tasks/service/history/api/unpauseactivity/api.go

// The MIT License
//
// Copyright (c) 2024 Temporal Technologies Inc.  All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

package unpauseactivity

import (
	"context"
	"fmt"

	"go.temporal.io/api/serviceerror"
	"go.temporal.io/api/workflowservice/v1"
	"go.temporal.io/server/api/historyservice/v1"
	"go.temporal.io/server/common/definition"
	"go.temporal.io/server/service/history/api"
	"go.temporal.io/server/service/history/consts"
	"go.temporal.io/server/service/history/shard"
	"go.temporal.io/server/service/history/workflow"
)

func Invoke(
	ctx context.Context,
	request *historyservice.UnpauseActivityRequest,
	shardContext shard.Context,
	workflowConsistencyChecker api.WorkflowConsistencyChecker,
) (resp *historyservice.UnpauseActivityResponse, retError error) {
	var response *historyservice.UnpauseActivityResponse

	err := api.GetAndUpdateWorkflowWithNew(
		ctx,
		nil,
		definition.NewWorkflowKey(
			request.NamespaceId,
			request.GetFrontendRequest().WorkflowId,
			request.GetFrontendRequest().RunId,
		),
		func(workflowLease api.WorkflowLease) (*api.UpdateWorkflowAction, error) {
			mutableState := workflowLease.GetMutableState()
			var err error
			response, err = processUnpauseActivityRequest(shardContext, mutableState, request)
			if err != nil {
				return nil, err
			}
			return &api.UpdateWorkflowAction{
				Noop:               false,
				CreateWorkflowTask: false,
			}, nil
		},
		nil,
		shardContext,
		workflowConsistencyChecker,
	)

	if err != nil {
		return nil, err
	}

	return response, err
}

func processUnpauseActivityRequest(
	shardContext shard.Context,
	mutableState workflow.MutableState,
	request *historyservice.UnpauseActivityRequest,
) (*historyservice.UnpauseActivityResponse, error) {

	if !mutableState.IsWorkflowExecutionRunning() {
		return nil, consts.ErrWorkflowCompleted
	}
	frontendRequest := request.GetFrontendRequest()
	activityId := frontendRequest.GetActivityId()

	ai, activityFound := mutableState.GetActivityByActivityID(activityId)

	if !activityFound {
		return nil, consts.ErrActivityNotFound
	}

	if !ai.Paused {
		// do nothing
		return &historyservice.UnpauseActivityResponse{}, nil
	}

	switch op := request.GetFrontendRequest().Operation.(type) {
	case *workflowservice.UnpauseActivityByIdRequest_Resume:
		return workflow.UnpauseActivityWithResume(shardContext, mutableState, ai, op.Resume.NoWait)

	case *workflowservice.UnpauseActivityByIdRequest_Reset_:
		return workflow.UnpauseActivityWithReset(shardContext, mutableState, ai, op.Reset_.NoWait, op.Reset_.ResetHeartbeat)
	default:
		return nil, serviceerror.NewInvalidArgument(fmt.Sprintf("The operation type %T is not supported", op))
	}
}