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master-path-handlers.cc
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master-path-handlers.cc
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you 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.
//
// The following only applies to changes made to this file as part of YugaByte development.
//
// Portions Copyright (c) YugaByte, Inc.
//
// 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 "yb/master/master-path-handlers.h"
#include <algorithm>
#include <functional>
#include <iomanip>
#include <map>
#include <memory>
#include <sstream>
#include <unordered_set>
#include <boost/date_time/posix_time/time_formatters.hpp>
#include "yb/common/common_types_util.h"
#include "yb/common/hybrid_time.h"
#include "yb/common/path-handler-util.h"
#include "yb/dockv/partition.h"
#include "yb/common/schema_pbutil.h"
#include "yb/common/schema.h"
#include "yb/common/transaction.h"
#include "yb/common/wire_protocol.h"
#include "yb/gutil/map-util.h"
#include "yb/gutil/stringprintf.h"
#include "yb/gutil/strings/human_readable.h"
#include "yb/gutil/strings/join.h"
#include "yb/gutil/strings/numbers.h"
#include "yb/gutil/strings/substitute.h"
#include "yb/master/catalog_entity_info.pb.h"
#include "yb/master/catalog_manager.h"
#include "yb/master/master_fwd.h"
#include "yb/master/catalog_entity_info.h"
#include "yb/master/catalog_manager_if.h"
#include "yb/master/encryption_manager.h"
#include "yb/master/master.h"
#include "yb/master/master_cluster.pb.h"
#include "yb/master/master_encryption.pb.h"
#include "yb/master/master_util.h"
#include "yb/master/scoped_leader_shared_lock.h"
#include "yb/master/sys_catalog.h"
#include "yb/master/ts_descriptor.h"
#include "yb/master/ts_manager.h"
#include "yb/master/xcluster/xcluster_manager_if.h"
#include "yb/master/xcluster/xcluster_status.h"
#include "yb/server/webserver.h"
#include "yb/server/webui_util.h"
#include "yb/tablet/tablet_types.pb.h"
#include "yb/util/curl_util.h"
#include "yb/util/flags.h"
#include "yb/util/jsonwriter.h"
#include "yb/util/logging.h"
#include "yb/util/status_log.h"
#include "yb/util/string_case.h"
#include "yb/util/timestamp.h"
#include "yb/util/url-coding.h"
#include "yb/util/version_info.h"
#include "yb/util/version_info.pb.h"
DEFINE_UNKNOWN_int32(
hide_dead_node_threshold_mins, 60 * 24,
"After this many minutes of no heartbeat from a node, hide it from the UI "
"(we presume it has been removed from the cluster). If -1, this flag is ignored and node is "
"never hidden from the UI");
DEFINE_RUNTIME_bool(master_webserver_require_https, false,
"Require HTTPS when redirecting master UI requests to the leader.");
DEFINE_test_flag(bool, master_ui_redirect_to_leader, true,
"Redirect master UI requests to the master leader");
DEFINE_RUNTIME_uint32(leaderless_tablet_alert_delay_secs, 2 * 60,
"From master's view, if the tablet doesn't have a valid leader for this amount of seconds, "
"alert it as a leaderless tablet.");
DECLARE_int32(ysql_tablespace_info_refresh_secs);
DECLARE_string(webserver_ca_certificate_file);
DECLARE_string(webserver_certificate_file);
DEPRECATE_FLAG(uint64, master_maximum_heartbeats_without_lease, "12_2023");
namespace yb {
namespace {
const int64_t kCurlTimeoutSec = 180;
const char* GetProtocol() {
return FLAGS_webserver_certificate_file.empty() || !FLAGS_master_webserver_require_https
? "http" : "https";
}
std::optional<HostPortPB> GetPublicHttpHostPort(const ServerRegistrationPB& registration) {
if (registration.http_addresses().empty()) {
return {};
}
if (registration.broadcast_addresses().empty()) {
return registration.http_addresses(0);
}
HostPortPB public_http_hp;
public_http_hp.set_host(registration.broadcast_addresses(0).host());
public_http_hp.set_port(registration.http_addresses(0).port());
return public_http_hp;
}
std::optional<HostPortPB> GetRpcBindAddress(const ServerRegistrationPB& reg) {
if (reg.private_rpc_addresses().empty()) {
return {};
}
return reg.private_rpc_addresses(0);
}
std::string BoolToString(bool val) { return val ? "true" : "false"; }
class AutoFieldsetScope {
public:
explicit AutoFieldsetScope(std::stringstream& output, const std::string& name) : output_(output) {
output_ << kFieldsetStart;
output << kFieldsetLegendStart << name << kFieldsetLegendEnd;
}
~AutoFieldsetScope() { output_ << kFieldsetEnd; }
private:
static constexpr auto kFieldsetStart =
"<br><fieldset style=\"border: solid; border-width: thin;padding: 10px 10px;border-color: "
"#a8a8a8;\">\n";
static constexpr auto kFieldsetEnd = "</fieldset>\n";
static constexpr auto kFieldsetLegendStart =
"<legend visible=\"true\" style=\"width:auto;padding: 0px 10px;\">";
static constexpr auto kFieldsetLegendEnd = "</legend>\n";
std::stringstream& output_;
};
std::optional<uint64_t> ToUnsignedOrNullopt(int64_t val) {
if (val == std::numeric_limits<int64_t>::max()) {
return std::nullopt;
} else {
return val;
}
}
} // namespace
using consensus::RaftPeerPB;
using std::vector;
using std::map;
using std::pair;
using std::string;
using std::stringstream;
using std::unique_ptr;
using std::min;
using strings::Substitute;
using server::MonitoredTask;
using namespace std::placeholders;
namespace master {
MasterPathHandlers::~MasterPathHandlers() {
}
void MasterPathHandlers::TabletCounts::operator+=(const TabletCounts& other) {
user_tablet_leaders += other.user_tablet_leaders;
user_tablet_followers += other.user_tablet_followers;
system_tablet_leaders += other.system_tablet_leaders;
system_tablet_followers += other.system_tablet_followers;
hidden_tablet_peers += other.hidden_tablet_peers;
}
MasterPathHandlers::ZoneTabletCounts::ZoneTabletCounts(
const TabletCounts& tablet_counts,
uint32_t active_tablets_count) : tablet_counts(tablet_counts),
active_tablets_count(active_tablets_count) {
}
void MasterPathHandlers::ZoneTabletCounts::operator+=(const ZoneTabletCounts& other) {
tablet_counts += other.tablet_counts;
node_count += other.node_count;
active_tablets_count += other.active_tablets_count;
}
// Retrieve the specified URL response from the leader master
void MasterPathHandlers::RedirectToLeader(
const Webserver::WebRequest& req, Webserver::WebResponse* resp) {
std::stringstream* output = &resp->output;
auto redirect_result = GetLeaderAddress(req);
if (!redirect_result) {
auto s = redirect_result.status();
LOG(WARNING) << s.ToString();
*output << "<h2>" << EscapeForHtmlToString(s.ToString()) << "</h2>\n";
return;
}
std::string redirect = *redirect_result;
EasyCurl curl;
faststring buf;
curl.set_follow_redirects(true);
curl.set_ca_cert(FLAGS_webserver_ca_certificate_file);
auto s = curl.FetchURL(redirect, &buf, kCurlTimeoutSec, {} /* headers */);
if (!s.ok()) {
LOG(WARNING) << "Error retrieving leader master URL: " << redirect
<< ", error :" << s.ToString();
*output << "Error retrieving leader master URL: <a href=\"" << redirect
<< "\">" + redirect + "</a><br> Error: "
<< EscapeForHtmlToString(s.ToString()) << ".<br>";
return;
}
*output << buf.ToString();
}
Result<std::string> MasterPathHandlers::GetLeaderAddress(const Webserver::WebRequest& req) {
vector<ServerEntryPB> masters;
Status s = master_->ListMasters(&masters);
if (!s.ok()) {
s = s.CloneAndPrepend("Unable to list masters during web request handling");
return s;
}
ServerRegistrationPB local_reg;
s = master_->GetMasterRegistration(&local_reg);
if (!s.ok()) {
s = s.CloneAndPrepend("Unable to get local registration during web request handling");
return s;
}
const auto leader = std::find_if(masters.begin(), masters.end(), [](const auto& master) {
return !master.has_error() && master.role() == PeerRole::LEADER;
});
if (leader == masters.end() || leader->registration().http_addresses().empty()) {
return STATUS(
NotFound, "Unable to locate leader master to redirect this request: " + req.redirect_uri);
}
auto& reg = leader->registration();
auto http_broadcast_addresses = reg.broadcast_addresses();
for (HostPortPB& host_port : http_broadcast_addresses) {
host_port.set_port(reg.http_addresses(0).port());
}
return Format(
"$0://$1$2$3",
GetProtocol(),
HostPortPBToString(DesiredHostPort(
http_broadcast_addresses,
reg.http_addresses(),
reg.cloud_info(),
local_reg.cloud_info())),
req.redirect_uri,
req.query_string.empty() ? "?raw" : "?" + req.query_string + "&raw");
}
void MasterPathHandlers::CallIfLeaderOrPrintRedirect(
const Webserver::WebRequest& req, Webserver::WebResponse* resp,
const Webserver::PathHandlerCallback& callback) {
string redirect;
// Lock the CatalogManager in a self-contained block, to prevent double-locking on callbacks.
{
SCOPED_LEADER_SHARED_LOCK(l, master_->catalog_manager_impl());
// If we are not the master leader, redirect the URL.
if (!l.IsInitializedAndIsLeader() && PREDICT_TRUE(FLAGS_TEST_master_ui_redirect_to_leader)) {
RedirectToLeader(req, resp);
return;
}
// Handle the request as a leader master.
callback(req, resp);
return;
}
}
inline void MasterPathHandlers::TServerTable(std::stringstream* output,
TServersViewType viewType) {
*output << "<table class='table table-striped'>\n";
*output << " <tr>\n"
<< " <th>Server</th>\n"
<< " <th>Time since </br>heartbeat</th>\n"
<< " <th>Status & Uptime</th>\n";
if (viewType == TServersViewType::kTServersClocksView) {
*output << " <th>Physical Time (UTC)</th>\n"
<< " <th>Hybrid Time (UTC)</th>\n"
<< " <th>Heartbeat RTT</th>\n";
} else {
DCHECK_EQ(viewType, TServersViewType::kTServersDefaultView);
*output << " <th>User Tablet-Peers / Leaders</th>\n"
<< " <th>RAM Used</th>\n"
<< " <th>Num SST Files</th>\n"
<< " <th>Total SST Files Size</th>\n"
<< " <th>Uncompressed SST </br>Files Size</th>\n"
<< " <th>Read ops/sec</th>\n"
<< " <th>Write ops/sec</th>\n";
}
*output << " <th>Cloud</th>\n"
<< " <th>Region</th>\n"
<< " <th>Zone</th>\n";
if (viewType == TServersViewType::kTServersDefaultView) {
*output << " <th>System Tablet-Peers / Leaders</th>\n"
<< " <th>Active Tablet-Peers</th>\n";
}
*output << " </tr>\n";
}
namespace {
constexpr int kHoursPerDay = 24;
constexpr int kSecondsPerMinute = 60;
constexpr int kMinutesPerHour = 60;
constexpr int kSecondsPerHour = kSecondsPerMinute * kMinutesPerHour;
constexpr int kMinutesPerDay = kMinutesPerHour * kHoursPerDay;
constexpr int kSecondsPerDay = kSecondsPerHour * kHoursPerDay;
string UptimeString(uint64_t seconds) {
auto days = seconds / kSecondsPerDay;
auto hours = (seconds / kSecondsPerHour) - (days * kHoursPerDay);
auto mins = (seconds / kSecondsPerMinute) - (days * kMinutesPerDay) - (hours * kMinutesPerHour);
std::ostringstream uptime_string_stream;
uptime_string_stream << " ";
if (days > 0) {
uptime_string_stream << days << "days, ";
}
uptime_string_stream << hours << ":" << std::setw(2) << std::setfill('0') << mins <<
":" << std::setw(2) << std::setfill('0') << (seconds % 60);
return uptime_string_stream.str();
}
bool ShouldHideTserverNodeFromDisplay(
const TSDescriptor* ts, int hide_dead_node_threshold_mins) {
return hide_dead_node_threshold_mins > 0
&& !ts->IsLive()
&& ts->TimeSinceHeartbeat().ToMinutes() > hide_dead_node_threshold_mins;
}
int GetTserverCountForDisplay(const TSManager* ts_manager) {
int count = 0;
for (const auto& tserver : ts_manager->GetAllDescriptors()) {
if (!ShouldHideTserverNodeFromDisplay(tserver.get(), FLAGS_hide_dead_node_threshold_mins)) {
count++;
}
}
return count;
}
} // anonymous namespace
string MasterPathHandlers::GetHttpHostPortFromServerRegistration(
const ServerRegistrationPB& reg) const {
auto hp = GetPublicHttpHostPort(reg);
if (hp) {
return HostPortPBToString(*hp);
}
return "";
}
namespace {
bool TabletServerComparator(
const std::shared_ptr<TSDescriptor>& a, const std::shared_ptr<TSDescriptor>& b) {
auto a_cloud_info = a->GetRegistration().common().cloud_info();
auto b_cloud_info = b->GetRegistration().common().cloud_info();
if (a_cloud_info.placement_cloud() == b_cloud_info.placement_cloud()) {
if (a_cloud_info.placement_region() == b_cloud_info.placement_region()) {
if (a_cloud_info.placement_zone() == b_cloud_info.placement_zone()) {
return a->permanent_uuid() < b->permanent_uuid();
}
return a_cloud_info.placement_zone() < b_cloud_info.placement_zone();
}
return a_cloud_info.placement_region() < b_cloud_info.placement_region();
}
return a_cloud_info.placement_cloud() < b_cloud_info.placement_cloud();
}
} // anonymous namespace
MasterPathHandlers::UniverseTabletCounts MasterPathHandlers::CalculateUniverseTabletCounts(
const TabletCountMap& tablet_count_map, const std::vector<std::shared_ptr<TSDescriptor>>& descs,
const BlacklistSet& blacklist_set,
int hide_dead_node_threshold_mins) {
UniverseTabletCounts counts;
for (const auto& desc : descs) {
if (ShouldHideTserverNodeFromDisplay(desc.get(), hide_dead_node_threshold_mins)) {
continue;
}
const auto& placement_uuid = desc->placement_uuid();
PlacementClusterTabletCounts& placement_cluster_counts =
counts.per_placement_cluster_counts[placement_uuid];
if (auto* tablet_count = FindOrNull(tablet_count_map, desc->permanent_uuid())) {
placement_cluster_counts.counts += *tablet_count;
}
if (desc->IsBlacklisted(blacklist_set)) {
placement_cluster_counts.blacklisted_node_count++;
} else if (desc->IsLive()) {
placement_cluster_counts.live_node_count++;
} else {
placement_cluster_counts.dead_node_count++;
}
placement_cluster_counts.active_tablet_peer_count += desc->num_live_replicas();
}
auto limits = tserver::GetTabletReplicaPerResourceLimits();
for (auto& [placement_uuid, cluster_counts] : counts.per_placement_cluster_counts) {
auto cluster_info = ComputeAggregatedClusterInfo(descs, placement_uuid);
cluster_counts.tablet_replica_limit =
ToUnsignedOrNullopt(ComputeTabletReplicaLimit(cluster_info, limits));
}
return counts;
}
void MasterPathHandlers::TServerDisplay(const std::string& current_uuid,
std::vector<std::shared_ptr<TSDescriptor>>* descs,
TabletCountMap* tablet_map,
std::stringstream* output,
const int hide_dead_node_threshold_mins,
TServersViewType viewType) {
// Copy vector to avoid changes to the reference descs passed
std::vector<std::shared_ptr<TSDescriptor>> local_descs(*descs);
auto blacklist_result = master_->catalog_manager()->BlacklistSetFromPB();
BlacklistSet blacklist = blacklist_result.ok() ? *blacklist_result : BlacklistSet();
auto leader_blacklist_result =
master_->catalog_manager()->BlacklistSetFromPB(true); // leader_blacklist
BlacklistSet leader_blacklist =
leader_blacklist_result.ok() ? *leader_blacklist_result : BlacklistSet();
vector<AffinitizedZonesSet> affinitized_zones;
auto status = master_->catalog_manager()->GetAllAffinitizedZones(&affinitized_zones);
if (!status.ok()) {
status = status.CloneAndPrepend("Unable to get preferred zone list");
LOG(WARNING) << status.ToString();
}
// Comparator orders by cloud, region, zone and uuid fields.
std::sort(local_descs.begin(), local_descs.end(), &TabletServerComparator);
for (const auto& desc : local_descs) {
if (desc->placement_uuid() == current_uuid) {
if (ShouldHideTserverNodeFromDisplay(desc.get(), hide_dead_node_threshold_mins)) {
continue;
}
const string time_since_hb = StringPrintf("%.1fs", desc->TimeSinceHeartbeat().ToSeconds());
TSRegistrationPB reg = desc->GetRegistration();
string host_port = GetHttpHostPortFromServerRegistration(reg.common());
*output << " <tr>\n";
*output << " <td>" << RegistrationToHtml(reg.common(), host_port) << "</br>";
*output << " " << desc->permanent_uuid();
if (viewType == TServersViewType::kTServersDefaultView) {
auto ci = reg.common().cloud_info();
for (size_t i = 0; i < affinitized_zones.size(); i++) {
if (affinitized_zones[i].find(ci) != affinitized_zones[i].end()) {
*output << "</br> Leader preference priority: " << i + 1;
break;
}
}
}
*output << "</td><td>" << time_since_hb << "</td>";
string status;
string color = "Green";
if (desc->IsLive()) {
status = Format("$0:$1", kTserverAlive, UptimeString(desc->uptime_seconds()));
} else {
color = "Red";
status = kTserverDead;
}
if (viewType == TServersViewType::kTServersDefaultView) {
if (desc->IsBlacklisted(blacklist)) {
color = color == "Green" ? kYBOrange : color;
status += "</br>Blacklisted";
}
if (desc->IsBlacklisted(leader_blacklist)) {
color = color == "Green" ? kYBOrange : color;
status += "</br>Leader Blacklisted";
}
}
*output << Format(" <td style=\"color:$0\">$1</td>", color, status);
auto tserver = tablet_map->find(desc->permanent_uuid());
bool no_tablets = tserver == tablet_map->end();
if (viewType == TServersViewType::kTServersClocksView) {
// Render physical time.
const Timestamp p_ts(desc->physical_time());
*output << " <td>" << p_ts.ToHumanReadableTime() << "</td>";
// Render the physical and logical components of the hybrid time.
const HybridTime ht = desc->hybrid_time();
const Timestamp h_ts(ht.GetPhysicalValueMicros());
*output << " <td>" << h_ts.ToHumanReadableTime();
if (ht.GetLogicalValue()) {
*output << " / Logical: " << ht.GetLogicalValue();
}
*output << "</td>";
// Render the roundtrip time of previous heartbeat.
double rtt_ms = desc->heartbeat_rtt().ToMicroseconds()/1000.0;
*output << " <td>" << StringPrintf("%.2fms", rtt_ms) << "</td>";
} else {
DCHECK_EQ(viewType, TServersViewType::kTServersDefaultView);
*output << " <td>" << (no_tablets ? 0
: tserver->second.user_tablet_leaders + tserver->second.user_tablet_followers)
<< " / " << (no_tablets ? 0 : tserver->second.user_tablet_leaders) << "</td>";
*output << " <td>" << HumanizeBytes(desc->total_memory_usage()) << "</td>";
*output << " <td>" << desc->num_sst_files() << "</td>";
*output << " <td>" << HumanizeBytes(desc->total_sst_file_size()) << "</td>";
*output << " <td>" << HumanizeBytes(desc->uncompressed_sst_file_size()) << "</td>";
*output << " <td>" << desc->read_ops_per_sec() << "</td>";
*output << " <td>" << desc->write_ops_per_sec() << "</td>";
}
*output << " <td>" << EscapeForHtmlToString(reg.common().cloud_info().placement_cloud())
<< "</td>";
*output << " <td>" << EscapeForHtmlToString(reg.common().cloud_info().placement_region())
<< "</td>";
*output << " <td>" << EscapeForHtmlToString(reg.common().cloud_info().placement_zone())
<< "</td>";
if (viewType == TServersViewType::kTServersDefaultView) {
*output << " <td>" << (no_tablets ? 0
: tserver->second.system_tablet_leaders + tserver->second.system_tablet_followers)
<< " / " << (no_tablets ? 0 : tserver->second.system_tablet_leaders) << "</td>";
*output << " <td>" << (no_tablets ? 0 : desc->num_live_replicas()) << "</td>";
}
*output << " </tr>\n";
}
}
*output << "</table>\n";
}
void MasterPathHandlers::DisplayUniverseSummary(
const TabletCountMap& tablet_map, const std::vector<std::shared_ptr<TSDescriptor>>& all_descs,
const std::string& live_id,
int hide_dead_node_threshold_mins,
std::stringstream* output) {
auto blacklist_result = master_->catalog_manager()->BlacklistSetFromPB();
BlacklistSet blacklist = blacklist_result.ok() ? *blacklist_result : BlacklistSet();
auto universe_counts = CalculateUniverseTabletCounts(
tablet_map, all_descs, blacklist, hide_dead_node_threshold_mins);
// auto include_placement_uuids = universe_counts.per_placement_cluster_counts.size() > 1;
// auto placement_uuid_header = include_placement_uuids ? "<th>Cluster UUID</th>\n" : "";
*output << "<h2>Universe Summary</h2>\n"
<< "<table class='table table-striped'>\n"
<< " <tr>\n"
<< " <th>Cluster UUID</th>\n"
<< " <th>Total Live TServers</th>\n"
<< " <th>Total Blacklisted TServers</th>\n"
<< " <th>Total Dead TServers</th>\n"
<< " <th>User Tablet-Peers</th>\n"
<< " <th>System Tablet-Peers</th>\n"
<< " <th>Hidden Tablet-Peers</th>\n"
<< " <th>Active Tablet-Peers</th>\n"
<< " <th>Tablet Peer Limit</th>\n"
<< " </tr>\n";
for (const auto& [placement_uuid, cluster_counts] :
universe_counts.per_placement_cluster_counts) {
auto placement_uuid_entry = Format(
"$0 $1", placement_uuid == live_id ? "Primary Cluster" : "Read Replica", placement_uuid);
auto limit_entry = cluster_counts.tablet_replica_limit.has_value()
? Format("$0", *cluster_counts.tablet_replica_limit)
: "N/A";
auto user_total =
cluster_counts.counts.user_tablet_followers + cluster_counts.counts.user_tablet_leaders;
auto system_total =
cluster_counts.counts.system_tablet_followers + cluster_counts.counts.system_tablet_leaders;
*output << "<tr>\n"
// << placement_uuid_entry
<< " <td>" << placement_uuid_entry << "</td>\n"
<< " <td>" << cluster_counts.live_node_count << "</td>\n"
<< " <td>" << cluster_counts.blacklisted_node_count << "</td>\n"
<< " <td>" << cluster_counts.dead_node_count << "</td>\n"
<< " <td>" << user_total << "</td>\n"
<< " <td>" << system_total << "</td>\n"
<< " <td>" << cluster_counts.counts.hidden_tablet_peers << "</td>\n"
<< " <td>" << cluster_counts.active_tablet_peer_count << "</td>\n"
<< " <td>" << limit_entry << "</td>\n";
}
*output << "</table>\n";
}
void MasterPathHandlers::DisplayTabletZonesTable(
const ZoneTabletCounts::CloudTree& cloud_tree,
std::stringstream* output
) {
*output << "<h3>Tablet-Peers by Availability Zone</h3>\n"
<< "<table class='table table-striped'>\n"
<< " <tr>\n"
<< " <th>Cloud</th>\n"
<< " <th>Region</th>\n"
<< " <th>Zone</th>\n"
<< " <th>Total Nodes</th>\n"
<< " <th>User Tablet-Peers / Leaders</th>\n"
<< " <th>System Tablet-Peers / Leaders</th>\n"
<< " <th>Active Tablet-Peers</th>\n"
<< " </tr>\n";
for (const auto& cloud_iter : cloud_tree) {
const auto& region_tree = cloud_iter.second;
bool needs_new_row = false;
int total_size_rows = 0;
for (const auto& region_iter : region_tree) {
total_size_rows += region_iter.second.size();
}
*output << "<tr>\n"
<< " <td rowspan=\"" << total_size_rows <<"\">"
<< EscapeForHtmlToString(cloud_iter.first)
<< "</td>\n";
for (const auto& region_iter : region_tree) {
const auto& zone_tree = region_iter.second;
if (needs_new_row) {
*output << "<tr>\n";
needs_new_row = false;
}
*output << " <td rowspan=\"" << zone_tree.size() <<"\">"
<< EscapeForHtmlToString(region_iter.first)
<< "</td>\n";
for (const auto& zone_iter : zone_tree) {
const auto& counts = zone_iter.second;
if (needs_new_row) {
*output << "<tr>\n";
}
*output << " <td>" << EscapeForHtmlToString(zone_iter.first) << "</td>\n";
uint32_t user_leaders = counts.tablet_counts.user_tablet_leaders;
uint32_t user_total = user_leaders + counts.tablet_counts.user_tablet_followers;
uint32_t system_leaders = counts.tablet_counts.system_tablet_leaders;
uint32_t system_total = system_leaders + counts.tablet_counts.system_tablet_followers;
*output << " <td>" << counts.node_count << "</td>\n"
<< " <td>" << user_total << " / " << user_leaders << "</td>\n"
<< " <td>" << system_total << " / " << system_leaders << "</td>\n"
<< " <td>" << counts.active_tablets_count << "</td>\n"
<< "</tr>\n";
needs_new_row = true;
}
}
}
*output << "</table>\n";
}
MasterPathHandlers::ZoneTabletCounts::CloudTree MasterPathHandlers::CalculateTabletCountsTree(
const std::vector<std::shared_ptr<TSDescriptor>>& descriptors,
const TabletCountMap& tablet_count_map
) {
ZoneTabletCounts::CloudTree cloud_tree;
for (const auto& descriptor : descriptors) {
CloudInfoPB cloud_info = descriptor->GetRegistration().common().cloud_info();
std::string cloud = cloud_info.placement_cloud();
std::string region = cloud_info.placement_region();
std::string zone = cloud_info.placement_zone();
auto tablet_count_search = tablet_count_map.find(descriptor->permanent_uuid());
ZoneTabletCounts counts = tablet_count_search == tablet_count_map.end()
? ZoneTabletCounts()
: ZoneTabletCounts(tablet_count_search->second, descriptor->num_live_replicas());
auto cloud_iter = cloud_tree.find(cloud);
if (cloud_iter == cloud_tree.end()) {
ZoneTabletCounts::RegionTree region_tree;
ZoneTabletCounts::ZoneTree zone_tree;
zone_tree.emplace(zone, std::move(counts));
region_tree.emplace(region, std::move(zone_tree));
cloud_tree.emplace(cloud, std::move(region_tree));
} else {
ZoneTabletCounts::RegionTree& region_tree = cloud_iter->second;
auto region_iter = region_tree.find(region);
if (region_iter == region_tree.end()) {
ZoneTabletCounts::ZoneTree zone_tree;
zone_tree.emplace(zone, std::move(counts));
region_tree.emplace(region, std::move(zone_tree));
} else {
ZoneTabletCounts::ZoneTree& zone_tree = region_iter->second;
auto zone_iter = zone_tree.find(zone);
if (zone_iter == zone_tree.end()) {
zone_tree.emplace(zone, std::move(counts));
} else {
zone_iter->second += counts;
}
}
}
}
return cloud_tree;
}
void MasterPathHandlers::HandleTabletServers(const Webserver::WebRequest& req,
Webserver::WebResponse* resp,
TServersViewType viewType) {
std::stringstream *output = &resp->output;
master_->catalog_manager()->AssertLeaderLockAcquiredForReading();
auto threshold_arg = req.parsed_args.find("live_threshold_mins");
int hide_dead_node_threshold_override = FLAGS_hide_dead_node_threshold_mins;
if (threshold_arg != req.parsed_args.end()) {
hide_dead_node_threshold_override = atoi(threshold_arg->second.c_str());
}
SysClusterConfigEntryPB config;
Status s = master_->catalog_manager()->GetClusterConfig(&config);
if (!s.ok()) {
*output << "<div class=\"alert alert-warning\">"
<< EscapeForHtmlToString(s.ToString()) << "</div>";
return;
}
auto live_id = config.replication_info().live_replicas().placement_uuid();
vector<std::shared_ptr<TSDescriptor> > descs;
const auto& ts_manager = master_->ts_manager();
ts_manager->GetAllDescriptors(&descs);
// Get user and system tablet leader and follower counts for each TabletServer
TabletCountMap tablet_map;
CalculateTabletMap(&tablet_map);
std::unordered_set<string> read_replica_uuids;
for (auto desc : descs) {
if (!read_replica_uuids.count(desc->placement_uuid()) && desc->placement_uuid() != live_id) {
read_replica_uuids.insert(desc->placement_uuid());
}
}
*output << std::setprecision(output_precision_);
if (viewType == TServersViewType::kTServersDefaultView) {
DisplayUniverseSummary(tablet_map, descs, live_id, hide_dead_node_threshold_override, output);
}
*output << "<h2>Tablet Servers</h2>\n";
if (!live_id.empty()) {
*output << "<h3 style=\"color:" << kYBDarkBlue << "\">Primary Cluster UUID: "
<< live_id << "</h3>\n";
}
TServerTable(output, viewType);
TServerDisplay(live_id, &descs, &tablet_map, output, hide_dead_node_threshold_override,
viewType);
for (const auto& read_replica_uuid : read_replica_uuids) {
*output << "<h3 style=\"color:" << kYBDarkBlue << "\">Read Replica UUID: "
<< (read_replica_uuid.empty() ? kNoPlacementUUID : read_replica_uuid) << "</h3>\n";
TServerTable(output, viewType);
TServerDisplay(read_replica_uuid, &descs, &tablet_map, output,
hide_dead_node_threshold_override, viewType);
}
if (viewType == TServersViewType::kTServersDefaultView) {
*output << "<p> *Placement policy, Preferred zones, and Node Blacklist will affect the Peer "
"and Leader distribution.</p>";
if (master_->catalog_manager()->IsLoadBalancerEnabled()) {
IsLoadBalancedRequestPB req;
IsLoadBalancedResponsePB resp;
Status load_balanced = master_->catalog_manager()->IsLoadBalanced(&req, &resp);
if (load_balanced.ok()) {
*output << "<h4 style=\"color:Green\"><i class='fa fa-tasks yb-dashboard-icon' "
"aria-hidden='true'></i>Cluster Load is Balanced</h4>\n";
} else {
*output
<< "<h4 style=\"color:" << kYBOrange
<< "\"><i class='fa fa-tasks yb-dashboard-icon' aria-hidden='true'></i>Cluster Load "
"is not Balanced</h4>\n";
}
}
}
ZoneTabletCounts::CloudTree counts_tree = CalculateTabletCountsTree(descs, tablet_map);
DisplayTabletZonesTable(counts_tree, output);
}
void MasterPathHandlers::HandleGetTserverStatus(const Webserver::WebRequest& req,
Webserver::WebResponse* resp) {
std::stringstream *output = &resp->output;
master_->catalog_manager()->AssertLeaderLockAcquiredForReading();
JsonWriter jw(output, JsonWriter::COMPACT);
SysClusterConfigEntryPB config;
Status s = master_->catalog_manager()->GetClusterConfig(&config);
if (!s.ok()) {
jw.StartObject();
jw.String("error");
jw.String(s.ToString());
return;
}
vector<std::shared_ptr<TSDescriptor> > descs;
const auto& ts_manager = master_->ts_manager();
ts_manager->GetAllDescriptors(&descs);
// Get user and system tablet leader and follower counts for each TabletServer.
TabletCountMap tablet_map;
CalculateTabletMap(&tablet_map);
std::unordered_set<string> cluster_uuids;
auto primary_uuid = config.replication_info().live_replicas().placement_uuid();
cluster_uuids.insert(primary_uuid);
for (auto desc : descs) {
cluster_uuids.insert(desc->placement_uuid());
}
jw.StartObject();
for (const auto& cur_uuid : cluster_uuids) {
jw.String(cur_uuid);
jw.StartObject();
for (auto desc : descs) {
if (desc->placement_uuid() == cur_uuid) {
TSRegistrationPB reg = desc->GetRegistration();
string host_port = GetHttpHostPortFromServerRegistration(reg.common());
jw.String(host_port);
jw.StartObject();
// Some stats may be repeated as strings due to backwards compatability.
jw.String("time_since_hb");
jw.String(StringPrintf("%.1fs", desc->TimeSinceHeartbeat().ToSeconds()));
jw.String("time_since_hb_sec");
jw.Double(desc->TimeSinceHeartbeat().ToSeconds());
if (desc->IsLive()) {
jw.String("status");
jw.String(kTserverAlive);
jw.String("uptime_seconds");
jw.Uint64(desc->uptime_seconds());
} else {
jw.String("status");
jw.String(kTserverDead);
jw.String("uptime_seconds");
jw.Uint(0);
}
jw.String("ram_used");
jw.String(HumanizeBytes(desc->total_memory_usage()));
jw.String("ram_used_bytes");
jw.Uint64(desc->total_memory_usage());
jw.String("num_sst_files");
jw.Uint64(desc->num_sst_files());
jw.String("total_sst_file_size");
jw.String(HumanizeBytes(desc->total_sst_file_size()));
jw.String("total_sst_file_size_bytes");
jw.Uint64(desc->total_sst_file_size());
jw.String("uncompressed_sst_file_size");
jw.String(HumanizeBytes(desc->uncompressed_sst_file_size()));
jw.String("uncompressed_sst_file_size_bytes");
jw.Uint64(desc->uncompressed_sst_file_size());
jw.String("path_metrics");
jw.StartArray();
for(const auto& path_metric : desc->path_metrics()) {
jw.StartObject();
jw.String("path");
jw.String(path_metric.first);
jw.String("space_used");
jw.Uint64(path_metric.second.used_space);
jw.String("total_space_size");
jw.Uint64(path_metric.second.total_space);
jw.EndObject();
}
jw.EndArray();
jw.String("read_ops_per_sec");
jw.Double(desc->read_ops_per_sec());
jw.String("write_ops_per_sec");
jw.Double(desc->write_ops_per_sec());
auto tserver = tablet_map.find(desc->permanent_uuid());
uint user_tablets_total = 0;
uint user_tablets_leaders = 0;
uint system_tablets_total = 0;
uint system_tablets_leaders = 0;
int active_tablets = 0;
if (!(tserver == tablet_map.end())) {
user_tablets_total = tserver->second.user_tablet_leaders +
tserver->second.user_tablet_followers;
user_tablets_leaders = tserver->second.user_tablet_leaders;
system_tablets_total = tserver->second.system_tablet_leaders +
tserver->second.system_tablet_followers;
system_tablets_leaders = tserver->second.system_tablet_leaders;
active_tablets = desc->num_live_replicas();
}
jw.String("user_tablets_total");
jw.Uint(user_tablets_total);
jw.String("user_tablets_leaders");
jw.Uint(user_tablets_leaders);
jw.String("system_tablets_total");
jw.Uint(system_tablets_total);
jw.String("system_tablets_leaders");
jw.Uint(system_tablets_leaders);
jw.String("active_tablets");
jw.Int(active_tablets);
CloudInfoPB cloud_info = reg.common().cloud_info();
jw.String("cloud");
jw.String(cloud_info.placement_cloud());
jw.String("region");
jw.String(cloud_info.placement_region());
jw.String("zone");
jw.String(cloud_info.placement_zone());
jw.EndObject();
}
}
jw.EndObject();
}
jw.EndObject();
}
void MasterPathHandlers::HandleHealthCheck(
const Webserver::WebRequest& req, Webserver::WebResponse* resp) {
// TODO: Lock not needed since other APIs handle it. Refactor other functions accordingly
std::stringstream *output = &resp->output;
JsonWriter jw(output, JsonWriter::COMPACT);
SysClusterConfigEntryPB config;
Status s = master_->catalog_manager()->GetClusterConfig(&config);
if (!s.ok()) {
jw.StartObject();
jw.String("error");
jw.String(s.ToString());
return;
}
auto replication_factor = master_->catalog_manager()->GetReplicationFactor();
if (!replication_factor.ok()) {
jw.StartObject();
jw.String("error");
jw.String(replication_factor.status().ToString());
return;
}
vector<std::shared_ptr<TSDescriptor> > descs;
const auto* ts_manager = master_->ts_manager();
ts_manager->GetAllDescriptors(&descs);
const auto& live_placement_uuid = config.replication_info().live_replicas().placement_uuid();
// Ignore read replica health for V1.