func connectToNatsServer(logger lager.Logger, c *config.Config, startMsg chan<- struct{}) *nats.Conn {
var natsClient *nats.Conn
var natsHost atomic.Value
var err error
options := natsOptions(logger, c, &natsHost, startMsg)
attempts := 3
for attempts > 0 {
natsClient, err = options.Connect()
if err == nil {
break
} else {
attempts--
time.Sleep(100 * time.Millisecond)
}
}
if err != nil {
logger.Fatal("nats-connection-error", err)
}
var natsHostStr string
natsUrl, err := url.Parse(natsClient.ConnectedUrl())
if err == nil {
natsHostStr = natsUrl.Host
}
logger.Info("Successfully-connected-to-nats", lager.Data{"host": natsHostStr})
natsHost.Store(natsHostStr)
return natsClient
}
func (db *SQLDB) FailTask(logger lager.Logger, taskGuid, failureReason string) (*models.Task, error) {
logger = logger.Session("fail-task", lager.Data{"task_guid": taskGuid})
logger.Info("starting")
defer logger.Info("complete")
var task *models.Task
err := db.transact(logger, func(logger lager.Logger, tx *sql.Tx) error {
var err error
task, err = db.fetchTaskForUpdate(logger, taskGuid, tx)
if err != nil {
logger.Error("failed-locking-task", err)
return err
}
if err = task.ValidateTransitionTo(models.Task_Completed); err != nil {
if task.State != models.Task_Pending {
logger.Error("failed-to-transition-task-to-completed", err)
return err
}
}
return db.completeTask(logger, task, true, failureReason, "", tx)
})
return task, err
}
func (h *TaskHandler) commonTasks(logger lager.Logger, w http.ResponseWriter, req *http.Request, version format.Version) {
var err error
logger = logger.Session("tasks", lager.Data{"revision": 0})
request := &models.TasksRequest{}
response := &models.TasksResponse{}
defer func() { exitIfUnrecoverable(logger, h.exitChan, response.Error) }()
defer writeResponse(w, response)
err = parseRequest(logger, req, request)
if err != nil {
logger.Error("failed-parsing-request", err)
response.Error = models.ConvertError(err)
return
}
filter := models.TaskFilter{Domain: request.Domain, CellID: request.CellId}
response.Tasks, err = h.controller.Tasks(logger, filter.Domain, filter.CellID)
if err != nil {
response.Error = models.ConvertError(err)
return
}
for i := range response.Tasks {
task := response.Tasks[i]
if task.TaskDefinition == nil {
continue
}
response.Tasks[i] = task.VersionDownTo(version)
}
}
func initializeDropsonde(logger lager.Logger) {
dropsondeDestination := fmt.Sprint("localhost:", *dropsondePort)
err := dropsonde.Initialize(dropsondeDestination, dropsondeOrigin)
if err != nil {
logger.Error("failed-to-initialize-dropsonde", err)
}
}
func NewPoller(logger lager.Logger, httpClient *http.Client, pollInterval time.Duration) Poller {
return &poller{
client: httpClient,
pollInterval: pollInterval,
logger: logger.Session("poller"),
}
}
func (db *ETCDDB) DesireTask(logger lager.Logger, taskDef *models.TaskDefinition, taskGuid, domain string) error {
logger = logger.WithData(lager.Data{"task_guid": taskGuid})
logger.Info("starting")
defer logger.Info("finished")
now := db.clock.Now().UnixNano()
task := &models.Task{
TaskDefinition: taskDef,
TaskGuid: taskGuid,
Domain: domain,
State: models.Task_Pending,
CreatedAt: now,
UpdatedAt: now,
}
value, err := db.serializeModel(logger, task)
if err != nil {
return err
}
logger.Debug("persisting-task")
_, err = db.client.Create(TaskSchemaPathByGuid(task.TaskGuid), value, NO_TTL)
if err != nil {
return ErrorFromEtcdError(logger, err)
}
logger.Debug("succeeded-persisting-task")
return nil
}
func (db *ETCDDB) resolveRestartableCrashedActualLRPS(logger lager.Logger, actualLRP *models.ActualLRP, starts *startRequests) func() {
return func() {
actualKey := actualLRP.ActualLRPKey
logger = logger.Session("restart-crash", lager.Data{
"process_guid": actualKey.ProcessGuid,
"index": actualKey.Index,
})
if actualLRP.State != models.ActualLRPStateCrashed {
logger.Error("failed-actual-lrp-state-is-not-crashed", nil)
return
}
logger.Debug("unclaiming-actual-lrp", lager.Data{"process_guid": actualLRP.ActualLRPKey.ProcessGuid, "index": actualLRP.ActualLRPKey.Index})
_, err := db.unclaimActualLRP(logger, &actualLRP.ActualLRPKey, &actualLRP.ActualLRPInstanceKey)
if err != nil {
logger.Error("failed-unclaiming-crash", err)
return
}
logger.Debug("succeeded-unclaiming-actual-lrp")
starts.Add(logger, &actualKey)
}
}
func (h *ActualLRPLifecycleHandler) StartActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
var err error
logger = logger.Session("start-actual-lrp")
request := &models.StartActualLRPRequest{}
response := &models.ActualLRPLifecycleResponse{}
defer func() { exitIfUnrecoverable(logger, h.exitChan, response.Error) }()
defer writeResponse(w, response)
err = parseRequest(logger, req, request)
if err != nil {
response.Error = models.ConvertError(err)
return
}
before, after, err := h.db.StartActualLRP(logger, request.ActualLrpKey, request.ActualLrpInstanceKey, request.ActualLrpNetInfo)
if err != nil {
response.Error = models.ConvertError(err)
return
}
if before == nil {
go h.actualHub.Emit(models.NewActualLRPCreatedEvent(after))
} else if !before.Equal(after) {
go h.actualHub.Emit(models.NewActualLRPChangedEvent(before, after))
}
}
func initializeDropsonde(logger lager.Logger, uploaderConfig config.UploaderConfig) {
dropsondeDestination := fmt.Sprint("localhost:", uploaderConfig.DropsondePort)
err := dropsonde.Initialize(dropsondeDestination, dropsondeOrigin)
if err != nil {
logger.Error("failed to initialize dropsonde: %v", err)
}
}
func (h *ActualLRPLifecycleHandler) RemoveActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
var err error
logger = logger.Session("remove-actual-lrp")
request := &models.RemoveActualLRPRequest{}
response := &models.ActualLRPLifecycleResponse{}
defer func() { exitIfUnrecoverable(logger, h.exitChan, response.Error) }()
defer writeResponse(w, response)
err = parseRequest(logger, req, request)
if err != nil {
response.Error = models.ConvertError(err)
return
}
beforeActualLRPGroup, err := h.db.ActualLRPGroupByProcessGuidAndIndex(logger, request.ProcessGuid, request.Index)
if err != nil {
response.Error = models.ConvertError(err)
return
}
err = h.db.RemoveActualLRP(logger, request.ProcessGuid, request.Index, request.ActualLrpInstanceKey)
if err != nil {
response.Error = models.ConvertError(err)
return
}
go h.actualHub.Emit(models.NewActualLRPRemovedEvent(beforeActualLRPGroup))
}
func (h *ActualLRPLifecycleHandler) ClaimActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
var err error
logger = logger.Session("claim-actual-lrp")
request := &models.ClaimActualLRPRequest{}
response := &models.ActualLRPLifecycleResponse{}
defer func() { exitIfUnrecoverable(logger, h.exitChan, response.Error) }()
defer writeResponse(w, response)
err = parseRequest(logger, req, request)
if err != nil {
response.Error = models.ConvertError(err)
return
}
before, after, err := h.db.ClaimActualLRP(logger, request.ProcessGuid, request.Index, request.ActualLrpInstanceKey)
if err != nil {
response.Error = models.ConvertError(err)
return
}
if !after.Equal(before) {
go h.actualHub.Emit(models.NewActualLRPChangedEvent(before, after))
}
}
func (a *AUFSDiffSizer) DiffSize(logger lager.Logger, containerRootFSPath string) (uint64, error) {
_, err := os.Stat(containerRootFSPath)
if os.IsNotExist(err) {
return 0, fmt.Errorf("get usage: %s", err)
}
log := logger.Session("diff-size", lager.Data{"path": containerRootFSPath})
log.Debug("start")
command := fmt.Sprintf("df -B 1 %s | tail -n1 | awk -v N=3 '{print $N}'", a.AUFSDiffPathFinder.GetDiffLayerPath((containerRootFSPath)))
outbytes, err := exec.Command("sh", "-c", command).CombinedOutput()
if err != nil {
log.Error("df-failed", err)
return 0, fmt.Errorf("get usage: df: %s, %s", err, string(outbytes))
}
var bytesUsed uint64
if _, err := fmt.Sscanf(string(outbytes), "%d", &bytesUsed); err != nil {
log.Error("scanf-failed", err, lager.Data{"out": string(outbytes)})
return 0, nil
}
log.Debug("finished", lager.Data{"bytes": bytesUsed})
return bytesUsed, nil
}
func (s *CgroupStarter) mountCgroup(logger lager.Logger, cgroupPath, subsystems string) error {
logger = logger.Session("mount-cgroup", lager.Data{
"path": cgroupPath,
"subsystems": subsystems,
})
logger.Info("started")
if !s.isMountPoint(cgroupPath) {
if err := os.MkdirAll(cgroupPath, 0755); err != nil {
return fmt.Errorf("mkdir '%s': %s", cgroupPath, err)
}
cmd := exec.Command("mount", "-n", "-t", "cgroup", "-o", subsystems, "cgroup", cgroupPath)
cmd.Stderr = logging.Writer(logger.Session("mount-cgroup-cmd"))
if err := s.CommandRunner.Run(cmd); err != nil {
return fmt.Errorf("mounting subsystems '%s' in '%s': %s", subsystems, cgroupPath, err)
}
} else {
logger.Info("subsystems-already-mounted")
}
logger.Info("finished")
return nil
}
func NewMetrics(logger lager.Logger, backingStoresPath, depotPath string) Metrics {
return &metrics{
backingStoresPath: backingStoresPath,
depotPath: depotPath,
logger: logger.Session("metrics"),
}
}
func NewPresence(
logger lager.Logger,
consulClient consuladapter.Client,
lockKey string,
lockValue []byte,
clock clock.Clock,
retryInterval time.Duration,
lockTTL time.Duration,
) Presence {
uuid, err := uuid.NewV4()
if err != nil {
logger.Fatal("create-uuid-failed", err)
}
session, err := NewSessionNoChecks(uuid.String(), lockTTL, consulClient)
if err != nil {
logger.Fatal("consul-session-failed", err)
}
return Presence{
consul: session,
key: lockKey,
value: lockValue,
clock: clock,
retryInterval: retryInterval,
logger: logger,
}
}
func initializeServer(logger lager.Logger, uploaderConfig config.UploaderConfig) ifrit.Runner {
transport := &http.Transport{
Proxy: http.ProxyFromEnvironment,
Dial: (&net.Dialer{
Timeout: ccUploadDialTimeout,
KeepAlive: ccUploadKeepAlive,
}).Dial,
TLSClientConfig: &tls.Config{
InsecureSkipVerify: uploaderConfig.SkipCertVerify,
},
TLSHandshakeTimeout: ccUploadTLSHandshakeTimeout,
}
pollerHttpClient := cfhttp.NewClient()
pollerHttpClient.Transport = transport
uploader := ccclient.NewUploader(logger, &http.Client{Transport: transport})
poller := ccclient.NewPoller(logger, pollerHttpClient, time.Duration(uploaderConfig.CCJobPollingInterval))
ccUploaderHandler, err := handlers.New(uploader, poller, logger)
if err != nil {
logger.Error("router-building-failed", err)
os.Exit(1)
}
return http_server.New(uploaderConfig.ListenAddress, ccUploaderHandler)
}
// The stager calls this when it wants to claim a completed task. This ensures that only one
// stager ever attempts to handle a completed task
func (db *ETCDDB) ResolvingTask(logger lager.Logger, taskGuid string) error {
logger = logger.WithData(lager.Data{"task_guid": taskGuid})
logger.Info("starting")
defer logger.Info("finished")
task, index, err := db.taskByGuidWithIndex(logger, taskGuid)
if err != nil {
logger.Error("failed-getting-task", err)
return err
}
err = task.ValidateTransitionTo(models.Task_Resolving)
if err != nil {
logger.Error("invalid-state-transition", err)
return err
}
task.UpdatedAt = db.clock.Now().UnixNano()
task.State = models.Task_Resolving
value, err := db.serializeModel(logger, task)
if err != nil {
return err
}
_, err = db.client.CompareAndSwap(TaskSchemaPathByGuid(taskGuid), value, NO_TTL, index)
if err != nil {
return ErrorFromEtcdError(logger, err)
}
return nil
}
func (db *SQLDB) transact(logger lager.Logger, f func(logger lager.Logger, tx *sql.Tx) error) error {
var err error
for attempts := 0; attempts < 3; attempts++ {
err = func() error {
tx, err := db.db.Begin()
if err != nil {
return err
}
defer tx.Rollback()
err = f(logger, tx)
if err != nil {
return err
}
return tx.Commit()
}()
if attempts >= 2 || db.convertSQLError(err) != models.ErrDeadlock {
break
} else {
logger.Error("deadlock-transaction", err, lager.Data{"attempts": attempts})
time.Sleep(500 * time.Millisecond)
}
}
return err
}
func (db *ETCDDB) batchDeleteTasks(taskGuids []string, logger lager.Logger) {
if len(taskGuids) == 0 {
return
}
works := []func(){}
for _, taskGuid := range taskGuids {
taskGuid := taskGuid
works = append(works, func() {
_, err := db.client.Delete(taskGuid, true)
if err != nil {
logger.Error("failed-to-delete", err, lager.Data{
"task_guid": taskGuid,
})
}
})
}
throttler, err := workpool.NewThrottler(db.convergenceWorkersSize, works)
if err != nil {
logger.Error("failed-to-create-throttler", err)
}
throttler.Work()
return
}
func (db *ETCDDB) UnclaimActualLRP(logger lager.Logger, key *models.ActualLRPKey) (*models.ActualLRPGroup, *models.ActualLRPGroup, error) {
actualLRP, modifiedIndex, err := db.rawActualLRPByProcessGuidAndIndex(logger, key.ProcessGuid, key.Index)
bbsErr := models.ConvertError(err)
if bbsErr != nil {
return nil, nil, bbsErr
}
beforeActualLRP := *actualLRP
if actualLRP.State == models.ActualLRPStateUnclaimed {
logger.Debug("already-unclaimed")
return nil, nil, models.ErrActualLRPCannotBeUnclaimed
}
actualLRP.State = models.ActualLRPStateUnclaimed
actualLRP.ActualLRPKey = *key
actualLRP.ActualLRPInstanceKey = models.ActualLRPInstanceKey{}
actualLRP.ActualLRPNetInfo = models.EmptyActualLRPNetInfo()
actualLRP.Since = db.clock.Now().UnixNano()
actualLRP.ModificationTag.Increment()
data, err := db.serializeModel(logger, actualLRP)
if err != nil {
return nil, nil, err
}
_, err = db.client.CompareAndSwap(ActualLRPSchemaPath(key.ProcessGuid, key.Index), data, 0, modifiedIndex)
if err != nil {
logger.Error("failed-compare-and-swap", err)
return nil, nil, ErrorFromEtcdError(logger, err)
}
return &models.ActualLRPGroup{Instance: &beforeActualLRP}, &models.ActualLRPGroup{Instance: actualLRP}, nil
}
func appendSSLConnectionStringParam(logger lager.Logger, driverName, databaseConnectionString, sqlCACertFile string) string {
switch driverName {
case "mysql":
if sqlCACertFile != "" {
certBytes, err := ioutil.ReadFile(sqlCACertFile)
if err != nil {
logger.Fatal("failed-to-read-sql-ca-file", err)
}
caCertPool := x509.NewCertPool()
if ok := caCertPool.AppendCertsFromPEM(certBytes); !ok {
logger.Fatal("failed-to-parse-sql-ca", err)
}
tlsConfig := &tls.Config{
InsecureSkipVerify: false,
RootCAs: caCertPool,
}
mysql.RegisterTLSConfig("bbs-tls", tlsConfig)
databaseConnectionString = fmt.Sprintf("%s?tls=bbs-tls", databaseConnectionString)
}
case "postgres":
if sqlCACertFile == "" {
databaseConnectionString = fmt.Sprintf("%s?sslmode=disable", databaseConnectionString)
} else {
databaseConnectionString = fmt.Sprintf("%s?sslmode=verify-ca&sslrootcert=%s", databaseConnectionString, sqlCACertFile)
}
}
return databaseConnectionString
}
func (db *ETCDDB) FailActualLRP(logger lager.Logger, key *models.ActualLRPKey, errorMessage string) (*models.ActualLRPGroup, *models.ActualLRPGroup, error) {
logger = logger.WithData(lager.Data{"actual_lrp_key": key, "error_message": errorMessage})
logger.Info("starting")
lrp, prevIndex, err := db.rawActualLRPByProcessGuidAndIndex(logger, key.ProcessGuid, key.Index)
if err != nil {
logger.Error("failed-to-get-actual-lrp", err)
return nil, nil, err
}
beforeActualLRP := *lrp
if lrp.State != models.ActualLRPStateUnclaimed {
return nil, nil, models.ErrActualLRPCannotBeFailed
}
lrp.ModificationTag.Increment()
lrp.PlacementError = errorMessage
lrp.Since = db.clock.Now().UnixNano()
lrpData, serialErr := db.serializeModel(logger, lrp)
if serialErr != nil {
return nil, nil, serialErr
}
_, err = db.client.CompareAndSwap(ActualLRPSchemaPath(key.ProcessGuid, key.Index), lrpData, 0, prevIndex)
if err != nil {
logger.Error("failed", err)
return nil, nil, models.ErrActualLRPCannotBeFailed
}
logger.Info("succeeded")
return &models.ActualLRPGroup{Instance: &beforeActualLRP}, &models.ActualLRPGroup{Instance: lrp}, nil
}
func (n *networker) Destroy(log lager.Logger, handle string) error {
cfg, err := load(n.configStore, handle)
if err != nil {
log.Error("no-properties-for-container-skipping-destroy-network", err)
return nil
}
if err := n.configurer.DestroyIPTablesRules(log, cfg); err != nil {
return err
}
if err := n.subnetPool.Release(cfg.Subnet, cfg.ContainerIP); err != nil && err != subnets.ErrReleasedUnallocatedSubnet {
log.Error("release-failed", err)
return err
}
if ports, ok := n.configStore.Get(handle, gardener.MappedPortsKey); ok {
mappings, err := portsFromJson(ports)
if err != nil {
return err
}
for _, m := range mappings {
n.portPool.Release(m.HostPort)
}
}
err = n.subnetPool.RunIfFree(cfg.Subnet, func() error {
return n.configurer.DestroyBridge(log, cfg)
})
return err
}
func (db *ETCDDB) rawActualLRPGroupByProcessGuidAndIndex(logger lager.Logger, processGuid string, index int32) (*models.ActualLRPGroup, error) {
node, err := db.fetchRecursiveRaw(logger, ActualLRPIndexDir(processGuid, index))
if err != nil {
return nil, err
}
group := models.ActualLRPGroup{}
for _, instanceNode := range node.Nodes {
var lrp models.ActualLRP
deserializeErr := db.deserializeModel(logger, instanceNode, &lrp)
if deserializeErr != nil {
logger.Error("failed-parsing-actual-lrp", deserializeErr, lager.Data{"key": instanceNode.Key})
return nil, deserializeErr
}
if isInstanceActualLRPNode(instanceNode) {
group.Instance = &lrp
}
if isEvacuatingActualLRPNode(instanceNode) {
group.Evacuating = &lrp
}
}
if group.Evacuating == nil && group.Instance == nil {
return nil, models.ErrResourceNotFound
}
return &group, nil
}
func (db *SQLDB) DesireTask(logger lager.Logger, taskDef *models.TaskDefinition, taskGuid, domain string) error {
logger = logger.Session("desire-task", lager.Data{"task_guid": taskGuid})
logger.Info("starting")
defer logger.Info("complete")
taskDefData, err := db.serializeModel(logger, taskDef)
if err != nil {
logger.Error("failed-serializing-task-definition", err)
return err
}
return db.transact(logger, func(logger lager.Logger, tx *sql.Tx) error {
now := db.clock.Now().UnixNano()
_, err = db.insert(logger, tx, tasksTable,
SQLAttributes{
"guid": taskGuid,
"domain": domain,
"created_at": now,
"updated_at": now,
"first_completed_at": 0,
"state": models.Task_Pending,
"task_definition": taskDefData,
},
)
if err != nil {
logger.Error("failed-inserting-task", err)
return db.convertSQLError(err)
}
return nil
})
}
func (db *ETCDDB) createActualLRP(logger lager.Logger, desiredLRP *models.DesiredLRP, index int32) error {
logger = logger.Session("create-actual-lrp")
var err error
if index >= desiredLRP.Instances {
err = models.NewError(models.Error_InvalidRecord, "Index too large")
logger.Error("actual-lrp-index-too-large", err, lager.Data{"actual_index": index, "desired_instances": desiredLRP.Instances})
return err
}
guid, err := uuid.NewV4()
if err != nil {
return err
}
actualLRP := &models.ActualLRP{
ActualLRPKey: models.NewActualLRPKey(
desiredLRP.ProcessGuid,
index,
desiredLRP.Domain,
),
State: models.ActualLRPStateUnclaimed,
Since: db.clock.Now().UnixNano(),
ModificationTag: models.ModificationTag{
Epoch: guid.String(),
Index: 0,
},
}
err = db.createRawActualLRP(logger, actualLRP)
if err != nil {
return err
}
return nil
}
func (db *SQLDB) completeTask(logger lager.Logger, task *models.Task, failed bool, failureReason, result string, tx *sql.Tx) error {
now := db.clock.Now().UnixNano()
_, err := db.update(logger, tx, tasksTable,
SQLAttributes{
"failed": failed,
"failure_reason": failureReason,
"result": result,
"state": models.Task_Completed,
"first_completed_at": now,
"updated_at": now,
"cell_id": "",
},
"guid = ?", task.TaskGuid,
)
if err != nil {
logger.Error("failed-updating-tasks", err)
return db.convertSQLError(err)
}
task.State = models.Task_Completed
task.UpdatedAt = now
task.FirstCompletedAt = now
task.Failed = failed
task.FailureReason = failureReason
task.Result = result
task.CellId = ""
return nil
}
func (db *SQLDB) fetchActualLRPForUpdate(logger lager.Logger, processGuid string, index int32, evacuating bool, tx *sql.Tx) (*models.ActualLRP, error) {
expireTime := db.clock.Now().Round(time.Second).UnixNano()
wheres := "process_guid = ? AND instance_index = ? AND evacuating = ?"
bindings := []interface{}{processGuid, index, evacuating}
if evacuating {
wheres += " AND expire_time > ?"
bindings = append(bindings, expireTime)
}
rows, err := db.all(logger, tx, actualLRPsTable,
actualLRPColumns, LockRow, wheres, bindings...)
if err != nil {
logger.Error("failed-query", err)
return nil, db.convertSQLError(err)
}
groups, err := db.scanAndCleanupActualLRPs(logger, tx, rows)
if err != nil {
return nil, db.convertSQLError(err)
}
if len(groups) == 0 {
return nil, models.ErrResourceNotFound
}
actualLRP, _ := groups[0].Resolve()
return actualLRP, nil
}
func (h *TaskHandler) commonTaskByGuid(logger lager.Logger, w http.ResponseWriter, req *http.Request, version format.Version) {
var err error
logger = logger.Session("task-by-guid", lager.Data{"revision": 0})
request := &models.TaskByGuidRequest{}
response := &models.TaskResponse{}
defer func() { exitIfUnrecoverable(logger, h.exitChan, response.Error) }()
defer writeResponse(w, response)
err = parseRequest(logger, req, request)
if err != nil {
logger.Error("failed-parsing-request", err)
response.Error = models.ConvertError(err)
return
}
response.Task, err = h.controller.TaskByGuid(logger, request.TaskGuid)
if err != nil {
response.Error = models.ConvertError(err)
return
}
if response.Task.TaskDefinition != nil {
response.Task = response.Task.VersionDownTo(version)
}
}
func (db *serviceClient) Cells(logger lager.Logger) (models.CellSet, error) {
kvPairs, _, err := db.consulClient.KV().List(CellSchemaRoot(), nil)
if err != nil {
bbsErr := models.ConvertError(convertConsulError(err))
if bbsErr.Type != models.Error_ResourceNotFound {
return nil, bbsErr
}
}
if kvPairs == nil {
err = consuladapter.NewPrefixNotFoundError(CellSchemaRoot())
bbsErr := models.ConvertError(convertConsulError(err))
if bbsErr.Type != models.Error_ResourceNotFound {
return nil, bbsErr
}
}
cellPresences := models.NewCellSet()
for _, kvPair := range kvPairs {
if kvPair.Session == "" {
continue
}
cell := kvPair.Value
presence := new(models.CellPresence)
err := models.FromJSON(cell, presence)
if err != nil {
logger.Error("failed-to-unmarshal-cells-json", err)
continue
}
cellPresences.Add(presence)
}
return cellPresences, nil
}