Previously we were sorting labels in every container to build a map key,
but also when generating the hash key by calling the `LabelsToSignature`
method. This moves the sorting to be done early in the event processing
then passes the sorted label array around.
Signed-off-by: Clayton O'Neill <claytono@github.com>
In #198 the signature for setting up the exporter changed slightly, a
change that #212 and #213 didn't have. This doesn't change anything
substantial.
Signed-off-by: Matthias Rampke <mr@soundcloud.com>
While it doesn't report it as a metric, when collecting, the registry
considers the base metric name to below to the histogram that's
registered. This means that we need to prevent other metrics from
registering anything under this name, in addition to checking for the
bucket, sum and count suffixes.
Signed-off-by: Clayton O'Neill <claytono@github.com>
This adds sanity checking before registering a metric to ensure that the
metric isn't already registered under an existing name. This prevents
the exporter from getting into a state where it has accepted and
registered conflicting metrics, and then cannot report the metrics it
has collected.
Signed-off-by: Clayton O'Neill <claytono@github.com>
- use MetricVec family instead of Metric
- dynamic label values instead of ConstLabels
- use dto.Metric to gain histrogram value in exporter_test
- remove hash calculations
Signed-off-by: Ivan Mikheykin <ivan.mikheykin@flant.com>
The escaping changed in 728bdc52ae, before
0.1.0. Add a test for the escape function, and test various cases,
including those mentioned in the README.
This reveals that the README is inaccurate, adjust it to what has been
the reality for many years. Fixes#97.
* Remove option flag
* Update NewExporter call signature to not take suffix boolean
* Update tests to reflect new behavior and signature
* Update documentation to reflect option flag removal
* add TCP StatsD listener support
* add listen-tcp flag to control UDP/TCP mode on same port
* statsdListenUDP/statsdListenTCP as string, and alias listen-address to listen-udp
* add stats for tcp error/line_too_long
* add test for TCP listener
Instead now we will send a warning message to the logs
and continue on with our day.
Also a guard has been added when we detect a channel has been
closed and the `Exporter.Listen` function will return out of
its loop vs always running. When a channel is closed there will
be no more data to consume, so this seems correct. It also allows
for a test to be written for the panic.
