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Revert "Merge pull request #9536 from hashicorp/f-provider-stop"

Browse Source 
This reverts commit c3a4cff133, reversing
changes made to 791a02e6e4.

This change requires plugin recompilation and we should hold off until a
minor release for that.
pull/9612/head
Mitchell Hashimoto 9 years ago
parent c3a4cff133
commit 60140b28f4
No known key found for this signature in database
GPG Key ID: 744E147AA52F5B0A
12 changed files with 40 additions and 299 deletions
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3
builtin/providers/azurerm/config.go
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@ -1,7 +1,6 @@
package azurerm
import (
"context"
"fmt"
"log"
"net/http"
@ -31,8 +30,6 @@ type ArmClient struct {
tenantId string
subscriptionId string
StopContext context.Context
rivieraClient *riviera.Client
availSetClient compute.AvailabilitySetsClient

49
builtin/providers/azurerm/provider.go
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@ -17,8 +17,7 @@ import (
// Provider returns a terraform.ResourceProvider.
func Provider() terraform.ResourceProvider {
var p *schema.Provider
p = &schema.Provider{
return &schema.Provider{
Schema: map[string]*schema.Schema{
"subscription_id": {
Type: schema.TypeString,
@ -105,10 +104,8 @@ func Provider() terraform.ResourceProvider {
"azurerm_sql_firewall_rule": resourceArmSqlFirewallRule(),
"azurerm_sql_server": resourceArmSqlServer(),
},
ConfigureFunc: providerConfigure(p),
ConfigureFunc: providerConfigure,
}
return p
}
// Config is the configuration structure used to instantiate a
@ -143,33 +140,29 @@ func (c *Config) validate() error {
return err.ErrorOrNil()
}
func providerConfigure(p *schema.Provider) schema.ConfigureFunc {
return func(d *schema.ResourceData) (interface{}, error) {
config := &Config{
SubscriptionID: d.Get("subscription_id").(string),
ClientID: d.Get("client_id").(string),
ClientSecret: d.Get("client_secret").(string),
TenantID: d.Get("tenant_id").(string),
}
if err := config.validate(); err != nil {
return nil, err
}
client, err := config.getArmClient()
if err != nil {
return nil, err
}
func providerConfigure(d *schema.ResourceData) (interface{}, error) {
config := &Config{
SubscriptionID: d.Get("subscription_id").(string),
ClientID: d.Get("client_id").(string),
ClientSecret: d.Get("client_secret").(string),
TenantID: d.Get("tenant_id").(string),
}
client.StopContext = p.StopContext()
if err := config.validate(); err != nil {
return nil, err
}
err = registerAzureResourceProvidersWithSubscription(client.rivieraClient)
if err != nil {
return nil, err
}
client, err := config.getArmClient()
if err != nil {
return nil, err
}
return client, nil
err = registerAzureResourceProvidersWithSubscription(client.rivieraClient)
if err != nil {
return nil, err
}
return client, nil
}
func registerProviderWithSubscription(providerName string, client *riviera.Client) error {

25
builtin/providers/azurerm/resource_arm_storage_account.go
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@ -1,7 +1,6 @@
package azurerm
import (
"context"
"fmt"
"log"
"net/http"
@ -12,6 +11,7 @@ import (
"github.com/Azure/azure-sdk-for-go/arm/storage"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/hashicorp/terraform/helper/signalwrapper"
"github.com/hashicorp/terraform/helper/validation"
)
@ -192,11 +192,24 @@ func resourceArmStorageAccountCreate(d *schema.ResourceData, meta interface{}) e
opts.Properties.AccessTier = storage.AccessTier(accessTier.(string))
}
// Create
cancelCtx, cancelFunc := context.WithTimeout(client.StopContext, 1*time.Hour)
_, createErr := storageClient.Create(
resourceGroupName, storageAccountName, opts, cancelCtx.Done())
cancelFunc()
// Create the storage account. We wrap this so that it is cancellable
// with a Ctrl-C since this can take a LONG time.
wrap := signalwrapper.Run(func(cancelCh <-chan struct{}) error {
_, err := storageClient.Create(resourceGroupName, storageAccountName, opts, cancelCh)
return err
})
// Check the result of the wrapped function.
var createErr error
select {
case <-time.After(1 * time.Hour):
// An hour is way above the expected P99 for this API call so
// we premature cancel and error here.
createErr = wrap.Cancel()
case createErr = <-wrap.ErrCh:
// Successfully ran (but perhaps not successfully completed)
// the function.
}
// The only way to get the ID back apparently is to read the resource again
read, err := storageClient.GetProperties(resourceGroupName, storageAccountName)

34
helper/schema/provider.go
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@ -1,11 +1,9 @@
package schema
import (
"context"
"errors"
"fmt"
"sort"
"sync"
"github.com/hashicorp/go-multierror"
"github.com/hashicorp/terraform/terraform"
@ -51,10 +49,6 @@ type Provider struct {
ConfigureFunc ConfigureFunc
meta interface{}
stopCtx context.Context
stopCtxCancel context.CancelFunc
stopOnce sync.Once
}
// ConfigureFunc is the function used to configure a Provider.
@ -110,34 +104,6 @@ func (p *Provider) SetMeta(v interface{}) {
p.meta = v
}
// Stopped reports whether the provider has been stopped or not.
func (p *Provider) Stopped() bool {
ctx := p.StopContext()
select {
case <-ctx.Done():
return true
default:
return false
}
}
// StopCh returns a channel that is closed once the provider is stopped.
func (p *Provider) StopContext() context.Context {
p.stopOnce.Do(p.stopInit)
return p.stopCtx
}
func (p *Provider) stopInit() {
p.stopCtx, p.stopCtxCancel = context.WithCancel(context.Background())
}
// Stop implementation of terraform.ResourceProvider interface.
func (p *Provider) Stop() error {
p.stopOnce.Do(p.stopInit)
p.stopCtxCancel()
return nil
}
// Input implementation of terraform.ResourceProvider interface.
func (p *Provider) Input(
input terraform.UIInput,

53
helper/schema/provider_test.go
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@ -4,7 +4,6 @@ import (
"fmt"
"reflect"
"testing"
"time"
"github.com/hashicorp/terraform/config"
"github.com/hashicorp/terraform/terraform"
@ -329,55 +328,3 @@ func TestProviderMeta(t *testing.T) {
t.Fatalf("bad: %#v", v)
}
}
func TestProviderStop(t *testing.T) {
var p Provider
if p.Stopped() {
t.Fatal("should not be stopped")
}
// Verify stopch blocks
ch := p.StopContext().Done()
select {
case <-ch:
t.Fatal("should not be stopped")
case <-time.After(10 * time.Millisecond):
}
// Stop it
if err := p.Stop(); err != nil {
t.Fatalf("err: %s", err)
}
// Verify
if !p.Stopped() {
t.Fatal("should be stopped")
}
select {
case <-ch:
case <-time.After(10 * time.Millisecond):
t.Fatal("should be stopped")
}
}
func TestProviderStop_stopFirst(t *testing.T) {
var p Provider
// Stop it
if err := p.Stop(); err != nil {
t.Fatalf("err: %s", err)
}
// Verify
if !p.Stopped() {
t.Fatal("should be stopped")
}
select {
case <-p.StopContext().Done():
case <-time.After(10 * time.Millisecond):
t.Fatal("should be stopped")
}
}

28
plugin/resource_provider.go
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@ -28,19 +28,6 @@ type ResourceProvider struct {
Client *rpc.Client
}
func (p *ResourceProvider) Stop() error {
var resp ResourceProviderStopResponse
err := p.Client.Call("Plugin.Stop", new(interface{}), &resp)
if err != nil {
return err
}
if resp.Error != nil {
err = resp.Error
}
return err
}
func (p *ResourceProvider) Input(
input terraform.UIInput,
c *terraform.ResourceConfig) (*terraform.ResourceConfig, error) {
@ -308,10 +295,6 @@ type ResourceProviderServer struct {
Provider terraform.ResourceProvider
}
type ResourceProviderStopResponse struct {
Error *plugin.BasicError
}
type ResourceProviderConfigureResponse struct {
Error *plugin.BasicError
}
@ -407,17 +390,6 @@ type ResourceProviderValidateResourceResponse struct {
Errors []*plugin.BasicError
}
func (s *ResourceProviderServer) Stop(
_ interface{},
reply *ResourceProviderStopResponse) error {
err := s.Provider.Stop()
*reply = ResourceProviderStopResponse{
Error: plugin.NewBasicError(err),
}
return nil
}
func (s *ResourceProviderServer) Input(
args *ResourceProviderInputArgs,
reply *ResourceProviderInputResponse) error {

55
plugin/resource_provider_test.go
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@ -14,61 +14,6 @@ func TestResourceProvider_impl(t *testing.T) {
var _ terraform.ResourceProvider = new(ResourceProvider)
}
func TestResourceProvider_stop(t *testing.T) {
// Create a mock provider
p := new(terraform.MockResourceProvider)
client, _ := plugin.TestPluginRPCConn(t, pluginMap(&ServeOpts{
ProviderFunc: testProviderFixed(p),
}))
defer client.Close()
// Request the provider
raw, err := client.Dispense(ProviderPluginName)
if err != nil {
t.Fatalf("err: %s", err)
}
provider := raw.(terraform.ResourceProvider)
// Stop
e := provider.Stop()
if !p.StopCalled {
t.Fatal("stop should be called")
}
if e != nil {
t.Fatalf("bad: %#v", e)
}
}
func TestResourceProvider_stopErrors(t *testing.T) {
p := new(terraform.MockResourceProvider)
p.StopReturnError = errors.New("foo")
// Create a mock provider
client, _ := plugin.TestPluginRPCConn(t, pluginMap(&ServeOpts{
ProviderFunc: testProviderFixed(p),
}))
defer client.Close()
// Request the provider
raw, err := client.Dispense(ProviderPluginName)
if err != nil {
t.Fatalf("err: %s", err)
}
provider := raw.(terraform.ResourceProvider)
// Stop
e := provider.Stop()
if !p.StopCalled {
t.Fatal("stop should be called")
}
if e == nil {
t.Fatal("should have error")
}
if e.Error() != "foo" {
t.Fatalf("bad: %s", e)
}
}
func TestResourceProvider_input(t *testing.T) {
// Create a mock provider
p := new(terraform.MockResourceProvider)

44
terraform/context.go
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@ -105,7 +105,6 @@ type Context struct {
parallelSem Semaphore
providerInputConfig map[string]map[string]interface{}
runCh <-chan struct{}
stopCh chan struct{}
shadowErr error
}
@ -588,9 +587,6 @@ func (c *Context) Stop() {
// Tell the hook we want to stop
c.sh.Stop()
// Close the stop channel
close(c.stopCh)
// Wait for us to stop
c.l.Unlock()
<-ch
@ -676,9 +672,6 @@ func (c *Context) acquireRun() chan<- struct{} {
ch := make(chan struct{})
c.runCh = ch
// Reset the stop channel so we can watch that
c.stopCh = make(chan struct{})
// Reset the stop hook so we're not stopped
c.sh.Reset()
@ -694,7 +687,6 @@ func (c *Context) releaseRun(ch chan<- struct{}) {
close(ch)
c.runCh = nil
c.stopCh = nil
}
func (c *Context) walk(
@ -722,16 +714,9 @@ func (c *Context) walk(
log.Printf("[DEBUG] Starting graph walk: %s", operation.String())
walker := &ContextGraphWalker{Context: realCtx, Operation: operation}
// Watch for a stop so we can call the provider Stop() API.
doneCh := make(chan struct{})
go c.watchStop(walker, c.stopCh, doneCh)
// Walk the real graph, this will block until it completes
realErr := graph.Walk(walker)
// Close the done channel so the watcher stops
close(doneCh)
// If we have a shadow graph and we interrupted the real graph, then
// we just close the shadow and never verify it. It is non-trivial to
// recreate the exact execution state up until an interruption so this
@ -811,35 +796,6 @@ func (c *Context) walk(
return walker, realErr
}
func (c *Context) watchStop(walker *ContextGraphWalker, stopCh, doneCh <-chan struct{}) {
// Wait for a stop or completion
select {
case <-stopCh:
// Stop was triggered. Fall out of the select
case <-doneCh:
// Done, just exit completely
return
}
// If we're here, we're stopped, trigger the call.
// Copy the providers so that a misbehaved blocking Stop doesn't
// completely hang Terraform.
walker.providerLock.Lock()
ps := make([]ResourceProvider, 0, len(walker.providerCache))
for _, p := range walker.providerCache {
ps = append(ps, p)
}
defer walker.providerLock.Unlock()
for _, p := range ps {
// We ignore the error for now since there isn't any reasonable
// action to take if there is an error here, since the stop is still
// advisory: Terraform will exit once the graph node completes.
p.Stop()
}
}
// parseVariableAsHCL parses the value of a single variable as would have been specified
// on the command line via -var or in an environment variable named TF_VAR_x, where x is
// the name of the variable. In order to get around the restriction of HCL requiring a

4
terraform/context_apply_test.go
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@ -1043,10 +1043,6 @@ func TestContext2Apply_cancel(t *testing.T) {
if actual != expected {
t.Fatalf("bad: \n%s", actual)
}
if !p.StopCalled {
t.Fatal("stop should be called")
}
}
func TestContext2Apply_compute(t *testing.T) {

20
terraform/resource_provider.go
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@ -47,26 +47,6 @@ type ResourceProvider interface {
// knows how to manage.
Resources() []ResourceType
// Stop is called when the provider should halt any in-flight actions.
//
// This can be used to make a nicer Ctrl-C experience for Terraform.
// Even if this isn't implemented to do anything (just returns nil),
// Terraform will still cleanly stop after the currently executing
// graph node is complete. However, this API can be used to make more
// efficient halts.
//
// Stop doesn't have to and shouldn't block waiting for in-flight actions
// to complete. It should take any action it wants and return immediately
// acknowledging it has received the stop request. Terraform core will
// automatically not make any further API calls to the provider soon
// after Stop is called (technically exactly once the currently executing
// graph nodes are complete).
//
// The error returned, if non-nil, is assumed to mean that signaling the
// stop somehow failed and that the user should expect potentially waiting
// a longer period of time.
Stop() error
/*********************************************************************
* Functions related to individual resources
*********************************************************************/

15
terraform/resource_provider_mock.go
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@ -56,9 +56,6 @@ type MockResourceProvider struct {
ReadDataDiffFn func(*InstanceInfo, *ResourceConfig) (*InstanceDiff, error)
ReadDataDiffReturn *InstanceDiff
ReadDataDiffReturnError error
StopCalled bool
StopFn func() error
StopReturnError error
DataSourcesCalled bool
DataSourcesReturn []DataSource
ValidateCalled bool
@ -144,18 +141,6 @@ func (p *MockResourceProvider) Configure(c *ResourceConfig) error {
return p.ConfigureReturnError
}
func (p *MockResourceProvider) Stop() error {
p.Lock()
defer p.Unlock()
p.StopCalled = true
if p.StopFn != nil {
return p.StopFn()
}
return p.StopReturnError
}
func (p *MockResourceProvider) Apply(
info *InstanceInfo,
state *InstanceState,

9
terraform/shadow_resource_provider.go
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@ -107,10 +107,6 @@ func (p *shadowResourceProviderReal) Configure(c *ResourceConfig) error {
return err
}
func (p *shadowResourceProviderReal) Stop() error {
return p.ResourceProvider.Stop()
}
func (p *shadowResourceProviderReal) ValidateResource(
t string, c *ResourceConfig) ([]string, []error) {
key := t
@ -445,11 +441,6 @@ func (p *shadowResourceProviderShadow) Configure(c *ResourceConfig) error {
return result.Result
}
// Stop returns immediately.
func (p *shadowResourceProviderShadow) Stop() error {
return nil
}
func (p *shadowResourceProviderShadow) ValidateResource(t string, c *ResourceConfig) ([]string, []error) {
// Unique key
key := t

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