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/*
* Copyright (c) 2018 PANTHEON.tech.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <assert.h>
#include <string.h>
#include <vom/interface.hpp>
#include <vom/om.hpp>
#include <vpp-oper/interface.hpp>
#include <sc_plugins.h>
using VOM::interface;
using VOM::OM;
using VOM::HW;
using VOM::rc_t;
using type_t = VOM::interface::type_t;
using admin_state_t = VOM::interface::admin_state_t;
class interface_builder {
public:
interface_builder() {}
shared_ptr<VOM::interface> build() {
if (m_name.empty() || m_type.empty())
return nullptr;
return make_shared<interface>(m_name, type_t::from_string(m_type),
admin_state_t::from_int(m_state));
}
/* Getters */
string name() {
return m_name;
}
/* Setters */
interface_builder& set_name(string n) {
m_name = n;
return *this;
}
interface_builder& set_type(string t) {
if (t == "iana-if-type:ethernetCsmacd")
m_type = "ETHERNET";
return *this;
}
interface_builder& set_state(bool enable) {
m_state = enable;
return *this;
}
std::string to_string() {
std::ostringstream os;
os << m_name << "," << m_type << "," << m_state;
return os.str();
}
private:
string m_name;
string m_type;
bool m_state;
};
// XPATH: /openconfig-interfaces:interfaces/interface[name='%s']/config/
static int
oc_interfaces_config_cb(sr_session_ctx_t *ds, const char *xpath,
sr_notif_event_t event, void *private_ctx)
{
UNUSED(private_ctx);
interface_builder builder;
shared_ptr<VOM::interface> intf;
string intf_name;
sr_change_iter_t *it = nullptr;
sr_xpath_ctx_t state;
sr_val_t *ol = nullptr;
sr_val_t *ne = nullptr;
sr_change_oper_t oper;
bool create, remove, modify;
int rc;
SRP_LOG_INF("In %s", __FUNCTION__);
ARG_CHECK2(SR_ERR_INVAL_ARG, ds, xpath);
if (event != SR_EV_VERIFY)
return SR_ERR_OK;
if (sr_get_changes_iter(ds, (char *)xpath, &it) != SR_ERR_OK) {
sr_free_change_iter(it);
return SR_ERR_OK;
}
foreach_change (ds, it, oper, ol, ne) {
intf_name = sr_xpath_key_value(ne->xpath, "interface", "name", &state);
if (intf_name.empty()) {
sr_set_error(ds, "XPATH interface name NOT found", ne->xpath);
return SR_ERR_INVAL_ARG;
}
sr_xpath_recover(&state);
switch (oper) {
case SR_OP_CREATED:
if (sr_xpath_node_name_eq(ne->xpath, "name")) {
builder.set_name(ne->data.string_val);
create = true;
} else if(sr_xpath_node_name_eq(ne->xpath, "type")) {
builder.set_type(ne->data.string_val);
} else if(sr_xpath_node_name_eq(ne->xpath, "enabled")) {
builder.set_state(ne->data.bool_val);
}
break;
case SR_OP_MODIFIED:
if (sr_xpath_node_name_eq(ne->xpath, "enabled")) {
string n = sr_xpath_key_value(ne->xpath, "interface",
"name", &state);
intf = interface::find(n);
if (!intf) {
rc = SR_ERR_OPERATION_FAILED;
goto nothing_todo;
}
intf->set(admin_state_t::from_int(ne->data.bool_val));
modify = true;
}
break;
case SR_OP_DELETED:
if (sr_xpath_node_name_eq(ol->xpath, "name")) {
builder.set_name(ol->data.string_val);
remove = true;
}
break;
default:
rc = SR_ERR_UNSUPPORTED;
goto nothing_todo;
}
sr_xpath_recover(&state);
sr_free_val(ol);
sr_free_val(ne);
}
if (create) {
SRP_LOG_INF("creating interface '%s'", builder.name().c_str());
intf = builder.build();
if (nullptr == intf) {
SRP_LOG_ERR_MSG("Interface does not exist");
rc = SR_ERR_INVAL_ARG;
goto nothing_todo;
}
}
if (create || modify) {
if ( OM::write(intf->key(), *intf) != rc_t::OK ) {
SRP_LOG_ERR("Fail writing changes to VPP for: %s",
builder.to_string().c_str());
rc = SR_ERR_OPERATION_FAILED;
goto nothing_todo;
}
} else if (remove) {
SRP_LOG_INF("deleting interface '%s'", builder.name().c_str());
OM::remove(builder.name());
}
sr_free_change_iter(it);
return SR_ERR_OK;
nothing_todo:
sr_free_val(ol);
sr_free_val(ne);
sr_free_change_iter(it);
return rc;
}
//XPATH : /openconfig-interfaces:interfaces/interface/state
static int
oc_interfaces_state_cb(const char *xpath, sr_val_t **values, size_t *values_cnt,
uint64_t request_id, const char *original_xpath,
void *private_ctx)
{
UNUSED(request_id); UNUSED(original_xpath); UNUSED(private_ctx);
vapi_payload_sw_interface_details reply;
shared_ptr<interface_dump> dump;
string intf_name;
sr_val_t *vals = nullptr;
sr_xpath_ctx_t state;
char xpath_root[XPATH_SIZE];
int vc = 7;
int cnt = 0;
int rc;
SRP_LOG_INF("In %s", __FUNCTION__);
ARG_CHECK3(SR_ERR_INVAL_ARG, xpath, values, values_cnt);
intf_name = sr_xpath_key_value((char*) xpath, "interface", "name", &state);
if (intf_name.empty()) {
SRP_LOG_ERR_MSG("XPATH interface name not found");
return SR_ERR_INVAL_ARG;
}
sr_xpath_recover(&state);
snprintf(xpath_root, XPATH_SIZE,
"/openconfig-interfaces:interfaces/interface[name='%s']/state",
intf_name.c_str());
rc = sr_new_values(vc, &vals);
if (SR_ERR_OK != rc)
return rc;
dump = make_shared<interface_dump>(intf_name); //dump only specific intf
HW::enqueue(dump);
HW::write();
reply = dump->begin()->get_payload();
sr_val_build_xpath(&vals[cnt], "%s/name", xpath_root);
sr_val_set_str_data(&vals[cnt], SR_STRING_T, (char *)reply.interface_name.buf);
cnt++;
//TODO revisit types after V3PO has been implemented
sr_val_build_xpath(&vals[cnt], "%s/type", xpath_root);
sr_val_set_str_data(&vals[cnt], SR_IDENTITYREF_T, "ianaift:ethernetCsmacd");
cnt++;
sr_val_build_xpath(&vals[cnt], "%s/mtu", xpath_root);
vals[cnt].type = SR_UINT16_T;
vals[cnt].data.uint16_val = reply.link_mtu;
cnt++;
sr_val_build_xpath(&vals[cnt], "%s/enabled", xpath_root);
vals[cnt].type = SR_BOOL_T;
vals[cnt].data.bool_val = reply.flags;
cnt++;
sr_val_build_xpath(&vals[cnt], "%s/ifindex", xpath_root);
vals[cnt].type = SR_UINT32_T;
vals[cnt].data.uint32_val = reply.sw_if_index;
cnt++;
sr_val_build_xpath(&vals[cnt], "%s/admin-status", xpath_root);
sr_val_set_str_data(&vals[cnt], SR_ENUM_T,
reply.flags ? "UP" : "DOWN");
cnt++;
sr_val_build_xpath(&vals[cnt], "%s/oper-status", xpath_root);
sr_val_set_str_data(&vals[cnt], SR_ENUM_T,
reply.link_duplex ? "UP" : "DOWN");
cnt++;
*values = vals;
*values_cnt = cnt;
return SR_ERR_OK;
}
int
openconfig_interface_init(sc_plugin_main_t *pm)
{
int rc = SR_ERR_OK;
SRP_LOG_DBG_MSG("Initializing openconfig-interfaces plugin.");
rc = sr_subtree_change_subscribe(pm->session, "/openconfig-interfaces:interfaces/interface/config",
oc_interfaces_config_cb, nullptr, 98, SR_SUBSCR_CTX_REUSE, &pm->subscription);
if (SR_ERR_OK != rc) {
goto error;
}
rc = sr_dp_get_items_subscribe(pm->session, "/openconfig-interfaces:interfaces/interface/state",
oc_interfaces_state_cb, nullptr, SR_SUBSCR_CTX_REUSE, &pm->subscription);
if (SR_ERR_OK != rc) {
goto error;
}
SRP_LOG_DBG_MSG("openconfig-interfaces plugin initialized successfully.");
return SR_ERR_OK;
error:
SRP_LOG_ERR("Error by initialization of openconfig-interfaces plugin. Error : %d", rc);
return rc;
}
void
openconfig_interface_exit(__attribute__((unused)) sc_plugin_main_t *pm)
{
}
SC_INIT_FUNCTION(openconfig_interface_init);
SC_EXIT_FUNCTION(openconfig_interface_exit);
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