Redis resource (#1485)

<!-- This change is generated by MagicModules. -->
/cc @danawillow

Author: modular-magician

google/provider_redis_gen.go

@@ -16,4 +16,6 @@ package google
 
 import "github.com/hashicorp/terraform/helper/schema"
 
-var GeneratedRedisResourcesMap = map[string]*schema.Resource{}
+var GeneratedRedisResourcesMap = map[string]*schema.Resource{
+	"google_redis_instance": resourceRedisInstance(),
+}

google/redis_operation.go

@@ -0,0 +1,64 @@
+package google
+
+import (
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/hashicorp/terraform/helper/resource"
+	"google.golang.org/api/redis/v1beta1"
+)
+
+type RedisOperationWaiter struct {
+	Service *redis.ProjectsLocationsService
+	Op      *redis.Operation
+}
+
+func (w *RedisOperationWaiter) RefreshFunc() resource.StateRefreshFunc {
+	return func() (interface{}, string, error) {
+		op, err := w.Service.Operations.Get(w.Op.Name).Do()
+
+		if err != nil {
+			return nil, "", err
+		}
+
+		log.Printf("[DEBUG] Got %v while polling for operation %s's 'done' status", op.Done, w.Op.Name)
+
+		return op, fmt.Sprint(op.Done), nil
+	}
+}
+
+func (w *RedisOperationWaiter) Conf() *resource.StateChangeConf {
+	return &resource.StateChangeConf{
+		Pending: []string{"false"},
+		Target:  []string{"true"},
+		Refresh: w.RefreshFunc(),
+	}
+}
+
+func redisOperationWait(service *redis.Service, op *redis.Operation, project, activity string) error {
+	return redisOperationWaitTime(service, op, project, activity, 4)
+}
+
+func redisOperationWaitTime(service *redis.Service, op *redis.Operation, project, activity string, timeoutMin int) error {
+	w := &RedisOperationWaiter{
+		Service: service.Projects.Locations,
+		Op:      op,
+	}
+
+	state := w.Conf()
+	state.Delay = 10 * time.Second
+	state.Timeout = time.Duration(timeoutMin) * time.Minute
+	state.MinTimeout = 2 * time.Second
+	opRaw, err := state.WaitForState()
+	if err != nil {
+		return fmt.Errorf("Error waiting for %s: %s", activity, err)
+	}
+
+	op = opRaw.(*redis.Operation)
+	if op.Error != nil {
+		return fmt.Errorf("Error code %v, message: %s", op.Error.Code, op.Error.Message)
+	}
+
+	return nil
+}