/
sync_inputs.go
228 lines (192 loc) · 5.64 KB
/
sync_inputs.go
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package webhookrelayforward
import (
"fmt"
"github.com/go-logr/logr"
"github.com/webhookrelay/webhookrelay-go"
forwardv1 "github.com/webhookrelay/webhookrelay-operator/pkg/apis/forward/v1"
)
// ensureBucketInputs checks and configures input specific information
func (r *ReconcileWebhookRelayForward) ensureBucketInputs(logger logr.Logger, bucketSpec *forwardv1.BucketSpec) error {
// If no inputs are defined, nothing to do
if len(bucketSpec.Inputs) == 0 {
return nil
}
bucket, ok := r.apiClient.bucketsCache.Get(bucketSpec.Name)
if !ok {
return fmt.Errorf("bucket '%s' not found in the cache, will wait for the next reconcile loop", bucketSpec.Name)
}
logger = logger.WithValues(
"bucket_name", bucket.Name,
"bucket_id", bucket.ID,
)
// Create a list of desired inputs and then diff existing
// ones against them to build a list of what inputs
// we should create, update and which ones to delete
desired := desiredInputs(bucketSpec, bucket)
diff := getInputsDiff(bucket.Inputs, desired)
var err error
// Create inputs that need to be created
for idx := range diff.create {
logger.Info("creating input",
"input_id", diff.create[idx].ID,
"input_name", diff.create[idx].Name,
)
_, err = r.apiClient.client.CreateInput(diff.create[idx])
if err != nil {
logger.Error(err, "failed to create input")
}
}
for idx := range diff.update {
logger.Info("updating input",
"input_id", diff.update[idx].ID,
"input_name", diff.update[idx].Name,
)
_, err = r.apiClient.client.UpdateInput(diff.update[idx])
if err != nil {
logger.Error(err, "failed to update input",
"input_id", diff.update[idx].ID,
)
}
}
for idx := range diff.delete {
logger.Info("deleting input",
"input_id", diff.delete[idx].ID,
"input_name", diff.delete[idx].Name,
)
err = r.apiClient.client.DeleteInput(&webhookrelay.InputDeleteOptions{
Bucket: diff.delete[idx].BucketID,
Input: diff.delete[idx].ID,
})
if err != nil {
logger.Error(err, "failed to delete input",
"input_id", diff.update[idx].ID,
)
}
}
return nil
}
func desiredInputs(bucketSpec *forwardv1.BucketSpec, bucket *webhookrelay.Bucket) []*webhookrelay.Input {
var desired []*webhookrelay.Input
for i := range bucketSpec.Inputs {
desired = append(desired, inputSpecToInput(&bucketSpec.Inputs[i], bucket))
}
return desired
}
func inputSpecToInput(spec *forwardv1.InputSpec, bucket *webhookrelay.Bucket) *webhookrelay.Input {
// Ensuring that ResponseFromOutput is either empty, 'anyOutput' or an actual ID
// of the output that is inside this bucket
if spec.ResponseFromOutput != "" && spec.ResponseFromOutput != "anyOutput" {
// checking maybe it's specified by name
for idx := range bucket.Outputs {
output := bucket.Outputs[idx]
if output.Name == spec.ResponseFromOutput || output.ID == spec.ResponseFromOutput {
// found it
spec.ResponseFromOutput = output.ID
break
}
}
}
computedInput := &webhookrelay.Input{
Name: spec.Name,
BucketID: bucket.ID,
FunctionID: spec.FunctionID,
Headers: spec.ResponseHeaders,
StatusCode: spec.ResponseStatusCode,
Body: spec.ResponseBody,
ResponseFromOutput: spec.ResponseFromOutput,
PathPrefix: spec.PathPrefix,
Description: spec.Description,
}
if spec.CustomDomain != nil {
// set, using it
computedInput.CustomDomain = *spec.CustomDomain
} else {
// not set, checking whether there was set one originally and preserving it
original, ok := getInputFromBucket(spec.Name, bucket)
if ok {
computedInput.CustomDomain = original.CustomDomain
}
}
return computedInput
}
func getInputFromBucket(name string, bucket *webhookrelay.Bucket) (*webhookrelay.Input, bool) {
for _, input := range bucket.Inputs {
if input.Name == name {
return input, true
}
}
return nil, false
}
func getInputsDiff(current, desired []*webhookrelay.Input) *inputsDiff {
diff := &inputsDiff{}
currentMap := make(map[string]*webhookrelay.Input)
for i := range current {
currentMap[current[i].Name] = current[i]
}
for i := range desired {
currentInput, ok := currentMap[desired[i].Name]
if !ok {
diff.create = append(diff.create, desired[i])
continue
}
if inputEqual(currentInput, desired[i]) {
// Nothing to do
continue
}
// Setting ID and adding to the update list
desired[i].ID = currentInput.ID
diff.update = append(diff.update, desired[i])
}
// TODO: check for inputs to delete, however this can be tricky and
// dangerous as it's better to have unused inputs than delete an input
// that's already being used by something and then have to manually update
// 3rd party service with the new ID
return diff
}
func inputEqual(current, desired *webhookrelay.Input) bool {
if current.FunctionID != desired.FunctionID {
return false
}
if current.StatusCode != desired.StatusCode {
return false
}
if current.Body != desired.Body {
return false
}
if len(current.Headers) != len(desired.Headers) {
for k := range current.Headers {
if !sliceEqual(current.Headers[k], desired.Headers[k]) {
return false
}
}
}
if current.ResponseFromOutput != desired.ResponseFromOutput {
return false
}
if current.CustomDomain != desired.CustomDomain {
return false
}
if current.PathPrefix != desired.PathPrefix {
return false
}
if current.Description != desired.Description {
return false
}
return true
}
type inputsDiff struct {
create []*webhookrelay.Input
update []*webhookrelay.Input
delete []*webhookrelay.Input
}
func sliceEqual(a, b []string) bool {
if len(a) != len(b) {
return false
}
for i, v := range a {
if v != b[i] {
return false
}
}
return true
}