{"id":41474,"date":"2024-01-10T18:19:05","date_gmt":"2023-02-23T04:00:25","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-stepzen-%e5%b0%86-postgresql-%e6%95%b0%e6%8d%ae%e9%83%a8%e7%bd%b2%e4%b8%ba-graphql-api%e3%80%82\/"},"modified":"2024-05-04T17:44:26","modified_gmt":"2024-05-04T09:44:26","slug":"%e4%bd%bf%e7%94%a8-stepzen-%e5%b0%86-postgresql-%e6%95%b0%e6%8d%ae%e9%83%a8%e7%bd%b2%e4%b8%ba-graphql-api%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8-stepzen-%e5%b0%86-postgresql-%e6%95%b0%e6%8d%ae%e9%83%a8%e7%bd%b2%e4%b8%ba-graphql-api%e3%80%82\/","title":{"rendered":"\u4f7f\u7528 StepZen \u5c06 PostgreSQL \u6570\u636e\u90e8\u7f72\u4e3a GraphQL API"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u672c\u6587\u4ecb\u7ecd\u4e86\u4f7f\u7528StepZen\u5c06PostgreSQL\u6570\u636e\u8f6c\u6362\u4e3aGraphQL API\u7684\u65b9\u6cd5\u3002
\nStepZen\u662f\u4e00\u4e2a\u53ef\u4ee5\u8f7b\u677e\u96c6\u6210\u548c\u7edf\u4e00GraphQL\u548cREST API\u7684GraphQL API\u6784\u5efa\u670d\u52a1\uff0c\u5b83\u80fd\u591f\u5c06\u591a\u4e2a\u6570\u636e\u6e90\u6574\u5408\u4e3a\u4e00\u4e2a\u7aef\u70b9\u3002\u901a\u8fc7\u521b\u5efaGraphQL\u6a21\u5f0f\u548c\u6570\u636e\u7684\u96c6\u6210\u975e\u5e38\u5bb9\u6613\uff0c\u8fd9\u4f7f\u5f97\u524d\u7aef\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5728\u4e0d\u7528\u5173\u6ce8\u540e\u7aef\u7ec6\u8282\u7684\u60c5\u51b5\u4e0b\u8bbf\u95ee\u6240\u9700\u7684\u6570\u636e\u3002<\/p>\n

\u6211\u662f\u53c2\u8003StepZen\u7684\u5b98\u65b9\u6587\u6863\uff08\u4f7f\u7528@dbquery\u81ea\u5b9a\u4e49\u6307\u4ee4\u5f00\u59cb\u4f7f\u7528PostgreSQL\u6570\u636e\u5e93\uff09\u6765\u8fdb\u884c\u9a8c\u8bc1\u7684\uff0c\u4f7f\u7528\u4e86\u6a21\u62df\u7684\u53ea\u8bfb\u6570\u636e\u5e93\u3002\u6211\u60f3\u6574\u7406\u4e00\u4e0b\u5728\u5b9e\u9645\u5c1d\u8bd5\u4e2d\u53d1\u73b0\u7684\u95ee\u9898\u548c\u611f\u53d7\u3002<\/p>\n

\u5e0c\u671b\u7684\u8bfb\u8005<\/h1>\n

\u5047\u8bbe\u60a8\u719f\u6089GraphQL\u7684\u6307\u4ee4\u3002<\/p>\n

\u6307\u4ee4 – Apollo GraphQL \u6587\u6863 \u53c2\u8003<\/p>\n

\u6570\u636e\u5e93\u7684\u6784\u5efa<\/h1>\n

\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8fde\u63a5\u4fe1\u606f\u8fde\u63a5\u5230\u672c\u6587\u4e2d\u4f7f\u7528\u7684\u6570\u636e\u5e93\u3002<\/p>\n

host: postgresql.introspection.stepzen.net\r\ndatabase name: introspection\r\nusername: testUserIntrospection\r\npassword: HurricaneStartingSample1934\r\n<\/code><\/pre>\n
\u800c\u4e14\uff0c\u6240\u4f7f\u7528\u7684\u6570\u636e\u5e93\u7531\u516d\u4e2a\u8868\u7ec4\u6210\uff0c\u5305\u62ec\u987e\u5ba2\uff08customer\uff09\u3001\u4f4f\u5740\uff08address\uff09\u3001\u8ba2\u5355\uff08order\uff09\u3001\u5546\u54c1\uff08products\uff09\u3001\u7ba1\u7406\u987e\u5ba2\u548c\u4f4f\u5740\u4e4b\u95f4\u5173\u7cfb\u7684\u4e2d\u95f4\u8868\uff08customeraddress\uff09\u3001\u7ba1\u7406\u8ba2\u5355\u548c\u5546\u54c1\u4e4b\u95f4\u5173\u7cfb\u7684\u4e2d\u95f4\u8868\uff08lineitem\uff09\u3002\u6bcf\u4e2a\u8868\u4e4b\u95f4\u7684\u5173\u7cfb\u5982\u4e0b\u6240\u793a\u3002<\/p>\n
\u987e\u5ba2\u548c\u5730\u5740\u4e4b\u95f4\u662f\u591a\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u901a\u8fc7\u4e2d\u95f4\u8868\u683c\uff08customeraddress\uff09\u8fdb\u884c\u8fde\u63a5\u3002
\n\u987e\u5ba2\u548c\u8ba2\u5355\u4e4b\u95f4\u662f\u4e00\u5bf9\u591a\u7684\u5173\u7cfb\u3002
\n\u8ba2\u5355\u548c\u5546\u54c1\u4e4b\u95f4\u662f\u591a\u5bf9\u591a\u7684\u5173\u7cfb\uff0c\u901a\u8fc7\u4e2d\u95f4\u8868\u683c\uff08lineitem\uff09\u8fdb\u884c\u8fde\u63a5\u3002<\/p>\n
\u5728\u4e0b\u56fe\u4e2d\uff0c\u5c55\u793a\u4e86\u4e00\u4e2a\u5b9e\u4f53\u5173\u7cfb\u56fe\u3002<\/p>\n
\"Screenshot<\/div>\n
\u5b89\u88c5\u548c\u8bbe\u7f6eStepZen CLI<\/h1>\n
\u6309\u7167 StepZen \u7684\u5b98\u65b9\u6587\u6863\uff08StepZen \u5b89\u88c5\u548c\u8bbe\u7f6e\uff09\uff0c\u9996\u5148\u5b89\u88c5 StepZen CLI\u3002\u5982\u679c\u5df2\u7ecf\u5b89\u88c5\u4e86 Node.js\uff0c\u53ef\u4ee5\u4f7f\u7528 npm install -g stepzen \u8fdb\u884c\u5b89\u88c5\u3002\u63a5\u4e0b\u6765\uff0c\u521b\u5efa StepZen \u8d26\u6237\u5e76\u4ece\u4eea\u8868\u677f\u83b7\u53d6 Admin Key\uff0c\u7136\u540e\u4f7f\u7528 stepzen login \u547d\u4ee4\u8fdb\u884c\u767b\u5f55\u3002<\/p>\n
\u4f7f\u7528StepZen\u521b\u5efaGraphQL API\u3002<\/h1>\n
\u6309\u7167StepZen\u5b98\u65b9\u6587\u6863\uff08\u4f7f\u7528@dbquery\u81ea\u5b9a\u4e49\u6307\u4ee4\u5f00\u59cb\u4f7f\u7528PostgreSQL\u6570\u636e\u5e93\uff09\u7684\u6b65\u9aa4\uff0c\u4f7f\u7528stepzen import postgresql\u547d\u4ee4\u6765\u6839\u636e\u6570\u636e\u5e93\u7684\u6a21\u5f0f\u4fe1\u606f\u751f\u6210GraphQL\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n
\u6211\u5011\u5c07\u4ee5\u5c0d\u8a71\u65b9\u5f0f\u56de\u7b54\u95dc\u65bc\u6578\u64da\u5eab\u9023\u63a5\u4fe1\u606f\u7b49\u7684\u554f\u984c\u3002<\/p>\n
? What would you like your endpoint to be called? api\/opining-condor\r\n? What is your host? postgresql.introspection.stepzen.net\r\n? What is the username? testUserIntrospection\r\n? What is the password? [hidden]\r\n? What is your database name? introspection\r\n? What is your database schema (leave blank to use defaults)? \r\n? Automatically link types based on foreign key relationships using @materializer\r\n (https:\/\/stepzen.com\/docs\/features\/linking-types) Yes\r\nStarting... done\r\n<\/code><\/pre>\n
\u5728\u8fd9\u91cc\uff0c\u6700\u540e\u4e00\u4e2a\u95ee\u9898\u662f\u4ec0\u4e48\uff1f\u901a\u8fc7\u4f7f\u7528@materializer\uff08https:\/\/stepzen.com\/docs\/features\/linking-types\uff09\u6839\u636e\u5916\u952e\u5173\u7cfb\u81ea\u52a8\u94fe\u63a5\u7c7b\u578b\uff0c\u53ef\u4ee5\u5c06\u57fa\u4e8e\u5916\u952e\u7ea6\u675f\u7684\u5173\u7cfb\u6620\u5c04\u5230\u5206\u5c42\u7684GraphQL\u5b9a\u4e49\u4e2d\u3002\u6267\u884c\u4e0a\u8ff0\u547d\u4ee4\u540e\uff0c\u5c06\u4f1a\u751f\u6210\u4ee5\u4e0b\u6587\u4ef6\u3002<\/p>\n
hello-stepzen\r\n\u251c\u2500\u2500 config.yaml\r\n\u251c\u2500\u2500 index.graphql\r\n\u251c\u2500\u2500 postgresql\r\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 index.graphql\r\n\u2514\u2500\u2500 stepzen.config.json\r\n<\/code><\/pre>\n
StepZen\u7684\u914d\u7f6e\u6587\u4ef6\u4e3astepzen.config.json\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u7aef\u70b9\u540d\u79f0\u7b49\u4fe1\u606f\u3002<\/p>\n
{<\/span>\r\n  \"endpoint\"<\/span>:<\/span> \"api\/willing-dingo\"<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4e3a\u4e86\u8fde\u63a5\u5230PostgreSQL\uff0c\u5df2\u751f\u6210\u4e86\u4e00\u4e2aconfig.yaml\u6587\u4ef6\u3002\u6b64\u6587\u4ef6\u5c06\u5728\u7a0d\u540e\u88abpostgresql\/index.graphql\u5f15\u7528\u3002<\/p>\n
configurationset<\/span>:<\/span>\r\n  -<\/span> configuration<\/span>:<\/span>\r\n      name<\/span>:<\/span> postgresql_config<\/span>\r\n      uri<\/span>:<\/span> postgresql:\/\/postgresql.introspection.stepzen.net\/introspection?user=testUserIntrospection&password=HurricaneStartingSample1934<\/span>\r\n<\/code><\/pre>\n
\u5728\u9876\u5c42\u7684GraphQL\u6a21\u5f0f\u4e2d\uff0c\u751f\u6210\u4e86index.graphql\u6587\u4ef6\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528@sdl\u6307\u4ee4\u6765\u6307\u5b9a\u5176\u4ed6\u6a21\u5f0f\u6587\u4ef6\u3002\u5173\u4e8eStepZen\u63d0\u4f9b\u7684\u6307\u4ee4\uff0c\u53ef\u4ee5\u5728\u5b98\u65b9\u6587\u6863\uff08GraphQL\u6307\u4ee4\u53c2\u8003@rest @dbquery @graphql @materializer\uff09\u4e2d\u627e\u5230\u8bf4\u660e\u3002<\/p>\n
schema<\/span> @<\/span>sdl<\/span>(<\/span>files<\/span>:<\/span> [<\/span>\"<\/span>postgresql<\/span>\/<\/span>index<\/span>.<\/span>graphql<\/span>\"<\/span>])<\/span> {<\/span>\r\n  query<\/span>:<\/span> Query<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528StepZen\u521b\u5efa\u7684GraphQL API\u4f1a\u751f\u6210\u4ee5\u4e0b\u7c7b\u578b\u7684\u67e5\u8be2\u548c\u53d8\u66f4\u64cd\u4f5c\uff0c\u4e0ePostgreSQL\u8868\u5bf9\u5e94\u7684GraphQL schema\u73b0\u5728\u5df2\u7ecf\u751f\u6210\u4e86\uff0c\u4f4d\u4e8e`postgresql\/index.graphql`\u3002\u8be5\u6587\u4ef6\u4e2d\u4f7f\u7528\u4e86`@materializer`\u548c`@dbquery`\u7b49\u6307\u4ee4\u3002<\/p>\n
    \n
  • \n
      Query<\/ul>\n<\/li>\n<\/ul>\n
      id \u306b\u3088\u308b\u500b\u5225\u306e\u53d6\u5f97
      \nList \u5168\u4f53\u306e\u53d6\u5f97
      \nPaginatedList \u7bc4\u56f2\u6307\u5b9a\u306b\u3088\u308b\u53d6\u5f97
      \nViaXXX \u591a\u5bfe\u591a\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0
      \nUsingXXXfkey \u5916\u90e8\u30ad\u30fc\u306b\u3088\u308b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0
      \nUsingXXXidx \u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u4ed8\u304d\u30ab\u30e9\u30e0\u306b\u3088\u308b\u30d5\u30a3\u30eb\u30bf\u30ea\u30f3\u30b0<\/p>\n
      Mutation<\/p>\n
      insert
      \ndelete
      \nupdate<\/p>\n
      \u7136\u800c\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4e0d\u4f1a\u751f\u6210\u7528\u4e8e\u5bf9\u591a\u5bf9\u591a\u5173\u7cfb\u8868\uff08\u4f8b\u5982customeraddress\u6216lineitem\uff09\u8fdb\u884cCRUD\u64cd\u4f5c\u7684\u7aef\u70b9\u3002<\/p>\n
      postgresql\/index.graphql\uff08\u5185\u5bb9\u592a\u957f\uff0c\u5df2\u6298\u53e0\uff09postgresql\/index.graphql
      \n\u5730\u5740\u7c7b\u578b\uff08Address\uff09:
      \n– \u57ce\u5e02(citi)\uff1a\u5b57\u7b26\u4e32(String)
      \n– \u56fd\u5bb6\u5730\u533a(countryregion)\uff1a\u5b57\u7b26\u4e32(String)
      \n– \u5ba2\u6237(customer)\uff1a[\u987e\u5ba2(Customer)] @materializer(query: “customerViaCustomeraddress”)
      \n– ID(id)\uff1a\u6574\u6570(Int)\uff0c\u5fc5\u9009(!)
      \n– \u90ae\u7f16(postalcode)\uff1a\u5b57\u7b26\u4e32(String)
      \n– \u5dde\/\u7701(stateprovince)\uff1a\u5b57\u7b26\u4e32(String)
      \n– \u8857\u9053(street)\uff1a\u5b57\u7b26\u4e32(String)<\/p>\n
      \u987e\u5ba2\u7c7b\u578b\uff08Customer\uff09:
      \n– \u5730\u5740(address)\uff1a[\u5730\u5740(Address)] @materializer(query: “addressViaCustomeraddress”)
      \n– \u7535\u5b50\u90ae\u4ef6(email)\uff1a\u5b57\u7b26\u4e32(String)\uff0c\u5fc5\u9009(!)
      \n– ID(id)\uff1a\u6574\u6570(Int)\uff0c\u5fc5\u9009(!)
      \n– \u59d3\u540d(name)\uff1a\u5b57\u7b26\u4e32(String)\uff0c\u5fc5\u9009(!)
      \n– \u8ba2\u5355(order)\uff1a[\u8ba2\u5355(Order)] @materializer(query: “orderUsingOrder_customerid_fkey”)<\/p>\n
      \u8ba2\u5355\u9879\u7c7b\u578b\uff08Lineitem\uff09:
      \n– \u8ba2\u5355(order)\uff1a\u8ba2\u5355(Order) @materializer(query: “orderUsingLineitem_orderid_fkey”)
      \n– \u8ba2\u5355ID(orderid)\uff1a\u6574\u6570(Int)\uff0c\u5fc5\u9009(!)
      \n– \u5546\u54c1(product)\uff1a\u5546\u54c1(Product) @materializer(query: “productUsingLineitem_productid_fkey”)
      \n– \u5546\u54c1ID(productid)\uff1a\u6574\u6570(Int)\uff0c\u5fc5\u9009(!)
      \n– \u6570\u91cf(quantity)\uff1a\u6574\u6570(Int)<\/p>\n
      \u8ba2\u5355\u7c7b\u578b\uff08Order\uff09:
      \n– \u5feb\u9012\u627f\u8fd0\u4eba(carrier)\uff1a\u5b57\u7b26\u4e32(String)
      \n– \u521b\u5efa\u65e5\u671f(createdat)\uff1a\u65e5\u671f(Date)\uff0c\u5fc5\u9009(!)
      \n– \u987e\u5ba2(customer)\uff1a\u987e\u5ba2(Customer) @materializer(query: “customerUsingOrder_customerid_fkey”)
      \n– \u987e\u5ba2ID(customerid)\uff1a\u6574\u6570(Int)\uff0c\u5fc5\u9009(!)
      \n– ID(id)\uff1a\u6574\u6570(Int)\uff0c\u5fc5\u9009(!)
      \n– \u8ba2\u5355\u9879(lineitem)\uff1a\u8ba2\u5355\u9879(Lineitem) @materializer(query: “lineitemUsingLineitem_orderid_fkey”)
      \n– \u8fd0\u8d39(shippingcost)\uff1a\u6d6e\u70b9\u6570(Float)
      \n– \u8ddf\u8e2aID(trackingid)\uff1a\u5b57\u7b26\u4e32(String)<\/p>\n
      \u5546\u54c1\u7c7b\u578b\uff08Product\uff09:
      \n– \u63cf\u8ff0(description)\uff1a\u5b57\u7b26\u4e32(String)
      \n– ID(id)\uff1a\u6574\u6570(Int)\uff0c\u5fc5\u9009(!)
      \n– \u56fe\u7247(image)\uff1a\u5b57\u7b26\u4e32(String)
      \n– \u8ba2\u5355\u9879(lineitem)\uff1a\u8ba2\u5355\u9879(Lineitem) @materializer(query: “lineitem”)
      \n– \u6807\u9898(title)\uff1a\u5b57\u7b26\u4e32(String)<\/p>\n
      “””
      \n\u4ee5\u4e0b\u67e5\u8be2\u53ea\u662f\u4e00\u7ec4\u8bbf\u95ee\u6a21\u5f0f\u7684\u793a\u4f8b\u3002
      \n\u8bf7\u968f\u610f\u4fee\u6539\u6216\u6dfb\u52a0\u66f4\u591a\u3002
      \n“””
      \n\u67e5\u8be2\u7c7b\u578b(Query):
      \n“\u67e5\u8be2\u5730\u5740\u7c7b\u578b”
      \ngetAddress(id: Int!): \u5730\u5740(Address)
      \n@dbquery(
      \ntype: “postgresql”
      \nschema: “public”
      \ntable: “address”
      \nconfiguration: “postgresql_config”
      \n)
      \ngetAddressList: [\u5730\u5740(Address)]
      \n@dbquery(
      \ntype: “postgresql”
      \nschema: “public”
      \ntable: “address”
      \nconfiguration: “postgresql_config”
      \n)
      \ngetAddressPaginatedList(first: Int, after: Int): [\u5730\u5740(Address)]
      \n@dbquery(
      \ntype: “postgresql”
      \nschema: “public”
      \nquery: “””
      \nSELECT “city”, “countryregion”, “id”, “postalcode”, “stateprovince”, “street” FROM “address” ORDER BY “id” LIMIT $1 OFFSET $2
      \n“””
      \nconfiguration: “postgresql_config”
      \n)
      \ngetCustomersViaCustomerAddress(id: Int!): [\u987e\u5ba2(Customer)]
      \n@dbquery(
      \ntype: “postgresql”
      \nschema: “public”
      \nquery: “””
      \nSELECT T.”email”, T.”id”, T.”name”
      \nFROM “customer” T, “customeraddress” V
      \nWHERE
      \nV.”addressid” = $1 AND
      \nV.”customerid” = T.”id”
      \n“””
      \nconfiguration: “postgresql_config”
      \n)<\/p>\n<\/details>\n
      \u81ea\u5b9a\u4e49API\u65f6\u7684\u8981\u70b9<\/h1>\n
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