feat(stacks): redeploy git stack [EE-161] (#5139)

* feat(git): save git config when creating stack (#5048)

* feat(git): save git config when creating stack

* chore(fs): test fileExists

* fix(git): fix tests to use CloneRepository

* refactor(git): move options to new object

* feat(stacks): redeploy git stack api (#5112)

* feat(stacks): redeploy git stacks form

[EE-666]

* feat(stack): show loading after confirmation

* fix(stacks): show same size description

* fix(stacks): reload state when deployed

* feat(stacks): set stopped stacks status to activate when updating

* feat(stacks): backup stack folder before cloning

* feat(stacks): don't accept prune and env on update git

Co-authored-by: Chaim Lev-Ari <chiptus@users.noreply.github.com>
Co-authored-by: Chaim Lev-Ari <chiptus@gmail.com>

api/http/handler/stacks/stack_update_git.go

@@ -0,0 +1,171 @@
+package stacks
+
+import (
+	"errors"
+	"fmt"
+	"log"
+	"net/http"
+	"time"
+
+	"github.com/asaskevich/govalidator"
+	httperror "github.com/portainer/libhttp/error"
+	"github.com/portainer/libhttp/request"
+	"github.com/portainer/libhttp/response"
+	portainer "github.com/portainer/portainer/api"
+	bolterrors "github.com/portainer/portainer/api/bolt/errors"
+	"github.com/portainer/portainer/api/filesystem"
+	httperrors "github.com/portainer/portainer/api/http/errors"
+	"github.com/portainer/portainer/api/http/security"
+	"github.com/portainer/portainer/api/internal/stackutils"
+)
+
+type updateStackGitPayload struct {
+	RepositoryReferenceName  string
+	RepositoryAuthentication bool
+	RepositoryUsername       string
+	RepositoryPassword       string
+}
+
+func (payload *updateStackGitPayload) Validate(r *http.Request) error {
+	if payload.RepositoryAuthentication && (govalidator.IsNull(payload.RepositoryUsername) || govalidator.IsNull(payload.RepositoryPassword)) {
+		return errors.New("Invalid repository credentials. Username and password must be specified when authentication is enabled")
+	}
+	return nil
+}
+
+// PUT request on /api/stacks/:id/git?endpointId=<endpointId>
+func (handler *Handler) stackUpdateGit(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}
+	}
+
+	stack, err := handler.DataStore.Stack().Stack(portainer.StackID(stackID))
+	if err == bolterrors.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}
+	}
+
+	if stack.GitConfig == nil {
+		return &httperror.HandlerError{http.StatusBadRequest, "Stack is not created from git", err}
+	}
+
+	// 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.DataStore.Endpoint().Endpoint(stack.EndpointID)
+	if err == bolterrors.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}
+	}
+
+	err = handler.requestBouncer.AuthorizedEndpointOperation(r, endpoint)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusForbidden, "Permission denied to access endpoint", err}
+	}
+
+	resourceControl, err := handler.DataStore.ResourceControl().ResourceControlByResourceIDAndType(stackutils.ResourceControlID(stack.EndpointID, stack.Name), portainer.StackResourceControl)
+	if err != nil {
+		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}
+	}
+
+	access, err := handler.userCanAccessStack(securityContext, endpoint.ID, resourceControl)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to verify user authorizations to validate stack access", err}
+	}
+	if !access {
+		return &httperror.HandlerError{http.StatusForbidden, "Access denied to resource", httperrors.ErrResourceAccessDenied}
+	}
+
+	var payload updateStackGitPayload
+	err = request.DecodeAndValidateJSONPayload(r, &payload)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusBadRequest, "Invalid request payload", err}
+	}
+
+	stack.GitConfig.ReferenceName = payload.RepositoryReferenceName
+
+	backupProjectPath := fmt.Sprintf("%s-old", stack.ProjectPath)
+	err = filesystem.MoveDirectory(stack.ProjectPath, backupProjectPath)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to move git repository directory", err}
+	}
+
+	err = handler.GitService.CloneRepository(stack.ProjectPath, stack.GitConfig.URL, payload.RepositoryReferenceName, payload.RepositoryUsername, payload.RepositoryPassword)
+	if err != nil {
+		restoreError := filesystem.MoveDirectory(backupProjectPath, stack.ProjectPath)
+		if restoreError != nil {
+			log.Printf("[WARN] [http,stacks,git] [error: %s] [message: failed restoring backup folder]", restoreError)
+		}
+
+		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to clone git repository", err}
+	}
+
+	httpErr := handler.deployStack(r, stack, endpoint)
+	if httpErr != nil {
+		return httpErr
+	}
+
+	err = handler.DataStore.Stack().UpdateStack(stack.ID, stack)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to persist the stack changes inside the database", err}
+	}
+
+	err = handler.FileService.RemoveDirectory(backupProjectPath)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusInternalServerError, "Unable to remove git repository directory", err}
+	}
+
+	return response.JSON(w, stack)
+}
+
+func (handler *Handler) deployStack(r *http.Request, stack *portainer.Stack, endpoint *portainer.Endpoint) *httperror.HandlerError {
+	if stack.Type == portainer.DockerSwarmStack {
+		config, httpErr := handler.createSwarmDeployConfig(r, stack, endpoint, false)
+		if httpErr != nil {
+			return httpErr
+		}
+
+		err := handler.deploySwarmStack(config)
+		if err != nil {
+			return &httperror.HandlerError{http.StatusInternalServerError, err.Error(), err}
+		}
+
+		stack.UpdateDate = time.Now().Unix()
+		stack.UpdatedBy = config.user.Username
+		stack.Status = portainer.StackStatusActive
+
+		return nil
+	}
+
+	config, httpErr := handler.createComposeDeployConfig(r, stack, endpoint)
+	if httpErr != nil {
+		return httpErr
+	}
+
+	err := handler.deployComposeStack(config)
+	if err != nil {
+		return &httperror.HandlerError{http.StatusInternalServerError, err.Error(), err}
+	}
+
+	stack.UpdateDate = time.Now().Unix()
+	stack.UpdatedBy = config.user.Username
+	stack.Status = portainer.StackStatusActive
+
+	return nil
+}