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[5208a] delete methods implemented in host data sources

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This commit is contained in:
Tomek Mrugalski
2017-04-22 21:56:33 +02:00
parent 7d00bc89e7
commit 8b561ef854
13 changed files with 675 additions and 19 deletions
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153
src/lib/dhcpsrv/mysql_host_data_source.cc
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@@ -1763,6 +1763,9 @@ public:
INSERT_V6_RESRV, // Insert v6 reservation
INSERT_V4_OPTION, // Insert DHCPv4 option
INSERT_V6_OPTION, // Insert DHCPv6 option
DEL_HOST_ADDR4, // Delete v4 host (subnet-id, addr4)
DEL_HOST_SUBID4_ID, // Delete v4 host (subnet-id, ident.type, identifier)
DEL_HOST_SUBID6_ID, // Delete v6 host (subnet-id, ident.type, identifier)
NUM_STATEMENTS // Number of statements
};
@@ -1792,6 +1795,15 @@ public:
void addStatement(MySqlHostDataSourceImpl::StatementIndex stindex,
std::vector<MYSQL_BIND>& bind);
/// @brief Executes statements that delete records.
///
/// @param stindex Index of a statement being executed.
/// @param bind Vector of MYSQL_BIND objects to be used when making the
/// query.
/// @return true if any records were deleted, false otherwise
bool
delStatement(StatementIndex stindex, MYSQL_BIND* bind);
/// @brief Inserts IPv6 Reservation into ipv6_reservation table.
///
/// @param resv IPv6 Reservation to be added
@@ -2101,7 +2113,20 @@ TaggedStatementArray tagged_statements = { {
{MySqlHostDataSourceImpl::INSERT_V6_OPTION,
"INSERT INTO dhcp6_options(option_id, code, value, formatted_value, space, "
"persistent, dhcp_client_class, dhcp6_subnet_id, host_id, scope_id) "
" VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, 3)"}}
" VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, 3)"},
{MySqlHostDataSourceImpl::DEL_HOST_ADDR4,
"DELETE FROM hosts WHERE dhcp4_subnet_id = ? AND ipv4_address = ?"},
{MySqlHostDataSourceImpl::DEL_HOST_SUBID4_ID,
"DELETE FROM hosts WHERE dhcp4_subnet_id = ? AND dhcp_identifier_type=? "
"AND dhcp_identifier = ?"},
{MySqlHostDataSourceImpl::DEL_HOST_SUBID6_ID,
"DELETE FROM hosts WHERE dhcp6_subnet_id = ? AND dhcp_identifier_type=? "
"AND dhcp_identifier = ?"}
}
};
MySqlHostDataSourceImpl::
@@ -2186,6 +2211,25 @@ MySqlHostDataSourceImpl::addStatement(StatementIndex stindex,
}
}
bool
MySqlHostDataSourceImpl::delStatement(StatementIndex stindex,
MYSQL_BIND* bind) {
// Bind the parameters to the statement
int status = mysql_stmt_bind_param(conn_.statements_[stindex], &bind[0]);
checkError(status, stindex, "unable to bind parameters");
// Execute the statement
status = mysql_stmt_execute(conn_.statements_[stindex]);
if (status != 0) {
checkError(status, stindex, "unable to execute");
}
// Let's check how many hosts were deleted.
my_ulonglong numrows = mysql_stmt_affected_rows(conn_.statements_[stindex]);
return (numrows != 0);
}
void
MySqlHostDataSourceImpl::addResv(const IPv6Resrv& resv,
const HostID& id) {
@@ -2412,6 +2456,113 @@ MySqlHostDataSource::add(const HostPtr& host) {
transaction.commit();
}
bool
MySqlHostDataSource::del(const SubnetID& subnet_id, const asiolink::IOAddress& addr) {
// If operating in read-only mode, throw exception.
impl_->checkReadOnly();
if (addr.isV4()) {
// Set up the WHERE clause value
MYSQL_BIND inbind[2];
uint32_t subnet = subnet_id;
memset(inbind, 0, sizeof(inbind));
inbind[0].buffer_type = MYSQL_TYPE_LONG;
inbind[0].buffer = reinterpret_cast<char*>(&subnet);
inbind[0].is_unsigned = MLM_TRUE;
uint32_t addr4 = addr.toUint32();
inbind[1].buffer_type = MYSQL_TYPE_LONG;
inbind[1].buffer = reinterpret_cast<char*>(&addr4);
inbind[1].is_unsigned = MLM_TRUE;
ConstHostCollection collection;
return (impl_->delStatement(MySqlHostDataSourceImpl::DEL_HOST_ADDR4, inbind));
}
// v6
ConstHostPtr host = get6(subnet_id, addr);
if (!host) {
return (false);
}
// Ok, there is a host. Let's delete it.
return del6(subnet_id, host->getIdentifierType(), &host->getIdentifier()[0],
host->getIdentifier().size());
}
bool
MySqlHostDataSource::del4(const SubnetID& subnet_id,
const Host::IdentifierType& identifier_type,
const uint8_t* identifier_begin, const size_t identifier_len) {
// If operating in read-only mode, throw exception.
impl_->checkReadOnly();
// Set up the WHERE clause value
MYSQL_BIND inbind[3];
// subnet-id
memset(inbind, 0, sizeof(inbind));
uint32_t subnet = static_cast<uint32_t>(subnet_id);
inbind[0].buffer_type = MYSQL_TYPE_LONG;
inbind[0].buffer = reinterpret_cast<char*>(&subnet);
inbind[0].is_unsigned = MLM_TRUE;
// identifier type
char identifier_type_copy = static_cast<char>(identifier_type);
inbind[1].buffer_type = MYSQL_TYPE_TINY;
inbind[1].buffer = reinterpret_cast<char*>(&identifier_type_copy);
inbind[1].is_unsigned = MLM_TRUE;
// identifier value
std::vector<char> identifier_vec(identifier_begin,
identifier_begin + identifier_len);
unsigned long length = identifier_vec.size();
inbind[2].buffer_type = MYSQL_TYPE_BLOB;
inbind[2].buffer = &identifier_vec[0];
inbind[2].buffer_length = length;
inbind[2].length = &length;
ConstHostCollection collection;
return (impl_->delStatement(MySqlHostDataSourceImpl::DEL_HOST_SUBID4_ID, inbind));
}
bool
MySqlHostDataSource::del6(const SubnetID& subnet_id,
const Host::IdentifierType& identifier_type,
const uint8_t* identifier_begin, const size_t identifier_len) {
// If operating in read-only mode, throw exception.
impl_->checkReadOnly();
// Set up the WHERE clause value
MYSQL_BIND inbind[3];
// subnet-id
memset(inbind, 0, sizeof(inbind));
uint32_t subnet = static_cast<uint32_t>(subnet_id);
inbind[0].buffer_type = MYSQL_TYPE_LONG;
inbind[0].buffer = reinterpret_cast<char*>(&subnet);
inbind[0].is_unsigned = MLM_TRUE;
// identifier type
char identifier_type_copy = static_cast<char>(identifier_type);
inbind[1].buffer_type = MYSQL_TYPE_TINY;
inbind[1].buffer = reinterpret_cast<char*>(&identifier_type_copy);
inbind[1].is_unsigned = MLM_TRUE;
// identifier value
std::vector<char> identifier_vec(identifier_begin,
identifier_begin + identifier_len);
unsigned long length = identifier_vec.size();
inbind[2].buffer_type = MYSQL_TYPE_BLOB;
inbind[2].buffer = &identifier_vec[0];
inbind[2].buffer_length = length;
inbind[2].length = &length;
ConstHostCollection collection;
return (impl_->delStatement(MySqlHostDataSourceImpl::DEL_HOST_SUBID6_ID, inbind));
}
ConstHostCollection
MySqlHostDataSource::getAll(const HWAddrPtr& hwaddr,
const DuidPtr& duid) const {