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resource_vagrant_vm.go
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resource_vagrant_vm.go
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package main
import (
"fmt"
"os"
"github.com/bmatcuk/go-vagrant"
"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/customdiff"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
"context"
"io/ioutil"
"log"
"path/filepath"
"sort"
"strconv"
"strings"
"time"
)
func resourceVagrantVM() *schema.Resource {
return &schema.Resource{
Description: "Integrate vagrant into terraform.",
CreateContext: resourceVagrantVMCreate,
ReadContext: resourceVagrantVMRead,
UpdateContext: resourceVagrantVMUpdate,
DeleteContext: resourceVagrantVMDelete,
CustomizeDiff: customdiff.All(
customdiff.ForceNewIfChange("name", func(ctx context.Context, old, new, meta interface{}) bool {
return old != new
}),
),
SchemaVersion: 1,
Schema: map[string]*schema.Schema{
"name": {
Description: "Name of the Vagrant resource. Forces resource to destroy/recreate if changed.",
Type: schema.TypeString,
Optional: true,
Default: "vagrantbox",
},
"vagrantfile_dir": {
Description: "Path to the directory where the Vagrantfile can be found.",
Type: schema.TypeString,
Optional: true,
Default: ".",
ValidateFunc: resourceVagrantVMPathToVagrantfileValidate,
},
"env": {
Description: "Environment variables to pass to the Vagrantfile.",
Type: schema.TypeMap,
Optional: true,
Elem: &schema.Schema{
Type: schema.TypeString,
},
},
"get_ports": {
Description: "Whether or not to retrieve forwarded port information. See `ports`.",
Type: schema.TypeBool,
Optional: true,
Default: false,
},
"machine_names": {
Description: "Names of the vagrant machines from the Vagrantfile. Names are in the same order as ssh_config.",
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{
Type: schema.TypeString,
},
},
"ssh_config": {
Description: "SSH connection information.",
Type: schema.TypeList,
Computed: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"type": {
Description: "Connection type. Only valid option is ssh at this time.",
Type: schema.TypeString,
Computed: true,
},
"user": {
Description: "The user for the connection.",
Type: schema.TypeString,
Computed: true,
},
"host": {
Description: "The address of the resource to connect to.",
Type: schema.TypeString,
Computed: true,
},
"port": {
Description: "The port to connect to.",
Type: schema.TypeString,
Computed: true,
},
"private_key": {
Description: "Private SSH key for the connection.",
Type: schema.TypeString,
Computed: true,
},
"agent": {
Description: "Whether or not to use the agent to authenticate.",
Type: schema.TypeString,
Computed: true,
},
},
},
},
"ports": {
Description: "Forwarded ports per machine. Only set if `get_ports` is true.",
Type: schema.TypeList,
Computed: true,
Elem: &schema.Schema{
Type: schema.TypeList,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"guest": {
Description: "The port on the guest machine.",
Type: schema.TypeInt,
Computed: true,
},
"host": {
Description: "The port on the host machine which maps to the guest port.",
Type: schema.TypeInt,
Computed: true,
},
},
},
},
},
},
}
}
func resourceVagrantVMCreate(ctx context.Context, d *schema.ResourceData, m interface{}) diag.Diagnostics {
ctx, cancelFunc := contextWithTimeout(ctx, d.Timeout(schema.TimeoutCreate))
defer cancelFunc()
client, err := vagrant.NewVagrantClient(d.Get("vagrantfile_dir").(string))
if err != nil {
return diag.FromErr(err)
}
log.Println("Bringing up vagrant...")
cmd := client.Up()
cmd.Context = ctx
cmd.Env = buildEnvironment(d.Get("env").(map[string]interface{}))
cmd.Parallel = true
cmd.Verbose = true
if err := cmd.Run(); err != nil {
return diag.FromErr(err)
}
d.SetId(buildId(cmd.VMInfo))
return readVagrantInfo(ctx, client, d)
}
func resourceVagrantVMRead(ctx context.Context, d *schema.ResourceData, m interface{}) diag.Diagnostics {
ctx, cancelFunc := contextWithTimeout(ctx, d.Timeout(schema.TimeoutRead))
defer cancelFunc()
client, err := vagrant.NewVagrantClient(d.Get("vagrantfile_dir").(string))
if err != nil {
return diag.FromErr(err)
}
exists, err := checkIfVMExists(ctx, client, d)
if err != nil {
return diag.FromErr(err)
} else if !exists {
// this will force terraform to run create again
d.SetId("")
return nil
}
return readVagrantInfo(ctx, client, d)
}
func resourceVagrantVMUpdate(ctx context.Context, d *schema.ResourceData, m interface{}) diag.Diagnostics {
ctx, cancelFunc := contextWithTimeout(ctx, d.Timeout(schema.TimeoutUpdate))
defer cancelFunc()
client, err := vagrant.NewVagrantClient(d.Get("vagrantfile_dir").(string))
if err != nil {
return diag.FromErr(err)
}
env := buildEnvironment(d.Get("env").(map[string]interface{}))
// reload will halt any running machines, then destroy any halted or
// suspended machines, and bring them back up
log.Println("Reloading vagrant...")
reload := client.Reload()
reload.Context = ctx
reload.Env = env
reload.Verbose = true
if err := reload.Run(); err != nil {
return diag.FromErr(err)
}
// reload will not bring up new machines, so bring them up here...
log.Println("Checking machine states...")
status := client.Status()
status.Context = ctx
status.Env = env
status.Verbose = true
if err := status.Run(); err != nil {
return diag.FromErr(err)
}
allExist := true
for _, state := range status.Status {
if state == "not_created" {
allExist = false
break
}
}
if !allExist {
log.Println("Bringing up new machines...")
up := client.Up()
up.Context = ctx
up.Env = env
up.Parallel = true
up.Verbose = true
if err := up.Run(); err != nil {
return diag.FromErr(err)
}
}
// we're done!
return readVagrantInfo(ctx, client, d)
}
func resourceVagrantVMDelete(ctx context.Context, d *schema.ResourceData, m interface{}) diag.Diagnostics {
ctx, cancelFunc := contextWithTimeout(ctx, d.Timeout(schema.TimeoutDelete))
defer cancelFunc()
client, err := vagrant.NewVagrantClient(d.Get("vagrantfile_dir").(string))
if err != nil {
return diag.FromErr(err)
}
log.Println("Destroying vagrant...")
cmd := client.Destroy()
cmd.Context = ctx
cmd.Env = buildEnvironment(d.Get("env").(map[string]interface{}))
cmd.Verbose = true
err = cmd.Run()
if err != nil {
return diag.FromErr(err)
}
return nil
}
func resourceVagrantVMPathToVagrantfileValidate(val interface{}, key string) ([]string, []error) {
path := filepath.Join(val.(string), "Vagrantfile")
if _, err := os.Stat(path); err != nil {
return nil, []error{err}
}
return nil, nil
}
func contextWithTimeout(ctx context.Context, timeout time.Duration) (context.Context, context.CancelFunc) {
if int64(timeout) > 0 {
return context.WithTimeout(ctx, timeout)
}
return ctx, func() {}
}
func buildId(info map[string]*vagrant.VMInfo) string {
var keys sort.StringSlice = make([]string, len(info)+1)
keys[0] = "vagrant"
i := 1
for key := range info {
keys[i] = key
i++
}
keys[1:].Sort()
return strings.Join(keys, ":")
}
func checkIfVMExists(ctx context.Context, client *vagrant.VagrantClient, d *schema.ResourceData) (bool, error) {
log.Println("Getting vagrant status...")
cmd := client.Status()
cmd.Context = ctx
cmd.Env = buildEnvironment(d.Get("env").(map[string]interface{}))
cmd.Verbose = true
if err := cmd.Run(); err != nil {
return false, err
}
// if any machines are not running, then let's say they don't exist
exists := true
for _, status := range cmd.Status {
if status != "running" {
exists = false
break
}
}
return exists, nil
}
func readVagrantInfo(ctx context.Context, client *vagrant.VagrantClient, d *schema.ResourceData) diag.Diagnostics {
env := buildEnvironment(d.Get("env").(map[string]interface{}))
log.Println("Getting vagrant ssh-config...")
cmd := client.SSHConfig()
cmd.Context = ctx
cmd.Env = env
cmd.Verbose = true
if err := cmd.Run(); err != nil {
return diag.FromErr(err)
}
sshConfigs := make([]map[string]string, len(cmd.Configs))
keys := make([]string, len(cmd.Configs))
i := 0
for key, config := range cmd.Configs {
sshConfig := make(map[string]string, 6)
sshConfig["type"] = "ssh"
sshConfig["user"] = config.User
sshConfig["host"] = config.HostName
sshConfig["port"] = strconv.Itoa(config.Port)
if privateKey, err := ioutil.ReadFile(config.IdentityFile); err == nil {
sshConfig["private_key"] = string(privateKey)
}
sshConfig["agent"] = "false"
sshConfigs[i] = sshConfig
keys[i] = key
i++
}
d.Set("ssh_config", sshConfigs)
d.Set("machine_names", keys)
if len(sshConfigs) == 1 {
d.SetConnInfo(sshConfigs[0])
}
ports := make([][]map[string]int, len(keys))
if d.Get("get_ports").(bool) {
for i, machine := range keys {
portCmd := client.Port()
portCmd.Context = ctx
portCmd.Env = env
portCmd.MachineName = machine
portCmd.Verbose = true
if err := portCmd.Run(); err != nil {
return diag.FromErr(err)
}
ports[i] = make([]map[string]int, len(portCmd.ForwardedPorts))
for j, p := range portCmd.ForwardedPorts {
port := make(map[string]int, 2)
port["guest"] = p.Guest
port["host"] = p.Host
ports[i][j] = port
}
}
}
d.Set("ports", ports)
return nil
}
func buildEnvironment(env map[string]interface{}) []string {
if len(env) == 0 {
return nil
}
envArray := make([]string, len(env))
i := 0
for key, value := range env {
envArray[i] = fmt.Sprintf("%v=%v", key, value)
i++
}
log.Println("Environment:", envArray)
return envArray
}