Merge tag 'upstream/1.3.0+dfsg'

Upstream version 1.3.0+dfsg

1 files changed, 405 insertions, 405 deletions

diff --git a/node.d/snmp.node.js b/node.d/snmp.node.js
index 21615f623..ddc898527 100644
--- a/node.d/snmp.node.js
+++ b/node.d/snmp.node.js
@@ -5,60 +5,60 @@
 // example configuration in /etc/netdata/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
-						},
-						"out": {
-							"oid": ".1.3.6.1.2.1.2.2.1.16.1",
-							"algorithm": "incremental",
-							"multiplier": -8,
-							"divisor": 1024
-						}
-					}
-				},
-				"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
-						},
-						"out": {
-							"oid": ".1.3.6.1.2.1.2.2.1.16.2",
-							"algorithm": "incremental",
-							"multiplier": -8,
-							"divisor": 1024
-						}
-					}
-				}
-			}
-		}
-	]
+    "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
+                        },
+                        "out": {
+                            "oid": ".1.3.6.1.2.1.2.2.1.16.1",
+                            "algorithm": "incremental",
+                            "multiplier": -8,
+                            "divisor": 1024
+                        }
+                    }
+                },
+                "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
+                        },
+                        "out": {
+                            "oid": ".1.3.6.1.2.1.2.2.1.16.2",
+                            "algorithm": "incremental",
+                            "multiplier": -8,
+                            "divisor": 1024
+                        }
+                    }
+                }
+            }
+        }
+    ]
 }
 */
 
@@ -67,41 +67,41 @@
 // 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
-						},
-						"out": {
-							"oid": ".1.3.6.1.2.1.2.2.1.16.",
-							"algorithm": "incremental",
-							"multiplier": -8,
-							"divisor": 1024
-						}
-					}
-				}
-			}
-		}
-	]
+    "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
+                        },
+                        "out": {
+                            "oid": ".1.3.6.1.2.1.2.2.1.16.",
+                            "algorithm": "incremental",
+                            "multiplier": -8,
+                            "divisor": 1024
+                        }
+                    }
+                }
+            }
+        }
+    ]
 }
 */
 
@@ -112,325 +112,325 @@ 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) {
-		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(netdata.options.DEBUG === true)
-				netdata.debug(service.module.name + ': ' + service.name + ': preparing ' + this.name + ' OIDs');
-
-			// build an index of all OIDs
-			service.snmp_oids_index = {};
-			for(var c in service.request.charts) {
-				// for each chart
-
-				if(netdata.options.DEBUG === true)
-					netdata.debug(service.module.name + ': ' + service.name + ': indexing ' + this.name + ' chart: ' + c);
-
-				if(typeof service.request.charts[c].titleoid !== 'undefined') {
-						service.snmp_oids_index[this.fixoid(service.request.charts[c].titleoid)] = {
-							type: 'title',
-							link: service.request.charts[c]
-						};
-					}
-
-				for(var d in service.request.charts[c].dimensions) {
-					// for each dimension in the chart
-
-					var oid = this.fixoid(service.request.charts[c].dimensions[d].oid);
-					var oidname = this.fixoid(service.request.charts[c].dimensions[d].oidname);
-					
-					if(netdata.options.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: service.request.charts[c].dimensions[d]
-					};
-
-					if(typeof oidname !== 'undefined')
-						service.snmp_oids_index[oidname] = {
-							type: 'name',
-							link: service.request.charts[c].dimensions[d]
-						};
-
-					// and set the value to null
-					service.request.charts[c].dimensions[d].value = null;
-				}
-			}
-
-			if(netdata.options.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 = new Array();
-			for(var o in service.snmp_oids_index)
-				service.snmp_oids.push(o);
-
-			if(netdata.options.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();
-			for(var o in service.snmp_oids_index)
-				if(service.snmp_oids_index[o].type === 'value')
-					service.snmp_oids.push(o);
-		}
-	},
-
-	getdata: function(service, index, ok, failed, callback) {
-		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(netdata.options.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(netdata.options.DEBUG === true)
-					netdata.debug(service.module.name + ': ' + service.name + ': got valid ' + service.module.name + ' response: ' + netdata.stringify(varbinds));
-
-				for(var i = 0; i < varbinds.length; i++) {
-					var value = null;
-
-					if(net_snmp.isVarbindError(varbinds[i])) {
-						if(netdata.options.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 {
-						if(netdata.options.DEBUG === true)
-							netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + " = " + varbinds[i].value);
-
-						value = varbinds[i].value;
-						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(netdata.options.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) {
-		this.prepare(service);
-
-		if(service.snmp_oids.length === 0) {
-			// no OIDs found for this service
-
-			if(netdata.options.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(netdata.options.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(netdata.options.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);
-	}
+    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) {
+        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(netdata.options.DEBUG === true)
+                netdata.debug(service.module.name + ': ' + service.name + ': preparing ' + this.name + ' OIDs');
+
+            // build an index of all OIDs
+            service.snmp_oids_index = {};
+            for(var c in service.request.charts) {
+                // for each chart
+
+                if(netdata.options.DEBUG === true)
+                    netdata.debug(service.module.name + ': ' + service.name + ': indexing ' + this.name + ' chart: ' + c);
+
+                if(typeof service.request.charts[c].titleoid !== 'undefined') {
+                        service.snmp_oids_index[this.fixoid(service.request.charts[c].titleoid)] = {
+                            type: 'title',
+                            link: service.request.charts[c]
+                        };
+                    }
+
+                for(var d in service.request.charts[c].dimensions) {
+                    // for each dimension in the chart
+
+                    var oid = this.fixoid(service.request.charts[c].dimensions[d].oid);
+                    var oidname = this.fixoid(service.request.charts[c].dimensions[d].oidname);
+                    
+                    if(netdata.options.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: service.request.charts[c].dimensions[d]
+                    };
+
+                    if(typeof oidname !== 'undefined')
+                        service.snmp_oids_index[oidname] = {
+                            type: 'name',
+                            link: service.request.charts[c].dimensions[d]
+                        };
+
+                    // and set the value to null
+                    service.request.charts[c].dimensions[d].value = null;
+                }
+            }
+
+            if(netdata.options.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 = new Array();
+            for(var o in service.snmp_oids_index)
+                service.snmp_oids.push(o);
+
+            if(netdata.options.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();
+            for(var o in service.snmp_oids_index)
+                if(service.snmp_oids_index[o].type === 'value')
+                    service.snmp_oids.push(o);
+        }
+    },
+
+    getdata: function(service, index, ok, failed, callback) {
+        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(netdata.options.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(netdata.options.DEBUG === true)
+                    netdata.debug(service.module.name + ': ' + service.name + ': got valid ' + service.module.name + ' response: ' + netdata.stringify(varbinds));
+
+                for(var i = 0; i < varbinds.length; i++) {
+                    var value = null;
+
+                    if(net_snmp.isVarbindError(varbinds[i])) {
+                        if(netdata.options.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 {
+                        if(netdata.options.DEBUG === true)
+                            netdata.debug(service.module.name + ': ' + service.name + ': found ' + service.module.name + ' value of OIDs ' + varbinds[i].oid + " = " + varbinds[i].value);
+
+                        value = varbinds[i].value;
+                        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(netdata.options.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) {
+        this.prepare(service);
+
+        if(service.snmp_oids.length === 0) {
+            // no OIDs found for this service
+
+            if(netdata.options.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(netdata.options.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(netdata.options.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();
-
-			for(var c in service.request.charts) {
-				var chart = snmp.charts[c];
-
-				if(typeof chart === 'undefined') {
-					chart = service.chart(c, service.request.charts[c]);
-					snmp.charts[c] = chart;
-				}
-
-				service.begin(chart);
-				
-				for( var d in service.request.charts[c].dimensions )
-					if(service.request.charts[c].dimensions[d].value !== null)
-						service.set(d, service.request.charts[c].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) {
-		if(netdata.options.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
-		for(var c in service.request.charts) {
-			if(netdata.options.DEBUG === true)
-				netdata.debug(this.name + ': snmp hostname: ' + conf.hostname + ', examining chart: ' + c);
-
-			if(typeof service.request.charts[c].update_every === 'undefined')
-				service.request.charts[c].update_every = service.update_every;
-
-			if(typeof service.request.charts[c].multiply_range !== 'undefined') {
-				var from = service.request.charts[c].multiply_range[0];
-				var to = service.request.charts[c].multiply_range[1];
-				var prio = service.request.charts[c].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.charts[c]);
-					chart.title += from.toString();
-					
-					if(typeof chart.titleoid !== 'undefined')
-						chart.titleoid += from.toString();
-
-					chart.priority = prio++;
-					for(var d in chart.dimensions) {
-						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();
-		});
-	},
+    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();
+
+            for(var c in service.request.charts) {
+                var chart = snmp.charts[c];
+
+                if(typeof chart === 'undefined') {
+                    chart = service.chart(c, service.request.charts[c]);
+                    snmp.charts[c] = chart;
+                }
+
+                service.begin(chart);
+                
+                for( var d in service.request.charts[c].dimensions )
+                    if(service.request.charts[c].dimensions[d].value !== null)
+                        service.set(d, service.request.charts[c].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) {
+        if(netdata.options.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
+        for(var c in service.request.charts) {
+            if(netdata.options.DEBUG === true)
+                netdata.debug(this.name + ': snmp hostname: ' + conf.hostname + ', examining chart: ' + c);
+
+            if(typeof service.request.charts[c].update_every === 'undefined')
+                service.request.charts[c].update_every = service.update_every;
+
+            if(typeof service.request.charts[c].multiply_range !== 'undefined') {
+                var from = service.request.charts[c].multiply_range[0];
+                var to = service.request.charts[c].multiply_range[1];
+                var prio = service.request.charts[c].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.charts[c]);
+                    chart.title += from.toString();
+                    
+                    if(typeof chart.titleoid !== 'undefined')
+                        chart.titleoid += from.toString();
+
+                    chart.priority = prio++;
+                    for(var d in chart.dimensions) {
+                        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;