Beispiel #1
0
func (db *ETCDDB) UpdateDesiredLRP(logger lager.Logger, processGuid string, update *models.DesiredLRPUpdate) (*models.DesiredLRP, error) {
	logger.Info("starting")
	defer logger.Info("complete")

	var schedulingInfo *models.DesiredLRPSchedulingInfo
	var err error
	var beforeDesiredLRP *models.DesiredLRP

	for i := 0; i < 2; i++ {
		var index uint64

		beforeDesiredLRP, index, err = db.rawDesiredLRPByProcessGuid(logger, processGuid)
		if err != nil {
			logger.Error("failed-to-fetch-desired-lrp", err)
			break
		}

		schedulingInfoValue := beforeDesiredLRP.DesiredLRPSchedulingInfo()
		schedulingInfo = &schedulingInfoValue
		schedulingInfo.ApplyUpdate(update)

		err = db.updateDesiredLRPSchedulingInfo(logger, schedulingInfo, index)
		if err != nil {
			logger.Error("update-scheduling-info-failed", err)
			modelErr := models.ConvertError(err)
			if modelErr != models.ErrResourceConflict {
				break
			}
			// Retry on CAS fail
			continue
		}

		break
	}

	if err != nil {
		return nil, err
	}

	return beforeDesiredLRP, nil
}
					It("request an auction", func() {
						Expect(responseRecorder.Code).To(Equal(http.StatusOK))
						response := &models.ActualLRPLifecycleResponse{}
						err := response.Unmarshal(responseRecorder.Body.Bytes())
						Expect(err).NotTo(HaveOccurred())

						Expect(response.Error).To(BeNil())

						Expect(fakeDesiredLRPDB.DesiredLRPByProcessGuidCallCount()).To(Equal(1))
						_, processGuid := fakeDesiredLRPDB.DesiredLRPByProcessGuidArgsForCall(0)
						Expect(processGuid).To(Equal("process-guid"))

						Expect(fakeAuctioneerClient.RequestLRPAuctionsCallCount()).To(Equal(1))
						_, startRequests := fakeAuctioneerClient.RequestLRPAuctionsArgsForCall(0)
						Expect(startRequests).To(HaveLen(1))
						schedulingInfo := desiredLRP.DesiredLRPSchedulingInfo()
						expectedStartRequest := auctioneer.NewLRPStartRequestFromSchedulingInfo(&schedulingInfo, 1)
						Expect(startRequests[0]).To(BeEquivalentTo(&expectedStartRequest))
					})
				})

				Context("when the actual lrp should not be restarted (e.g., crashed)", func() {
					BeforeEach(func() {
						fakeActualLRPDB.CrashActualLRPReturns(&models.ActualLRPGroup{Instance: &actualLRP}, &models.ActualLRPGroup{Instance: &actualLRP}, false, nil)
					})

					It("does not request an auction", func() {
						Expect(responseRecorder.Code).To(Equal(http.StatusOK))
						response := &models.ActualLRPLifecycleResponse{}
						err := response.Unmarshal(responseRecorder.Body.Bytes())
						Expect(err).NotTo(HaveOccurred())