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feat: auto-reconnect backoff for chainsync input #236

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Merged
merged 1 commit into from
Aug 8, 2024
Merged

feat: auto-reconnect backoff for chainsync input #236

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55 changes: 34 additions & 21 deletions input/chainsync/chainsync.go
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Original file line number Diff line number Diff line change
Expand Up @@ -32,30 +32,33 @@ import (
const (
// Size of cache for recent chainsync cursors
cursorCacheSize = 20

maxAutoReconnectDelay = 60 * time.Second
)

type ChainSync struct {
oConn *ouroboros.Connection
logger plugin.Logger
network string
networkMagic uint32
address string
socketPath string
ntcTcp bool
bulkMode bool
intersectTip bool
intersectPoints []ocommon.Point
includeCbor bool
autoReconnect bool
statusUpdateFunc StatusUpdateFunc
status *ChainSyncStatus
errorChan chan error
eventChan chan event.Event
bulkRangeStart ocommon.Point
bulkRangeEnd ocommon.Point
cursorCache []ocommon.Point
dialAddress string
dialFamily string
oConn *ouroboros.Connection
logger plugin.Logger
network string
networkMagic uint32
address string
socketPath string
ntcTcp bool
bulkMode bool
intersectTip bool
intersectPoints []ocommon.Point
includeCbor bool
autoReconnect bool
autoReconnectDelay time.Duration
statusUpdateFunc StatusUpdateFunc
status *ChainSyncStatus
errorChan chan error
eventChan chan event.Event
bulkRangeStart ocommon.Point
bulkRangeEnd ocommon.Point
cursorCache []ocommon.Point
dialAddress string
dialFamily string
}

type ChainSyncStatus struct {
Expand Down Expand Up @@ -220,10 +223,20 @@ func (c *ChainSync) setupConnection() error {
err, ok := <-c.oConn.ErrorChan()
if ok {
if c.autoReconnect {
c.autoReconnectDelay = 0
if c.logger != nil {
c.logger.Infof("reconnecting to %s due to error: %s", c.dialAddress, err)
}
for {
if c.autoReconnectDelay > 0 {
c.logger.Infof("waiting %s to reconnect", c.autoReconnectDelay)
time.Sleep(c.autoReconnectDelay)
// Double current reconnect delay up to maximum
c.autoReconnectDelay = min(c.autoReconnectDelay*2, maxAutoReconnectDelay)
} else {
// Set initial reconnect delay
c.autoReconnectDelay = 1 * time.Second
}
// Shutdown current connection
if err := c.oConn.Close(); err != nil {
if c.logger != nil {
Expand Down