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handlers.go
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handlers.go
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package handlers
import (
"io"
"net/http"
"strconv"
"code.cloudfoundry.org/auctioneer"
"code.cloudfoundry.org/bbs"
"code.cloudfoundry.org/bbs/controllers"
"code.cloudfoundry.org/bbs/db"
"code.cloudfoundry.org/bbs/events"
"code.cloudfoundry.org/bbs/handlers/middleware"
"code.cloudfoundry.org/bbs/metrics"
"code.cloudfoundry.org/bbs/models"
"code.cloudfoundry.org/bbs/serviceclient"
"code.cloudfoundry.org/bbs/taskworkpool"
"code.cloudfoundry.org/lager/v3"
"code.cloudfoundry.org/rep"
"github.com/gogo/protobuf/proto"
"github.com/tedsuo/rata"
)
func New(
logger,
accessLogger lager.Logger,
updateWorkers int,
convergenceWorkersSize int,
maxTaskPlacementRetries int,
emitter middleware.Emitter,
db db.DB,
desiredHub, actualHub, actualLRPInstanceHub, taskHub events.Hub,
taskCompletionClient taskworkpool.TaskCompletionClient,
serviceClient serviceclient.ServiceClient,
auctioneerClient auctioneer.Client,
repClientFactory rep.ClientFactory,
taskStatMetronNotifier metrics.TaskStatMetronNotifier,
migrationsDone <-chan struct{},
exitChan chan struct{},
) http.Handler {
pingHandler := NewPingHandler()
domainHandler := NewDomainHandler(db, exitChan)
actualLRPHandler := NewActualLRPHandler(db, exitChan)
actualLRPController := controllers.NewActualLRPLifecycleController(
db, db, db, db,
auctioneerClient,
serviceClient,
repClientFactory,
actualHub,
actualLRPInstanceHub,
)
evacuationController := controllers.NewEvacuationController(
db, db, db, db,
auctioneerClient,
actualHub,
actualLRPInstanceHub,
)
actualLRPLifecycleHandler := NewActualLRPLifecycleHandler(actualLRPController, exitChan)
evacuationHandler := NewEvacuationHandler(evacuationController, exitChan)
desiredLRPHandler := NewDesiredLRPHandler(updateWorkers, db, db, desiredHub, actualHub, actualLRPInstanceHub, auctioneerClient, repClientFactory, serviceClient, exitChan)
taskController := controllers.NewTaskController(db, taskCompletionClient, auctioneerClient, serviceClient, repClientFactory, taskHub, taskStatMetronNotifier, maxTaskPlacementRetries)
taskHandler := NewTaskHandler(taskController, exitChan)
lrpGroupEventsHandler := NewLRPGroupEventsHandler(desiredHub, actualHub)
taskEventsHandler := NewTaskEventHandler(taskHub)
lrpInstanceEventsHandler := NewLRPInstanceEventHandler(desiredHub, actualLRPInstanceHub)
cellsHandler := NewCellHandler(serviceClient, exitChan)
actions := rata.Handlers{
// Ping
bbs.PingRoute_r0: middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, pingHandler.Ping), emitter),
// Domains
bbs.DomainsRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, domainHandler.Domains), emitter)),
bbs.UpsertDomainRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, domainHandler.Upsert), emitter)),
// Actual LRPs
bbs.ActualLRPsRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPHandler.ActualLRPs), emitter)),
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.ActualLRPGroupsRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPHandler.ActualLRPGroups), emitter)),
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.ActualLRPGroupsByProcessGuidRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPHandler.ActualLRPGroupsByProcessGuid), emitter)),
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.ActualLRPGroupByProcessGuidAndIndexRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPHandler.ActualLRPGroupByProcessGuidAndIndex), emitter)),
// Actual LRP Lifecycle
bbs.ClaimActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.ClaimActualLRP), emitter)),
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.StartActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.StartActualLRP_r0), emitter)), // DEPRECATED
bbs.StartActualLRPRoute_r1: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.StartActualLRP), emitter)),
bbs.CrashActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.CrashActualLRP), emitter)),
bbs.RetireActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.RetireActualLRP), emitter)),
bbs.FailActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.FailActualLRP), emitter)),
bbs.RemoveActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.RemoveActualLRP), emitter)),
// Evacuation
bbs.RemoveEvacuatingActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, evacuationHandler.RemoveEvacuatingActualLRP), emitter)),
bbs.EvacuateClaimedActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, evacuationHandler.EvacuateClaimedActualLRP), emitter)),
bbs.EvacuateCrashedActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, evacuationHandler.EvacuateCrashedActualLRP), emitter)),
bbs.EvacuateStoppedActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, evacuationHandler.EvacuateStoppedActualLRP), emitter)),
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.EvacuateRunningActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, evacuationHandler.EvacuateRunningActualLRP_r0), emitter)), // DEPRECATED
bbs.EvacuateRunningActualLRPRoute_r1: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, evacuationHandler.EvacuateRunningActualLRP), emitter)),
// Desired LRPs
bbs.DesiredLRPsRoute_r3: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPs), emitter)),
bbs.DesiredLRPByProcessGuidRoute_r3: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPByProcessGuid), emitter)),
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.DesiredLRPsRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPs_r2), emitter)), // DEPRECATED
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.DesiredLRPByProcessGuidRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPByProcessGuid_r2), emitter)), // DEPRECATED
bbs.DesiredLRPSchedulingInfosRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPSchedulingInfos), emitter)),
bbs.DesiredLRPSchedulingInfoByProcessGuid_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPSchedulingInfoByProcessGuid), emitter)),
bbs.DesiredLRPRoutingInfosRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPRoutingInfos), emitter)),
bbs.DesireDesiredLRPRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesireDesiredLRP), emitter)),
bbs.UpdateDesiredLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.UpdateDesiredLRP), emitter)),
bbs.RemoveDesiredLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.RemoveDesiredLRP), emitter)),
// Tasks
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.TasksRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.Tasks_r2), emitter)), // DEPRECATED
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.TaskByGuidRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.TaskByGuid_r2), emitter)), // DEPRECATED
bbs.TasksRoute_r3: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.Tasks), emitter)),
bbs.TaskByGuidRoute_r3: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.TaskByGuid), emitter)),
bbs.DesireTaskRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.DesireTask), emitter)),
bbs.StartTaskRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.StartTask), emitter)),
bbs.CancelTaskRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.CancelTask), emitter)),
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.FailTaskRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.FailTask), emitter)),
bbs.RejectTaskRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.RejectTask), emitter)),
bbs.CompleteTaskRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.CompleteTask), emitter)),
bbs.ResolvingTaskRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.ResolvingTask), emitter)),
bbs.DeleteTaskRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.DeleteTask), emitter)),
// Events
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.EventStreamRoute_r0: route(middleware.LogWrap(logger, accessLogger, lrpGroupEventsHandler.Subscribe_r0)), // DEPRECATED
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.TaskEventStreamRoute_r0: route(middleware.LogWrap(logger, accessLogger, taskEventsHandler.Subscribe_r0)), // DEPRECATED
//lint:ignore SA1019 - implementing deprecated logic until it is removed
bbs.LrpInstanceEventStreamRoute_r0: route(middleware.LogWrap(logger, accessLogger, lrpInstanceEventsHandler.Subscribe_r0)), // DEPRECATED
bbs.LRPGroupEventStreamRoute_r1: route(middleware.LogWrap(logger, accessLogger, lrpGroupEventsHandler.Subscribe_r1)),
bbs.TaskEventStreamRoute_r1: route(middleware.LogWrap(logger, accessLogger, taskEventsHandler.Subscribe_r1)),
bbs.LRPInstanceEventStreamRoute_r1: route(middleware.LogWrap(logger, accessLogger, lrpInstanceEventsHandler.Subscribe_r1)),
// Cells
bbs.CellsRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, cellsHandler.Cells), emitter)),
}
handler, err := rata.NewRouter(bbs.Routes, actions)
if err != nil {
panic("unable to create router: " + err.Error())
}
return middleware.RecordRequestCount(
UnavailableWrap(handler,
migrationsDone,
),
emitter,
)
}
func route(f http.HandlerFunc) http.Handler {
return f
}
func parseRequest(logger lager.Logger, req *http.Request, request MessageValidator) error {
data, err := io.ReadAll(req.Body)
if err != nil {
logger.Error("failed-to-read-body", err)
return models.ErrUnknownError
}
err = request.Unmarshal(data)
if err != nil {
logger.Error("failed-to-parse-request-body", err)
return models.ErrBadRequest
}
if err := request.Validate(); err != nil {
logger.Error("invalid-request", err)
return models.NewError(models.Error_InvalidRequest, err.Error())
}
return nil
}
func exitIfUnrecoverable(logger lager.Logger, exitCh chan<- struct{}, err *models.Error) {
if err != nil && err.Type == models.Error_Unrecoverable {
logger.Error("unrecoverable-error", err)
select {
case exitCh <- struct{}{}:
default:
}
}
}
func writeResponse(w http.ResponseWriter, message proto.Message) {
responseBytes, err := proto.Marshal(message)
if err != nil {
panic("Unable to encode Proto: " + err.Error())
}
w.Header().Set("Content-Length", strconv.Itoa(len(responseBytes)))
w.Header().Set("Content-Type", "application/x-protobuf")
w.WriteHeader(http.StatusOK)
w.Write(responseBytes)
}