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evacuation_handler.go
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/
evacuation_handler.go
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package handlers
import (
"context"
"net/http"
"code.cloudfoundry.org/bbs/models"
"code.cloudfoundry.org/lager/v3"
"github.com/gogo/protobuf/proto"
)
//counterfeiter:generate -o fake_controllers/fake_evacuation_controller.go . EvacuationController
type EvacuationController interface {
RemoveEvacuatingActualLRP(context.Context, lager.Logger, *models.ActualLRPKey, *models.ActualLRPInstanceKey) error
EvacuateClaimedActualLRP(context.Context, lager.Logger, *models.ActualLRPKey, *models.ActualLRPInstanceKey) (bool, error)
EvacuateCrashedActualLRP(context.Context, lager.Logger, *models.ActualLRPKey, *models.ActualLRPInstanceKey, string) error
EvacuateRunningActualLRP(context.Context, lager.Logger, *models.ActualLRPKey, *models.ActualLRPInstanceKey, *models.ActualLRPNetInfo, []*models.ActualLRPInternalRoute, map[string]string, bool, string) (bool, error)
EvacuateStoppedActualLRP(context.Context, lager.Logger, *models.ActualLRPKey, *models.ActualLRPInstanceKey) error
}
type EvacuationHandler struct {
controller EvacuationController
exitChan chan<- struct{}
}
func NewEvacuationHandler(
controller EvacuationController,
exitChan chan<- struct{},
) *EvacuationHandler {
return &EvacuationHandler{
controller: controller,
exitChan: exitChan,
}
}
type MessageValidator interface {
proto.Message
Validate() error
Unmarshal(data []byte) error
}
func (h *EvacuationHandler) RemoveEvacuatingActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
var err error
logger = logger.Session("remove-evacuating-actual-lrp").WithTraceInfo(req)
logger.Info("started")
defer logger.Info("completed")
request := &models.RemoveEvacuatingActualLRPRequest{}
response := &models.RemoveEvacuatingActualLRPResponse{}
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
}
err = h.controller.RemoveEvacuatingActualLRP(req.Context(), logger, request.ActualLrpKey, request.ActualLrpInstanceKey)
response.Error = models.ConvertError(err)
}
func (h *EvacuationHandler) EvacuateClaimedActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
logger = logger.Session("evacuate-claimed-actual-lrp").WithTraceInfo(req)
logger.Info("started")
defer logger.Info("completed")
request := &models.EvacuateClaimedActualLRPRequest{}
response := &models.EvacuationResponse{}
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)
response.KeepContainer = true
return
}
keepContainer, err := h.controller.EvacuateClaimedActualLRP(req.Context(), logger, request.ActualLrpKey, request.ActualLrpInstanceKey)
response.Error = models.ConvertError(err)
response.KeepContainer = keepContainer
}
func (h *EvacuationHandler) EvacuateCrashedActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
logger = logger.Session("evacuate-crashed-actual-lrp").WithTraceInfo(req)
logger.Info("started")
defer logger.Info("completed")
request := &models.EvacuateCrashedActualLRPRequest{}
response := &models.EvacuationResponse{}
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
}
err = h.controller.EvacuateCrashedActualLRP(req.Context(), logger, request.ActualLrpKey, request.ActualLrpInstanceKey, request.ErrorMessage)
response.Error = models.ConvertError(err)
}
func (h *EvacuationHandler) commonEvacuateRunningActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request, useInternalRoutesAndTags bool) {
logger = logger.Session("evacuate-running-actual-lrp").WithTraceInfo(req)
logger.Info("starting")
defer logger.Info("completed")
response := &models.EvacuationResponse{}
response.KeepContainer = true
defer func() { exitIfUnrecoverable(logger, h.exitChan, response.Error) }()
defer writeResponse(w, response)
request := &models.EvacuateRunningActualLRPRequest{}
err := parseRequest(logger, req, request)
if err != nil {
response.Error = models.ConvertError(err)
return
}
var keepContainer bool
var actualLrpInternalRoutes []*models.ActualLRPInternalRoute
var metricTags map[string]string
if useInternalRoutesAndTags {
actualLrpInternalRoutes = request.ActualLrpInternalRoutes
metricTags = request.MetricTags
}
routable := true
if request.RoutableExists() {
r := request.GetRoutable()
routable = r
}
keepContainer, err = h.controller.EvacuateRunningActualLRP(req.Context(), logger, request.ActualLrpKey, request.ActualLrpInstanceKey, request.ActualLrpNetInfo, actualLrpInternalRoutes, metricTags, routable, request.AvailabilityZone)
response.Error = models.ConvertError(err)
response.KeepContainer = keepContainer
}
func (h *EvacuationHandler) EvacuateRunningActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
useInternalRoutesAndTags := true
h.commonEvacuateRunningActualLRP(logger, w, req, useInternalRoutesAndTags)
}
func (h *EvacuationHandler) EvacuateRunningActualLRP_r0(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
useInternalRoutesAndTags := false
h.commonEvacuateRunningActualLRP(logger, w, req, useInternalRoutesAndTags)
}
func (h *EvacuationHandler) EvacuateStoppedActualLRP(logger lager.Logger, w http.ResponseWriter, req *http.Request) {
logger = logger.Session("evacuate-stopped-actual-lrp").WithTraceInfo(req)
request := &models.EvacuateStoppedActualLRPRequest{}
response := &models.EvacuationResponse{}
defer func() { exitIfUnrecoverable(logger, h.exitChan, response.Error) }()
defer writeResponse(w, response)
err := parseRequest(logger, req, request)
if err != nil {
logger.Error("failed-to-parse-request", err)
response.Error = models.ConvertError(err)
return
}
err = h.controller.EvacuateStoppedActualLRP(req.Context(), logger, request.ActualLrpKey, request.ActualLrpInstanceKey)
response.Error = models.ConvertError(err)
}