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Diffstat (limited to 'node.d/snmp.node.js')
| -rw-r--r-- | node.d/snmp.node.js | 513 |
1 files changed, 0 insertions, 513 deletions
diff --git a/node.d/snmp.node.js b/node.d/snmp.node.js deleted file mode 100644 index 3e702795..00000000 --- a/node.d/snmp.node.js +++ /dev/null @@ -1,513 +0,0 @@ -'use strict'; -// netdata snmp module -// This program will connect to one or more SNMP Agents -// - -// example configuration in /etc/netdata/node.d/snmp.conf -/* -{ - "enable_autodetect": false, - "update_every": 5, - "max_request_size": 50, - "servers": [ - { - "hostname": "10.11.12.8", - "community": "public", - "update_every": 10, - "max_request_size": 50, - "options": { "timeout": 10000 }, - "charts": { - "snmp_switch.bandwidth_port1": { - "title": "Switch Bandwidth for port 1", - "units": "kilobits/s", - "type": "area", - "priority": 1, - "dimensions": { - "in": { - "oid": ".1.3.6.1.2.1.2.2.1.10.1", - "algorithm": "incremental", - "multiplier": 8, - "divisor": 1024, - "offset": 0 - }, - "out": { - "oid": ".1.3.6.1.2.1.2.2.1.16.1", - "algorithm": "incremental", - "multiplier": -8, - "divisor": 1024, - "offset": 0 - } - } - }, - "snmp_switch.bandwidth_port2": { - "title": "Switch Bandwidth for port 2", - "units": "kilobits/s", - "type": "area", - "priority": 1, - "dimensions": { - "in": { - "oid": ".1.3.6.1.2.1.2.2.1.10.2", - "algorithm": "incremental", - "multiplier": 8, - "divisor": 1024, - "offset": 0 - }, - "out": { - "oid": ".1.3.6.1.2.1.2.2.1.16.2", - "algorithm": "incremental", - "multiplier": -8, - "divisor": 1024, - "offset": 0 - } - } - } - } - } - ] -} -*/ - -// You can also give ranges of charts like the following. -// This will append 1-24 to id, title, oid (on each dimension) -// so that 24 charts will be created. -/* -{ - "enable_autodetect": false, - "update_every": 10, - "max_request_size": 50, - "servers": [ - { - "hostname": "10.11.12.8", - "community": "public", - "update_every": 10, - "max_request_size": 50, - "options": { "timeout": 20000 }, - "charts": { - "snmp_switch.bandwidth_port": { - "title": "Switch Bandwidth for port ", - "units": "kilobits/s", - "type": "area", - "priority": 1, - "multiply_range": [ 1, 24 ], - "dimensions": { - "in": { - "oid": ".1.3.6.1.2.1.2.2.1.10.", - "algorithm": "incremental", - "multiplier": 8, - "divisor": 1024, - "offset": 0 - }, - "out": { - "oid": ".1.3.6.1.2.1.2.2.1.16.", - "algorithm": "incremental", - "multiplier": -8, - "divisor": 1024, - "offset": 0 - } - } - } - } - } - ] -} -*/ - -var net_snmp = require('net-snmp'); -var extend = require('extend'); -var netdata = require('netdata'); - -if(netdata.options.DEBUG === true) netdata.debug('loaded', __filename, ' plugin'); - -netdata.processors.snmp = { - name: 'snmp', - - fixoid: function(oid) { - if(typeof oid !== 'string') - return oid; - - if(oid.charAt(0) === '.') - return oid.substring(1, oid.length); - - return oid; - }, - - prepare: function(service) { - var __DEBUG = netdata.options.DEBUG; - - if(typeof service.snmp_oids === 'undefined' || service.snmp_oids === null || service.snmp_oids.length === 0) { - // this is the first time we see this service - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': preparing ' + this.name + ' OIDs'); - - // build an index of all OIDs - service.snmp_oids_index = {}; - var chart_keys = Object.keys(service.request.charts); - var chart_keys_len = chart_keys.length; - while(chart_keys_len--) { - var c = chart_keys[chart_keys_len]; - var chart = service.request.charts[c]; - - // for each chart - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': indexing ' + this.name + ' chart: ' + c); - - if(typeof chart.titleoid !== 'undefined') { - service.snmp_oids_index[this.fixoid(chart.titleoid)] = { - type: 'title', - link: chart - }; - } - - var dim_keys = Object.keys(chart.dimensions); - var dim_keys_len = dim_keys.length; - while(dim_keys_len--) { - var d = dim_keys[dim_keys_len]; - var dim = chart.dimensions[d]; - - // for each dimension in the chart - - var oid = this.fixoid(dim.oid); - var oidname = this.fixoid(dim.oidname); - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': indexing ' + this.name + ' chart: ' + c + ', dimension: ' + d + ', OID: ' + oid + ", OID name: " + oidname); - - // link it to the point we need to set the value to - service.snmp_oids_index[oid] = { - type: 'value', - link: dim - }; - - if(typeof oidname !== 'undefined') - service.snmp_oids_index[oidname] = { - type: 'name', - link: dim - }; - - // and set the value to null - dim.value = null; - } - } - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': indexed ' + this.name + ' OIDs: ' + netdata.stringify(service.snmp_oids_index)); - - // now create the array of OIDs needed by net-snmp - service.snmp_oids = Object.keys(service.snmp_oids_index); - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': final list of ' + this.name + ' OIDs: ' + netdata.stringify(service.snmp_oids)); - - service.snmp_oids_cleaned = 0; - } - else if(service.snmp_oids_cleaned === 0) { - service.snmp_oids_cleaned = 1; - - // the second time, keep only values - - service.snmp_oids = new Array(); - var oid_keys = Object.keys(service.snmp_oids_index); - var oid_keys_len = oid_keys.length; - while(oid_keys_len--) { - if (service.snmp_oids_index[oid_keys[oid_keys_len]].type === 'value') - service.snmp_oids.push(oid_keys[oid_keys_len]); - } - } - }, - - getdata: function(service, index, ok, failed, callback) { - var __DEBUG = netdata.options.DEBUG; - var that = this; - - if(index >= service.snmp_oids.length) { - callback((ok > 0)?{ ok: ok, failed: failed }:null); - return; - } - - var slice; - if(service.snmp_oids.length <= service.request.max_request_size) { - slice = service.snmp_oids; - index = service.snmp_oids.length; - } - else if(service.snmp_oids.length - index <= service.request.max_request_size) { - slice = service.snmp_oids.slice(index, service.snmp_oids.length); - index = service.snmp_oids.length; - } - else { - slice = service.snmp_oids.slice(index, index + service.request.max_request_size); - index += service.request.max_request_size; - } - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': making ' + slice.length + ' entries request, max is: ' + service.request.max_request_size); - - service.snmp_session.get(slice, function(error, varbinds) { - if(error) { - service.error('Received error = ' + netdata.stringify(error) + ' varbinds = ' + netdata.stringify(varbinds)); - - // make all values null - var len = slice.length; - while(len--) - service.snmp_oids_index[slice[len]].value = null; - } - else { - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': got valid ' + service.module.name + ' response: ' + netdata.stringify(varbinds)); - - var varbinds_len = varbinds.length; - for(var i = 0; i < varbinds_len ; i++) { - var value = null; - - if(net_snmp.isVarbindError(varbinds[i])) { - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': failed ' + service.module.name + ' get for OIDs ' + varbinds[i].oid); - - service.error('OID ' + varbinds[i].oid + ' gave error: ' + snmp.varbindError(varbinds[i])); - value = null; - failed++; - } - else { - // test fom Counter64 - // varbinds[i].type = net_snmp.ObjectType.Counter64; - // varbinds[i].value = new Buffer([0x34, 0x49, 0x2e, 0xdc, 0xd1]); - - switch(varbinds[i].type) { - case net_snmp.ObjectType.OctetString: - if(service.snmp_oids_index[varbinds[i].oid].type !== 'title') - // parse floating point values, exposed as strings - value = parseFloat(varbinds[i].value) * 1000; - if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as float in string)"); - else - // just use the string - value = varbinds[i].value; - if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as string)"); - break; - - case net_snmp.ObjectType.Counter64: - // copy the buffer - value = '0x' + varbinds[i].value.toString('hex'); - if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as buffer)"); - break; - - case net_snmp.ObjectType.Integer: - case net_snmp.ObjectType.Counter: - case net_snmp.ObjectType.Gauge: - default: - value = varbinds[i].value; - if(__DEBUG === true) netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + ", ObjectType " + net_snmp.ObjectType[varbinds[i].type] + " (" + netdata.stringify(varbinds[i].type) + "), typeof(" + typeof(varbinds[i].value) + "), in JSON: " + netdata.stringify(varbinds[i].value) + ", value = " + value.toString() + " (parsed as number)"); - break; - } - - ok++; - } - - if(value !== null) { - switch(service.snmp_oids_index[varbinds[i].oid].type) { - case 'title': service.snmp_oids_index[varbinds[i].oid].link.title += ' ' + value; break; - case 'name' : service.snmp_oids_index[varbinds[i].oid].link.name = value; break; - case 'value': service.snmp_oids_index[varbinds[i].oid].link.value = value; break; - } - } - } - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': finished ' + service.module.name + ' with ' + ok + ' successful and ' + failed + ' failed values'); - } - that.getdata(service, index, ok, failed, callback); - }); - }, - - process: function(service, callback) { - var __DEBUG = netdata.options.DEBUG; - - this.prepare(service); - - if(service.snmp_oids.length === 0) { - // no OIDs found for this service - - if(__DEBUG === true) - service.error('no OIDs to process.'); - - callback(null); - return; - } - - if(typeof service.snmp_session === 'undefined' || service.snmp_session === null) { - // no SNMP session has been created for this service - // the SNMP session is just the initialization of NET-SNMP - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': opening ' + this.name + ' session on ' + service.request.hostname + ' community ' + service.request.community + ' options ' + netdata.stringify(service.request.options)); - - // create the SNMP session - service.snmp_session = net_snmp.createSession (service.request.hostname, service.request.community, service.request.options); - - if(__DEBUG === true) - netdata.debug(service.module.name + ': ' + service.name + ': got ' + this.name + ' session: ' + netdata.stringify(service.snmp_session)); - - // if we later need traps, this is how to do it: - //service.snmp_session.trap(net_snmp.TrapType.LinkDown, function(error) { - // if(error) console.error('trap error: ' + netdata.stringify(error)); - //}); - } - - // do it, get the SNMP values for the sessions we need - this.getdata(service, 0, 0, 0, callback); - } -}; - -var snmp = { - name: __filename, - enable_autodetect: true, - update_every: 1, - base_priority: 50000, - - charts: {}, - - processResponse: function(service, data) { - if(data !== null) { - if(service.added !== true) - service.commit(); - - var chart_keys = Object.keys(service.request.charts); - var chart_keys_len = chart_keys.length; - for(var i = 0; i < chart_keys_len; i++) { - var c = chart_keys[i]; - - var chart = snmp.charts[c]; - if(typeof chart === 'undefined') { - chart = service.chart(c, service.request.charts[c]); - snmp.charts[c] = chart; - } - - service.begin(chart); - - var dimensions = service.request.charts[c].dimensions; - var dim_keys = Object.keys(dimensions); - var dim_keys_len = dim_keys.length; - for(var j = 0; j < dim_keys_len ; j++) { - var d = dim_keys[j]; - - if (dimensions[d].value !== null) { - if(typeof dimensions[d].offset === 'number') - service.set(d, dimensions[d].value + dimensions[d].offset); - else - service.set(d, dimensions[d].value); - } - } - - service.end(); - } - } - }, - - // module.serviceExecute() - // this function is called only from this module - // its purpose is to prepare the request and call - // netdata.serviceExecute() - serviceExecute: function(conf) { - var __DEBUG = netdata.options.DEBUG; - - if(__DEBUG === true) - netdata.debug(this.name + ': snmp hostname: ' + conf.hostname + ', update_every: ' + conf.update_every); - - var service = netdata.service({ - name: conf.hostname, - request: conf, - update_every: conf.update_every, - module: this, - processor: netdata.processors.snmp - }); - - // multiply the charts, if required - var chart_keys = Object.keys(service.request.charts); - var chart_keys_len = chart_keys.length; - for( var i = 0; i < chart_keys_len ; i++ ) { - var c = chart_keys[i]; - var service_request_chart = service.request.charts[c]; - - if(__DEBUG === true) - netdata.debug(this.name + ': snmp hostname: ' + conf.hostname + ', examining chart: ' + c); - - if(typeof service_request_chart.update_every === 'undefined') - service_request_chart.update_every = service.update_every; - - if(typeof service_request_chart.multiply_range !== 'undefined') { - var from = service_request_chart.multiply_range[0]; - var to = service_request_chart.multiply_range[1]; - var prio = service_request_chart.priority || 1; - - if(prio < snmp.base_priority) prio += snmp.base_priority; - - while(from <= to) { - var id = c + from.toString(); - var chart = extend(true, {}, service_request_chart); - chart.title += from.toString(); - - if(typeof chart.titleoid !== 'undefined') - chart.titleoid += from.toString(); - - chart.priority = prio++; - - var dim_keys = Object.keys(chart.dimensions); - var dim_keys_len = dim_keys.length; - for(var j = 0; j < dim_keys_len ; j++) { - var d = dim_keys[j]; - - chart.dimensions[d].oid += from.toString(); - - if(typeof chart.dimensions[d].oidname !== 'undefined') - chart.dimensions[d].oidname += from.toString(); - } - service.request.charts[id] = chart; - from++; - } - - delete service.request.charts[c]; - } - else { - if(service.request.charts[c].priority < snmp.base_priority) - service.request.charts[c].priority += snmp.base_priority; - } - } - - service.execute(this.processResponse); - }, - - configure: function(config) { - var added = 0; - - if(typeof config.max_request_size === 'undefined') - config.max_request_size = 50; - - 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; - - if(typeof config.servers[len].max_request_size === 'undefined') - config.servers[len].max_request_size = config.max_request_size; - - this.serviceExecute(config.servers[len]); - added++; - } - } - - return added; - }, - - // module.update() - // this is called repeatidly to collect data, by calling - // service.execute() - update: function(service, callback) { - service.execute(function(serv, data) { - service.module.processResponse(serv, data); - callback(); - }); - } -}; - -module.exports = snmp; |