{"id":44779,"date":"2023-01-15T16:17:31","date_gmt":"2024-02-09T11:28:28","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/44779-2\/"},"modified":"2024-04-29T09:58:52","modified_gmt":"2024-04-29T01:58:52","slug":"44779-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/44779-2\/","title":{"rendered":""},"content":{"rendered":"

\u4ed5\u4e8b\u3067\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u3092\u4f5c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u30bb\u30ea\u30d5\u7ba1\u7406\u306bstate machine\u304c\u4f7f\u3048\u308b\u304b\u3082\u3068\u3044\u3046\u3053\u3068\u3067\u3001golang \u3067 state machine\u3092\u89e6\u3063\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

state machine \u3068\u306f?<\/h1>\n
\"image.png\"<\/div>\n

\u56f3\u306e\u3088\u3046\u306b\u3001\u3042\u308b\u72b6\u614b\u304b\u3089\u3042\u308b\u72b6\u614b\u3078\u9077\u79fb\u3059\u308b\u306a\u3069\u306e\u69cb\u9020\u3092\u8868\u3057\u305f\u3082\u306e\u3067\u3059\u3002
\n\u306a\u306e\u3067\u3001\u73fe\u5728\u306estate -> \u9077\u79fb\u53ef\u80fd\u306astate ->\u3000\u6b21\u306estate\u306e\u60c5\u5831\u3092\u305d\u308c\u305e\u308c\u306enode\u304c\u6301\u3064\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n

\u5c1a\u6b63\u5f0f\u540d\u79f0\u306f finite state machine \u3068\u547c\u3076\u3001 state machine \u306f\u7701\u7565\u5f62\u306e\u3088\u3046\u3067\u3059\u3002<\/p>\n

golang\u3067\u306eFSM<\/h1>\n

https:\/\/github.com\/looplab\/fsm
\n\u4eca\u56de\u4f7f\u3063\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u4e0a\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n

node\u306e\u751f\u6210<\/h2>\n
const<\/span> (<\/span>\r\n        start<\/span>  =<\/span> \"start\"<\/span>\r\n        middle<\/span> =<\/span> \"middle\"<\/span>\r\n        end<\/span>    =<\/span> \"end\"<\/span>\r\n        finish<\/span> =<\/span> \"\"<\/span>\r\n    )<\/span>\r\n\r\n    eventTree<\/span> :=<\/span> fsm<\/span>.<\/span>Events<\/span>{<\/span>\r\n        {<\/span>\r\n            Name<\/span>:<\/span> start<\/span>,<\/span>\r\n            Src<\/span>:<\/span>  []<\/span>string<\/span>{<\/span>start<\/span>},<\/span>\r\n            Dst<\/span>:<\/span>  middle<\/span>,<\/span>\r\n        },<\/span>\r\n        {<\/span>\r\n            Name<\/span>:<\/span> middle<\/span>,<\/span>\r\n            Src<\/span>:<\/span>  []<\/span>string<\/span>{<\/span>start<\/span>},<\/span>\r\n            Dst<\/span>:<\/span>  end<\/span>,<\/span>\r\n        },<\/span>\r\n        {<\/span>\r\n            Name<\/span>:<\/span> end<\/span>,<\/span>\r\n            Src<\/span>:<\/span>  []<\/span>string<\/span>{<\/span>end<\/span>,<\/span>start<\/span>},<\/span>\r\n            Dst<\/span>:<\/span>  finish<\/span>,<\/span>\r\n        },<\/span>\r\n        {<\/span>\r\n            Name<\/span>:<\/span> finish<\/span>,<\/span>\r\n            Src<\/span>:<\/span>  []<\/span>string<\/span>{<\/span>finish<\/span>,<\/span>middle<\/span>},<\/span>\r\n            Dst<\/span>:<\/span>  finish<\/span>,<\/span>\r\n        },<\/span>\r\n    }<\/span>\r\n<\/code><\/pre>\n
\u3053\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306fEvent\u3068\u3044\u3046\u5358\u4f4d\u3067\u9077\u79fb\u30a4\u30d9\u30f3\u30c8\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002
\n\u305d\u308c\u305e\u308c\u3001<\/p>\n
\u540d
\n* Src : \u9077\u79fb\u5143\u306enode
\n* Dst : \u9077\u79fb\u5148\u306enode<\/p>\n
\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n
state machine \u306e\u751f\u6210<\/h2>\n
Event\u3092\u5b9a\u7fa9\u3057\u305f\u3089\u3001state machine\u3092\u751f\u6210\u3057\u307e\u3059\u3002
\n* \u521d\u671fnode\u540d
\n* \u5168\u4f53\u306enode\u306e\u914d\u5217
\n* \u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u95a2\u6570(\u7279\u5b9a\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u51e6\u7406\u3092\u5b9f\u884c\u3067\u304d\u308b\u3082\u306e\u3001\u4eca\u56de\u306f\u7701\u7565)<\/p>\n
    ownFsm<\/span> :=<\/span> fsm<\/span>.<\/span>NewFSM<\/span>(<\/span>\r\n        start<\/span>,<\/span>\r\n        eventTree<\/span>,<\/span>\r\n        fsm<\/span>.<\/span>Callbacks<\/span>{},<\/span>\r\n    )<\/span>\r\n<\/code><\/pre>\n
\u3053\u308c\u3067state machine\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002
\n\u3042\u3068\u306f\u521d\u671fnode\u304b\u3089\u9077\u79fb\u53ef\u80fd\u306anode\u3092\u6307\u5b9a\u3059\u308b\u3068\u9077\u79fb\u3067\u304d\u307e\u3059\u3002<\/p>\n
ownFsm<\/span>.<\/span>Current<\/span>()<\/span> \/\/ start <\/span>\r\nownFsm<\/span>.<\/span>Event<\/span>(<\/span>start<\/span>)<\/span> \/\/ start event\u304c\u767a\u706b\u3057\u3001Dst\u306enode\u3078\u9077\u79fb<\/span>\r\nownFsm<\/span>.<\/span>Current<\/span>()<\/span> \/\/ middle<\/span>\r\n<\/code><\/pre>\n
\u53ef\u8996\u5316<\/h2>\n
\u3053\u306e\u69cb\u9020\u3092\u982d\u306e\u4e2d\u3067\u6bce\u56de\u66f8\u304f\u306e\u306f\u975e\u5e38\u306b\u3057\u3093\u3069\u3044\u3067\u3059\u3002
\n\u3057\u304b\u3057\u3001\u3053\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001state machine\u3000\u3092\u53ef\u8996\u5316\u3059\u308b\u6a5f\u80fd\u304c\u3064\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n
fsm.VisualizeWithType(ownFsm,fsm.GRAPHVIZ)\r\n<\/code><\/pre>\n
\u3053\u3093\u306a\u5f62\u3067\u3001state machine\u3068\u53ef\u8996\u5316\u65b9\u5f0f\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001<\/p>\n
digraph fsm {\r\n    \"middle\" -> \"finish\" [ label = \"finish\" ];\r\n    \"end\" -> \"finish\" [ label = \"end\" ];\r\n    \"finish\" -> \"finish\" [ label = \"finish\" ];\r\n    \"start\" -> \"finish\" [ label = \"end\" ];\r\n    \"start\" -> \"end\" [ label = \"middle\" ];\r\n    \"start\" -> \"middle\" [ label = \"start\" ];\r\n\r\n    \"end\";\r\n    \"finish\";\r\n    \"middle\";\r\n    \"start\";\r\n}\r\n<\/code><\/pre>\n
\u53ef\u8996\u5316\u306e\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u306b\u5bfe\u5fdc\u3057\u305f\u3001\u30c6\u30ad\u30b9\u30c8\u3092\u751f\u6210\u3057\u3066\u304f\u308c\u307e\u3059\u3002
\n\u4eca\u56de\u306e\u5834\u5408\u306f graphviz\u3092\u6307\u5b9a\u3057\u305f\u306e\u3067\u3001
\nhttp:\/\/www.webgraphviz.com\/<\/p>\n
\u4e0a\u8a18\u3067\u751f\u6210\u3055\u308c\u305f\u30c6\u30ad\u30b9\u30c8\u3092\u8cbc\u308a\u4ed8\u3051\u3066\u3001generate\u3059\u308b\u3068\u53ef\u8996\u5316\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u4eca\u56de\u3060\u3068\u3053\u3093\u306a\u611f\u3058<\/p>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
Event\u306f\u77e2\u5370\u306e\u9077\u79fb\u306e\u90e8\u5206\u3092\u6307\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u6700\u5f8c\u306b<\/h2>\n
\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u3067\u5229\u7528\u3059\u308b\u969b\u306f\u3001\u521d\u671f\u4f4d\u7f6e\u3092\u5909\u3048\u305fstate machine\u3092\u6bce\u56de\u751f\u6210\u3057\u3066\u3001Event\u3092\u547c\u3073\u51fa\u305b\u3070\u3044\u3051\u305d\u3046\u306a\u306e\u3067\u306f\uff1f\u3068\u96d1\u306b\u8003\u3048\u3066\u307e\u3057\u305f\u3002<\/p>\n
\u305d\u308c\u3067\u306f\u826f\u3044state machine \u30e9\u30a4\u30d5\u3092\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4ed5\u4e8b\u3067\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u3092\u4f5c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u30bb\u30ea\u30d5\u7ba1\u7406\u306bstate machine\u304c\u4f7f\u3048\u308b\u304b\u3082\u3068\u3044\u3046\u3053\u3068\u3067\u3001gol […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-44779","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/44779-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"\u4ed5\u4e8b\u3067\u30c1\u30e3\u30c3\u30c8\u30dc\u30c3\u30c8\u3092\u4f5c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u3001\u30bb\u30ea\u30d5\u7ba1\u7406\u306bstate machine\u304c\u4f7f\u3048\u308b\u304b\u3082\u3068\u3044\u3046\u3053\u3068\u3067\u3001gol […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/44779-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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