76 lines
1.8 KiB
Go
76 lines
1.8 KiB
Go
package monitor
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import (
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"../cloudflare"
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"log"
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"fmt"
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)
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func NewCloudflareHandler(config CloudflareConfig) GenericHandler {
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return runHandler(make(chan Transition, 5), &cloudflareHandler{
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config,
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cloudflare.NewClient(config.Email, config.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 CloudflareConfig
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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 Transition) {
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switch transition.To {
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case 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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removeCloudflareRecord(this.client, this.config, transition.RecordValue)))
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case 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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addCloudflareRecord(this.client, this.config, transition.RecordValue)))
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case 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 removeCloudflareRecord(client *cloudflare.Client, config CloudflareConfig, recordValue string) bool {
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records, err := client.RetrieveRecordsByName(config.Domain, config.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 && client.DestroyRecord(config.Domain, record.Id) == nil
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}
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return exitStatus
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}
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func addCloudflareRecord(client *cloudflare.Client, config CloudflareConfig, recordValue string) bool {
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opts := cloudflare.CreateRecord{
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"A",
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config.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 := client.CreateRecord(config.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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