{"id":48260,"date":"2023-02-23T08:59:22","date_gmt":"2023-04-16T13:38:51","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/aws-cdk-%e6%96%b0%e5%a2%9e%e4%ba%86-appsync-%e7%9a%84%e9%ab%98%e7%ba%a7%e6%9e%84%e5%bb%ba%e3%80%82\/"},"modified":"2024-04-29T15:53:59","modified_gmt":"2024-04-29T07:53:59","slug":"aws-cdk-%e6%96%b0%e5%a2%9e%e4%ba%86-appsync-%e7%9a%84%e9%ab%98%e7%ba%a7%e6%9e%84%e5%bb%ba%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/aws-cdk-%e6%96%b0%e5%a2%9e%e4%ba%86-appsync-%e7%9a%84%e9%ab%98%e7%ba%a7%e6%9e%84%e5%bb%ba%e3%80%82\/","title":{"rendered":"AWS CDK \u65b0\u589e\u4e86 AppSync \u7684\u9ad8\u7ea7\u6784\u5efa"},"content":{"rendered":"

\u9996\u5148<\/h2>\n

\u56e0\u4e3a AWSCDK 1.19.0 \u4e2d\u7684 AppSync \u9ad8\u7ea7\u7ed3\u6784\u5df2\u7ecf\u63a8\u51fa\uff0c\u8ba9\u6211\u611f\u5230\u975e\u5e38\u5f00\u5fc3\uff0c\u6240\u4ee5\u6211\u5199\u4e0b\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff01<\/p>\n

AWSCDK\u662f\u4ec0\u4e48<\/h2>\n

CloudFormation\uff08\u4ee5\u4e0bCFn\uff09\u662f\u4e00\u4e2a\u53ef\u4ee5\u4f7f\u7528TypeScript\u6216Python\u7b49\u7f16\u7a0b\u8bed\u8a00\u6765\u7f16\u5199\u6a21\u677f\u7684\u6846\u67b6\u3002 \u8bf7\u67e5\u770b\u5b98\u65b9\u7f51\u7ad9\u4ee5\u83b7\u53d6\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n

AWS AppSync\u662f\u4ec0\u4e48\uff1f<\/h2>\n

\u5982\u679c\u5728AWS\u4e0a\u4f7f\u7528GraphQL\uff0c\u53ef\u4ee5\u9009\u62e9AppSync\u8fd9\u4e2a\u670d\u52a1\u3002\u60a8\u53ef\u4ee5\u6307\u5b9aDynamoDB\u6216Lambda\u4f5c\u4e3aGraphQL\u7684DataSource\uff0c\u5e76\u901a\u8fc7GraphQL\u7684API\u8fdb\u884c\u64cd\u4f5c\u3002\u8bf7\u67e5\u770b\u5b98\u65b9\u7f51\u7ad9\u4ee5\u4e86\u89e3\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n

\u6211\u5011\u958b\u59cb\u5beb\u5427\uff01<\/h2>\n

\u4ee5\u524d\uff0c\u4f7f\u7528AWSCDK\u7f16\u5199AppSync\u65f6\uff0c\u5fc5\u987b\u4f7f\u7528\u7c7b\u4f3c\u4e8eCfnxxxx\u7684\u4f4e\u7ea7\u6784\u9020\u624d\u80fd\u5b8c\u6210\u3002
\n\u56e0\u6b64\uff0c\u9700\u8981\u624b\u52a8\u6307\u5b9a\u6240\u6709\u5fc5\u8981\u7684\u5c5e\u6027\uff0c\u8fd9\u975e\u5e38\u9ebb\u70e6…
\n\u5728\u6700\u65b0\u66f4\u65b0\u4e2d\uff0c\u5f15\u5165\u4e86\u9ad8\u7ea7\u6784\u9020\uff0c\u73b0\u5728\u6211\u5c06\u4ecb\u7ecd\u5176\u6539\u53d8\u4e86\u4ec0\u4e48\u5199\u6cd5\u3002<\/p>\n

GraphQL\u7684\u67b6\u6784\u6587\u4ef6\uff0c\u662f\u4e00\u4e2aGraphQL\u6587\u4ef6\u3002<\/p>\n

type<\/span> Post<\/span> {<\/span>\r\n  id<\/span>:<\/span> String<\/span>,<\/span>\r\n  title<\/span>:<\/span> String<\/span>,<\/span>\r\n  create_time<\/span>:<\/span> String<\/span>\r\n}<\/span>\r\ninput<\/span> InputPost<\/span> {<\/span>\r\n  id<\/span>:<\/span> String<\/span>\r\n  title<\/span>:<\/span> String<\/span>,<\/span>\r\n  create_time<\/span>:<\/span> String<\/span>\r\n}<\/span>\r\ntype<\/span> Query<\/span> {<\/span>\r\n  all<\/span>:<\/span> [<\/span>Post<\/span>]<\/span>\r\n  query<\/span>(<\/span>id<\/span>:<\/span> String<\/span>!,<\/span> start<\/span>:<\/span> String<\/span>!,<\/span> end<\/span>:<\/span> String<\/span>!):<\/span> [<\/span>Post<\/span>]<\/span>\r\n}<\/span>\r\ntype<\/span> Mutation<\/span> {<\/span>\r\n  save<\/span>(<\/span>input<\/span>:<\/span> InputPost<\/span>!):<\/span> Post<\/span>\r\n  delete<\/span>(<\/span>id<\/span>:<\/span> ID<\/span>!):<\/span> Post<\/span>\r\n}<\/span>\r\ntype<\/span> Schema<\/span> {<\/span>\r\n  query<\/span>:<\/span> Query<\/span>\r\n  mutation<\/span>:<\/span> Mutation<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6e90\u4ee3\u7801\u4ee5\u5806\u6808\u5f62\u5f0f\u5c55\u793a<\/p>\n
import<\/span> cdk<\/span> =<\/span> require<\/span>(<\/span>\"<\/span>@aws-cdk\/core<\/span>\"<\/span>)<\/span>\r\nimport<\/span> {<\/span> join<\/span> }<\/span> from<\/span> \"<\/span>path<\/span>\"<\/span>\r\n\r\nimport<\/span> {<\/span> UserPool<\/span>,<\/span> SignInType<\/span> }<\/span> from<\/span> \"<\/span>@aws-cdk\/aws-cognito<\/span>\"<\/span>\r\nimport<\/span> {<\/span>\r\n  GraphQLApi<\/span>,<\/span>\r\n  FieldLogLevel<\/span>,<\/span>\r\n  UserPoolDefaultAction<\/span>,<\/span>\r\n  MappingTemplate<\/span>\r\n}<\/span> from<\/span> \"<\/span>@aws-cdk\/aws-appsync<\/span>\"<\/span>\r\nimport<\/span> {<\/span>\r\n  TableProps<\/span>,<\/span>\r\n  AttributeType<\/span>,<\/span>\r\n  BillingMode<\/span>,<\/span>\r\n  Table<\/span>\r\n}<\/span> from<\/span> \"<\/span>@aws-cdk\/aws-dynamodb<\/span>\"<\/span>\r\n\r\nexport<\/span> class<\/span> AppSyncStack<\/span> extends<\/span> cdk<\/span>.<\/span>Stack<\/span> {<\/span>\r\n  constructor<\/span>(<\/span>scope<\/span>:<\/span> cdk<\/span>.<\/span>App<\/span>,<\/span> id<\/span>:<\/span> string<\/span>,<\/span> props<\/span>?:<\/span> cdk<\/span>.<\/span>StackProps<\/span>)<\/span> {<\/span>\r\n    super<\/span>(<\/span>scope<\/span>,<\/span> id<\/span>,<\/span> props<\/span>)<\/span>\r\n\r\n    const<\/span> userPool<\/span> =<\/span> new<\/span> UserPool<\/span>(<\/span>this<\/span>,<\/span> \"<\/span>UserPool<\/span>\"<\/span>,<\/span> {<\/span>\r\n      userPoolName<\/span>:<\/span> \"<\/span>DemoAPIUserPool<\/span>\"<\/span>,<\/span>\r\n      signInType<\/span>:<\/span> SignInType<\/span>.<\/span>USERNAME<\/span>\r\n    })<\/span>\r\n\r\n    const<\/span> table<\/span> =<\/span> new<\/span> Table<\/span>(<\/span>this<\/span>,<\/span> \"<\/span>CDKPostTable<\/span>\"<\/span>,<\/span> {<\/span>\r\n      tableName<\/span>:<\/span> \"<\/span>CDKPostTable<\/span>\"<\/span>,<\/span>\r\n      partitionKey<\/span>:<\/span> {<\/span>\r\n        name<\/span>:<\/span> \"<\/span>id<\/span>\"<\/span>,<\/span>\r\n        type<\/span>:<\/span> AttributeType<\/span>.<\/span>STRING<\/span>\r\n      },<\/span>\r\n      sortKey<\/span>:<\/span> {<\/span>\r\n        name<\/span>:<\/span> \"<\/span>create_time<\/span>\"<\/span>,<\/span>\r\n        type<\/span>:<\/span> AttributeType<\/span>.<\/span>STRING<\/span>\r\n      },<\/span>\r\n      billingMode<\/span>:<\/span> BillingMode<\/span>.<\/span>PROVISIONED<\/span>,<\/span>\r\n      readCapacity<\/span>:<\/span> 1<\/span>,<\/span>\r\n      writeCapacity<\/span>:<\/span> 1<\/span>\r\n    })<\/span>\r\n\r\n    const<\/span> api<\/span> =<\/span> new<\/span> GraphQLApi<\/span>(<\/span>this<\/span>,<\/span> \"<\/span>PostAPI<\/span>\"<\/span>,<\/span> {<\/span>\r\n      name<\/span>:<\/span> \"<\/span>PostAPI<\/span>\"<\/span>,<\/span>\r\n      logConfig<\/span>:<\/span> {<\/span>\r\n        fieldLogLevel<\/span>:<\/span> FieldLogLevel<\/span>.<\/span>ALL<\/span>\r\n      },<\/span>\r\n      userPoolConfig<\/span>:<\/span> {<\/span>\r\n        userPool<\/span>,<\/span>\r\n        defaultAction<\/span>:<\/span> UserPoolDefaultAction<\/span>.<\/span>ALLOW<\/span>\r\n      },<\/span>\r\n      schemaDefinitionFile<\/span>:<\/span> join<\/span>(<\/span>__dirname<\/span>,<\/span> \"<\/span>schema.graphql<\/span>\"<\/span>)<\/span>\r\n    })<\/span>\r\n\r\n    const<\/span> datasource<\/span> =<\/span> api<\/span>.<\/span>addDynamoDbDataSource<\/span>(<\/span>\"<\/span>PostAPIDataSource<\/span>\"<\/span>,<\/span> \"\"<\/span>,<\/span> table<\/span>)<\/span>\r\n\r\n    datasource<\/span>.<\/span>createResolver<\/span>({<\/span>\r\n      typeName<\/span>:<\/span> \"<\/span>Query<\/span>\"<\/span>,<\/span>\r\n      fieldName<\/span>:<\/span> \"<\/span>all<\/span>\"<\/span>,<\/span>\r\n      requestMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbScanTable<\/span>(),<\/span>\r\n      responseMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbResultList<\/span>()<\/span>\r\n    })<\/span>\r\n    datasource<\/span>.<\/span>createResolver<\/span>({<\/span>\r\n      typeName<\/span>:<\/span> \"<\/span>Mutation<\/span>\"<\/span>,<\/span>\r\n      fieldName<\/span>:<\/span> \"<\/span>save<\/span>\"<\/span>,<\/span>\r\n      requestMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbPutItem<\/span>(<\/span>\r\n        PrimaryKey<\/span>.<\/span>partition<\/span>(<\/span>\"<\/span>id<\/span>\"<\/span>).<\/span>is<\/span>(<\/span>\"<\/span>input.id<\/span>\"<\/span>),<\/span>\r\n        Values<\/span>.<\/span>projecting<\/span>(<\/span>\"<\/span>input<\/span>\"<\/span>)<\/span>\r\n      ),<\/span>\r\n      responseMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbResultItem<\/span>()<\/span>\r\n    })<\/span>\r\n    datasource<\/span>.<\/span>createResolver<\/span>({<\/span>\r\n      typeName<\/span>:<\/span> \"<\/span>Mutation<\/span>\"<\/span>,<\/span>\r\n      fieldName<\/span>:<\/span> \"<\/span>delete<\/span>\"<\/span>,<\/span>\r\n      requestMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbDeleteItem<\/span>(<\/span>\"<\/span>id<\/span>\"<\/span>,<\/span> \"<\/span>id<\/span>\"<\/span>),<\/span>\r\n      responseMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbResultItem<\/span>()<\/span>\r\n    })<\/span>\r\n\r\n    const<\/span> queryMappingTemplate<\/span> =<\/span> `\r\n      {\r\n        \"version\": \"2017-02-28\",\r\n        \"operation\": \"Query\",\r\n        \"query\": {\r\n          \"expression\": \"#id = :id AND #createTime BETWEEN :start AND :end\",\r\n          \"expressionNames\": {\r\n            \"#id\": \"id\"\r\n            \"#createTime\": \"create_time\"\r\n          },\r\n          \"expressionValues\": {\r\n            \":id\": $util.dynamodb.toDynamoDBJson($ctx.args.id),\r\n            \":start\": $util.dynamodb.toDynamoDBJson($ctx.args.start),\r\n            \":end\": $util.dynamodb.toDynamoDBJson($ctx.args.end)\r\n          }\r\n        }\r\n      }\r\n    `<\/span>\r\n    datasource<\/span>.<\/span>createResolver<\/span>({<\/span>\r\n      typeName<\/span>:<\/span> \"<\/span>Query<\/span>\"<\/span>,<\/span>\r\n      fieldName<\/span>:<\/span> \"<\/span>query<\/span>\"<\/span>,<\/span>\r\n      requestMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>fromString<\/span>(<\/span>queryMappingTemplate<\/span>),<\/span>\r\n      responseMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbResultList<\/span>()<\/span>\r\n    })<\/span>\r\n  }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u6211\u4f1a\u89e3\u91ca\u4e0b\u53bb<\/h2>\n
\u6211\u5011\u5c07\u89e3\u91cb\u5b58\u5132\u5728\u5806\u758a\u4e2d\u7684 TS \u6a94\u6848\u5167\u5bb9\u3002\u6b64\u6b21\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 GraphQL \u5b9a\u7fa9\u4e86\u4e00\u500b\u4f7f\u7528 AppSync \u4f86\u8b80\u5beb DynamoDB \u8cc7\u6599\u7684\u65b9\u6848\u3002\u540c\u6642\uff0c\u6211\u5011\u4f7f\u7528 Cognito \u9032\u884c\u8eab\u4efd\u9a57\u8b49\u3002<\/p>\n
\u9664\u4e86AppSync\u4e4b\u5916\u7684\u8d44\u6e90\u5b9a\u4e49<\/h3>\n
\u5b9a\u4e49Cognito\u548cDynamoDB\u3002<\/p>\n
\/\/ Cognito\u306eUserPool\u5b9a\u7fa9<\/span>\r\nconst<\/span> userPool<\/span> =<\/span> new<\/span> UserPool<\/span>(<\/span>this<\/span>,<\/span> \"<\/span>UserPool<\/span>\"<\/span>,<\/span> {<\/span>\r\n  userPoolName<\/span>:<\/span> \"<\/span>DemoAPIUserPool<\/span>\"<\/span>,<\/span>\r\n  signInType<\/span>:<\/span> SignInType<\/span>.<\/span>USERNAME<\/span>\r\n})<\/span>\r\n\r\n\/\/ DynamoDB\u306eTable\u5b9a\u7fa9<\/span>\r\nconst<\/span> table<\/span> =<\/span> new<\/span> Table<\/span>(<\/span>this<\/span>,<\/span> \"<\/span>CDKPostTable<\/span>\"<\/span>,<\/span> {<\/span>\r\n  tableName<\/span>:<\/span> \"<\/span>CDKPostTable<\/span>\"<\/span>,<\/span>\r\n  partitionKey<\/span>:<\/span> {<\/span>\r\n    name<\/span>:<\/span> \"<\/span>id<\/span>\"<\/span>,<\/span>\r\n    type<\/span>:<\/span> AttributeType<\/span>.<\/span>STRING<\/span>\r\n  },<\/span>\r\n  sortKey<\/span>:<\/span> {<\/span>\r\n    name<\/span>:<\/span> \"<\/span>create_time<\/span>\"<\/span>,<\/span>\r\n    type<\/span>:<\/span> AttributeType<\/span>.<\/span>STRING<\/span>\r\n  },<\/span>\r\n  billingMode<\/span>:<\/span> BillingMode<\/span>.<\/span>PROVISIONED<\/span>,<\/span>\r\n  readCapacity<\/span>:<\/span> 1<\/span>,<\/span>\r\n  writeCapacity<\/span>:<\/span> 1<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n
AppSync\u7684\u5b9a\u4e49<\/h3>\n
\u6211\u5011\u8981\u5b9a\u7fa9AppSync\u7684\u672c\u9ad4\u3002<\/p>\n
\n
propatydescriptionnameAPI\u540dlogConfig\u6b8b\u3059\u30ed\u30b0\u306e\u30ec\u30d9\u30ebuserPoolConfigCognitoUserPool\u306e\u60c5\u5831schemaDefinitionFileGraphQL\u306eSchema\u30d5\u30a1\u30a4\u30eb\u306e\u30d1\u30b9<\/div>\n<\/div>\n
const<\/span> api<\/span> =<\/span> new<\/span> GraphQLApi<\/span>(<\/span>this<\/span>,<\/span> \"<\/span>PostAPI<\/span>\"<\/span>,<\/span> {<\/span>\r\n  name<\/span>:<\/span> \"<\/span>PostAPI<\/span>\"<\/span>,<\/span>\r\n  logConfig<\/span>:<\/span> {<\/span>\r\n    fieldLogLevel<\/span>:<\/span> FieldLogLevel<\/span>.<\/span>ALL<\/span>\r\n  },<\/span>\r\n  userPoolConfig<\/span>:<\/span> {<\/span>\r\n    userPool<\/span>,<\/span>\r\n    defaultAction<\/span>:<\/span> UserPoolDefaultAction<\/span>.<\/span>ALLOW<\/span>\r\n  },<\/span>\r\n  schemaDefinitionFile<\/span>:<\/span> join<\/span>(<\/span>__dirname<\/span>,<\/span> \"<\/span>schema.graphql<\/span>\"<\/span>)<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n
DataSource\u7684\u5b9a\u4e49\u662f\u4ec0\u4e48\uff1f<\/h3>\n
\u6211\u4eec\u5b9a\u4e49AppSync\u7684DataSource\u3002
\n\u56e0\u4e3a\u4e4b\u524d\u6211\u4eec\u5b9a\u4e49\u4e86GraphQLAApi\uff0c\u5e76\u4e14\u5b83\u6709\u4e00\u4e2a\u540d\u4e3aaddDynamoDbDataSource()\u7684\u65b9\u6cd5\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u5b9a\u4e49DataSource\u3002
\n\u6211\u4eec\u5c06\u6570\u636e\u6e90\u540d\u79f0\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f20\u9012\uff0c\u5c06\u63cf\u8ff0\u4f5c\u4e3a\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f20\u9012\uff0c\u5e76\u5c06DynamoDB\u7684\u8868\u4f5c\u4e3a\u7b2c\u4e09\u4e2a\u53c2\u6570\u4f20\u9012\u3002<\/p>\n
const<\/span> datasource<\/span> =<\/span> api<\/span>.<\/span>addDynamoDbDataSource<\/span>(<\/span>\"<\/span>PostAPIDataSource<\/span>\"<\/span>,<\/span> \"\"<\/span>,<\/span> table<\/span>)<\/span>\r\n<\/code><\/pre>\n
Resolver\u7684\u5b9a\u4e49\u662f\u4ec0\u4e48\uff1f<\/h3>\n
\u5728GraphQL\u7684\u6bcf\u4e2a\u67e5\u8be2\/\u53d8\u5f02\u4e2d\u5b9a\u4e49\u89e3\u6790\u5668\u3002
\n\u56e0\u4e3a\u4e4b\u524d\u5b9a\u4e49\u7684\u6570\u636e\u6e90\u5177\u6709\u4e00\u4e2a\u540d\u4e3acreateResolver()\u7684\u65b9\u6cd5\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u5b9a\u4e49\u89e3\u6790\u5668\u3002<\/p>\n
\n
propatydescriptiontypeNameQuery\u306a\u306e\u304bMutation\u306a\u306e\u304bfieldNameGraphQL\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u540drequestMappingTemplate\u30ea\u30af\u30a8\u30b9\u30c8\u6642\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8responseMappingTemplate\u30ec\u30b9\u30dd\u30f3\u30b9\u6642\u306e\u30de\u30c3\u30d4\u30f3\u30b0\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8<\/div>\n<\/div>\n
datasource<\/span>.<\/span>createResolver<\/span>({<\/span>\r\n  typeName<\/span>:<\/span> \"<\/span>Query<\/span>\"<\/span>,<\/span>\r\n  fieldName<\/span>:<\/span> \"<\/span>all<\/span>\"<\/span>,<\/span>\r\n  requestMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbScanTable<\/span>(),<\/span>\r\n  responseMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbResultList<\/span>()<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n
\u76ee\u524d\u63d0\u4f9b\u4e86\u4e00\u79cd\u80fd\u591f\u751f\u6210\u64cd\u4f5cDynamoDB\u7684MappingTemplate\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u626b\u63cf\uff08Scan\uff09\u3001\u83b7\u53d6\u9879\uff08GetItem\uff09\u3001\u63d2\u5165\u9879\uff08PutItem\uff09\u548c\u5220\u9664\u9879\uff08DeleteItem\uff09\u3002<\/p>\n
MappingTemplate<\/span>.<\/span>dynamoDbScanTable<\/span>()<\/span>\r\nMappingTemplate<\/span>.<\/span>dynamoDbGetItem<\/span>()<\/span>\r\nMappingTemplate<\/span>.<\/span>dynamoDbPutItem<\/span>()<\/span>\r\nMappingTemplate<\/span>.<\/span>dynamoDbDeleteItem<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u6211\u8ba4\u4e3a\u5728\u8fd9\u91cc\u4f1a\u6709\u4e00\u4e9b\u4eba\u610f\u8bc6\u5230\uff0c\u6ca1\u6709\u67e5\u8be2(Query)…
\n\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u60a8\u9700\u8981\u81ea\u5df1\u7f16\u5199 MappingTemplate\u3002
\n\u5982\u679c\u60a8\u81ea\u5df1\u7f16\u5199\u4e86 MappingTemplate\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528 MappingTemplate.fromString() \u8fdb\u884c\u5b9a\u4e49\u3002
\n\u521a\u624d\u4ecb\u7ecd\u7684\u4ec5\u4ec5\u662f\u4e00\u4e2a\u65b9\u4fbf\u7684\u51fd\u6570\uff0c\u5f53\u7136\u60a8\u4e5f\u53ef\u4ee5\u50cf\u8fd9\u6837\u81ea\u5df1\u7f16\u5199\u548c\u5b9a\u4e49\u3002<\/p>\n
const<\/span> queryMappingTemplate<\/span> =<\/span> `\r\n  {\r\n    \"version\": \"2017-02-28\",\r\n    \"operation\": \"Query\",\r\n    \"query\": {\r\n      \"expression\": \"#id = :id AND #createTime BETWEEN :start AND :end\",\r\n      \"expressionNames\": {\r\n        \"#id\": \"id\"\r\n        \"#createTime\": \"create_time\"\r\n      },\r\n      \"expressionValues\": {\r\n        \":id\": $util.dynamodb.toDynamoDBJson($ctx.args.id),\r\n        \":start\": $util.dynamodb.toDynamoDBJson($ctx.args.start),\r\n        \":end\": $util.dynamodb.toDynamoDBJson($ctx.args.end)\r\n      }\r\n    }\r\n  }\r\n`<\/span>\r\ndatasource<\/span>.<\/span>createResolver<\/span>({<\/span>\r\n  typeName<\/span>:<\/span> \"<\/span>Query<\/span>\"<\/span>,<\/span>\r\n  fieldName<\/span>:<\/span> \"<\/span>query<\/span>\"<\/span>,<\/span>\r\n  requestMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>fromString<\/span>(<\/span>queryMappingTemplate<\/span>),<\/span>\r\n  responseMappingTemplate<\/span>:<\/span> MappingTemplate<\/span>.<\/span>dynamoDbResultList<\/span>()<\/span>\r\n})<\/span>\r\n<\/code><\/pre>\n
\u540c\u65f6\uff0c\u8fd8\u4e3a\u54cd\u5e94\u7684MappingTemplate\u51c6\u5907\u4e86\u9009\u62e9\u3002
\n\u5982\u679c\u8981\u8fd4\u56de\u6570\u7ec4\uff0c\u5219\u4f7f\u7528dynamoDbResultList()\uff0c\u5982\u679c\u8981\u8fd4\u56de\u5355\u4e2a\u9879\u76ee\uff0c\u5219\u4f7f\u7528dynamoDbResultItem()\u3002<\/p>\n
MappingTemplate<\/span>.<\/span>dynamoDbResultList<\/span>()<\/span>\r\nMappingTemplate<\/span>.<\/span>dynamoDbResultItem<\/span>()<\/span>\r\n<\/code><\/pre>\n
\u6574\u7406<\/h2>\n
\u6211\u4e2a\u4eba\u8ba4\u4e3a\uff0cAppSync\u7684\u9ad8\u7ea7\u6784\u9020\u4e2d\u7684Resolver\u5b9a\u4e49\u90e8\u5206\u6700\u4ee4\u4eba\u9ad8\u5174\u3002
\n\u7531\u4e8e\u63d0\u4f9b\u4e86\u8bf8\u5982MappingTemplate.dynamoDbPutItem()\u8fd9\u6837\u65b9\u4fbf\u7684\u51fd\u6570\uff0c\u4e0d\u518d\u9700\u8981\u624b\u5199\u6240\u6709Resolver\uff0c\u4ee3\u7801\u91cf\u5927\u5927\u51cf\u5c11\u3002
\n\u6b64\u5916\uff0c\u5728\u4ee5\u524d\u4f7f\u7528Cfnxxxx\u5b9a\u4e49\u8d44\u6e90\u65f6\uff0c\u9700\u8981\u5728\u4ee3\u7801\u4e2d\u4f7f\u7528addDependsOn()\u6765\u786e\u4fdd\u8d44\u6e90\u6309\u987a\u5e8f\u90e8\u7f72\uff0c\u4f46\u73b0\u5728\u5b83\u5728\u5185\u90e8\u5b8c\u6210\u4e86\u8fd9\u4e2a\u4efb\u52a1\uff0c\u8fd9\u4e00\u70b9\u4e5f\u975e\u5e38\u65b9\u4fbf\uff08\u56e0\u4e3a\u6211\u7ecf\u5e38\u4f1a\u5fd8\u8bb0\uff09\u3002<\/p>\n
\u5e0c\u671b\u5927\u5bb6\u90fd\u80fd\u5c1d\u8bd5\u4e00\u4e0b AWSCDK\uff01\u518d\u89c1\uff01\uff01\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u9996\u5148 \u56e0\u4e3a AWSCDK 1.19.0 \u4e2d\u7684 AppSync \u9ad8\u7ea7\u7ed3\u6784\u5df2\u7ecf\u63a8\u51fa\uff0c\u8ba9\u6211\u611f\u5230\u975e\u5e38\u5f00\u5fc3\uff0c\u6240\u4ee5\u6211\u5199\u4e0b\u4e86 […]<\/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-48260","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nAWS CDK \u65b0\u589e\u4e86 AppSync \u7684\u9ad8\u7ea7\u6784\u5efa - 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\/aws-cdk-\u65b0\u589e\u4e86-appsync-\u7684\u9ad8\u7ea7\u6784\u5efa\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AWS CDK \u65b0\u589e\u4e86 AppSync \u7684\u9ad8\u7ea7\u6784\u5efa\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u56e0\u4e3a AWSCDK 1.19.0 \u4e2d\u7684 AppSync \u9ad8\u7ea7\u7ed3\u6784\u5df2\u7ecf\u63a8\u51fa\uff0c\u8ba9\u6211\u611f\u5230\u975e\u5e38\u5f00\u5fc3\uff0c\u6240\u4ee5\u6211\u5199\u4e0b\u4e86 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/aws-cdk-\u65b0\u589e\u4e86-appsync-\u7684\u9ad8\u7ea7\u6784\u5efa\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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