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block_fastly_service_v1_splunk.go
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block_fastly_service_v1_splunk.go
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package fastly
import (
"fmt"
"log"
gofastly "github.com/fastly/go-fastly/v2/fastly"
"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
)
type SplunkServiceAttributeHandler struct {
*DefaultServiceAttributeHandler
}
func NewServiceSplunk(sa ServiceMetadata) ServiceAttributeDefinition {
return &SplunkServiceAttributeHandler{
&DefaultServiceAttributeHandler{
key: "splunk",
serviceMetadata: sa,
},
}
}
func (h *SplunkServiceAttributeHandler) 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)
remove := oss.Difference(nss).List()
add := nss.Difference(oss).List()
// DELETE old Splunk logging configurations
for _, sRaw := range remove {
sf := sRaw.(map[string]interface{})
opts := gofastly.DeleteSplunkInput{
Service: d.Id(),
Version: latestVersion,
Name: sf["name"].(string),
}
log.Printf("[DEBUG] Splunk removal opts: %#v", opts)
err := conn.DeleteSplunk(&opts)
if errRes, ok := err.(*gofastly.HTTPError); ok {
if errRes.StatusCode != 404 {
return err
}
} else if err != nil {
return err
}
}
// POST new/updated Splunk configurations
for _, sRaw := range add {
sf := sRaw.(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("splunk")` in this case.
if v, ok := sf["name"]; !ok || v.(string) == "" {
continue
}
var vla = h.getVCLLoggingAttributes(sf)
opts := gofastly.CreateSplunkInput{
Service: d.Id(),
Version: latestVersion,
Name: sf["name"].(string),
URL: sf["url"].(string),
Token: sf["token"].(string),
TLSHostname: sf["tls_hostname"].(string),
TLSCACert: sf["tls_ca_cert"].(string),
Format: vla.format,
FormatVersion: uintOrDefault(vla.formatVersion),
ResponseCondition: vla.responseCondition,
Placement: vla.placement,
}
log.Printf("[DEBUG] Splunk create opts: %#v", opts)
_, err := conn.CreateSplunk(&opts)
if err != nil {
return err
}
}
return nil
}
func (h *SplunkServiceAttributeHandler) Read(d *schema.ResourceData, s *gofastly.ServiceDetail, conn *gofastly.Client) error {
log.Printf("[DEBUG] Refreshing Splunks for (%s)", d.Id())
splunkList, err := conn.ListSplunks(&gofastly.ListSplunksInput{
Service: d.Id(),
Version: s.ActiveVersion.Number,
})
if err != nil {
return fmt.Errorf("[ERR] Error looking up Splunks for (%s), version (%v): %s", d.Id(), s.ActiveVersion.Number, err)
}
spl := flattenSplunks(splunkList)
if err := d.Set(h.GetKey(), spl); err != nil {
log.Printf("[WARN] Error setting Splunks for (%s): %s", d.Id(), err)
}
return nil
}
func (h *SplunkServiceAttributeHandler) 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 Splunk logging endpoint",
},
"url": {
Type: schema.TypeString,
Required: true,
Description: "The Splunk URL to stream logs to",
},
"token": {
Type: schema.TypeString,
Required: true,
DefaultFunc: schema.EnvDefaultFunc("FASTLY_SPLUNK_TOKEN", ""),
Description: "The Splunk token to be used for authentication",
Sensitive: true,
},
// Optional fields
"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).",
},
"tls_ca_cert": {
Type: schema.TypeString,
Optional: true,
DefaultFunc: schema.EnvDefaultFunc("FASTLY_SPLUNK_CA_CERT", ""),
Description: "A secure certificate to authenticate the server with. Must be in PEM format. You can provide this certificate via an environment variable, `FASTLY_SPLUNK_CA_CERT`.",
},
}
if h.GetServiceMetadata().serviceType == ServiceTypeVCL {
blockAttributes["format"] = &schema.Schema{
Type: schema.TypeString,
Optional: true,
Default: "%h %l %u %t \"%r\" %>s %b",
Description: "Apache-style string or VCL variables to use for log formatting (default: `%h %l %u %t \"%r\" %>s %b`)",
}
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 the condition to apply",
}
}
s.Schema[h.GetKey()] = &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Resource{
Schema: blockAttributes,
},
}
return nil
}
func flattenSplunks(splunkList []*gofastly.Splunk) []map[string]interface{} {
var sl []map[string]interface{}
for _, s := range splunkList {
// Convert Splunk to a map for saving to state.
nbs := map[string]interface{}{
"name": s.Name,
"url": s.URL,
"format": s.Format,
"format_version": s.FormatVersion,
"response_condition": s.ResponseCondition,
"placement": s.Placement,
"token": s.Token,
"tls_hostname": s.TLSHostname,
"tls_ca_cert": s.TLSCACert,
}
// prune any empty values that come from the default string value in structs
for k, v := range nbs {
if v == "" {
delete(nbs, k)
}
}
sl = append(sl, nbs)
}
return sl
}