/
agent_param.cc
1331 lines (1195 loc) · 49.6 KB
/
agent_param.cc
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
/*
* Agent parameters are derived from 3 entities in increasing priority,
* - System information
* - Configuration file
* - Parameters
*/
#include "base/os.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/resource.h>
#include <net/if_arp.h>
#include <unistd.h>
#include <iostream>
#include <boost/property_tree/ini_parser.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/foreach.hpp>
#include <boost/program_options.hpp>
#include <base/logging.h>
#include <base/misc_utils.h>
#include <sandesh/sandesh_types.h>
#include <sandesh/sandesh.h>
#include <sandesh/sandesh_trace.h>
#include <cmn/agent_cmn.h>
#include <init/agent_param.h>
#include <vgw/cfg_vgw.h>
using namespace std;
using namespace boost::property_tree;
using boost::optional;
namespace opt = boost::program_options;
template <typename ElementType>
bool AgentParam::GetOptValueImpl(
const boost::program_options::variables_map &var_map,
std::vector<ElementType> &var, const std::string &val,
std::vector<ElementType>*) {
// Check if the value is present.
if (var_map.count(val) && !var_map[val].defaulted()) {
std::vector<ElementType> tmp(
var_map[val].as<std::vector<ElementType> >());
// Now split the individual elements
for (typename std::vector<ElementType>::const_iterator it =
tmp.begin();
it != tmp.end(); it++) {
std::stringstream ss(*it);
std::copy(istream_iterator<ElementType>(ss),
istream_iterator<ElementType>(),
std::back_inserter(var));
}
return true;
}
return false;
}
bool AgentParam::GetIpAddress(const string &str, Ip4Address *addr) {
boost::system::error_code ec;
Ip4Address tmp = Ip4Address::from_string(str, ec);
if (ec.value() != 0) {
return false;
}
*addr = tmp;
return true;
}
bool AgentParam::ParseIp(const string &key, Ip4Address *server) {
optional<string> opt_str;
if (opt_str = tree_.get_optional<string>(key)) {
Ip4Address addr;
if (GetIpAddress(opt_str.get(), &addr) == false) {
LOG(ERROR, "Error in config file <" << config_file_
<< ">. Error parsing IP address from <"
<< opt_str.get() << ">");
return false;
} else {
*server = addr;
}
}
return true;
}
bool AgentParam::ParseServerList(const string &key, Ip4Address *server1,
Ip4Address *server2) {
optional<string> opt_str;
Ip4Address addr;
vector<string> tokens;
if (opt_str = tree_.get_optional<string>(key)) {
boost::split(tokens, opt_str.get(), boost::is_any_of(" \t"));
if (tokens.size() > 2) {
LOG(ERROR, "Error in config file <" << config_file_
<< ">. Cannot have more than 2 servers <"
<< opt_str.get() << ">");
return false;
}
vector<string>::iterator it = tokens.begin();
if (it != tokens.end()) {
if (!GetIpAddress(*it, server1)) {
return false;
}
++it;
if (it != tokens.end()) {
if (!GetIpAddress(*it, server2)) {
return false;
}
}
}
}
return true;
}
// Parse address string in the form <ip>:<port>
bool AgentParam::ParseAddress(const std::string &addr_string,
Ip4Address *server, uint16_t *port) {
vector<string> tokens;
boost::split(tokens, addr_string, boost::is_any_of(":"));
if (tokens.size() > 2) {
cout << "Error in config file <" << config_file_
<< ">. Improper server address <" << addr_string << ">\n";
return false;
}
vector<string>::iterator it = tokens.begin();
if (!GetIpAddress(*it, server)) {
cout << "Error in config file <" << config_file_
<< ">. Improper server address <" << addr_string << ">\n";
return false;
}
++it;
if (it != tokens.end()) {
stringToInteger(*it, *port);
}
return true;
}
// Parse list of servers in the <ip1>:<port1> <ip2>:<port2> format
bool AgentParam::ParseServerList(const std::string &key,
Ip4Address *server1, uint16_t *port1,
Ip4Address *server2, uint16_t *port2) {
optional<string> opt_str;
if (opt_str = tree_.get_optional<string>(key)) {
vector<string> tokens;
boost::split(tokens, opt_str.get(), boost::is_any_of(" \t"));
if (tokens.size() > 2) {
cout << "Error in config file <" << config_file_
<< ">. Cannot have more than 2 DNS servers <"
<< opt_str.get() << ">\n";
return false;
}
vector<string>::iterator it = tokens.begin();
if (it != tokens.end()) {
if (!ParseAddress(*it, server1, port1))
return false;
++it;
if (it != tokens.end()) {
return ParseAddress(*it, server2, port2);
}
}
}
return true;
}
void AgentParam::ParseIpArgument
(const boost::program_options::variables_map &var_map, Ip4Address &server,
const string &key) {
if (var_map.count(key)) {
Ip4Address addr;
if (GetIpAddress(var_map[key].as<string>(), &addr)) {
server = addr;
}
}
}
bool AgentParam::ParseServerListArguments
(const boost::program_options::variables_map &var_map, Ip4Address &server1,
Ip4Address &server2, const string &key) {
if (var_map.count(key)) {
vector<string> value = var_map[key].as<vector<string> >();
if (value.size() > 2) {
cout << "Error in Arguments. Cannot have more than 2 servers for "
<< key << "\n";
return false;
}
vector<string>::iterator it = value.begin();
Ip4Address addr;
if (it != value.end()) {
if (GetIpAddress(*it, &addr)) {
server1 = addr;
}
++it;
if (it != value.end()) {
if (GetIpAddress(*it, &addr)) {
server2 = addr;
}
}
}
}
return true;
}
bool AgentParam::ParseServerListArguments
(const boost::program_options::variables_map &var_map, Ip4Address *server1,
uint16_t *port1, Ip4Address *server2, uint16_t *port2,
const std::string &key) {
if (var_map.count(key)) {
vector<string> value = var_map[key].as<vector<string> >();
if (value.size() > 2) {
LOG(ERROR, "Error in Arguments. Cannot have more than 2 servers "
"for " << key );
return false;
}
vector<string>::iterator it = value.begin();
if (it != value.end()) {
if (!ParseAddress(*it, server1, port1))
return false;
++it;
if (it != value.end()) {
return ParseAddress(*it, server2, port2);
}
}
}
return true;
}
void AgentParam::ParseCollector() {
optional<string> opt_str;
if (opt_str = tree_.get_optional<string>("DEFAULT.collectors")) {
boost::split(collector_server_list_, opt_str.get(),
boost::is_any_of(" "));
}
}
void AgentParam::BuildAddressList(const string &val) {
compute_node_address_list_.clear();
if (val.empty()) {
return;
}
vector<string> tokens;
boost::split(tokens, val, boost::is_any_of(" "));
vector<string>::iterator it = tokens.begin();
while (it != tokens.end()) {
std::string str = *it;
++it;
boost::algorithm::trim(str);
Ip4Address addr;
if (GetIpAddress(str, &addr)) {
compute_node_address_list_.push_back(addr);
} else {
LOG(ERROR, "Error in parsing address " << *it);
}
}
}
void AgentParam::ParseVirtualHost() {
boost::system::error_code ec;
optional<string> opt_str;
GetValueFromTree<string>(vhost_.name_, "VIRTUAL-HOST-INTERFACE.name");
if (opt_str = tree_.get_optional<string>("VIRTUAL-HOST-INTERFACE.ip")) {
ec = Ip4PrefixParse(opt_str.get(), &vhost_.addr_, &vhost_.plen_);
if (ec != 0 || vhost_.plen_ > 32) {
cout << "Error in config file <" << config_file_
<< ">. Error parsing vhost ip-address from <"
<< opt_str.get() << ">\n";
}
}
if (opt_str = tree_.get_optional<string>("VIRTUAL-HOST-INTERFACE.gateway")) {
if (GetIpAddress(opt_str.get(), &vhost_.gw_) == false) {
cout << "Error in config file <" << config_file_
<< ">. Error parsing vhost gateway address from <"
<< opt_str.get() << ">\n";
}
}
GetValueFromTree<string>(eth_port_,
"VIRTUAL-HOST-INTERFACE.physical_interface");
if (opt_str = tree_.get_optional<string>
("VIRTUAL-HOST-INTERFACE.compute_node_address")) {
BuildAddressList(opt_str.get());
}
}
void AgentParam::ParseDiscovery() {
GetValueFromTree<string>(dss_server_, "DISCOVERY.server");
GetValueFromTree<uint32_t>(dss_port_, "DISCOVERY.port");
if (!GetValueFromTree<uint16_t>(xmpp_instance_count_,
"DISCOVERY.max_control_nodes")) {
xmpp_instance_count_ = 2;
}
}
void AgentParam::ParseNetworks() {
ParseIp("NETWORKS.control_network_ip", &mgmt_ip_);
}
void AgentParam::ParseHypervisor() {
optional<string> opt_str;
if (opt_str = tree_.get_optional<string>("HYPERVISOR.type")) {
// Initialize mode to KVM. Will be overwritten for XEN later
hypervisor_mode_ = AgentParam::MODE_KVM;
if (opt_str.get() == "xen") {
hypervisor_mode_ = AgentParam::MODE_XEN;
GetValueFromTree<string>(xen_ll_.name_,
"HYPERVISOR.xen_ll_interface");
boost::system::error_code ec;
if (opt_str = tree_.get_optional<string>
("HYPERVISOR.xen_ll_ip")) {
ec = Ip4PrefixParse(opt_str.get(), &xen_ll_.addr_,
&xen_ll_.plen_);
if (ec != 0 || xen_ll_.plen_ >= 32) {
cout << "Error in config file <" << config_file_
<< ">. Error parsing Xen Link-local ip-address from <"
<< opt_str.get() << ">\n";
return;
}
}
} else if (opt_str.get() == "vmware") {
hypervisor_mode_ = AgentParam::MODE_VMWARE;
GetValueFromTree<string>(vmware_physical_port_,
"HYPERVISOR.vmware_physical_interface");
} else if (opt_str.get() == "docker") {
hypervisor_mode_ = AgentParam::MODE_DOCKER;
} else {
hypervisor_mode_ = AgentParam::MODE_KVM;
}
}
if (opt_str = tree_.get_optional<string>("HYPERVISOR.vmware_mode")) {
if (opt_str.get() == "vcenter") {
vmware_mode_ = VCENTER;
} else if (opt_str.get() == "esxi_neutron") {
vmware_mode_ = ESXI_NEUTRON;
} else {
cout << "Error in config file <" << config_file_ <<
">. Error parsing vmware_mode from <"
<< opt_str.get() << ">\n";
return;
}
}
}
void AgentParam::ParsePlatform() {
std::string vrouter_platform;
GetValueFromTree<string>(vrouter_platform, "DEFAULT.platform");
if (vrouter_platform=="nic") {
platform_ = AgentParam::VROUTER_ON_NIC;
} else if (vrouter_platform=="dpdk") {
platform_ = AgentParam::VROUTER_ON_HOST_DPDK;
GetValueFromTree<string>(physical_interface_pci_addr_,
"DEFAULT.physical_interface_address");
GetValueFromTree<string>(physical_interface_mac_addr_,
"DEFAULT.physical_interface_mac");
} else {
platform_ = AgentParam::VROUTER_ON_HOST;
}
}
void AgentParam::ParseDefaultSection() {
optional<string> opt_str;
optional<unsigned int> opt_uint;
GetValueFromTree<string>(host_name_, "DEFAULT.hostname");
GetValueFromTree<string>(agent_name_, "DEFAULT.agent_name");
if (!GetValueFromTree<uint16_t>(http_server_port_,
"DEFAULT.http_server_port")) {
http_server_port_ = ContrailPorts::HttpPortAgent();
}
GetValueFromTree<string>(tunnel_type_, "DEFAULT.tunnel_type");
if ((tunnel_type_ != "MPLSoUDP") && (tunnel_type_ != "VXLAN"))
tunnel_type_ = "MPLSoGRE";
if (!GetValueFromTree<uint16_t>(flow_cache_timeout_,
"DEFAULT.flow_cache_timeout")) {
flow_cache_timeout_ = Agent::kDefaultFlowCacheTimeout;
}
if (!GetValueFromTree<string>(log_level_, "DEFAULT.log_level")) {
log_level_ = "SYS_DEBUG";
}
if (!GetValueFromTree<string>(log_file_, "DEFAULT.log_file")) {
log_file_ = Agent::GetInstance()->log_file();
}
if (!GetValueFromTree<int>(log_files_count_, "DEFAULT.log_files_count")) {
log_files_count_ = 10;
}
if (!GetValueFromTree<long>(log_file_size_, "DEFAULT.log_file_size")) {
log_file_size_ = 1024*1024;
}
if (!GetValueFromTree<string>(log_category_, "DEFAULT.log_category")) {
log_category_ = "";
}
if (optional<bool> log_local_opt =
tree_.get_optional<bool>("DEFAULT.log_local")) {
log_local_ = true;
} else {
log_local_ = false;
}
if (optional<bool> debug_opt =
tree_.get_optional<bool>("DEFAULT.debug")) {
debug_ = true;
} else {
debug_ = false;
}
GetValueFromTree<bool>(use_syslog_, "DEFAULT.use_syslog");
if (!GetValueFromTree<string>(syslog_facility_, "DEFAULT.syslog_facility")) {
syslog_facility_ = "LOG_LOCAL0";
}
if (optional<bool> log_flow_opt =
tree_.get_optional<bool>("DEFAULT.log_flow")) {
log_flow_ = true;
} else {
log_flow_ = false;
}
GetValueFromTree<bool>(disable_flow_collection_, "DEFAULT.disable_flow_collection");
if (!GetValueFromTree<bool>(xmpp_auth_enable_, "DEFAULT.xmpp_auth_enable")) {
xmpp_auth_enable_ = false;
}
if (!GetValueFromTree<string>(xmpp_server_cert_, "DEFAULT.xmpp_server_cert")) {
xmpp_server_cert_ = "/etc/contrail/ssl/certs/server.pem";
}
if (!GetValueFromTree<string>(log_property_file_, "DEFAULT.log_property_file")) {
log_property_file_ = "";
}
if (!GetValueFromTree<int>(tcp_hold_time_, "DEFAULT.tcp_hold_time")) {
tcp_hold_time_ = 30;
}
if (!GetValueFromTree<uint32_t>(send_ratelimit_,
"DEFAULT.sandesh_send_rate_limit")) {
send_ratelimit_ = Sandesh::get_send_rate_limit();
}
}
void AgentParam::ParseTaskSection() {
if (!GetValueFromTree<uint32_t>(tbb_exec_delay_,
"TASK.log_exec_threshold")) {
tbb_exec_delay_ = 0;
}
if (!GetValueFromTree<uint32_t>(tbb_schedule_delay_,
"TASK.log_schedule_threshold")) {
tbb_schedule_delay_ = 0;
}
if (!GetValueFromTree<uint32_t>(tbb_keepawake_timeout_,
"TASK.tbb_keepawake_timeout")) {
tbb_keepawake_timeout_ = Agent::kDefaultTbbKeepawakeTimeout;
}
}
void AgentParam::ParseMetadataProxy() {
GetValueFromTree<string>(metadata_shared_secret_,
"METADATA.metadata_proxy_secret");
}
void AgentParam::ParseFlows() {
if (!GetValueFromTree<float>(max_vm_flows_, "FLOWS.max_vm_flows")) {
max_vm_flows_ = (float) 100;
}
if (!GetValueFromTree<uint16_t>(linklocal_system_flows_,
"FLOWS.max_system_linklocal_flows")) {
linklocal_system_flows_ = Agent::kDefaultMaxLinkLocalOpenFds;
}
if (!GetValueFromTree<uint16_t>(linklocal_vm_flows_,
"FLOWS.max_vm_linklocal_flows")) {
linklocal_vm_flows_ = Agent::kDefaultMaxLinkLocalOpenFds;
}
}
void AgentParam::ParseHeadlessMode() {
if (!GetValueFromTree<bool>(headless_mode_, "DEFAULT.headless_mode")) {
headless_mode_ = false;
}
}
void AgentParam::ParseDhcpRelayMode() {
if (!GetValueFromTree<bool>(dhcp_relay_mode_, "DEFAULT.dhcp_relay_mode")) {
dhcp_relay_mode_ = false;
}
}
void AgentParam::ParseAgentInfo() {
std::string mode;
GetValueFromTree<string>(mode, "DEFAULT.agent_mode");
set_agent_mode(mode);
if (!GetValueFromTree<string>(agent_base_dir_,
"DEFAULT.agent_base_directory")) {
agent_base_dir_ = "/var/lib/contrail";
}
}
void AgentParam::set_agent_mode(const std::string &mode) {
std::string agent_mode = boost::to_lower_copy(mode);
if (agent_mode == "tsn")
agent_mode_ = TSN_AGENT;
else if (agent_mode == "tor")
agent_mode_ = TOR_AGENT;
else
agent_mode_ = VROUTER_AGENT;
}
void AgentParam::ParseSimulateEvpnTor() {
if (!GetValueFromTree<bool>(simulate_evpn_tor_,
"DEFAULT.simulate_evpn_tor")) {
simulate_evpn_tor_ = false;
}
}
void AgentParam::ParseServiceInstance() {
GetValueFromTree<string>(si_netns_command_,
"SERVICE-INSTANCE.netns_command");
GetValueFromTree<string>(si_docker_command_,
"SERVICE-INSTANCE.docker_command");
GetValueFromTree<int>(si_netns_workers_,
"SERVICE-INSTANCE.netns_workers");
GetValueFromTree<int>(si_netns_timeout_,
"SERVICE-INSTANCE.netns_timeout");
GetValueFromTree<string>(si_haproxy_ssl_cert_path_,
"SERVICE-INSTANCE.haproxy_ssl_cert_path");
}
void AgentParam::ParseNexthopServer() {
GetValueFromTree<string>(nexthop_server_endpoint_,
"NEXTHOP-SERVER.endpoint");
GetValueFromTree<bool>(nexthop_server_add_pid_,
"NEXTHOP-SERVER.add_pid");
if (nexthop_server_add_pid_) {
std::stringstream ss;
ss << nexthop_server_endpoint_ << "." << getpid();
nexthop_server_endpoint_ = ss.str();
}
}
void AgentParam::ParseCollectorArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue< vector<string> >(var_map, collector_server_list_,
"DEFAULT.collectors");
}
void AgentParam::ParseVirtualHostArguments
(const boost::program_options::variables_map &var_map) {
boost::system::error_code ec;
GetOptValue<string>(var_map, vhost_.name_, "VIRTUAL-HOST-INTERFACE.name");
string ip;
if (GetOptValue<string>(var_map, ip, "VIRTUAL-HOST-INTERFACE.ip")) {
ec = Ip4PrefixParse(ip, &vhost_.addr_, &vhost_.plen_);
if (ec != 0 || vhost_.plen_ >= 32) {
cout << "Error parsing vhost ip argument from <" << ip << ">\n";
}
}
ParseIpArgument(var_map, vhost_.gw_, "VIRTUAL-HOST-INTERFACE.gateway");
GetOptValue<string>(var_map, eth_port_,
"VIRTUAL-HOST-INTERFACE.physical_interface");
}
void AgentParam::ParseDiscoveryArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<string>(var_map, dss_server_, "DISCOVERY.server");
GetOptValue<uint32_t>(var_map, dss_port_, "DISCOVERY.port");
GetOptValue<uint16_t>(var_map, xmpp_instance_count_,
"DISCOVERY.max_control_nodes");
}
void AgentParam::ParseNetworksArguments
(const boost::program_options::variables_map &var_map) {
ParseIpArgument(var_map, mgmt_ip_, "NETWORKS.control_network_ip");
}
void AgentParam::ParseHypervisorArguments
(const boost::program_options::variables_map &var_map) {
boost::system::error_code ec;
if (var_map.count("HYPERVISOR.type") &&
!var_map["HYPERVISOR.type"].defaulted()) {
if (var_map["HYPERVISOR.type"].as<string>() == "xen") {
hypervisor_mode_ = AgentParam::MODE_XEN;
GetOptValue<string>(var_map, xen_ll_.name_,
"HYPERVISOR.xen_ll_interface");
if (var_map.count("HYPERVISOR.xen_ll_ip")) {
string ip = var_map["HYPERVISOR.xen_ll_ip"].as<string>();
ec = Ip4PrefixParse(ip, &xen_ll_.addr_, &xen_ll_.plen_);
if (ec != 0 || xen_ll_.plen_ >= 32) {
cout << "Error in argument <" << config_file_
<< ">. Error parsing Xen Link-local ip-address from <"
<< ip << ">\n";
exit(EINVAL);
}
}
} else if (var_map["HYPERVISOR.type"].as<string>() == "vmware") {
hypervisor_mode_ = AgentParam::MODE_VMWARE;
GetOptValue<string>(var_map, vmware_physical_port_,
"HYPERVISOR.vmware_physical_interface");
} else {
hypervisor_mode_ = AgentParam::MODE_KVM;
}
}
if (var_map.count("HYPERVISOR.vmware_mode") &&
!var_map["HYPERVISOR.vmware_mode"].defaulted()) {
cout << " vmware_mode is " << var_map["HYPERVISOR.vmware_mode"].as<string>() << endl;
if (var_map["HYPERVISOR.vmware_mode"].as<string>() == "vcenter") {
vmware_mode_ = VCENTER;
} else if (var_map["HYPERVISOR.vmware_mode"].as<string>() ==
"esxi_neutron") {
vmware_mode_ = ESXI_NEUTRON;
} else {
cout << "Error in parsing arguement for HYPERVISOR.vmware_mode <"
<< var_map["HYPERVISOR.vmware_mode"].as<string>() << endl;
return;
}
}
}
void AgentParam::ParseDefaultSectionArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<uint16_t>(var_map, flow_cache_timeout_,
"DEFAULT.flow_cache_timeout");
GetOptValue<string>(var_map, host_name_, "DEFAULT.hostname");
GetOptValue<string>(var_map, agent_name_, "DEFAULT.agent_name");
GetOptValue<uint16_t>(var_map, http_server_port_,
"DEFAULT.http_server_port");
GetOptValue<string>(var_map, log_category_, "DEFAULT.log_category");
GetOptValue<string>(var_map, log_file_, "DEFAULT.log_file");
GetValueFromTree<int>(log_files_count_, "DEFAULT.log_files_count");
GetValueFromTree<long>(log_file_size_, "DEFAULT.log_file_size");
GetOptValue<string>(var_map, log_level_, "DEFAULT.log_level");
GetOptValue<string>(var_map, syslog_facility_, "DEFAULT.syslog_facility");
if (var_map.count("DEFAULT.use_syslog")) {
use_syslog_ = true;
}
if (var_map.count("DEFAULT.log_local")) {
log_local_ = true;
}
if (var_map.count("DEFAULT.debug")) {
debug_ = true;
}
if (var_map.count("DEFAULT.log_flow")) {
log_flow_ = true;
}
GetOptValue<bool>(var_map, disable_flow_collection_, "DEFAULT.disable_flow_collection");
GetOptValue<bool>(var_map, xmpp_auth_enable_, "DEFAULT.xmpp_auth_enable");
GetOptValue<string>(var_map, xmpp_server_cert_, "DEFAULT.xmpp_server_cert");
GetValueFromTree<int>(tcp_hold_time_, "DEFAULT.tcp_hold_time");
GetOptValue<uint32_t>(var_map, send_ratelimit_,
"DEFAULT.sandesh_send_rate_limit");
}
void AgentParam::ParseTaskSectionArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<uint32_t>(var_map, tbb_exec_delay_,
"TASK.log_exec_threshold");
GetOptValue<uint32_t>(var_map, tbb_schedule_delay_,
"TASK.log_schedule_threshold");
GetOptValue<uint32_t>(var_map, tbb_keepawake_timeout_,
"TASK.tbb_keepawake_timeout");
}
void AgentParam::ParseMetadataProxyArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<string>(var_map, metadata_shared_secret_,
"METADATA.metadata_proxy_secret");
}
void AgentParam::ParseFlowArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<float>(var_map, max_vm_flows_, "FLOWS.max_vm_flows");
GetOptValue<uint16_t>(var_map, linklocal_system_flows_,
"FLOWS.max_system_linklocal_flows");
GetOptValue<uint16_t>(var_map, linklocal_vm_flows_,
"FLOWS.max_vm_linklocal_flows");
}
void AgentParam::ParseHeadlessModeArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<bool>(var_map, headless_mode_, "DEFAULT.headless_mode");
}
void AgentParam::ParseDhcpRelayModeArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<bool>(var_map, dhcp_relay_mode_, "DEFAULT.dhcp_relay_mode");
}
void AgentParam::ParseAgentInfoArguments
(const boost::program_options::variables_map &var_map) {
std::string mode;
if (GetOptValue<string>(var_map, mode, "DEFAULT.agent_mode")) {
set_agent_mode(mode);
}
GetOptValue<string>(var_map, agent_base_dir_,
"DEFAULT.agent_base_directory");
}
void AgentParam::ParseServiceInstanceArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<string>(var_map, si_netns_command_, "SERVICE-INSTANCE.netns_command");
GetOptValue<string>(var_map, si_docker_command_, "SERVICE-INSTANCE.docker_command");
GetOptValue<int>(var_map, si_netns_workers_, "SERVICE-INSTANCE.netns_workers");
GetOptValue<int>(var_map, si_netns_timeout_, "SERVICE-INSTANCE.netns_timeout");
GetOptValue<string>(var_map, si_haproxy_ssl_cert_path_,
"SERVICE-INSTANCE.haproxy_ssl_cert_path");
}
void AgentParam::ParseNexthopServerArguments
(const boost::program_options::variables_map &var_map) {
GetOptValue<string>(var_map, nexthop_server_endpoint_,
"NEXTHOP-SERVER.endpoint");
GetOptValue<bool>(var_map, nexthop_server_add_pid_,
"NEXTHOP-SERVER.add_pid");
if (nexthop_server_add_pid_) {
std::stringstream ss;
ss << nexthop_server_endpoint_ << "." << getpid();
nexthop_server_endpoint_ = ss.str();
}
}
void AgentParam::ParsePlatformArguments
(const boost::program_options::variables_map &var_map) {
boost::system::error_code ec;
if (var_map.count("DEFAULT.platform") &&
!var_map["DEFAULT.platform"].defaulted()) {
if (var_map["DEFAULT.platform"].as<string>() == "nic") {
platform_ = AgentParam::VROUTER_ON_NIC;
} else if (var_map["DEFAULT.platform"].as<string>() == "dpdk") {
platform_ = AgentParam::VROUTER_ON_HOST_DPDK;
if (var_map.count("DEFAULT.physical_interface_address")) {
physical_interface_pci_addr_ =
var_map["DEFAULT.physical_interface_address"].as<string>();
physical_interface_mac_addr_ =
var_map["DEFAULT.physical_interface_mac"].as<string>();
}
} else {
platform_ = AgentParam::VROUTER_ON_HOST;
}
}
}
// Initialize hypervisor mode based on system information
// If "/proc/xen" exists it means we are running in Xen dom0
void AgentParam::InitFromSystem() {
boost::system::error_code error;
host_name_ = boost::asio::ip::host_name(error);
agent_name_ = host_name_;
struct stat fstat;
if (stat("/proc/xen", &fstat) == 0) {
hypervisor_mode_ = MODE_XEN;
cout << "Found file /proc/xen. Initializing mode to XEN\n";
}
xen_ll_.addr_ = Ip4Address::from_string("169.254.0.1");
xen_ll_.plen_ = 16;
return;
}
// Update agent parameters from config file
void AgentParam::InitFromConfig() {
// Read and parse INI
try {
read_ini(config_file_, tree_);
} catch (exception &e) {
cout << "Error reading config file <" << config_file_
<< ">. INI format error??? <" << e.what() << ">\n";
return;
}
ParseCollector();
ParseVirtualHost();
ParseServerList("CONTROL-NODE.server", &xmpp_server_1_, &xmpp_server_2_);
ParseServerList("DNS.server", &dns_server_1_, &dns_port_1_,
&dns_server_2_, &dns_port_2_);
ParseDiscovery();
ParseNetworks();
ParseHypervisor();
ParseDefaultSection();
ParseTaskSection();
ParseMetadataProxy();
ParseFlows();
ParseHeadlessMode();
ParseDhcpRelayMode();
ParseSimulateEvpnTor();
ParseServiceInstance();
ParseAgentInfo();
ParseNexthopServer();
ParsePlatform();
cout << "Config file <" << config_file_ << "> parsing completed.\n";
return;
}
void AgentParam::InitFromArguments() {
ParseCollectorArguments(var_map_);
ParseVirtualHostArguments(var_map_);
ParseServerListArguments(var_map_, xmpp_server_1_, xmpp_server_2_,
"CONTROL-NODE.server");
ParseServerListArguments(var_map_, &dns_server_1_, &dns_port_1_,
&dns_server_2_, &dns_port_2_, "DNS.server");
ParseDiscoveryArguments(var_map_);
ParseNetworksArguments(var_map_);
ParseHypervisorArguments(var_map_);
ParseDefaultSectionArguments(var_map_);
ParseTaskSectionArguments(var_map_);
ParseMetadataProxyArguments(var_map_);
ParseHeadlessModeArguments(var_map_);
ParseDhcpRelayModeArguments(var_map_);
ParseServiceInstanceArguments(var_map_);
ParseAgentInfoArguments(var_map_);
ParseNexthopServerArguments(var_map_);
ParsePlatformArguments(var_map_);
return;
}
// Update max_vm_flows_ if it is greater than 100.
// Update linklocal max flows if they are greater than the max allowed for the
// process. Also, ensure that the process is allowed to open upto
// linklocal_system_flows + kMaxOtherOpenFds files
void AgentParam::ComputeFlowLimits() {
if (max_vm_flows_ > 100) {
cout << "Updating flows configuration max-vm-flows to : 100%\n";
max_vm_flows_ = 100;
}
if (max_vm_flows_ < 0) {
cout << "Updating flows configuration max-vm-flows to : 0%\n";
max_vm_flows_ = 0;
}
struct rlimit rl;
int result = getrlimit(RLIMIT_NOFILE, &rl);
if (result == 0) {
if (rl.rlim_max <= Agent::kMaxOtherOpenFds + 1) {
cout << "Updating linklocal flows configuration to 0\n";
linklocal_system_flows_ = linklocal_vm_flows_ = 0;
return;
}
if (linklocal_system_flows_ > rl.rlim_max - Agent::kMaxOtherOpenFds - 1) {
linklocal_system_flows_ = rl.rlim_max - Agent::kMaxOtherOpenFds - 1;
cout << "Updating linklocal-system-flows configuration to : " <<
linklocal_system_flows_ << "\n";
}
if (rl.rlim_cur < linklocal_system_flows_ + Agent::kMaxOtherOpenFds + 1) {
struct rlimit new_rl;
new_rl.rlim_max = rl.rlim_max;
new_rl.rlim_cur = linklocal_system_flows_ + Agent::kMaxOtherOpenFds + 1;
result = setrlimit(RLIMIT_NOFILE, &new_rl);
if (result != 0) {
if (rl.rlim_cur <= Agent::kMaxOtherOpenFds + 1) {
linklocal_system_flows_ = 0;
} else {
linklocal_system_flows_ = rl.rlim_cur - Agent::kMaxOtherOpenFds - 1;
}
cout << "Unable to set Max open files limit to : " <<
new_rl.rlim_cur <<
" Updating linklocal-system-flows configuration to : " <<
linklocal_system_flows_ << "\n";
}
}
if (linklocal_vm_flows_ > linklocal_system_flows_) {
linklocal_vm_flows_ = linklocal_system_flows_;
cout << "Updating linklocal-vm-flows configuration to : " <<
linklocal_vm_flows_ << "\n";
}
} else {
cout << "Unable to validate linklocal flow configuration\n";
}
}
static bool ValidateInterface(bool test_mode, const std::string &ifname,
bool *no_arp, string *eth_encap) {
*no_arp = false;
*eth_encap = "";
if (test_mode) {
return true;
}
int fd = socket(AF_LOCAL, SOCK_STREAM, 0);
assert(fd >= 0);
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, ifname.c_str(), IF_NAMESIZE);
int err = ioctl(fd, SIOCGIFFLAGS, (void *)&ifr);
close (fd);
if (err < 0) {
LOG(ERROR, "Error reading interface <" << ifname << ">. Error number "
<< errno << " : " << strerror(errno));
return false;
}
if ((ifr.ifr_flags & IFF_NOARP)) {
*no_arp = true;
}
char fname[128];
snprintf(fname, 128, "/sys/class/net/%s/type", ifname.c_str());
FILE *f = fopen(fname, "r");
if (f) {
int type;
if (fscanf(f, "%d", &type) >= 0) {
if (type == ARPHRD_NONE) {
*eth_encap = "none";
}
}
}
return true;
}
int AgentParam::Validate() {
// TODO: fix the validation for the DPDK platform
if (platform_ == AgentParam::VROUTER_ON_HOST_DPDK)
return 0;
// Validate vhost interface name
if (vhost_.name_ == "") {
LOG(ERROR, "Configuration error. vhost interface name not specified");
return (EINVAL);
}
bool no_arp;
string encap;
// Check if interface is already present
if (ValidateInterface(test_mode_, vhost_.name_, &no_arp, &encap) == false) {
return (ENODEV);
}
// Validate ethernet port
if (eth_port_ == "") {
LOG(ERROR, "Configuration error. eth_port not specified");
return (EINVAL);
}
// Check if interface is already present
if (ValidateInterface(test_mode_, eth_port_, ð_port_no_arp_,
ð_port_encap_type_) == false) {
return (ENODEV);
}
// Validate physical port used in vmware
if (hypervisor_mode_ == MODE_VMWARE) {
if (vmware_physical_port_ == "") {
LOG(ERROR, "Configuration error. Physical port connecting to "
"virtual-machines not specified");
return (EINVAL);
}
if (ValidateInterface(test_mode_, vmware_physical_port_, &no_arp,
&encap) == false) {
return (ENODEV);
}
}
return 0;
}
void AgentParam::InitVhostAndXenLLPrefix() {
// Set the prefix address for VHOST and XENLL interfaces
uint32_t mask = vhost_.plen_ ? (0xFFFFFFFF << (32 - vhost_.plen_)) : 0;
vhost_.prefix_ = Ip4Address(vhost_.addr_.to_ulong() & mask);
mask = xen_ll_.plen_ ? (0xFFFFFFFF << (32 - xen_ll_.plen_)) : 0;
xen_ll_.prefix_ = Ip4Address(xen_ll_.addr_.to_ulong() & mask);
}
void AgentParam::InitPlatform() {
Ip4Address ip = Ip4Address::from_string("127.0.0.1");
if (platform_ == VROUTER_ON_NIC) {
agent_->set_vrouter_server_ip(ip);
agent_->set_vrouter_server_port(VROUTER_SERVER_PORT);