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ifmap_server_show.cc
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ifmap_server_show.cc
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/*
* Copyright (c) 2013 Juniper Networks, Inc. All rights reserved.
*/
#include <sandesh/sandesh_types.h>
#include <sandesh/sandesh.h>
#include <sandesh/request_pipeline.h>
#include <boost/bind.hpp>
#include <boost/assign/list_of.hpp>
#include "base/logging.h"
#include "db/db.h"
#include "db/db_graph.h"
#include "db/db_graph_vertex.h"
#include "db/db_table_partition.h"
#include "base/bitset.h"
#include "ifmap/ifmap_exporter.h"
#include "ifmap/ifmap_link.h"
#include "ifmap/ifmap_link_table.h"
#include "ifmap/ifmap_log.h"
#include "ifmap/ifmap_node.h"
#include "ifmap/ifmap_object.h"
#include "ifmap/ifmap_origin.h"
#include "ifmap/ifmap_sandesh_context.h"
#include "ifmap/ifmap_server.h"
#include "ifmap/ifmap_server_show_types.h"
#include "ifmap/ifmap_log_types.h"
#include "ifmap/ifmap_table.h"
#include "ifmap/ifmap_update.h"
#include "ifmap/ifmap_uuid_mapper.h"
#include <pugixml/pugixml.hpp>
using namespace boost::assign;
using namespace std;
using namespace pugi;
class IFMapNodeCopier {
public:
IFMapNodeCopier(IFMapNodeShowInfo *dest, DBEntryBase *src,
IFMapServer *server) {
// Get the name of the node
IFMapNode *src_node = static_cast<IFMapNode *>(src);
dest->node_name = src_node->ToString();
IFMapNodeState *state = server->exporter()->NodeStateLookup(src_node);
if (state) {
// Get the interests and advertised from state
dest->interests = state->interest().ToNumberedString();
dest->advertised = state->advertised().ToNumberedString();
} else {
dest->dbentryflags.append("No state, ");
}
if (src_node->IsDeleted()) {
dest->dbentryflags.append("Deleted, ");
}
if (src_node->is_onlist()) {
dest->dbentryflags.append("OnList, ");
}
if (src_node->IsOnRemoveQ()) {
dest->dbentryflags.append("OnRemoveQ");
}
dest->obj_info.reserve(src_node->list_.size());
for (IFMapNode::ObjectList::const_iterator iter =
src_node->list_.begin(); iter != src_node->list_.end(); ++iter) {
const IFMapObject *src_obj = iter.operator->();
IFMapObjectShowInfo dest_obj;
dest_obj.sequence_number = src_obj->sequence_number();
dest_obj.origin = src_obj->origin().ToString();
dest_obj.data = GetIFMapObjectData(src_obj);
dest->obj_info.push_back(dest_obj);
}
if (src_node->IsVertexValid()) {
DBGraph *graph = server->graph();
int neighbor_count = 0;
for (DBGraphVertex::adjacency_iterator iter =
src_node->begin(graph); iter != src_node->end(graph); ++iter) {
++neighbor_count;
}
dest->neighbors.reserve(neighbor_count);
for (DBGraphVertex::adjacency_iterator iter =
src_node->begin(graph); iter != src_node->end(graph); ++iter) {
IFMapNode *adj = static_cast<IFMapNode *>(iter.operator->());
dest->neighbors.push_back(adj->ToString());
}
}
dest->last_modified = src_node->last_change_at_str();
}
string GetIFMapObjectData(const IFMapObject *src_obj) {
pugi::xml_document xdoc;
pugi::xml_node xnode = xdoc.append_child("iq");
src_obj->EncodeUpdate(&xnode);
ostringstream oss;
xnode.print(oss);
string objdata = oss.str();
return objdata;
}
};
// almost everything in this class is static since we dont really want to
// intantiate this class
class ShowIFMapTable {
public:
static const int kMaxElementsPerRound = 50;
struct ShowData : public RequestPipeline::InstData {
vector<IFMapNodeShowInfo> send_buffer;
};
static RequestPipeline::InstData *AllocBuffer(int stage) {
return static_cast<RequestPipeline::InstData *>(new ShowData);
}
struct TrackerData : public RequestPipeline::InstData {
// init as 1 indicates we need to init 'first' to begin() since there is
// no way to initialize an iterator here.
TrackerData() : init(1) { }
int init;
vector<IFMapNodeShowInfo>::const_iterator first;
};
static RequestPipeline::InstData *AllocTracker(int stage) {
return static_cast<RequestPipeline::InstData *>(new TrackerData);
}
static bool BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage,
int instNum, RequestPipeline::InstData *data);
static bool SendStage(const Sandesh *sr, const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data);
static void TableToBuffer(const IFMapTableShowReq *request, IFMapTable *table,
ShowData *show_data, IFMapServer *server);
static bool BufferAllTables(const RequestPipeline::PipeSpec ps,
RequestPipeline::InstData *data);
static bool BufferSomeTables(const RequestPipeline::PipeSpec ps,
RequestPipeline::InstData *data);
};
void ShowIFMapTable::TableToBuffer(const IFMapTableShowReq *request,
IFMapTable *table, ShowData *show_data, IFMapServer *server) {
string search_string = request->get_search_string();
for (int i = 0; i < IFMapTable::kPartitionCount; i++) {
DBTablePartBase *partition = table->GetTablePartition(i);
DBEntryBase *src = partition->GetFirst();
while (src) {
IFMapNode *src_node = static_cast<IFMapNode *>(src);
if (!search_string.empty() &&
(src_node->ToString().find(search_string) == string::npos)) {
src = partition->GetNext(src);
continue;
}
IFMapNodeShowInfo dest;
IFMapNodeCopier copyNode(&dest, src, server);
show_data->send_buffer.push_back(dest);
src = partition->GetNext(src);
}
}
}
bool ShowIFMapTable::BufferSomeTables(const RequestPipeline::PipeSpec ps,
RequestPipeline::InstData *data) {
const IFMapTableShowReq *request =
static_cast<const IFMapTableShowReq *>(ps.snhRequest_.get());
IFMapSandeshContext *sctx =
static_cast<IFMapSandeshContext *>(request->module_context("IFMap"));
IFMapTable *table = IFMapTable::FindTable(sctx->ifmap_server()->database(),
request->get_table_name());
if (table) {
ShowData *show_data = static_cast<ShowData *>(data);
show_data->send_buffer.reserve(table->Size());
TableToBuffer(request, table, show_data, sctx->ifmap_server());
} else {
IFMAP_WARN(IFMapTblNotFound, "Cant show/find table ",
request->get_table_name());
}
return true;
}
bool ShowIFMapTable::BufferAllTables(const RequestPipeline::PipeSpec ps,
RequestPipeline::InstData *data) {
const IFMapTableShowReq *request =
static_cast<const IFMapTableShowReq *>(ps.snhRequest_.get());
IFMapSandeshContext *sctx =
static_cast<IFMapSandeshContext *>(request->module_context("IFMap"));
DB *db = sctx->ifmap_server()->database();
// Get the sum total of entries in all the tables
int num_entries = 0;
for (DB::iterator iter = db->lower_bound("__ifmap__.");
iter != db->end(); ++iter) {
if (iter->first.find("__ifmap__.") != 0) {
break;
}
IFMapTable *table = static_cast<IFMapTable *>(iter->second);
num_entries += table->Size();
}
ShowData *show_data = static_cast<ShowData *>(data);
show_data->send_buffer.reserve(num_entries);
for (DB::iterator iter = db->lower_bound("__ifmap__.");
iter != db->end(); ++iter) {
if (iter->first.find("__ifmap__.") != 0) {
break;
}
IFMapTable *table = static_cast<IFMapTable *>(iter->second);
TableToBuffer(request, table, show_data, sctx->ifmap_server());
}
return true;
}
bool ShowIFMapTable::BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const IFMapTableShowReq *request =
static_cast<const IFMapTableShowReq *>(ps.snhRequest_.get());
// If table name has not been passed, print all tables
if (request->get_table_name().length()) {
return BufferSomeTables(ps, data);
} else {
return BufferAllTables(ps, data);
}
}
// Can be called multiple times i.e. approx total/kMaxElementsPerRound
bool ShowIFMapTable::SendStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const RequestPipeline::StageData *prev_stage_data = ps.GetStageData(0);
const ShowIFMapTable::ShowData &show_data =
static_cast<const ShowIFMapTable::ShowData &> (prev_stage_data->at(0));
// Data for this stage
TrackerData *tracker_data = static_cast<TrackerData *>(data);
vector<IFMapNodeShowInfo> dest_buffer;
vector<IFMapNodeShowInfo>::const_iterator first, last;
bool more = false;
if (tracker_data->init) {
first = show_data.send_buffer.begin();
tracker_data->init = 0;
} else {
first = tracker_data->first;
}
int rem_num = show_data.send_buffer.end() - first;
int send_num = (rem_num < kMaxElementsPerRound) ? rem_num :
kMaxElementsPerRound;
last = first + send_num;
copy(first, last, back_inserter(dest_buffer));
// Decide if we want to be called again.
if ((rem_num - send_num) > 0) {
more = true;
} else {
more = false;
}
const IFMapTableShowReq *request =
static_cast<const IFMapTableShowReq *>(ps.snhRequest_.get());
IFMapTableShowResp *response = new IFMapTableShowResp();
response->set_ifmap_db(dest_buffer);
response->set_context(request->context());
response->set_more(more);
response->Response();
tracker_data->first = first + send_num;
// Return 'false' to be called again
return (!more);
}
void IFMapTableShowReq::HandleRequest() const {
RequestPipeline::StageSpec s0, s1;
TaskScheduler *scheduler = TaskScheduler::GetInstance();
// 2 stages - first: gather/read, second: send
s0.taskId_ = scheduler->GetTaskId("db::DBTable");
s0.allocFn_ = ShowIFMapTable::AllocBuffer;
s0.cbFn_ = ShowIFMapTable::BufferStage;
s0.instances_.push_back(0);
// control-node ifmap show command task
s1.taskId_ = scheduler->GetTaskId("cn_ifmap::ShowCommand");
s1.allocFn_ = ShowIFMapTable::AllocTracker;
s1.cbFn_ = ShowIFMapTable::SendStage;
s1.instances_.push_back(0);
RequestPipeline::PipeSpec ps(this);
ps.stages_= list_of(s0)(s1);
RequestPipeline rp(ps);
}
// Code to display link-table entries
class ShowIFMapLinkTable {
public:
static const int kMaxElementsPerRound = 50;
struct ShowData : public RequestPipeline::InstData {
vector<IFMapLinkShowInfo> send_buffer;
};
static RequestPipeline::InstData *AllocBuffer(int stage) {
return static_cast<RequestPipeline::InstData *>(new ShowData);
}
struct TrackerData : public RequestPipeline::InstData {
// init as 1 indicates we need to init 'first' to begin() since there is
// no way to initialize an iterator here.
TrackerData() : init(1) { }
int init;
vector<IFMapLinkShowInfo>::const_iterator first;
};
static RequestPipeline::InstData *AllocTracker(int stage) {
return static_cast<RequestPipeline::InstData *>(new TrackerData);
}
static bool SkipLink(DBEntryBase *src, const string &search_string);
static void CopyNode(IFMapLinkShowInfo *dest, DBEntryBase *src,
IFMapServer *server);
static bool BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage,
int instNum, RequestPipeline::InstData *data);
static bool SendStage(const Sandesh *sr, const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data);
};
bool ShowIFMapLinkTable::SkipLink(DBEntryBase *src, const string &search_string) {
IFMapLink *link = static_cast<IFMapLink *>(src);
IFMapNode *left = link->left();
IFMapNode *right = link->right();
if (search_string.empty()) {
return false;
}
// If we do not find the search string in the names of either of the 2 ends,
// skip the link
if ((!left || (left->ToString().find(search_string) == string::npos)) &&
(!right || (right->ToString().find(search_string) == string::npos))) {
return true;
}
return false;
}
void ShowIFMapLinkTable::CopyNode(IFMapLinkShowInfo *dest, DBEntryBase *src,
IFMapServer *server) {
IFMapLink *src_link = static_cast<IFMapLink *>(src);
dest->metadata = src_link->metadata();
if (src_link->left()) {
dest->left = src_link->left()->ToString();
}
if (src_link->right()) {
dest->right = src_link->right()->ToString();
}
// Get the interests and advertised from state
IFMapLinkState *state = server->exporter()->LinkStateLookup(src_link);
if (state) {
dest->interests = state->interest().ToNumberedString();
dest->advertised = state->advertised().ToNumberedString();
} else {
dest->dbentryflags.append("No state, ");
}
if (src_link->IsDeleted()) {
dest->dbentryflags.append("Deleted, ");
}
if (src_link->is_onlist()) {
dest->dbentryflags.append("OnList");
}
if (src_link->IsOnRemoveQ()) {
dest->dbentryflags.append("OnRemoveQ");
}
dest->last_modified = src_link->last_change_at_str();
for (std::vector<IFMapLink::LinkOriginInfo>::const_iterator iter =
src_link->origin_info_.begin(); iter != src_link->origin_info_.end();
++iter) {
const IFMapLink::LinkOriginInfo *origin_info = iter.operator->();
IFMapLinkOriginShowInfo dest_origin;
dest_origin.sequence_number = origin_info->sequence_number;
dest_origin.origin = origin_info->origin.ToString();
dest->origins.push_back(dest_origin);
}
}
bool ShowIFMapLinkTable::BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const IFMapLinkTableShowReq *request =
static_cast<const IFMapLinkTableShowReq *>(ps.snhRequest_.get());
IFMapSandeshContext *sctx =
static_cast<IFMapSandeshContext *>(request->module_context("IFMap"));
IFMapLinkTable *table = static_cast<IFMapLinkTable *>(
sctx->ifmap_server()->database()->FindTable("__ifmap_metadata__.0"));
if (table) {
ShowData *show_data = static_cast<ShowData *>(data);
show_data->send_buffer.reserve(table->Size());
DBTablePartBase *partition = table->GetTablePartition(0);
DBEntryBase *src = partition->GetFirst();
while (src) {
if (SkipLink(src, request->get_search_string())) {
src = partition->GetNext(src);
continue;
}
IFMapLinkShowInfo dest;
CopyNode(&dest, src, sctx->ifmap_server());
show_data->send_buffer.push_back(dest);
src = partition->GetNext(src);
}
} else {
IFMAP_WARN(IFMapTblNotFound, "Cant show/find ", "link table");
}
return true;
}
// Can be called multiple times i.e. approx total/kMaxElementsPerRound
bool ShowIFMapLinkTable::SendStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const RequestPipeline::StageData *prev_stage_data = ps.GetStageData(0);
const ShowIFMapLinkTable::ShowData &show_data =
static_cast<const ShowIFMapLinkTable::ShowData &>
(prev_stage_data->at(0));
// Data for this stage
TrackerData *tracker_data = static_cast<TrackerData *>(data);
vector<IFMapLinkShowInfo> dest_buffer;
vector<IFMapLinkShowInfo>::const_iterator first, last;
bool more = false;
if (tracker_data->init) {
first = show_data.send_buffer.begin();
tracker_data->init = 0;
} else {
first = tracker_data->first;
}
int rem_num = show_data.send_buffer.end() - first;
int send_num = (rem_num < kMaxElementsPerRound) ? rem_num :
kMaxElementsPerRound;
last = first + send_num;
copy(first, last, back_inserter(dest_buffer));
// Decide if we want to be called again.
if ((rem_num - send_num) > 0) {
more = true;
} else {
more = false;
}
const IFMapLinkTableShowReq *request =
static_cast<const IFMapLinkTableShowReq *>(ps.snhRequest_.get());
IFMapLinkTableShowResp *response = new IFMapLinkTableShowResp();
response->set_ifmap_db(dest_buffer);
response->set_context(request->context());
response->set_more(more);
response->Response();
tracker_data->first = first + send_num;
// Return 'false' to be called again
return (!more);
}
void IFMapLinkTableShowReq::HandleRequest() const {
RequestPipeline::StageSpec s0, s1;
TaskScheduler *scheduler = TaskScheduler::GetInstance();
// 2 stages - first: gather/read, second: send
s0.taskId_ = scheduler->GetTaskId("db::DBTable");
s0.allocFn_ = ShowIFMapLinkTable::AllocBuffer;
s0.cbFn_ = ShowIFMapLinkTable::BufferStage;
s0.instances_.push_back(0);
// control-node ifmap show command task
s1.taskId_ = scheduler->GetTaskId("cn_ifmap::ShowCommand");
s1.allocFn_ = ShowIFMapLinkTable::AllocTracker;
s1.cbFn_ = ShowIFMapLinkTable::SendStage;
s1.instances_.push_back(0);
RequestPipeline::PipeSpec ps(this);
ps.stages_= list_of(s0)(s1);
RequestPipeline rp(ps);
}
static bool IFMapNodeShowReqHandleRequest(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const IFMapNodeShowReq *request =
static_cast<const IFMapNodeShowReq *>(ps.snhRequest_.get());
IFMapSandeshContext *sctx =
static_cast<IFMapSandeshContext *>(request->module_context("IFMap"));
IFMapNodeShowResp *response = new IFMapNodeShowResp();
string fq_node_name = request->get_fq_node_name();
// EG: "virtual-network:my:virtual:network" i.e. type:name
size_t type_length = fq_node_name.find(":");
if (type_length != string::npos) {
string node_type = fq_node_name.substr(0, type_length);
// +1 to go to the next character after ':'
string node_name = fq_node_name.substr(type_length + 1);
DB *db = sctx->ifmap_server()->database();
IFMapTable *table = IFMapTable::FindTable(db, node_type);
if (table) {
IFMapNode *src = table->FindNode(node_name);
if (src) {
IFMapNodeShowInfo dest;
IFMapNodeCopier copyNode(&dest, src, sctx->ifmap_server());
response->set_node_info(dest);
} else {
IFMAP_WARN(IFMapIdentifierNotFound, "Cant find identifier",
node_name);
}
} else {
IFMAP_WARN(IFMapTblNotFound, "Cant show/find table with node-type",
node_type);
}
}
response->set_context(request->context());
response->set_more(false);
response->Response();
// Return 'true' so that we are not called again
return true;
}
void IFMapNodeShowReq::HandleRequest() const {
RequestPipeline::StageSpec s0;
TaskScheduler *scheduler = TaskScheduler::GetInstance();
s0.taskId_ = scheduler->GetTaskId("db::DBTable");
s0.cbFn_ = IFMapNodeShowReqHandleRequest;
s0.instances_.push_back(0);
RequestPipeline::PipeSpec ps(this);
ps.stages_= list_of(s0);
RequestPipeline rp(ps);
}
class ShowIFMapPerClientNodes {
public:
static const int kMaxElementsPerRound = 50;
struct ShowData : public RequestPipeline::InstData {
vector<IFMapPerClientNodesShowInfo> send_buffer;
};
static RequestPipeline::InstData *AllocBuffer(int stage) {
return static_cast<RequestPipeline::InstData *>(new ShowData);
}
struct TrackerData : public RequestPipeline::InstData {
// init as 1 indicates we need to init 'first' to begin() since there
// is no way to initialize an iterator here.
TrackerData() : init(1) { }
int init;
vector<IFMapPerClientNodesShowInfo>::const_iterator first;
};
static RequestPipeline::InstData *AllocTracker(int stage) {
return static_cast<RequestPipeline::InstData *>(new TrackerData);
}
static bool CopyNode(IFMapPerClientNodesShowInfo *dest, IFMapNode *src,
IFMapServer *server, int client_index);
static bool BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage,
int instNum, RequestPipeline::InstData *data);
static bool SendStage(const Sandesh *sr, const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data);
};
bool ShowIFMapPerClientNodes::CopyNode(IFMapPerClientNodesShowInfo *dest,
IFMapNode *src, IFMapServer *server,
int client_index) {
IFMapNodeState *state = server->exporter()->NodeStateLookup(src);
if (state && state->interest().test(client_index)) {
dest->node_name = src->ToString();
if (state->advertised().test(client_index)) {
dest->sent = "Yes";
} else {
dest->sent = "No";
}
return true;
} else {
return false;
}
}
bool ShowIFMapPerClientNodes::BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage,
int instNum, RequestPipeline::InstData *data) {
const IFMapPerClientNodesShowReq *request =
static_cast<const IFMapPerClientNodesShowReq *>(ps.snhRequest_.get());
IFMapSandeshContext *sctx =
static_cast<IFMapSandeshContext *>(request->module_context("IFMap"));
IFMapServer *ifmap_server = sctx->ifmap_server();
string client_index_or_name = request->get_client_index_or_name();
// The user gives us either a name or an index. If the input is not a
// number, find the client's index using its name. If we cant find it,
// we cant process this request. If we have the index, continue processing.
int client_index;
if (!stringToInteger(client_index_or_name, client_index)) {
if (!ifmap_server->ClientNameToIndex(client_index_or_name,
&client_index)) {
return true;
}
}
string search_string = request->get_search_string();
ShowData *show_data = static_cast<ShowData *>(data);
DB *db = ifmap_server->database();
for (DB::iterator iter = db->lower_bound("__ifmap__.");
iter != db->end(); ++iter) {
if (iter->first.find("__ifmap__.") != 0) {
break;
}
IFMapTable *table = static_cast<IFMapTable *>(iter->second);
for (int i = 0; i < IFMapTable::kPartitionCount; ++i) {
DBTablePartBase *partition = table->GetTablePartition(i);
DBEntryBase *src = partition->GetFirst();
while (src) {
IFMapNode *src_node = static_cast<IFMapNode *>(src);
src = partition->GetNext(src);
// If the search string is not part of the node's name, skip it.
if (!search_string.empty() &&
(src_node->ToString().find(search_string) == string::npos)) {
continue;
}
IFMapPerClientNodesShowInfo dest;
bool send = CopyNode(&dest, src_node, ifmap_server,
client_index);
if (send) {
show_data->send_buffer.push_back(dest);
}
}
}
}
return true;
}
// Can be called multiple times i.e. approx total/kMaxElementsPerRound
bool ShowIFMapPerClientNodes::SendStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const RequestPipeline::StageData *prev_stage_data = ps.GetStageData(0);
const ShowIFMapPerClientNodes::ShowData &show_data =
static_cast<const ShowIFMapPerClientNodes::ShowData &>
(prev_stage_data->at(0));
// Data for this stage
TrackerData *tracker_data = static_cast<TrackerData *>(data);
vector<IFMapPerClientNodesShowInfo> dest_buffer;
vector<IFMapPerClientNodesShowInfo>::const_iterator first, last;
bool more = false;
if (tracker_data->init) {
first = show_data.send_buffer.begin();
tracker_data->init = 0;
} else {
first = tracker_data->first;
}
int rem_num = show_data.send_buffer.end() - first;
int send_num = (rem_num < kMaxElementsPerRound) ? rem_num :
kMaxElementsPerRound;
last = first + send_num;
copy(first, last, back_inserter(dest_buffer));
// Decide if we want to be called again.
if ((rem_num - send_num) > 0) {
more = true;
} else {
more = false;
}
const IFMapPerClientNodesShowReq *request =
static_cast<const IFMapPerClientNodesShowReq *>(ps.snhRequest_.get());
IFMapPerClientNodesShowResp *response = new IFMapPerClientNodesShowResp();
response->set_node_db(dest_buffer);
response->set_context(request->context());
response->set_more(more);
response->Response();
tracker_data->first = first + send_num;
// Return 'false' to be called again
return (!more);
}
void IFMapPerClientNodesShowReq::HandleRequest() const {
RequestPipeline::StageSpec s0, s1;
TaskScheduler *scheduler = TaskScheduler::GetInstance();
// 2 stages - first: gather/read, second: send
s0.taskId_ = scheduler->GetTaskId("db::DBTable");
s0.allocFn_ = ShowIFMapPerClientNodes::AllocBuffer;
s0.cbFn_ = ShowIFMapPerClientNodes::BufferStage;
s0.instances_.push_back(0);
// control-node ifmap show command task
s1.taskId_ = scheduler->GetTaskId("cn_ifmap::ShowCommand");
s1.allocFn_ = ShowIFMapPerClientNodes::AllocTracker;
s1.cbFn_ = ShowIFMapPerClientNodes::SendStage;
s1.instances_.push_back(0);
RequestPipeline::PipeSpec ps(this);
ps.stages_= list_of(s0)(s1);
RequestPipeline rp(ps);
}
class ShowIFMapPerClientLinkTable {
public:
static const int kMaxElementsPerRound = 50;
struct ShowData : public RequestPipeline::InstData {
vector<IFMapPerClientLinksShowInfo> send_buffer;
};
static RequestPipeline::InstData *AllocBuffer(int stage) {
return static_cast<RequestPipeline::InstData *>(new ShowData);
}
struct TrackerData : public RequestPipeline::InstData {
// init as 1 indicates we need to init 'first' to begin() since there
// is no way to initialize an iterator here.
TrackerData() : init(1) { }
int init;
vector<IFMapPerClientLinksShowInfo>::const_iterator first;
};
static RequestPipeline::InstData *AllocTracker(int stage) {
return static_cast<RequestPipeline::InstData *>(new TrackerData);
}
static bool CopyNode(IFMapPerClientLinksShowInfo *dest, IFMapLink *src,
IFMapServer *server, int client_index);
static bool BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage,
int instNum, RequestPipeline::InstData *data);
static bool SendStage(const Sandesh *sr, const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data);
};
bool ShowIFMapPerClientLinkTable::CopyNode(IFMapPerClientLinksShowInfo *dest,
IFMapLink *src, IFMapServer *server, int client_index) {
IFMapLinkState *state = server->exporter()->LinkStateLookup(src);
if (state && state->interest().test(client_index)) {
dest->metadata = src->metadata();
dest->left = src->left()->ToString();
dest->right = src->right()->ToString();
if (state->advertised().test(client_index)) {
dest->sent = "Yes";
} else {
dest->sent = "No";
}
return true;
} else {
return false;
}
}
bool ShowIFMapPerClientLinkTable::BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage, int instNum,
RequestPipeline::InstData *data) {
const IFMapPerClientLinksShowReq *request =
static_cast<const IFMapPerClientLinksShowReq *>(ps.snhRequest_.get());
IFMapSandeshContext *sctx =
static_cast<IFMapSandeshContext *>(request->module_context("IFMap"));
string client_index_or_name = request->get_client_index_or_name();
// The user gives us either a name or an index. If the input is not a
// number, find the client's index using its name. If we cant find it,
// we cant process this request. If we have the index, continue processing.
int client_index;
if (!stringToInteger(client_index_or_name, client_index)) {
if (!sctx->ifmap_server()->ClientNameToIndex(client_index_or_name,
&client_index)) {
return true;
}
}
string search_string = request->get_search_string();
IFMapLinkTable *table = static_cast<IFMapLinkTable *>(
sctx->ifmap_server()->database()->FindTable("__ifmap_metadata__.0"));
if (table) {
ShowData *show_data = static_cast<ShowData *>(data);
show_data->send_buffer.reserve(table->Size());
DBTablePartBase *partition = table->GetTablePartition(0);
DBEntryBase *src = partition->GetFirst();
while (src) {
IFMapLink *src_link = static_cast<IFMapLink *>(src);
src = partition->GetNext(src);
// If the search string is not part of any of the fields, skip it.
if (!search_string.empty() &&
(src_link->metadata().find(search_string) == string::npos) &&
(src_link->left()->ToString().find(search_string) ==
string::npos) &&
(src_link->right()->ToString().find(search_string) ==
string::npos)) {
continue;
}
IFMapPerClientLinksShowInfo dest;
bool send = CopyNode(&dest, src_link, sctx->ifmap_server(),
client_index);
if (send) {
show_data->send_buffer.push_back(dest);
}
}
} else {
IFMAP_WARN(IFMapTblNotFound, "Cant show/find ", "link table");
}
return true;
}
// Can be called multiple times i.e. approx total/kMaxElementsPerRound
bool ShowIFMapPerClientLinkTable::SendStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage, int instNum,
RequestPipeline::InstData *data) {
const RequestPipeline::StageData *prev_stage_data = ps.GetStageData(0);
const ShowIFMapPerClientLinkTable::ShowData &show_data =
static_cast<const ShowIFMapPerClientLinkTable::ShowData &>
(prev_stage_data->at(0));
// Data for this stage
TrackerData *tracker_data = static_cast<TrackerData *>(data);
vector<IFMapPerClientLinksShowInfo> dest_buffer;
vector<IFMapPerClientLinksShowInfo>::const_iterator first, last;
bool more = false;
if (tracker_data->init) {
first = show_data.send_buffer.begin();
tracker_data->init = 0;
} else {
first = tracker_data->first;
}
int rem_num = show_data.send_buffer.end() - first;
int send_num = (rem_num < kMaxElementsPerRound) ? rem_num :
kMaxElementsPerRound;
last = first + send_num;
copy(first, last, back_inserter(dest_buffer));
// Decide if we want to be called again.
if ((rem_num - send_num) > 0) {
more = true;
} else {
more = false;
}
const IFMapPerClientLinksShowReq *request =
static_cast<const IFMapPerClientLinksShowReq *>(ps.snhRequest_.get());
IFMapPerClientLinksShowResp *response = new IFMapPerClientLinksShowResp();
response->set_link_db(dest_buffer);
response->set_context(request->context());
response->set_more(more);
response->Response();
tracker_data->first = first + send_num;
// Return 'false' to be called again
return (!more);
}
void IFMapPerClientLinksShowReq::HandleRequest() const {
RequestPipeline::StageSpec s0, s1;
TaskScheduler *scheduler = TaskScheduler::GetInstance();
// 2 stages - first: gather/read, second: send
s0.taskId_ = scheduler->GetTaskId("db::DBTable");
s0.allocFn_ = ShowIFMapPerClientLinkTable::AllocBuffer;
s0.cbFn_ = ShowIFMapPerClientLinkTable::BufferStage;
s0.instances_.push_back(0);
// control-node ifmap show command task
s1.taskId_ = scheduler->GetTaskId("cn_ifmap::ShowCommand");
s1.allocFn_ = ShowIFMapPerClientLinkTable::AllocTracker;
s1.cbFn_ = ShowIFMapPerClientLinkTable::SendStage;
s1.instances_.push_back(0);
RequestPipeline::PipeSpec ps(this);
ps.stages_= list_of(s0)(s1);
RequestPipeline rp(ps);
}
class ShowIFMapUuidToNodeMapping {
public:
static const int kMaxElementsPerRound = 50;
struct ShowData : public RequestPipeline::InstData {
vector<IFMapUuidToNodeMappingEntry> send_buffer;
};
static RequestPipeline::InstData *AllocBuffer(int stage) {
return static_cast<RequestPipeline::InstData *>(new ShowData);
}
struct TrackerData : public RequestPipeline::InstData {
// init as 1 indicates we need to init 'first' to begin() since there is
// no way to initialize an iterator here.
TrackerData() : init(1) { }
int init;
vector<IFMapUuidToNodeMappingEntry>::const_iterator first;
};
static RequestPipeline::InstData *AllocTracker(int stage) {
return static_cast<RequestPipeline::InstData *>(new TrackerData);
}
static bool BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps, int stage,
int instNum, RequestPipeline::InstData *data);
static bool SendStage(const Sandesh *sr, const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data);
};
bool ShowIFMapUuidToNodeMapping::BufferStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const IFMapUuidToNodeMappingReq *request =
static_cast<const IFMapUuidToNodeMappingReq *>(ps.snhRequest_.get());
IFMapSandeshContext *sctx =
static_cast<IFMapSandeshContext *>(request->module_context("IFMap"));
ShowData *show_data = static_cast<ShowData *>(data);
IFMapVmUuidMapper *mapper = sctx->ifmap_server()->vm_uuid_mapper();
IFMapUuidMapper &uuid_mapper = mapper->uuid_mapper_;
show_data->send_buffer.reserve(uuid_mapper.Size());
for (IFMapUuidMapper::UuidNodeMap::const_iterator iter =
uuid_mapper.uuid_node_map_.begin();
iter != uuid_mapper.uuid_node_map_.end(); ++iter) {
IFMapUuidToNodeMappingEntry dest;
dest.set_uuid(iter->first);
IFMapNode *node = static_cast<IFMapNode *>(iter->second);
dest.set_node_name(node->ToString());
show_data->send_buffer.push_back(dest);
}
return true;
}
// Can be called multiple times i.e. approx total/kMaxElementsPerRound
bool ShowIFMapUuidToNodeMapping::SendStage(const Sandesh *sr,
const RequestPipeline::PipeSpec ps,
int stage, int instNum,
RequestPipeline::InstData *data) {
const RequestPipeline::StageData *prev_stage_data = ps.GetStageData(0);
const ShowIFMapUuidToNodeMapping::ShowData &show_data =
static_cast<const ShowIFMapUuidToNodeMapping::ShowData &>
(prev_stage_data->at(0));
// Data for this stage
TrackerData *tracker_data = static_cast<TrackerData *>(data);
vector<IFMapUuidToNodeMappingEntry> dest_buffer;
vector<IFMapUuidToNodeMappingEntry>::const_iterator first, last;
bool more = false;
if (tracker_data->init) {
first = show_data.send_buffer.begin();
tracker_data->init = 0;
} else {
first = tracker_data->first;
}
int rem_num = show_data.send_buffer.end() - first;