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resource_heroku_addon.go
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resource_heroku_addon.go
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package heroku
import (
"fmt"
"log"
"sync"
"github.com/bgentry/heroku-go"
"github.com/hashicorp/terraform/flatmap"
"github.com/hashicorp/terraform/helper/config"
"github.com/hashicorp/terraform/helper/diff"
"github.com/hashicorp/terraform/terraform"
)
// Global lock to prevent parallelism for heroku_addon since
// the Heroku API cannot handle a single application requesting
// multiple addons simultaneously.
var addonLock sync.Mutex
func resource_heroku_addon_create(
s *terraform.ResourceState,
d *terraform.ResourceDiff,
meta interface{}) (*terraform.ResourceState, error) {
addonLock.Lock()
defer addonLock.Unlock()
p := meta.(*ResourceProvider)
client := p.client
// Merge the diff into the state so that we have all the attributes
// properly.
rs := s.MergeDiff(d)
app := rs.Attributes["app"]
plan := rs.Attributes["plan"]
opts := heroku.AddonCreateOpts{}
if attr, ok := rs.Attributes["config.#"]; ok && attr == "1" {
vs := flatmap.Expand(
rs.Attributes, "config").([]interface{})
config := make(map[string]string)
for k, v := range vs[0].(map[string]interface{}) {
config[k] = v.(string)
}
opts.Config = &config
}
log.Printf("[DEBUG] Addon create configuration: %#v, %#v, %#v", app, plan, opts)
a, err := client.AddonCreate(app, plan, &opts)
if err != nil {
return s, err
}
rs.ID = a.Id
log.Printf("[INFO] Addon ID: %s", rs.ID)
addon, err := resource_heroku_addon_retrieve(app, rs.ID, client)
if err != nil {
return rs, err
}
return resource_heroku_addon_update_state(rs, addon)
}
func resource_heroku_addon_update(
s *terraform.ResourceState,
d *terraform.ResourceDiff,
meta interface{}) (*terraform.ResourceState, error) {
p := meta.(*ResourceProvider)
client := p.client
rs := s.MergeDiff(d)
app := rs.Attributes["app"]
if attr, ok := d.Attributes["plan"]; ok {
ad, err := client.AddonUpdate(
app, rs.ID,
attr.New)
if err != nil {
return s, err
}
// Store the new ID
rs.ID = ad.Id
}
addon, err := resource_heroku_addon_retrieve(app, rs.ID, client)
if err != nil {
return rs, err
}
return resource_heroku_addon_update_state(rs, addon)
}
func resource_heroku_addon_destroy(
s *terraform.ResourceState,
meta interface{}) error {
p := meta.(*ResourceProvider)
client := p.client
log.Printf("[INFO] Deleting Addon: %s", s.ID)
// Destroy the app
err := client.AddonDelete(s.Attributes["app"], s.ID)
if err != nil {
return fmt.Errorf("Error deleting addon: %s", err)
}
return nil
}
func resource_heroku_addon_refresh(
s *terraform.ResourceState,
meta interface{}) (*terraform.ResourceState, error) {
p := meta.(*ResourceProvider)
client := p.client
app, err := resource_heroku_addon_retrieve(s.Attributes["app"], s.ID, client)
if err != nil {
return nil, err
}
return resource_heroku_addon_update_state(s, app)
}
func resource_heroku_addon_diff(
s *terraform.ResourceState,
c *terraform.ResourceConfig,
meta interface{}) (*terraform.ResourceDiff, error) {
b := &diff.ResourceBuilder{
Attrs: map[string]diff.AttrType{
"app": diff.AttrTypeCreate,
"plan": diff.AttrTypeUpdate,
"config": diff.AttrTypeCreate,
},
ComputedAttrs: []string{
"provider_id",
"config_vars",
},
}
return b.Diff(s, c)
}
func resource_heroku_addon_update_state(
s *terraform.ResourceState,
addon *heroku.Addon) (*terraform.ResourceState, error) {
s.Attributes["name"] = addon.Name
s.Attributes["plan"] = addon.Plan.Name
s.Attributes["provider_id"] = addon.ProviderId
toFlatten := make(map[string]interface{})
if len(addon.ConfigVars) > 0 {
toFlatten["config_vars"] = addon.ConfigVars
}
for k, v := range flatmap.Flatten(toFlatten) {
s.Attributes[k] = v
}
s.Dependencies = []terraform.ResourceDependency{
terraform.ResourceDependency{ID: s.Attributes["app"]},
}
return s, nil
}
func resource_heroku_addon_retrieve(app string, id string, client *heroku.Client) (*heroku.Addon, error) {
addon, err := client.AddonInfo(app, id)
if err != nil {
return nil, fmt.Errorf("Error retrieving addon: %s", err)
}
return addon, nil
}
func resource_heroku_addon_validation() *config.Validator {
return &config.Validator{
Required: []string{
"app",
"plan",
},
Optional: []string{
"config.*",
},
}
}