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resource_heroku_app.go
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resource_heroku_app.go
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package heroku
import (
"fmt"
"log"
"github.com/cyberdelia/heroku-go/v3"
"github.com/hashicorp/terraform/helper/multierror"
"github.com/hashicorp/terraform/helper/schema"
)
// type application is used to store all the details of a heroku app
type application struct {
Id string // Id of the resource
App *heroku.App // The heroku application
Client *heroku.Service // Client to interact with the heroku API
Vars map[string]string // The vars on the application
}
// Updates the application to have the latest from remote
func (a *application) Update() error {
var errs []error
var err error
a.App, err = a.Client.AppInfo(a.Id)
if err != nil {
errs = append(errs, err)
}
a.Vars, err = retrieve_config_vars(a.Id, a.Client)
if err != nil {
errs = append(errs, err)
}
if len(errs) > 0 {
return &multierror.Error{Errors: errs}
}
return nil
}
func resourceHerokuApp() *schema.Resource {
return &schema.Resource{
Create: switchHerokuAppCreate,
Read: resourceHerokuAppRead,
Update: resourceHerokuAppUpdate,
Delete: resourceHerokuAppDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"region": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"stack": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"config_vars": &schema.Schema{
Type: schema.TypeList,
Optional: true,
Elem: &schema.Schema{
Type: schema.TypeMap,
},
},
"all_config_vars": &schema.Schema{
Type: schema.TypeMap,
Computed: true,
},
"git_url": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"web_url": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"heroku_hostname": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"organization": &schema.Schema{
Type: schema.TypeString,
Description: "Name of Organization to create application in. Leave blank for personal apps.",
Optional: true,
ForceNew: true,
},
},
}
}
func switchHerokuAppCreate(d *schema.ResourceData, meta interface{}) error {
if _, ok := d.GetOk("organization"); ok {
return resourceHerokuOrgAppCreate(d, meta)
} else {
return resourceHerokuAppCreate(d, meta)
}
}
func resourceHerokuAppCreate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*heroku.Service)
// Build up our creation options
opts := heroku.AppCreateOpts{}
if v, ok := d.GetOk("name"); ok {
vs := v.(string)
log.Printf("[DEBUG] App name: %s", vs)
opts.Name = &vs
}
if v, ok := d.GetOk("region"); ok {
vs := v.(string)
log.Printf("[DEBUG] App region: %s", vs)
opts.Region = &vs
}
if v, ok := d.GetOk("stack"); ok {
vs := v.(string)
log.Printf("[DEBUG] App stack: %s", vs)
opts.Stack = &vs
}
log.Printf("[DEBUG] Creating Heroku app...")
a, err := client.AppCreate(opts)
if err != nil {
return err
}
d.SetId(a.Name)
log.Printf("[INFO] App ID: %s", d.Id())
if v, ok := d.GetOk("config_vars"); ok {
err = update_config_vars(d.Id(), client, nil, v.([]interface{}))
if err != nil {
return err
}
}
return resourceHerokuAppRead(d, meta)
}
func resourceHerokuOrgAppCreate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*heroku.Service)
// Build up our creation options
opts := heroku.OrganizationAppCreateOpts{}
if v, ok := d.GetOk("organization"); ok {
vs := v.(string)
log.Printf("[DEBUG] App name: %s", vs)
opts.Organization = &vs
}
if v, ok := d.GetOk("name"); ok {
vs := v.(string)
log.Printf("[DEBUG] App name: %s", vs)
opts.Name = &vs
}
if v, ok := d.GetOk("region"); ok {
vs := v.(string)
log.Printf("[DEBUG] App region: %s", vs)
opts.Region = &vs
}
if v, ok := d.GetOk("stack"); ok {
vs := v.(string)
log.Printf("[DEBUG] App stack: %s", vs)
opts.Stack = &vs
}
log.Printf("[DEBUG] Creating Heroku app...")
a, err := client.OrganizationAppCreate(opts)
if err != nil {
return err
}
d.SetId(a.Name)
log.Printf("[INFO] App ID: %s", d.Id())
if v, ok := d.GetOk("config_vars"); ok {
err = update_config_vars(d.Id(), client, nil, v.([]interface{}))
if err != nil {
return err
}
}
return resourceHerokuAppRead(d, meta)
}
func resourceHerokuAppRead(d *schema.ResourceData, meta interface{}) error {
client := meta.(*heroku.Service)
app, err := resource_heroku_app_retrieve(d.Id(), client)
if err != nil {
return err
}
// Only set the config_vars that we have set in the configuration.
// The "all_config_vars" field has all of them.
configVars := make(map[string]string)
care := make(map[string]struct{})
for _, v := range d.Get("config_vars").([]interface{}) {
for k, _ := range v.(map[string]interface{}) {
care[k] = struct{}{}
}
}
for k, v := range app.Vars {
if _, ok := care[k]; ok {
configVars[k] = v
}
}
var configVarsValue []map[string]string
if len(configVars) > 0 {
configVarsValue = []map[string]string{configVars}
}
d.Set("name", app.App.Name)
d.Set("stack", app.App.Stack.Name)
d.Set("region", app.App.Region.Name)
d.Set("git_url", app.App.GitURL)
d.Set("web_url", app.App.WebURL)
d.Set("config_vars", configVarsValue)
d.Set("all_config_vars", app.Vars)
// We know that the hostname on heroku will be the name+herokuapp.com
// You need this to do things like create DNS CNAME records
d.Set("heroku_hostname", fmt.Sprintf("%s.herokuapp.com", app.App.Name))
return nil
}
func resourceHerokuAppUpdate(d *schema.ResourceData, meta interface{}) error {
client := meta.(*heroku.Service)
// If name changed, update it
if d.HasChange("name") {
v := d.Get("name").(string)
opts := heroku.AppUpdateOpts{
Name: &v,
}
renamedApp, err := client.AppUpdate(d.Id(), opts)
if err != nil {
return err
}
// Store the new ID
d.SetId(renamedApp.Name)
}
// If the config vars changed, then recalculate those
if d.HasChange("config_vars") {
o, n := d.GetChange("config_vars")
if o == nil {
o = []interface{}{}
}
if n == nil {
n = []interface{}{}
}
err := update_config_vars(
d.Id(), client, o.([]interface{}), n.([]interface{}))
if err != nil {
return err
}
}
return resourceHerokuAppRead(d, meta)
}
func resourceHerokuAppDelete(d *schema.ResourceData, meta interface{}) error {
client := meta.(*heroku.Service)
log.Printf("[INFO] Deleting App: %s", d.Id())
err := client.AppDelete(d.Id())
if err != nil {
return fmt.Errorf("Error deleting App: %s", err)
}
d.SetId("")
return nil
}
func resource_heroku_app_retrieve(id string, client *heroku.Service) (*application, error) {
app := application{Id: id, Client: client}
err := app.Update()
if err != nil {
return nil, fmt.Errorf("Error retrieving app: %s", err)
}
return &app, nil
}
func retrieve_config_vars(id string, client *heroku.Service) (map[string]string, error) {
vars, err := client.ConfigVarInfo(id)
if err != nil {
return nil, err
}
return vars, nil
}
// Updates the config vars for from an expanded configuration.
func update_config_vars(
id string,
client *heroku.Service,
o []interface{},
n []interface{}) error {
vars := make(map[string]*string)
for _, v := range o {
for k, _ := range v.(map[string]interface{}) {
vars[k] = nil
}
}
for _, v := range n {
for k, v := range v.(map[string]interface{}) {
val := v.(string)
vars[k] = &val
}
}
log.Printf("[INFO] Updating config vars: *%#v", vars)
if _, err := client.ConfigVarUpdate(id, vars); err != nil {
return fmt.Errorf("Error updating config vars: %s", err)
}
return nil
}