add new resource google_bigtable_gc_policy (#3293)

* adding new resource google_bigtable_gc_policy

* rename family to column_family

Signed-off-by: Kevin Labesse <kevin@labesse.me>

* adding more example

Signed-off-by: Kevin Labesse <kevin@labesse.me>

* change from TypeMap to TypeList

Signed-off-by: Kevin Labesse <kevin@labesse.me>

* adding drift detection

Signed-off-by: Kevin Labesse <kevin@labesse.me>

* fix panic from bad cast

* update import to new terraform sdk

Signed-off-by: Kevin Labesse <kevin@labesse.me>

google/provider.go

@@ -559,6 +559,7 @@ func ResourceMapWithErrors() (map[string]*schema.Resource, error) {
 		map[string]*schema.Resource{
 			"google_app_engine_application":                resourceAppEngineApplication(),
 			"google_bigquery_table":                        resourceBigQueryTable(),
+			"google_bigtable_gc_policy":                    resourceBigtableGCPolicy(),
 			"google_bigtable_instance":                     resourceBigtableInstance(),
 			"google_bigtable_instance_iam_binding":         ResourceIamBinding(IamBigtableInstanceSchema, NewBigtableInstanceUpdater, BigtableInstanceIdParseFunc),
 			"google_bigtable_instance_iam_member":          ResourceIamMember(IamBigtableInstanceSchema, NewBigtableInstanceUpdater, BigtableInstanceIdParseFunc),

google/resource_bigtable_gc_policy.go

@@ -0,0 +1,231 @@
+package google
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+
+	"cloud.google.com/go/bigtable"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
+	"github.com/hashicorp/terraform-plugin-sdk/helper/validation"
+)
+
+const (
+	GCPolicyModeIntersection = "INTERSECTION"
+	GCPolicyModeUnion        = "UNION"
+)
+
+func resourceBigtableGCPolicy() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceBigtableGCPolicyCreate,
+		Read:   resourceBigtableGCPolicyRead,
+		Delete: resourceBigtableGCPolicyDestroy,
+
+		Schema: map[string]*schema.Schema{
+			"instance_name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"table": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"column_family": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+
+			"mode": {
+				Type:         schema.TypeString,
+				Optional:     true,
+				ForceNew:     true,
+				ValidateFunc: validation.StringInSlice([]string{GCPolicyModeIntersection, GCPolicyModeUnion}, false),
+			},
+
+			"max_age": {
+				Type:     schema.TypeList,
+				Optional: true,
+				ForceNew: true,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"days": {
+							Type:     schema.TypeInt,
+							Required: true,
+						},
+					},
+				},
+			},
+
+			"max_version": {
+				Type:     schema.TypeList,
+				Optional: true,
+				ForceNew: true,
+				Elem: &schema.Resource{
+					Schema: map[string]*schema.Schema{
+						"number": {
+							Type:     schema.TypeInt,
+							Required: true,
+						},
+					},
+				},
+			},
+
+			"project": {
+				Type:     schema.TypeString,
+				Optional: true,
+				Computed: true,
+				ForceNew: true,
+			},
+		},
+	}
+}
+
+func resourceBigtableGCPolicyCreate(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	ctx := context.Background()
+
+	project, err := getProject(d, config)
+	if err != nil {
+		return err
+	}
+
+	instanceName := d.Get("instance_name").(string)
+	c, err := config.bigtableClientFactory.NewAdminClient(project, instanceName)
+	if err != nil {
+		return fmt.Errorf("Error starting admin client. %s", err)
+	}
+
+	defer c.Close()
+
+	gcPolicy, err := generateBigtableGCPolicy(d)
+	if err != nil {
+		return err
+	}
+
+	tableName := d.Get("table").(string)
+	columnFamily := d.Get("column_family").(string)
+
+	if err := c.SetGCPolicy(ctx, tableName, columnFamily, gcPolicy); err != nil {
+		return err
+	}
+
+	table, err := c.TableInfo(ctx, tableName)
+	if err != nil {
+		return fmt.Errorf("Error retrieving table. Could not find %s in %s. %s", tableName, instanceName, err)
+	}
+
+	for _, i := range table.FamilyInfos {
+		if i.Name == columnFamily {
+			d.SetId(i.GCPolicy)
+		}
+	}
+
+	return resourceBigtableGCPolicyRead(d, meta)
+}
+
+func resourceBigtableGCPolicyRead(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	ctx := context.Background()
+
+	project, err := getProject(d, config)
+	if err != nil {
+		return err
+	}
+
+	instanceName := d.Get("instance_name").(string)
+	c, err := config.bigtableClientFactory.NewAdminClient(project, instanceName)
+	if err != nil {
+		return fmt.Errorf("Error starting admin client. %s", err)
+	}
+
+	defer c.Close()
+
+	name := d.Get("table").(string)
+	ti, err := c.TableInfo(ctx, name)
+	if err != nil {
+		log.Printf("[WARN] Removing %s because it's gone", name)
+		d.SetId("")
+		return fmt.Errorf("Error retrieving table. Could not find %s in %s. %s", name, instanceName, err)
+	}
+
+	for _, fi := range ti.FamilyInfos {
+		if fi.Name == name {
+			d.SetId(fi.GCPolicy)
+			break
+		}
+	}
+
+	d.Set("project", project)
+
+	return nil
+}
+
+func resourceBigtableGCPolicyDestroy(d *schema.ResourceData, meta interface{}) error {
+	config := meta.(*Config)
+	ctx := context.Background()
+
+	project, err := getProject(d, config)
+	if err != nil {
+		return err
+	}
+
+	instanceName := d.Get("instance_name").(string)
+	c, err := config.bigtableClientFactory.NewAdminClient(project, instanceName)
+	if err != nil {
+		return fmt.Errorf("Error starting admin client. %s", err)
+	}
+
+	defer c.Close()
+
+	if err := c.SetGCPolicy(ctx, d.Get("table").(string), d.Get("column_family").(string), bigtable.NoGcPolicy()); err != nil {
+		return err
+	}
+
+	d.SetId("")
+
+	return nil
+}
+
+func generateBigtableGCPolicy(d *schema.ResourceData) (bigtable.GCPolicy, error) {
+	var policies []bigtable.GCPolicy
+	mode := d.Get("mode").(string)
+	ma, aok := d.GetOk("max_age")
+	mv, vok := d.GetOk("max_version")
+
+	if !aok && !vok {
+		return bigtable.NoGcPolicy(), nil
+	}
+
+	if mode == "" && aok && vok {
+		return nil, fmt.Errorf("If multiple policies are set, mode can't be empty")
+	}
+
+	if aok {
+		l, _ := ma.([]interface{})
+		d, _ := l[0].(map[string]interface{})["days"].(int)
+
+		policies = append(policies, bigtable.MaxAgePolicy(time.Duration(d)*time.Hour*24))
+	}
+
+	if vok {
+		l, _ := mv.([]interface{})
+		n, _ := l[0].(map[string]interface{})["number"].(int)
+
+		policies = append(policies, bigtable.MaxVersionsPolicy(n))
+	}
+
+	switch mode {
+	case GCPolicyModeUnion:
+		return bigtable.UnionPolicy(policies...), nil
+	case GCPolicyModeIntersection:
+		return bigtable.IntersectionPolicy(policies...), nil
+	}
+
+	return policies[0], nil
+}