/
handlers.go
194 lines (171 loc) · 11 KB
/
handlers.go
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package handlers
import (
"io/ioutil"
"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"
"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)),
bbs.ActualLRPGroupsRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPHandler.ActualLRPGroups), emitter)), // DEPRECATED
bbs.ActualLRPGroupsByProcessGuidRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPHandler.ActualLRPGroupsByProcessGuid), emitter)), // DEPRECATED
bbs.ActualLRPGroupByProcessGuidAndIndexRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPHandler.ActualLRPGroupByProcessGuidAndIndex), emitter)), // DEPRECATED
// Actual LRP Lifecycle
bbs.ClaimActualLRPRoute_r0: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, actualLRPLifecycleHandler.ClaimActualLRP), emitter)),
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)),
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)),
bbs.DesiredLRPsRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, desiredLRPHandler.DesiredLRPs_r2), emitter)), // DEPRECATED
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.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
bbs.TasksRoute_r2: route(middleware.RecordLatency(middleware.LogWrap(logger, accessLogger, taskHandler.Tasks_r2), emitter)), // DEPRECATED
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)),
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
bbs.EventStreamRoute_r0: route(middleware.LogWrap(logger, accessLogger, lrpGroupEventsHandler.Subscribe_r0)), // DEPRECATED
bbs.TaskEventStreamRoute_r0: route(middleware.LogWrap(logger, accessLogger, taskEventsHandler.Subscribe_r0)), // DEPRECATED
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 := ioutil.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)
}