81 lines
2.1 KiB
Go
81 lines
2.1 KiB
Go
package handlers
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import (
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"../cloudflare"
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"../core"
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"log"
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"fmt"
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)
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func NewCloudflareHandler(config core.ReactionConfig) *core.GenericHandler {
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if config.Options["email"] == "" || config.Options["apiKey"] == "" || config.Options["domain"] == "" || config.Options["name"] == "" || config.Options["ttl"] == "" {
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log.Fatal(fmt.Sprintf("Misconfigured cloudflare handler: %#v", config))
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}
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return core.NewGenericHandler(make(chan core.Transition, 5), &cloudflareHandler{
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config,
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cloudflare.NewClient(config.Options["email"], config.Options["apiKey"]),
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make(map[string]bool),
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})
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}
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type cloudflareHandler struct{
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config core.ReactionConfig
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client *cloudflare.Client
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actuallyDownHosts map[string]bool
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}
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func (this *cloudflareHandler) Handle(transition core.Transition) {
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switch transition.To {
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case core.Down:
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log.Print(fmt.Sprintf(
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"Removed cloudflare record for `%s`: `%v`\n",
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transition.RecordValue,
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this.removeCloudflareRecord(transition.RecordValue)))
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case core.Up:
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log.Print(fmt.Sprintf(
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"Added cloudflare record for `%s`: `%v`\n",
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transition.RecordValue,
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this.addCloudflareRecord(transition.RecordValue)))
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case core.Unknown: //just leave it how it was, going up/down is idempotent anyways
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}
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}
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func (this *cloudflareHandler) removeCloudflareRecord(recordValue string) bool {
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records, err := this.client.RetrieveRecordsByName(this.config.Options["Domain"], this.config.Options["Name"])
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if err != nil {
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return false
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}
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exitStatus := true
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for _, record := range records {
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if record.Value != recordValue {
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continue
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}
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exitStatus = exitStatus && this.client.DestroyRecord(this.config.Options["domain"], record.Id) == nil
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}
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return exitStatus
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}
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func (this *cloudflareHandler) addCloudflareRecord(recordValue string) bool {
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opts := cloudflare.CreateRecord{
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"A",
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this.config.Options["name"],
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recordValue,
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"1",
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"0",
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}
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_, err := this.client.CreateRecord(this.config.Options["domain"], &opts)
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if err != nil {
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return fmt.Sprintf("%s", err) == "API Error: The record already exists."
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}
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return true
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}
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