/
loadbalancer.cc
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loadbalancer.cc
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/*
* Copyright (c) 2014 Juniper Networks, Inc. All rights reserved.
*/
#include "loadbalancer.h"
#include "ifmap/ifmap_node.h"
#include "oper/ifmap_dependency_manager.h"
#include "loadbalancer_properties.h"
#include <oper/agent_sandesh.h>
#include <oper/agent_types.h>
class LoadbalancerData : public AgentData {
public:
typedef LoadbalancerProperties Properties;
LoadbalancerData(IFMapNode *node)
: node_(node) {
}
LoadbalancerData(const Properties &properties)
: node_(NULL), properties_(properties) {
}
IFMapNode *node() { return node_; }
const Properties &properties() { return properties_; }
private:
IFMapNode *node_;
Properties properties_;
};
Loadbalancer::Loadbalancer() {
}
Loadbalancer::~Loadbalancer() {
}
bool Loadbalancer::IsLess(const DBEntry &rhs) const {
const Loadbalancer &lb = static_cast<const Loadbalancer &>(rhs);
return uuid_ < lb.uuid_;
}
std::string Loadbalancer::ToString() const {
return UuidToString(uuid_);
}
void Loadbalancer::SetKey(const DBRequestKey *key) {
const LoadbalancerKey *lbkey = static_cast<const LoadbalancerKey *>(key);
uuid_ = lbkey->instance_id();
}
DBEntryBase::KeyPtr Loadbalancer::GetDBRequestKey() const {
LoadbalancerKey *key = new LoadbalancerKey(uuid_);
return KeyPtr(key);
}
void Loadbalancer::set_properties(const Properties &properties) {
properties_.reset(new Properties(properties));
}
const Loadbalancer::Properties *Loadbalancer::properties() const {
return properties_.get();
}
static boost::uuids::uuid IdPermsGetUuid(const autogen::IdPermsType &id) {
boost::uuids::uuid uuid;
CfgUuidSet(id.uuid.uuid_mslong, id.uuid.uuid_lslong, uuid);
return uuid;
}
static void PropertiesAddMember(
IFMapNode *node, LoadbalancerProperties *properties) {
autogen::LoadbalancerMember *member =
static_cast<autogen::LoadbalancerMember *>(node->GetObject());
properties->members()->insert(
std::make_pair(IdPermsGetUuid(member->id_perms()),
member->properties()));
}
static void PropertiesAddHealthmonitor(
IFMapNode *node, LoadbalancerProperties *properties) {
autogen::LoadbalancerHealthmonitor *healthmon =
static_cast<autogen::LoadbalancerHealthmonitor *>(
node->GetObject());
properties->healthmonitors()->insert(
std::make_pair(IdPermsGetUuid(healthmon->id_perms()),
healthmon->properties()));
}
bool Loadbalancer::DBEntrySandesh(Sandesh *sresp, std::string &name) const {
LoadBalancerResp *resp = static_cast<LoadBalancerResp*> (sresp);
std::string str_uuid = UuidToString(uuid_);
if (! name.empty() && str_uuid != name) {
return false;
}
LoadBalancerSandeshData data;
data.set_uuid(str_uuid);
const autogen::VirtualIpType &vip =
properties_.get()->vip_properties();
data.set_vip_address(vip.address);
data.set_port(vip.protocol_port);
const autogen::LoadbalancerPoolType &pool = properties()->pool_properties();
data.set_mode(pool.protocol);
data.set_balance(pool.loadbalancer_method);
if (properties()->healthmonitors().size()) {
const autogen::LoadbalancerHealthmonitorType &hm =
properties()->healthmonitors().begin()->second;
data.set_inter(hm.timeout * 1000);
data.set_fall(hm.max_retries);
data.set_rise(1);
if (!hm.expected_codes.empty()) {
data.set_expected_codes(hm.expected_codes);
if (!hm.http_method.empty()) {
data.set_http_method(hm.http_method);
}
if (!hm.url_path.empty()) {
data.set_url_path(hm.url_path);
}
}
}
std::vector<std::string> members;
for (LoadbalancerProperties::MemberMap::const_iterator iter =
properties()->members().begin();
iter != properties()->members().end(); ++iter) {
autogen::LoadbalancerMemberType member = iter->second;
members.push_back(member.address);
}
data.set_member_list(members);
std::vector<LoadBalancerSandeshData> &list =
const_cast<std::vector<LoadBalancerSandeshData>&>
(resp->get_load_balancer_list());
list.push_back(data);
return true;
}
void LoadBalancerReq::HandleRequest() const {
AgentSandeshPtr sand(new AgentLoadBalancerSandesh(context(),get_uuid()));
sand->DoSandesh(sand);
}
AgentSandeshPtr LoadbalancerTable::GetAgentSandesh
(const AgentSandeshArguments *args, const std::string &context) {
return AgentSandeshPtr
(new AgentLoadBalancerSandesh(context, args->GetString("name")));
}
/*
* LoadbalancerTable class
*/
LoadbalancerTable::LoadbalancerTable(DB *db, const std::string &name)
: AgentDBTable(db, name),
graph_(NULL), dependency_manager_(NULL) {
}
LoadbalancerTable::~LoadbalancerTable() {
}
#if 0
void LoadbalancerTable::Clear() {
DBEntry *db, *db_next;
DBTablePartition *partition = static_cast<DBTablePartition *>(
GetTablePartition(0));
for (db = partition->GetFirst(); db!= NULL; db = db_next) {
db_next = partition->GetNext(db);
if (db->IsDeleted()) {
continue;
}
partition->Delete(db);
}
}
#endif
std::auto_ptr<DBEntry> LoadbalancerTable::AllocEntry(
const DBRequestKey *key) const {
std::auto_ptr<DBEntry> entry(new Loadbalancer());
entry->SetKey(key);
return entry;
}
DBEntry *LoadbalancerTable::Add(const DBRequest *request) {
Loadbalancer *loadbalancer = new Loadbalancer();
loadbalancer->SetKey(request->key.get());
LoadbalancerData *data =
static_cast<LoadbalancerData *>(request->data.get());
assert(dependency_manager_);
loadbalancer->SetIFMapNodeState(
dependency_manager_->SetState(data->node()));
dependency_manager_->SetObject(data->node(), loadbalancer);
assert(graph_);
LoadbalancerProperties properties;
CalculateProperties(graph_, data->node(), &properties);
loadbalancer->set_properties(properties);
return loadbalancer;
}
bool LoadbalancerTable::Delete(DBEntry *entry, const DBRequest *request) {
Loadbalancer *loadbalancer = static_cast<Loadbalancer *>(entry);
assert(dependency_manager_);
if (loadbalancer->ifmap_node()) {
dependency_manager_->SetObject(loadbalancer->ifmap_node(), NULL);
loadbalancer->SetIFMapNodeState(NULL);
}
return true;
}
bool LoadbalancerTable::OnChange(DBEntry *entry, const DBRequest *request) {
Loadbalancer *loadbalancer = static_cast<Loadbalancer *>(entry);
LoadbalancerData *data = static_cast<LoadbalancerData *>(
request->data.get());
loadbalancer->SetKey(request->key.get());
if (data->node() == NULL) {
loadbalancer->set_properties(data->properties());
} else {
assert(graph_);
LoadbalancerProperties properties;
CalculateProperties(graph_, data->node(), &properties);
loadbalancer->set_properties(properties);
}
return true;
}
void LoadbalancerTable::Initialize(
DBGraph *graph, IFMapDependencyManager *dependency_manager) {
graph_ = graph;
dependency_manager_ = dependency_manager;
dependency_manager_->Register(
"loadbalancer-pool",
boost::bind(&LoadbalancerTable::ChangeEventHandler, this, _1, _2));
}
bool LoadbalancerTable::IFNodeToUuid(IFMapNode *node, boost::uuids::uuid &u) {
autogen::LoadbalancerPool *pool =
static_cast<autogen::LoadbalancerPool *>(node->GetObject());
const autogen::IdPermsType &id = pool->id_perms();
u = IdPermsGetUuid(id);
return true;
}
bool LoadbalancerTable::IFNodeToReq(IFMapNode *node, DBRequest &request,
const boost::uuids::uuid &id) {
assert(!id.is_nil());
request.key.reset(new LoadbalancerKey(id));
if (request.oper == DBRequest::DB_ENTRY_DELETE || node->IsDeleted()) {
request.oper = DBRequest::DB_ENTRY_DELETE;
return true;
}
request.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
IFMapNodeState *state = dependency_manager_->IFMapNodeGet(node);
const LoadbalancerProperties *current = NULL;
LoadbalancerProperties properties;
assert(graph_);
CalculateProperties(graph_, node, &properties);
Loadbalancer *loadbalancer = static_cast<Loadbalancer *>(state->object());
if (!loadbalancer || loadbalancer->uuid() != id) {
request.data.reset(new LoadbalancerData(node));
} else {
current = loadbalancer->properties();
if (current) {
if (properties.CompareTo(*current) == 0)
return false;
}
LOG(DEBUG, "loadbalancer property change "
<< properties.DiffString(current));
request.data.reset(new LoadbalancerData(properties));
}
return true;
}
void LoadbalancerTable::CalculateProperties(DBGraph *graph, IFMapNode
*node, LoadbalancerProperties *properties) {
autogen::LoadbalancerPool *pool =
static_cast<autogen::LoadbalancerPool *>(node->GetObject());
properties->set_pool_properties(pool->properties());
properties->set_custom_attributes(pool->custom_attributes());
for (DBGraphVertex::adjacency_iterator iter = node->begin(graph);
iter != node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
const char *adjtype = adj->table()->Typename();
if (strcmp(adjtype, "virtual-ip") == 0) {
autogen::VirtualIp *vip =
static_cast<autogen::VirtualIp *>(adj->GetObject());
properties->set_vip_uuid(IdPermsGetUuid(vip->id_perms()));
properties->set_vip_properties(vip->properties());
} else if (strcmp(adjtype, "loadbalancer-member") == 0) {
PropertiesAddMember(adj, properties);
} else if (strcmp(adjtype, "loadbalancer-healthmonitor") == 0) {
PropertiesAddHealthmonitor(adj, properties);
}
}
}
void LoadbalancerTable::ChangeEventHandler(IFMapNode *node, DBEntry *entry) {
DBRequest req;
boost::uuids::uuid new_uuid;
IFNodeToUuid(node, new_uuid);
IFMapNodeState *state = dependency_manager_->IFMapNodeGet(node);
boost::uuids::uuid old_uuid = state->uuid();
if (!node->IsDeleted()) {
if (entry) {
if ((old_uuid != new_uuid)) {
if (old_uuid != boost::uuids::nil_uuid()) {
req.oper = DBRequest::DB_ENTRY_DELETE;
if (IFNodeToReq(node, req, old_uuid) == true) {
assert(req.oper == DBRequest::DB_ENTRY_DELETE);
Enqueue(&req);
}
}
}
}
state->set_uuid(new_uuid);
req.oper = DBRequest::DB_ENTRY_ADD_CHANGE;
} else {
req.oper = DBRequest::DB_ENTRY_DELETE;
new_uuid = old_uuid;
}
if (IFNodeToReq(node, req, new_uuid) == true) {
Enqueue(&req);
}
}
DBTableBase *LoadbalancerTable::CreateTable(
DB *db, const std::string &name) {
LoadbalancerTable *table = new LoadbalancerTable(db, name);
table->Init();
return table;
}