block_fastly_service_v1_sumologic.go

package fastly

import (
	"context"
	"fmt"
	"log"

	gofastly "github.com/fastly/go-fastly/v3/fastly"
	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
)

type SumologicServiceAttributeHandler struct {
	*DefaultServiceAttributeHandler
}

func NewServiceSumologic(sa ServiceMetadata) ServiceAttributeDefinition {
	return ToServiceAttributeDefinition(&SumologicServiceAttributeHandler{
		&DefaultServiceAttributeHandler{
			key:             "sumologic",
			serviceMetadata: sa,
		},
	})
}

func (h *SumologicServiceAttributeHandler) Key() string { return h.key }

func (h *SumologicServiceAttributeHandler) GetSchema() *schema.Schema {
	var blockAttributes = map[string]*schema.Schema{
		// Required fields
		"name": {
			Type:        schema.TypeString,
			Required:    true,
			Description: "A unique name to identify this Sumologic endpoint. It is important to note that changing this attribute will delete and recreate the resource",
		},
		"url": {
			Type:        schema.TypeString,
			Required:    true,
			Description: "The URL to Sumologic collector endpoint",
		},
		// Optional fields
		"message_type": {
			Type:             schema.TypeString,
			Optional:         true,
			Default:          "classic",
			Description:      "How the message should be formatted; one of: `classic`, `loggly`, `logplex` or `blank`. Default `classic`. See [Fastly's Documentation on Sumologic](https://developer.fastly.com/reference/api/logging/sumologic/)",
			ValidateDiagFunc: validateLoggingMessageType(),
		},
	}

	if h.GetServiceMetadata().serviceType == ServiceTypeVCL {
		blockAttributes["format"] = &schema.Schema{
			Type:        schema.TypeString,
			Optional:    true,
			Default:     "%h %l %u %t %r %>s",
			Description: "Apache-style string or VCL variables to use for log formatting",
		}
		blockAttributes["format_version"] = &schema.Schema{
			Type:             schema.TypeInt,
			Optional:         true,
			Default:          1,
			Description:      "The version of the custom logging format used for the configured endpoint. Can be either 1 or 2. (Default: 1)",
			ValidateDiagFunc: validateLoggingFormatVersion(),
		}
		blockAttributes["response_condition"] = &schema.Schema{
			Type:        schema.TypeString,
			Optional:    true,
			Default:     "",
			Description: "Name of blockAttributes condition to apply this logging.",
		}
		blockAttributes["placement"] = &schema.Schema{
			Type:             schema.TypeString,
			Optional:         true,
			Description:      "Where in the generated VCL the logging call should be placed.",
			ValidateDiagFunc: validateLoggingPlacement(),
		}
	}

	return &schema.Schema{
		Type:     schema.TypeSet,
		Optional: true,
		Elem: &schema.Resource{
			Schema: blockAttributes,
		},
	}
}

func (h *SumologicServiceAttributeHandler) Create(_ context.Context, d *schema.ResourceData, resource map[string]interface {
}, serviceVersion int, conn *gofastly.Client) error {
	var vla = h.getVCLLoggingAttributes(resource)
	opts := gofastly.CreateSumologicInput{
		ServiceID:         d.Id(),
		ServiceVersion:    serviceVersion,
		Name:              resource["name"].(string),
		URL:               resource["url"].(string),
		MessageType:       resource["message_type"].(string),
		Format:            vla.format,
		FormatVersion:     int(uintOrDefault(vla.formatVersion)),
		ResponseCondition: vla.responseCondition,
		Placement:         vla.placement,
	}

	log.Printf("[DEBUG] Create Sumologic Opts: %#v", opts)
	_, err := conn.CreateSumologic(&opts)
	if err != nil {
		return err
	}
	return nil
}

func (h *SumologicServiceAttributeHandler) Read(_ context.Context, d *schema.ResourceData, _ map[string]interface{}, serviceVersion int, conn *gofastly.Client) error {
	log.Printf("[DEBUG] Refreshing Sumologic for (%s)", d.Id())
	sumologicList, err := conn.ListSumologics(&gofastly.ListSumologicsInput{
		ServiceID:      d.Id(),
		ServiceVersion: serviceVersion,
	})

	if err != nil {
		return fmt.Errorf("[ERR] Error looking up Sumologic for (%s), version (%v): %s", d.Id(), serviceVersion, err)
	}

	sul := flattenSumologics(sumologicList)

	for _, element := range sul {
		element = h.pruneVCLLoggingAttributes(element)
	}

	if err := d.Set(h.GetKey(), sul); err != nil {
		log.Printf("[WARN] Error setting Sumologic for (%s): %s", d.Id(), err)
	}
	return nil
}

func (h *SumologicServiceAttributeHandler) Update(_ context.Context, d *schema.ResourceData, resource, modified map[string]interface {
}, serviceVersion int, conn *gofastly.Client) error {
	opts := gofastly.UpdateSumologicInput{
		ServiceID:      d.Id(),
		ServiceVersion: serviceVersion,
		Name:           resource["name"].(string),
	}

	// NOTE: where we transition between interface{} we lose the ability to
	// infer the underlying type being either a uint vs an int. This
	// materializes as a panic (yay) and so it's only at runtime we discover
	// this and so we've updated the below code to convert the type asserted
	// int into a uint before passing the value to gofastly.Uint().
	if v, ok := modified["address"]; ok {
		opts.Address = gofastly.String(v.(string))
	}
	if v, ok := modified["url"]; ok {
		opts.URL = gofastly.String(v.(string))
	}
	if v, ok := modified["format"]; ok {
		opts.Format = gofastly.String(v.(string))
	}
	if v, ok := modified["response_condition"]; ok {
		opts.ResponseCondition = gofastly.String(v.(string))
	}
	if v, ok := modified["message_type"]; ok {
		opts.MessageType = gofastly.String(v.(string))
	}
	if v, ok := modified["format_version"]; ok {
		opts.FormatVersion = gofastly.Int(v.(int))
	}
	if v, ok := modified["placement"]; ok {
		opts.Placement = gofastly.String(v.(string))
	}

	log.Printf("[DEBUG] Update Sumologic Opts: %#v", opts)
	_, err := conn.UpdateSumologic(&opts)
	if err != nil {
		return err
	}
	return nil
}

func (h *SumologicServiceAttributeHandler) Delete(_ context.Context, d *schema.ResourceData, resource map[string]interface {
}, serviceVersion int, conn *gofastly.Client) error {
	opts := gofastly.DeleteSumologicInput{
		ServiceID:      d.Id(),
		ServiceVersion: serviceVersion,
		Name:           resource["name"].(string),
	}

	log.Printf("[DEBUG] Fastly Sumologic removal opts: %#v", opts)
	err := conn.DeleteSumologic(&opts)
	if errRes, ok := err.(*gofastly.HTTPError); ok {
		if errRes.StatusCode != 404 {
			return err
		}
	} else if err != nil {
		return err
	}
	return nil
}

func flattenSumologics(sumologicList []*gofastly.Sumologic) []map[string]interface{} {
	var l []map[string]interface{}
	for _, p := range sumologicList {
		// Convert Sumologic to a map for saving to state.
		ns := map[string]interface{}{
			"name":               p.Name,
			"url":                p.URL,
			"format":             p.Format,
			"response_condition": p.ResponseCondition,
			"message_type":       p.MessageType,
			"format_version":     int(p.FormatVersion),
			"placement":          p.Placement,
		}

		// prune any empty values that come from the default string value in structs
		for k, v := range ns {
			if v == "" {
				delete(ns, k)
			}
		}

		l = append(l, ns)
	}

	return l
}