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visibility.go
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visibility.go
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// Copyright (c) 2019 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 canary
import (
"context"
"errors"
"fmt"
"time"
"github.com/uber-go/tally"
"go.uber.org/cadence/.gen/go/shared"
"go.uber.org/cadence/activity"
"go.uber.org/cadence/workflow"
"go.uber.org/zap"
)
const (
timeSkewToleranceDuration = 5 * time.Minute
)
func init() {
registerWorkflow(visibilityWorkflow, wfTypeVisibility)
registerActivity(visibilityActivity, activityTypeVisibility)
}
// visibilityWorkflow tests the visibility apis
func visibilityWorkflow(ctx workflow.Context, inputScheduledTimeNanos int64) error {
scheduledTimeNanos := getScheduledTimeFromInputIfNonZero(ctx, inputScheduledTimeNanos)
var err error
profile, err := beginWorkflow(ctx, wfTypeVisibility, scheduledTimeNanos)
if err != nil {
return err
}
execInfo := workflow.GetInfo(ctx).WorkflowExecution
aCtx := workflow.WithActivityOptions(ctx, newActivityOptions())
// wait for visibility on ES {}
if err := workflow.Sleep(ctx, 2*time.Second); err != nil {
return profile.end(err)
}
now := workflow.Now(ctx).UnixNano()
err = workflow.ExecuteActivity(aCtx, activityTypeVisibility, now, execInfo).Get(ctx, nil)
if err != nil {
workflow.GetLogger(ctx).Error("visibility test failed", zap.Error(err))
return profile.end(err)
}
return profile.end(nil)
}
// visibilityActivity exercises the visibility apis
func visibilityActivity(ctx context.Context, scheduledTimeNanos int64, parentInfo workflow.Execution) error {
var err error
scope := activity.GetMetricsScope(ctx)
scope, sw := recordActivityStart(scope, activityTypeVisibility, scheduledTimeNanos)
defer recordActivityEnd(scope, sw, err)
client := getActivityContext(ctx).cadence
if err := listMyWorkflow(client, parentInfo.ID, scope); err != nil {
return err
}
if _, err := getMyHistory(client, parentInfo, scope); err != nil {
return err
}
return err
}
func listMyWorkflow(client cadenceClient, wfID string, scope tally.Scope) error {
pageSz := int32(1)
startTime := time.Now().UnixNano() - int64(timeSkewToleranceDuration)
endTime := time.Now().UnixNano() + int64(timeSkewToleranceDuration)
request := &shared.ListOpenWorkflowExecutionsRequest{
MaximumPageSize: &pageSz,
ExecutionFilter: &shared.WorkflowExecutionFilter{WorkflowId: &wfID},
StartTimeFilter: &shared.StartTimeFilter{
EarliestTime: &startTime,
LatestTime: &endTime,
},
}
scope.Counter(listOpenWorkflowsCount).Inc(1)
sw := scope.Timer(listOpenWorkflowsLatency).Start()
resp, err := client.ListOpenWorkflow(context.Background(), request)
sw.Stop()
if err != nil {
scope.Counter(listOpenWorkflowsFailureCount).Inc(1)
return err
}
if len(resp.Executions) != 1 {
scope.Counter(listOpenWorkflowsFailureCount).Inc(1)
err := fmt.Errorf("listOpenWorkflow returned %d executions, expected=1", len(resp.Executions))
return err
}
id := resp.Executions[0].Execution.GetWorkflowId()
if id != wfID {
scope.Counter(listOpenWorkflowsFailureCount).Inc(1)
err := fmt.Errorf("listOpenWorkflow returned wrong workflow id %v", id)
return err
}
return nil
}
func getMyHistory(client cadenceClient, execInfo workflow.Execution, scope tally.Scope) ([]*shared.HistoryEvent, error) {
scope.Counter(getWorkflowHistoryCount).Inc(1)
sw := scope.Timer(getWorkflowHistoryLatency).Start()
defer sw.Stop()
events := []*shared.HistoryEvent{}
iter := client.GetWorkflowHistory(context.Background(), execInfo.ID, execInfo.RunID, false, shared.HistoryEventFilterTypeAllEvent)
for iter.HasNext() {
event, err := iter.Next()
if err != nil {
scope.Counter(getWorkflowHistoryFailureCount).Inc(1)
return nil, err
}
events = append(events, event)
}
if len(events) == 0 {
return nil, errors.New("getWorkflowHistory returned history with 0 events")
}
return events, nil
}