open-consul/command/info.go

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package command
import (
"fmt"
"github.com/hashicorp/consul/command/base"
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"sort"
"strings"
)
// InfoCommand is a Command implementation that queries a running
// Consul agent for various debugging statistics for operators
type InfoCommand struct {
base.Command
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}
func (i *InfoCommand) Help() string {
helpText := `
Usage: consul info [options]
Provides debugging information for operators
` + i.Command.Help()
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return strings.TrimSpace(helpText)
}
func (i *InfoCommand) Run(args []string) int {
i.Command.NewFlagSet(i)
if err := i.Command.Parse(args); err != nil {
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return 1
}
client, err := i.Command.HTTPClient()
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if err != nil {
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i.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
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return 1
}
self, err := client.Agent().Self()
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if err != nil {
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i.UI.Error(fmt.Sprintf("Error querying agent: %s", err))
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return 1
}
stats, ok := self["Stats"]
if !ok {
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i.UI.Error(fmt.Sprintf("Agent response did not contain 'Stats' key: %v", self))
return 1
}
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// Get the keys in sorted order
keys := make([]string, 0, len(stats))
for key := range stats {
keys = append(keys, key)
}
sort.Strings(keys)
// Iterate over each top-level key
for _, key := range keys {
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i.UI.Output(key + ":")
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// Sort the sub-keys
subvals, ok := stats[key].(map[string]interface{})
if !ok {
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i.UI.Error(fmt.Sprintf("Got invalid subkey in stats: %v", subvals))
return 1
}
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subkeys := make([]string, 0, len(subvals))
for k := range subvals {
subkeys = append(subkeys, k)
}
sort.Strings(subkeys)
// Iterate over the subkeys
for _, subkey := range subkeys {
val := subvals[subkey]
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i.UI.Output(fmt.Sprintf("\t%s = %s", subkey, val))
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}
}
return 0
}
func (i *InfoCommand) Synopsis() string {
return "Provides debugging information for operators."
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}