<char*>(&state);
@@ -2230,7 +2241,13 @@ MySqlLeaseMgr::deleteExpiredReclaimedLeasesCommon(const uint32_t secs,
     inbind[1].buffer = reinterpret_cast<char*>(&expire_time);
     inbind[1].buffer_length = sizeof(expire_time);
 
-    return (deleteLeaseCommon(statement_index, inbind));
+    // Get the number of deleted leases and log it.
+    uint64_t deleted_leases = deleteLeaseCommon(statement_index, inbind);
+    LOG_DEBUG(dhcpsrv_logger, DHCPSRV_DBG_TRACE_DETAIL,
+              DHCPSRV_MYSQL_DELETED_EXPIRED_RECLAIMED)
+        .arg(deleted_leases);
+
+    return (deleted_leases);
 }