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package main
import (
"context"
"encoding/json"
"errors"
"fmt"
"net/http"
"net/url"
"github.com/gorilla/mux"
internalInstance "github.com/lxc/incus/v6/internal/instance"
"github.com/lxc/incus/v6/internal/server/db"
dbCluster "github.com/lxc/incus/v6/internal/server/db/cluster"
"github.com/lxc/incus/v6/internal/server/db/operationtype"
"github.com/lxc/incus/v6/internal/server/instance"
"github.com/lxc/incus/v6/internal/server/operations"
"github.com/lxc/incus/v6/internal/server/request"
"github.com/lxc/incus/v6/internal/server/response"
"github.com/lxc/incus/v6/internal/version"
"github.com/lxc/incus/v6/shared/api"
)
// swagger:operation POST /1.0/instances/{name}/rebuild instances instance_rebuild_post
//
// Rebuild an instance
//
// Rebuild an instance using an alternate image or as empty.
// ---
// consumes:
// - application/octet-stream
// produces:
// - application/json
// parameters:
// - in: query
// name: project
// description: Project name
// type: string
// example: default
// - in: body
// name: instance
// description: InstanceRebuild request
// required: true
// schema:
// $ref: "#/definitions/InstanceRebuildPost"
// responses:
// "200":
// $ref: "#/responses/EmptySyncResponse"
// "202":
// $ref: "#/responses/Operation"
// "400":
// $ref: "#/responses/BadRequest"
// "403":
// $ref: "#/responses/Forbidden"
// "404":
// $ref: "#/responses/NotFound"
// "500":
// $ref: "#/responses/InternalServerError"
func instanceRebuildPost(d *Daemon, r *http.Request) response.Response {
s := d.State()
targetProjectName := request.ProjectParam(r)
name, err := url.PathUnescape(mux.Vars(r)["name"])
if err != nil {
return response.SmartError(err)
}
if internalInstance.IsSnapshot(name) {
return response.BadRequest(errors.New("Invalid instance name"))
}
// Handle requests targeted to a container on a different node
resp, err := forwardedResponseIfInstanceIsRemote(s, r, targetProjectName, name)
if err != nil {
return response.SmartError(err)
}
if resp != nil {
return resp
}
// Parse the request
req := api.InstanceRebuildPost{}
err = json.NewDecoder(r.Body).Decode(&req)
if err != nil {
return response.BadRequest(err)
}
var targetProject *api.Project
var sourceImage *api.Image
var inst instance.Instance
var sourceImageRef string
err = s.DB.Cluster.Transaction(r.Context(), func(ctx context.Context, tx *db.ClusterTx) error {
dbProject, err := dbCluster.GetProject(ctx, tx.Tx(), targetProjectName)
if err != nil {
return fmt.Errorf("Failed loading project: %w", err)
}
targetProject, err = dbProject.ToAPI(ctx, tx.Tx())
if err != nil {
return err
}
dbInst, err := dbCluster.GetInstance(ctx, tx.Tx(), targetProject.Name, name)
if err != nil {
return fmt.Errorf("Failed loading instance: %w", err)
}
if req.Source.Type != "none" {
sourceImage, err = getSourceImageFromInstanceSource(ctx, s, tx, targetProject.Name, req.Source, &sourceImageRef, dbInst.Type.String())
if err != nil && !api.StatusErrorCheck(err, http.StatusNotFound) {
return err
}
}
return nil
})
if err != nil {
return response.SmartError(err)
}
inst, err = instance.LoadByProjectAndName(s, targetProject.Name, name)
if err != nil {
return response.SmartError(err)
}
if inst.IsRunning() {
return response.BadRequest(errors.New("Instance must be stopped to be rebuilt"))
}
run := func(op *operations.Operation) error {
if req.Source.Type == "none" {
return instanceRebuildFromEmpty(inst, op)
}
if req.Source.Server != "" {
sourceImage, err = ensureDownloadedImageFitWithinBudget(context.TODO(), s, r, op, *targetProject, sourceImageRef, req.Source, inst.Type().String())
if err != nil {
return err
}
}
if sourceImage == nil {
return errors.New("Image not provided for instance rebuild")
}
return instanceRebuildFromImage(context.TODO(), s, r, inst, sourceImage, op)
}
resources := map[string][]api.URL{}
resources["instances"] = []api.URL{*api.NewURL().Path(version.APIVersion, "instances", name)}
op, err := operations.OperationCreate(s, targetProject.Name, operations.OperationClassTask, operationtype.InstanceRebuild, resources, nil, run, nil, nil, r)
if err != nil {
return response.InternalError(err)
}
return operations.OperationResponse(op)
}
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