無法從 GoLang 運行 Cadence 工作流程

根據php小編香蕉了解，最近有使用者反映在GoLang環境中無法成功運行Cadence工作流程。 Cadence是一款強大的分散式工作流引擎，但在GoLang環境下可能會遇到一些問題。這些問題可能涉及到配置、版本相容性等方面。如果你也遇到類似的問題，不妨嘗試檢查配置和版本相容性，或查閱官方文件和社群討論，以獲取更多解決方案。

問題內容

我對 cadence 很陌生，正在嘗試實作 hello world，但出現了以下錯誤

2023-10-05T10:30:50.695+0530    INFO    internal/internal_worker.go:834 Started Workflow Worker {"Domain": "test-domain", "TaskList": "cadence-samples-worker", "WorkerID": "[email protected]@cadence-samples-worker@256dcb1f-1769-4183-9604-174160f79e7a"}
2023-10-05T10:30:50.724+0530    INFO    internal/internal_worker.go:859 Started Activity Worker {"Domain": "test-domain", "TaskList": "cadence-samples-worker", "WorkerID": "[email protected]@cadence-samples-worker@256dcb1f-1769-4183-9604-174160f79e7a"}
2023-10-05T10:30:50.724+0530    INFO    cadence-test/worker.go:49       Started Worker. {"worker": "cadence-samples-worker"}
2023-10-05T10:30:50.724+0530    ERROR   cadence-test/trigger.go:32      Failed to create workflow       {"error": "BadRequestError{Message: missing TTL}"}

下面是我的 Go 程式碼

func startWorkflow() {
    // This workflow ID can be user business logic identifier as well.
    workflowID := "cron_" + uuid.New().String()
    startTime := int32(60)
    domainName := "test-domain"

    logger, workflowClient := BuildLogger(), BuildCadenceClient()

    startRequest := shared.StartWorkflowExecutionRequest{
        WorkflowId: &workflowID,
        Domain:     &domainName,
        TaskList: &shared.TaskList{
            Name: &domainName,
        },
        ExecutionStartToCloseTimeoutSeconds: &startTime,
        TaskStartToCloseTimeoutSeconds:      &startTime,
        //DecisionTaskStartToCloseTimeout: time.Minute,

    }

    we, err := workflowClient.StartWorkflowExecution(context.Background(), &startRequest)
    if err != nil {
        logger.Error("Failed to create workflow", zap.Error(err))
        panic("Failed to create workflow.")
    } else {
        logger.Info("Started Workflow", zap.String("WorkflowID", *we.RunId), zap.String("RunID", *we.RunId))
    }
}

這些是我的 go.mod 中的依賴項

module cadence-test

go 1.21

require (
    github.com/google/uuid v1.3.0
    github.com/uber-go/tally v3.3.15+incompatible
    github.com/uber/cadence-idl v0.0.0-20230905165949-03586319b849
    go.uber.org/cadence v1.0.2
    go.uber.org/yarpc v1.70.4
    go.uber.org/zap v1.13.0
)

require (
    github.com/BurntSushi/toml v0.4.1 // indirect
    github.com/apache/thrift v0.16.0 // indirect
    github.com/beorn7/perks v1.0.1 // indirect
    github.com/cespare/xxhash/v2 v2.1.1 // indirect
    github.com/cristalhq/jwt/v3 v3.1.0 // indirect
    github.com/davecgh/go-spew v1.1.1 // indirect
    github.com/facebookgo/clock v0.0.0-20150410010913-600d898af40a // indirect
    github.com/go-ole/go-ole v1.2.6 // indirect
    github.com/gogo/googleapis v1.3.2 // indirect
    github.com/gogo/protobuf v1.3.2 // indirect
    github.com/gogo/status v1.1.0 // indirect
    github.com/golang/mock v1.6.0 // indirect
    github.com/golang/protobuf v1.5.2 // indirect
    github.com/google/go-cmp v0.5.8 // indirect
    github.com/kr/pretty v0.3.0 // indirect
    github.com/marusama/semaphore/v2 v2.5.0 // indirect
    github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
    github.com/opentracing/opentracing-go v1.2.0 // indirect
    github.com/pborman/uuid v0.0.0-20180906182336-adf5a7427709 // indirect
    github.com/pmezard/go-difflib v1.0.0 // indirect
    github.com/prometheus/client_golang v1.11.1 // indirect
    github.com/prometheus/client_model v0.2.0 // indirect
    github.com/prometheus/common v0.26.0 // indirect
    github.com/prometheus/procfs v0.6.0 // indirect
    github.com/robfig/cron v1.2.0 // indirect
    github.com/shirou/gopsutil v3.21.11+incompatible // indirect
    github.com/stretchr/objx v0.5.0 // indirect
    github.com/stretchr/testify v1.8.1 // indirect
    github.com/tklauser/go-sysconf v0.3.11 // indirect
    github.com/tklauser/numcpus v0.6.0 // indirect
    github.com/uber-go/mapdecode v1.0.0 // indirect
    github.com/uber/tchannel-go v1.33.0 // indirect
    github.com/yusufpapurcu/wmi v1.2.3 // indirect
    go.uber.org/atomic v1.10.0 // indirect
    go.uber.org/dig v1.10.0 // indirect
    go.uber.org/fx v1.13.1 // indirect
    go.uber.org/multierr v1.6.0 // indirect
    go.uber.org/net/metrics v1.3.0 // indirect
    go.uber.org/thriftrw v1.29.2 // indirect
    golang.org/x/exp/typeparams v0.0.0-20220218215828-6cf2b201936e // indirect
    golang.org/x/lint v0.0.0-20210508222113-6edffad5e616 // indirect
    golang.org/x/mod v0.8.0 // indirect
    golang.org/x/net v0.14.0 // indirect
    golang.org/x/sys v0.11.0 // indirect
    golang.org/x/text v0.12.0 // indirect
    golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
    golang.org/x/tools v0.6.0 // indirect
    google.golang.org/genproto v0.0.0-20220617124728-180714bec0ad // indirect
    google.golang.org/grpc v1.47.0 // indirect
    google.golang.org/protobuf v1.28.0 // indirect
    gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
    gopkg.in/yaml.v2 v2.4.0 // indirect
    gopkg.in/yaml.v3 v3.0.1 // indirect
    honnef.co/go/tools v0.3.2 // indirect
)

有人可以幫忙嗎？

解決方法

問題來自這一行 we, err :=workflowClient.StartWorkflowExecution(context.Background(), &startRequest)

這其實不是 Cadence 問題，而是 yarpc 問題。 yarpc 需要一個帶有超時的上下文，因此如果您更改為使用 context.WithTimeout，您應該解決第一個問題。

我注意到的另一個問題是，在請求中，您可能會錯過 RequestID 欄位。它必須是 UUID，因此簡單地傳遞字串是行不通的。但是，如果您使用Cadence CLI直接呼叫工作流程，則不需要指定它們。 CLI 簡化了一些輸入參數，這種不一致是預料之中的。

以上是無法從 GoLang 運行 Cadence 工作流程的詳細內容。更多資訊請關注PHP中文網其他相關文章！