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block_fastly_service_v1_healthcheck.go
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block_fastly_service_v1_healthcheck.go
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package fastly
import (
"context"
"fmt"
"log"
gofastly "github.com/fastly/go-fastly/v5/fastly"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
)
type HealthCheckServiceAttributeHandler struct {
*DefaultServiceAttributeHandler
}
func NewServiceHealthCheck(sa ServiceMetadata) ServiceAttributeDefinition {
return ToServiceAttributeDefinition(&HealthCheckServiceAttributeHandler{
&DefaultServiceAttributeHandler{
key: "healthcheck",
serviceMetadata: sa,
},
})
}
func (h *HealthCheckServiceAttributeHandler) Key() string { return h.key }
func (h *HealthCheckServiceAttributeHandler) GetSchema() *schema.Schema {
return &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
// required fields
"name": {
Type: schema.TypeString,
Required: true,
Description: "A unique name to identify this Healthcheck. It is important to note that changing this attribute will delete and recreate the resource",
},
"host": {
Type: schema.TypeString,
Required: true,
Description: "The Host header to send for this Healthcheck",
},
"path": {
Type: schema.TypeString,
Required: true,
Description: "The path to check",
},
// optional fields
"check_interval": {
Type: schema.TypeInt,
Optional: true,
Default: 5000,
Description: "How often to run the Healthcheck in milliseconds. Default `5000`",
},
"expected_response": {
Type: schema.TypeInt,
Optional: true,
Default: 200,
Description: "The status code expected from the host. Default `200`",
},
"http_version": {
Type: schema.TypeString,
Optional: true,
Default: "1.1",
Description: "Whether to use version 1.0 or 1.1 HTTP. Default `1.1`",
},
"initial": {
Type: schema.TypeInt,
Optional: true,
Default: 3,
Description: "When loading a config, the initial number of probes to be seen as OK. Default `3`",
},
"method": {
Type: schema.TypeString,
Optional: true,
Default: "HEAD",
Description: "Which HTTP method to use. Default `HEAD`",
},
"threshold": {
Type: schema.TypeInt,
Optional: true,
Default: 3,
Description: "How many Healthchecks must succeed to be considered healthy. Default `3`",
},
"timeout": {
Type: schema.TypeInt,
Optional: true,
Default: 500,
Description: "Timeout in milliseconds. Default `500`",
},
"window": {
Type: schema.TypeInt,
Optional: true,
Default: 5,
Description: "The number of most recent Healthcheck queries to keep for this Healthcheck. Default `5`",
},
},
},
}
}
func (h *HealthCheckServiceAttributeHandler) Create(_ context.Context, d *schema.ResourceData, resource map[string]interface {
}, serviceVersion int, conn *gofastly.Client) error {
opts := gofastly.CreateHealthCheckInput{
ServiceID: d.Id(),
ServiceVersion: serviceVersion,
Name: resource["name"].(string),
Host: resource["host"].(string),
Path: resource["path"].(string),
CheckInterval: uint(resource["check_interval"].(int)),
ExpectedResponse: uint(resource["expected_response"].(int)),
HTTPVersion: resource["http_version"].(string),
Initial: uint(resource["initial"].(int)),
Method: resource["method"].(string),
Threshold: uint(resource["threshold"].(int)),
Timeout: uint(resource["timeout"].(int)),
Window: uint(resource["window"].(int)),
}
log.Printf("[DEBUG] Create Healthcheck Opts: %#v", opts)
_, err := conn.CreateHealthCheck(&opts)
if err != nil {
return err
}
return nil
}
func (h *HealthCheckServiceAttributeHandler) Read(_ context.Context, d *schema.ResourceData, _ map[string]interface{}, serviceVersion int, conn *gofastly.Client) error {
log.Printf("[DEBUG] Refreshing Healthcheck for (%s)", d.Id())
healthcheckList, err := conn.ListHealthChecks(&gofastly.ListHealthChecksInput{
ServiceID: d.Id(),
ServiceVersion: serviceVersion,
})
if err != nil {
return fmt.Errorf("[ERR] Error looking up Healthcheck for (%s), version (%v): %s", d.Id(), serviceVersion, err)
}
hcl := flattenHealthchecks(healthcheckList)
if err := d.Set(h.GetKey(), hcl); err != nil {
log.Printf("[WARN] Error setting Healthcheck for (%s): %s", d.Id(), err)
}
return nil
}
func (h *HealthCheckServiceAttributeHandler) Update(_ context.Context, d *schema.ResourceData, resource, modified map[string]interface {
}, serviceVersion int, conn *gofastly.Client) error {
opts := gofastly.UpdateHealthCheckInput{
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["comment"]; ok {
opts.Comment = gofastly.String(v.(string))
}
if v, ok := modified["method"]; ok {
opts.Method = gofastly.String(v.(string))
}
if v, ok := modified["host"]; ok {
opts.Host = gofastly.String(v.(string))
}
if v, ok := modified["path"]; ok {
opts.Path = gofastly.String(v.(string))
}
if v, ok := modified["http_version"]; ok {
opts.HTTPVersion = gofastly.String(v.(string))
}
if v, ok := modified["timeout"]; ok {
opts.Timeout = gofastly.Uint(uint(v.(int)))
}
if v, ok := modified["check_interval"]; ok {
opts.CheckInterval = gofastly.Uint(uint(v.(int)))
}
if v, ok := modified["expected_response"]; ok {
opts.ExpectedResponse = gofastly.Uint(uint(v.(int)))
}
if v, ok := modified["window"]; ok {
opts.Window = gofastly.Uint(uint(v.(int)))
}
if v, ok := modified["threshold"]; ok {
opts.Threshold = gofastly.Uint(uint(v.(int)))
}
if v, ok := modified["initial"]; ok {
opts.Initial = gofastly.Uint(uint(v.(int)))
}
log.Printf("[DEBUG] Update Healthcheck Opts: %#v", opts)
_, err := conn.UpdateHealthCheck(&opts)
if err != nil {
return err
}
return nil
}
func (h *HealthCheckServiceAttributeHandler) Delete(_ context.Context, d *schema.ResourceData, resource map[string]interface {
}, serviceVersion int, conn *gofastly.Client) error {
opts := gofastly.DeleteHealthCheckInput{
ServiceID: d.Id(),
ServiceVersion: serviceVersion,
Name: resource["name"].(string),
}
log.Printf("[DEBUG] Fastly Healthcheck removal opts: %#v", opts)
err := conn.DeleteHealthCheck(&opts)
if errRes, ok := err.(*gofastly.HTTPError); ok {
if errRes.StatusCode != 404 {
return err
}
} else if err != nil {
return err
}
return nil
}
func flattenHealthchecks(healthcheckList []*gofastly.HealthCheck) []map[string]interface{} {
var hl []map[string]interface{}
for _, h := range healthcheckList {
// Convert HealthChecks to a map for saving to state.
nh := map[string]interface{}{
"name": h.Name,
"host": h.Host,
"path": h.Path,
"check_interval": h.CheckInterval,
"expected_response": h.ExpectedResponse,
"http_version": h.HTTPVersion,
"initial": h.Initial,
"method": h.Method,
"threshold": h.Threshold,
"timeout": h.Timeout,
"window": h.Window,
}
// prune any empty values that come from the default string value in structs
for k, v := range nh {
if v == "" {
delete(nh, k)
}
}
hl = append(hl, nh)
}
return hl
}