netns_instance_adapter.cc

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#include <fstream>
#include <boost/filesystem.hpp>
#include "oper/netns_instance_adapter.h"
#include "oper/service_instance.h"
#include "oper/instance_task.h"
#include "agent.h"
#include "init/agent_param.h"

InstanceTask* NetNSInstanceAdapter::CreateStartTask(const ServiceInstance::Properties &props, bool update) {
    std::stringstream cmd_str;

    if (netns_cmd_.length() == 0) {
        return NULL;
    }
    cmd_str << netns_cmd_ << " create";

    cmd_str << " " << props.ServiceTypeString();
    cmd_str << " " << UuidToString(props.instance_id);
    cmd_str << " " << UuidToString(props.vmi_inside);
    cmd_str << " " << UuidToString(props.vmi_outside);

    if (props.ip_prefix_len_inside != -1)  {
        cmd_str << " --vmi-left-ip " << props.ip_addr_inside << "/";
        cmd_str << props.ip_prefix_len_inside;
    } else {
        cmd_str << " --vmi-left-ip 0.0.0.0/0";
    }
    cmd_str << " --vmi-right-ip " << props.ip_addr_outside << "/";
    cmd_str << props.ip_prefix_len_outside;

    if (!props.mac_addr_inside.empty()) {
        cmd_str << " --vmi-left-mac " << props.mac_addr_inside;
    } else {
        cmd_str << " --vmi-left-mac 00:00:00:00:00:00";
    }
    cmd_str << " --vmi-right-mac " << props.mac_addr_outside;
    cmd_str << " --gw-ip " << props.gw_ip;

    if (props.service_type == ServiceInstance::LoadBalancer) {
        if (props.loadbalancer_id.empty()) {
            LOG(ERROR, "loadbalancer id is missing for service instance: "
                        << UuidToString(props.instance_id));
            return NULL;
        }
        cmd_str << " --loadbalancer-id " << props.loadbalancer_id;
        std::stringstream pathgen;
        pathgen << loadbalancer_config_path_
                << props.loadbalancer_id << ".conf";
        const std::string &filename = pathgen.str();
        std::ofstream fs(filename.c_str());
        if (fs.fail()) {
            LOG(ERROR, "File create " << filename << ": " << strerror(errno));
            return NULL;
        }
        const std::vector<autogen::KeyValuePair> &kvps  = props.instance_kvps;
        bool kvp_found = false;
        std::vector<autogen::KeyValuePair>::const_iterator iter;
        autogen::KeyValuePair kvp;
        for (iter = kvps.begin(); iter != kvps.end(); ++iter) {
            kvp = *iter;
            /* :::: - Key Value Seperator
               ::::: - Key Value Pair Seperator */
            if (kvp_found == true)
                fs << ":::::";
            fs << kvp.key << "::::" << kvp.value;
            kvp_found = true;
        }
        if (!agent_->params()->si_lb_ssl_cert_path().empty()) {
            fs << ":::::" << "lb_ssl_cert_path";
            fs << "::::" << agent_->params()->si_lb_ssl_cert_path();
        }
        if (!agent_->params()->si_lbaas_auth_conf().empty()) {
            fs << ":::::" << "lbaas_auth_conf";
            fs << "::::" << agent_->params()->si_lbaas_auth_conf();
        }
        fs.close();
        if (kvp_found == false) {
            LOG(ERROR, "KeyValuePair is missing for loadbalancer: "
                        << props.loadbalancer_id);
            return NULL;
        }
        cmd_str << " --cfg-file " << pathgen.str();
    }

    if (update) {
        cmd_str << " --update";
    }
    LOG(INFO, "Command to be executed: " + cmd_str.str());
    return new InstanceTaskExecvp("NetNS", cmd_str.str(), START,
                                  agent_->event_manager());
}

InstanceTask* NetNSInstanceAdapter::CreateStopTask(const ServiceInstance::Properties &props) {
    std::stringstream cmd_str;

    if (netns_cmd_.length() == 0) {
        return NULL;
    }
    cmd_str << netns_cmd_ << " destroy";

    if (props.instance_id.is_nil() ||
        props.vmi_outside.is_nil()) {
        return NULL;
    }

    if (props.interface_count == 2 && props.vmi_inside.is_nil()) {
        return NULL;
    }

    cmd_str << " " << props.ServiceTypeString();
    cmd_str << " " << UuidToString(props.instance_id);
    cmd_str << " " << UuidToString(props.vmi_inside);
    cmd_str << " " << UuidToString(props.vmi_outside);
    if (props.service_type == ServiceInstance::LoadBalancer) {
        if (props.loadbalancer_id.empty()) {
            LOG(ERROR, "loadbalancer id is missing for service instance: "
                        << UuidToString(props.instance_id));
            return NULL;
        }
        cmd_str << " --loadbalancer-id " << props.loadbalancer_id;
    }
    LOG(INFO, "Preparing to destroy with command: " + cmd_str.str());
    return new InstanceTaskExecvp("NetNS", cmd_str.str(), STOP,
                                  agent_->event_manager());
}

bool NetNSInstanceAdapter::isApplicable(const ServiceInstance::Properties &props) {
    return (props.virtualization_type == ServiceInstance::NetworkNamespace);
}