tensor.sources¶

tensor.sources.network¶

class tensor.sources.network.HTTP(config, queueBack, tensor)[source]¶

Bases: tensor.objects.Source

Performs an HTTP request

Configuration arguments:

Method:	HTTP request method to use
Match:	A text string to match in the document when it is correct
Useragent:	User-Agent header to use

Metrics:

(service name).latency:
	Time to complete request

class tensor.sources.network.Ping(config, queueBack, tensor)[source]¶

Bases: tensor.objects.Source

Performs an Ping checks against a destination

Configuration arguments:

Destination:	Host name or IP address to ping

Metrics:

(service name).latency:
	Ping latency
(service name).loss:
	Packet loss

You can also override the hostname argument to make it match metrics from that host.

tensor.sources.munin¶

class tensor.sources.munin.MuninNode(*a, **kw)[source]¶

Bases: tensor.objects.Source

Connects to munin-node and retrieves all metrics

Configuration arguments:

Host:	munin-node hostname (probably localhost)
Port:	munin-node port (probably 4949)

Metrics:

(service name).(plugin name).(keys...):
	A dot separated tree of munin plugin keys

class tensor.sources.munin.MuninProtocol[source]¶

Bases: twisted.protocols.basic.LineReceiver

MuninProtocol - provides a line receiver protocol for making requests to munin-node

Requests must be made sequentially

tensor.sources.linux¶

tensor.sources.linux.basic¶

class tensor.sources.linux.basic.CPU(*a)[source]¶

Bases: tensor.objects.Source

Reports system CPU utilisation as a percentage/100

Metrics:

(service name):	Percentage CPU utilisation

class tensor.sources.linux.basic.DiskFree(config, queueBack, tensor)[source]¶

Bases: tensor.objects.Source

Returns the free space for all mounted filesystems

Metrics:

(service name).(device):
	Used space (%)

class tensor.sources.linux.basic.LoadAverage(config, queueBack, tensor)[source]¶

Bases: tensor.objects.Source

Reports system load average for the current host

Metrics:

(service name):	Load average

class tensor.sources.linux.basic.Memory(config, queueBack, tensor)[source]¶

Bases: tensor.objects.Source

Reports system memory utilisation as a percentage/100

Metrics:

(service name):	Percentage memory utilisation

tensor.sources.linux.process¶

class tensor.sources.linux.process.ProcessCount(config, queueBack, tensor)[source]¶

Bases: tensor.objects.Source

Returns the ps count on the system

Metrics:

(service name):	Number of processes

tensor.sources.media¶

tensor.sources.media.libav¶

class tensor.sources.media.libav.DarwinRTSP(config, queueBack, tensor)[source]¶

Bases: tensor.objects.Source

Makes avprobe requests of a Darwin RTSP sample stream (sample_100kbit.mp4)

Configuration arguments:

Destination:	Host name or IP address to check

Metrics: :(service name): Time to complete request

You can also override the hostname argument to make it match metrics from that host.