/
metrics.go
130 lines (99 loc) · 2.55 KB
/
metrics.go
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package command
import (
"fmt"
"strings"
"github.com/hashicorp/nomad/api"
"github.com/posener/complete"
)
type OperatorMetricsCommand struct {
Meta
}
func (c *OperatorMetricsCommand) Help() string {
helpText := `
Usage: nomad operator metrics [options]
Get Nomad metrics
General Options:
` + generalOptionsUsage(usageOptsDefault|usageOptsNoNamespace) + `
Metrics Specific Options
-pretty
Pretty prints the JSON output
-format <format>
Specify output format (prometheus)
-json
Output the allocation in its JSON format.
-t
Format and display allocation using a Go template.
`
return strings.TrimSpace(helpText)
}
func (c *OperatorMetricsCommand) Synopsis() string {
return "Retrieve Nomad metrics"
}
func (c *OperatorMetricsCommand) AutocompleteFlags() complete.Flags {
return mergeAutocompleteFlags(c.Meta.AutocompleteFlags(FlagSetClient),
complete.Flags{
"-pretty": complete.PredictAnything,
"-format": complete.PredictAnything,
"-json": complete.PredictNothing,
"-t": complete.PredictAnything,
})
}
func (c *OperatorMetricsCommand) Name() string { return "metrics" }
func (c *OperatorMetricsCommand) Run(args []string) int {
var pretty, json bool
var format, tmpl string
flags := c.Meta.FlagSet(c.Name(), FlagSetClient)
flags.Usage = func() { c.Ui.Output(c.Help()) }
flags.BoolVar(&pretty, "pretty", false, "")
flags.StringVar(&format, "format", "", "")
flags.BoolVar(&json, "json", false, "")
flags.StringVar(&tmpl, "t", "", "")
if err := flags.Parse(args); err != nil {
c.Ui.Error(fmt.Sprintf("Error parsing flags: %s", err))
return 1
}
args = flags.Args()
if l := len(args); l != 0 {
c.Ui.Error("This command takes no arguments")
c.Ui.Error(commandErrorText(c))
return 1
}
client, err := c.Meta.Client()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error initializing client: %s", err))
return 1
}
params := map[string]string{}
if pretty {
params["pretty"] = "1"
}
if len(format) > 0 {
params["format"] = format
}
query := &api.QueryOptions{
Params: params,
}
if json || len(tmpl) > 0 {
metrics, _, err := client.Operator().MetricsSummary(query)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error querying metrics: %v", err))
return 1
}
out, err := Format(json, tmpl, metrics)
if err != nil {
c.Ui.Error(err.Error())
return 1
}
c.Ui.Output(out)
return 0
} else {
bs, err := client.Operator().Metrics(query)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error getting metrics: %v", err))
return 1
}
resp := string(bs)
c.Ui.Output(resp)
}
return 0
}