本文為英文版的機器翻譯版本,如內容有任何歧義或不一致之處,概以英文版為準。
Amazon States Language
Amazon States Language 是一種以 JSON 為基礎的結構化語言,用於定義狀態機器、可執行工作 (狀態) 的Task
狀態集合、決定要轉換到下一個 (Choice
狀態) 的狀態、停止執行並出現錯誤 (Fail
狀態) 等等。
如需詳細資訊,請參閱 Amazon 狀態語言規格
若要使用 Amazon 州語言在 Step 函數主控台
注意
如果您在 Step Functions 的控制台之外定義狀態機器,例如在您選擇的編輯器中,則必須使用擴展名為. asl.json 來保存狀態機定義。
示例亞馬遜國家語言規範
{
"Comment": "An example of the Amazon States Language using a choice state.",
"StartAt": "FirstState",
"States": {
"FirstState": {
"Type": "Task",
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:FUNCTION_NAME
",
"Next": "ChoiceState"
},
"ChoiceState": {
"Type" : "Choice",
"Choices": [
{
"Variable": "$.foo",
"NumericEquals": 1,
"Next": "FirstMatchState"
},
{
"Variable": "$.foo",
"NumericEquals": 2,
"Next": "SecondMatchState"
}
],
"Default": "DefaultState"
},
"FirstMatchState": {
"Type" : "Task",
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:OnFirstMatch
",
"Next": "NextState"
},
"SecondMatchState": {
"Type" : "Task",
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:OnSecondMatch
",
"Next": "NextState"
},
"DefaultState": {
"Type": "Fail",
"Error": "DefaultStateError",
"Cause": "No Matches!"
},
"NextState": {
"Type": "Task",
"Resource": "arn:aws:lambda:us-east-1:123456789012:function:FUNCTION_NAME
",
"End": true
}
}
}