feat(ibm): add databases-for-postgresql support

internal/providers/terraform/ibm/database.go

@@ -0,0 +1,39 @@
+package ibm
+
+import (
+	"github.com/infracost/infracost/internal/resources/ibm"
+	"github.com/infracost/infracost/internal/schema"
+)
+
+func getDatabaseRegistryItem() *schema.RegistryItem {
+	return &schema.RegistryItem{
+		Name:  "ibm_database",
+		RFunc: newDatabase,
+	}
+}
+
+func newDatabase(d *schema.ResourceData, u *schema.UsageData) *schema.Resource {
+	plan := d.Get("plan").String()
+	location := d.Get("location").String()
+	service := d.Get("service").String()
+	name := d.Get("name").String()
+
+	r := &ibm.Database{
+		Name:     name,
+		Address:  d.Address,
+		Service:  service,
+		Plan:     plan,
+		Location: location,
+		Group:    d.RawValues,
+	}
+	r.PopulateUsage(u)
+
+	configuration := make(map[string]any)
+	configuration["service"] = service
+	configuration["plan"] = plan
+	configuration["location"] = location
+
+	SetCatalogMetadata(d, service, configuration)
+
+	return r.BuildResource()
+}

internal/providers/terraform/ibm/database_test.go

@@ -0,0 +1,16 @@
+package ibm_test
+
+import (
+	"testing"
+
+	"github.com/infracost/infracost/internal/providers/terraform/tftest"
+)
+
+func TestDatabase(t *testing.T) {
+	t.Parallel()
+	if testing.Short() {
+		t.Skip("skipping test in short mode")
+	}
+
+	tftest.GoldenFileResourceTests(t, "database_test")
+}

internal/providers/terraform/ibm/registry.go

@@ -19,6 +19,7 @@ var ResourceRegistry []*schema.RegistryItem = []*schema.RegistryItem{
 	getIsLbRegistryItem(),
 	getIsPublicGatewayRegistryItem(),
 	getIbmPiVolumeRegistryItem(),
+	getDatabaseRegistryItem(),
 }
 
 // FreeResources grouped alphabetically

internal/providers/terraform/ibm/testdata/database_test/database_test.golden

@@ -0,0 +1,16 @@
+
+ Name                   Monthly Qty  Unit                    Monthly Cost 
+
+ ibm_database.test_db1                                                    
+ ├─ RAM                          24  GB-RAM                       $129.36 
+ ├─ Disk                        256  GB-DISK                      $161.28 
+ └─ Core                          6  Virtual Processor Core       $193.80 
+
+ ibm_database.test_db2                                                    
+ ├─ RAM                          60  GB-RAM                       $323.40 
+ └─ Disk                         20  GB-DISK                       $12.60 
+
+ OVERALL TOTAL                                                    $820.44 
+──────────────────────────────────
+2 cloud resources were detected:
+∙ 2 were estimated

internal/providers/terraform/ibm/testdata/database_test/database_test.tf

@@ -0,0 +1,50 @@
+
+terraform {
+  required_providers {
+    ibm = {
+      source  = "IBM-Cloud/ibm"
+      version = "1.61.0"
+    }
+  }
+}
+
+provider "ibm" {
+  region = "us-south"
+}
+
+resource "ibm_database" "test_db1" {
+  name     = "demo-postgres"
+  service  = "databases-for-postgresql"
+  plan     = "standard"
+  location = "eu-gb"
+
+  group {
+    group_id = "member"
+    memory {
+      allocation_mb = 12288
+    }
+    disk {
+      allocation_mb = 131072
+    }
+    cpu {
+      allocation_count = 3
+    }
+  }
+}
+
+resource "ibm_database" "test_db2" {
+  name     = "demo-postgres2"
+  service  = "databases-for-postgresql"
+  plan     = "standard"
+  location = "eu-gb"
+
+  group {
+    group_id = "member"
+    memory {
+      allocation_mb = 15360
+    }
+    members {
+      allocation_count = 4
+    }
+  }
+}

internal/providers/terraform/ibm/testdata/database_test/database_test.usage.yml

@@ -0,0 +1,9 @@
+version: 0.1
+resource_usage:
+  ibm_database.test_db1:
+    database_ram_mb: 12288
+    database_disk_mb: 131072
+    database_core: 3
+  ibm_database.test_db2:
+    database_ram_mb: 15360
+    database_members: 4

internal/resources/ibm/database.go

@@ -0,0 +1,190 @@
+package ibm
+
+import (
+	"github.com/infracost/infracost/internal/resources"
+	"github.com/infracost/infracost/internal/schema"
+	"github.com/shopspring/decimal"
+	"github.com/tidwall/gjson"
+)
+
+// Database struct represents a database instance
+//
+// This terraform resource is opaque and can handle multiple databases, provided with the right parameters
+type Database struct {
+	Name     string
+	Address  string
+	Service  string
+	Plan     string
+	Location string
+	Group    gjson.Result
+
+	// Databases For PostgreSQL
+	// Catalog Link: https://cloud.ibm.com/catalog/services/databases-for-postgresql
+	// Pricing Link: https://cloud.ibm.com/docs/databases-for-postgresql?topic=databases-for-postgresql-pricing
+	RAM     *int64 `infracost_usage:"database_ram_mb"`
+	Disk    *int64 `infracost_usage:"database_disk_mb"`
+	Core    *int64 `infracost_usage:"database_core"`
+	Members *int64 `infracost_usage:"database_members"`
+}
+
+type DatabaseCostComponentsFunc func(*Database) []*schema.CostComponent
+
+// PopulateUsage parses the u schema.UsageData into the Database.
+// It uses the `infracost_usage` struct tags to populate data into the Database.
+func (r *Database) PopulateUsage(u *schema.UsageData) {
+	resources.PopulateArgsWithUsage(r, u)
+}
+
+// DatabaseUsageSchema defines a list which represents the usage schema of Database.
+var DatabaseUsageSchema = []*schema.UsageItem{
+	{Key: "database_ram_mb", DefaultValue: 0, ValueType: schema.Int64},
+	{Key: "database_disk_mb", DefaultValue: 0, ValueType: schema.Int64},
+	{Key: "database_core", DefaultValue: 0, ValueType: schema.Int64},
+	{Key: "database_members", DefaultValue: 0, ValueType: schema.Int64},
+}
+
+var DatabaseCostMap map[string]DatabaseCostComponentsFunc = map[string]DatabaseCostComponentsFunc{
+	"databases-for-postgresql": GetPostgresCostComponents,
+	// "databases-for-etcd":
+	// "databases-for-redis":
+	// "databases-for-elasticsearch":
+	// "messages-for-rabbitmq":
+	// "databases-for-mongodb":
+	// "databases-for-mysql":
+	// "databases-for-cassandra":
+	// "databases-for-enterprisedb"
+}
+
+func ConvertMBtoGB(d decimal.Decimal) decimal.Decimal {
+	return d.Div(decimal.NewFromInt(1024))
+}
+
+func PostgresRAMCostComponent(r *Database) *schema.CostComponent {
+	var R decimal.Decimal
+	if r.RAM != nil {
+		R = ConvertMBtoGB(decimal.NewFromInt(*r.RAM))
+	} else { // set the default
+		R = decimal.NewFromInt(1)
+	}
+	var m decimal.Decimal
+	if r.Members != nil {
+		m = decimal.NewFromInt(*r.Members)
+	} else { // set the default
+		m = decimal.NewFromInt(2)
+	}
+
+	cost := R.Mul(m)
+
+	costComponent := schema.CostComponent{
+		Name:            "RAM",
+		Unit:            "GB-RAM",
+		MonthlyQuantity: &cost,
+		UnitMultiplier:  decimal.NewFromInt(1),
+		ProductFilter: &schema.ProductFilter{
+			VendorName:    strPtr("ibm"),
+			Region:        strPtr(r.Location),
+			Service:       strPtr("databases-for-postgresql"),
+			ProductFamily: strPtr("service"),
+		},
+		PriceFilter: &schema.PriceFilter{
+			Unit: strPtr("GIGABYTE_MONTHS_RAM"),
+		},
+	}
+	return &costComponent
+}
+
+func PostgresDiskCostComponent(r *Database) *schema.CostComponent {
+	var d decimal.Decimal
+	if r.Disk != nil {
+		d = ConvertMBtoGB(decimal.NewFromInt(*r.Disk))
+	} else { // set the default
+		d = decimal.NewFromInt(5)
+	}
+	var m decimal.Decimal
+	if r.Members != nil {
+		m = decimal.NewFromInt(*r.Members)
+	} else { // set the default
+		m = decimal.NewFromInt(2)
+	}
+
+	cost := d.Mul(m)
+
+	costComponent := schema.CostComponent{
+		Name:            "Disk",
+		Unit:            "GB-DISK",
+		MonthlyQuantity: &cost,
+		UnitMultiplier:  decimal.NewFromInt(1),
+		ProductFilter: &schema.ProductFilter{
+			VendorName:    strPtr("ibm"),
+			Region:        strPtr(r.Location),
+			Service:       strPtr("databases-for-postgresql"),
+			ProductFamily: strPtr("service"),
+		},
+		PriceFilter: &schema.PriceFilter{
+			Unit: strPtr("GIGABYTE_MONTHS_DISK"),
+		},
+	}
+	return &costComponent
+}
+
+func PostgresCoreCostComponent(r *Database) *schema.CostComponent {
+	var c decimal.Decimal
+	if r.Core != nil {
+		c = decimal.NewFromInt(*r.Core)
+	} else { // set the default
+		c = decimal.NewFromInt(0)
+	}
+	var m decimal.Decimal
+	if r.Members != nil {
+		m = decimal.NewFromInt(*r.Members)
+	} else { // set the default
+		m = decimal.NewFromInt(2)
+	}
+
+	cost := c.Mul(m)
+
+	costComponent := schema.CostComponent{
+		Name:            "Core",
+		Unit:            "Virtual Processor Core",
+		MonthlyQuantity: &cost,
+		UnitMultiplier:  decimal.NewFromInt(1),
+		ProductFilter: &schema.ProductFilter{
+			VendorName:    strPtr("ibm"),
+			Region:        strPtr(r.Location),
+			Service:       strPtr("databases-for-postgresql"),
+			ProductFamily: strPtr("service"),
+		},
+		PriceFilter: &schema.PriceFilter{
+			Unit: strPtr("VIRTUAL_PROCESSOR_CORES"),
+		},
+	}
+	return &costComponent
+}
+
+func GetPostgresCostComponents(r *Database) []*schema.CostComponent {
+	return []*schema.CostComponent{
+		PostgresRAMCostComponent(r),
+		PostgresDiskCostComponent(r),
+		PostgresCoreCostComponent(r),
+	}
+}
+
+// BuildResource builds a schema.Resource from a valid Database struct.
+// This method is called after the resource is initialised by an IaC provider.
+// See providers folder for more information.
+func (r *Database) BuildResource() *schema.Resource {
+	costComponentsFunc, ok := DatabaseCostMap[r.Service]
+
+	if !ok {
+		return &schema.Resource{
+			Name:        r.Address,
+			UsageSchema: DatabaseUsageSchema,
+		}
+	}
+
+	return &schema.Resource{
+		Name:           r.Address,
+		UsageSchema:    DatabaseUsageSchema,
+		CostComponents: costComponentsFunc(r),
+	}
+}