99 lines
1.9 KiB
Go
99 lines
1.9 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package check
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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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// 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.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) != 2 {
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c.UI.Error(fmt.Sprintf("Error: command requires exactly two arguments: src and dst"))
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return 2
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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 2
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}
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// Check the intention
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allowed, _, err := client.Connect().IntentionCheck(&api.IntentionCheck{
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Source: args[0],
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Destination: args[1],
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SourceType: api.IntentionSourceConsul,
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}, nil)
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if err != nil {
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c.UI.Error(fmt.Sprintf("Error checking the connection: %s", err))
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return 2
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}
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if allowed {
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c.UI.Output("Allowed")
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return 0
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}
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c.UI.Output("Denied")
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return 1
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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 = "Check whether a connection between two services is allowed."
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help = `
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Usage: consul intention check [options] SRC DST
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Check whether a connection between SRC and DST would be allowed by
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Connect given the current Consul configuration.
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$ consul intention check web db
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`
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)
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