/
instance_state.go
264 lines (229 loc) · 6.76 KB
/
instance_state.go
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package main
import (
"encoding/json"
"fmt"
"net"
"net/http"
"net/url"
"time"
"github.com/gorilla/mux"
internalInstance "github.com/lxc/incus/v6/internal/instance"
"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 GET /1.0/instances/{name}/state instances instance_state_get
//
// Get the runtime state
//
// Gets the runtime state of the instance.
//
// This is a reasonably expensive call as it causes code to be run
// inside of the instance to retrieve the resource usage and network
// information.
//
// ---
// produces:
// - application/json
// parameters:
// - in: query
// name: project
// description: Project name
// type: string
// responses:
// "200":
// description: State
// schema:
// type: object
// description: Sync response
// properties:
// type:
// type: string
// description: Response type
// example: sync
// status:
// type: string
// description: Status description
// example: Success
// status_code:
// type: integer
// description: Status code
// example: 200
// metadata:
// $ref: "#/definitions/InstanceState"
// "400":
// $ref: "#/responses/BadRequest"
// "403":
// $ref: "#/responses/Forbidden"
// "500":
// $ref: "#/responses/InternalServerError"
func instanceState(d *Daemon, r *http.Request) response.Response {
s := d.State()
instanceType, err := urlInstanceTypeDetect(r)
if err != nil {
return response.SmartError(err)
}
projectName := 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(fmt.Errorf("Invalid instance name"))
}
// Handle requests targeted to a container on a different node
resp, err := forwardedResponseIfInstanceIsRemote(s, r, projectName, name, instanceType)
if err != nil {
return response.SmartError(err)
}
if resp != nil {
return resp
}
c, err := instance.LoadByProjectAndName(s, projectName, name)
if err != nil {
return response.SmartError(err)
}
hostInterfaces, _ := net.Interfaces()
state, err := c.RenderState(hostInterfaces)
if err != nil {
return response.InternalError(err)
}
return response.SyncResponse(true, state)
}
// swagger:operation PUT /1.0/instances/{name}/state instances instance_state_put
//
// Change the state
//
// Changes the running state of the instance.
//
// ---
// consumes:
// - application/json
// produces:
// - application/json
// parameters:
// - in: query
// name: project
// description: Project name
// type: string
// example: default
// - in: body
// name: state
// description: State
// required: false
// schema:
// $ref: "#/definitions/InstanceStatePut"
// responses:
// "202":
// $ref: "#/responses/Operation"
// "400":
// $ref: "#/responses/BadRequest"
// "403":
// $ref: "#/responses/Forbidden"
// "500":
// $ref: "#/responses/InternalServerError"
func instanceStatePut(d *Daemon, r *http.Request) response.Response {
s := d.State()
instanceType, err := urlInstanceTypeDetect(r)
if err != nil {
return response.SmartError(err)
}
projectName := 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(fmt.Errorf("Invalid instance name"))
}
// Handle requests targeted to a container on a different node
resp, err := forwardedResponseIfInstanceIsRemote(s, r, projectName, name, instanceType)
if err != nil {
return response.SmartError(err)
}
if resp != nil {
return resp
}
req := api.InstanceStatePut{}
// We default to -1 (i.e. no timeout) here instead of 0 (instant timeout).
req.Timeout = -1
err = json.NewDecoder(r.Body).Decode(&req)
if err != nil {
return response.BadRequest(err)
}
// Check if the cluster member is evacuated.
if s.DB.Cluster.LocalNodeIsEvacuated() && req.Action != "stop" {
return response.Forbidden(fmt.Errorf("Cluster member is evacuated"))
}
// Don't mess with instances while in setup mode.
<-d.waitReady.Done()
inst, err := instance.LoadByProjectAndName(s, projectName, name)
if err != nil {
return response.SmartError(err)
}
// Actually perform the change.
opType, err := instanceActionToOptype(req.Action)
if err != nil {
return response.BadRequest(err)
}
do := func(op *operations.Operation) error {
inst.SetOperation(op)
return doInstanceStatePut(inst, req)
}
resources := map[string][]api.URL{}
resources["instances"] = []api.URL{*api.NewURL().Path(version.APIVersion, "instances", name)}
op, err := operations.OperationCreate(s, projectName, operations.OperationClassTask, opType, resources, nil, do, nil, nil, r)
if err != nil {
return response.InternalError(err)
}
return operations.OperationResponse(op)
}
func instanceActionToOptype(action string) (operationtype.Type, error) {
switch internalInstance.InstanceAction(action) {
case internalInstance.Start:
return operationtype.InstanceStart, nil
case internalInstance.Stop:
return operationtype.InstanceStop, nil
case internalInstance.Restart:
return operationtype.InstanceRestart, nil
case internalInstance.Freeze:
return operationtype.InstanceFreeze, nil
case internalInstance.Unfreeze:
return operationtype.InstanceUnfreeze, nil
}
return operationtype.Unknown, fmt.Errorf("Unknown action: '%s'", action)
}
func doInstanceStatePut(inst instance.Instance, req api.InstanceStatePut) error {
if req.Force {
// A zero timeout indicates to do a forced stop/restart.
req.Timeout = 0
} else if req.Timeout < 0 {
// If no timeout requested set a high default shutdown timeout. This way if the instance does not
// respond to shutdown request the operation lock won't linger forever.
req.Timeout = 600
}
timeout := time.Duration(req.Timeout) * time.Second
switch internalInstance.InstanceAction(req.Action) {
case internalInstance.Start:
return inst.Start(req.Stateful)
case internalInstance.Stop:
if req.Stateful {
return inst.Stop(req.Stateful)
} else if req.Timeout == 0 {
return inst.Stop(false)
} else {
return inst.Shutdown(timeout)
}
case internalInstance.Restart:
return inst.Restart(timeout)
case internalInstance.Freeze:
return inst.Freeze()
case internalInstance.Unfreeze:
return inst.Unfreeze()
}
return fmt.Errorf("Unknown action: '%s'", req.Action)
}