{"id":207607,"date":"2025-07-08T10:40:16","date_gmt":"2025-07-08T02:40:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207607\/"},"modified":"2025-07-08T10:40:16","modified_gmt":"2025-07-08T02:40:16","slug":"%e6%97%a0%e6%b3%95%e5%b0%86-txdb-%e4%b8%8e-gormigrate-%e4%b8%80%e8%b5%b7%e4%bd%bf%e7%94%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207607\/","title":{"rendered":"\u65e0\u6cd5\u5c06 txdb \u4e0e Gormigrate \u4e00\u8d77\u4f7f\u7528"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u65e0\u6cd5\u5c06 txdb \u4e0e Gormigrate \u4e00\u8d77\u4f7f\u7528<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-23 22:09:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u79ef\u7d2f\u77e5\u8bc6\uff0c\u80dc\u8fc7\u79ef\u84c4\u91d1\u94f6\uff01\u6bd5\u7adf\u5728Golang\u5f00\u53d1\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u9047\u5230\u5404\u79cd\u5404\u6837\u7684\u95ee\u9898\uff0c\u5f80\u5f80\u90fd\u662f\u4e00\u4e9b\u7ec6\u8282\u77e5\u8bc6\u70b9\u8fd8\u6ca1\u6709\u638c\u63e1\u597d\u800c\u5bfc\u81f4\u7684\uff0c\u56e0\u6b64\u57fa\u7840\u77e5\u8bc6\u70b9\u7684\u79ef\u7d2f\u662f\u5f88\u91cd\u8981\u7684\u3002\u4e0b\u9762\u672c\u6587\u300a\u65e0\u6cd5\u5c06 txdb \u4e0e Gormigrate \u4e00\u8d77\u4f7f\u7528\u300b\uff0c\u5c31\u5e26\u5927\u5bb6\u8bb2\u89e3\u4e00\u4e0b\u77e5\u8bc6\u70b9\uff0c\u82e5\u662f\u4f60\u5bf9\u672c\u6587\u611f\u5174\u8da3\uff0c\u6216\u8005\u662f\u60f3\u641e\u61c2\u5176\u4e2d\u67d0\u4e2a\u77e5\u8bc6\u70b9\uff0c\u5c31\u8bf7\u4f60\u7ee7\u7eed\u5f80\u4e0b\u770b\u5427~<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6b63\u5728\u5c1d\u8bd5\u4f7f\u7528 txdb \u5728\u9694\u79bb\u4e8b\u52a1\u5185\u8fc1\u79fb\u6570\u636e\u5e93\uff0c\u4ee5\u4fbf\u6d4b\u8bd5\u4e0e\u6570\u636e\u5e93\u4ea4\u4e92\u7684\u4ee3\u7801\u4ee5\u53ca\u6d4b\u8bd5\u8fc1\u79fb\u672c\u8eab\u3002\u4f46\u6bcf\u6b21\u6211\u8fd0\u884c\u4ee3\u7801\u65f6\u90fd\u4f1a\u8fd4\u56de\u9519\u8bef\uff0c\u5e76\u4e14 gorm \u4f1a\u53d1\u51fa\u4e00\u4e9b\u8b66\u544a\uff1a<\/p>\n

$ database_url=\"postgres:\/\/postgres@localhost:5432\/postgres?sslmode=disable\" .\/txdb_ejemplo\n`txdb_postgres` is not officially supported, running under compatibility mode.\n\n(\/home\/jorge\/go\/pkg\/mod\/gopkg.in\/[email protected]\/gormigrate.go:381)\n[2019-08-12 19:46:28]  pq: current transaction is aborted, commands ignored until end of transaction block\npanic: migration failed: pq: current transaction is aborted, commands ignored until end of transaction block\n\ngoroutine 1 [running]:\nmain.main()\n        \/home\/jorge\/proyectos\/kue\/fero\/txdb_ejemplo\/main.go:76 +0x3a1<\/pre>\n
\u8fd9\u662f\u8fd0\u884c\u63d0\u4f9b\u6570\u636e\u5e93\u7684 docker \u670d\u52a1\u7684\u8f93\u51fa\uff1a<\/p>\n
db_1  | 2019-08-13 01:46:08.788 utc [1] log:  database system is ready to accept connections\ndb_1  | 2019-08-13 01:46:28.564 utc [48] error:  function database() does not exist at character 8\ndb_1  | 2019-08-13 01:46:28.564 utc [48] hint:  no function matches the given name and argument types. you might need to add explicit type casts.\ndb_1  | 2019-08-13 01:46:28.564 utc [48] statement:  select database()\ndb_1  | 2019-08-13 01:46:28.564 utc [48] error:  syntax error at or near \"and\" at character 71\ndb_1  | 2019-08-13 01:46:28.564 utc [48] statement:  select count(*) from information_schema.tables where table_schema = ? and table_name = ?\ndb_1  | 2019-08-13 01:46:28.564 utc [48] error:  current transaction is aborted, commands ignored until end of transaction block\ndb_1  | 2019-08-13 01:46:28.564 utc [48] statement:  create table migrations (id varchar(255) primary key)<\/pre>\n
\u6211\u4e0d\u660e\u767d\u6211\u505a\u9519\u4e86\u4ec0\u4e48\uff0c\u4f46\u6211\u63d0\u4f9b\u4e86\u4e00\u4e2a\u6700\u5c0f\u7684\u529f\u80fd\u793a\u4f8b\u6765\u91cd\u73b0\u6211\u9047\u5230\u7684\u95ee\u9898\uff0c\u8fd9\u91cc\u662f\u5305\u542b\u4ee3\u7801\u7684\u5b58\u50a8\u5e93\uff0c\u5e76\u4e14\u6709 go \u4ee3\u7801\u7684\u5165\u95e8\uff1a p> <\/p>\n
package main\n\nimport (\n    \"fmt\"\n    \"os\"\n    \"time\"\n\n    \"github.com\/DATA-DOG\/go-txdb\"\n    \"github.com\/jinzhu\/gorm\"\n    _ \"github.com\/lib\/pq\"\n    gormigrate \"gopkg.in\/gormigrate.v1\"\n)\n\nvar (\n    migration_1 = func(tx *gorm.DB) error {\n        type Person struct {\n            gorm.Model\n            Name string\n        }\n\n        return tx.CreateTable(&Person{}).Error\n    }\n    migration_2 = func(tx *gorm.DB) error {\n        type Person struct {\n            Age int\n        }\n        return tx.AutoMigrate(&Person{}).Error\n    }\n    return_nil = func(tx *gorm.DB) error {\n        return nil\n    }\n)\n\ntype Person struct {\n    gorm.Model\n    Name string\n    Age  int\n}\n\nfunc MigrateAll(gdb *gorm.DB) error {\n    m := gormigrate.New(gdb, gormigrate.DefaultOptions, []*gormigrate.Migration{\n        {\n            ID:       \"first\",\n            Migrate:  migration_1,\n            Rollback: return_nil,\n        },\n        {\n            ID:       \"second\",\n            Migrate:  migration_2,\n            Rollback: return_nil,\n        },\n    })\n    return m.Migrate()\n}\n\nfunc main() {\n    url := os.Getenv(\"DATABASE_URL\")\n    txdb.Register(\"txdb_postgres\", \"postgres\", url)\n    var db *gorm.DB\n    var err error\n    for i := 0; i < 3; i++ {\n        db, err = gorm.Open(\"txdb_postgres\", \"tx_1\")\n        if err == nil {\n            break\n        }\n        fmt.Printf(\"connection failed, retrying in 10 seconds. Reason: %s\\n\", err)\n        time.Sleep(10 * time.Second)\n    }\n    if err != nil {\n        panic(fmt.Sprintf(\"connection failed: %s\", err))\n    }\n\n    defer db.Close()\n    err = MigrateAll(db)\n    if err != nil {\n        panic(fmt.Sprintf(\"migration failed: %s\", err))\n    }\n}<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u95ee\u9898\u5728\u4e8e gorm<\/code> \u4f7f\u7528\u7b2c\u4e00\u4e2a gorm.open<\/code> \u53c2\u6570\u4f5c\u4e3a\u65b9\u8a00\u540d\u79f0\uff08\u5b83\u6709\u4e00\u7ec4\u9884\u5b9a\u4e49\u7684\u65b9\u8a00\uff09\uff0c\u800c\u4e0d\u662f\u4f5c\u4e3a database\/sql<\/code> \u9a71\u52a8\u7a0b\u5e8f\u540d\u79f0\u3002<\/p>\n
\u56e0\u6b64\uff0c\u60a8\u9700\u8981\u4f7f\u7528 gorm<\/code> \u5df2\u77e5\u65b9\u8a00\u540d\u79f0\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\uff0c\u5728\u672c\u4f8b\u4e2d\uff0c\u60a8\u9700\u8981 \"postgres\"<\/code>\uff0c\u56e0\u4e3a\u60a8\u5c06\u4f7f\u7528 postgresql \u4f5c\u4e3a\u5e95\u5c42\u6570\u636e\u5e93\uff0c\u56e0\u6b64\u60a8\u9700\u8981 gorm<\/code> \u4f7f\u7528\u76f8\u5e94\u7684 sql \u65b9\u8a00\u3002 p> <\/p>\n
\u7136\u540e\u544a\u8bc9 gorm<\/code> \u4f7f\u7528 \"txdb\"<\/code> \u9a71\u52a8\u7a0b\u5e8f\u548c \"tx_1\"<\/code> \u4f5c\u4e3a\u8fde\u63a5 url\u3002<\/p>\n
\u8fd9\u4f3c\u4e4e\u6709\u6548\uff1a<\/p>\n
package main\n\nimport (\n    \"fmt\"\n    \"os\"\n    \"time\"\n\n    \"github.com\/data-dog\/go-txdb\"\n    \"github.com\/jinzhu\/gorm\"\n    _ \"github.com\/lib\/pq\"\n    gormigrate \"gopkg.in\/gormigrate.v1\"\n)\n\nvar (\n    migration_1 = func(tx *gorm.db) error {\n        type person struct {\n            gorm.model\n            name string\n        }\n\n        return tx.createtable(&person{}).error\n    }\n    migration_2 = func(tx *gorm.db) error {\n        type person struct {\n            age int\n        }\n        return tx.automigrate(&person{}).error\n    }\n    return_nil = func(tx *gorm.db) error {\n        return nil\n    }\n)\n\ntype person struct {\n    gorm.model\n    name string\n    age  int\n}\n\nfunc migrateall(gdb *gorm.db) error {\n    m := gormigrate.new(gdb, gormigrate.defaultoptions, []*gormigrate.migration{\n        {\n            id:       \"first\",\n            migrate:  migration_1,\n            rollback: return_nil,\n        },\n        {\n            id:       \"second\",\n            migrate:  migration_2,\n            rollback: return_nil,\n        },\n    })\n    return m.migrate()\n}\n\nfunc main() {\n    url := os.getenv(\"database_url\")\n    txdb.register(\"txdb\", \"postgres\", url)\n    var db *gorm.db\n    var err error\n    for i := 0; i < 3; i++ {\n        db, err = gorm.open(\"postgres\", \"txdb\", \"tx_1\")\n        if err == nil {\n            break\n        }\n        fmt.printf(\"connection failed, retrying in 10 seconds. reason: %s\\n\", err)\n        time.sleep(10 * time.second)\n    }\n    if err != nil {\n        panic(fmt.sprintf(\"connection failed: %s\", err))\n    }\n\n    defer db.close()\n    err = migrateall(db)\n    if err != nil {\n        panic(fmt.sprintf(\"migration failed: %s\", err))\n    }\n}<\/pre>\n
\u6216\u8005\uff0c\u60a8\u53ef\u4ee5\u76f4\u63a5\u4f20\u9012 gorm.open<\/code> *sql.db<\/code>\uff0c\u76f8\u5173\u90e8\u5206\u5982\u4e0b\uff1a<\/p>\n
s, err := sql.Open(\"txdb\", \"tx_1\")\n        \/\/ handle err\n        db, err := gorm.Open(\"postgres\", s)\n        \/\/ handle err<\/pre>\n
\u90a3\u4e5f\u884c\u3002<\/p>\n
\u4eca\u5929\u5173\u4e8e\u300a\u65e0\u6cd5\u5c06 txdb \u4e0e Gormigrate \u4e00\u8d77\u4f7f\u7528\u300b\u7684\u5185\u5bb9\u4ecb\u7ecd\u5c31\u5230\u6b64\u7ed3\u675f\uff0c\u5982\u679c\u6709\u4ec0\u4e48\u7591\u95ee\u6216\u8005\u5efa\u8bae\uff0c\u53ef\u4ee5\u5728\u516c\u4f17\u53f7\u4e0b\u591a\u591a\u56de\u590d\u4ea4\u6d41\uff1b\u6587\u4e2d\u82e5\u6709\u4e0d\u6b63\u4e4b\u5904\uff0c\u4e5f\u5e0c\u671b\u56de\u590d\u7559\u8a00\u4ee5\u544a\u77e5\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207607","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207607","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=207607"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207607\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}