npd

func FetchNPDMetrics ¶

func FetchNPDMetrics(ins gce.Instance) ([]metrics.Float64MetricRepresentation, error)

FetchNPDMetrics fetches and parses metrics reported by NPD on the provided GCE instance.

func SaveTestArtifacts ¶

func SaveTestArtifacts(ins gce.Instance, directory string) []error

SaveTestArtifacts saves debugging data from NPD.

func SetupNPD ¶

func SetupNPD(ins gce.Instance, npdBuildTar string) error

SetupNPD installs NPD from the test tarball onto the provided GCE instance.

Here is how it works:

1. SetupNPD will SCP the NPD build tarball onto the VM.
2. SetupNPD will extract the tarball in the VM, to expose the test/e2e-install.sh on the VM.
3. SetupNPD will then call the e2e-install.sh script, and feed the NPD build tarball as input.
4. Finally, the e2e-install.sh script will do the heavy lifting of installing NPD (setting up binary/config directories, setting up systemd config file, etc).

func WaitForNPD ¶

func WaitForNPD(ins gce.Instance, metricNames []string, timeoutSeconds uint) error

WaitForNPD waits for NPD to become ready by waiting for expected metrics.