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block_fastly_service_v1_logging_kafka.go
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block_fastly_service_v1_logging_kafka.go
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package fastly
import (
"fmt"
"log"
"github.com/fastly/go-fastly/fastly"
gofastly "github.com/fastly/go-fastly/fastly"
"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
)
type KafkaServiceAttributeHandler struct {
*DefaultServiceAttributeHandler
}
func NewServiceLoggingKafka(sa ServiceMetadata) ServiceAttributeDefinition {
return &KafkaServiceAttributeHandler{
&DefaultServiceAttributeHandler{
key: "logging_kafka",
serviceMetadata: sa,
},
}
}
func (h *KafkaServiceAttributeHandler) Register(s *schema.Resource) error {
var blockAttributes = map[string]*schema.Schema{
// Required fields
"name": {
Type: schema.TypeString,
Required: true,
Description: "The unique name of the Kafka logging endpoint.",
},
"topic": {
Type: schema.TypeString,
Required: true,
Description: "The Kafka topic to send logs to.",
},
"brokers": {
Type: schema.TypeString,
Required: true,
Description: "A comma-separated list of IP addresses or hostnames of Kafka brokers.",
},
// Optional
"compression_codec": {
Type: schema.TypeString,
Optional: true,
Description: "The codec used for compression of your logs. One of: gzip, snappy, lz4.",
},
"required_acks": {
Type: schema.TypeString,
Optional: true,
Description: "The Number of acknowledgements blockAttributes leader must receive before blockAttributes write is considered successful. One of: 1 (default) One server needs to respond. 0 No servers need to respond. -1 Wait for all in-sync replicas to respond.",
},
"use_tls": {
Type: schema.TypeBool,
Optional: true,
Default: false,
Description: "Whether to use TLS for secure logging. Can be either true or false.",
},
"tls_ca_cert": {
Type: schema.TypeString,
Optional: true,
Description: "A secure certificate to authenticate the server with. Must be in PEM format.",
Sensitive: true,
// Related issue for weird behavior - https://github.com/hashicorp/terraform-plugin-sdk/issues/160
StateFunc: trimSpaceStateFunc,
},
"tls_client_cert": {
Type: schema.TypeString,
Optional: true,
Description: "The client certificate used to make authenticated requests. Must be in PEM format.",
Sensitive: true,
// Related issue for weird behavior - https://github.com/hashicorp/terraform-plugin-sdk/issues/160
StateFunc: trimSpaceStateFunc,
},
"tls_client_key": {
Type: schema.TypeString,
Optional: true,
Description: "The client private key used to make authenticated requests. Must be in PEM format.",
Sensitive: true,
// Related issue for weird behavior - https://github.com/hashicorp/terraform-plugin-sdk/issues/160
StateFunc: trimSpaceStateFunc,
},
"tls_hostname": {
Type: schema.TypeString,
Optional: true,
Description: "The hostname used to verify the server's certificate. It can either be the Common Name or blockAttributes Subject Alternative Name (SAN).",
},
}
if h.GetServiceMetadata().serviceType == ServiceTypeVCL {
blockAttributes["format"] = &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "Apache style log formatting.",
}
blockAttributes["format_version"] = &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Default: 2,
Description: "The version of the custom logging format used for the configured endpoint. Can be either 1 or 2. (default: 2).",
ValidateFunc: validateLoggingFormatVersion(),
}
blockAttributes["placement"] = &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "Where in the generated VCL the logging call should be placed.",
ValidateFunc: validateLoggingPlacement(),
}
blockAttributes["response_condition"] = &schema.Schema{
Type: schema.TypeString,
Optional: true,
Description: "The name of an existing condition in the configured endpoint, or leave blank to always execute.",
}
}
s.Schema[h.GetKey()] = &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Resource{
Schema: blockAttributes,
},
}
return nil
}
func (h *KafkaServiceAttributeHandler) Process(d *schema.ResourceData, latestVersion int, conn *gofastly.Client) error {
serviceID := d.Id()
oldLogCfg, newLogCfg := d.GetChange(h.GetKey())
if oldLogCfg == nil {
oldLogCfg = new(schema.Set)
}
if newLogCfg == nil {
newLogCfg = new(schema.Set)
}
oldLogSet := oldLogCfg.(*schema.Set)
newLogSet := newLogCfg.(*schema.Set)
removeKafkaLogging := oldLogSet.Difference(newLogSet).List()
addKafkaLogging := newLogSet.Difference(oldLogSet).List()
// DELETE old Kafka logging endpoints
for _, oRaw := range removeKafkaLogging {
of := oRaw.(map[string]interface{})
opts := h.buildDelete(of, serviceID, latestVersion)
log.Printf("[DEBUG] Fastly Kafka logging endpoint removal opts: %#v", opts)
if err := deleteKafka(conn, opts); err != nil {
return err
}
}
// POST new/updated Kafka logging endponts
for _, nRaw := range addKafkaLogging {
cfg := nRaw.(map[string]interface{})
// @HACK for a TF SDK Issue.
//
// This ensures that the required, `name`, field is present.
//
// If we have made it this far and `name` is not present, it is most-likely due
// to a defunct diff as noted here - https://github.com/hashicorp/terraform-plugin-sdk/issues/160#issuecomment-522935697.
//
// This is caused by using a StateFunc in a nested TypeSet. While the StateFunc
// properly handles setting state with the StateFunc, it returns extra entries
// during state Gets, specifically `GetChange("logging_kafka")` in this case.
if v, ok := cfg["name"]; !ok || v.(string) == "" {
continue
}
opts := h.buildCreate(cfg, serviceID, latestVersion)
log.Printf("[DEBUG] Fastly Kafka logging addition opts: %#v", opts)
if err := createKafka(conn, opts); err != nil {
return err
}
}
return nil
}
func (h *KafkaServiceAttributeHandler) Read(d *schema.ResourceData, s *gofastly.ServiceDetail, conn *gofastly.Client) error {
// refresh Kafka
log.Printf("[DEBUG] Refreshing Kafka logging endpoints for (%s)", d.Id())
kafkaList, err := conn.ListKafkas(&gofastly.ListKafkasInput{
Service: d.Id(),
Version: s.ActiveVersion.Number,
})
if err != nil {
return fmt.Errorf("[ERR] Error looking up Kafka logging endpoints for (%s), version (%v): %s", d.Id(), s.ActiveVersion.Number, err)
}
kafkaLogList := flattenKafka(kafkaList)
if err := d.Set(h.GetKey(), kafkaLogList); err != nil {
log.Printf("[WARN] Error setting Kafka logging endpoints for (%s): %s", d.Id(), err)
}
return nil
}
func createKafka(conn *gofastly.Client, i *gofastly.CreateKafkaInput) error {
_, err := conn.CreateKafka(i)
return err
}
func deleteKafka(conn *gofastly.Client, i *gofastly.DeleteKafkaInput) error {
err := conn.DeleteKafka(i)
if errRes, ok := err.(*gofastly.HTTPError); ok {
if errRes.StatusCode != 404 {
return err
}
} else if err != nil {
return err
}
return nil
}
func flattenKafka(kafkaList []*gofastly.Kafka) []map[string]interface{} {
var flattened []map[string]interface{}
for _, s := range kafkaList {
// Convert logging to a map for saving to state.
flatKafka := map[string]interface{}{
"name": s.Name,
"topic": s.Topic,
"brokers": s.Brokers,
"compression_codec": s.CompressionCodec,
"required_acks": s.RequiredACKs,
"use_tls": s.UseTLS,
"tls_ca_cert": s.TLSCACert,
"tls_client_cert": s.TLSClientCert,
"tls_client_key": s.TLSClientKey,
"tls_hostname": s.TLSHostname,
"format": s.Format,
"format_version": s.FormatVersion,
"placement": s.Placement,
"response_condition": s.ResponseCondition,
}
// prune any empty values that come from the default string value in structs
for k, v := range flatKafka {
if v == "" {
delete(flatKafka, k)
}
}
flattened = append(flattened, flatKafka)
}
return flattened
}
func (h *KafkaServiceAttributeHandler) buildCreate(kafkaMap interface{}, serviceID string, serviceVersion int) *gofastly.CreateKafkaInput {
df := kafkaMap.(map[string]interface{})
var vla = h.getVCLLoggingAttributes(df)
return &gofastly.CreateKafkaInput{
Service: serviceID,
Version: serviceVersion,
Name: fastly.NullString(df["name"].(string)),
Brokers: fastly.NullString(df["brokers"].(string)),
Topic: fastly.NullString(df["topic"].(string)),
RequiredACKs: fastly.NullString(df["required_acks"].(string)),
UseTLS: fastly.CBool(df["use_tls"].(bool)),
CompressionCodec: fastly.NullString(df["compression_codec"].(string)),
TLSCACert: fastly.NullString(df["tls_ca_cert"].(string)),
TLSClientCert: fastly.NullString(df["tls_client_cert"].(string)),
TLSClientKey: fastly.NullString(df["tls_client_key"].(string)),
TLSHostname: fastly.NullString(df["tls_hostname"].(string)),
Format: gofastly.NullString(vla.format),
FormatVersion: vla.formatVersion,
Placement: gofastly.NullString(vla.placement),
ResponseCondition: gofastly.NullString(vla.responseCondition),
}
}
func (h *KafkaServiceAttributeHandler) buildDelete(kafkaMap interface{}, serviceID string, serviceVersion int) *gofastly.DeleteKafkaInput {
df := kafkaMap.(map[string]interface{})
return &gofastly.DeleteKafkaInput{
Service: serviceID,
Version: serviceVersion,
Name: df["name"].(string),
}
}