/
util.go
130 lines (112 loc) · 4 KB
/
util.go
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package consumer
import (
"encoding/json"
"hash/crc32"
"strconv"
"github.com/couchbase/eventing/common"
memcached "github.com/couchbase/eventing/dcp/transport/client"
"github.com/couchbase/eventing/logging"
"github.com/couchbase/eventing/util"
)
func (c *Consumer) checkIfAlreadyEnqueued(vb uint16) bool {
logPrefix := "Consumer::checkIfAlreadyEnqueued"
c.vbEnqueuedForStreamReqRWMutex.RLock()
defer c.vbEnqueuedForStreamReqRWMutex.RUnlock()
if _, ok := c.vbEnqueuedForStreamReq[vb]; ok {
logging.Tracef("%s [%s:%s:%d] vb: %d already enqueued",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
return true
}
logging.Infof("%s [%s:%s:%d] vb: %d enqueuing",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
return false
}
// Returns true if already added to enque map
// If not added add it to enqueue map and return false
func (c *Consumer) checkAndAddToEnqueueMap(vb uint16) bool {
logPrefix := "Consumer::checkAndAddToEnqueMap"
c.vbEnqueuedForStreamReqRWMutex.Lock()
defer c.vbEnqueuedForStreamReqRWMutex.Unlock()
if _, ok := c.vbEnqueuedForStreamReq[vb]; ok {
logging.Tracef("%s [%s:%s:%d] vb: %d already enqueued",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
return true
}
c.vbEnqueuedForStreamReq[vb] = struct{}{}
logging.Infof("%s [%s:%s:%d] vb: %d enqueuing",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
return false
}
func (c *Consumer) deleteFromEnqueueMap(vb uint16) {
logPrefix := "Consumer::deleteFromEnqueueMap"
logging.Infof("%s [%s:%s:%d] vb: %d deleting from enqueue list",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
c.vbEnqueuedForStreamReqRWMutex.Lock()
defer c.vbEnqueuedForStreamReqRWMutex.Unlock()
delete(c.vbEnqueuedForStreamReq, vb)
}
func (c *Consumer) isRecursiveDCPEvent(evt *memcached.DcpEvent, functionInstanceID string) (bool, error) {
logPrefix := "Consumer::isRecursiveDCPEvent"
var xMeta xattrMetadata
body, xattr, err := util.ParseXattrData(xattrPrefix, evt.Value)
if err != nil {
c.dcpXattrParseError++
logging.Errorf("%s [%s:%s:%d] key: %ru failed to parse xattr metadata, err: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), string(evt.Key), err)
return false, err
}
if xattr != nil && len(xattr) > 0 {
err = json.Unmarshal(xattr, &xMeta)
if err != nil {
c.dcpXattrParseError++
logging.Errorf("%s [%s:%s:%d] key: %ru failed to unmarshal xattr, err: %v",
logPrefix, c.workerName, c.tcpPort, c.Pid(), string(evt.Key), err)
return false, err
}
seqno, err := strconv.ParseUint(xMeta.SeqNo, 0, 64)
if err != nil {
c.dcpXattrParseError++
logging.Errorf("%s [%s:%s:%d] key: %ru failed to read sequence number from XATTR",
logPrefix, c.workerName, c.tcpPort, c.Pid(), string(evt.Key))
return false, err
}
if xMeta.FunctionInstanceID == functionInstanceID && seqno == evt.Seqno {
checksum := crc32.Checksum(body, util.CrcTable)
xChecksum, err := strconv.ParseUint(xMeta.ValueCRC, 0, 32)
if err != nil {
c.dcpXattrParseError++
logging.Errorf("%s [%s:%s:%d] key: %ru failed to read CRC from XATTR",
logPrefix, c.workerName, c.tcpPort, c.Pid(), string(evt.Key))
return false, err
}
if uint64(checksum) == xChecksum {
return true, nil
}
}
}
return false, nil
}
func (c *Consumer) purgeVbStreamRequested(logPrefix string, vb uint16) {
c.vbsStreamRRWMutex.Lock()
if _, ok := c.vbStreamRequested[vb]; ok {
delete(c.vbStreamRequested, vb)
logging.Infof("%s [%s:%s:%d] vb: %d purging entry from vbStreamRequested",
logPrefix, c.workerName, c.tcpPort, c.Pid(), vb)
}
c.vbsStreamRRWMutex.Unlock()
}
func (c *Consumer) checkBinaryDocAllowed() bool {
langCompatibility, _ := common.FrameCouchbaseVersionShort(c.languageCompatibility)
binDocSupportVersion := common.CouchbaseVerMap["6.6.2"]
return langCompatibility.Compare(binDocSupportVersion)
}
func (c *Consumer) getEncryptionLevelName(enforceTLS, encryptOn bool) string {
encryptionLevel := "control_or_off"
if encryptOn {
encryptionLevel = "all"
if enforceTLS {
encryptionLevel = "strict"
}
}
return encryptionLevel
}