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Commit 30a20ce2 authored by Marcin Siodelski's avatar Marcin Siodelski
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[3281] DHCPv4 configuration parser sets the subnet id specified by user.

parent 17282104
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Showing with 137 additions and 15 deletions
src/bin/dhcp4/config_parser.cc
View file @ 30a20ce2
......@@ -201,7 +201,8 @@ protected:
DhcpConfigParser* parser = NULL;
if ((config_id.compare("valid-lifetime") == 0) ||
(config_id.compare("renew-timer") == 0) ||
(config_id.compare("rebind-timer") == 0)) {
(config_id.compare("rebind-timer") == 0) ||
(config_id.compare("id") == 0)) {
parser = new Uint32Parser(config_id, uint32_values_);
} else if ((config_id.compare("subnet") == 0) ||
(config_id.compare("interface") == 0) ||
......@@ -271,6 +272,10 @@ protected:
Triplet<uint32_t> t1 = getParam("renew-timer");
Triplet<uint32_t> t2 = getParam("rebind-timer");
Triplet<uint32_t> valid = getParam("valid-lifetime");
// Subnet ID is optional. If it is not supplied the value of 0 is used,
// which means autogenerate.
SubnetID subnet_id =
static_cast<SubnetID>(uint32_values_->getOptionalParam("id", 0));
stringstream tmp;
tmp << addr << "/" << (int)len
......@@ -278,7 +283,7 @@ protected:
LOG_INFO(dhcp4_logger, DHCP4_CONFIG_NEW_SUBNET).arg(tmp.str());
Subnet4Ptr subnet4(new Subnet4(addr, len, t1, t2, valid));
Subnet4Ptr subnet4(new Subnet4(addr, len, t1, t2, valid, subnet_id));
subnet_ = subnet4;
// Try global value first
......
src/bin/dhcp4/dhcp4.spec
View file @ 30a20ce2
......@@ -213,6 +213,12 @@
"item_default": ""
},
{ "item_name": "id",
"item_type": "integer",
"item_optional": false,
"item_default": 0
},
{ "item_name": "renew-timer",
"item_type": "integer",
"item_optional": false,
......
src/bin/dhcp4/tests/config_parser_unittest.cc
View file @ 30a20ce2
......@@ -550,6 +550,8 @@ TEST_F(Dhcp4ParserTest, subnetGlobalDefaults) {
// multiple times.
TEST_F(Dhcp4ParserTest, multipleSubnets) {
ConstElementPtr x;
// Collection of four subnets for which subnet ids should be
// autogenerated - ids are unspecified or set to 0.
string config = "{ \"interfaces\": [ \"*\" ],"
"\"rebind-timer\": 2000, "
"\"renew-timer\": 1000, "
......@@ -559,7 +561,8 @@ TEST_F(Dhcp4ParserTest, multipleSubnets) {
" },"
" {"
" \"pool\": [ \"192.0.3.101 - 192.0.3.150\" ],"
" \"subnet\": \"192.0.3.0/24\" "
" \"subnet\": \"192.0.3.0/24\", "
" \"id\": 0 "
" },"
" {"
" \"pool\": [ \"192.0.4.101 - 192.0.4.150\" ],"
......@@ -605,6 +608,106 @@ TEST_F(Dhcp4ParserTest, multipleSubnets) {
} while (++cnt < 10);
}
// This test checks that it is possible to assign arbitrary ids for subnets.
TEST_F(Dhcp4ParserTest, multipleSubnetsExplicitIDs) {
ConstElementPtr x;
// Collection of four subnets for which subnet ids should be
// autogenerated - ids are unspecified or set to 0.
string config = "{ \"interfaces\": [ \"*\" ],"
"\"rebind-timer\": 2000, "
"\"renew-timer\": 1000, "
"\"subnet4\": [ { "
" \"pool\": [ \"192.0.2.1 - 192.0.2.100\" ],"
" \"subnet\": \"192.0.2.0/24\", "
" \"id\": 1024 "
" },"
" {"
" \"pool\": [ \"192.0.3.101 - 192.0.3.150\" ],"
" \"subnet\": \"192.0.3.0/24\", "
" \"id\": 100 "
" },"
" {"
" \"pool\": [ \"192.0.4.101 - 192.0.4.150\" ],"
" \"subnet\": \"192.0.4.0/24\", "
" \"id\": 1 "
" },"
" {"
" \"pool\": [ \"192.0.5.101 - 192.0.5.150\" ],"
" \"subnet\": \"192.0.5.0/24\", "
" \"id\": 34 "
" } ],"
"\"valid-lifetime\": 4000 }";
ElementPtr json = Element::fromJSON(config);
EXPECT_NO_THROW(x = configureDhcp4Server(*srv_, json));
ASSERT_TRUE(x);
comment_ = parseAnswer(rcode_, x);
ASSERT_EQ(0, rcode_);
int cnt = 0; // Number of reconfigurations
do {
ElementPtr json = Element::fromJSON(config);
EXPECT_NO_THROW(x = configureDhcp4Server(*srv_, json));
ASSERT_TRUE(x);
comment_ = parseAnswer(rcode_, x);
ASSERT_EQ(0, rcode_);
const Subnet4Collection* subnets = CfgMgr::instance().getSubnets4();
ASSERT_TRUE(subnets);
ASSERT_EQ(4, subnets->size()); // We expect 4 subnets
// Verify that subnet ids are as expected.
EXPECT_EQ(1024, subnets->at(0)->getID());
EXPECT_EQ(100, subnets->at(1)->getID());
EXPECT_EQ(1, subnets->at(2)->getID());
EXPECT_EQ(34, subnets->at(3)->getID());
// Repeat reconfiguration process 10 times and check that the subnet-id
// is set to the same value.
} while (++cnt < 10);
}
// Check that the configuration with two subnets having the same id is rejected.
TEST_F(Dhcp4ParserTest, multipleSubnetsOverlapingIDs) {
ConstElementPtr x;
// Collection of four subnets for which subnet ids should be
// autogenerated - ids are unspecified or set to 0.
string config = "{ \"interfaces\": [ \"*\" ],"
"\"rebind-timer\": 2000, "
"\"renew-timer\": 1000, "
"\"subnet4\": [ { "
" \"pool\": [ \"192.0.2.1 - 192.0.2.100\" ],"
" \"subnet\": \"192.0.2.0/24\", "
" \"id\": 1024 "
" },"
" {"
" \"pool\": [ \"192.0.3.101 - 192.0.3.150\" ],"
" \"subnet\": \"192.0.3.0/24\", "
" \"id\": 100 "
" },"
" {"
" \"pool\": [ \"192.0.4.101 - 192.0.4.150\" ],"
" \"subnet\": \"192.0.4.0/24\", "
" \"id\": 1024 "
" },"
" {"
" \"pool\": [ \"192.0.5.101 - 192.0.5.150\" ],"
" \"subnet\": \"192.0.5.0/24\", "
" \"id\": 34 "
" } ],"
"\"valid-lifetime\": 4000 }";
ElementPtr json = Element::fromJSON(config);
EXPECT_NO_THROW(x = configureDhcp4Server(*srv_, json));
ASSERT_TRUE(x);
comment_ = parseAnswer(rcode_, x);
EXPECT_NE(rcode_, 0);
}
// Goal of this test is to verify that a previously configured subnet can be
// deleted in subsequent reconfiguration.
TEST_F(Dhcp4ParserTest, reconfigureRemoveSubnet) {
......@@ -616,19 +719,23 @@ TEST_F(Dhcp4ParserTest, reconfigureRemoveSubnet) {
"\"renew-timer\": 1000, "
"\"subnet4\": [ { "
" \"pool\": [ \"192.0.2.1 - 192.0.2.100\" ],"
" \"subnet\": \"192.0.2.0/24\" "
" \"subnet\": \"192.0.2.0/24\", "
" \"id\": 1 "
" },"
" {"
" \"pool\": [ \"192.0.3.101 - 192.0.3.150\" ],"
" \"subnet\": \"192.0.3.0/24\" "
" \"subnet\": \"192.0.3.0/24\", "
" \"id\": 2 "
" },"
" {"
" \"pool\": [ \"192.0.4.101 - 192.0.4.150\" ],"
" \"subnet\": \"192.0.4.0/24\" "
" \"subnet\": \"192.0.4.0/24\", "
" \"id\": 3 "
" },"
" {"
" \"pool\": [ \"192.0.5.101 - 192.0.5.150\" ],"
" \"subnet\": \"192.0.5.0/24\" "
" \"subnet\": \"192.0.5.0/24\", "
" \"id\": 4 "
" } ],"
"\"valid-lifetime\": 4000 }";
......@@ -638,15 +745,18 @@ TEST_F(Dhcp4ParserTest, reconfigureRemoveSubnet) {
"\"renew-timer\": 1000, "
"\"subnet4\": [ { "
" \"pool\": [ \"192.0.2.1 - 192.0.2.100\" ],"
" \"subnet\": \"192.0.2.0/24\" "
" \"subnet\": \"192.0.2.0/24\", "
" \"id\": 1 "
" },"
" {"
" \"pool\": [ \"192.0.3.101 - 192.0.3.150\" ],"
" \"subnet\": \"192.0.3.0/24\" "
" \"subnet\": \"192.0.3.0/24\", "
" \"id\": 2 "
" },"
" {"
" \"pool\": [ \"192.0.4.101 - 192.0.4.150\" ],"
" \"subnet\": \"192.0.4.0/24\" "
" \"subnet\": \"192.0.4.0/24\", "
" \"id\": 3 "
" } ],"
"\"valid-lifetime\": 4000 }";
......@@ -656,15 +766,18 @@ TEST_F(Dhcp4ParserTest, reconfigureRemoveSubnet) {
"\"renew-timer\": 1000, "
"\"subnet4\": [ { "
" \"pool\": [ \"192.0.2.1 - 192.0.2.100\" ],"
" \"subnet\": \"192.0.2.0/24\" "
" \"subnet\": \"192.0.2.0/24\", "
" \"id\": 1 "
" },"
" {"
" \"pool\": [ \"192.0.4.101 - 192.0.4.150\" ],"
" \"subnet\": \"192.0.4.0/24\" "
" \"subnet\": \"192.0.4.0/24\", "
" \"id\": 3 "
" },"
" {"
" \"pool\": [ \"192.0.5.101 - 192.0.5.150\" ],"
" \"subnet\": \"192.0.5.0/24\" "
" \"subnet\": \"192.0.5.0/24\", "
" \"id\": 4 "
" } ],"
"\"valid-lifetime\": 4000 }";
......@@ -700,7 +813,6 @@ TEST_F(Dhcp4ParserTest, reconfigureRemoveSubnet) {
/// CASE 2: Configure 4 subnets, then reconfigure and remove one
/// from in between (not first, not last)
#if 0
/// @todo: Uncomment subnet removal test as part of #3281.
json = Element::fromJSON(config4);
EXPECT_NO_THROW(x = configureDhcp4Server(*srv_, json));
......@@ -723,7 +835,6 @@ TEST_F(Dhcp4ParserTest, reconfigureRemoveSubnet) {
// The second subnet (with subnet-id = 2) is no longer there
EXPECT_EQ(3, subnets->at(1)->getID());
EXPECT_EQ(4, subnets->at(2)->getID());
#endif
}
......
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