87313887a4
This Commit contains the following: * Graceful shutdowns. * Handling all incoming SSE events for reorgs, finalizations, and head. The structure of the `BeaconClient` has drastically changed and generics are used.
44 lines
1.3 KiB
Go
44 lines
1.3 KiB
Go
package beaconclient
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import (
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"time"
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log "github.com/sirupsen/logrus"
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"github.com/vulcanize/ipld-ethcl-indexer/pkg/loghelper"
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)
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// This function will perform all the heavy lifting for tracking the head of the chain.
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func (bc *BeaconClient) CaptureHead() {
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log.Info("We are tracking the head of the chain.")
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//go readProcessedEvents(bc.HeadTracking.ProcessCh)
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bc.CaptureHeadTopic()
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}
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// Stop the head tracking service.
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func (bc *BeaconClient) StopHeadTracking() error {
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log.Info("We are going to stop tracking the head of chain because of the shutdown signal.")
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chHead := make(chan bool)
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chReorg := make(chan bool)
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chFinal := make(chan bool)
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go bc.HeadTracking.finishProcessingChannel(chHead)
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go bc.ReOrgTracking.finishProcessingChannel(chReorg)
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go bc.FinalizationTracking.finishProcessingChannel(chFinal)
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<-chHead
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<-chFinal
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<-chReorg
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log.Info("Successfully stopped the head tracking service.")
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return nil
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}
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func (se *SseEvents[ProcessedEvents]) finishProcessingChannel(finish chan<- bool) {
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loghelper.LogUrl(se.Url).Info("Received a close event.")
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se.SseClient.Unsubscribe(se.MessagesCh)
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for len(se.MessagesCh) != 0 {
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time.Sleep(time.Duration(shutdownWaitInterval) * time.Millisecond)
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}
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loghelper.LogUrl(se.Url).Info("Done processing all messages, ready for shutdown")
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finish <- true
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}
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