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testing_workflow.go
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testing_workflow.go
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package gotemporalplayground
import (
"context"
"encoding/base64"
"errors"
"fmt"
"net/http"
"time"
"go.temporal.io/sdk/activity"
"go.temporal.io/sdk/workflow"
)
type WorkflowParam struct {
X string
Y int
}
type WorkflowResult struct {
X string `json:"x"`
Y int `json:"y"`
}
type ActivityParam struct {
X string
Y int
}
type ActivityResult struct {
X string `json:"x"`
Y int `json:"y"`
}
type TestingSignal struct {
Message string `json:"message"`
}
func TestingWorkflow(ctx workflow.Context, param WorkflowParam) (*WorkflowResult, error) {
var signal TestingSignal
currentState := STATE_RUNNING
signalChan := workflow.GetSignalChannel(ctx, SignalName)
err := workflow.SetQueryHandler(ctx, QueryTypeCurrentState, func() (string, error) {
return currentState, nil
})
if err != nil {
currentState = STATE_FAILED_TO_REGISTER_QUERY_HANDLER
return nil, err
}
// Run some stuff while waiting for signal
// workflow.Go(ctx, func(ctx workflow.Context) {
// for {
// selector := workflow.NewSelector(ctx)
// selector.AddReceive(signalChan, func(c workflow.ReceiveChannel, more bool) {
// c.Receive(ctx, &signal)
// })
// selector.Select(ctx)
// }
// })
// block until signal received
currentState = STATE_WAITING_SIGNAL
signalChan.Receive(ctx, &signal)
if len(signal.Message) > 0 && signal.Message == SignalAbort {
currentState = STATE_ABORTED
return nil, errors.New("workflow aborted")
}
var activityResult *ActivityResult
ctx = workflow.WithActivityOptions(ctx, workflow.ActivityOptions{
StartToCloseTimeout: 10 * time.Second,
})
currentState = STATE_WAITING_ACTIVITY
workflow.ExecuteActivity(ctx, TestingActivity, ActivityParam{X: param.X, Y: param.Y}).Get(ctx, &activityResult)
workflowResult := &WorkflowResult{X: activityResult.X, Y: activityResult.Y}
currentState = STATE_WAITING_TIMER
workflow.Sleep(ctx, 3*time.Second)
currentState = STATE_DONE
return workflowResult, nil
}
func TestingActivity(ctx context.Context, param ActivityParam) (*ActivityResult, error) {
time.Sleep(2 * time.Second)
_, err := http.Get(fmt.Sprintf("http://localhost:8091/resume?taskToken=%s", base64.URLEncoding.EncodeToString(activity.GetInfo(ctx).TaskToken)))
if err != nil {
return nil, err
}
return nil, activity.ErrResultPending
}
const (
WorkflowId = "TestingWorkflow"
WorkflowTaskQueue = "Testing Queue"
SignalName = "Testing Signal"
SignalAbort = "abort"
QueryTypeCurrentState = "current_state"
STATE_RUNNING = "running"
STATE_ABORTED = "aborted"
STATE_FAILED_TO_REGISTER_QUERY_HANDLER = "failed to register query handler"
STATE_WAITING_SIGNAL = "waiting for signal"
STATE_WAITING_TIMER = "waiting for timer"
STATE_WAITING_ACTIVITY = "waiting for activity"
STATE_DONE = "done"
STATE_NOT_RUNNING = "not running"
STATE_UNKNOWN = "unknown"
)