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bgp_config_ifmap.cc
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bgp_config_ifmap.cc
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#include "bgp/bgp_config_ifmap.h"
#include <boost/foreach.hpp>
#include "base/string_util.h"
#include "base/task_annotations.h"
#include "bgp/bgp_config_listener.h"
#include "bgp/bgp_log.h"
#include "ifmap/ifmap_node.h"
#include "ifmap/ifmap_table.h"
#include "schema/bgp_schema_types.h"
#include "schema/vnc_cfg_types.h"
using namespace std;
using boost::iequals;
const int BgpIfmapConfigManager::kConfigTaskInstanceId = 0;
int BgpIfmapConfigManager::config_task_id_ = -1;
static BgpNeighborConfig::AddressFamilyList default_addr_family_list;
void DefaultAddressFamilyInit() {
default_addr_family_list.push_back("inet");
default_addr_family_list.push_back("inet-vpn");
}
MODULE_INITIALIZER(DefaultAddressFamilyInit);
static string IdentifierParent(const string &identifier) {
string parent;
size_t last;
last = identifier.rfind(':');
if (last == 0 || last == string::npos) {
return parent;
}
parent = identifier.substr(0, last);
return parent;
}
static uint32_t IpAddressToBgpIdentifier(const IpAddress &address) {
return htonl(address.to_v4().to_ulong());
}
static std::string BgpIdentifierToString(uint32_t identifier) {
Ip4Address addr(ntohl(identifier));
return addr.to_string();
}
BgpIfmapPeeringConfig::BgpIfmapPeeringConfig(BgpIfmapInstanceConfig *instance)
: instance_(instance) {
}
BgpIfmapPeeringConfig::~BgpIfmapPeeringConfig() {
STLDeleteElements(&neighbors_);
}
void BgpIfmapPeeringConfig::SetNodeProxy(IFMapNodeProxy *proxy) {
if (proxy != NULL) {
node_proxy_.Swap(proxy);
name_ = node_proxy_.node()->name();
}
}
BgpIfmapRoutingPolicyLinkConfig::BgpIfmapRoutingPolicyLinkConfig(
BgpIfmapInstanceConfig *rti, BgpIfmapRoutingPolicyConfig *rtp) :
instance_(rti), policy_(rtp) {
}
BgpIfmapRoutingPolicyLinkConfig::~BgpIfmapRoutingPolicyLinkConfig() {
}
void BgpIfmapRoutingPolicyLinkConfig::SetNodeProxy(IFMapNodeProxy *proxy) {
if (proxy != NULL) {
node_proxy_.Swap(proxy);
name_ = node_proxy_.node()->name();
}
}
bool BgpIfmapRoutingPolicyLinkConfig::GetRoutingInstanceRoutingPolicyPair(
DBGraph *graph, IFMapNode *node, pair<IFMapNode *, IFMapNode *> *pair) {
IFMapNode *routing_instance = NULL;
IFMapNode *routing_policy = NULL;
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
if (strcmp(adj->table()->Typename(), "routing-instance") == 0)
routing_instance = adj;
if (strcmp(adj->table()->Typename(), "routing-policy") == 0)
routing_policy = adj;
}
if (routing_policy == NULL || routing_instance == NULL) {
return false;
}
pair->first = routing_instance;
pair->second = routing_policy;
return true;
}
void BgpIfmapRoutingPolicyLinkConfig::Update(BgpIfmapConfigManager *manager,
const autogen::RoutingInstanceRoutingPolicy *ri_rp) {
ri_rp_link_.reset(ri_rp);
}
void BgpIfmapRoutingPolicyLinkConfig::Delete(BgpIfmapConfigManager *manager) {
ri_rp_link_.reset();
}
static AuthenticationData::KeyType KeyChainType(const std::string &value) {
// Case-insensitive comparison
if (boost::iequals(value, "md5")) {
return AuthenticationData::MD5;
}
return AuthenticationData::NIL;
}
static void BuildKeyChain(BgpNeighborConfig *neighbor,
const autogen::AuthenticationData &values) {
AuthenticationData keydata;
keydata.set_key_type(KeyChainType(values.key_type));
AuthenticationKey key;
for (std::vector<autogen::AuthenticationKeyItem>::const_iterator iter =
values.key_items.begin(); iter != values.key_items.end(); ++iter) {
key.id = iter->key_id;
key.value = iter->key;
key.start_time = 0;
keydata.AddKeyToKeyChain(key);
}
neighbor->set_keydata(keydata);
}
//
// Check if the family is allowed to be configured for BgpNeighborConfig.
// Only families inet and inet6 are allowed on non-master instances.
//
static bool AddressFamilyIsValid(BgpNeighborConfig *neighbor,
const string &family) {
if (neighbor->instance_name() == BgpConfigManager::kMasterInstance)
return true;
return (family == "inet" || family == "inet6");
}
//
// Build list of BgpFamilyAttributesConfig elements from the list of address
// families. This is provided for backward compatibility with configurations
// that represent each family with a simple string.
//
static void BuildFamilyAttributesList(BgpNeighborConfig *neighbor,
const BgpNeighborConfig::AddressFamilyList &family_list) {
BgpNeighborConfig::FamilyAttributesList family_attributes_list;
BOOST_FOREACH(const string &family, family_list) {
if (!AddressFamilyIsValid(neighbor, family))
continue;
BgpFamilyAttributesConfig family_attributes(family);
family_attributes_list.push_back(family_attributes);
}
neighbor->set_family_attributes_list(family_attributes_list);
}
//
// Build list of BgpFamilyAttributesConfig elements from BgpFamilyAttributes
// list in BgpSessionAttributes.
//
// Implement backward compatibility by also adding BgpFamilyAttributesConfig
// elements for families that are not in BgpFamilyAttributes list but are in
// the address_families list.
//
static void BuildFamilyAttributesList(BgpNeighborConfig *neighbor,
const autogen::BgpSessionAttributes *attributes) {
set<string> family_set;
BgpNeighborConfig::FamilyAttributesList family_attributes_list;
BOOST_FOREACH(const autogen::BgpFamilyAttributes &family_config,
attributes->family_attributes) {
if (!AddressFamilyIsValid(neighbor, family_config.address_family))
continue;
BgpFamilyAttributesConfig family_attributes(
family_config.address_family);
family_attributes.loop_count = family_config.loop_count;
family_attributes.prefix_limit = family_config.prefix_limit.maximum;
family_attributes_list.push_back(family_attributes);
family_set.insert(family_config.address_family);
}
BOOST_FOREACH(const string &family, attributes->address_families.family) {
if (family_set.find(family) != family_set.end())
continue;
BgpFamilyAttributesConfig family_attributes(family);
family_attributes_list.push_back(family_attributes);
}
neighbor->set_family_attributes_list(family_attributes_list);
}
//
// Set the autogen::BgpSessionAttributes for this BgpNeighborConfig.
//
// The autogen::BgpSession will have up to 3 session attributes - one that
// applies to the local router, one that applies the remote router and one
// that applies to both.
//
static void NeighborSetSessionAttributes(
BgpNeighborConfig *neighbor, const string &localname,
const autogen::BgpSession *session) {
typedef vector<autogen::BgpSessionAttributes> AttributeVec;
const autogen::BgpSessionAttributes *common = NULL;
const autogen::BgpSessionAttributes *local = NULL;
for (AttributeVec::const_iterator iter = session->attributes.begin();
iter != session->attributes.end(); ++iter) {
const autogen::BgpSessionAttributes *attr = iter.operator->();
if (attr->bgp_router.empty()) {
common = attr;
} else if (neighbor->router_type() != "bgpaas-client" &&
attr->bgp_router == localname) {
local = attr;
} else if (neighbor->router_type() == "bgpaas-client" &&
attr->bgp_router == "bgpaas-server") {
local = attr;
}
}
// TODO: local should override rather than replace common.
const autogen::BgpSessionAttributes *attributes = NULL;
if (common != NULL) {
attributes = common;
} else if (local != NULL) {
attributes = local;
}
if (attributes != NULL) {
neighbor->set_passive(attributes->passive);
neighbor->set_loop_count(attributes->loop_count);
if (attributes->admin_down) {
neighbor->set_admin_down(true);
}
if (attributes->hold_time) {
neighbor->set_hold_time(attributes->hold_time);
}
BuildFamilyAttributesList(neighbor, attributes);
BuildKeyChain(neighbor, attributes->auth_data);
}
}
static BgpNeighborConfig *MakeBgpNeighborConfig(
const BgpIfmapInstanceConfig *instance,
const BgpIfmapInstanceConfig *master_instance,
const string &local_name,
const string &remote_name,
const autogen::BgpRouter *local_router,
const autogen::BgpRouter *remote_router,
const autogen::BgpSession *session) {
BgpNeighborConfig *neighbor = new BgpNeighborConfig();
neighbor->set_instance_name(instance->name());
// If the autogen::BgpSession has a uuid, we append it to the remote
// bgp-router's name to make the BgpNeighborConfig's name unique.
if (session && !session->uuid.empty()) {
neighbor->set_uuid(session->uuid);
neighbor->set_name(remote_name + ":" + session->uuid);
} else {
neighbor->set_name(remote_name);
}
// Store a copy of the remote bgp-router's autogen::BgpRouterParams and
// derive the autogen::BgpSessionAttributes for the session.
const autogen::BgpRouterParams ¶ms = remote_router->parameters();
neighbor->set_router_type(params.router_type);
if (params.admin_down) {
neighbor->set_admin_down(true);
}
if (params.local_autonomous_system) {
neighbor->set_peer_as(params.local_autonomous_system);
} else {
neighbor->set_peer_as(params.autonomous_system);
}
boost::system::error_code err;
neighbor->set_peer_address(
IpAddress::from_string(params.address, err));
if (err) {
BGP_LOG_STR(BgpConfig, SandeshLevel::SYS_WARN, BGP_LOG_FLAG_ALL,
"Invalid peer address " << params.address <<
" for neighbor " << neighbor->name());
}
Ip4Address identifier = Ip4Address::from_string(params.identifier, err);
if (err) {
BGP_LOG_STR(BgpConfig, SandeshLevel::SYS_WARN, BGP_LOG_FLAG_ALL,
"Invalid peer identifier " << params.identifier <<
" for neighbor " << neighbor->name());
}
neighbor->set_peer_identifier(IpAddressToBgpIdentifier(identifier));
neighbor->set_port(params.port);
neighbor->set_source_port(params.source_port);
neighbor->set_hold_time(params.hold_time);
if (session != NULL) {
NeighborSetSessionAttributes(neighbor, local_name, session);
}
// Get the local identifier and local as from the master protocol config.
const BgpIfmapProtocolConfig *master_protocol =
master_instance->protocol_config();
if (master_protocol && master_protocol->bgp_router()) {
const autogen::BgpRouterParams ¶ms =
master_protocol->router_params();
if (params.admin_down) {
neighbor->set_admin_down(true);
}
Ip4Address localid = Ip4Address::from_string(params.identifier, err);
if (err == 0) {
neighbor->set_local_identifier(IpAddressToBgpIdentifier(localid));
}
if (params.local_autonomous_system) {
neighbor->set_local_as(params.local_autonomous_system);
} else {
neighbor->set_local_as(params.autonomous_system);
}
if (instance != master_instance) {
neighbor->set_passive(true);
}
}
// Get other parameters from the instance protocol config.
// Note that there's no instance protocol config for non-master instances.
const BgpIfmapProtocolConfig *protocol = instance->protocol_config();
if (protocol && protocol->bgp_router()) {
const autogen::BgpRouterParams ¶ms = protocol->router_params();
if (neighbor->family_attributes_list().empty()) {
BuildFamilyAttributesList(neighbor, params.address_families.family);
}
if (neighbor->auth_data().Empty()) {
const autogen::BgpRouterParams &lp = local_router->parameters();
BuildKeyChain(neighbor, lp.auth_data);
}
}
if (neighbor->family_attributes_list().empty()) {
BuildFamilyAttributesList(neighbor, default_addr_family_list);
}
return neighbor;
}
//
// Build map of BgpNeighborConfigs based on the data in autogen::BgpPeering.
//
void BgpIfmapPeeringConfig::BuildNeighbors(BgpIfmapConfigManager *manager,
const autogen::BgpRouter *local_rt_config,
const string &peername, const autogen::BgpRouter *remote_rt_config,
const autogen::BgpPeering *peering, NeighborMap *map) {
const BgpIfmapInstanceConfig *master_instance =
manager->config()->FindInstance(BgpConfigManager::kMasterInstance);
// If there are one or more autogen::BgpSessions for the peering, use
// those to create the BgpNeighborConfigs.
const autogen::BgpPeeringAttributes &attr = peering->data();
for (autogen::BgpPeeringAttributes::const_iterator iter = attr.begin();
iter != attr.end(); ++iter) {
BgpNeighborConfig *neighbor = MakeBgpNeighborConfig(
instance_, master_instance, manager->localname(), peername,
local_rt_config, remote_rt_config, iter.operator->());
map->insert(make_pair(neighbor->name(), neighbor));
}
// When no sessions are present, create a single BgpNeighborConfig with
// no per-session configuration.
if (map->empty()) {
BgpNeighborConfig *neighbor = MakeBgpNeighborConfig(
instance_, master_instance, manager->localname(), peername,
local_rt_config, remote_rt_config, NULL);
map->insert(make_pair(neighbor->name(), neighbor));
}
}
//
// Update BgpIfmapPeeringConfig based on updated autogen::BgpPeering.
//
// This mainly involves building future BgpNeighborConfigs and doing a diff of
// the current and future BgpNeighborConfigs. Note that BgpIfmapInstanceConfig
// also has references to BgpNeighborConfigs, so it also needs to be updated as
// part of the process.
//
void BgpIfmapPeeringConfig::Update(BgpIfmapConfigManager *manager,
const autogen::BgpPeering *peering) {
IFMapNode *node = node_proxy_.node();
assert(node != NULL);
bgp_peering_.reset(peering);
// Build the future NeighborMap. The future map should be empty if the
// bgp-peering is deleted or if the parameters for the remote bgp-router
// are not available.
NeighborMap future;
pair<IFMapNode *, IFMapNode *> routers;
if (!node->IsDeleted() &&
GetRouterPair(manager->graph(), manager->localname(), node, &routers)) {
const autogen::BgpRouter *local_rt_config =
static_cast<const autogen::BgpRouter *>(
routers.first->GetObject());
const autogen::BgpRouter *remote_rt_config =
static_cast<const autogen::BgpRouter *>(
routers.second->GetObject());
if (local_rt_config &&
local_rt_config->IsPropertySet(autogen::BgpRouter::PARAMETERS) &&
remote_rt_config &&
remote_rt_config->IsPropertySet(autogen::BgpRouter::PARAMETERS)) {
BuildNeighbors(manager, local_rt_config, routers.second->name(),
remote_rt_config, peering, &future);
}
}
// Swap out the NeighborMap in preparation for doing a diff.
NeighborMap current;
current.swap(neighbors_);
// Do a diff on the current and future BgpNeighborConfigs, making sure
// that the BgpIfmapInstanceConfig is updated accordingly. We add any new
// BgpNeighborConfigs to our NeighborMap.
NeighborMap::iterator it1 = current.begin();
NeighborMap::iterator it2 = future.begin();
while (it1 != current.end() && it2 != future.end()) {
if (it1->first < it2->first) {
BgpNeighborConfig *prev = it1->second;
instance_->DeleteNeighbor(manager, prev);
++it1;
} else if (it1->first > it2->first) {
BgpNeighborConfig *neighbor = it2->second;
instance_->AddNeighbor(manager, neighbor);
neighbors_.insert(*it2);
it2->second = NULL;
++it2;
} else {
BgpNeighborConfig *neighbor = it1->second;
BgpNeighborConfig *update = it2->second;
if (*neighbor != *update) {
instance_->ChangeNeighbor(manager, update);
neighbors_.insert(*it2);
it2->second = NULL;
} else {
neighbors_.insert(*it1);
it1->second = NULL;
}
++it1;
++it2;
}
}
for (; it1 != current.end(); ++it1) {
BgpNeighborConfig *prev = it1->second;
instance_->DeleteNeighbor(manager, prev);
}
for (; it2 != future.end(); ++it2) {
BgpNeighborConfig *neighbor = it2->second;
instance_->AddNeighbor(manager, neighbor);
neighbors_.insert(*it2);
it2->second = NULL;
}
// Get rid of the current and future NeighborMaps and destroy any mapped
// BgpNeighborConfigs. Note that we have carefully reset mapped values to
// NULL above when we don't want a BgpNeighborConfig to get destroyed.
STLDeleteElements(¤t);
STLDeleteElements(&future);
}
//
// Delete all state for the given BgpPeeringConfig.
//
// This mainly involves getting rid of BgpNeighborConfigs in the NeighborMap.
//
void BgpIfmapPeeringConfig::Delete(BgpIfmapConfigManager *manager) {
NeighborMap current;
current.swap(neighbors_);
for (NeighborMap::iterator iter = current.begin();
iter != current.end(); ++iter) {
instance_->DeleteNeighbor(manager, iter->second);
}
STLDeleteElements(¤t);
bgp_peering_.reset();
}
//
// Find the IFMapNodes for a bgp-peering.
//
// The "node" is the IFMapNode for the bgp-peering link. The bgp-peering is
// interesting only if one of the bgp-routers is the local node.
//
// Return true if both bgp-routers for the bgp-peering exist and one of them
// is the local one. Also fill in the local and remote IFMapNode pointers if
// we return true.
//
bool BgpIfmapPeeringConfig::GetRouterPair(DBGraph *db_graph,
const string &localname, IFMapNode *node,
pair<IFMapNode *, IFMapNode *> *pair) {
IFMapNode *local = NULL;
IFMapNode *remote = NULL;
for (DBGraphVertex::adjacency_iterator iter = node->begin(db_graph);
iter != node->end(db_graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
if (strcmp(adj->table()->Typename(), "bgp-router") != 0)
continue;
autogen::BgpRouter *router =
static_cast<autogen::BgpRouter *>(adj->GetObject());
if (!router)
continue;
const autogen::BgpRouterParams ¶ms = router->parameters();
string instance_name(IdentifierParent(adj->name()));
string name = adj->name().substr(instance_name.size() + 1);
if (name == localname && params.router_type != "bgpaas-client") {
local = adj;
} else if (instance_name != BgpConfigManager::kMasterInstance &&
params.router_type == "bgpaas-server") {
local = adj;
} else {
remote = adj;
}
}
if (local == NULL || remote == NULL) {
return false;
}
pair->first = local;
pair->second = remote;
return true;
}
//
// Constructor for BgpIfmapProtocolConfig.
//
BgpIfmapProtocolConfig::BgpIfmapProtocolConfig(BgpIfmapInstanceConfig *instance)
: instance_(instance),
data_(instance->name()) {
}
//
// Destructor for BgpIfmapProtocolConfig.
//
BgpIfmapProtocolConfig::~BgpIfmapProtocolConfig() {
}
const autogen::BgpRouterParams &BgpIfmapProtocolConfig::router_params() const {
return bgp_router_->parameters();
}
//
// Set the IFMapNodeProxy for the BgpIfmapProtocolConfig.
//
void BgpIfmapProtocolConfig::SetNodeProxy(IFMapNodeProxy *proxy) {
if (proxy != NULL) {
node_proxy_.Swap(proxy);
}
}
//
// Update autogen::BgpRouter object for this BgpIfmapProtocolConfig.
//
void BgpIfmapProtocolConfig::Update(BgpIfmapConfigManager *manager,
const autogen::BgpRouter *router) {
bgp_router_.reset(router);
const autogen::BgpRouterParams ¶ms = router->parameters();
data_.set_admin_down(params.admin_down);
data_.set_autonomous_system(params.autonomous_system);
data_.set_local_autonomous_system(params.local_autonomous_system);
boost::system::error_code err;
IpAddress identifier = IpAddress::from_string(params.identifier, err);
if (err == 0) {
data_.set_identifier(IpAddressToBgpIdentifier(identifier));
}
data_.set_hold_time(params.hold_time);
}
//
// Delete autogen::BgpRouter object for this BgpIfmapProtocolConfig.
//
void BgpIfmapProtocolConfig::Delete(BgpIfmapConfigManager *manager) {
manager->Notify(&data_, BgpConfigManager::CFG_DELETE);
bgp_router_.reset();
}
const string &BgpIfmapProtocolConfig::InstanceName() const {
return instance_->name();
}
//
// Constructor for BgpIfmapInstanceConfig.
//
BgpIfmapInstanceConfig::BgpIfmapInstanceConfig(const string &name)
: name_(name),
data_(name),
protocol_(NULL) {
}
//
// Destructor for BgpIfmapInstanceConfig.
//
BgpIfmapInstanceConfig::~BgpIfmapInstanceConfig() {
}
//
// Set the IFMapNodeProxy for the BgpIfmapInstanceConfig.
//
void BgpIfmapInstanceConfig::SetNodeProxy(IFMapNodeProxy *proxy) {
if (proxy != NULL) {
node_proxy_.Swap(proxy);
}
}
//
// Get the BgpIfmapProtocolConfig for this BgpIfmapInstanceConfig, create
// it if needed.
//
BgpIfmapProtocolConfig *BgpIfmapInstanceConfig::LocateProtocol() {
if (protocol_.get() == NULL) {
protocol_.reset(new BgpIfmapProtocolConfig(this));
}
return protocol_.get();
}
//
// Delete the BgpIfmapProtocolConfig for this BgpIfmapInstanceConfig.
//
void BgpIfmapInstanceConfig::ResetProtocol() {
protocol_.reset();
}
//
// Get the route-target for an instance-target. The input IFMapNode is the
// midnode that represents the instance-target link. We traverse the graph
// the graph edges till we find the adjacency to the route-target.
//
// Return true and fill in the target string if we find the route-target.
//
static bool GetInstanceTargetRouteTarget(DBGraph *graph, IFMapNode *node,
string *target) {
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
if (strcmp(adj->table()->Typename(), "route-target") == 0) {
*target = adj->name();
return true;
}
}
return false;
}
//
// Fill in all the export route targets for a routing-instance. The input
// IFMapNode represents the routing-instance. We traverse the graph edges
// and look for instance-target adjacencies. If the instance-target has is
// an export target i.e. it's not import-only, add the route-target to the
// vector.
//
static void GetRoutingInstanceExportTargets(DBGraph *graph, IFMapNode *node,
vector<string> *target_list) {
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
string target;
if ((strcmp(adj->table()->Typename(), "instance-target") == 0) &&
(GetInstanceTargetRouteTarget(graph, adj, &target))) {
const autogen::InstanceTarget *itarget =
dynamic_cast<autogen::InstanceTarget *>(adj->GetObject());
if (!itarget)
continue;
const autogen::InstanceTargetType &itt = itarget->data();
if (itt.import_export != "import")
target_list->push_back(target);
}
}
}
//
// Fill in all the export route targets of the routing-instance at the other
// end of a connection. The src_node is the routing-instance from which we
// reached the connection node. The name of the source routing-instance is
// src_instance.
//
// If the connection is unidirectional and the destination-instance for the
// connection is not the routing-instance from which we started, we should
// not get any targets from this connection. This is what a unidirectional
// connection means.
//
static void GetConnectionExportTargets(DBGraph *graph, IFMapNode *src_node,
const string &src_instance, IFMapNode *node,
vector<string> *target_list) {
const autogen::Connection *conn =
dynamic_cast<autogen::Connection *>(node->GetObject());
if (!conn)
return;
const autogen::ConnectionType &conn_type = conn->data();
if (!conn_type.destination_instance.empty() &&
conn_type.destination_instance != src_instance)
return;
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
if (adj == src_node)
continue;
if (strcmp(adj->table()->Typename(), "routing-instance") != 0)
continue;
GetRoutingInstanceExportTargets(graph, adj, target_list);
}
}
//
// Fill in all the routing-policies for a routing-instance. The input
// IFMapNode represents the routing-instance-routing-policy. We traverse to
// graph edges and look for routing-policy adjacency
//
static bool GetRoutingInstanceRoutingPolicy(DBGraph *graph, IFMapNode *node,
RoutingPolicyAttachInfo *ri_rp_link) {
std::string sequence;
const autogen::RoutingInstanceRoutingPolicy *policy =
static_cast<autogen::RoutingInstanceRoutingPolicy *>(node->GetObject());
const autogen::RoutingPolicyType &attach_info = policy->data();
if (!stringToInteger(attach_info.sequence, ri_rp_link->sequence_)) {
return false;
}
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
if (strcmp(adj->table()->Typename(), "routing-policy") == 0) {
ri_rp_link->routing_policy_ = adj->name();
return true;
}
}
return false;
}
//
// Get the network id for a virtual-network. The input IFMapNode represents
// the virtual-network.
//
static int GetVirtualNetworkIndex(DBGraph *graph, IFMapNode *node) {
const autogen::VirtualNetwork *vn =
static_cast<autogen::VirtualNetwork *>(node->GetObject());
if (vn && vn->IsPropertySet(autogen::VirtualNetwork::NETWORK_ID))
return vn->network_id();
if (vn && vn->IsPropertySet(autogen::VirtualNetwork::PROPERTIES))
return vn->properties().network_id;
return 0;
}
//
// Check if a virtual-network allows transit. The input IFMapNode represents
// the virtual-network.
//
static bool GetVirtualNetworkAllowTransit(DBGraph *graph, IFMapNode *node) {
const autogen::VirtualNetwork *vn =
static_cast<autogen::VirtualNetwork *>(node->GetObject());
if (vn && vn->IsPropertySet(autogen::VirtualNetwork::PROPERTIES))
return vn->properties().allow_transit;
return false;
}
//
// Get the vxlan id for a virtual-network. The input IFMapNode represents
// the virtual-network.
//
// The vxlan_network_identifier is 0 when automatic mode is in use. In that
// case, the network_id is used as vxlan id.
//
static int GetVirtualNetworkVxlanId(DBGraph *graph, IFMapNode *node) {
const autogen::VirtualNetwork *vn =
static_cast<autogen::VirtualNetwork *>(node->GetObject());
if (vn && vn->IsPropertySet(autogen::VirtualNetwork::PROPERTIES)) {
if (vn->properties().vxlan_network_identifier) {
return vn->properties().vxlan_network_identifier;
} else {
return vn->properties().network_id;
}
}
return 0;
}
static void SetStaticRouteConfig(BgpInstanceConfig *rti,
const autogen::RoutingInstance *config) {
BgpInstanceConfig::StaticRouteList inet_list;
BgpInstanceConfig::StaticRouteList inet6_list;
BOOST_FOREACH(const autogen::StaticRouteType &route,
config->static_route_entries()) {
boost::system::error_code ec;
StaticRouteConfig item;
item.nexthop = IpAddress::from_string(route.next_hop, ec);
if (ec != 0)
continue;
item.route_target = route.route_target;
if (item.nexthop.is_v4()) {
Ip4Address address;
ec = Ip4SubnetParse(route.prefix, &address, &item.prefix_length);
if (ec != 0)
continue;
item.address = address;
inet_list.push_back(item);
} else {
Ip6Address address;
ec = Inet6SubnetParse(route.prefix, &address, &item.prefix_length);
if (ec != 0)
continue;
item.address = address;
inet6_list.push_back(item);
}
}
rti->swap_static_routes(Address::INET, &inet_list);
rti->swap_static_routes(Address::INET6, &inet6_list);
}
static void SetServiceChainConfig(BgpInstanceConfig *rti,
const autogen::RoutingInstance *config) {
BgpInstanceConfig::ServiceChainList list;
const autogen::ServiceChainInfo &inet_chain =
config->service_chain_information();
if (config->IsPropertySet(
autogen::RoutingInstance::SERVICE_CHAIN_INFORMATION)) {
ServiceChainConfig item = {
Address::INET,
inet_chain.routing_instance,
inet_chain.prefix,
inet_chain.service_chain_address,
inet_chain.service_instance,
inet_chain.source_routing_instance
};
list.push_back(item);
}
const autogen::ServiceChainInfo &inet6_chain =
config->ipv6_service_chain_information();
if (config->IsPropertySet(
autogen::RoutingInstance::IPV6_SERVICE_CHAIN_INFORMATION)) {
ServiceChainConfig item = {
Address::INET6,
inet6_chain.routing_instance,
inet6_chain.prefix,
inet6_chain.service_chain_address,
inet6_chain.service_instance,
inet6_chain.source_routing_instance
};
list.push_back(item);
}
rti->swap_service_chain_list(&list);
}
void BgpIfmapConfigManager::ProcessRoutingPolicyLink(const BgpConfigDelta &delta) {
CHECK_CONCURRENCY("bgp::Config");
BgpIfmapRoutingPolicyLinkConfig *ri_rp_link
= config_->FindRoutingPolicyLink(delta.id_name);
if (ri_rp_link == NULL) {
IFMapNodeProxy *proxy = delta.node.get();
if (proxy == NULL) {
return;
}
IFMapNode *node = proxy->node();
if (node == NULL || delta.obj.get() == NULL) {
return;
}
pair<IFMapNode *, IFMapNode *> ri_rp_pair;
if (!BgpIfmapRoutingPolicyLinkConfig::GetRoutingInstanceRoutingPolicyPair(
db_graph_, node, &ri_rp_pair)) {
return;
}
std::string instance_name = ri_rp_pair.first->name();
std::string policy_name = ri_rp_pair.second->name();
BgpIfmapInstanceConfig *rti =
config_->FindInstance(instance_name);
BgpIfmapRoutingPolicyConfig *rtp =
config_->FindRoutingPolicy(policy_name);
if (!rti || !rtp) {
return;
}
ri_rp_link = config_->CreateRoutingPolicyLink(rti, rtp, proxy);
} else {
const IFMapNode *node = ri_rp_link->node();
assert(node != NULL);
if (delta.obj.get() == NULL) {
BgpIfmapRoutingPolicyConfig *rtp = ri_rp_link->policy();
BgpIfmapInstanceConfig *rti = ri_rp_link->instance();
config_->DeleteRoutingPolicyLink(ri_rp_link);
if (rtp->DeleteIfEmpty(this)) {
config_->DeleteRoutingPolicy(rtp);
}
if (rti->DeleteIfEmpty(this)) {
BGP_CONFIG_LOG_INSTANCE(Delete, server(), rti,
SandeshLevel::SYS_DEBUG, BGP_LOG_FLAG_ALL);
config_->DeleteInstance(rti);
}
return;
}
}
autogen::RoutingInstanceRoutingPolicy *ri_rp_link_cfg =
static_cast<autogen::RoutingInstanceRoutingPolicy *>(delta.obj.get());
ri_rp_link->Update(this, ri_rp_link_cfg);
}
static bool CompareRoutingPolicyOrder(const RoutingPolicyAttachInfo &lhs,
const RoutingPolicyAttachInfo &rhs) {
return (lhs.sequence_ < rhs.sequence_);
}
//
// Update BgpIfmapInstanceConfig based on a new autogen::RoutingInstance object.
//
// Rebuild the import and export route target lists and update the virtual
// network information.
//
// Targets that are configured on this routing-instance (which corresponds
// to all adjacencies to instance-target) are added to the import list or
// export list or both depending on the import_export attribute.
//
// Export targets for all other routing-instances that we are connected to
// are added to our import list.
//
void BgpIfmapInstanceConfig::Update(BgpIfmapConfigManager *manager,
const autogen::RoutingInstance *config) {
BgpInstanceConfig::RouteTargetList import_list, export_list;
BgpInstanceConfig::RoutingPolicyList policy_list;
data_.Clear();
DBGraph *graph = manager->graph();
IFMapNode *node = node_proxy_.node();
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
if (strcmp(adj->table()->Typename(), "instance-target") == 0) {
string target;
if (GetInstanceTargetRouteTarget(graph, adj, &target)) {
const autogen::InstanceTarget *itarget =
dynamic_cast<autogen::InstanceTarget *>(adj->GetObject());
if (!itarget)
continue;
const autogen::InstanceTargetType &itt = itarget->data();
if (itt.import_export == "import") {
import_list.insert(target);
} else if (itt.import_export == "export") {
export_list.insert(target);
} else {
import_list.insert(target);
export_list.insert(target);
}
}
} else if (strcmp(adj->table()->Typename(),
"routing-instance-routing-policy") == 0) {
RoutingPolicyAttachInfo policy_info;
if (GetRoutingInstanceRoutingPolicy(graph, adj, &policy_info)) {
policy_list.push_back(policy_info);
}
} else if (strcmp(adj->table()->Typename(), "connection") == 0) {
vector<string> target_list;
GetConnectionExportTargets(graph, node, name_, adj, &target_list);
BOOST_FOREACH(string target, target_list) {
import_list.insert(target);
}
} else if (strcmp(adj->table()->Typename(), "virtual-network") == 0) {
data_.set_virtual_network(adj->name());
data_.set_virtual_network_index(GetVirtualNetworkIndex(graph, adj));
data_.set_virtual_network_allow_transit(
GetVirtualNetworkAllowTransit(graph, adj));
data_.set_vxlan_id(GetVirtualNetworkVxlanId(graph, adj));
}
}
data_.set_import_list(import_list);
data_.set_export_list(export_list);
std::sort(policy_list.begin(), policy_list.end(), CompareRoutingPolicyOrder);
data_.swap_routing_policy_list(&policy_list);
if (config) {
data_.set_has_pnf(config->has_pnf());
SetStaticRouteConfig(&data_, config);
SetServiceChainConfig(&data_, config);
}
}
//
// Reset IFMap related state in the BgpIfmapInstanceConfig.
//
void BgpIfmapInstanceConfig::ResetConfig() {
node_proxy_.Clear();
}
//