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authorDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
commit1e6c93250172946eeb38e94a92a1fd12c9d3011e (patch)
tree8ca5e16dfc7ad6b3bf2738ca0a48408a950f8f7e /collectors/node.d.plugin/named/named.node.js
parentUpdate watch file (diff)
downloadnetdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.tar.xz
netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.zip
Merging upstream version 1.11.0+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'collectors/node.d.plugin/named/named.node.js')
-rw-r--r--collectors/node.d.plugin/named/named.node.js610
1 files changed, 610 insertions, 0 deletions
diff --git a/collectors/node.d.plugin/named/named.node.js b/collectors/node.d.plugin/named/named.node.js
new file mode 100644
index 000000000..d13c608cb
--- /dev/null
+++ b/collectors/node.d.plugin/named/named.node.js
@@ -0,0 +1,610 @@
+'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;