block_fastly_service_v1_gcslogging.go

package fastly

import (
	"fmt"
	"log"

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

type GCSLoggingServiceAttributeHandler struct {
	*DefaultServiceAttributeHandler
}

func NewServiceGCSLogging(sa ServiceMetadata) ServiceAttributeDefinition {
	return &GCSLoggingServiceAttributeHandler{
		&DefaultServiceAttributeHandler{
			key:             "gcslogging",
			serviceMetadata: sa,
		},
	}
}

func (h *GCSLoggingServiceAttributeHandler) Process(d *schema.ResourceData, latestVersion int, conn *gofastly.Client) error {
	os, ns := d.GetChange(h.GetKey())
	if os == nil {
		os = new(schema.Set)
	}
	if ns == nil {
		ns = new(schema.Set)
	}

	oss := os.(*schema.Set)
	nss := ns.(*schema.Set)
	removeGcslogging := oss.Difference(nss).List()
	addGcslogging := nss.Difference(oss).List()

	// DELETE old gcslogging configurations
	for _, pRaw := range removeGcslogging {
		sf := pRaw.(map[string]interface{})
		opts := gofastly.DeleteGCSInput{
			Service: d.Id(),
			Version: latestVersion,
			Name:    sf["name"].(string),
		}

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

	// POST new/updated gcslogging
	for _, pRaw := range addGcslogging {
		sf := pRaw.(map[string]interface{})
		var vla = h.getVCLLoggingAttributes(sf)
		opts := gofastly.CreateGCSInput{
			Service:           d.Id(),
			Version:           latestVersion,
			Name:              sf["name"].(string),
			User:              sf["email"].(string),
			Bucket:            sf["bucket_name"].(string),
			SecretKey:         sf["secret_key"].(string),
			Path:              sf["path"].(string),
			Period:            uint(sf["period"].(int)),
			GzipLevel:         uint8(sf["gzip_level"].(int)),
			TimestampFormat:   sf["timestamp_format"].(string),
			MessageType:       sf["message_type"].(string),
			Format:            vla.format,
			ResponseCondition: vla.responseCondition,
			Placement:         vla.placement,
		}

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

func (h *GCSLoggingServiceAttributeHandler) Read(d *schema.ResourceData, s *gofastly.ServiceDetail, conn *gofastly.Client) error {
	log.Printf("[DEBUG] Refreshing GCS for (%s)", d.Id())
	GCSList, err := conn.ListGCSs(&gofastly.ListGCSsInput{
		Service: d.Id(),
		Version: s.ActiveVersion.Number,
	})

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

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

	return nil
}

func (h *GCSLoggingServiceAttributeHandler) Register(s *schema.Resource) error {
	var blockAttributes = map[string]*schema.Schema{
		// Required fields
		"name": {
			Type:        schema.TypeString,
			Required:    true,
			Description: "Unique name to refer to this logging setup",
		},
		"email": {
			Type:        schema.TypeString,
			Optional:    true,
			DefaultFunc: schema.EnvDefaultFunc("FASTLY_GCS_EMAIL", ""),
			Description: "The email address associated with the target GCS bucket on your account.",
		},
		"bucket_name": {
			Type:        schema.TypeString,
			Required:    true,
			Description: "The name of the bucket in which to store the logs.",
		},
		"secret_key": {
			Type:        schema.TypeString,
			Optional:    true,
			DefaultFunc: schema.EnvDefaultFunc("FASTLY_GCS_SECRET_KEY", ""),
			Description: "The secret key associated with the target gcs bucket on your account.",
			Sensitive:   true,
		},
		// Optional fields
		"path": {
			Type:        schema.TypeString,
			Optional:    true,
			Description: "Path to store the files. Must end with a trailing slash",
		},
		"gzip_level": {
			Type:        schema.TypeInt,
			Optional:    true,
			Default:     0,
			Description: "Gzip Compression level",
		},
		"period": {
			Type:        schema.TypeInt,
			Optional:    true,
			Default:     3600,
			Description: "How frequently the logs should be transferred, in seconds (Default 3600)",
		},
		"timestamp_format": {
			Type:        schema.TypeString,
			Optional:    true,
			Default:     "%Y-%m-%dT%H:%M:%S.000",
			Description: "specified timestamp formatting (default `%Y-%m-%dT%H:%M:%S.000`)",
		},
		"message_type": {
			Type:         schema.TypeString,
			Optional:     true,
			Default:      "classic",
			Description:  "The log message type per the fastly docs: https://docs.fastly.com/api/logging#logging_gcs",
			ValidateFunc: 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["response_condition"] = &schema.Schema{
			Type:        schema.TypeString,
			Optional:    true,
			Default:     "",
			Description: "Name of a 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.",
			ValidateFunc: validateLoggingPlacement(),
		}
	}

	s.Schema[h.GetKey()] = &schema.Schema{
		Type:     schema.TypeSet,
		Optional: true,
		Elem: &schema.Resource{
			Schema: blockAttributes,
		},
	}
	return nil
}

func flattenGCS(gcsList []*gofastly.GCS) []map[string]interface{} {
	var GCSList []map[string]interface{}
	for _, currentGCS := range gcsList {
		// Convert gcs to a map for saving to state.
		GCSMapString := map[string]interface{}{
			"name":               currentGCS.Name,
			"email":              currentGCS.User,
			"bucket_name":        currentGCS.Bucket,
			"secret_key":         currentGCS.SecretKey,
			"path":               currentGCS.Path,
			"period":             int(currentGCS.Period),
			"gzip_level":         int(currentGCS.GzipLevel),
			"response_condition": currentGCS.ResponseCondition,
			"message_type":       currentGCS.MessageType,
			"format":             currentGCS.Format,
			"timestamp_format":   currentGCS.TimestampFormat,
			"placement":          currentGCS.Placement,
		}

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

		GCSList = append(GCSList, GCSMapString)
	}

	return GCSList
}