{"id":7151,"date":"2023-11-17T16:05:06","date_gmt":"2023-11-17T08:05:06","guid":{"rendered":"https:\/\/i007.vip:15443\/wordpress\/?p=7151"},"modified":"2023-11-17T16:05:06","modified_gmt":"2023-11-17T08:05:06","slug":"seata%e8%a7%a3%e6%9e%90-saga%e6%a8%a1%e5%bc%8f%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/7151","title":{"rendered":"Seata\u89e3\u6790-saga\u6a21\u5f0f\u4ecb\u7ecd"},"content":{"rendered":"

cc from<\/a><\/p>\n

1987\u5e74\u666e\u6797\u65af\u987f\u5927\u5b66\u7684Hector Garcia-Molina\u548cKenneth Salem\u53d1\u8868\u4e86\u4e00\u7bc7Paper Sagas\u7684\u8bba\u6587\uff0c\u8bb2\u8ff0\u4e86saga\u6a21\u5f0f\u5982\u4f55\u5904\u7406\u957f\u4e8b\u52a1\u3002
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\u5206\u5e03\u5f0f\u4e8b\u52a1\uff1aSaga\u6a21\u5f0f<\/p>\n

saga\u63d0\u4f9b\u4e86\u4e24\u79cd\u5b9e\u73b0\u65b9\u5f0f\uff0c\u4e00\u79cd\u662f\u7f16\u6392\uff0c\u53e6\u4e00\u79cd\u662f\u63a7\u5236\u3002seata\u7684\u5b9e\u73b0\u65b9\u5f0f\u662f\u540e\u8005\u3002seata\u7684\u63a7\u5236\u5668\u4f7f\u7528\u72b6\u6001\u673a\u9a71\u52a8\u4e8b\u52a1\u6267\u884c\u3002
\n\u540cAT\u6a21\u5f0f\uff0c\u5728saga\u6a21\u5f0f\u4e0b\uff0cseata\u4e5f\u63d0\u4f9b\u4e86RM\u3001TM\u548cTC\u4e09\u4e2a\u89d2\u8272\u3002TC\u4e5f\u662f\u4f4d\u4e8esever\u7aef\uff0cRM\u548cTM\u4f4d\u4e8e\u5ba2\u6237\u7aef\u3002TM\u7528\u4e8e\u5f00\u542f\u5168\u5c40\u4e8b\u52a1\uff0cRM\u5f00\u542f\u5206\u652f\u4e8b\u52a1\uff0cTC\u76d1\u63a7\u4e8b\u52a1\u8fd0\u884c\u3002
\n\u5728\u4f7f\u7528saga\u6a21\u5f0f\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u5b9a\u4e49\u597d\u72b6\u6001\u673a\uff0cseata\u63d0\u4f9b\u4e86\u7f51\u5740\u53ef\u4ee5\u53ef\u89c6\u5316\u7f16\u8f91\u72b6\u6001\u673a\uff1a<\/p>\n

http:\/\/seata.io\/saga_designer\/index.html<\/p>\n

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{
\n“Name”: “reduceInventoryAndBalance”,\/\/\u5b9a\u4e49\u72b6\u6001\u673a\u7684\u540d\u5b57
\n“Comment”: “reduce inventory then reduce balance in a transaction”,
\n“StartState”: “ReduceInventory”,\/\/\u5b9a\u4e49\u72b6\u6001\u673a\u7684\u521d\u59cb\u72b6\u6001\uff0c\u4e5f\u5c31\u662f\u72b6\u6001\u673a\u5f00\u59cb\u8fd0\u884c\u65f6\u7b2c\u4e00\u4e2a\u6267\u884c\u7684\u72b6\u6001
\n“Version”: “0.0.1”,
\n\/\/\u4e0b\u9762\u662f\u72b6\u6001\u7684\u5b9a\u4e49
\n“States”: {
\n“ReduceInventory”: {
\n“Type”: “ServiceTask”,\/\/\u72b6\u6001\u7c7b\u578b\uff0c\u8be5\u7c7b\u578b\u72b6\u6001\u8868\u793a\u4e00\u4e2a\u5206\u652f\u4e8b\u52a1
\n“ServiceName”: “inventoryAction”,\/\/\u8c03\u7528\u7684bean\u5bf9\u8c61\u540d\uff0c\u5f53\u524d\u7248\u672c\u53ea\u652f\u6301spring\u5bb9\u5668\u7684bean
\n“ServiceMethod”: “reduce”,\/\/\u8c03\u7528\u7684\u65b9\u6cd5
\n“CompensateState”: “CompensateReduceInventory”,\/\/\u5982\u679c\u4e8b\u52a1\u9700\u8981\u56de\u6eda\uff0c\u90a3\u4e48\u5c31\u8c03\u7528\u8be5\u8865\u507f\u72b6\u6001
\n“Next”: “ChoiceState”,\/\/\u5f53\u524d\u72b6\u6001\u6267\u884c\u6210\u529f\u540e\uff0c\u4e0b\u4e00\u4e2a\u9700\u8981\u6267\u884c\u7684\u72b6\u6001
\n\/\/\u6267\u884cServiceMethod\u65b9\u6cd5\u7684\u5165\u53c2
\n“Input”: [
\n“$.[businessKey]”,
\n“$.[count]”
\n],
\n\/\/ServiceMethod\u65b9\u6cd5\u7684\u8fd4\u56de\u503c
\n“Output”: {
\n“reduceInventoryResult”: “$.#root”
\n},
\n\/\/\u5224\u65ad\u5f53\u524d\u72b6\u6001\u6267\u884c\u540e\uff0c\u662f\u5426\u6210\u529f
\n“Status”: {
\n“#root == true”: “SU”,
\n“#root == false”: “FA”,
\n“$Exception{java.lang.Throwable}”: “UN”
\n}
\n},
\n\/\/\u9009\u62e9\u72b6\u6001\uff0c\u8be5\u72b6\u6001\u91cc\u9762\u6709\u4e00\u4e2a\u5224\u65ad\uff0c\u53ef\u4ee5\u6839\u636e\u5224\u65ad\u7ed3\u679c\u6267\u884c\u4e0d\u540c\u7684\u72b6\u6001
\n“ChoiceState”:{
\n“Type”: “Choice”,
\n“Choices”:[
\n{
\n“Expression”:”[reduceInventoryResult] == true”,
\n“Next”:”ReduceBalance”
\n}
\n],
\n“Default”:”Fail”
\n},
\n“ReduceBalance”: {
\n“Type”: “ServiceTask”,
\n“ServiceName”: “balanceAction”,
\n“ServiceMethod”: “reduce”,
\n“CompensateState”: “CompensateReduceBalance”,
\n“Input”: [
\n“$.[businessKey]”,
\n“$.[amount]”,
\n{
\n“throwException” : “$.[mockReduceBalanceFail]”
\n}
\n],
\n“Output”: {
\n“compensateReduceBalanceResult”: “$.#root”
\n},
\n“Status”: {
\n“#root == true”: “SU”,
\n“#root == false”: “FA”,
\n“$Exception{java.lang.Throwable}”: “UN”
\n},
\n\/\/\u5982\u679c\u5f53\u524d\u72b6\u6001\u6267\u884c\u8fc7\u7a0b\u4e2d\u629b\u51fa\u5f02\u5e38\uff0c\u8fd9\u91cc\u53ef\u4ee5\u6355\u83b7\u5f02\u5e38\uff0c\u5e76\u6267\u884cNext\u72b6\u6001
\n“Catch”: [
\n{
\n“Exceptions”: [
\n“java.lang.Throwable”
\n],
\n“Next”: “CompensationTrigger”
\n}
\n],
\n“Next”: “Succeed”
\n},
\n“CompensateReduceInventory”: {
\n“Type”: “ServiceTask”,
\n“ServiceName”: “inventoryAction”,
\n“ServiceMethod”: “compensateReduce”,
\n“Input”: [
\n“$.[businessKey]”
\n]
\n},
\n“CompensateReduceBalance”: {
\n“Type”: “ServiceTask”,
\n“ServiceName”: “balanceAction”,
\n“ServiceMethod”: “compensateReduce”,
\n“Input”: [
\n“$.[businessKey]”
\n]
\n},
\n\/\/\u8865\u507f\u89e6\u53d1\u5668\u72b6\u6001\uff0c\u8be5\u72b6\u6001\u8868\u793a\u72b6\u6001\u673a\u8fdb\u5165\u8865\u507f\uff0c\u63a5\u4e0b\u6765\u8981\u5f00\u59cb\u6267\u884c\u5404\u4e2a\u72b6\u6001\u7684\u8865\u507f\u72b6\u6001\u4e86
\n“CompensationTrigger”: {
\n“Type”: “CompensationTrigger”,
\n“Next”: “Fail”
\n},
\n\/\/\u4e0b\u9762\u4e24\u4e2a\u72b6\u6001\u662f\u7ec8\u6b62\u72b6\u6001
\n“Succeed”: {
\n“Type”:”Succeed”
\n},
\n“Fail”: {
\n“Type”:”Fail”,
\n“ErrorCode”: “PURCHASE_FAILED”,
\n“Message”: “purchase failed”
\n}
\n}
\n}
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\u4e8b\u52a1\u8fd0\u884c\u8fc7\u7a0b\u4e2d\uff0c\u4e5f\u53ef\u80fd\u53d1\u751f\u56de\u6eda\u3002\u5f53\u5168\u5c40\u4e8b\u52a1\u9700\u8981\u56de\u6eda\u65f6\uff0cTC\u53d1\u8d77\u56de\u6eda\u8bf7\u6c42\uff0cseata\u6267\u884c\u8865\u507f\u72b6\u6001\u3002<\/p>\n

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TC\u901a\u77e5\u4e8b\u52a1\u56de\u6eda\u548c\u4e8b\u52a1\u6267\u884c\u5931\u8d25\u81ea\u52a8\u8865\u507f\u4e24\u4e2a\u573a\u666f\u5f88\u7c7b\u4f3c\uff0c\u90fd\u662f\u627e\u5230\u6240\u6709\u8981\u8865\u507f\u7684\u72b6\u6001\uff0c\u7136\u540e\u987a\u6b21\u8c03\u7528\u5bf9\u5e94\u7684\u8865\u507f\u903b\u8f91\uff0c\u4e0d\u540c\u7684\u662f\uff0c\u7b2c\u4e00\u4e2a\u573a\u666f\u6267\u884c\u5b8c\u6240\u6709\u7684\u8865\u507f\u72b6\u6001\u5c31\u7ed3\u675f\u4e86\uff0c\u800c\u7b2c\u4e8c\u4e2a\u573a\u666f\u662f\u6267\u884c\u5b8c\u540e\u8fd8\u8981\u6267\u884cCompensationTrigger\u7c7b\u578b\u72b6\u6001\u7684Next\u72b6\u6001\u3002\u53e6\u5916\u8865\u507f\u903b\u8f91\u4e0d\u80fd\u6709Next\u72b6\u6001\u3002\u8865\u507f\u903b\u8f91\u4f7f\u7528\u7684\u4e5f\u662f\u666e\u901aServiceTask\u7c7b\u578b\uff0c\u53ea\u4e0d\u8fc7\u662f\u9006\u5411\u903b\u8f91\u3002<\/p>\n

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cc from 1987\u5e74\u666e\u6797\u65af\u987f\u5927\u5b66\u7684<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[24],"tags":[121],"class_list":["post-7151","post","type-post","status-publish","format-standard","hentry","category-value_docs","tag-05-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/7151","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=7151"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/7151\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=7151"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=7151"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=7151"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}