portainer/api/http/handler/stacks/stack_migrate.go

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package stacks
import (
"net/http"
httperror "github.com/portainer/libhttp/error"
"github.com/portainer/libhttp/request"
"github.com/portainer/libhttp/response"
"github.com/portainer/portainer"
"github.com/portainer/portainer/http/proxy"
"github.com/portainer/portainer/http/security"
)
type stackMigratePayload struct {
EndpointID int
SwarmID string
}
func (payload *stackMigratePayload) Validate(r *http.Request) error {
if payload.EndpointID == 0 {
return portainer.Error("Invalid endpoint identifier. Must be a positive number")
}
return nil
}
// POST request on /api/stacks/:id/migrate?endpointId=<endpointId>
func (handler *Handler) stackMigrate(w http.ResponseWriter, r *http.Request) *httperror.HandlerError {
stackID, err := request.RetrieveNumericRouteVariableValue(r, "id")
if err != nil {
return &httperror.HandlerError{http.StatusBadRequest, "Invalid stack identifier route variable", err}
}
var payload stackMigratePayload
err = request.DecodeAndValidateJSONPayload(r, &payload)
if err != nil {
return &httperror.HandlerError{http.StatusBadRequest, "Invalid request payload", err}
}
stack, err := handler.StackService.Stack(portainer.StackID(stackID))
if err == portainer.ErrObjectNotFound {
return &httperror.HandlerError{http.StatusNotFound, "Unable to find a stack with the specified identifier inside the database", err}
} else if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find a stack with the specified identifier inside the database", err}
}
resourceControl, err := handler.ResourceControlService.ResourceControlByResourceID(stack.Name)
if err != nil && err != portainer.ErrObjectNotFound {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve a resource control associated to the stack", err}
}
securityContext, err := security.RetrieveRestrictedRequestContext(r)
if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to retrieve info from request context", err}
}
if !securityContext.IsAdmin {
if !proxy.CanAccessStack(stack, resourceControl, securityContext.UserID, securityContext.UserMemberships) {
return &httperror.HandlerError{http.StatusForbidden, "Access denied to resource", portainer.ErrResourceAccessDenied}
}
}
// TODO: this is a work-around for stacks created with Portainer version >= 1.17.1
// The EndpointID property is not available for these stacks, this API endpoint
// can use the optional EndpointID query parameter to associate a valid endpoint identifier to the stack.
endpointID, err := request.RetrieveNumericQueryParameter(r, "endpointId", true)
if err != nil {
return &httperror.HandlerError{http.StatusBadRequest, "Invalid query parameter: endpointId", err}
}
if endpointID != int(stack.EndpointID) {
stack.EndpointID = portainer.EndpointID(endpointID)
}
endpoint, err := handler.EndpointService.Endpoint(stack.EndpointID)
if err == portainer.ErrObjectNotFound {
return &httperror.HandlerError{http.StatusNotFound, "Unable to find the endpoint associated to the stack inside the database", err}
} else if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find the endpoint associated to the stack inside the database", err}
}
targetEndpoint, err := handler.EndpointService.Endpoint(portainer.EndpointID(payload.EndpointID))
if err == portainer.ErrObjectNotFound {
return &httperror.HandlerError{http.StatusNotFound, "Unable to find an endpoint with the specified identifier inside the database", err}
} else if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to find an endpoint with the specified identifier inside the database", err}
}
stack.EndpointID = portainer.EndpointID(payload.EndpointID)
if payload.SwarmID != "" {
stack.SwarmID = payload.SwarmID
}
migrationError := handler.migrateStack(r, stack, targetEndpoint)
if migrationError != nil {
return migrationError
}
err = handler.deleteStack(stack, endpoint)
if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, err.Error(), err}
}
err = handler.StackService.UpdateStack(stack.ID, stack)
if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, "Unable to persist the stack changes inside the database", err}
}
return response.JSON(w, stack)
}
func (handler *Handler) migrateStack(r *http.Request, stack *portainer.Stack, next *portainer.Endpoint) *httperror.HandlerError {
if stack.Type == portainer.DockerSwarmStack {
return handler.migrateSwarmStack(r, stack, next)
}
return handler.migrateComposeStack(r, stack, next)
}
func (handler *Handler) migrateComposeStack(r *http.Request, stack *portainer.Stack, next *portainer.Endpoint) *httperror.HandlerError {
config, configErr := handler.createComposeDeployConfig(r, stack, next)
if configErr != nil {
return configErr
}
err := handler.deployComposeStack(config)
if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, err.Error(), err}
}
return nil
}
func (handler *Handler) migrateSwarmStack(r *http.Request, stack *portainer.Stack, next *portainer.Endpoint) *httperror.HandlerError {
config, configErr := handler.createSwarmDeployConfig(r, stack, next, true)
if configErr != nil {
return configErr
}
err := handler.deploySwarmStack(config)
if err != nil {
return &httperror.HandlerError{http.StatusInternalServerError, err.Error(), err}
}
return nil
}