AWS 文檔 AWS SDK示例 GitHub 回購中有更多SDK示例
本文為英文版的機器翻譯版本,如內容有任何歧義或不一致之處,概以英文版為準。
使用 Lambda 函數自動遷移已知的 Amazon Cognito 知使用者 AWS SDK
下列程式碼範例說明如何使用 Lambda 函數自動遷移已知的 Amazon Cognito 使用者。
設定使用者集區以呼叫
MigrateUser
觸發器的 Lambda 函數。使用不在使用者集區中的使用者名稱和電子郵件登入 Amazon Cognito。
Lambda 函數會掃描 DynamoDB 表格,並自動將已知的使用者移轉至使用者集區。
執行忘記密碼流程以重設已遷移使用者的密碼。
以新使用者身分登入,然後清理資源。
- Go
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- SDK對於轉到 V2
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 在命令提示中執行互動式案例。
import ( "errors" "fmt" "log" "strings" "user_pools_and_lambda_triggers/actions" "github.com/aws/aws-sdk-go-v2/aws" "github.com/aws/aws-sdk-go-v2/service/cognitoidentityprovider" "github.com/aws/aws-sdk-go-v2/service/cognitoidentityprovider/types" "github.com/awsdocs/aws-doc-sdk-examples/gov2/demotools" ) // MigrateUser separates the steps of this scenario into individual functions so that // they are simpler to read and understand. type MigrateUser struct { helper IScenarioHelper questioner demotools.IQuestioner resources Resources cognitoActor *actions.CognitoActions } // NewMigrateUser constructs a new migrate user runner. func NewMigrateUser(sdkConfig aws.Config, questioner demotools.IQuestioner, helper IScenarioHelper) MigrateUser { scenario := MigrateUser{ helper: helper, questioner: questioner, resources: Resources{}, cognitoActor: &actions.CognitoActions{CognitoClient: cognitoidentityprovider.NewFromConfig(sdkConfig)}, } scenario.resources.init(scenario.cognitoActor, questioner) return scenario } // AddMigrateUserTrigger adds a Lambda handler as an invocation target for the MigrateUser trigger. func (runner *MigrateUser) AddMigrateUserTrigger(userPoolId string, functionArn string) { log.Printf("Let's add a Lambda function to handle the MigrateUser trigger from Cognito.\n" + "This trigger happens when an unknown user signs in, and lets your function take action before Cognito\n" + "rejects the user.\n\n") err := runner.cognitoActor.UpdateTriggers( userPoolId, actions.TriggerInfo{Trigger: actions.UserMigration, HandlerArn: aws.String(functionArn)}) if err != nil { panic(err) } log.Printf("Lambda function %v added to user pool %v to handle the MigrateUser trigger.\n", functionArn, userPoolId) log.Println(strings.Repeat("-", 88)) } // SignInUser adds a new user to the known users table and signs that user in to Amazon Cognito. func (runner *MigrateUser) SignInUser(usersTable string, clientId string) (bool, actions.User) { log.Println("Let's sign in a user to your Cognito user pool. When the username and email matches an entry in the\n" + "DynamoDB known users table, the email is automatically verified and the user is migrated to the Cognito user pool.") user := actions.User{} user.UserName = runner.questioner.Ask("\nEnter a username:") user.UserEmail = runner.questioner.Ask("\nEnter an email that you own. This email will be used to confirm user migration\n" + "during this example:") runner.helper.AddKnownUser(usersTable, user) var err error var resetRequired *types.PasswordResetRequiredException var authResult *types.AuthenticationResultType signedIn := false for !signedIn && resetRequired == nil { log.Printf("Signing in to Cognito as user '%v'. The expected result is a PasswordResetRequiredException.\n\n", user.UserName) authResult, err = runner.cognitoActor.SignIn(clientId, user.UserName, "_") if err != nil { if errors.As(err, &resetRequired) { log.Printf("\nUser '%v' is not in the Cognito user pool but was found in the DynamoDB known users table.\n"+ "User migration is started and a password reset is required.", user.UserName) } else { panic(err) } } else { log.Printf("User '%v' successfully signed in. This is unexpected and probably means you have not\n"+ "cleaned up a previous run of this scenario, so the user exist in the Cognito user pool.\n"+ "You can continue this example and select to clean up resources, or manually remove\n"+ "the user from your user pool and try again.", user.UserName) runner.resources.userAccessTokens = append(runner.resources.userAccessTokens, *authResult.AccessToken) signedIn = true } } log.Println(strings.Repeat("-", 88)) return resetRequired != nil, user } // ResetPassword starts a password recovery flow. func (runner *MigrateUser) ResetPassword(clientId string, user actions.User) { wantCode := runner.questioner.AskBool(fmt.Sprintf("In order to migrate the user to Cognito, you must be able to receive a confirmation\n"+ "code by email at %v. Do you want to send a code (y/n)?", user.UserEmail), "y") if !wantCode { log.Println("To complete this example and successfully migrate a user to Cognito, you must enter an email\n" + "you own that can receive a confirmation code.") return } codeDelivery, err := runner.cognitoActor.ForgotPassword(clientId, user.UserName) if err != nil { panic(err) } log.Printf("\nA confirmation code has been sent to %v.", *codeDelivery.Destination) code := runner.questioner.Ask("Check your email and enter it here:") confirmed := false password := runner.questioner.AskPassword("\nEnter a password that has at least eight characters, uppercase, lowercase, numbers and symbols.\n"+ "(the password will not display as you type):", 8) for !confirmed { log.Printf("\nConfirming password reset for user '%v'.\n", user.UserName) err = runner.cognitoActor.ConfirmForgotPassword(clientId, code, user.UserName, password) if err != nil { var invalidPassword *types.InvalidPasswordException if errors.As(err, &invalidPassword) { password = runner.questioner.AskPassword("\nEnter another password:", 8) } else { panic(err) } } else { confirmed = true } } log.Printf("User '%v' successfully confirmed and migrated.\n", user.UserName) log.Println("Signing in with your username and password...") authResult, err := runner.cognitoActor.SignIn(clientId, user.UserName, password) if err != nil { panic(err) } log.Printf("Successfully signed in. Your access token starts with: %v...\n", (*authResult.AccessToken)[:10]) runner.resources.userAccessTokens = append(runner.resources.userAccessTokens, *authResult.AccessToken) log.Println(strings.Repeat("-", 88)) } // Run runs the scenario. func (runner *MigrateUser) Run(stackName string) { defer func() { if r := recover(); r != nil { log.Println("Something went wrong with the demo.") runner.resources.Cleanup() } }() log.Println(strings.Repeat("-", 88)) log.Printf("Welcome\n") log.Println(strings.Repeat("-", 88)) stackOutputs, err := runner.helper.GetStackOutputs(stackName) if err != nil { panic(err) } runner.resources.userPoolId = stackOutputs["UserPoolId"] runner.AddMigrateUserTrigger(stackOutputs["UserPoolId"], stackOutputs["MigrateUserFunctionArn"]) runner.resources.triggers = append(runner.resources.triggers, actions.UserMigration) resetNeeded, user := runner.SignInUser(stackOutputs["TableName"], stackOutputs["UserPoolClientId"]) if resetNeeded { runner.helper.ListRecentLogEvents(stackOutputs["MigrateUserFunction"]) runner.ResetPassword(stackOutputs["UserPoolClientId"], user) } runner.resources.Cleanup() log.Println(strings.Repeat("-", 88)) log.Println("Thanks for watching!") log.Println(strings.Repeat("-", 88)) }
使用 Lambda 函數處理
MigrateUser
觸發器。const TABLE_NAME = "TABLE_NAME" // UserInfo defines structured user data that can be marshalled to a DynamoDB format. type UserInfo struct { UserName string `dynamodbav:"UserName"` UserEmail string `dynamodbav:"UserEmail"` } type handler struct { dynamoClient *dynamodb.Client } // HandleRequest handles the MigrateUser event by looking up a user in an Amazon DynamoDB table and // specifying whether they should be migrated to the user pool. func (h *handler) HandleRequest(ctx context.Context, event events.CognitoEventUserPoolsMigrateUser) (events.CognitoEventUserPoolsMigrateUser, error) { log.Printf("Received migrate trigger from %v for user '%v'", event.TriggerSource, event.UserName) if event.TriggerSource != "UserMigration_Authentication" { return event, nil } tableName := os.Getenv(TABLE_NAME) user := UserInfo{ UserName: event.UserName, } log.Printf("Looking up user '%v' in table %v.\n", user.UserName, tableName) filterEx := expression.Name("UserName").Equal(expression.Value(user.UserName)) expr, err := expression.NewBuilder().WithFilter(filterEx).Build() if err != nil { log.Printf("Error building expression to query for user '%v'.\n", user.UserName) return event, err } output, err := h.dynamoClient.Scan(ctx, &dynamodb.ScanInput{ TableName: aws.String(tableName), FilterExpression: expr.Filter(), ExpressionAttributeNames: expr.Names(), ExpressionAttributeValues: expr.Values(), }) if err != nil { log.Printf("Error looking up user '%v'.\n", user.UserName) return event, err } if output.Items == nil || len(output.Items) == 0 { log.Printf("User '%v' not found, not migrating user.\n", user.UserName) return event, err } var users []UserInfo err = attributevalue.UnmarshalListOfMaps(output.Items, &users) if err != nil { log.Printf("Couldn't unmarshal DynamoDB items. Here's why: %v\n", err) return event, err } user = users[0] log.Printf("UserName '%v' found with email %v. User is migrated and must reset password.\n", user.UserName, user.UserEmail) event.CognitoEventUserPoolsMigrateUserResponse.UserAttributes = map[string]string{ "email": user.UserEmail, "email_verified": "true", // email_verified is required for the forgot password flow. } event.CognitoEventUserPoolsMigrateUserResponse.FinalUserStatus = "RESET_REQUIRED" event.CognitoEventUserPoolsMigrateUserResponse.MessageAction = "SUPPRESS" return event, err } func main() { sdkConfig, err := config.LoadDefaultConfig(context.TODO()) if err != nil { log.Panicln(err) } h := handler{ dynamoClient: dynamodb.NewFromConfig(sdkConfig), } lambda.Start(h.HandleRequest) }
建立執行一般工作的結構。
// IScenarioHelper defines common functions used by the workflows in this example. type IScenarioHelper interface { Pause(secs int) GetStackOutputs(stackName string) (actions.StackOutputs, error) PopulateUserTable(tableName string) GetKnownUsers(tableName string) (actions.UserList, error) AddKnownUser(tableName string, user actions.User) ListRecentLogEvents(functionName string) } // ScenarioHelper contains AWS wrapper structs used by the workflows in this example. type ScenarioHelper struct { questioner demotools.IQuestioner dynamoActor *actions.DynamoActions cfnActor *actions.CloudFormationActions cwlActor *actions.CloudWatchLogsActions isTestRun bool } // NewScenarioHelper constructs a new scenario helper. func NewScenarioHelper(sdkConfig aws.Config, questioner demotools.IQuestioner) ScenarioHelper { scenario := ScenarioHelper{ questioner: questioner, dynamoActor: &actions.DynamoActions{DynamoClient: dynamodb.NewFromConfig(sdkConfig)}, cfnActor: &actions.CloudFormationActions{CfnClient: cloudformation.NewFromConfig(sdkConfig)}, cwlActor: &actions.CloudWatchLogsActions{CwlClient: cloudwatchlogs.NewFromConfig(sdkConfig)}, } return scenario } // Pause waits for the specified number of seconds. func (helper ScenarioHelper) Pause(secs int) { if !helper.isTestRun { time.Sleep(time.Duration(secs) * time.Second) } } // GetStackOutputs gets the outputs from the specified CloudFormation stack in a structured format. func (helper ScenarioHelper) GetStackOutputs(stackName string) (actions.StackOutputs, error) { return helper.cfnActor.GetOutputs(stackName), nil } // PopulateUserTable fills the known user table with example data. func (helper ScenarioHelper) PopulateUserTable(tableName string) { log.Printf("First, let's add some users to the DynamoDB %v table we'll use for this example.\n", tableName) err := helper.dynamoActor.PopulateTable(tableName) if err != nil { panic(err) } } // GetKnownUsers gets the users from the known users table in a structured format. func (helper ScenarioHelper) GetKnownUsers(tableName string) (actions.UserList, error) { knownUsers, err := helper.dynamoActor.Scan(tableName) if err != nil { log.Printf("Couldn't get known users from table %v. Here's why: %v\n", tableName, err) } return knownUsers, err } // AddKnownUser adds a user to the known users table. func (helper ScenarioHelper) AddKnownUser(tableName string, user actions.User) { log.Printf("Adding user '%v' with email '%v' to the DynamoDB known users table...\n", user.UserName, user.UserEmail) err := helper.dynamoActor.AddUser(tableName, user) if err != nil { panic(err) } } // ListRecentLogEvents gets the most recent log stream and events for the specified Lambda function and displays them. func (helper ScenarioHelper) ListRecentLogEvents(functionName string) { log.Println("Waiting a few seconds to let Lambda write to CloudWatch Logs...") helper.Pause(10) log.Println("Okay, let's check the logs to find what's happened recently with your Lambda function.") logStream, err := helper.cwlActor.GetLatestLogStream(functionName) if err != nil { panic(err) } log.Printf("Getting some recent events from log stream %v\n", *logStream.LogStreamName) events, err := helper.cwlActor.GetLogEvents(functionName, *logStream.LogStreamName, 10) if err != nil { panic(err) } for _, event := range events { log.Printf("\t%v", *event.Message) } log.Println(strings.Repeat("-", 88)) }
創建一個包裝 Amazon Cognito 操作的結構。
type CognitoActions struct { CognitoClient *cognitoidentityprovider.Client } // Trigger and TriggerInfo define typed data for updating an Amazon Cognito trigger. type Trigger int const ( PreSignUp Trigger = iota UserMigration PostAuthentication ) type TriggerInfo struct { Trigger Trigger HandlerArn *string } // UpdateTriggers adds or removes Lambda triggers for a user pool. When a trigger is specified with a `nil` value, // it is removed from the user pool. func (actor CognitoActions) UpdateTriggers(userPoolId string, triggers ...TriggerInfo) error { output, err := actor.CognitoClient.DescribeUserPool(context.TODO(), &cognitoidentityprovider.DescribeUserPoolInput{ UserPoolId: aws.String(userPoolId), }) if err != nil { log.Printf("Couldn't get info about user pool %v. Here's why: %v\n", userPoolId, err) return err } lambdaConfig := output.UserPool.LambdaConfig for _, trigger := range triggers { switch trigger.Trigger { case PreSignUp: lambdaConfig.PreSignUp = trigger.HandlerArn case UserMigration: lambdaConfig.UserMigration = trigger.HandlerArn case PostAuthentication: lambdaConfig.PostAuthentication = trigger.HandlerArn } } _, err = actor.CognitoClient.UpdateUserPool(context.TODO(), &cognitoidentityprovider.UpdateUserPoolInput{ UserPoolId: aws.String(userPoolId), LambdaConfig: lambdaConfig, }) if err != nil { log.Printf("Couldn't update user pool %v. Here's why: %v\n", userPoolId, err) } return err } // SignUp signs up a user with Amazon Cognito. func (actor CognitoActions) SignUp(clientId string, userName string, password string, userEmail string) (bool, error) { confirmed := false output, err := actor.CognitoClient.SignUp(context.TODO(), &cognitoidentityprovider.SignUpInput{ ClientId: aws.String(clientId), Password: aws.String(password), Username: aws.String(userName), UserAttributes: []types.AttributeType{ {Name: aws.String("email"), Value: aws.String(userEmail)}, }, }) if err != nil { var invalidPassword *types.InvalidPasswordException if errors.As(err, &invalidPassword) { log.Println(*invalidPassword.Message) } else { log.Printf("Couldn't sign up user %v. Here's why: %v\n", userName, err) } } else { confirmed = output.UserConfirmed } return confirmed, err } // SignIn signs in a user to Amazon Cognito using a username and password authentication flow. func (actor CognitoActions) SignIn(clientId string, userName string, password string) (*types.AuthenticationResultType, error) { var authResult *types.AuthenticationResultType output, err := actor.CognitoClient.InitiateAuth(context.TODO(), &cognitoidentityprovider.InitiateAuthInput{ AuthFlow: "USER_PASSWORD_AUTH", ClientId: aws.String(clientId), AuthParameters: map[string]string{"USERNAME": userName, "PASSWORD": password}, }) if err != nil { var resetRequired *types.PasswordResetRequiredException if errors.As(err, &resetRequired) { log.Println(*resetRequired.Message) } else { log.Printf("Couldn't sign in user %v. Here's why: %v\n", userName, err) } } else { authResult = output.AuthenticationResult } return authResult, err } // ForgotPassword starts a password recovery flow for a user. This flow typically sends a confirmation code // to the user's configured notification destination, such as email. func (actor CognitoActions) ForgotPassword(clientId string, userName string) (*types.CodeDeliveryDetailsType, error) { output, err := actor.CognitoClient.ForgotPassword(context.TODO(), &cognitoidentityprovider.ForgotPasswordInput{ ClientId: aws.String(clientId), Username: aws.String(userName), }) if err != nil { log.Printf("Couldn't start password reset for user '%v'. Here;s why: %v\n", userName, err) } return output.CodeDeliveryDetails, err } // ConfirmForgotPassword confirms a user with a confirmation code and a new password. func (actor CognitoActions) ConfirmForgotPassword(clientId string, code string, userName string, password string) error { _, err := actor.CognitoClient.ConfirmForgotPassword(context.TODO(), &cognitoidentityprovider.ConfirmForgotPasswordInput{ ClientId: aws.String(clientId), ConfirmationCode: aws.String(code), Password: aws.String(password), Username: aws.String(userName), }) if err != nil { var invalidPassword *types.InvalidPasswordException if errors.As(err, &invalidPassword) { log.Println(*invalidPassword.Message) } else { log.Printf("Couldn't confirm user %v. Here's why: %v", userName, err) } } return err } // DeleteUser removes a user from the user pool. func (actor CognitoActions) DeleteUser(userAccessToken string) error { _, err := actor.CognitoClient.DeleteUser(context.TODO(), &cognitoidentityprovider.DeleteUserInput{ AccessToken: aws.String(userAccessToken), }) if err != nil { log.Printf("Couldn't delete user. Here's why: %v\n", err) } return err } // AdminCreateUser uses administrator credentials to add a user to a user pool. This method leaves the user // in a state that requires they enter a new password next time they sign in. func (actor CognitoActions) AdminCreateUser(userPoolId string, userName string, userEmail string) error { _, err := actor.CognitoClient.AdminCreateUser(context.TODO(), &cognitoidentityprovider.AdminCreateUserInput{ UserPoolId: aws.String(userPoolId), Username: aws.String(userName), MessageAction: types.MessageActionTypeSuppress, UserAttributes: []types.AttributeType{{Name: aws.String("email"), Value: aws.String(userEmail)}}, }) if err != nil { var userExists *types.UsernameExistsException if errors.As(err, &userExists) { log.Printf("User %v already exists in the user pool.", userName) err = nil } else { log.Printf("Couldn't create user %v. Here's why: %v\n", userName, err) } } return err } // AdminSetUserPassword uses administrator credentials to set a password for a user without requiring a // temporary password. func (actor CognitoActions) AdminSetUserPassword(userPoolId string, userName string, password string) error { _, err := actor.CognitoClient.AdminSetUserPassword(context.TODO(), &cognitoidentityprovider.AdminSetUserPasswordInput{ Password: aws.String(password), UserPoolId: aws.String(userPoolId), Username: aws.String(userName), Permanent: true, }) if err != nil { var invalidPassword *types.InvalidPasswordException if errors.As(err, &invalidPassword) { log.Println(*invalidPassword.Message) } else { log.Printf("Couldn't set password for user %v. Here's why: %v\n", userName, err) } } return err }
建立包裝 DynamoDB 動作的結構。
// DynamoActions encapsulates the Amazon Simple Notification Service (Amazon SNS) actions // used in the examples. type DynamoActions struct { DynamoClient *dynamodb.Client } // User defines structured user data. type User struct { UserName string UserEmail string LastLogin *LoginInfo `dynamodbav:",omitempty"` } // LoginInfo defines structured custom login data. type LoginInfo struct { UserPoolId string ClientId string Time string } // UserList defines a list of users. type UserList struct { Users []User } // UserNameList returns the usernames contained in a UserList as a list of strings. func (users *UserList) UserNameList() []string { names := make([]string, len(users.Users)) for i := 0; i < len(users.Users); i++ { names[i] = users.Users[i].UserName } return names } // PopulateTable adds a set of test users to the table. func (actor DynamoActions) PopulateTable(tableName string) error { var err error var item map[string]types.AttributeValue var writeReqs []types.WriteRequest for i := 1; i < 4; i++ { item, err = attributevalue.MarshalMap(User{UserName: fmt.Sprintf("test_user_%v", i), UserEmail: fmt.Sprintf("test_email_%v@example.com", i)}) if err != nil { log.Printf("Couldn't marshall user into DynamoDB format. Here's why: %v\n", err) return err } writeReqs = append(writeReqs, types.WriteRequest{PutRequest: &types.PutRequest{Item: item}}) } _, err = actor.DynamoClient.BatchWriteItem(context.TODO(), &dynamodb.BatchWriteItemInput{ RequestItems: map[string][]types.WriteRequest{tableName: writeReqs}, }) if err != nil { log.Printf("Couldn't populate table %v with users. Here's why: %v\n", tableName, err) } return err } // Scan scans the table for all items. func (actor DynamoActions) Scan(tableName string) (UserList, error) { var userList UserList output, err := actor.DynamoClient.Scan(context.TODO(), &dynamodb.ScanInput{ TableName: aws.String(tableName), }) if err != nil { log.Printf("Couldn't scan table %v for items. Here's why: %v\n", tableName, err) } else { err = attributevalue.UnmarshalListOfMaps(output.Items, &userList.Users) if err != nil { log.Printf("Couldn't unmarshal items into users. Here's why: %v\n", err) } } return userList, err } // AddUser adds a user item to a table. func (actor DynamoActions) AddUser(tableName string, user User) error { userItem, err := attributevalue.MarshalMap(user) if err != nil { log.Printf("Couldn't marshall user to item. Here's why: %v\n", err) } _, err = actor.DynamoClient.PutItem(context.TODO(), &dynamodb.PutItemInput{ Item: userItem, TableName: aws.String(tableName), }) if err != nil { log.Printf("Couldn't put item in table %v. Here's why: %v", tableName, err) } return err }
建立包裝 CloudWatch 記錄動作的結構。
type CloudWatchLogsActions struct { CwlClient *cloudwatchlogs.Client } // GetLatestLogStream gets the most recent log stream for a Lambda function. func (actor CloudWatchLogsActions) GetLatestLogStream(functionName string) (types.LogStream, error) { var logStream types.LogStream logGroupName := fmt.Sprintf("/aws/lambda/%s", functionName) output, err := actor.CwlClient.DescribeLogStreams(context.TODO(), &cloudwatchlogs.DescribeLogStreamsInput{ Descending: aws.Bool(true), Limit: aws.Int32(1), LogGroupName: aws.String(logGroupName), OrderBy: types.OrderByLastEventTime, }) if err != nil { log.Printf("Couldn't get log streams for log group %v. Here's why: %v\n", logGroupName, err) } else { logStream = output.LogStreams[0] } return logStream, err } // GetLogEvents gets the most recent eventCount events from the specified log stream. func (actor CloudWatchLogsActions) GetLogEvents(functionName string, logStreamName string, eventCount int32) ( []types.OutputLogEvent, error) { var events []types.OutputLogEvent logGroupName := fmt.Sprintf("/aws/lambda/%s", functionName) output, err := actor.CwlClient.GetLogEvents(context.TODO(), &cloudwatchlogs.GetLogEventsInput{ LogStreamName: aws.String(logStreamName), Limit: aws.Int32(eventCount), LogGroupName: aws.String(logGroupName), }) if err != nil { log.Printf("Couldn't get log event for log stream %v. Here's why: %v\n", logStreamName, err) } else { events = output.Events } return events, err }
創建一個包裝 AWS CloudFormation 動作的結構。
// StackOutputs defines a map of outputs from a specific stack. type StackOutputs map[string]string type CloudFormationActions struct { CfnClient *cloudformation.Client } // GetOutputs gets the outputs from a CloudFormation stack and puts them into a structured format. func (actor CloudFormationActions) GetOutputs(stackName string) StackOutputs { output, err := actor.CfnClient.DescribeStacks(context.TODO(), &cloudformation.DescribeStacksInput{ StackName: aws.String(stackName), }) if err != nil || len(output.Stacks) == 0 { log.Panicf("Couldn't find a CloudFormation stack named %v. Here's why: %v\n", stackName, err) } stackOutputs := StackOutputs{} for _, out := range output.Stacks[0].Outputs { stackOutputs[*out.OutputKey] = *out.OutputValue } return stackOutputs }
清理資源。
// Resources keeps track of AWS resources created during an example and handles // cleanup when the example finishes. type Resources struct { userPoolId string userAccessTokens []string triggers []actions.Trigger cognitoActor *actions.CognitoActions questioner demotools.IQuestioner } func (resources *Resources) init(cognitoActor *actions.CognitoActions, questioner demotools.IQuestioner) { resources.userAccessTokens = []string{} resources.triggers = []actions.Trigger{} resources.cognitoActor = cognitoActor resources.questioner = questioner } // Cleanup deletes all AWS resources created during an example. func (resources *Resources) Cleanup() { defer func() { if r := recover(); r != nil { log.Printf("Something went wrong during cleanup.\n%v\n", r) log.Println("Use the AWS Management Console to remove any remaining resources \n" + "that were created for this scenario.") } }() wantDelete := resources.questioner.AskBool("Do you want to remove all of the AWS resources that were created "+ "during this demo (y/n)?", "y") if wantDelete { for _, accessToken := range resources.userAccessTokens { err := resources.cognitoActor.DeleteUser(accessToken) if err != nil { log.Println("Couldn't delete user during cleanup.") panic(err) } log.Println("Deleted user.") } triggerList := make([]actions.TriggerInfo, len(resources.triggers)) for i := 0; i < len(resources.triggers); i++ { triggerList[i] = actions.TriggerInfo{Trigger: resources.triggers[i], HandlerArn: nil} } err := resources.cognitoActor.UpdateTriggers(resources.userPoolId, triggerList...) if err != nil { log.Println("Couldn't update Cognito triggers during cleanup.") panic(err) } log.Println("Removed Cognito triggers from user pool.") } else { log.Println("Be sure to remove resources when you're done with them to avoid unexpected charges!") } }
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如需詳API細資訊,請參閱「AWS SDK for Go API參考」中的下列主題。
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使用 Lambda 函數自動確認已知使用者
使用需要的使用者集區註冊使用者 MFA