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| 1 | +/* |
| 2 | +Copyright 2024. |
| 3 | +
|
| 4 | +Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | +you may not use this file except in compliance with the License. |
| 6 | +You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | +Unless required by applicable law or agreed to in writing, software |
| 11 | +distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | +See the License for the specific language governing permissions and |
| 14 | +limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package api |
| 18 | + |
| 19 | +import ( |
| 20 | + "errors" |
| 21 | + "fmt" |
| 22 | + "net/http" |
| 23 | + |
| 24 | + "github.com/julienschmidt/httprouter" |
| 25 | + kubefloworgv1beta1 "github.com/kubeflow/notebooks/workspaces/controller/api/v1beta1" |
| 26 | + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 27 | + "k8s.io/apimachinery/pkg/util/validation/field" |
| 28 | + |
| 29 | + "github.com/kubeflow/notebooks/workspaces/backend/internal/auth" |
| 30 | + "github.com/kubeflow/notebooks/workspaces/backend/internal/helper" |
| 31 | + models "github.com/kubeflow/notebooks/workspaces/backend/internal/models/workspaces/actions" |
| 32 | + repository "github.com/kubeflow/notebooks/workspaces/backend/internal/repositories/workspaces" |
| 33 | +) |
| 34 | + |
| 35 | +type WorkspaceActionPauseEnvelope Envelope[*models.WorkspaceActionPause] |
| 36 | + |
| 37 | +// PauseActionWorkspaceHandler handles setting the paused state of a workspace. |
| 38 | +// |
| 39 | +// @Summary Pause or unpause a workspace |
| 40 | +// @Description Pauses or unpauses a workspace, stopping or resuming all associated pods. |
| 41 | +// @Tags workspaces |
| 42 | +// @Accept json |
| 43 | +// @Produce json |
| 44 | +// @Param namespace path string true "Namespace of the workspace" extensions(x-example=default) |
| 45 | +// @Param workspaceName path string true "Name of the workspace" extensions(x-example=my-workspace) |
| 46 | +// @Param body body WorkspaceActionPauseEnvelope true "Intended pause state of the workspace" |
| 47 | +// @Success 200 {object} WorkspaceActionPauseEnvelope "Successful action. Returns the current pause state." |
| 48 | +// @Failure 400 {object} ErrorEnvelope "Bad Request." |
| 49 | +// @Failure 401 {object} ErrorEnvelope "Unauthorized. Authentication is required." |
| 50 | +// @Failure 403 {object} ErrorEnvelope "Forbidden. User does not have permission to access the workspace." |
| 51 | +// @Failure 404 {object} ErrorEnvelope "Not Found. Workspace does not exist." |
| 52 | +// @Failure 422 {object} ErrorEnvelope "Unprocessable Entity. Workspace is not in appropriate state." |
| 53 | +// @Failure 500 {object} ErrorEnvelope "Internal server error. An unexpected error occurred on the server." |
| 54 | +// @Router /workspaces/{namespace}/{workspaceName}/actions/pause [post] |
| 55 | +func (a *App) PauseActionWorkspaceHandler(w http.ResponseWriter, r *http.Request, ps httprouter.Params) { |
| 56 | + namespace := ps.ByName(NamespacePathParam) |
| 57 | + workspaceName := ps.ByName(ResourceNamePathParam) |
| 58 | + |
| 59 | + // validate path parameters |
| 60 | + var valErrs field.ErrorList |
| 61 | + valErrs = append(valErrs, helper.ValidateFieldIsDNS1123Subdomain(field.NewPath(NamespacePathParam), namespace)...) |
| 62 | + valErrs = append(valErrs, helper.ValidateFieldIsDNS1123Subdomain(field.NewPath(ResourceNamePathParam), workspaceName)...) |
| 63 | + if len(valErrs) > 0 { |
| 64 | + a.failedValidationResponse(w, r, errMsgPathParamsInvalid, valErrs, nil) |
| 65 | + return |
| 66 | + } |
| 67 | + |
| 68 | + // validate the Content-Type header |
| 69 | + if success := a.ValidateContentType(w, r, "application/json"); !success { |
| 70 | + return |
| 71 | + } |
| 72 | + |
| 73 | + // decode the request body |
| 74 | + bodyEnvelope := &WorkspaceActionPauseEnvelope{} |
| 75 | + err := a.DecodeJSON(r, bodyEnvelope) |
| 76 | + if err != nil { |
| 77 | + a.badRequestResponse(w, r, fmt.Errorf("error decoding request body: %w", err)) |
| 78 | + return |
| 79 | + } |
| 80 | + |
| 81 | + // validate the request body |
| 82 | + dataPath := field.NewPath("data") |
| 83 | + if bodyEnvelope.Data == nil { |
| 84 | + valErrs = field.ErrorList{field.Required(dataPath, "data is required")} |
| 85 | + a.failedValidationResponse(w, r, errMsgRequestBodyInvalid, valErrs, nil) |
| 86 | + return |
| 87 | + } |
| 88 | + |
| 89 | + workspaceActionPause := bodyEnvelope.Data |
| 90 | + |
| 91 | + // =========================== AUTH =========================== |
| 92 | + authPolicies := []*auth.ResourcePolicy{ |
| 93 | + auth.NewResourcePolicy( |
| 94 | + auth.ResourceVerbUpdate, |
| 95 | + &kubefloworgv1beta1.Workspace{ |
| 96 | + ObjectMeta: metav1.ObjectMeta{ |
| 97 | + Namespace: namespace, |
| 98 | + Name: workspaceName, |
| 99 | + }, |
| 100 | + }, |
| 101 | + ), |
| 102 | + } |
| 103 | + if success := a.requireAuth(w, r, authPolicies); !success { |
| 104 | + return |
| 105 | + } |
| 106 | + // ============================================================ |
| 107 | + |
| 108 | + // Execute the workspace action |
| 109 | + workspaceActionPauseState, err := a.repositories.Workspace.HandlePauseAction(r.Context(), namespace, workspaceName, workspaceActionPause) |
| 110 | + if err != nil { |
| 111 | + if errors.Is(err, repository.ErrWorkspaceNotFound) { |
| 112 | + a.notFoundResponse(w, r) |
| 113 | + return |
| 114 | + } |
| 115 | + if errors.Is(err, repository.ErrWorkspaceInvalidState) { |
| 116 | + a.failedValidationResponse(w, r, err.Error(), nil, nil) |
| 117 | + return |
| 118 | + } |
| 119 | + a.serverErrorResponse(w, r, err) |
| 120 | + return |
| 121 | + } |
| 122 | + |
| 123 | + // Return 200 OK with pause state |
| 124 | + responseEnvelope := &WorkspaceActionPauseEnvelope{ |
| 125 | + Data: workspaceActionPauseState, |
| 126 | + } |
| 127 | + a.dataResponse(w, r, responseEnvelope) |
| 128 | +} |
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