114 lines
2.3 KiB
Go
114 lines
2.3 KiB
Go
package match
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import (
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"flag"
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"fmt"
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"io"
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"github.com/hashicorp/consul/api"
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"github.com/hashicorp/consul/command/flags"
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"github.com/mitchellh/cli"
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)
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func New(ui cli.Ui) *cmd {
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c := &cmd{UI: ui}
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c.init()
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return c
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}
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type cmd struct {
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UI cli.Ui
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flags *flag.FlagSet
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http *flags.HTTPFlags
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help string
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// flags
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flagSource bool
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flagDestination bool
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// testStdin is the input for testing.
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testStdin io.Reader
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}
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func (c *cmd) init() {
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c.flags = flag.NewFlagSet("", flag.ContinueOnError)
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c.flags.BoolVar(&c.flagSource, "source", false,
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"Match intentions with the given source.")
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c.flags.BoolVar(&c.flagDestination, "destination", false,
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"Match intentions with the given destination.")
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c.http = &flags.HTTPFlags{}
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flags.Merge(c.flags, c.http.ClientFlags())
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flags.Merge(c.flags, c.http.ServerFlags())
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flags.Merge(c.flags, c.http.MultiTenancyFlags())
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c.help = flags.Usage(help, c.flags)
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}
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func (c *cmd) Run(args []string) int {
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if err := c.flags.Parse(args); err != nil {
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return 2
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}
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args = c.flags.Args()
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if len(args) != 1 {
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c.UI.Error(fmt.Sprintf("Error: command requires exactly one argument: src or dst"))
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return 1
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}
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if c.flagSource && c.flagDestination {
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c.UI.Error(fmt.Sprintf("Error: only one of -source or -destination may be specified"))
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return 1
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}
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by := api.IntentionMatchDestination
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if c.flagSource {
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by = api.IntentionMatchSource
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}
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// Create and test the HTTP client
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client, err := c.http.APIClient()
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error connecting to Consul agent: %s", err))
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return 1
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}
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// Match the intention
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matches, _, err := client.Connect().IntentionMatch(&api.IntentionMatch{
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By: by,
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Names: []string{args[0]},
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}, nil)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error matching the connection: %s", err))
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return 1
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}
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for _, ixn := range matches[args[0]] {
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c.UI.Output(ixn.String())
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}
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return 0
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}
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func (c *cmd) Synopsis() string {
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return synopsis
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}
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func (c *cmd) Help() string {
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return c.help
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}
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const (
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synopsis = "Show intentions that match a source or destination."
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help = `
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Usage: consul intention match [options] SRC|DST
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Show the list of intentions that would be enforced for a given source
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or destination. The intentions are listed in the order they would be
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evaluated.
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$ consul intention match db
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$ consul intention match -source web
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`
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)
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