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named.node.js
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named.node.js
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'use strict';
// SPDX-License-Identifier: GPL-3.0-or-later
// collect statistics from bind (named) v9.10+
//
// bind statistics documentation at:
// http://jpmens.net/2013/03/18/json-in-bind-9-s-statistics-server/
// https://ftp.isc.org/isc/bind/9.10.3/doc/arm/Bv9ARM.ch06.html#statistics
// example configuration in /etc/netdata/node.d/named.conf
// the module supports auto-detection if bind is running at localhost
/*
{
"enable_autodetect": true,
"update_every": 5,
"servers": [
{
"name": "bind1",
"url": "http://127.0.0.1:8888/json/v1/server",
"update_every": 1
},
{
"name": "bind2",
"url": "http://10.0.0.1:8888/xml/v3/server",
"update_every": 2
}
]
}
*/
// the following is the bind named.conf configuration required
/*
statistics-channels {
inet 127.0.0.1 port 8888 allow { 127.0.0.1; };
};
*/
require('url');
require('http');
var XML = require('pixl-xml');
var netdata = require('netdata');
if(netdata.options.DEBUG === true) netdata.debug('loaded', __filename, 'plugin');
var named = {
name: __filename,
enable_autodetect: true,
update_every: 1,
base_priority: 60000,
charts: {},
chartFromMembersCreate: function(service, obj, id, title_suffix, units, family, context, type, priority, algorithm, multiplier, divisor) {
var chart = {
id: id, // the unique id of the chart
name: '', // the unique name of the chart
title: service.name + ' ' + title_suffix, // the title of the chart
units: units, // the units of the chart dimensions
family: family, // the family of the chart
context: context, // the context of the chart
type: type, // the type of the chart
priority: priority, // the priority relative to others in the same family
update_every: service.update_every, // the expected update frequency of the chart
dimensions: {}
};
var found = 0;
var dims = Object.keys(obj);
var len = dims.length;
for(var i = 0; i < len ;i++) {
var x = dims[i];
if(typeof(obj[x]) !== 'undefined' && obj[x] !== 0) {
found++;
chart.dimensions[x] = {
id: x, // the unique id of the dimension
name: x, // the name of the dimension
algorithm: algorithm, // the id of the netdata algorithm
multiplier: multiplier, // the multiplier
divisor: divisor, // the divisor
hidden: false // is hidden (boolean)
};
}
}
if(!found)
return null;
chart = service.chart(id, chart);
this.charts[id] = chart;
return chart;
},
chartFromMembers: function(service, obj, id_suffix, title_suffix, units, family, context, type, priority, algorithm, multiplier, divisor) {
var id = 'named_' + service.name + '.' + id_suffix;
var chart = this.charts[id];
var dims, len, x, i;
if(typeof chart === 'undefined') {
chart = this.chartFromMembersCreate(service, obj, id, title_suffix, units, family, context, type, priority, algorithm, multiplier, divisor);
if(chart === null) return false;
}
else {
// check if we need to re-generate the chart
dims = Object.keys(obj);
len = dims.length;
for(i = 0; i < len ;i++) {
x = dims[i];
if(typeof(chart.dimensions[x]) === 'undefined') {
chart = this.chartFromMembersCreate(service, obj, id, title_suffix, units, family, context, type, priority, algorithm, multiplier, divisor);
if(chart === null) return false;
break;
}
}
}
service.begin(chart);
var found = 0;
dims = Object.keys(obj);
len = dims.length;
for(i = 0; i < len ;i++) {
x = dims[i];
if(typeof(chart.dimensions[x]) !== 'undefined') {
found++;
service.set(x, obj[x]);
}
}
service.end();
return (found > 0);
},
// an index to map values to different charts
lookups: {
nsstats: {},
resolver_stats: {},
numfetch: {}
},
// transform the XML response of bind
// to the JSON response of bind
xml2js: function(service, data_xml) {
var d = XML.parse(data_xml);
if(d === null) return null;
var a, aa, alen, alen2;
var data = {};
var len = d.server.counters.length;
while(len--) {
a = d.server.counters[len];
if(typeof a.counter === 'undefined') continue;
if(a.type === 'opcode') a.type = 'opcodes';
else if(a.type === 'qtype') a.type = 'qtypes';
else if(a.type === 'nsstat') a.type = 'nsstats';
aa = data[a.type] = {};
alen = 0;
alen2 = a.counter.length;
while(alen < alen2) {
aa[a.counter[alen].name] = parseInt(a.counter[alen]._Data, 10);
alen++;
}
}
data.views = {};
var vlen = d.views.view.length;
while(vlen--) {
var vname = d.views.view[vlen].name;
data.views[vname] = { resolver: {} };
len = d.views.view[vlen].counters.length;
while(len--) {
a = d.views.view[vlen].counters[len];
if(typeof a.counter === 'undefined') continue;
if(a.type === 'resstats') a.type = 'stats';
else if(a.type === 'resqtype') a.type = 'qtypes';
else if(a.type === 'adbstat') a.type = 'adb';
aa = data.views[vname].resolver[a.type] = {};
alen = 0;
alen2 = a.counter.length;
while(alen < alen2) {
aa[a.counter[alen].name] = parseInt(a.counter[alen]._Data, 10);
alen++;
}
}
}
return data;
},
processResponse: function(service, data) {
if(data !== null) {
var r, x, look, id, chart, keys, len;
// parse XML or JSON
// pepending on the URL given
if(service.request.path.match(/^\/xml/) !== null)
r = named.xml2js(service, data);
else
r = JSON.parse(data);
if(typeof r === 'undefined' || r === null) {
service.error("Cannot parse these data: " + data.toString());
return;
}
if(service.added !== true)
service.commit();
if(typeof r.nsstats !== 'undefined') {
// we split the nsstats object to several others
var global_requests = {}, global_requests_enable = false;
var global_failures = {}, global_failures_enable = false;
var global_failures_detail = {}, global_failures_detail_enable = false;
var global_updates = {}, global_updates_enable = false;
var protocol_queries = {}, protocol_queries_enable = false;
var global_queries = {}, global_queries_enable = false;
var global_queries_success = {}, global_queries_success_enable = false;
var default_enable = false;
var RecursClients = 0;
// RecursClients is an absolute value
if(typeof r.nsstats['RecursClients'] !== 'undefined') {
RecursClients = r.nsstats['RecursClients'];
delete r.nsstats['RecursClients'];
}
keys = Object.keys(r.nsstats);
len = keys.length;
while(len--) {
x = keys[len];
// we maintain an index of the values found
// mapping them to objects splitted
look = named.lookups.nsstats[x];
if(typeof look === 'undefined') {
// a new value, not found in the index
// index it:
if(x === 'Requestv4') {
named.lookups.nsstats[x] = {
name: 'IPv4',
type: 'global_requests'
};
}
else if(x === 'Requestv6') {
named.lookups.nsstats[x] = {
name: 'IPv6',
type: 'global_requests'
};
}
else if(x === 'QryFailure') {
named.lookups.nsstats[x] = {
name: 'failures',
type: 'global_failures'
};
}
else if(x === 'QryUDP') {
named.lookups.nsstats[x] = {
name: 'UDP',
type: 'protocol_queries'
};
}
else if(x === 'QryTCP') {
named.lookups.nsstats[x] = {
name: 'TCP',
type: 'protocol_queries'
};
}
else if(x === 'QrySuccess') {
named.lookups.nsstats[x] = {
name: 'queries',
type: 'global_queries_success'
};
}
else if(x.match(/QryRej$/) !== null) {
named.lookups.nsstats[x] = {
name: x,
type: 'global_failures_detail'
};
}
else if(x.match(/^Qry/) !== null) {
named.lookups.nsstats[x] = {
name: x,
type: 'global_queries'
};
}
else if(x.match(/^Update/) !== null) {
named.lookups.nsstats[x] = {
name: x,
type: 'global_updates'
};
}
else {
// values not mapped, will remain
// in the default map
named.lookups.nsstats[x] = {
name: x,
type: 'default'
};
}
look = named.lookups.nsstats[x];
// netdata.error('lookup nsstats value: ' + x + ' >>> ' + named.lookups.nsstats[x].type);
}
switch(look.type) {
case 'global_requests': global_requests[look.name] = r.nsstats[x]; delete r.nsstats[x]; global_requests_enable = true; break;
case 'global_queries': global_queries[look.name] = r.nsstats[x]; delete r.nsstats[x]; global_queries_enable = true; break;
case 'global_queries_success': global_queries_success[look.name] = r.nsstats[x]; delete r.nsstats[x]; global_queries_success_enable = true; break;
case 'global_updates': global_updates[look.name] = r.nsstats[x]; delete r.nsstats[x]; global_updates_enable = true; break;
case 'protocol_queries': protocol_queries[look.name] = r.nsstats[x]; delete r.nsstats[x]; protocol_queries_enable = true; break;
case 'global_failures': global_failures[look.name] = r.nsstats[x]; delete r.nsstats[x]; global_failures_enable = true; break;
case 'global_failures_detail': global_failures_detail[look.name] = r.nsstats[x]; delete r.nsstats[x]; global_failures_detail_enable = true; break;
default: default_enable = true; break;
}
}
if(global_requests_enable === true)
service.module.chartFromMembers(service, global_requests, 'received_requests', 'Bind, Global Received Requests by IP version', 'requests/s', 'requests', 'named.requests', netdata.chartTypes.stacked, named.base_priority + 1, netdata.chartAlgorithms.incremental, 1, 1);
if(global_queries_success_enable === true)
service.module.chartFromMembers(service, global_queries_success, 'global_queries_success', 'Bind, Global Successful Queries', 'queries/s', 'queries', 'named.queries_succcess', netdata.chartTypes.line, named.base_priority + 2, netdata.chartAlgorithms.incremental, 1, 1);
if(protocol_queries_enable === true)
service.module.chartFromMembers(service, protocol_queries, 'protocols_queries', 'Bind, Global Queries by IP Protocol', 'queries/s', 'queries', 'named.protocol_queries', netdata.chartTypes.stacked, named.base_priority + 3, netdata.chartAlgorithms.incremental, 1, 1);
if(global_queries_enable === true)
service.module.chartFromMembers(service, global_queries, 'global_queries', 'Bind, Global Queries Analysis', 'queries/s', 'queries', 'named.global_queries', netdata.chartTypes.stacked, named.base_priority + 4, netdata.chartAlgorithms.incremental, 1, 1);
if(global_updates_enable === true)
service.module.chartFromMembers(service, global_updates, 'received_updates', 'Bind, Global Received Updates', 'updates/s', 'updates', 'named.global_updates', netdata.chartTypes.stacked, named.base_priority + 5, netdata.chartAlgorithms.incremental, 1, 1);
if(global_failures_enable === true)
service.module.chartFromMembers(service, global_failures, 'query_failures', 'Bind, Global Query Failures', 'failures/s', 'failures', 'named.global_failures', netdata.chartTypes.line, named.base_priority + 6, netdata.chartAlgorithms.incremental, 1, 1);
if(global_failures_detail_enable === true)
service.module.chartFromMembers(service, global_failures_detail, 'query_failures_detail', 'Bind, Global Query Failures Analysis', 'failures/s', 'failures', 'named.global_failures_detail', netdata.chartTypes.stacked, named.base_priority + 7, netdata.chartAlgorithms.incremental, 1, 1);
if(default_enable === true)
service.module.chartFromMembers(service, r.nsstats, 'nsstats', 'Bind, Other Global Server Statistics', 'operations/s', 'other', 'named.nsstats', netdata.chartTypes.line, named.base_priority + 8, netdata.chartAlgorithms.incremental, 1, 1);
// RecursClients chart
id = 'named_' + service.name + '.recursive_clients';
chart = named.charts[id];
if(typeof chart === 'undefined') {
chart = {
id: id, // the unique id of the chart
name: '', // the unique name of the chart
title: service.name + ' Bind, Current Recursive Clients', // the title of the chart
units: 'clients', // the units of the chart dimensions
family: 'clients', // the family of the chart
context: 'named.recursive_clients', // the context of the chart
type: netdata.chartTypes.line, // the type of the chart
priority: named.base_priority + 1, // the priority relative to others in the same family
update_every: service.update_every, // the expected update frequency of the chart
dimensions: {
'clients': {
id: 'clients', // the unique id of the dimension
name: '', // the name of the dimension
algorithm: netdata.chartAlgorithms.absolute,// the id of the netdata algorithm
multiplier: 1, // the multiplier
divisor: 1, // the divisor
hidden: false // is hidden (boolean)
}
}
};
chart = service.chart(id, chart);
named.charts[id] = chart;
}
service.begin(chart);
service.set('clients', RecursClients);
service.end();
}
if(typeof r.opcodes !== 'undefined')
service.module.chartFromMembers(service, r.opcodes, 'in_opcodes', 'Bind, Global Incoming Requests by OpCode', 'requests/s', 'requests', 'named.in_opcodes', netdata.chartTypes.stacked, named.base_priority + 9, netdata.chartAlgorithms.incremental, 1, 1);
if(typeof r.qtypes !== 'undefined')
service.module.chartFromMembers(service, r.qtypes, 'in_qtypes', 'Bind, Global Incoming Requests by Query Type', 'requests/s', 'requests', 'named.in_qtypes', netdata.chartTypes.stacked, named.base_priority + 10, netdata.chartAlgorithms.incremental, 1, 1);
if(typeof r.sockstats !== 'undefined')
service.module.chartFromMembers(service, r.sockstats, 'in_sockstats', 'Bind, Global Socket Statistics', 'operations/s', 'sockets', 'named.in_sockstats', netdata.chartTypes.line, named.base_priority + 11, netdata.chartAlgorithms.incremental, 1, 1);
if(typeof r.views !== 'undefined') {
keys = Object.keys(r.views);
len = keys.length;
while(len--) {
x = keys[len];
var resolver = r.views[x].resolver;
if(typeof resolver !== 'undefined') {
if(typeof resolver.stats !== 'undefined') {
var NumFetch = 0;
var key = service.name + '.' + x;
var rtt = {}, rtt_enable = false;
default_enable = false;
// NumFetch is an absolute value
if(typeof resolver.stats['NumFetch'] !== 'undefined') {
named.lookups.numfetch[key] = true;
NumFetch = resolver.stats['NumFetch'];
delete resolver.stats['NumFetch'];
}
if(typeof resolver.stats['BucketSize'] !== 'undefined') {
delete resolver.stats['BucketSize'];
}
// split the QryRTT* from the main chart
var ykeys = Object.keys(resolver.stats);
var ylen = ykeys.length;
while(ylen--) {
var y = ykeys[ylen];
// we maintain an index of the values found
// mapping them to objects splitted
look = named.lookups.resolver_stats[y];
if(typeof look === 'undefined') {
if(y.match(/^QryRTT/) !== null) {
named.lookups.resolver_stats[y] = {
name: y,
type: 'rtt'
};
}
else {
named.lookups.resolver_stats[y] = {
name: y,
type: 'default'
};
}
look = named.lookups.resolver_stats[y];
// netdata.error('lookup resolver stats value: ' + y + ' >>> ' + look.type);
}
switch(look.type) {
case 'rtt': rtt[look.name] = resolver.stats[y]; delete resolver.stats[y]; rtt_enable = true; break;
default: default_enable = true; break;
}
}
if(rtt_enable)
service.module.chartFromMembers(service, rtt, 'view_resolver_rtt_' + x, 'Bind, ' + x + ' View, Resolver Round Trip Timings', 'queries/s', 'view_' + x, 'named.resolver_rtt', netdata.chartTypes.stacked, named.base_priority + 12, netdata.chartAlgorithms.incremental, 1, 1);
if(default_enable)
service.module.chartFromMembers(service, resolver.stats, 'view_resolver_stats_' + x, 'Bind, ' + x + ' View, Resolver Statistics', 'operations/s', 'view_' + x, 'named.resolver_stats', netdata.chartTypes.line, named.base_priority + 13, netdata.chartAlgorithms.incremental, 1, 1);
// NumFetch chart
if(typeof named.lookups.numfetch[key] !== 'undefined') {
id = 'named_' + service.name + '.view_resolver_numfetch_' + x;
chart = named.charts[id];
if(typeof chart === 'undefined') {
chart = {
id: id, // the unique id of the chart
name: '', // the unique name of the chart
title: service.name + ' Bind, ' + x + ' View, Resolver Active Queries', // the title of the chart
units: 'queries', // the units of the chart dimensions
family: 'view_' + x, // the family of the chart
context: 'named.resolver_active_queries', // the context of the chart
type: netdata.chartTypes.line, // the type of the chart
priority: named.base_priority + 1001, // the priority relative to others in the same family
update_every: service.update_every, // the expected update frequency of the chart
dimensions: {
'queries': {
id: 'queries', // the unique id of the dimension
name: '', // the name of the dimension
algorithm: netdata.chartAlgorithms.absolute,// the id of the netdata algorithm
multiplier: 1, // the multiplier
divisor: 1, // the divisor
hidden: false // is hidden (boolean)
}
}
};
chart = service.chart(id, chart);
named.charts[id] = chart;
}
service.begin(chart);
service.set('queries', NumFetch);
service.end();
}
}
}
if(typeof resolver.qtypes !== 'undefined')
service.module.chartFromMembers(service, resolver.qtypes, 'view_resolver_qtypes_' + x, 'Bind, ' + x + ' View, Requests by Query Type', 'requests/s', 'view_' + x, 'named.resolver_qtypes', netdata.chartTypes.stacked, named.base_priority + 14, netdata.chartAlgorithms.incremental, 1, 1);
//if(typeof resolver.cache !== 'undefined')
// service.module.chartFromMembers(service, resolver.cache, 'view_resolver_cache_' + x, 'Bind, ' + x + ' View, Cache Entries', 'entries', 'view_' + x, 'named.resolver_cache', netdata.chartTypes.stacked, named.base_priority + 15, netdata.chartAlgorithms.absolute, 1, 1);
if(typeof resolver.cachestats['CacheHits'] !== 'undefined' && resolver.cachestats['CacheHits'] > 0) {
id = 'named_' + service.name + '.view_resolver_cachehits_' + x;
chart = named.charts[id];
if(typeof chart === 'undefined') {
chart = {
id: id, // the unique id of the chart
name: '', // the unique name of the chart
title: service.name + ' Bind, ' + x + ' View, Resolver Cache Hits', // the title of the chart
units: 'operations/s', // the units of the chart dimensions
family: 'view_' + x, // the family of the chart
context: 'named.resolver_cache_hits', // the context of the chart
type: netdata.chartTypes.area, // the type of the chart
priority: named.base_priority + 1100, // the priority relative to others in the same family
update_every: service.update_every, // the expected update frequency of the chart
dimensions: {
'CacheHits': {
id: 'CacheHits', // the unique id of the dimension
name: 'hits', // the name of the dimension
algorithm: netdata.chartAlgorithms.incremental,// the id of the netdata algorithm
multiplier: 1, // the multiplier
divisor: 1, // the divisor
hidden: false // is hidden (boolean)
},
'CacheMisses': {
id: 'CacheMisses', // the unique id of the dimension
name: 'misses', // the name of the dimension
algorithm: netdata.chartAlgorithms.incremental,// the id of the netdata algorithm
multiplier: -1, // the multiplier
divisor: 1, // the divisor
hidden: false // is hidden (boolean)
}
}
};
chart = service.chart(id, chart);
named.charts[id] = chart;
}
service.begin(chart);
service.set('CacheHits', resolver.cachestats['CacheHits']);
service.set('CacheMisses', resolver.cachestats['CacheMisses']);
service.end();
}
// this is wrong, it contains many types of info:
// 1. CacheHits, CacheMisses - incremental (added above)
// 2. QueryHits, QueryMisses - incremental
// 3. DeleteLRU, DeleteTTL - incremental
// 4. CacheNodes, CacheBuckets - absolute
// 5. TreeMemTotal, TreeMemInUse - absolute
// 6. HeapMemMax, HeapMemTotal, HeapMemInUse - absolute
//if(typeof resolver.cachestats !== 'undefined')
// service.module.chartFromMembers(service, resolver.cachestats, 'view_resolver_cachestats_' + x, 'Bind, ' + x + ' View, Cache Statistics', 'requests/s', 'view_' + x, 'named.resolver_cache_stats', netdata.chartTypes.line, named.base_priority + 1001, netdata.chartAlgorithms.incremental, 1, 1);
//if(typeof resolver.adb !== 'undefined')
// service.module.chartFromMembers(service, resolver.adb, 'view_resolver_adb_' + x, 'Bind, ' + x + ' View, ADB Statistics', 'entries', 'view_' + x, 'named.resolver_adb', netdata.chartTypes.line, named.base_priority + 1002, netdata.chartAlgorithms.absolute, 1, 1);
}
}
}
},
// module.serviceExecute()
// this function is called only from this module
// its purpose is to prepare the request and call
// netdata.serviceExecute()
serviceExecute: function(name, a_url, update_every) {
if(netdata.options.DEBUG === true) netdata.debug(this.name + ': ' + name + ': url: ' + a_url + ', update_every: ' + update_every);
var service = netdata.service({
name: name,
request: netdata.requestFromURL(a_url),
update_every: update_every,
module: this
});
service.execute(this.processResponse);
},
configure: function(config) {
var added = 0;
if(this.enable_autodetect === true) {
this.serviceExecute('local', 'http://localhost:8888/json/v1/server', this.update_every);
added++;
}
if(typeof(config.servers) !== 'undefined') {
var len = config.servers.length;
while(len--) {
if(typeof config.servers[len].update_every === 'undefined')
config.servers[len].update_every = this.update_every;
this.serviceExecute(config.servers[len].name, config.servers[len].url, config.servers[len].update_every);
added++;
}
}
return added;
},
// module.update()
// this is called repeatidly to collect data, by calling
// netdata.serviceExecute()
update: function(service, callback) {
service.execute(function(serv, data) {
service.module.processResponse(serv, data);
callback();
});
}
};
module.exports = named;