forked from uber-go/cadence-client
/
internal_public.go
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/
internal_public.go
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// Copyright (c) 2017 Uber Technologies, Inc.
//
// 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 internal
// WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING! WARNING!
// Any of the APIs in this file are not supported for application level developers
// and are subject to change without any notice.
//
// APIs that are internal to Cadence system developers and are public from the Go
// point of view only to access them from other packages.
import (
"time"
s "go.uber.org/cadence/.gen/go/shared"
)
type (
// HistoryIterator iterator through history events
HistoryIterator interface {
// GetNextPage returns next page of history events
GetNextPage() (*s.History, error)
// Reset resets the internal state so next GetNextPage() call will return first page of events from beginning.
Reset()
// HasNextPage returns if there are more page of events
HasNextPage() bool
}
// WorkflowExecutionContext represents one instance of workflow execution state in memory. Lock must be obtained before
// calling into any methods.
WorkflowExecutionContext interface {
Lock()
Unlock(err error)
ProcessWorkflowTask(task *s.PollForDecisionTaskResponse, historyIterator HistoryIterator) (completeRequest interface{}, err error)
ProcessLocalActivityResult(lar *localActivityResult) (interface{}, error)
// CompleteDecisionTask try to complete current decision task and get response that needs to be sent back to server.
// The waitLocalActivity is used to control if we should wait for outstanding local activities.
// If there is no outstanding local activities or if waitLocalActivity is false, the complete will return response
// which will be one of following:
// - RespondDecisionTaskCompletedRequest
// - RespondDecisionTaskFailedRequest
// - RespondQueryTaskCompletedRequest
// If waitLocalActivity is true, and there is outstanding local activities, this call will return nil.
CompleteDecisionTask(waitLocalActivity bool) interface{}
// GetDecisionTimeout returns the TaskStartToCloseTimeout
GetDecisionTimeout() time.Duration
GetCurrentDecisionTask() *s.PollForDecisionTaskResponse
StackTrace() string
}
// WorkflowTaskHandler represents decision task handlers.
WorkflowTaskHandler interface {
// Processes the workflow task
// The response could be:
// - RespondDecisionTaskCompletedRequest
// - RespondDecisionTaskFailedRequest
// - RespondQueryTaskCompletedRequest
ProcessWorkflowTask(
task *s.PollForDecisionTaskResponse,
historyIterator HistoryIterator) (response interface{}, w WorkflowExecutionContext, err error)
}
// ActivityTaskHandler represents activity task handlers.
ActivityTaskHandler interface {
// Executes the activity task
// The response is one of the types:
// - RespondActivityTaskCompletedRequest
// - RespondActivityTaskFailedRequest
// - RespondActivityTaskCanceledRequest
Execute(taskList string, task *s.PollForActivityTaskResponse) (interface{}, error)
}
)
var enableVerboseLogging = false
// EnableVerboseLogging enable or disable verbose logging. This is for internal use only.
func EnableVerboseLogging(enable bool) {
enableVerboseLogging = enable
}